JP6929630B2 - washing machine - Google Patents

Description

The present invention relates to a washing machine for washing a container such as a wagon for storing an object to be stored such as meat, fish and vegetables.

For example, in a meat processing plant, meat is stored and transported in a metal wagon. After removing the meat from the wagon, a part of the meat, fat, blood, etc. are attached to the wagon as deposits. For this reason, the wagon needs to be cleaned and removed after use.

Patent Document 1 discloses a wagon washing machine for washing this type of wagon. The wagon washing machine can wash the entire inside and outside of the wagon without scattering the deposits on the wagon to the surroundings. This wagon washing machine is swiveled by a washing chamber having an automatic opening / closing door, an elevating device for raising / lowering the wagon between the automatic opening / closing door and the loading / unloading part, and a swivel driving means for swiveling the wagon in the washing chamber. It has a cleaning nozzle that injects cleaning liquid onto the wagon.

Japanese Unexamined Patent Publication No. 2016-19948

By the way, as described above, a part of meat, fat, blood, etc. remains as deposits on the wagon, and when cleaning the wagon, the cleaning liquid is devised and used to efficiently use the wagon. It is desired to be able to wash hygienically.

The present invention has been made in view of the above, and an object of the present invention is to efficiently and hygienicly use a treatment liquid by devising a treatment liquid when removing deposits remaining in a container such as a wagon. The purpose is to provide a washing machine that can wash.

In order to achieve the above object, the washing machine of the first aspect is a washing machine for washing the container in the processing chamber, for accommodating the container in the processing chamber and taking out the washed container from the processing chamber. A loading / unloading unit, a pre-cleaning nozzle that pre-cleans the container in the processing chamber with a pre-cleaning liquid, and a cleaning nozzle that cleans the container after the pre-cleaning in the processing chamber with a cleaning liquid. The rinse nozzle for rinsing with the rinsing liquid and the used pre-cleaning liquid discharged from the processing chamber are drained from the cleaned container in the processing chamber, and the used cleaning liquid discharged from the treatment chamber is drained. The circulating wastewater treatment unit is provided with a circulating wastewater treatment unit that circulates the container and drains the rinse liquid after use that comes out of the treatment chamber. After a lapse of time, the drainage of the preliminary cleaning liquid is switched to the circulation of the cleaning liquid.

In the washing machine of the first aspect , the circulating wastewater treatment unit drains the used preliminary cleaning liquid from the treatment room, circulates the used cleaning liquid from the treatment room, and discharges the used rinse liquid from the treatment room. Drain. After a predetermined time has elapsed from the start of cleaning the container with the cleaning liquid, the drainage of the preliminary cleaning liquid is switched to the circulation of the cleaning liquid. That is, for example, the drainage operation of the preliminary cleaning liquid containing a part of meat and deposits of fat and blood is continued by delaying the time for a predetermined time after the start of cleaning the container. This predetermined time is the time from the start of cleaning to the time when the pre-cleaning solution and the cleaning solution are preferably mixed during the cleaning, and the pre-cleaning solution disappears in the mixed pre-cleaning solution and the cleaning solution, for example, the color of blood disappears. Is. As a result, by switching to the circulating state of the cleaning liquid, for example, it is possible to prevent the preliminary cleaning liquid containing a part of meat and deposits of fat and blood from entering the cleaning liquid. In this way, when cleaning and removing the deposits from the container, the cleaning liquid for cleaning can be devised and used for efficient and hygienic cleaning.

In the washing machine of the second aspect , assuming that the predetermined time is the first predetermined time, the circulating wastewater treatment unit waits for a predetermined second predetermined time to elapse after the start of rinsing the container with the rinsing liquid. It is characterized in that the circulation of the cleaning liquid is switched to the drainage of the rinsing liquid.

In the washing machine of the second aspect , the circulating wastewater treatment unit switches from the circulation of the washing liquid to the drainage of the rinsing liquid after a lapse of a predetermined second predetermined time after the start of rinsing the container with the rinsing liquid. The second predetermined time is, for example, the time until the supply of the cleaning liquid is stopped and the cleaning liquid that has already been used and discharged from the treatment chamber is switched to the rinsing liquid. Therefore, when the cleaning liquid is switched to the rinsing liquid, the cleaning liquid can be prevented from being drained to the outside, and only the rinsing liquid used for rinsing the container can be drained. As a result, the cleaning liquid can be prevented from being drained to the outside, and the rinsing liquid can be prevented from being mixed with the cleaning liquid, so that the concentration of the detergent in the cleaning liquid can be prevented from being diluted by the rinsing liquid.

In the cleaning machine of the third aspect, the container is set so that the opening side of the container faces downward in the processing chamber, and the pre-cleaning nozzle is arranged toward the inner surface side of the container. The cleaning nozzles are arranged toward both the outer surface side and the inner surface side of the container, and the rinsing nozzles are arranged toward both the outer surface side and the inner surface side of the container, respectively, and the cleaning nozzles are arranged. A first drive that rotates the cleaning nozzle and the rinsing nozzle when the nozzle injects the cleaning liquid onto the outer surface side of the container and when the rinsing nozzle injects the rinsing liquid onto the outer surface side of the container. The pre-cleaning nozzle and the cleaning nozzle when the pre-cleaning nozzle sprays the pre-cleaning liquid onto the inner surface side of the container and when the cleaning nozzle sprays the cleaning liquid onto the inner surface side of the container. It is characterized by having a second drive unit for rotating the nozzle.

In the washing machine of the third aspect , the first drive unit is used for rinsing with the washing nozzle when the washing nozzle sprays the cleaning liquid on the outer surface side of the container and when the rinsing nozzle sprays the rinsing liquid on the outer surface side of the container. By rotating the nozzle, the outer surface side of the container can be cleaned and rinsed to every corner. Further, the second drive unit rotates the pre-cleaning nozzle and the cleaning nozzle when the pre-cleaning nozzle sprays the pre-cleaning liquid on the inner surface side of the container and when the cleaning nozzle sprays the cleaning liquid on the inner surface side of the container. , The inner surface side of the container can be pre-cleaned and cleaned to every corner.

In the washing machine of the fourth aspect , the position of the cleaning nozzle that injects the cleaning liquid onto the outer surface side of the container and the position of the rinsing nozzle that injects the rinsing liquid onto the outer surface side of the container are displaced from each other. It is characterized by being.

In the washing machine of the fourth aspect , the injection of the cleaning liquid from the cleaning nozzle to the outer surface of the container does not get in the way due to the presence of the rinsing nozzle, and the injection of the rinsing liquid from the rinsing nozzle to the outer surface of the container is the cleaning nozzle. It does not get in the way due to the existence of. Therefore, the outer surface of the container can be reliably cleaned and rinsed.

In the cleaning machine of the fifth aspect, the circulating wastewater treatment unit has a circulating wastewater switching member arranged in a cleaning liquid tank accommodating the cleaning liquid and a deposit filtering unit, and the circulating wastewater switching member is In the drainage of the preliminary cleaning liquid, the preliminary cleaning liquid is drained to the deposit filtration unit, in the circulation of the cleaning liquid, the cleaning liquid is circulated in the cleaning liquid tank, and in the drainage of the rinse liquid, the rinse liquid is drained. It is characterized by.

In the washing machine of the fifth aspect , the circulation drainage switching member can drain the drainage of the preliminary cleaning liquid containing the deposits removed from the container to the deposit filtration unit. Therefore, the deposit filter unit can remove the deposits removed from the container from the preliminary cleaning liquid.

In the washing machine of the sixth aspect, the rinsed container is cooled by cooling water in the processing chamber, and the cooled container is drained by blowing compressed air. It is a feature.

In the washing machine of the sixth aspect , for example, a container that has been pre-washed, main-washed, and rinsed with warm water can be cooled by cooling water, and the container is kept at a low temperature to prevent the container from remaining high. The hygiene aspect is improved. After that, the cooled container is drained by compressed air, so that the container can be easily dried and the hygiene of the container is improved.

According to the present invention, it is possible to provide a cleaning machine capable of efficiently and hygienically cleaning by devising and using a treatment liquid when removing deposits remaining in a container such as a wagon.

It is a front view which shows the preferable embodiment of the washing machine of this invention. It is a side view of the washing machine shown in FIG. It is a top view of the washing machine shown in FIG. An example of the configuration of the entire system of the washing machine is shown, the processing chamber of the main body of the washing machine and the peripheral elements including the washing tank are shown in detail, and the peripheral elements including the preliminary washing tank and the peripheral elements including the rinsing tank are simplified. It is a figure which shows. It is a figure which shows in detail the peripheral element including the pre-cleaning tank shown in FIG. 4, and the peripheral element including a rinse tank. It is a block diagram which shows the control part and the electric connection example of each element. It is a flow figure which shows the series operation example of the washing machine of embodiment of this invention. It is a flow chart which shows the preliminary cleaning process SP1 shown in FIG. 7. It is a flow chart which shows the cleaning process SP2 shown in FIG. 7. It is a flow chart which shows the rinsing process SP3 shown in FIG. 7. It is a flow chart which shows the cooling process SP4 shown in FIG. 7. It is a flow chart which shows the draining process S5 shown in FIG. 7. It is a figure which shows another embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a front view showing a preferred embodiment of the washing machine of the present invention. FIG. 2 is a side view of the washing machine shown in FIG. FIG. 3 is a plan view of the washing machine shown in FIG.

