JP4194891B2 - Powder processing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a technology for adjusting a raw material charge amount in a powder processing apparatus that performs processing such as granulation, coating, mixing, stirring, and drying of powder with the powder in a fluidized state.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, fluidized bed apparatuses capable of performing granulation coating and drying with a single apparatus have been widely used as powder processing apparatuses for producing pharmaceuticals and foods. FIG. 11 is an explanatory diagram showing a configuration of a general fluidized bed granulation coating apparatus. As shown in FIG. 11, the fluidized bed granulation coating device 71 is configured to include a powder particle processing unit 72, an air supply unit 73, and a control unit 74. The granular material processing unit 72 has a three-part structure including a raw material container 75, a spray casing 76, and a filter casing 77, and is placed on a gantry 78.
[0003]
The raw material container 75 has a truncated cone shape, and a bottom plate formed of a perforated plate or a wire mesh is disposed at the lower end. The spray casing 76 is installed at the upper end of the raw material container 75, and a spray gun is installed inside. The filter casing 77 is installed at the upper end of the spray casing 76, and an exhaust bag filter is installed inside. Air is supplied from the air supply unit 73 to the granular material charged into the raw material container 75. By this air, the granular material becomes a fluid state in the raw material container 75, and the liquid is sprayed there from the spray gun, whereby the granular material is subjected to granulation coating processing.
[0004]
On the other hand, in such a fluidized bed granulation coating apparatus 71, it may be necessary to change the processing amount depending on the type of product. In order to reduce the amount of processing, it is necessary to reduce the amount of raw material charged accordingly, but if a normal material container for mass processing is used, the flow state may not be controlled well. Therefore, in the fluidized bed granulation coating apparatus 71, when the processing amount is small, the filter casing 77 is not changed, and the raw material container 75 and the spray casing 76 are exchanged for a small amount processing.
[0005]
In the raw material container for small amount processing, the diameter of the eye plate is smaller than that of the normal specification, the whole height is formed smaller, and the charging capacity of the raw material is smaller than the normal specification. Further, in the spray casing 76, the spray gun can be installed below the normal specification, so that the liquid can be reliably sprayed onto the fluidized bed of a small amount of raw material.
[0006]
By the way, in such a fluidized bed granulation coating apparatus, as shown in Japanese Patent Application Laid-Open No. 2001-219050 and Japanese Patent Application Laid-Open No. 2002-95952, a plurality of granular material processing units are provided, and each process is continuously performed for production. Devices that improve the performance have also been proposed. For example, in the apparatus disclosed in Japanese Patent Application Laid-Open No. 2002-95952, six functional stations having functions of each step of the fluidized bed granulation coating process are arranged at equal intervals on the circumference. And the granular material storage container mounted on the turntable moves each functional station sequentially, and the granulation coating process is continuously implemented.
[0007]
The functional station is arranged in the upper processing section at the upper part of the apparatus, and is provided on the circumference corresponding to each process of charging / discharging, preheating mixing, spraying and drying. Each station will be equipped with a bag filter and spray gun. Below the upper processing unit, an intermediate storage unit including a storage container in which powder particles are stored is disposed. The container is composed of a cylindrical straight cylinder part and a truncated cone-shaped raw material container part, and is attached to the turntable at equal intervals on the circumference like the function station. A lower air supply unit including an air supply station that supplies hot air into the raw material container is provided below the intermediate housing unit.
[0008]
The storage container that stores the powder particles sequentially moves through the function stations, and a predetermined process is performed at each position. In other words, when the granular material is supplied to the storage container at the charging / discharging station and goes through each function station, granulation, coating, and drying are performed, and the processing returns to the charging / discharging station. At the charging / discharging station, the granulated product is discharged, and new raw material is charged after discharging the product. Each time the container is rotated 1/6, new raw materials are charged and discharged, and batch-type granulation coating processing is continuously performed.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-219050 [Patent Document 2]
JP 2002-95952 A [0010]
[Problems to be solved by the invention]
However, in the granulation coating apparatus that performs such continuous processing, since the part for processing the granular material has a two-part structure, unlike the apparatus of FIG. There was a problem that I could not. That is, in the continuous processing type apparatus, both the filter and the spray gun in the apparatus of FIG. 11 are disposed at the functional station of the upper processing section, and the container is disposed so as to be rotatable below the functional station. For this reason, the spray gun in the upper processing section can move downward only to a position that does not interfere with the rotational movement of the processing container. Therefore, when a container for small amount processing in which the raw material container part is reduced in size and the straight cylinder part is extended, there is a problem that the distance between the spray gun and the raw material container becomes long and an appropriate spray distance cannot be maintained.
[0011]
The objective of this invention is providing the granular material processing apparatus which can adjust a raw material preparation amount, without accompanying the large remodeling of an apparatus.
[0012]
[Means for Solving the Problems]
The granular material processing apparatus of the present invention is a powder comprising a raw material container that accommodates a granular material, a spray casing installed above the raw material container, and a filter casing installed above the spray casing. It is a granule processing apparatus, characterized in that it has an adjustment container that is detachably provided in the raw material container and formed in a smaller capacity than the raw material container.
