JP2016007567A - Seal device of granule treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal device easy in the removing-fitting operations of the hollow elastic seal in a seal part and the cleaning and cleaning confirmation operations of the seal part.SOLUTION: Provided is a seal device 8 comprising: a hollow elastic seal 8A1 mounted at the outer circumferential part of a filter support member 3b; and a compressive air feed part 8B mounted at the outer circumferential part of the wall part 1a of a fluidized bed container 1 and feeding compressed air to the hollow part of the hollow elastic seal 8A1 of the seal part 8A. When an air feed member 8B1 is moved forward by an operation part 8B2, and, in a state of being connected with a connection member 8A3, compressed air is fed to an air feed passage 8B11, the compressed air flows into the hollow elastic seal 8A1, and the hollow elastic seal 8A1 expands. When the air feed member moves backward and is separated from the connection member 8A3, the compressed air in the hollow elastic seal 8A1 is exhausted, and the hollow elastic seal 8A1 is compressed.

Description

  The present invention relates to a sealing device provided in a powder processing apparatus for performing processing such as granulation, coating, mixing, stirring, and drying of powder in various fields such as pharmaceutical production, food production, and agricultural chemical production. The granular material processing apparatus targeted by the present invention includes a fluidized bed apparatus equipped with a fluidized bed container for forming a fluidized bed by suspending and flowing the granular material, and a ventilation type driven to rotate around an axis. A coating apparatus equipped with a rotating drum is included.

  For example, in a fluidized bed apparatus, generally, a gas (fluidized gas) introduced from the bottom of a fluidized bed container is used to granulate, coat, Drying is performed. This type of fluidized bed apparatus includes those accompanied by rolling, jetting, stirring, and the like of powder particles (referred to as a combined fluidized bed apparatus). There are a rolling fluidized bed apparatus in which a rotating body is disposed at the bottom of a bed container, and a Wurster fluidized bed apparatus in which a draft tube (inner tower) is installed inside the fluidized bed container.

  In this type of fluidized bed apparatus, a solid-gas separation filter is disposed above the processing chamber of the fluidized bed container. For example, in the fluidized bed apparatus of Patent Document 1, a filter is supported by a filter support member that forms a ceiling portion of a processing chamber of a fluidized bed container. The filter support member can be moved up and down by an elevating mechanism, and when the fluidized bed container is cleaned (including filter cleaning) or when the filter is replaced, the filter support member is moved down with the filter. Do. As shown in FIG. 3 of the same document, a gap between the outer peripheral portion of the filter support member and the inner peripheral portion of the fluidized bed container is sealed by a seal portion mainly composed of a hollow elastic body seal called an expansion seal. . The hollow elastic body seal of the seal portion is attached to the inner periphery of the fluidized bed container, and a compressed air supply pipe is connected to the hollow elastic body seal (the supply pipe is not shown). When compressed air is supplied from an external compressed air source to the hollow portion of the hollow elastic body seal through the supply pipe, the hollow elastic body seal expands and the outer peripheral portion of the filter support member and the inner peripheral portion of the fluidized bed container And press. Accordingly, the gap between the outer peripheral portion of the filter support member and the inner peripheral portion of the fluidized bed container is sealed, and the filter support member is fixed at a predetermined position in the fluidized bed container. During the operation of the fluidized bed apparatus, the supply of compressed air to the hollow elastic body seal is continued to maintain this state. When the filter support member is lowered, the compressed air in the hollow elastic body seal is discharged, the hollow elastic body seal is contracted, and the pressure contact state is released. Thereby, the filter support member can be moved up and down with respect to the fluidized bed container.

JP 2007-307448 A

  As described above, the hollow elastic body seal of the seal portion is mounted not on the moving side filter support member but on the stationary side fluidized bed container. This is because it is necessary to connect a supply pipe for supplying compressed air to the hollow elastic body seal. Further, since the hollow elastic body seal is attached to the fluidized bed container on the fixed side, the hollow elastic body seal can be positioned in the fluidized bed container even when the filter support member is lowered during cleaning of the fluidized bed container. It will remain attached to the location. On the other hand, in order to effectively prevent contamination, it is necessary to remove the hollow elastic body seal from the seal portion and clean the hollow elastic body seal and the seal portion (where the hollow elastic body seal is attached). As described above, since the hollow elastic body seal is mounted at a high position in the fluidized bed container, it takes time to remove the hollow elastic body seal and to attach it after cleaning. Moreover, it takes time and effort to clean the sealing portion after removing the hollow elastic body seal and to confirm the cleaning.

  An object of the present invention is to provide a sealing device that facilitates removal / attachment work of a hollow elastic body seal of a seal part and cleaning and cleaning confirmation work of the seal part.