(Outline of the overall configuration of the washing machine 1)
The washing machine 1 shown in FIGS. 1 to 3 is a device for washing the container C. This container C is, for example, a metal wagon for accommodating and transporting meat in a meat processing plant, and is called a meat wagon. The capacity of the container C is, for example, about 200 liters to 500 liters, and the washing machine 1 can wash the container C having any capacity.

The container C has a box-shaped container body B made of a metal having excellent heat resistance, heat dissipation, and hygiene such as stainless steel, and a plurality of wheels D provided at the bottom of the container body B. ing. The container C can be manually pushed and transported by an operator, or can be automatically transported by using a machine.

When a worker houses and transports meat in this container C, for example, at a meat processing plant and takes out the meat from the container C, a part of the meat, fat and blood are deposited on the inner surface of the container C. And adheres to the outer surface. This washing machine 1 cleans the inner and outer surfaces of the container C at the same time so as not to scatter a part of meat and deposits such as fat and blood from the container C to the surroundings. It can be removed, and preferably the container C can be cooled to perform a draining treatment.

The washing machine 1 shown in FIGS. 1 to 3 has a main body 2, a loading / unloading unit 3 for a container C provided on the front side of the main body 2, and a control unit 100. The main body 2 and the loading / unloading section 3 of the container C are made of a metal such as stainless steel. As shown in FIG. 1, the control unit 100 is attached to the side surface of the main body 2.

The main body 2 uses a pre-cleaning solution of warm water to remove a part of meat, fat, and blood adhering to the container C, which is charged by the loading / unloading unit 3 of the container C. After the pre-cleaning, the container C is main-washed with a washing solution of warm water and a detergent, and rinsed with a rinsing solution.

The loading / unloading section 3 of the container C reverses the container C positioned at the loading / unloading position P shown in FIGS. 2 and 3 by 180 degrees and throws it into the cleaning position R to position the container C. After pre-cleaning, main cleaning, rinsing, and if necessary, cooling and draining, the cleaned container C in the main body 2 is returned from the cleaning position R of the main body 2 to the loading / unloading position P. It has become.

(Main body 2)
First, a preferable structural example of the main body 2 will be described with reference to FIGS. 1 to 3.

As shown in FIGS. 1 and 2, the main body 2 has a pedestal 4 and a rectangular parallelepiped processing chamber 5. The gantry 4 is installed so as not to move with respect to the floor surface F, and the processing chamber 5 is fixed on the gantry 4. The inside of the processing chamber 5 has, for example, a rectangular parallelepiped working space WP for accommodating the container C and performing preliminary cleaning, main cleaning, rinsing, and cooling and draining treatment as necessary.

As shown in FIGS. 1 and 2, the processing chamber 5 is formed by an upper surface plate 6, side plates 7 and 8, a front plate 9 and a back plate 10. The top plate 6, the side plates 7, 8 and the front plate 9 and the back plate 10 form a work space WP which is an enclosed space. Preliminary cleaning liquid of hot water, cleaning liquid and detergent, rinsing liquid, compressed air, steam, etc. are prevented from leaking from the inside of this work space WP to the outside. The size of this work space WP is sufficiently large compared to the size of the container C. As shown in FIG. 1, the control unit 100 is fixed to the side plate 8 side.

As shown in FIGS. 1 and 3, the front plate 9 of the processing chamber 5 is provided with left and right opening / closing doors 11 and 12. The opening / closing doors 11 and 12 are rotatably supported by the hinges 11H and 12H shown in FIG. 1 in order to open and close the rectangular opening 15 provided in the front plate 9. The opening 15 is provided between the loading / unloading section 3 of the container C and the cleaning position R.

As shown in FIG. 2, the bases of the door opening / closing cylinders 13 and 14 are attached to the attachment portion 6A of the top plate 6, and the telescopic rods of the door opening / closing cylinders 13 and 14 are attached to the opening / closing doors 11 and 12. There is. As the door opening / closing cylinders 13 and 14, for example, a fluid pressure cylinder such as an air cylinder can be used.

As a result, when the container C is loaded into the work space WP from the loading / unloading position P or the container C is taken out from the working space WP to the loading / unloading position P, the telescopic rods of the door opening / closing cylinders 13 and 14 are extended. As a result, the opening / closing doors 11 and 12 can be opened by rotating each of the opening / closing doors 11 and 12 by about 90 degrees to open the opening 15.

Further, when performing work such as pre-cleaning or cleaning or rinsing the container C in the work space WP, the telescopic rods of the door opening / closing cylinders 13 and 14 contract to cause the opening / closing doors 11 and 12 to be approximately 90 degrees. On the contrary, the opening / closing doors 11 and 12 can close the opening 15 so that the preliminary cleaning liquid of hot water, the cleaning liquid and the detergent, the rinsing liquid, the compressed air, the steam, and the like do not leak to the outside.

As shown in FIGS. 1 and 2, the first cleaning nozzle 20 and the first rinsing nozzle 21 are arranged inside the processing chamber 5, that is, in the work space WP. On the inner surface of the upper surface plate 6 of the processing chamber 5, the connecting member 22 is fixed so as not to rotate with respect to the processing chamber 5. The first rinsing nozzle 21 is coaxially and rotatably held with respect to the connecting member 22. The first cleaning nozzle 20 and the first rinsing nozzle 21 are coaxial with each other, and the first cleaning nozzle 20 and the first rinsing nozzle 21 are fixed to each other by welding or the like. Therefore, the first rinsing nozzle 21 and the first cleaning nozzle 20 are coaxially rotatable with respect to the connecting member 22.

Preferably, the first rinsing nozzle 21 is arranged closer to the top plate 6, and the first cleaning nozzle 20 is arranged below the first rinsing nozzle 21. As described above, since the first cleaning nozzle 20 and the first rinsing nozzle 21 are fixed by welding or the like, the first cleaning nozzle 20 and the first rinsing nozzle 21 are integrally centered on the connecting member 22. It is designed to rotate. In FIGS. 1 and 2, a part of the first rinse nozzle 21 is not shown.

As shown in FIGS. 2 and 3, an upper nozzle rotation motor 30 as a first drive unit is arranged on the upper surface plate 6. As shown in FIG. 3, the timing pulley of the output shaft 30R of the upper nozzle rotation motor 30 is connected to the timing pulley of the power transmission shaft 31 by a timing belt (toothed belt) 31R. The power transmission shaft 31R is continuously and integrally provided from the first cleaning nozzle 20, and the power transmission shaft 31R is integrated with the first cleaning nozzle 20 and is rotatable with respect to the connecting member 22. Is.

As a result, the rotational driving force of the upper nozzle rotation motor 30 is transmitted to the first cleaning nozzle 20 via the timing belt 31R and the power transmission shaft 31, so that the first cleaning nozzle 20 and the first rinsing nozzle 21 can be moved. It can be integrally rotated continuously, for example, in the counterclockwise direction when viewed from above.

As shown in FIG. 2, the upper surface plate 6 of the processing chamber 5 is provided with an exhaust port 32 leading to the work space WP of the processing chamber 5. From the exhaust port 32, compressed air, steam, etc. injected into the work space SP can be discharged to the outside. Preferred structural examples of the first cleaning nozzle 20 and the first rinsing nozzle 21 will be described later.

As shown in FIG. 2, a second cleaning nozzle 41, a preliminary cleaning nozzle 42, and a second rinsing nozzle 43 are arranged at the position of the bottom of the work space WP of the processing chamber 5. The connecting member 45 is fixed to the processing chamber 5 so as not to rotate. The second cleaning nozzle 41 is held coaxially and rotatably with respect to the connecting member 45. The second cleaning nozzle 41 and the pre-cleaning nozzle 42 are coaxial with each other, and the second cleaning nozzle 41 and the pre-cleaning nozzle 42 are fixed to each other by welding or the like. Therefore, the second cleaning nozzle 41 and the pre-cleaning nozzle 42 are coaxially rotatable with respect to the connecting member 45.

The timing pulley 46 shown in FIG. 2 is connected to the timing pulley 47 of the output shaft of the lower nozzle rotary motor 44 as the second drive unit by a timing belt. The timing pulley 46 is attached to a power transmission shaft integrally provided so as to be continuously extended downward from the pre-cleaning nozzle 42.

As a result, the driving force of the lower nozzle rotary motor 44 is transmitted to the preliminary cleaning nozzle 42 integrated with the power transmission shaft via the timing pulley 47, the timing belt and the timing pulley 46 of the power transmission shaft, so that the second cleaning The nozzle 41 and the pre-cleaning nozzle 42 are integrally and continuously rotate.

As described above, the first cleaning nozzle 20 and the first rinsing nozzle 21 described above can be continuously rotated, and the second cleaning nozzle 41 and the pre-cleaning nozzle 42 can also be continuously rotated. However, the second rinse nozzle 43 remains fixed and does not rotate. The first cleaning nozzle 20 and the first rinsing nozzle 21 are arranged in the work space WP of the processing chamber 5 above the container M located at the cleaning position R. On the other hand, the second cleaning nozzle 41 and the preliminary cleaning nozzle 42 are located in the work space WP of the processing chamber 5 and inside the container M at the cleaning position R. Further, the second rinse nozzle 43 is arranged in the work space WP of the processing chamber 5 at a position below the container M at the cleaning position R.