[0013]
In the present invention, since a small-capacity adjustment container is detachably provided in the raw material container, a fluidized bed formed by the raw material is formed by charging the raw material into the adjustment container using this adjustment container at the time of a small amount treatment. The distance from the spray gun can be reduced. Therefore, the position of the fluidized bed can be brought close to the spray gun without changing the position of the spray gun. For this reason, the distance between the fluidized bed and the spray gun can be properly maintained even during a small amount of processing, and the granulation coating processing can be performed without reducing the product quality and yield. In addition, it is only necessary to attach the adjustment container in the raw material container for small volume processing, and it is easy to respond to changes in the amount charged without major modification of the equipment, and it is easy to maintain appropriate processing conditions. The amount of charge can be changed at a low cost with simple operation.
[0014]
Moreover, the other granular material processing apparatus of the present invention is disposed below the upper processing unit, an upper processing unit including a plurality of functional stations having functions of respective steps constituting the fluidized bed granulation coating process, An intermediate storage unit including a storage container in which powder particles are stored and a moving unit that sequentially moves the storage container to each functional station; and disposed below the intermediate storage unit, and in the powder storage container A granular material processing apparatus having a lower air supply unit including an air supply station for supplying air, wherein the storage container includes a cylindrical straight cylindrical part, a truncated cone-shaped raw material container, and the raw material And an adjustment container that is detachably provided in the container and has a smaller capacity than the raw material container.
[0015]
In the present invention, in the granular material processing apparatus having a plurality of function stations, a small capacity adjustment container is detachably provided in the raw material container. By charging the raw material therein, the distance between the fluidized bed formed by the raw material and the spray gun can be reduced. Therefore, even in a powder processing apparatus of a type in which the position of the spray gun cannot be changed greatly downward, the position of the fluidized bed can be brought close to the spray gun. For this reason, the distance between the fluidized bed and the spray gun can be properly maintained even during a small amount of processing, and the granulation coating processing can be performed without reducing the product quality and yield. In addition, it is only necessary to attach the adjustment container in the raw material container for small volume processing, and it is easy to respond to changes in the amount charged without major modification of the equipment, and it is easy to maintain appropriate processing conditions. The amount of charge can be changed at a low cost with simple operation.
[0016]
In the granular material processing apparatus, as the adjustment container, a truncated cone-shaped tapered portion, a flange formed integrally with the tapered portion at a small-diameter side end portion of the tapered portion, and attached to face the flange. You may use what has a ring plate and the countersink plate clamped between the said flange and the said ring plate.
[0017]
Moreover, in the said granular material processing apparatus, you may form the said adjustment container with a transparent raw material. Furthermore, a viewing window that can visually recognize the inside of the raw material container may be provided, and the adjustment container may be attached to face the viewing window. Thereby, the state in the adjustment container can be visually confirmed from the viewing window, and even if the adjustment container is used, the visibility of the processing state is not hindered. Thereby, even at the time of a small amount processing, the state of a granular material can be confirmed from the outside, and a processing situation can be grasped easily.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a configuration of an apparatus main body of a fluidized bed granulation coating apparatus according to an embodiment of the present invention, with a part thereof cut away. FIG. 2 is a cross-sectional view showing a state of the fluidized bed granulation coating apparatus of FIG.
[0019]
In the fluidized bed granulation coating apparatus (powder particle processing apparatus) 1 in FIG. 1, an upper processing unit 10 having a plurality of functional stations 13 is provided on the upper side of the apparatus. Below the upper processing unit 10, an intermediate housing unit 20 is provided that is rotatably provided in the direction of the arrow, and a lower air supply unit 30 is further disposed below the intermediate housing unit 20. . Functions of each process constituting the fluidized bed granulation coating process are assigned to the function station of the upper processing unit 10. A plurality of granular material storage containers 22 (hereinafter abbreviated as containers 22) that store the granular materials are arranged radially from the rotation center in the intermediate storage portion 20. The lower air supply unit 30 is placed on the floor and supplies air to the intermediate storage unit 20.
[0020]
3A is a plan view of the upper processing unit 10, and FIG. 3B is a sectional view thereof. As shown in FIGS. 2 and 3 (B), the upper processing unit 10 is supported by a support column 11 disposed on the side thereof. The upper processing unit 10 is fixed to a predetermined height from the floor surface by the support 11. As shown in FIGS. 1 and 3, a chamber 12 is provided at the center of the upper processing unit 10. Around the chamber 12, a plurality of functional stations 13 are provided at the radiation positions around the chamber 12. The functional stations 13 are arranged at equal intervals on the same circumference surrounding the central chamber 12. In this apparatus, as the function station 13, a charging / discharging station 13a, a preheating mixing station 13b, a granulating coating station 13c to 13e, and a drying station 13f (hereinafter, the station is abbreviated as ST) are provided in the clockwise direction. It has been.
