JPH0551357B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a cleaning apparatus for liquid cleaning or steam cleaning of mechanical parts, electronic parts, medical instruments, and various other objects to be cleaned.

BACKGROUND TECHNOLOGY Conventionally, a cleaning table on which an object to be cleaned is placed is connected to an up-and-down movement mechanism so that it can be moved up and down.
The invention described in JP-A-62-193686 is known.

In addition, a shield is formed between the upper chamber and the cleaning tank to prevent the solvent from flowing out.
A device described in Japanese Utility Model Publication No. 56-31345 is known.

Problems to be Solved by the Invention However, in the invention described in JP-A No. 62-193686, when the object to be cleaned after the cleaning operation is taken out from the cleaning device, the upper chamber and the cleaning tank are in communication with each other. . Therefore, when the object to be cleaned is taken out from the upper chamber, the solvent gas from the cleaning tank flows out to the outside. If the cleaning liquid is trichlorethylene, trichlorotrifluoroethane, or the like, which is undesirable for diffusion into the atmosphere, it may cause health damage, air pollution, and the like.

In addition, the device described in Japanese Utility Model Publication No. 56-31345 uses a complicated structure in which multiple butterfly valves are operated by hooking levers as the washing platform rises, so the operation is difficult. It had problems with reliability.

The present invention is an attempt to solve the above-mentioned problems.The present invention is intended to solve the above-mentioned problems, and after liquid cleaning or steam cleaning of mechanical parts, electronic parts, medical instruments, and various other objects to be cleaned is carried out, the objects to be cleaned are stored in an upper chamber. In such a situation, the communication between the cleaning tank and the upper chamber is reliably cut off to prevent harmful substances from spreading outside even when the object to be cleaned is taken out.

Means for Solving the Problems The present invention solves the above problems by:
The first aspect of the invention is to connect the washing stand on which the object to be cleaned is placed to a vertical movement mechanism so as to be movable in the vertical direction. It is possible to move back and forth between the connected upper chamber and the cleaning tank, and as the washing table that stores the items to be cleaned in the upper chamber rises, a shield is installed to shield the upper chamber and the cleaning tank. , a shielding plate is fixed to the lower surface of the washing table, and this shielding plate is pressed against the opening edge of the communication port that communicates the washing tank and the upper chamber when the object to be cleaned is stored in the upper chamber as the washing table rises. The upper chamber and the cleaning tank are constructed to be as large as possible, and the shielding plate is configured to shield the upper chamber from the cleaning tank.

In addition, the second invention is such that the cleaning platform on which the object to be cleaned is placed is connected to an up-and-down movement mechanism so as to be movable in the vertical direction. An upper chamber connected to the upper part,
As the washing stand that can be moved back and forth between the washing table and the washing table stores the items to be cleaned in the upper chamber, a shield that shields the upper chamber and the washing tank is engaged on both sides of the lower surface of the washing table. When the cleaning plate is raised and the items to be cleaned are stored in the upper chamber, a shielding plate, which is pivoted in an inverted eight shape with a support shaft, is engaged with the opening edge of the communication port that communicates the cleaning tank and the upper chamber. The shield plate is positioned so as to be engageable with the engagement piece, and the shielding plate is engaged with the engagement piece to operate in the closing direction, thereby shielding the upper chamber from the cleaning tank.