The first cleaning nozzle 20 and the first rinsing nozzle 21 continuously rotate the outside of the container C put into the work space WP so as not to hit the outer surface of the container C. The second cleaning nozzle 41 and the preliminary cleaning nozzle 42 rotate continuously so as not to hit the inner surface of the container C.

The second cleaning nozzle 41 can inject the cleaning liquid to the inner surface side of the container C, and the pre-cleaning nozzle 42 can inject the preliminary cleaning liquid to the inner surface side of the container C. Then, the second rinsing nozzle 43 can inject the rinsing liquid upward onto the inner surface of the container C.

As shown in FIG. 2, a rinsing pump 50 is arranged on the gantry 4 of the main body 2. A drainage damper 51 for cleaning liquid and a drainage switching cylinder 52 are arranged on the gantry 4. As shown in FIG. 3, the gantry 4 has a cleaning tank 54, a cleaning pump 55, a preliminary cleaning pump 56, a preliminary cleaning tank 57, a rinsing tank 58, and a reversing drive motor 59. The pre-cleaning tank 57 has a drainage connection port 57D, and the rinsing tank 58 has a drainage connection port 58D. The cleaning tank 54, the cleaning pump 55, and the preliminary cleaning pump 56 are arranged on the back plate 10 side, and the preliminary cleaning tank 57, the rinsing tank 58, and the reversing drive motor 59 are arranged on the side plate 8 side.

(Intake / take-out unit 3 of container C)
Next, a preferable structural example of the loading / unloading section 3 of the container C will be described with reference to FIGS. 2 and 3.

As shown in FIGS. 2 and 3, the loading / unloading portion 3 of the container C is provided on the front plate 9 side of the main body portion 2. The loading / unloading section 3 of the container C includes a reversing drive motor 59, a holding member 70 for holding the container C, and a reversing central shaft 71. The holding member 70 has a pair of left and right arms 72, 72 as shown in FIG.

As shown in FIG. 3, the arms 72 and 72 are spaced apart from each other and parallel to each other, and the arms 72 and 72 are substantially U-shaped as shown in FIG. It has two parts 72B. The first portion 72A and the second portion 72B are spaced apart and parallel so that they can be located on the upper side and the lower side of the container C.

As shown in FIGS. 2 and 3, each base portion 73 of the first portion 72A and the second portion 72B is fixed to the reversing central axis 71. As shown in FIG. 3, the reversing central shaft 71 is connected to the output shaft of the reversing drive motor 59 via the speed reducer 59B. When cleaning the container C, the reversing drive motor 59 operates, and as shown in FIG. 2, when the container C is charged, the holding member 70 holds the container C and shows a broken line. The position can be changed from the loading / unloading position P shown by the trajectory line J to the cleaning position R in the work space WP shown by the solid line by rotating forward and reversing 180 degrees.

On the contrary, when the cleaned container C is taken out, the reversing drive motor 59 operates, so that the holding member 70 is cleaned in the work space WP while holding the container C, as shown in FIG. The position can be returned to the loading / unloading position P by reversing 180 degrees from the position R along the locus line J.

The first portions 72A and 72A of the left and right arms 72 and 72 shown in FIG. 2 have support members 72C for supporting the side surface of the container C, respectively. The container support member 72C supports the left and right side surface portions of the container C when the arms 72 and 72 hold the container C. As a result, when the holding member 70 holds the container C and reverses or reverses, the container C can be prevented from shifting in the X direction (horizontal direction) in FIG. The X direction indicates the left-right direction of the washing machine 1, the Y direction indicates the depth direction of the washing machine 1, and the Z direction indicates the vertical direction of the washing machine 1.

(Example of configuration of the entire system of the washing machine 1)
Next, a configuration example of the entire system of the washing machine 1 will be described in more detail with reference to FIGS. 4 and 5.

FIG. 4 is a diagram showing a configuration example of the entire system of the washing machine 1, but in FIG. 4, the processing chamber 5 of the main body 2 of the washing machine 1 and the peripheral elements including the washing tank 54 are shown in detail, and pre-cleaning is performed. The peripheral elements including the tank 57 and the peripheral elements including the rinse tank 58 are shown in a simplified manner. FIG. 5 shows in detail the peripheral element including the pre-cleaning tank 57 and the peripheral element including the rinsing tank 58 shown in FIG.

In the processing chamber 5 of the main body 2 shown in FIG. 4, the door opening / closing cylinders 13 and 14 and the upper nozzle rotation motor 30 are arranged on the upper surface plate 6. The top plate 6 is provided with an exhaust port 32. A drainage port 5L is provided at the lower part of the treatment chamber 5.

First, a preferable structural example of the first cleaning nozzle 20 and the first rinsing nozzle 21 will be described with reference to FIG.

In the work space WP of the processing chamber 5 shown in FIG. 4, the first cleaning nozzle 20 and the first rinsing nozzle 21 as the upper nozzles are rotatably attached by the connecting member 22 at the lower position of the upper surface plate 6. ing. Preferably, the first rinsing nozzle 21 is arranged closer to the top plate 6, and the first cleaning nozzle 20 is arranged below the first rinsing nozzle 21. The first cleaning nozzle 20 and the first rinsing nozzle 21 are located above the holding member 70 holding the container C at the cleaning position R in the work space WP. As described above, the rotational driving force of the upper nozzle rotation motor 30 is transmitted via the power transmission shaft 31 and the connecting member 22, so that the first cleaning nozzle 20 and the first rinsing nozzle 21 can be moved from above, for example. It can rotate continuously in the counterclockwise direction.

As shown in FIG. 4, the first cleaning nozzle 20 and the first rinsing nozzle 21 preferably have the same substantially inverted U shape. The first cleaning nozzle 20 has a pair of vertical portions 20A and 20A and a horizontal portion 20B connecting the pair of vertical portions 20A and 20A. A plurality of injection nozzles 20N are provided at intervals in the pair of vertical portions 20A and 20A and the horizontal portion 20B. The injection nozzles 20N of the pair of vertical portions 20A and 20A inject the cleaning liquid onto the outer surface side (four side surface sides) of the container C in the horizontal direction. The injection nozzle 20N of the horizontal portion 20B injects the cleaning liquid downward toward the outer surface side (bottom surface side) of the container C.

The distance between the pair of vertical portions 20A and 20A is set wide so that the pair of left and right arms 72 and 72 of the holding member 70 holding the container C do not hit the pair of vertical portions 20A and 20A. When cleaning the container C, the pair of vertical portions 20A and 20A orbit around the holding member 70 holding the container C at the cleaning position R.

On the other hand, as shown in FIG. 4, the first rinsing nozzle 21 has a pair of vertical portions 21A and 21A and a horizontal portion 21B connecting the pair of vertical portions 21A and 21A. A plurality of injection nozzles 21N are provided at intervals in the pair of vertical portions 21A and 21A and the horizontal portion 21B, respectively. The injection nozzles 21N of the pair of vertical portions 21A and 21A inject the rinse liquid toward the outer surface side (four side surface sides) of the container C in the horizontal direction. The injection nozzle 21N of the horizontal portion 21B injects the rinsing liquid downward toward the outer surface side (bottom surface side) of the container C. The distance between the pair of vertical portions 21A and 21A is set wide so that the pair of left and right arms 72 and 72 of the holding member 70 holding the container C do not hit the pair of vertical portions 21A and 21A. The pair of vertical portions 21A, 21A orbit around the holding member 70 holding the container C at the cleaning position R.

As shown in FIG. 4, the position of the first cleaning nozzle 20 and the position of the first rinsing nozzle 21 are attached to the connecting member 22 at a predetermined angle θ. It is also shown in the plan view of FIG. 3 that the position of the first cleaning nozzle 20 and the position of the first rinsing nozzle 21 are shifted by a predetermined angle θ in the rotation direction. Moreover, as shown in FIG. 1, the first rinsing nozzle 21 is arranged at a higher position than the first cleaning nozzle 20.

As a result, the injection of the cleaning liquid from the injection nozzle 20N of the first cleaning nozzle 20 shown in FIG. 4 to the container M can be prevented from being physically interfered by the presence of the first rinsing nozzle 21, and the first rinsing nozzle 21 can be prevented from being physically interfered with. The injection of the rinsing liquid from the injection nozzle 21N to the container M can be prevented from being physically interfered by the presence of the first cleaning nozzle 20.

This angle θ can be set in the range of, for example, 10 degrees to 30 degrees, but is not limited to this. If the angle θ is smaller than, for example, 10 degrees, the injections of the cleaning liquid and the rinsing liquid tend to physically interfere with each other, which is not preferable.

Further, for example, when the angle θ is larger than 30 degrees, the pair of left and right arms 72, 72 of the holding member 70 holding the container C move from the loading / unloading position P to the cleaning position R in the work space WP, or vice versa. The pair of left and right arms 72, 72 of the holding member 70 holding the container C obstructs the work of returning the position from the cleaning position R in the work space WP to the loading / unloading position P, and the holding member 70 holding the container C. It is not preferable because it may interfere with the loading and unloading work.

By rotating the cleaning nozzle 20 and the rinsing nozzle 21, the upper nozzle rotation motor 30 can cleanly and rinse the outer surface side of the container C to every corner.

Next, the second cleaning nozzle 41, the pre-cleaning nozzle 42, and the second rinsing nozzle 43 as the lower nozzle on the lower side will be described with reference to FIG.