[0021]
The input / discharge ST13a is formed in a right cylindrical shape with the upper end closed and the lower end opened as it is to the lower connection port 13g. A raw material supply pipe 14, an exhaust connection pipe 15a, and a product transport pipe 19 are connected to the input / discharge ST13a and communicate with the internal space of the input / discharge ST13a. The raw material supply pipe 14 is connected to a raw material storage container (not shown) provided outside the apparatus. The exhaust connection pipe 15a communicates with the chamber 12, and a damper 17 for adjusting the passing air volume is provided therein. The product transport pipe 19 is connected to the ceiling side of the input / discharge ST13a, and the outer end side is connected to a suction blower 41 provided outside the granulator.
[0022]
Note that the damper 17 of the exhaust connection pipe 15a is always closed. In this respect, the exhaust connection pipe 15a is not necessarily provided in the input / discharge ST13a. However, from the viewpoint of versatility of the apparatus, it is desirable that the function assigned to each function ST can be changed as appropriate. Therefore, the exhaust connection pipe 15a is also provided in the input / discharge ST13a.
[0023]
The inner end side of the product transport pipe 19 is connected to a suction / discharge device 42 installed in the cylinder. The suction / discharge device 42 is installed so as to be movable up and down in the container 22, and an umbrella-shaped air inlet 43 is provided at the tip. A flexible tube 47 is connected between the air inlet 43 and the product transport pipe 19. The intake port 43 is fixed to the piston rod 49 of the air cylinder 48. The air cylinder 48 is fixed to the ceiling portion of the input / discharge ST13a. As a result, the air inlet 43 is accommodated and disposed in the input / output ST 13a in a form suspended from the ceiling. When the air cylinder 48 is operated, the piston rod 49 is driven in the vertical direction, and the intake port 43 is also moved up and down accordingly. Normally, the intake port 43 is held at the upper storage position, and when the piston rod 49 is extended, it is lowered to the lowest position.
[0024]
As shown in FIG. 1, each of the preheating mixing station 13b and the granulated coatings ST13c, 13d, and 13e is formed in a straight cylinder whose upper end is closed in the same manner as the charging / discharging ST13a. Inside the cylinder, a bag filter 16a and a spray gun 16b are provided. Above the bag filter 16a, a pulse jet nozzle 16c for eliminating clogging of the bag filter 16a is provided. As shown in FIG. 3, exhaust connection pipes 15b to 15e are connected to the preheating mixing station 13b and the granulated coatings ST13c to 13e, and communicate with the internal space of each station. The exhaust connection pipes 15b to 15e communicate with the chamber 12, and a damper 17 is provided in each exhaust connection pipe 15b to 15e.
[0025]
In the preheating mixing station 13b, prior to the granulating process, a preheating mixing process of the granular material is performed. In granulation coating ST13c-13e, the process which divided the granulation process further like the preliminary granulation, the 1st granulation process, the 2nd granulation process, etc. in order is carried out one by one. Note that the granulating coatings ST13c to 13e may be configured to have the same granulating function. Further, granulation and coating may be performed together, or only coating may be performed. Further, the granulation coating process including the preheating mixing station 13b may be performed in four steps.
[0026]
The drying ST13f is also formed in a straight cylinder with the upper end closed, similar to the input / discharge ST13a. Inside the tube, a bag filter 16a and a pulse jet nozzle 16c for eliminating clogging of the bag filter 16a are provided. An exhaust connecting pipe 15f is connected to the drying ST 13f and communicates with the internal space of the exhaust connecting pipe 15f. The exhaust connecting pipe 15f communicates with the chamber 12, and a damper 17 is provided therein.
[0027]
As described above, each of the STs 13a to 13f communicates with the chamber 12 through the exhaust connection pipes 15a to 15f. An exhaust pipe 18 is provided in the chamber 12, and exhaust from each station is exhausted outside the apparatus through the exhaust pipe 18. When exhausting, it is possible to select a station to be exhausted by adjusting the opening / closing degree of the damper 17 to adjust the exhaust amount, or if necessary, closing some of the dampers 17.
[0028]
An intermediate storage unit 20 is disposed below the upper processing unit 10. 4A is a plan view of the intermediate accommodating portion 20, and FIG. 4B is a sectional view thereof. As shown in FIGS. 1 and 4, the intermediate container 20 is provided with a plurality of containers 22 from the rotation center 21 to the radiation position corresponding to the positions of the functions ST <b> 13 of the upper processing unit 10. Each container 22 has the same shape, and includes a cylindrical straight tube portion 22a and a truncated cone-shaped raw material container portion (raw material container) 22b. An upper connection port 23a that is opened as it is is formed above the straight tube portion 22a. The upper connection port 23a is formed as an opening in a disk-shaped turntable 24a.
[0029]
The turntable 24 b serves as a moving means for the container 22 and rotates around the rotation center 21. Below the rotation center 21, a rotary shaft 25 that is driven by a motor 26 and that can be moved up and down is disposed. When the turntable 24b is rotated about the rotation center 21 by the motor 26, the container 22 is also rotated accordingly. The turntable 24b stops so that each function ST13 of the upper processing unit 10 and the position of the container 22 of the intermediate storage unit 20 are aligned. That is, the turntable 24b rotates so that the lower connection port 13g of each function ST13 and the upper connection port 23a of the container 22 can be aligned to be connectable.