In addition, the third invention is such that the cleaning table on which the object to be cleaned is placed is connected to a vertical movement mechanism so as to be movable in the vertical direction. An upper chamber connected to the upper part,
As the washing stand that can move back and forth between the washing tank and the objects to be washed are stored in the upper chamber rises, a shield that shields the upper chamber and the washing tank is installed on both sides of the lower surface of the washing table with support shafts. The shielding plate is supported by a shaft so that it can be opened and closed freely, and an engaging part is protruded outward from this support shaft, and this engaging part is connected to the upper chamber when the cleaning table is moved and the object to be cleaned is stored in the upper chamber. It protrudes so as to be able to engage with the opening edge of the communication port of the cleaning tank, and when the engaging portion engages, it rotates about the support shaft and seals the shielding plate, thereby shielding the upper chamber and the cleaning tank. It is composed of

In addition, the fourth invention is such that the cleaning table on which the object to be cleaned is placed is connected to an up-and-down movement mechanism so as to be movable in the vertical direction. An upper chamber connected to the upper part,
As the washing platform that can be moved back and forth between the cleaning tank and the objects to be cleaned is raised in the upper chamber, a shield that shields the upper chamber and the cleaning tank is moved up and down as the washing table rises. An engaging flange is formed protruding on the outer periphery of the washing table to abut against and engage with the opening edge of the communication port that communicates the washing tank and the upper chamber when the object is stored in the upper chamber. A butterfly valve is provided at this flow port, and this butterfly valve is connected to a drive chain driven by an external driving force to enable the flow port to be opened and closed. The cleaning tank is constructed so as to be shielded from the washing tank.

In addition, a processing machine for removing cleaning liquid adhering to the objects to be cleaned is connected to the upper chamber by a circulation path that is made of activated carbon that can adsorb solvents and that allows gas to circulate. Also good.

Further, the processing mechanism may be equipped with a heating means that heats and removes the cleaning liquid such as water, which is harmless even if released into the atmosphere, using hot air.

Function Since the present invention is constructed as described above, in order to perform liquid cleaning or steam cleaning of mechanical parts, electronic parts, medical instruments, and various other objects to be cleaned, the vertical movement mechanism is operated. A cleaning table with items placed on it is inserted into the cleaning tank, and liquid cleaning, steam cleaning, etc. are performed.

After the liquid cleaning and steam cleaning are completed, the vertical movement mechanism is operated again to move the object placed on the cleaning table.
It is stored in the upper chamber connected to the cleaning tank. Due to this storage, the shield shields the upper chamber and the cleaning tank. Therefore, even if the upper chamber is opened, the problem of cleaning liquid adhering to the object to be cleaned remains, but at least the solvent gas in the cleaning tank does not directly flow out to the outside. Therefore, the outflow of solvent gas to the outside can be significantly reduced. Furthermore, if the cleaning liquid adhering to the object to be cleaned can be properly treated, it is possible to reliably prevent the solvent from diffusing to the outside.

Therefore, if a processing mechanism for removing solvent gas, etc. that has adhered to the object to be cleaned and that has flowed in from the cleaning tank after cleaning is connected to the upper chamber through a circulation path through which the gas can circulate, the upper part of the object to be cleaned can be removed. Solvent gas can be removed when storing in the chamber.

Since the above treatment mechanism is connected to the upper chamber through a circulation path through which gas can circulate, the gas in the upper chamber can be repeatedly and continuously treated by the treatment mechanism. . Furthermore, since this treatment mechanism is made of activated carbon, it adsorbs and removes organic solvents adhering to the object to be cleaned each time it passes through, and ultimately the removal work can be carried out reliably down to an extremely low solvent concentration. I can do it. After this treatment, if the object to be cleaned is taken out of the upper chamber, no harmful gases will be diffused into the atmosphere or inhaled by the operator, allowing safe cleaning operations.

Furthermore, since the treatment of the solvent gas is carried out by repeatedly passing it through activated carbon, it is possible to miniaturize the treatment mechanism and perform high-level treatment with inexpensive equipment.

Embodiment An embodiment of the first invention will be described below with reference to FIGS. It is connected to a suitable vertical movement mechanism 3 such as a device, and is formed to be movable in the vertical direction.

By operating the vertical movement mechanism 3, this washing table 1 moves the object 2 placed on the top surface between the upper chamber 5 connected to the upper part of the washing tank 4 and the washing tank 4. The upper chamber 5 and the cleaning tank 4 can be shielded by a shield 6.