  In order to solve the above-described problem, a sealing device that seals between a stationary member of a granular material processing device and a movable member that is movable with respect to the stationary member, which is attached to the movable member. A compressed air supply comprising: a seal portion having a hollow elastic body seal; and a compressed air supply portion that is attached to the fixed-side member and supplies compressed air to a hollow portion of the hollow elastic body seal of the seal portion. The portion includes an air supply passage that communicates with a compressed air source, a connection portion that is displaceable in the advancing / retreating direction with respect to the seal portion, and an operating portion that displaces the connecting portion in the advancing / retreating direction. In a state where the connecting portion is displaced in the forward direction and connected to the seal portion, compressed air from the compressed air source is supplied to the hollow elastic body seal of the seal portion via the air supply passage, The elastic seal expands The hollow elastic body seal is formed by pressing the moving side member and the fixed side member and sealing between them, and the operating portion displaces the connecting portion in the backward direction and moves away from the sealing portion. The compression device is discharged, the hollow elastic body seal contracts, and the pressure contact state is released.

  In the above configuration, the moving side member is fixed to the fixed side member by the pressure contact of the hollow elastic body seal, and the pressure contact state of the hollow elastic body seal is released, whereby the moving side member is fixed. It can be set as the structure which becomes movable with respect to a side member.

  The said structure WHEREIN: The said connection part can be comprised with the air supply member which has the said air supply path.

  In the above configuration, the connecting portion is configured by a second hollow elastic body seal, and the operating portion supplies / discharges compressed air to / from the second hollow elastic body seal, and supplies / discharges compressed air. The second hollow elastic body seal can be displaced in the forward / backward direction by expansion / contraction of the second hollow elastic body seal.

  For example, the granular material processing apparatus is a fluidized bed apparatus, the fixed side member is a fluidized bed container, and the moving side member constitutes a ceiling portion of the processing chamber of the fluidized bed container and is separated into a solid and gas. It is a filter support member which supports the filter for use.

  In the above configuration, a third hollow elastic body seal is attached to the filter support member, and compressed air is passed through the air supply passage and the seal portion in a state where the connection portion is connected to the seal portion. The third hollow elastic body seal is also supplied, the third hollow elastic body seal expands, and presses against the filter and the filter support member to seal between them, and the filter is attached to the filter. When the connection member is fixed to the support member and the connecting portion is separated from the seal portion, the air in the third hollow elastic body seal is also discharged, and the third hollow elastic body seal contracts, and the filter Can be removed from the filter support member.

  Alternatively, in the above configuration, a third hollow elastic body seal is attached to the filter support member, and a second air supply passage communicating with a compressed air source is provided in the compressed air supply unit. With the connecting portion connected to the seal portion, compressed air is also supplied to the third hollow elastic body seal through the second air supply pipe portion and the seal portion, and the third hollow elastic body. When the seal expands and presses against the filter and the filter support member to seal between them, the filter is fixed to the filter support member, and the connecting portion is separated from the seal portion. The air in the third hollow elastic body seal is also discharged, the third hollow elastic body seal contracts, and the filter becomes removable from the filter support member. It can be configured.

  ADVANTAGE OF THE INVENTION According to this invention, the sealing device of the granular material processing apparatus with which the removal and attachment operation | work of the hollow elastic body seal | sticker of a seal | sticker part, and the washing | cleaning and washing | cleaning confirmation operation | work of a seal part can be provided easily.

It is a figure which shows typically the flow apparatus which concerns on embodiment. It is sectional drawing which shows the sealing device which concerns on 1st Embodiment. It is sectional drawing which shows the sealing device which concerns on 2nd Embodiment. It is sectional drawing which shows the sealing device which concerns on 3rd Embodiment. It is sectional drawing which shows the sealing device which concerns on 4th Embodiment. It is sectional drawing which shows the sealing device which concerns on 5th Embodiment. It is sectional drawing which shows the sealing device which concerns on 6th Embodiment. It is sectional drawing which shows the sealing device which concerns on 7th Embodiment. It is sectional drawing which shows the sealing device which concerns on 8th Embodiment. It is the figure which looked at the filter part concerning an 8th embodiment from the upper part. It is sectional drawing which shows the sealing device which concerns on 9th Embodiment. It is sectional drawing which shows the sealing device which concerns on 10th Embodiment.

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

  FIG. 1 schematically shows a configuration example of a fluidized bed apparatus according to this embodiment.

  The fluidized bed container 1 includes a processing chamber 2 for processing the granular material M, for example, granulation or coating of the granular material M, a filter unit 3 disposed above the processing chamber 2, and an upper side of the filter unit 3. And an exhaust chamber 4 provided.