A second cleaning nozzle 41, a preliminary cleaning nozzle 42, and a second rinsing nozzle 43 are arranged at the bottom of the work space WP of the processing chamber 5 shown in FIG. The second cleaning nozzle 41 and the preliminary cleaning nozzle 42 continuously rotate by driving the lower nozzle rotation motor 44. The second cleaning nozzle 41 has a plurality of injection nozzles 41N, the preliminary cleaning nozzle 42 has a plurality of injection nozzles 42N, and the second rinsing nozzle 43 has a plurality of injection nozzles 43N.

The first cleaning nozzle 20 and the first rinsing nozzle 21 described above can be continuously rotated, and the second cleaning nozzle 41 and the pre-cleaning nozzle 42 can also be continuously rotated. However, the second rinse nozzle 43 does not rotate.

The second cleaning nozzle 41 ejects the cleaning liquid while rotating with respect to the inner surface of the container C at the cleaning position R. The pre-cleaning nozzle 42 injects the pre-cleaning liquid while rotating with respect to the inner surface of the container C at the cleaning position R. The second rinsing nozzle 43 sprays the rinsing liquid onto the inner surface of the container C at the cleaning position R. Since the lower nozzle rotation motor 44 rotates the pre-cleaning nozzle 42 and the cleaning nozzle 41, the pre-cleaning process and the cleaning process can be performed on the inner surface side of the container C to every corner.

(Washing tank 54)
Next, the cleaning tank 54 will be described in detail with reference to FIG.

The cleaning tank 54 is a box-shaped storage tank for accommodating the cleaning liquid 301 and circulating the cleaning liquid 301 with respect to the container C. The cleaning tank 54 has a drainage connection port 54A, a partition wall 54B, a dust basket 54C as a deposit filtering unit, a steam silencer 54D, and a wastewater treatment unit 99. The partition wall 54B divides the inside of the cleaning tank 54 into two regions 54M and 54N. The area 54M is a portion for storing the cleaning liquid 301, and does not contain the preliminary cleaning liquid or the rinsing liquid. The region 54N constitutes a part of the wastewater treatment unit 99, and contains a preliminary cleaning liquid and a rinsing liquid.

The wastewater treatment unit 99 shown in FIG. 4 is composed of a wastewater damper 51 for cleaning liquid as a circulating wastewater switching member, a dust basket 54C, and a region 54N. The garbage basket 54C is detachably arranged in the area 54N. In the preliminary cleaning liquid drainage mode, the garbage basket 54C filters, for example, a part of meat, fat and blood deposits contained in the preliminary cleaning liquid from the preliminary cleaning liquid, and discharges only the preliminary cleaning liquid 302 to the outside. .. A part of the meat collected in the garbage basket 54C and the deposits of fat and blood (drip blood) can be easily discarded by removing the garbage basket 54C.

As shown in FIG. 4, the drainage port 5L at the lower part of the treatment chamber 5 is provided at an upper position on the region 54M side of the cleaning tank 54. The drainage damper 51 for the cleaning liquid is arranged on the region 54M side. The drainage damper 51 is connected to the rod of the drainage switching cylinder 52 via a connecting member 52D. By expanding and contracting the rod of the drainage switching cylinder 52, the drainage damper 51 can swing in the V direction.

As a result, when the tip portion 51S of the drainage damper 51 is lowered to the region 54N side as shown by the solid line, the dirty preliminary cleaning liquid and the rinsing liquid discharged from the drainage port 5L at the lower part of the treatment chamber 5 are removed. It can be directly guided into the garbage basket 54C. For example, when pre-cleaning the container C with a pre-cleaning solution, the garbage basket 54C filters a part of meat and deposits of fat and blood (drip blood) from the dirty pre-cleaning solution, and the pre-cleaning solution. Only can be drained to the outside.

Further, in the cleaning liquid circulation mode in which the cleaning liquid 301 is circulated to the container C via the cleaning tank 54, when the container C is cleaned using the cleaning liquid 301, a part of meat and fat content are already present from the container C. And blood deposits have been roughly removed. Therefore, the rear end portion 51T of the drainage damper 51 is in a state of being lowered to the region 54M side as shown by the broken line, and the cleaning liquid 301 discharged from the drainage port 5L of the treatment chamber 5 is inside the region 54M side of the cleaning tank 54. Can be collected in.

As shown in FIG. 4, the steam silencer 54D arranged in the cleaning tank 54 is connected to the steam supply unit 200 via the solenoid valve 54W and the pipe 150. The opening degree of the solenoid valve 54W is adjusted by the temperature of the cleaning liquid 301 in the cleaning tank 54 detected by the temperature controller 54S, which is also a temperature sensor, and the amount of steam supplied can be adjusted. Therefore, the control unit 100 keeps the temperature of the washing water 301 in the washing tank 54 at a predetermined temperature.

If necessary, the steam supply unit 200 can inject steam toward the container C from a pipe and a steam injection nozzle (not shown). In this way, steam is injected from one steam injection nozzle in the work space SP, but steam can be sufficiently filled in the work space SP even by injecting steam from one steam injection nozzle. can.

As shown in FIG. 4, the cleaning tank 54 is connected to the cleaning pump 55 via a strainer 54K and a pipe 151. The pipe 152 protruding from the cleaning pump 55 is connected to the first cleaning nozzle 20 via a pipe 153 coaxially passing through the power transmission shaft 31. As a result, by driving the cleaning pump 55, the cleaning liquid 01 in the cleaning tank 54 is transferred from each injection nozzle 20N of the first cleaning nozzle 20 to the outer surface of the container C via the pipes 151 and 152 and the pipe 153. The outer surface of the container C can be cleaned by injecting it.

Further, as shown in FIG. 4, another pipe 154 is connected in the middle of the pipe 152, and this pipe 154 is connected to the second cleaning nozzle 41. As a result, the cleaning liquid in the cleaning tank 54 is injected from each injection nozzle 41N of the second cleaning nozzle 41 to the inner surface of the container C via the pipes 151 and 152 and the pipe 154 to blow the inner surface of the container C. It can be washed with the cleaning liquid 301.

Another pipe 172 is connected to the cleaning tank 54. The pipe 172 is connected to the detergent tank 170 via a pump 171. When the pump 171 operates, the detergent 301 can be added from the detergent tank 170 into the cleaning tank 54, if necessary. As the detergent, a strong alkaline detergent is preferably used in order to ensure that the deposits adhering to the container M can be removed.

(Preliminary cleaning tank 57)
Next, the preliminary cleaning tank 57 will be described with reference to FIGS. 4 and 5.

The pre-cleaning tank 57 shown in FIGS. 4 and 5 is a box-shaped storage tank for storing the pre-cleaning liquid 302. As shown in FIG. 5, the pre-cleaning tank 57 has a drainage connection port 57D and a temperature controller 57S. The drainage connection port 57D is connected to a drainage portion 57L for holding the liquid level of the preliminary cleaning liquid contained in the cleaning tank 57. As a result, when the liquid level of the preliminary cleaning liquid 302 housed in the cleaning tank 57 exceeds the drainage portion 57L for holding the liquid level, the excess amount of the preliminary cleaning liquid 302 connects the drainage portion 57L and the drainage connection port 57D. It can be drained from the pre-cleaning tank 57 through. Therefore, it is possible to prevent the preliminary cleaning liquid from overflowing in the preliminary cleaning tank 57.

As shown in FIG. 4, the steam silencer 57E arranged in the preliminary cleaning tank 57 is connected to the steam supply unit 200 via the solenoid valve 57W and the pipes 158 and 150. The opening degree of the solenoid valve 57W is adjusted by the temperature of the preliminary cleaning liquid 302 in the preliminary cleaning tank 57 detected by the temperature controller 57S, and the amount of steam supplied can be adjusted. Therefore, the control unit 100 keeps the temperature of the preliminary cleaning liquid 302 in the preliminary cleaning tank 57 at a predetermined temperature.

As shown in FIG. 5, the pre-cleaning tank 57 is connected to the pipes 159 and 160 via the pre-cleaning pump 56. The pipes 159 and 160 are connected to the pre-cleaning nozzle 42. As a result, when the pre-cleaning pump 56 operates, the pre-cleaning liquid 302 of the pre-cleaning tank 57 passes through the pipes 159 and 160 from each injection nozzle 42N of the pre-cleaning nozzle 42, for example, in a temperature range in which meat deterioration does not occur. For example, the injection is performed toward the inner surface of the container C at a temperature below a predetermined range and at a medium pressure. As a result, the container C can be pre-cleaned.

As shown in FIG. 4, the pipe 161 is connected to the pipe 160. The pipe 160 is connected to the compressor 163 via a switching valve 181, a filter 162 for air filtration, and a solenoid valve 180. As a result, by operating the compressor 163, compressed air can be injected from each injection nozzle 42N of the pre-cleaning nozzle 42 toward the inner surface of the container C via the pipes 161, 160. Therefore, the injected compressed air can be drained after rinsing the inner surface of the container C.

As shown in FIGS. 4 and 5, the water supply source 210 is connected to the pipes 211, 212, 213. The pipe 211 is connected in the preliminary cleaning tank 57, the pipe 212 is connected in the cleaning tank 54, and the pipe 213 is connected in the rinsing tank 58. A solenoid valve 188 is arranged between the pipe 213 and the pipe 220. As a result, the water from the water supply source 210 can be appropriately supplied to the preliminary cleaning tank 57, the cleaning tank 54, and the rinsing tank 58 via the pipes 211, 212, and 213, respectively.