This shield is formed by fixing a shielding plate 7 on the lower surface of the washing table 1 so as to protrude to the outer periphery of the washing table 1. Further, an inverted L-shaped push-up frame 8 protrudes from the upper surface of the washing table 1 with an interval between the objects 2 to be washed. Further, a lid 11 is placed and covered without being fixed to a communication port 10 that communicates the cleaning tank 4 and the upper chamber 5, thereby closing the communication port 10. This lid body 11 is attached to the washing stand 1
When the object 2 to be cleaned is stored in the upper chamber 5 as the object 2 rises, the object 2 is pushed up by the push-up frame 8 to open the communication port 10, as shown in FIG.

In addition, as the object to be cleaned 2 is stored in the upper chamber 5, an annular wall 1 of the communication port 10 protrudes toward the cleaning tank 4 side.
A shielding plate 7 is pressed against the opening edge 13 of No. 2 to shield the upper chamber 5 and the cleaning tank 4.

Further, in the embodiment of the second invention, the shielding between the cleaning tank 4 and the upper chamber 5 by the shielding body 6 is performed by engaging both sides of the lower surface of the cleaning table 1, as shown in FIGS. 3 and 4. The piece 14 is provided with a tapered surface 15 in an inverted V-shape and protrudes.

In addition, a shielding plate 7 is pivotally supported in an inverted V-shape by a support shaft 16 on the outer periphery of the opening edge 13 of the communication port 10 provided between the upper chamber 5 and the cleaning tank 4, and this shielding plate 7 is supported downwardly. It is in a suspended state. Furthermore, a roller 19 is fixedly protruded from the outer surface of the lower end of the suspended shielding plate 7.

Then, when the object 2 to be cleaned is stored in the upper chamber 5 as the washing table 1 rises, the rollers 19 of the shielding plate 7 engage with the tapered surface 15 of the engagement piece 14 to press the shielding plate 7 upward. . Due to this pressing, the rollers 19 slide on the tapered surface 15, and the shielding plate 7 rotates in the closing direction about the support shaft 16 as a fulcrum. Then, as shown in FIG. 4, the upper chamber 5 and the cleaning tank 4 are shielded.

Further, in the embodiment of the third invention, the cleaning tank 4 and the upper chamber 5 are shielded by the shielding body 6, as shown in FIGS. 5 and 6, by using a pair of flat shielding plates 7. The washing table 1 is pivotally supported on both sides of the lower surface by support shafts 16 so as to be openable and closable. Furthermore, an engaging portion 9 projects outward from this support shaft 16 .

Further, a downward engaging protrusion 34 projects from the outer periphery of the opening edge 13 of the communication port 10 provided between the upper chamber 5 and the cleaning tank 4.

Then, when the object to be cleaned 2 is stored in the upper chamber 5 as the cleaning table 1 moves, the engaging portion 9 is moved to the engaging protrusion 34.
engage and press upward. Due to this pressure, the shielding plate 7 rotates about the support shaft 16 and seals the communication port 10. Due to this sealing, the upper chamber 5 and the cleaning tank 4
This is to shield the Further, in this embodiment, push-up frames 8 are linearly projected from the four corners of the upper surface of the washing table 1.

Further, in the embodiment of the fourth invention, the shield 6 is attached to the washing table 1 as shown in FIGS. 7 and 8.
An engaging flange 17 is protruded from the outer periphery of the holder. This engaging collar 17
, the upper chamber 5 of the object to be cleaned 2 as the cleaning table 1 rises.
The opening edge 13 of the communication port 10 is formed to have a size that allows it to abut against and engage with the opening edge 13 of the communication port 10 when stored in the holder.

Further, a plurality of flow ports 20 through which the cleaning liquid 18 flows are formed in the washing table 1. A butterfly valve 21 is provided in each of the flow ports 20 so as to be rotatable about a rotation shaft 22. Then, by operating this butterfly valve 21,
By closing the flow port 20, the upper chamber 5 and the cleaning tank 4 are shielded.