  At the bottom of the processing chamber 2, a gas dispersion plate 2 a made up of a perforated plate (or metal mesh) such as punching metal is disposed. The gas A such as hot air supplied from the air supply duct 5 to the air supply chamber 6 is introduced into the fluidized bed container 1 through the gas dispersion plate 2a. In addition, a spray nozzle 7 for spraying a spray liquid (film agent liquid, binder liquid, etc.) is installed in the upper part of the processing chamber 2.

  In this embodiment, the filter unit 3 includes a plurality of cartridge-type filters 3a for solid-gas separation, and a filter support member 3b that supports the filter 3a. The filter support member 3 b constitutes a ceiling portion of the processing chamber 2 and partitions the processing chamber 2 and the exhaust chamber 4. Each filter 3a is detachably attached to the mounting hole portion of the filter support member 3b by appropriate means.

  The space between the outer periphery of the filter support member 3b and the inner periphery of the wall 1a of the fluidized bed container 1 is sealed by a sealing device 8 described later. Further, the filter support member 3 b is connected to an elevating drive means, for example, a cylinder rod 9 a of an elevating cylinder (air cylinder) 9, and can be moved up and down in the fluidized bed container 1 by the operation of the elevating cylinder 9.

  The granular material M accommodated in the processing chamber 2 of the fluidized bed container 1 is floated and flowed by the gas A introduced into the fluidized bed container 1 through the gas dispersion plate 2a. Then, spray liquid (film agent liquid, binder liquid, etc.) is sprayed from the spray nozzle 7 toward the fluidized bed of the granular material M. At the same time that the granular material particles M are wetted by the spray liquid sprayed from the spray nozzle 7, for example, a mist of the film agent liquid, the solid components contained in the film agent liquid adhere to the surface of the granular particle M, After drying and solidifying, a coating layer is formed on the surface of the powder particles M (coating). Alternatively, the powder particles M are wet, adhered and agglomerated by a spray liquid sprayed from the spray nozzle 7, for example, a mist of a binder liquid, and dried to grow into particles having a predetermined diameter (granulation).

  The gas A in which the powder M is suspended and flowed rises in the processing chamber 2, is solid-gas separated by each filter 3 a of the filter unit 3, and flows into the exhaust chamber 4. Then, the gas is exhausted to the outside of the fluidized bed container 1 through an exhaust duct (not shown) connected to the exhaust chamber 4.

  FIG. 2 is an enlarged view of a peripheral portion (X portion in FIG. 1) of the sealing device 8 according to the first embodiment. In this embodiment, the sealing device 8 is attached to the outer periphery of the filter support member 3b, and includes a sealing portion 8A having a hollow elastic body seal 8A1 formed of an elastic material such as rubber or resin, and the wall of the fluidized bed container 1. And a compressed air supply unit 8B for supplying compressed air to the hollow part of the hollow elastic body seal 8A1 of the seal part 8A.

  In the seal portion 8A, the hollow elastic body seal 8A1 has a ring shape and is attached to a recess provided along the outer periphery of the filter support member 3b, for example, a recess 3b1 having a U-shaped cross section. An air supply port 8A2 is connected to one place (or a plurality of locations) in the circumferential direction of the hollow elastic body seal 8A1, and a connection member 8A3 is connected to the air supply port 8A2. The connecting member 8A3 has an air passage 8A4. One end of the air passage 8A4 is connected to the air supply port 8A2, and the other end opens at the end face of the connecting member 8A3. Further, a sealing member, for example, an O-ring 8A5 is attached to the end surface of the connection member 8A3 so as to cover the opening of the air passage 8A4 from the outer peripheral side.

  The compressed air supply part 8B is a connecting part that can be displaced (moved) in the advancing / retreating direction with respect to the seal part 8A. In this embodiment, the air supply member 8B1 and the operating part for displacing (moving) the air supply member 8B1 in the advancing / retreating direction. 8B2.

  In this embodiment, the air supply member 8B1 includes an air supply pipe 8B12 having an air supply passage 8B11, and a movable connection member 8B13 attached to the tip of the air supply pipe 8B12. The air supply pipe 8B12 is connected to a compressed air source (not shown) through the air pipe 8B14.

  In this embodiment, the actuating portion 8B2 has an air-driven actuator, for example, a double-acting air cylinder mechanism using the air supply pipe 8B12 as a cylinder rod. This air cylinder mechanism is provided on the outer periphery of the center portion of the cylindrical housing 8B21, the air supply pipe 8B12 (and connection member 8B13) inserted through the housing 8B21 so as to be movable forward and backward, and the air supply pipe 8B12. The piston 8B15 is configured to be slidable on the inner periphery, and the air chambers 8B22 and 8B23 inside the housing 8B21 partitioned by the piston 8B15. The air chambers 8B22 and 8B23 are connected to a compressed air source (not shown) via air pipes 8B24 and 8B25, respectively.