Further, as shown in FIG. 4, the water of the water supply source 210 is injected from each injection nozzle 21N of the first rinsing nozzle 21 via the pipes 211, 213, the solenoid valve 188, and the pipe 220, whereby the work space WP. It can be supplied as cooling water for cooling the inner container C.

(Rinse tank 58)
Next, the rinsing tank 58 will be described with reference to FIGS. 4 and 5.

The rinsing tank 58 shown in FIGS. 4 and 5 is a box-shaped storage tank for storing the rinsing liquid. The rinsing tank 58 has a drainage connection port 58D and a temperature controller 58S. The drainage connection port 58D is connected to a drainage portion 58L for holding the liquid level of the rinsing liquid contained in the cleaning tank 58. As a result, when the liquid level of the rinse liquid 303 contained in the cleaning tank 58 exceeds the drainage portion 58L for holding the liquid level, the excess amount of the rinse liquid 303 passes through the drainage portion 58L and the drainage connection port 58D. Through, the water can be drained from the rinse tank 58. As a result, it is possible to prevent the rinsing liquid 303 from overflowing in the rinsing tank 58.

As shown in FIG. 5, the steam silencer 58E arranged in the rinse tank 58 is connected to the steam supply unit 200 via the solenoid valve 58W and the pipe 215. The opening degree of the solenoid valve 58W is adjusted by the temperature of the rinsing liquid 303 in the rinsing tank 58 detected by the temperature controller 58S, and the amount of steam supplied can be adjusted. Therefore, the control unit 100 keeps the temperature inside the rinsing tank 58 at a predetermined temperature.

As shown in FIGS. 4 and 5, the rinsing tank 58 is connected to the pipes 220 and 221 via the rinsing pump 50. The pipe 220 is connected to the first rinsing nozzle 21. The pipe 221 is connected to the second rinse nozzle 43. As a result, when the rinsing pump 56 operates, the rinsing liquid in the rinsing tank 58 is injected from each injection nozzle 21N of the first rinsing nozzle 21 toward the outer surface of the container C via the pipes 220 and 221 to rinse. In addition to being able to perform rinsing, each injection nozzle 43N of the second rinsing nozzle 43 can inject toward the inner surface of the container C for rinsing.

FIG. 6 is a diagram showing an example of electrical connection between the control unit 100 and each element.

As shown in FIG. 6, the reversing drive motor 59, the door opening / closing cylinders 13 and 14, the drainage switching cylinder 52, the upper nozzle rotary motor 30, the pre-cleaning rotary motor 44, and the compressor 163 are commanded by the control unit 100. Driven by. The cleaning pump 55, the preliminary cleaning pump 56, the rinsing pump 50, and the pump 171 are driven by a command from the control unit 100. The operations of the solenoid valve 54W, the solenoid valve 57W, the solenoid valve 58W, the solenoid valves 157, 180, 188, and the switching valve 181 are controlled by a command from the control unit 100.

Further, if necessary, the cleaning tank 54, the preliminary cleaning tank 57, and the rinsing tank 58 shown in FIG. 4 are provided with the drought detection float switches 54F, 57F, and 58F shown in FIG. 6, respectively. As a result, the drought detection float switches 54F, 57F, and 58F are used when the cleaning liquid in the cleaning tank 54 is drought, the pre-cleaning liquid in the pre-cleaning tank 57 is drought, or the rinsing liquid in the rinsing tank 58 is drought. Notifies the control unit 100.

Further, the rinse tank 58 of FIG. 4 can be provided with the rinse flow rate confirmation sensor 99S shown in FIG. 6, if necessary, and the rinse flow rate confirmation sensor 99S controls the flow rate of the rinse liquid discharged from the rinse tank 58. Notify 100.

The temperature controller 54S detects the temperature of the cleaning liquid 301 in the cleaning tank 54 shown in FIG. 4, the temperature controller 57S detects the temperature of the preliminary cleaning liquid 302 in the preliminary cleaning tank 57 shown in FIG. 5, and the temperature controller 58S , The temperature of the rinsing liquid 303 in the rinsing tank 58 shown in FIG. 5 is detected. The temperature controllers 54S, 57S, and 58S notify the detected temperature information to the control unit 100.

(Operation example of washing machine 1)
Next, an operation example in which the container C is pre-cleaned, main-cleaned, rinsed, and if necessary, cooling treatment and draining treatment are performed by the above-mentioned washing machine 1, will be described with reference to FIGS. 7 to 12. do. However, the preliminary cleaning step SP1, the cleaning step SP2, and the rinsing step SP3 shown in FIG. 7 are performed as a series of processes for the container M, but at least one of the cooling step SP4 and the draining step SP5 is omitted as necessary. can do.

FIG. 7 is a flow chart showing a series of operation examples in which the container C is pre-washed by the washing machine 1, the main washing and rinsing are performed, and the container C is cooled to drain water. FIG. 8 is a flow chart showing the preliminary cleaning step SP1 shown in FIG. 7. FIG. 9 is a flow chart showing the cleaning step SP2 shown in FIG. 7. FIG. 10 is a flow chart showing the rinsing step SP3 shown in FIG. FIG. 11 is a flow chart showing the cooling step SP4 shown in FIG. 7. FIG. 12 is a flow chart showing the draining step S5 shown in FIG. 7.

First, in step S1 of FIG. 7, the operator turns on the operation power switch of the control unit 100 of FIG. In step S2, the control unit 100 confirms whether or not the holding member 70 for holding the container C is positioned at the loading / unloading position P as the original position shown by the broken line in FIG.

When the holding member 70 is positioned at the loading / unloading position P, in step S3, the control unit 100 confirms whether the left and right opening / closing doors 11 and 12 shown in FIG. 3 open the opening 15. When the opening / closing doors 11 and 12 are open, in step S4, the drainage damper 51 shown in FIG. 4 is in a drainage state as shown by a solid line, that is, the tip portion 51S of the drainage damper 51 is on the region 54N side. Check if it is in the lowered state.

If the drainage damper 51 is in a drainage state as shown by a solid line, in step S5 of FIG. 7, the container C (also referred to as a work) already used by the worker for transporting meat or the like is shown in FIGS. 2 and 4. As shown, it is checked whether or not it is held by the holding member 70 by throwing it into the loading / unloading position P. At the loading / unloading position P, the holding member 70 holds the container C with the container C facing upward, that is, with the opening of the container C facing upward. In step S6, when the operator turns on the start button of the control unit 100 of FIG. 1, in step S7, an alarm buzzer sounds to notify the operator of the start of cleaning.

In step S8 of FIG. 7, the control unit 100 causes the reversing drive motor 59 shown in FIGS. 2 and 4 to rotate and reverse, so that the holding member 70 holds the container C from the loading / unloading position P. The forward rotation is reversed 180 degrees along the locus line J, and the operation toward the cleaning position R side in the work space WP is started. In this case, the control unit 100 slowly causes the reversing drive motor 59 to rotate in the forward and reverse directions at a low speed. However, in step S9, when the holding member 70 holding the container C reaches a predetermined acceleration position, the control unit 100 switches the reversing drive motor 59 at a high speed instead of a low speed to perform a forward / reverse rotation operation. As a result, the time required to put the container C into the cleaning position R can be shortened.

Then, in step S10 of FIG. 7, the holding member 70 holding the container C is rotated forward and reversed, passes through the already opened opening 15 of the processing chamber 5, and is preliminarily in the work space SP. Reach the specified door closing start position. Then, in step S11, when the control unit 100 passes the door closing start position and reaches the deceleration position, the reversing drive motor 59 switches the reversing drive motor 59 from high speed to low speed at the door closing start position. Slowly rotate forward and reverse toward the cleaning position R. In step S12, when the holding member 70 holding the container C reaches the cleaning position R, the control unit 100 stops the forward / reverse operation of the reverse drive motor 59. When the holding member 70 positions the container C at the cleaning position R in the work space SP, the opening of the container C faces downward as shown in FIGS. 4 and 2. That is, the container C is held by the holding member 70 at the cleaning position R in the work space SP in the inverted state.

On the other hand, returning to step S10, the holding member 70 holding the container C passes through the already opened opening 15 of the processing chamber 5 and passes through the predetermined door closing start position in the work space SP. Then, the process proceeds to steps S13 and 14. In steps S13 and 14, the control unit 100 operates the door opening / closing cylinders 13 and 14 shown in FIGS. 3 and 4 to close the opening / closing door 12 on the right side and the opening / closing door 11 on the left side in FIG. 3 to open the opening 15. Close. As a result, the left and right opening / closing doors 11 and 12 close the opening 15 of the processing chamber 5 to prevent the preliminary cleaning liquid, the cleaning liquid, the rinsing liquid, etc., which will be used later, from leaking to the outside, and open the work space SP. Can be blocked.

In step S15 of FIG. 7, the control unit 100 positions the holding member 70 and the container C at the cleaning position R, which are the cleaning start conditions for starting the next preliminary cleaning step SP1, and (2) left and right. Confirm that the opening / closing doors 11 and 12 of the above are closed. When the control unit 100 can confirm this, the control unit 100 moves to the next step, the preliminary cleaning step SP1.

<Preliminary cleaning process SP1>
The preliminary cleaning step SP1 shown in FIG. 7 is shown in detail in FIG.