The butterfly valve 21 is configured to open and close the flow port 20 by engaging the drive chain 23 with the rotating shaft 22 and driving the drive chain 23 with an external driving force. .

Further, the drive chain 23 is an electric motor, in which a sprocket wheel 26 of the drive chain 23 is connected to a worm gear 25 of a rotating shaft 24 provided on the vertical moving mechanism 3, and the rotating shaft 24 is provided at the upper end of the vertical moving mechanism 3. , a drive mechanism 27 such as a drive handle.

In the structure as described above, after mechanical parts, electronic parts, medical instruments, and other various objects 2 are washed with liquid or steam, the vertical movement mechanism 3 is activated to move them onto the washing table 1. The placed object 2 to be cleaned is stored in an upper chamber 5 connected to the cleaning tank 4.

This storage is performed with the shield 6 shielding the upper chamber 5 and the cleaning tank 4, so even if the upper chamber 5 is open to the outside, the cleaning liquid attached to the object 2 to be cleaned will not be removed.
Although the problem No. 8 remains, at least the solvent gas in the cleaning tank 4 does not leak out to the outside, and the outflow of the solvent gas to the outside can be significantly reduced.

Further, in the first invention, the shielding between the upper chamber 5 and the cleaning tank 4 by the shielding body 6 is achieved by protruding the shielding plate 7 to the outer periphery of the cleaning table 1, and attaching the shielding plate 7 to the communication port 10.
Since the opening edge 13 of the annular wall 12 is pressed against the opening edge 13 of the annular wall 12, the structure can be simplified and an inexpensive product can be obtained.

Further, in the second invention, the upper chamber 5 and the cleaning tank 4 are shielded by the shield 6 by suspending the engaging pieces 14 protruding from both sides of the lower surface of the cleaning table 1 on the outer periphery of the communication port 10. Press against the shielding plate 7, and press this shielding plate 7,
It rotates about the support shaft 16 as a fulcrum and shields the upper chamber 5 and the cleaning tank 4.

Therefore, there are manufacturing and usage errors in the engagement piece 14.
Even if some deformation occurs, the communication port 1 through the shielding plate 7
0 can be reliably closed.

Further, in the embodiment of the third invention, the shielding between the upper chamber 5 and the cleaning tank 4 by the shielding body 6 is achieved by installing a pair of flat shielding plates 7 on both sides of the lower surface of the cleaning table 1 on support shafts 16. It is pivoted so that it can be opened and closed freely. When the object 2 to be cleaned is stored in the upper chamber 5, the engaging portion 9 is engaged with the engaging protrusion 34, and the shielding plate 7 is rotated about the support shaft 16, thereby sealing the communication port 10. Therefore, even if some error or deformation occurs in the shielding plate 7 during manufacturing or use, the communication port 10 can be reliably closed by the shielding plate 7. In addition, the structure is simple and inexpensive manufacturing is possible.

In addition, in the embodiment of the fourth invention, the shielding between the upper chamber 5 and the cleaning tank 4 by the shielding body 6 is achieved by providing a butterfly valve 21 in the flow port 20 of the cleaning liquid 18 provided in the cleaning table 1; Since this butterfly valve 21 is configured to be opened and closed by external driving force,
The upper chamber 5 and the cleaning tank 4 are smaller than those of the above-mentioned inventions.
can be accurately and quickly shielded.

If the cleaning liquid 18 adhering to the object to be cleaned 2 can be properly treated with the upper chamber 5 sealed as described above, it is possible to reliably prevent the solvent from diffusing to the outside.

To do this, the cleaning liquid 1 attached to the object 2 to be cleaned must be
As shown in FIGS. 5 and 6, a processing mechanism 32 for removing 8 may be connected to the upper chamber 5 through a circulation path 33 through which gas can circulate.