[0030]
A narrow lower connection port 23b that is opened as it is is formed below the raw material container portion 22b. The lower connection port 23b is formed in the disc-shaped turntable 24b. The turntables 24a and 24b are arranged to face each other with the upper connection port 23a and the lower connection port 23b associated with each other. The container 22 is formed by connecting the connection ports 23a and 23b in a cylindrical shape with the straight tube portion 22a and the raw material container portion 22b.
[0031]
The lower connection port 23b is provided with a countersink plate 23c formed of a perforated plate or a metal mesh as a powder particle fall prevention member. By the eye plate 23c, the accommodated granular material is prevented from spilling from the container 22 while the container 22 moves to the next station.
[0032]
A frustoconical adjustment container 51 is detachably provided at the upper end of the raw material container 22b. FIG. 5 is a cross-sectional view of the raw material container portion 22b, and FIG. 6 is a perspective view of the adjustment container 51. As shown in FIGS. 5 and 6, the adjustment container 51 is integrally formed with the tapered portion 52 formed in a mortar shape and the tapered portion 52 at the small diameter side end portion (lower end in FIGS. 5 and 6) of the tapered portion 52. And a ring plate 55 which is disposed opposite to the lower surface side of the flange 53 and is fixed to the flange 53 with a bolt 54. The tapered portion 52, the flange 53, and the ring plate 55 are made of a transparent material such as acrylic resin or polycarbonate resin, and the inside of the tapered portion 52 can be visually recognized from the outside.
[0033]
At the upper end of the tapered portion 52, an attachment portion 56 that fits with the inner wall surface of the raw material container portion 22b is formed. The outer peripheral surface of the attachment portion 56 is inclined in the same manner as the inner wall surface of the raw material container portion 22b, and an O-ring 57 is attached so as to be airtightly connected to the inner wall surface. The lower end of the tapered portion 52 is an opening 58 and communicates with the hole 59 of the ring plate 55. An eye plate 61 is sandwiched between the flange 53 and the ring plate 55. The eye plate 61 is attached so as to close the opening 58 and the hole 59.
[0034]
The capacity in the adjustment container 51 is about 1/3 of the capacity of the raw material container part 22b, and the granulation coating process is performed by attaching the adjustment container 51 when processing a small amount. At this time, as shown in FIG. 5, the position of the eye plate 61 is higher than the eye plate 23c of the raw material container portion 22b. That is, the position is closer to the spray gun 16b. In the fluidized bed granulation coating apparatus 1, the position of the spray gun 16 b is limited to the inside of the upper processing unit 10 because the intermediate housing unit 20 rotates and moves. For this reason, as described above, if the raw material container portion 22b itself is simply replaced with a small one, the distance between the fluidized bed and the spray gun 16b is increased, and appropriate processing conditions cannot be ensured.
[0035]
On the other hand, in the structure by this invention, the distance of the fluidized bed which a small amount of raw materials form with the adjustment container 51, and the spray gun 16b can be made small. That is, the position of the fluidized bed can be brought close to the spray gun 16b while the position of the spray gun 16b is kept as it is. For this reason, the distance between the fluidized bed and the spray gun 16b can be properly maintained even during a small amount of processing, and the granulation coating processing can be performed without reducing the product quality and yield. In addition, for the small-volume processing, it is only necessary to attach the adjustment container 51 in the raw material container portion 22b, and it is possible to easily cope with a change in the charged amount without making a major modification of the apparatus. Therefore, it is possible to change the preparation amount at a low cost by a simple operation while maintaining appropriate processing conditions.
[0036]
Moreover, the adjustment container 51 is arrange | positioned in the raw material container part 22b corresponding to the observation window 62 (indicated with a dashed-dotted line in FIG. 5) provided in the raw material container part 22b. That is, the adjustment container 51 is arranged with the transparent tapered portion 52 facing the viewing window 62. The state in the adjustment container 51 can also be visually confirmed from the observation window 62, and even if the adjustment container 51 is used, the visibility is not hindered. Thereby, even at the time of a small amount processing, the state of a granular material can be confirmed from the outside, and a processing situation can be grasped easily.
[0037]
1, 2, 4, and the like show the state of a small amount of processing with the adjustment container 51 attached, but when the processing amount is large, the adjustment container 51 is removed and the raw material is subjected to granulation coating. That is, the fluidized bed granulation coating apparatus 1 is not dedicated to a small amount of processing, but has a configuration in which the amount charged can be changed as appropriate by attaching and detaching the adjustment container 51. Moreover, the capacity | capacitance of the adjustment container 51 can be changed suitably according to the preparation amount, and several kinds of adjustment containers 51 may be prepared beforehand and it may be suitably selected according to the preparation amount.
[0038]
A lower air supply unit 30 is provided below the intermediate housing unit 20. 7A is a plan view of the lower air supply unit 30, and FIG. 7B is a cross-sectional view thereof. The lower air supply unit 30 is provided with a plurality of air supply ST31 as shown in FIGS. Each supply air ST31 is provided corresponding to each function ST13 of the upper processing unit 10. That is, here, air supply ST31 is provided corresponding to all the stations of charging / discharging ST13a, preheating mixing ST13b, granulating coatings ST13c to 13e, and drying ST13f.