In step S16 of the preliminary cleaning step SP1 shown in FIG. 8, as shown in FIGS. 2 and 4, the used container C is already positioned in an inverted state at the cleaning position R by the holding member 70. That is, the opening of the container C faces downward. The control unit 100 starts the cleaning operation of the used container C.

In step S17 of FIG. 8, the drainage damper 51 shown in FIG. 4 is in a drainage state (a state of being lowered to the left side) as shown by a solid line, and in step S18, the control unit 100 pre-cleans the container C. Start the process. In step S19, the control unit 100 activates the preliminary cleaning pump 56 shown in FIGS. 4 and 5, and in step S20, the control unit 100 operates the lower nozzle rotation motor 44 to perform preliminary cleaning of the lower nozzle. Rotate the nozzle 42. In this pre-cleaning step SP1, as shown in steps S17 and S21, the drainage damper 51 shown in FIG. 4 is in a drainage state (a state of being lowered to the left side) as shown by a solid line, that is, a pre-cleaning liquid drainage mode. ..

During the pre-cleaning in step S22 shown in FIG. 8, the pre-cleaning nozzle 42 in FIG. 4 is rotated while the pre-cleaning nozzle 42 injects the pre-cleaning liquid 302 in FIG. 5 in the work space WP shown in FIG. Therefore, the inner surface side of the container C is pre-cleaned to every corner with a medium-pressure pre-cleaning liquid 302 at a predetermined temperature or lower.

During this pre-cleaning, when the pre-cleaning liquid 302 of warm water is sprayed onto the inner surface side of the container C in the work space WP, most of the meat and fats adhering to the inner surface of the container C are removed. Blood is removed.

The pre-cleaning liquid 302 in which the container C is pre-cleaned falls from the drain port 5L shown in FIG. 4 to the drain damper 51 in the cleaning tank 54 in the pre-cleaning liquid drain mode, and is guided by the inclined drain damper 51. Then, it flows into the area 54N side of the cleaning tank 54.

As a result, the garbage basket 54C in the region 54N can filter, for example, a part of meat, fat and blood contained in the preliminary cleaning liquid 302 from the preliminary cleaning liquid 302, and drain only the preliminary cleaning liquid 302. A part of the meat, fat and blood collected in the garbage basket 54C can be easily removed by removing the garbage basket 54C.

When the pre-cleaning of the container C is completed, in step S23 of FIG. 8, the control unit 100 stops the pre-cleaning pump 56 shown in FIG. 4, and the pre-cleaning step SP1 is completed in step S24.

Next, when the preliminary cleaning step SP1 is completed, the process proceeds to the cleaning step SP2 shown in FIGS. 7 and 9.

<Washing process SP2>
In step S25 shown in FIG. 9, the control unit 100 starts the next cleaning step (main cleaning step) SP2. In step S26, the control unit 100 activates the cleaning pump 55 shown in FIG. Moreover, the control unit 100 activates the upper nozzle rotation motor 30 to rotate the first cleaning nozzle 20 which is the upper nozzle, and activates the lower nozzle rotation motor 44 to rotate the second cleaning nozzle 41 which is the lower nozzle. Let me. In steps S25, S26, S27, and S28, as in step S29, the drainage damper 51 shown in FIG. 4 is in a drainage state (lowered to the left) as shown by a solid line, as in the case of step S21 in FIG. The state), the pre-cleaning liquid drainage mode is maintained.

In step S30 of FIG. 9, the first cleaning nozzle 20, which is the upper nozzle, injects a cleaning liquid 301 having a temperature equal to or higher than a predetermined temperature onto the outer surface of the container C while rotating to perform main cleaning, and is a lower nozzle. While the second cleaning nozzle 41 rotates, the cleaning liquid 301 having a temperature equal to or higher than a predetermined temperature is sprayed onto the inner surface side of the container C to perform main cleaning of the inner surface of the container C.

As described above, when the container C is mainly cleaned with the cleaning liquid 301 in step S30, as shown in step S34, after the main cleaning in step S30 is started, a predetermined first predetermined time T1 is set. After that, the drainage damper 51 switches from the preliminary cleaning liquid drainage mode MP in step S29 shown by the solid line in FIG. 4 to the cleaning liquid circulation mode MS in step S34.

In this pre-cleaning liquid drainage mode MP, as described above, the drainage damper 51 shown in FIG. 4 maintains a drainage state (a state in which it is lowered to the left side) for draining the pre-cleaning liquid as shown by a solid line. To say that you are. On the other hand, the cleaning liquid circulation mode MS is a circulation state in which the drainage damper 51 shown in FIG. 4 returns the cleaning liquid 301 to the cleaning liquid tank 54 for reuse and circulates it (down to the right side) as shown by the broken line. It means that the state of being maintained) is maintained.

In the preliminary cleaning liquid drainage mode MP of FIG. 9, the drainage operation of the preliminary cleaning liquid is timed by a predetermined first predetermined time T1 from the cleaning start time TR to the drainage end time TS for draining the preliminary cleaning liquid 302. Delay to. Then, in step S34, the control unit 100 can drive the drainage switching cylinder 52 shown in FIG. 4 to switch the state of the drainage damper 51 from the state shown by the broken line to the state shown by the solid line.

The drainage operation of the preliminary cleaning liquid 302 containing a part of meat and deposits of fat and blood is continued with a time delay of T1 for the first predetermined time after the cleaning of the container C is started. The first predetermined time T1 means, for example, that the pre-cleaning solution 302 and the cleaning solution 301 are mixed during the cleaning after the start of the cleaning, and the pre-cleaning solution 302 disappears in the mixed pre-cleaning solution 302 and the cleaning solution 301, for example, the color of blood. It is the time until the time when is not displayed.

As described above, the TS at the end of drainage at the first predetermined time T1 is preferably the time when the timing at which the color of blood disappears during washing has passed. In this case, the drainage damper 51 switches to a state in which the rear end portion 51T of the drainage damper 51 is lowered toward the region 54M, that is, a circulation state of the cleaning liquid 301, as shown by a broken line.

When the first predetermined time T1 elapses from the start of cleaning, the preliminary cleaning liquid drainage mode MP is switched to the cleaning liquid circulation mode MS, so that the drainage damper 51 is used for cleaning discharged from the drainage port 5L at the lower part of the treatment chamber 5. The used cleaning liquid 301 can be collected in the area 54M of the cleaning tank 54 in a relatively clean state in which the color of blood does not appear. The recovered cleaning liquid 301 can be circulated through the first cleaning nozzle 20 and the second cleaning nozzle 41, and sprayed again onto the container C for cleaning.

Therefore, by switching to the circulating state of the cleaning liquid 301, for example, the preliminary cleaning liquid 302 containing a part of meat and deposits of fat and blood enters the cleaning liquid 301 in the region 54M of the cleaning tank 54. Can be prevented. For this reason, the cleaning machine 1 cleans and removes the deposits from the container C, but the cleaning liquid at the time of cleaning can be devised and used for efficient and hygienic cleaning.

In this way, the timing for switching the state of the drainage damper 51 in FIG. 4 is from the cleaning start time TR for performing the main cleaning of the container C with the cleaning liquid 301 to the drainage end time TS for draining the preliminary cleaning liquid 302. 1 The time is delayed by T1 for a predetermined time. After flowing the preliminary cleaning liquid 302 containing a part of meat and deposits of fat and blood to the region 54 side of the cleaning tank 54, the cleaning liquid 301 is further moved to the region 54N side of the cleaning tank 54 for the first predetermined time T1. By flushing the excess, it is possible to prevent the preliminary cleaning liquid 302 containing a part of meat and deposits of fat and blood from entering the area 54M of the cleaning tank 54 by any chance. That is, it is possible to prevent the cleaning liquid 301 in the cleaning tank 54 from being mixed with deposits of meat, fat and blood.

If the blood content and the detergent of the cleaning liquid 301 are mixed, an effervescence phenomenon may occur, but this effervescence phenomenon can also be prevented. If foaming is performed in a state where blood and detergent are mixed, the cleaning power itself may be reduced due to foaming, which affects the operation of the cleaning pump 55, which is not desirable.

When the cleaning in step S30 of FIG. 9 is completed, the control unit 100 stops the cleaning pump 55 shown in FIG. 4 in step S31, and ends the cleaning step in step S32. The control unit 100 stops the lower nozzle rotation motor 44 shown in FIG. 4 to stop the rotation of the cleaning nozzle, which is the lower nozzle.

When the cleaning step SP2 shown in FIG. 9 is completed, the process proceeds to the rinsing step SP3 shown in FIGS. 7 and 10.

<Rinse process SP3>
In step S35 of the rinsing step SP3 of FIG. 10, the control unit 100 starts the rinsing step. In step S37, the rinsing pump 50 is activated. In step S38, the control unit 100 operates the upper nozzle rotation motor 30 of FIG. 4 to rotate the first rinsing nozzle 21, which is the upper nozzle.

At this time, as shown in step S39, the drainage damper 15 shown in FIG. 4 lowers the rear end portion 51T of the drainage damper 51 toward the region 54M side as shown by the broken line, similarly to step S34 shown in FIG. In addition, the cleaning liquid circulation mode MS remains.