This processing mechanism 32 may be equipped with activated carbon capable of adsorbing a solvent, and further heats and removes the cleaning liquid 18 such as water with hot air, which is harmless even if released into the atmosphere. It may be equipped with heating means.

However, it is not preferable to use means for cooling and condensing the solvent gas in the processing mechanism. This is because, at the normal condensation temperature of 0°C to 20°C, a constant vapor pressure is maintained in the solvent, producing a large amount of residual gas, and no matter how many times the cooling and condensation is repeated,
This is because the vapor pressure does not decrease.

If the processing mechanism 32 is made of activated carbon, the solvent gas in the upper chamber 5 will be adsorbed each time it passes through the activated carbon, reducing the solvent concentration, and the process will be repeated until the solvent gas is completely removed. It becomes possible to process continuously by the processing mechanism 32.

Therefore, if it is of a type in which the concentration decreases each time it passes through the processing mechanism 32, it can be used in addition to activated carbon.
As mentioned above, it may be a method in which the cleaning liquid 18 such as water is heated and removed with hot air, or an eliminator method in which a highly viscous solvent such as kerosene is blown off by air blow and liquefied and recovered.

If the object to be cleaned 2 is taken out from the upper chamber 5 after this treatment, the cleaning operation can be carried out safely without the harmful gases being diffused into the atmosphere or being inhaled by the operator.

Further, since the object 2 to be cleaned to which the cleaning liquid 18 has adhered is stored in the upper chamber 5 without exiting from the cleaning device, and the cleaning liquid 18 adhered to the object 2 is removed, the object 2 to be cleaned is not sent to the processing mechanism 32 as in the conventional case. Not only does it not require a means for transporting the object 2 to be cleaned, but it also does not require the diffusion of a solvent.

Effects of the Invention Since the present invention is configured as described above, after the object to be cleaned is cleaned with liquid or steam,
When stored in the upper chamber, the shield shields the upper chamber and the cleaning tank. Therefore, even if the upper chamber is opened to the outside, the problem of cleaning liquid adhering to the object to be cleaned remains, but at least the solvent gas in the cleaning tank will not leak out to the outside, and the leakage of solvent gas to the outside will be greatly reduced. can be reduced to

Further, the upper chamber and the cleaning tank can be reliably shielded with a simple configuration, and an inexpensive and economical device can be provided.

Furthermore, since the above-mentioned airtight upper chamber can be formed directly above the cleaning tank, it is possible to make the apparatus compact.

By shielding the upper chamber and the cleaning tank while the items to be cleaned are stored in the upper chamber, cleaning liquid attached to the items to be cleaned can be removed from the upper part of the cleaning tank during the process of storing the items to be cleaned in the upper chamber. This makes it extremely easy to treat the solvent gas that has flowed into the chamber.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view showing the state of cleaning work, FIG.
FIG. 4 is a cross-sectional view showing the cleaning state of the second embodiment, and FIG. 5 is a cross-sectional view showing the cleaning state of the third embodiment. FIG. 6 is a cross-sectional view showing the storage condition in the upper chamber of the third embodiment and shows the state in which the cleaning liquid processing mechanism is connected;
The figure is a cross-sectional view showing the cleaning operation state of the fourth embodiment, and FIG. 8 is a cross-sectional view showing the fourth embodiment stored in the upper chamber. DESCRIPTION OF SYMBOLS 1...Cleaning stand, 2...Object to be cleaned, 3...Vertical movement mechanism, 4...Cleaning tank, 5...Upper chamber, 6...Shielding body, 7...Shielding plate, 9...Engaging part , 10... Communication port, 13... Opening edge, 14... Engaging piece, 16...
... Support shaft, 17 ... Engagement collar, 18 ... Cleaning liquid, 2
0... Distribution port, 21... Butterfly valve, 22...
Rotation shaft, 23... Drive chain, 28... Actuation piece, 31... Engagement protrusion, 32... Processing mechanism, 33
...Circulatory path.