[0039]
Supply air ST31 is formed in the same straight cylinder shape, respectively. The upper cylinder end side of the supply air ST31 is opened as it is with a diameter matched to the lower connection port 23b of the container 22, and an upper connection port 35 is formed. The upper connection port 35 is formed in the disk 37 as shown in FIG. The lower cylinder end side of the air supply ST31 is closed, and an air supply connecting pipe 36a communicating with the inside of the cylinder is provided from the side. That is, the air supply ST31 has a configuration in which an upper connection port 35 opened to the disk 37 is used as an open end, a straight cylinder is formed as it is, a cylinder end is closed, and an air supply connecting pipe 36a is provided on the side. ing. The supply connection pipe 36a communicates with the chamber 32 via the flexible tube 36b.
[0040]
Each supply air ST31 communicates with a common chamber 32. The chamber 32 is formed in a ring shape, so that air can be supplied to the air supply ST31 evenly as compared with a case where the chamber 32 is simply formed in a box shape. An air supply pipe 33 is connected to the chamber 32 and is connected to an external air supply source (not shown) via an air supply port 33a. Thus, compressed air is supplied from the external air supply source to the air supply ST31 through the air supply pipe 33 and the chamber 32.
[0041]
As shown in FIG. 7, the lower end side of the two air supply ST31 in the opposing position among the air supply ST31 is supported by a cylinder 38 that can be moved up and down. That is, the lower air supply unit 30 can be lowered by the cylinder 38. As will be described later, the lower air supply unit 30 is lowered when the intermediate storage unit 20 is rotated, and is separated from the intermediate storage unit 20.
[0042]
Next, a method for granulating and coating a granular material using the fluidized bed granulation coating apparatus 1 having such a configuration will be described. Here, in order from the charging / discharging process (stage 0), the six processes from the preheating mixing process (stage 1), the spraying process (stages 2 to 4), and the drying process (stage 5) are performed by rotating the container 22. Then, granule coating treatment of the granular material is performed.
[0043]
In the charging / discharging ST 13 a, the raw material is charged into the container 22 and the “charging / discharging process (charging)” of stage 0 is performed. Subsequently, the “preheating mixing process” of stage 1 is performed in preheating mixing ST13b, and then the “spraying processes” of stages 2 to 4 are performed in granulated coatings ST13c to 13e. Finally, after the stage 5 “drying process” is performed in the drying ST 13 f, the process returns to the input / discharge ST 13 a, the product is discharged from the container 22, and the stage 0 “input / discharge process (discharge)” is performed. In the fluidized bed granulation coating apparatus 1, the container 22 starts rotating every 5 minutes, and each stage is carried out for 5 minutes, but the time can be appropriately changed.
[0044]
Therefore, as stage 0, raw materials are charged. At this time, first, the cylinder 38 is driven up, and the connection ports of the functions ST13 of the upper processing unit 10, the containers 22 of the intermediate storage unit 20, and the air supply ST31 of the lower air supply unit 30 are combined. Put it in a state. That is, the lower connection port 13g of each function ST31 and the upper connection port 23a of the container 22, and the lower connection port 23b of the container 22 and the upper connection port 35 of the air supply ST31 are connected to each other. At this time, an anti-blur pin 27 is attached to the lower portion of the motor 26 so that the central axis of the intermediate housing portion 20 does not shake.
[0045]
In this state, the raw material granular material is supplied into the charging / discharging ST 13a through the raw material supply pipe. In the charging / discharging ST 13a, the lower connection port 13g is connected to the upper connection port 23a of the container 22 while being opened. For this reason, the raw material supplied from the raw material supply pipe 14 to the input / discharge ST 13 a is accommodated in the container 22 as it is. Since the countersink 23c is disposed in the lower opening of the container 22, the raw material is accommodated in the container 22 without falling.
[0046]
After a predetermined amount of raw material is supplied into the container 22, the cylinder 38 is driven downward to lower the lower air supply unit 30. As a result, a gap is generated between the lower air supply unit 30 and the intermediate housing unit 20. In addition, the rotary shaft 25 configured to be movable up and down is lowered to separate the intermediate storage unit 20 from the upper processing unit 10. FIG. 8 is a cross-sectional view showing a rotation state of the intermediate accommodating portion 20 of the fluidized bed granulation coating apparatus 1. As shown in FIG. 8, by adjusting the lowering of the rotary shaft 25 and the cylinder 38, gaps are formed between the upper processing unit 10, the intermediate storage unit 20, and the lower air supply unit 30, and the intermediate storage unit 20 rotates. It becomes possible.
[0047]
In this state, the rotating shaft 25 is rotated by the motor 26 to advance each container 22 to the adjacent function ST13, and the stage 1 is shifted to. In the fluidized bed granulation coating apparatus 1, since the function ST13 is six, the rotation angle is 60 degrees. By the rotational movement of the container 22, the container 22 containing the granular material in the input / discharge ST13a proceeds to the next preheating mixing ST13b. Since the container 22 is provided corresponding to each function ST13, when one container 22 proceeds to the adjacent function ST13, the other containers 22 also proceed to the adjacent function ST13.