In step S44, when the container C is being rinsed with the cleaning liquid 301, as shown in step S39, when a predetermined second predetermined time T2 has elapsed from the start of rinsing, the cleaning liquid circulation mode MS is released. It is designed to switch to the rinse liquid drainage mode MR. The start of drainage of the rinse liquid is delayed in time by a second predetermined time T2 from the TK at the start of rinsing to the TL at the start of drainage of the rinse liquid for draining the rinse cleaning liquid 303. The second predetermined time T2 is, for example, the time until the supply of the cleaning liquid 301 is stopped and the cleaning liquid 301 that has already been used and discharged from the processing chamber 5 is switched to the rinsing liquid 303.

The cleaning liquid circulation mode MS maintains a circulation state (a state in which the drainage damper 51 is lowered to the right side) in which the drainage damper 51 shown in FIG. 4 returns the cleaning liquid to the cleaning liquid tank 54 for reuse and circulates it, as shown by a broken line. It means that you are doing. On the other hand, in the rinse liquid drainage mode MR, the drainage damper 51 shown in FIG. 4 maintains a drainage state (a state in which the drainage liquid is lowered to the left side) for draining the rinse liquid as shown by a solid line. Say that.

Then, in step S43, the control unit 100 drives the drainage switching cylinder 52 of FIG. 4 to switch the state of the drainage damper 51. That is, in step S43, the tip portion 51S of the drainage damper 51 in FIG. 4 is switched to the drainage state of the rinse liquid 303 that has been lowered to the region 54N side as shown by the solid line.

As a result, when the second predetermined time T2 elapses from the start of rinsing, the drainage damper 51 exits from the drainage port 5L at the lower part of the treatment chamber 5 by switching from the cleaning liquid drainage mode MS to the rinse liquid drainage mode MR. The rinse liquid 303 used for the rinse treatment of the container C can be drained. Therefore, the rinsing liquid 303 can be prevented from entering the region 54M side of the cleaning tank 54, and the concentration of the detergent in the detergent liquid 301 in the cleaning tank 54 can be prevented from being diluted by the rinsing liquid.

Therefore, when the cleaning liquid 301 is switched to the rinsing liquid 303, the remaining cleaning liquid 301 can be prevented from being drained to the outside, and only the rinsing liquid 303 used for rinsing the container C can be drained. .. As a result, the cleaning liquid 301 can be prevented from being drained to the outside, and the rinsing liquid 303 used is prevented from entering the cleaning liquid 301 in the area 54M of the cleaning tank 54. It is possible to prevent the concentration from being diluted by the rinsing liquid.

In step S44, the rinsing process of the container C at the cleaning position R is performed, and when the rinsing process is completed, the rinsing pump 50 is stopped in step S41, and the rinsing step SP3 is completed in step S42.

When the rinsing step SP3 shown in FIG. 10 is completed, the process proceeds to the cooling step SP4 shown in FIGS. 7 and 11.

<Cooling process SP4>
As described above, the container C is in a heated state by performing preliminary cleaning, main cleaning, and rinsing with warm water. Therefore, in the cooling step SP4 shown in FIG. 11, the container C is cooled by using the cooling water from the water supply source 210 shown in FIGS. 4 and 5. After rinsing, the container C is positively cooled by the cooling water to keep the container C at a low temperature and prevent the container C from remaining at a high temperature. As a result, by cooling the container C, it is possible to shorten the time until the container C is reused.

In step S45 of FIG. 11, when the control unit 100 starts the cooling step SP4, the control unit 100 opens the cooling solenoid valve 188 of FIG. 4 in step S46, and rotates the upper nozzle shown in FIG. 4 in step S47. By starting the motor 30 and rotating the first rinsing nozzle 21 which is the upper nozzle, the cooling water from the water supply source 210 is injected into the washed container C. As a result, the container C warmed with hot water can be cooled by the cooling water. The drainage damper 51 in step S48 is in the same drainage state as the drainage damper 51 in step 43 shown in FIG.

When the operation of the cooling process in step S49A is completed, the control unit 100 closes the cooling solenoid valve 188 of FIG. 5 in step S49, and the cooling step SP4 is completed in step S50. In step S51, the control unit 100 stops the upper nozzle rotation motor 30 shown in FIG. 4 to stop the rotation of the first rinsing nozzle 21, which is the upper nozzle.

<Draining process SP5>
When the cooling step SP4 shown in FIG. 11 is completed, the process proceeds to the draining step SP5 shown in FIGS. 7 and 12.

In step S52 of FIG. 12, the control unit 100 starts the draining step SP5. In step S53, the control unit 100 opens the solenoid valve 180 for draining in FIG. 4 to switch the switching valve 181. In step S54, the lower nozzle rotation motor 44 is activated to activate the lower nozzle pre-cleaning nozzle 42. The compressed air from the compressor 163 is injected to the inner surface side of the container C by using the pre-cleaning nozzle 42 while rotating the compressor 163.

Thereby, in step S56, the compressed air can remove the moisture still adhering to the cooled container C. At this time, in step S55, the drainage damper 51 remains in the drainage state as shown by the solid line.

When the draining process of the container C in step S56 of FIG. 12 is completed, the control unit 100 closes the draining solenoid valve 180 in step S57, and ends the draining process in step S58. At this time, in step S59, the rotation of the preliminary cleaning nozzle 42, which is the lower nozzle, is stopped. In step S60, the drainage damper 51 remains in the drainage state as shown by the solid line.

Returning to FIG. 7, when the draining step SP5 is completed, the process proceeds to step S61 and step S62, and the control unit 100 contracts the door opening / closing cylinders 13 and 14 shown in FIGS. The opening / closing doors 11 and 12 are opened to open the opening 15 of the processing chamber 5.

In step S63 of FIG. 7, the control unit 100 reverses and reverses the reversing drive motor 59 as shown in FIGS. 2 and 4, so that the holding member 70 is subjected to the pre-cleaning treatment to the draining treatment. While holding C, the cleaning position R in the work space WP is reversed by 180 degrees along the locus line J and heads toward the loading / unloading position (also referred to as the origin position) P. In this case, the control unit 100 reverses and reverses the reversing drive motor 59 at high speed to move the holding member 70 holding the container C from the cleaning position R to the loading / unloading position (also referred to as the origin position) P side. Will be moved to.

However, in step S64, when the holding member 70 holding the drained container C reaches the deceleration position of the reversing drive motor 59, the control unit 100 switches the reversing drive motor 59 from high speed to low speed for reverse reversal. Make it work. Then, in step S65, when the holding member 70 holding the container C arrives at the loading / unloading position P, which is the origin position, the control unit 100 stops the reversing drive motor 59, and the washing machine 1 performs a series of series. The operation from the pre-cleaning process to the draining process is completed.

Then, at the loading / unloading position P, the operator takes out the cleaned container C from the holding member 70, attaches the next container C to be cleaned to the holding member 70, and repeatedly performs the above-mentioned series of pre-cleaning processes. By performing the work up to the draining treatment, the washing machine 1 surely removes a part of meat, fat and blood deposits remaining in the container C such as a meat wagon, cools the washing machine 1, and then drains the water. It can be performed.

In this way, when removing the deposits remaining in the container C such as a wagon, the cleaning machine 1 devises and uses a preliminary cleaning liquid as a treatment liquid, a cleaning liquid, a rinsing liquid, and compressed air as necessary. By doing so, the container C can be washed efficiently and hygienically and reliably.

(Another embodiment)
FIG. 13 is a diagram showing another embodiment of the present invention.

In the embodiment of the present invention shown in FIGS. 1 to 3, the reversing drive motor 59 operates, so that the holding member 70 for holding the container C performs a 180-degree forward / reverse rotation operation and a 180-degree reverse rotation / reverse operation. The container C changes its position between the loading / unloading position P and the cleaning position R in the work space WP.

However, the present invention is not limited to this, and as shown in FIG. 13, a separate draining portion 400 may be provided between the loading / unloading position P and the cleaning position R in the work space WP. The drainer 400 holds the washed container C and rotates it at least once at a position between moving the washed container C from the washing position R to the loading / unloading position P, for example. As a result, the washed container C can be sufficiently drained by further mechanically rotating it. As a result, the washed container C taken out at the loading / unloading position P can be dried more easily.

As described above, the washing machine 1 shown in FIG. 4 of the embodiment of the present invention includes the container C in the processing chamber 5, and the loading / unloading unit 3 for taking out the washed container C from the processing chamber 5. The pre-cleaning nozzle 42 that pre-cleans the container C in the processing chamber 5 with the pre-cleaning liquid 302, and the cleaning nozzle 20 that cleans the container C after the pre-cleaning in the processing chamber 5 with the cleaning liquid 301. , 41 and the rinsing nozzles 21 and 43 for rinsing with the rinsing liquid 303 and the used preliminary cleaning liquid 302 coming out of the treatment chamber 5 are drained from the cleaning container C in the treatment chamber 5 to drain the treatment chamber 5 It is provided with a wastewater treatment unit 99 that circulates the used cleaning liquid 301 that comes out of the treatment chamber 5 and appropriately drains the used rinse liquid 303 that comes out of the treatment chamber 5. As illustrated in FIG. 9, the wastewater treatment unit 99 transfers the cleaning liquid 301 from the drainage of the preliminary cleaning liquid 302 after a predetermined time (first predetermined time T1) has elapsed from the start of cleaning the container C with the cleaning liquid 301. Switch to circulation.