Claims (1)

[Scope of Claims] 1. By connecting the washing stand on which the object to be cleaned is placed to a vertical movement mechanism so as to be movable in the vertical direction, the object to be cleaned placed on the washing stand is moved to the upper part of the washing tank. A shielding body that is movable back and forth between an upper chamber provided in connection with the washing tank and the washing tank, and that shields the upper chamber and the washing tank as the washing table for storing the object to be cleaned in the upper chamber rises. is formed by fixing a shielding plate to the lower surface of the washing table, and this shielding plate is attached to the opening edge of the communication port that communicates the washing tank and the upper chamber when the object to be cleaned is stored in the upper chamber as the washing table rises. A cleaning device characterized in that it has a size that can be pressed and is configured so that an upper chamber and a cleaning tank are shielded by the shielding plate. 2. A washing stand on which the object to be cleaned is placed is connected to an up-and-down moving mechanism so that the object to be cleaned is connected to the upper part of the washing tank by forming the washing table to be movable in the vertical direction. As the washing stand that can move back and forth between the upper chamber and the washing tank and stores the items to be washed in the upper room rises, a shield that shields the upper chamber and the washing tank is moved to the bottom of the washing stand. A shielding plate with engaging pieces protruding from both sides and pivoted in an inverted eight-shape by a support shaft at the opening edge of the communication port that communicates the cleaning tank and the upper chamber when the cleaning table is raised and the items to be cleaned are stored in the upper chamber. is located so as to be engageable with the engaging piece, and the shielding plate is engaged with the engaging piece to operate in the closing direction, thereby shielding the upper chamber and the cleaning tank. cleaning equipment. 3. The cleaning table on which the object to be cleaned is placed is connected to a vertical movement mechanism so as to be movable in the vertical direction, so that the object to be cleaned placed on the cleaning table is connected to the upper part of the cleaning tank. As the washing stand that can move back and forth between the upper chamber and the washing tank and stores the items to be washed in the upper room rises, a shield that shields the upper chamber and the washing tank is moved to the bottom of the washing stand. The shielding plate is pivotally supported by support shafts on both sides so that it can be opened and closed, and an engaging portion is protruded outward from the support shaft. , protrudes so as to be able to engage with the opening edge of the communication port between the upper chamber and the cleaning tank, and the engagement of this engaging portion rotates around the support shaft and seals the shielding plate, thereby connecting the upper chamber and the cleaning tank. A cleaning device characterized in that it is configured to shield. 4. The cleaning table on which the object to be cleaned is placed is connected to a vertical movement mechanism so as to be movable in the vertical direction, so that the object to be cleaned placed on the cleaning table is connected to the upper part of the cleaning tank. As the washing table that can move back and forth between the upper chamber and the cleaning tank and stores the items to be cleaned in the upper chamber rises, the shield that shields the upper chamber and the washing tank is moved as the washing table rises. An engaging flange is formed protruding on the outer periphery of the washing table to abut against and engage with the opening edge of the communication port that communicates the washing tank and the upper chamber when the object to be cleaned is stored in the upper chamber. A butterfly valve is provided in this flow port, and this butterfly valve is connected to a drive chain driven by an external driving force to enable the flow port to be opened and closed. A cleaning device characterized in that it is configured to shield an upper chamber and a cleaning tank. 5. A claim characterized in that a processing mechanism for removing cleaning liquid adhering to the object to be cleaned is formed of activated carbon capable of adsorbing a solvent and connected to the upper chamber through a circulation path through which gas can circulate. Terms 1, 2,
3. The cleaning device described in 4. 6. The cleaning device according to claim 5, wherein the processing mechanism includes a heating means for heating and removing the cleaning liquid such as water, which is harmless even if released into the atmosphere, with hot air.