[0048]
In preheating mixing ST13b, the “preheating mixing step” of stage 1 is performed. When the container 22 is moved to the preheat mixing ST13b, the lower connection port 13g of the function ST13 and the upper connection port 23a of the container 22, and the lower connection port 23b of the container 22 and the upper connection port 35 of the air supply ST31 are aligned. In this state, the rotary shaft 25 and the cylinder 38 are raised. Thereby, the lower connection port 13g of the function ST13, the upper connection port 23a of the container 22, the lower connection port 23b of the container 22, and the upper connection port 35 of the air supply ST31 are in close contact with each other and are closely connected. At this time, also in the function ST13 other than the preheating mixing ST13b, the connection ports of the function ST13, the container 22 and the air supply ST31 are closely connected.
[0049]
Air is supplied from the supply air ST31 to the container 22 advanced to the preheating mixing ST13b. The air flows into the adjustment container 51 through the eye plate 23c and the eye plate 61, whereby the granular material in the adjustment container 51 is in a fluidized bed state. This fluidized bed state can be viewed through the viewing window 62. The supply air from the supply air ST31 is warmed to about 80 ° C., whereby the raw material is preheated. When a plurality of types of raw materials are added, they are mixed while being preheated here. On the other hand, during the preheating mixing, the raw material granular material is supplied to the empty container 22 that has been turned to the input / discharge ST13a in the same manner as described above.
[0050]
After the preheating mixing in the preheating mixing ST13b is completed, the container 22 is rotated in the same manner as described above to advance to the adjacent granulated coating ST13c, and the stage 2 is shifted to. In granulation coating ST13c-13e, the 1st-3rd spray process of the stages 2-4 is implemented. Air is supplied from the air supply ST31 to the container 22 advanced to the granulation coating ST13c, and the granular material in the adjustment container 51 is in a fluidized bed state. While maintaining the fluidized bed state, an appropriate spray solution is sprayed for a predetermined time from the spray gun 16b provided on the granulated coating ST13c. At this time, since the fluidized bed is formed in the adjustment container 51, the distance between the spray gun 16b and the fluidized bed is set small, and an appropriate spray distance is secured even with a small amount of raw material.
[0051]
While the first spraying process is being performed in the granulated coating ST13c, in the immediately preceding preheating mixing ST13b, the granular material is newly preheated and mixed. In addition, the raw material granular material is supplied to the empty container 22 that has been turned to the input / discharge ST13a during the same period as described above.
[0052]
After the first spraying step in the granulating coating ST13c is completed, the container 22 is rotated in the same manner as described above to advance to the adjacent granulating coating ST13d, and the stage 3 is shifted to perform the second spraying step. While the second spray process is performed in the granulated coating ST13d, the first spray process is newly performed in the immediately preceding granulated coating ST13c. In addition, in the preheating mixing ST13b before that, the granular material is newly preheated and the raw material is supplied into the empty container 22 in the charging / discharging ST13a.
[0053]
After completing the granulation process in the granulation coating ST13d, the container 22 is rotated to advance to the adjacent granulation coating ST13e, and the stage 4 is performed to perform the third spray process. While the third spray process is performed in the granulated coating ST13e, the second spray process is performed in the previous granulated coating ST13d, and the first spray process is performed in the previous granulated coating ST13c. Further, in the preheating mixing ST13b before that, the granular material is newly preheated and the raw material is supplied into the empty container 22 in the charging / discharging ST13a.
[0054]
After finishing the granulation process in the granulation coating ST13e, the container 22 is further rotated to proceed to the next drying ST13f, and the process proceeds to the stage 5 to perform the drying process. In the drying ST13f, the granular material that has finished the third spray process is dried with the air supplied from the lower air supply ST31. While this drying process is being performed in the drying ST13f, the third spray process is performed in the granulated coating ST13e, the second spray process is performed in the granulated coating ST13d, and the first spray process is performed in the granulated coating ST13c. Has been done. Furthermore, in the preheating mixing ST13b before that, the granular material is preheated and the raw material is supplied into the empty container 22 in the charging / discharging ST13a.
[0055]
In this way, the granular material that has been granulated and coated through the first to third spray steps in each of the stations of granulated coating ST13c, 13d, and 13e is dried in drying ST13f to become a product. After the drying process is completed, the container 22 is rotated to advance to the input / discharge ST13a, and the process returns to the stage 0 to discharge the product. In other words, the raw material input in the input / discharge ST13a goes through the functions ST13 and is commercialized and returns to the input / discharge ST13a again.
[0056]
When the container 22 that has finished the drying process arrives at the input / discharge ST13a, the suction / discharge device 42 operates to suck and discharge the product. Here, a suction blower (not shown) is first activated to generate a suction airflow at the air inlet 43 via the product transport pipe 19 and the flexible tube 47. At the same time, the air cylinder 48 is also operated, and the intake port 43 is lowered and moved from the retracted position to the lowest position set about 15 mm above the countersink 23c.