As a result, the wastewater treatment unit 99 drains the used pre-cleaning liquid 302 discharged from the treatment chamber 5, circulates the used cleaning liquid 301 discharged from the treatment chamber 5, and discharges the used rinse liquid 303 discharged from the treatment chamber 5. Drain. After a predetermined first predetermined time T1 elapses after the cleaning of the container C is started by the cleaning liquid 301, the drainage of the preliminary cleaning liquid 302 is switched to the circulation of the cleaning liquid 301.

That is, for example, the drainage operation of the preliminary cleaning liquid 302 containing a part of meat and deposits of fat and blood is continued with a time delay of T1 for the first predetermined time after the cleaning of the container C is started. Let me. The first predetermined time T1 means that the pre-cleaning solution 302 and the cleaning solution 301 are preferably mixed during the cleaning after the start of the washing, and the pre-cleaning solution 302 disappears in the mixed pre-cleaning solution 302 and the cleaning solution 301, for example, blood. It is the time until the color disappears.

Therefore, by switching to the circulating state of the cleaning liquid 301, for example, the preliminary cleaning liquid 302 containing a part of meat and deposits of fat and blood can be prevented from entering the cleaning liquid 301. From this, when cleaning and removing the deposits from the container C, the cleaning machine 1 can efficiently and hygienically clean by devising and using the cleaning liquid at the time of cleaning.

The wastewater treatment unit 99 switches from the circulation of the cleaning liquid 301 to the wastewater of the rinsing liquid 303 after the lapse of a predetermined second predetermined time T2 after the start of rinsing of the container C by the rinsing liquid 303.

The second predetermined time T2 is, for example, the time until the supply of the cleaning liquid 301 is stopped and the cleaning liquid 301 that has already been used and discharged from the processing chamber 5 is switched to the rinsing liquid 303. Therefore, when the cleaning liquid 301 is switched to the rinsing liquid 303, the cleaning liquid 301 can be prevented from being drained to the outside, and only the rinsing liquid 303 used for rinsing the container C can be drained. As a result, the cleaning liquid 301 can be prevented from being drained to the outside, and the rinsing liquid 303 can be prevented from being mixed with the cleaning liquid 301. Therefore, the concentration of the detergent in the cleaning liquid 301 is diluted by the rinsing liquid 303. Can be prevented.

The container C is set so that the opening side of the container C faces downward in the processing chamber 5. The pre-cleaning nozzle 42 is arranged toward the inner surface side of the container C. The cleaning nozzles 20 and 41 are arranged toward both the outer surface side and the inner surface side of the container C, respectively. The rinsing nozzles 21 and 43 are arranged toward both the outer surface side and the inner surface side of the container C, respectively. When the cleaning nozzle 20 injects the cleaning liquid onto the outer surface side of the container C and when the rinsing nozzle 21 injects the rinsing liquid onto the outer surface side of the container, the upper nozzle rotating motor 30 as the first drive unit uses the cleaning nozzle. 20 and the rinse nozzle 21 are rotated. Further, in the lower nozzle rotary motor 44 as the pre-second drive unit, when the cleaning nozzle 42 injects the preliminary cleaning liquid onto the inner surface side of the container C and when the cleaning nozzle 41 injects the cleaning liquid onto the inner surface side of the container C. In addition, the preliminary cleaning nozzle 42 and the cleaning nozzle 41 are rotated.

As a result, the upper nozzle rotation motor 30 as the first drive unit can clean and rinse the outer surface side of the container C to every corner by rotating the cleaning nozzle 20 and the rinsing nozzle 21. .. Further, since the lower nozzle rotation motor 44 as the second drive unit rotates the pre-cleaning nozzle and the cleaning nozzle, the pre-cleaning process and the cleaning process can be performed on the inner surface side of the container C to every corner.
As shown in FIG. 4, the position of the cleaning nozzle 20 for injecting the cleaning liquid on the outer surface side of the container C and the position of the rinsing nozzle 21 for injecting the rinsing liquid on the outer surface side of the container C are offset from each other. As a result, the injection of the cleaning liquid from the cleaning nozzle 20 to the outer surface of the container C20 does not get in the way due to the presence of the rinsing nozzle 21C, and conversely, the injection of the rinsing liquid from the rinsing nozzle 21 to the outer surface of the container C is used for cleaning. The presence of the nozzle 20 does not get in the way. Therefore, the outer surface of the container C can be reliably cleaned and rinsed.

The wastewater treatment unit 99 has a wastewater damper 51 as a circulating wastewater switching member arranged in a cleaning liquid tank 54 for accommodating the cleaning liquid, and a dust basket 54C as a deposit filtering unit. The drainage damper 51 as a circulating drainage switching member drains the preliminary cleaning liquid 302 to the dust basket 54C as the adhering filter part in the drainage of the preliminary cleaning liquid, and circulates the cleaning liquid 301 in the cleaning liquid tank 54 in the circulation of the cleaning liquid 301. In the drainage of the rinse liquid 303, the rinse liquid is drained. As a result, the trash basket 54C as the circulating drainage switching member can drain the drainage of the preliminary cleaning liquid 302C containing the deposits removed from the container C to the trash basket 54C as the deposit filtration unit. Therefore, the dust basket 54C as the deposit filtering unit can remove the deposits removed from the container C from the preliminary cleaning liquid 302C.

The rinsed container C is cooled by cooling water in the treatment chamber 5, and the cooled container C is drained by blowing compressed air. As a result, for example, the container C that has been pre-washed, main-washed, and rinsed with warm water can be cooled by the cooling water, and the container C is cooled by keeping the container C at a low temperature to prevent the container C from remaining at a high temperature. As a result, it is possible to shorten the time until the container C is reused, and the container C can be reused quickly. After that, since the cooled container CC is drained by compressed air, the container C can be easily dried, and the hygienic aspect of the container C is improved.

Although the present invention has been described above with reference to embodiments, each embodiment is an example, and the scope of the invention described in the claims can be variously changed without departing from the gist of the invention. .. Each embodiment of the present invention can be arbitrarily combined.

For example, a wagon, which is an example of a container according to an embodiment of the present invention, is used for accommodating meat in a meat processing plant and transporting it by hand. However, the wagon may be made of a metal such as stainless steel or a resin such as polypropylene (PP). The wagon may be pushed by hand or may be movable by a motor or the like. The objects to be accommodated in the wagon may be meat raw materials, processed meat products, etc., fish and shellfish, processed seafood products, and the like. For the container for transporting fish and shellfish, the pre-cleaning step can be omitted at the time of cleaning.

1 Washing machine 2 Main body 3 Container loading / unloading section 4 Stand 5 Processing chamber 11 Opening / closing door 12 Opening / closing door 20 1st cleaning nozzle 21 1st rinsing nozzle 30 Upper nozzle rotary motor (example of 1st drive section)
41 Second cleaning nozzle 42 Preliminary cleaning nozzle 43 Second rinsing nozzle 44 Lower nozzle rotary motor (example of second drive unit)
51 Drainage damper for cleaning liquid (example of circulating drainage switching member)
52 Drainage switching cylinder 54 Cleaning tank 54C Garbage basket (part of deposit filtration part, wastewater treatment part)
55 Cleaning pump 56 Preliminary cleaning pump 57 Preliminary cleaning tank 58 Rinse tank 60 Reversing drive motor 70 Container holding member 99 Wastewater treatment unit 100 Control unit C Container WP Work space P Container loading / unloading position R Container cleaning position SP1 Preliminary cleaning process SP2 Cleaning process SP3 Rinse process SP4 Cooling process SP5 Draining process MP Preliminary cleaning liquid drainage mode MS Cleaning liquid circulation mode MR Rinse liquid drainage mode

Claims (2)

A washing machine that cleans containers in the processing room.
A loading / unloading unit for accommodating the container in the processing chamber and taking out the washed container from the processing chamber.
A pre-cleaning nozzle for pre-cleaning the container in the processing chamber with a pre-cleaning solution,
A cleaning nozzle that cleans the container after pre-cleaning in the processing chamber with a cleaning liquid, and
A rinsing nozzle for rinsing the container after cleaning in the processing chamber with a rinsing liquid,
A circulating wastewater treatment unit that drains the used pre-cleaning liquid from the treatment chamber, circulates the used cleaning liquid from the treatment chamber, and drains the used rinse liquid from the treatment chamber. Prepare,
The circulating wastewater treatment unit switches from drainage of the preliminary cleaning liquid to circulation of the cleaning liquid after a predetermined time has elapsed from the start of cleaning the container with the cleaning liquid, and
The circulating wastewater treatment unit has a circulating wastewater switching member arranged in a cleaning liquid tank for accommodating the cleaning liquid, and a deposit filtering unit.
In the drainage of the preliminary cleaning liquid, the circulating drainage switching member guides the preliminary cleaning liquid to the deposit filtering unit and drains the preliminary cleaning liquid filtered by the deposit filtering unit.
In the circulation of the cleaning liquid, the cleaning liquid is circulated in the cleaning liquid tank without passing through the deposit filtering unit, and in the drainage of the rinsing liquid, the rinsing liquid is guided to the deposit filtering unit and filtered by the deposit filtering unit. A washing machine characterized by draining liquid. Assuming that the predetermined time is the first predetermined time, the circulating wastewater treatment unit starts rinsing the container with the rinsing liquid, and after a predetermined second predetermined time elapses, the rinsing liquid is circulated from the rinsing liquid. The washing machine according to claim 1, wherein the washing machine is switched to wastewater.

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