[0057]
The air inlet 43 reaches the lowest position while sucking the product and untreated powder particles in the container 22. The intake port 43 that has reached the lowest position is held for 10 seconds as it is, and then raised for 2 seconds. The intake port 43 moves up to the ascending inversion position at a position of about 200 mm above the lowest limit position, then reverses, and descends toward the lowest limit position. The air inlet 43 reaches the lowest position in 3 seconds and is held there again for 7 seconds. That is, the intake port 43 moves up and down for 5 seconds (2 seconds up, 3 seconds down) and is held at the lowest limit position for 7 seconds. The air inlet 43 is raised again after being held at the lowest limit position for 7 seconds, and the air inlet 43 repeats such vertical movement at the bottom of the container 22 a plurality of times. The product sucked and discharged from the container 22 is pneumatically transported to a product storage tank or the like through the product transport pipe 19.
[0058]
After the entire amount of the product is reliably discharged from the container 22 as described above, the raw material is charged again into the container 22. The raw material is charged into the container 22 for 2 minutes 30 seconds after the discharge process is completed. While the product in the container 22 is discharged in the product discharge ST13a and a new raw material is charged, in the immediately preceding drying ST13f, the granular material that has finished the third spraying process is dried. The third spray process is performed in the granulated coating ST13e before the drying ST13f, the second spray process is performed in the granulated coating ST13d, and the first spray process is performed in the granulated coating ST13c. Furthermore, in the preheating mixing ST13b before that, the preheating mixing of the granular material is newly performed.
[0059]
When the product discharge and the raw material input in the product discharge ST13a are completed, the container 22 is rotated again and a new processing process is started. That is, the container 22 in the product discharge ST13a moves to the preheating mixing ST13b, and the container 22 newly moves from the drying ST13f to the product discharge ST13a. Then, the same processing as described above is repeated, and the required amount of granulated coating can be performed by rotating the intermediate accommodating portion 20 a required number of times. In this way, by sequentially circulating the function ST13 through the container 22 containing the granular material, it is possible to incorporate a batch type element and a continuous type element, and to have the advantages of both types. Therefore, according to the fluidized bed granulation coating apparatus 1 as shown in FIG. 1, it is possible to secure mass productivity in a continuous system while ensuring uniformity of particle diameter.
[0060]
It goes without saying that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
For example, in the above-described embodiment, the case where six functions ST13 are provided has been described. However, the number of functions ST13 may be arbitrarily set as necessary, and may be more or less than six. Moreover, although the case where raw material injection | emission and product discharge | emission are performed in one station was shown, you may perform them in a separate station. Furthermore, although it was set as the structure which provides the granulation coating ST in three places, you may make it provide the granulation coating ST in two places and two dry ST. That is, the process allocation to the plurality of function stations can be freely performed. For example, one input / discharge ST, two granulated coatings ST, two dry STs, and one powder container storage container cleaning ST may be set, or all may be set to dry STs. Is possible.
[0061]
In the above-described embodiment, the case where the present invention is applied to an apparatus for performing the granulation coating process by rotating and circulating the container 22 has been described. However, the function ST13 and the air supply ST31 are linearly arranged, and the container 22 It is also possible to apply the present invention to a granulating and coating apparatus that moves the film linearly. The present invention can also be applied to a conventional granular material processing apparatus as shown in FIG. 11 in which the container 22 is not circulated. For example, in the fluidized bed granulation coating apparatus 71 of FIG. It is also possible to attach 51 to cope with a change in the charged amount.
[0062]
Furthermore, in the above-described embodiment, the configuration in which the adjustment container 51 is attached in the raw material container portion 22b is shown, but as an alternative, a method of exchanging the entire container 22 can also be adopted. 9 and 10 are explanatory diagrams showing alternatives for handling a small amount of processing. The thing of FIG. 9 becomes a structure which divided the raw material container part 22b into 2 parts, and was attached below the straight cylinder part 22a. Here, the raw material container part 22b is divided into an upper part 63a and a lower part 63b, and a countersink plate is attached between them. However, in the case of this configuration, since the dividing portion comes to the position of the viewing window, the size of the viewing window is limited, and the state of the internal granular material is somewhat difficult to confirm.
[0063]
9 has a configuration in which a raw material container 64 dedicated to a small amount of processing is manufactured and attached in a form that is raised by a connecting pipe 65. The raw material container 64 is provided with a viewing window 66 so that the state of the internal powder particles can be confirmed. However, in the case of this configuration, the number of parts increases, so the work becomes complicated and the number of work steps increases. Further, since the heavy raw material container 64 is placed on the thin connecting pipe 65, there is a possibility that the balance of the container may be lost due to vertical movement or rotational movement when the raw material container 64 or the like is set or when the container is moved.
[0064]
【The invention's effect】
According to the granular material processing apparatus of the present invention, a powder comprising a raw material container that contains the granular material, a spray casing that is installed above the raw material container, and a filter casing that is installed above the spray casing. Since a small-capacity adjustment container is detachably installed in the raw material container of the granule processing device, by using this adjustment container to charge the raw material in a small amount of processing, there is no significant modification of the device. Thus, it is possible to cope with a change in the charged amount at a low cost by a simple operation while maintaining appropriate processing conditions.
[0065]
In addition, according to another granular material processing apparatus of the present invention, a small-capacity adjustment container is detachably provided in the raw material container of the granular material processing apparatus having a plurality of functional stations and storage containers. Therefore, when processing a small amount, using this adjustment container, the raw material is charged into the container, so that the appropriate processing conditions can be maintained and the charged amount can be reduced at a low cost with no significant modifications to the equipment. It becomes possible to cope with the change.
[0066]
Furthermore, the adjustment container is made of a transparent material, and the adjustment container is attached to the observation window provided in the raw material container, so that the inside of the adjustment container can be visually confirmed from the inspection window. It becomes possible to easily confirm the state of the granular material from the outside.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an apparatus main body of a fluidized bed granulation coating apparatus according to an embodiment of the present invention, with a part thereof cut away.
2 is a cross-sectional view showing a state of the fluidized bed granulation coating apparatus of FIG.
3A is a plan view of an upper processing section of the fluidized bed granulation coating apparatus of FIG. 1, and FIG. 3B is a cross-sectional view thereof.
4A is a plan view of an intermediate accommodating portion of the fluidized bed granulation coating apparatus of FIG. 1, and FIG. 4B is a cross-sectional view thereof.
FIG. 5 is a cross-sectional view of a raw material container.
FIG. 6 is a perspective view of an adjustment container.
7A is a plan view of a lower air supply unit of the fluidized bed granulation coating apparatus of FIG. 1, and FIG. 7B is a cross-sectional view thereof.
FIG. 8 is a cross-sectional view showing a rotation state of an intermediate accommodating portion of a fluidized bed granulation coating apparatus.
FIG. 9 is an explanatory diagram showing an alternative for handling a small amount of processing.
FIG. 10 is an explanatory diagram showing another alternative for handling a small amount of processing.
FIG. 11 is an explanatory diagram showing a configuration of a general fluidized bed granulation coating apparatus.
[Explanation of symbols]
1 Fluidized bed granulation coating equipment (powder processing equipment)
DESCRIPTION OF SYMBOLS 10 Upper process part 11 Support | pillar 12 Chamber 13 Function station 13a Input / discharge station 13b Preheating mixing station 13c Granulation coating station 13d Granulation coating station 13e Granulation coating station 13f Drying station 13g Lower connection port 14 Raw material supply pipes 15a to 15f Exhaust Connecting pipe 16a Bag filter 16b Spray gun 16c Pulse jet nozzle 17 Damper 18 Exhaust pipe 19 Product transport pipe 20 Intermediate container 21 Rotating center 22 Powder container 22a Straight cylinder 22b Raw material container (raw material container)
23a Upper connection port 23b Lower connection port 23c Eye plate 24a Turntable 24b Turntable 25 Rotating shaft 26 Motor 27 Anti-blur pin 30 Lower air supply part 32 Chamber 33 Air supply piping 33a Air supply port 35 Upper connection port 36a For air supply Connecting pipe 36b Flexible tube 37 Disk 38 Cylinder 41 Suction blower 42 Suction discharge device 43 Air inlet 47 Flexible tube 48 Air cylinder 49 Piston rod 51 Adjustment container 52 Tapered part 53 Flange 54 Bolt 55 Ring plate 56 Mounting part 57 O-ring 58 Opening 59 Hole 61 Eyeplate plate 62 Viewing window 63a Upper part 63b Lower part 64 Raw material container 65 Connection pipe 66 Viewing window 71 Fluidized bed granulation coating device 72 Granule processing part 73 Air supply part 74 Control part 75 Raw material container 76 Spray casing 77 Filter casing 7 8 frame

Claims (5)

A granular material processing apparatus comprising: a raw material container that contains granular material; a spray casing that is installed above the raw material container; and a filter casing that is installed above the spray casing,
An apparatus for treating a granular material, comprising an adjustment container that is detachably provided in the raw material container and is smaller in capacity than the raw material container. An upper processing unit having a plurality of functional stations having functions of respective steps constituting a fluidized bed granulation coating process, a storage container disposed below the upper processing unit, and containing a granular material, and the storage container An intermediate storage unit that includes a moving unit that sequentially moves the functional stations, and a lower air supply unit that is disposed below the intermediate storage unit and includes an air supply station that supplies air into the granular material storage container; A granular material processing apparatus comprising:
The storage container includes a cylindrical straight tube portion, a truncated cone-shaped raw material container, and an adjustment container that is detachably provided in the raw material container and has a smaller capacity than the raw material container. Powder processing equipment.   The granular material processing apparatus according to claim 1, wherein the adjustment container includes a truncated cone-shaped tapered portion, a flange formed integrally with the tapered portion at a small-diameter side end of the tapered portion, and the flange. And a ring plate attached between the flange plate and the ring plate, and a granular material processing apparatus.   The granular material processing apparatus of any one of Claims 1-3 WHEREIN: The said adjustment container is formed with a transparent raw material, The granular material processing apparatus characterized by the above-mentioned.   The granular material processing apparatus of Claim 4 WHEREIN: The said raw material container has an observation window which can visually recognize the inside, and the said adjustment container is attached facing the said observation window, The granular material processing apparatus characterized by the above-mentioned. .

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