  FIG. 2 shows a state in which the air supply member 8B1 (the air supply pipe 8B12 and the connection member 8B13) is retracted with respect to the seal portion 8A. In this state, there is a predetermined interval between the end surface of the connection member 8B13 and the end surface of the connection member 8A3, and the hollow elastic body seal 8A1 contracts (state shown by a solid line in the figure), and the fluidized bed container 1 is separated from the inner peripheral portion (the inner peripheral surface of the wall portion 1a). Thus, the seal portion 8A is separated from the compressed air supply portion 8B and the inner peripheral portion of the fluidized bed container 1, and the filter support member 3b can be moved up and down in the fluidized bed container 1.

  When compressed air is supplied to the air chamber 8B23 of the housing 8B21 via the air pipe 8B25 and the air chamber 8B22 is communicated to the exhaust side via the air pipe 8B24, the air supply member 8B1 is moved from the position shown in FIG. The end face of the connection member 8B13 comes into contact with the end face of the connection member 8A3 via the O-ring 8A5. As a result, the air supply passage 8B11 of the air supply pipe 8B12 is connected to the air passage 8A4 of the connection member 8A3. In this state, when compressed air is supplied to the air supply passage 8B11 of the air supply pipe 8B12 via the air pipe 8B14, the compressed air passes through the air passage 8A4 of the connecting member 8A3 and the air supply port 8A2 from the air supply passage 8B11. Into the hollow portion of the hollow elastic body seal 8A1. As a result, as shown by the one-dot chain line in FIG. 2, the hollow elastic body seal 8A1 expands and presses the outer peripheral portion of the filter support member 3b and the inner peripheral portion of the fluidized bed container 1 (the inner peripheral surface of the wall portion 1a). To do. The hollow elastic body seal 8A1 is pressed against the outer peripheral portion of the filter support member 3b and the inner peripheral portion of the fluidized bed container 1 to seal between the two, and the filter support member 3b is disposed inside the fluidized bed container 1. Fixed to the periphery. This state continues during operation of the fluidized bed apparatus.

  From the above state, supply of compressed air to the air supply passage 8B11 of the air supply pipe 8B12 is stopped, supply / discharge of compressed air to the air pipes 8B24 and 8B25 is switched, and the air pipe 8B24 is connected to the air chamber 8B22 of the housing 8B21. When the compressed air is supplied through the air chamber 8B23 to the exhaust side via the air pipe 8B24, the air supply member 8B1 moves backward with respect to the seal portion 8A and returns to the state shown in FIG. 8B13 leaves | separates from connection member 8A3. As a result, the compressed air in the hollow portion of the hollow elastic body seal 8A1 is discharged from the opening of the air passage 8A4 through the air supply port 8A2 and the air passage 8A4, and the hollow elastic body seal 8A1 contracts (indicated by a solid line in the figure). The seal portion 8A is separated from the compressed air supply portion 8B and the inner peripheral portion of the fluidized bed container 1, and the filter support member 3b can be moved up and down in the fluidized bed container 1. Then, when the lifting / lowering cylinder 9 is operated to lower the filter support member 3b to an appropriate position when the fluidized bed container 1 is cleaned, the seal portion 8A is also lowered together with the filter support member 3b. It is possible to easily remove and attach the hollow elastic body seal 8A1 to 8A. Therefore, the cleaning and cleaning confirmation of the hollow elastic body seal 8A1 are facilitated, and the cleaning and cleaning confirmation of the seal portion 8A after the hollow elastic body seal 8A1 is removed are facilitated.

  FIG. 3 shows a sealing device 81 according to the second embodiment. The seal device 81 according to this embodiment is substantially different from the seal device 8 according to the first embodiment described above in that an O-ring 8B16 is attached to the end surface of the movable connection member 8B13. Since other matters are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 4 shows a sealing device 82 according to the third embodiment. The sealing device 82 according to this embodiment is substantially different from the sealing device 8 according to the first embodiment described above in that the air supply port 8A2 of the hollow elastic body seal 8A1 and the air passage 8A4 of the connecting member 8A3 are provided. , Joints such as one-touch joints 8A9, 8A6 and air pipes 8A7. Since other matters are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 5 shows a sealing device 83 according to the fourth embodiment. The sealing device 83 according to this embodiment is substantially different from the sealing device 8 according to the first embodiment described above in that the air supply member 8B1 is configured by the air supply pipe 8B12, and the movable side connection member 8B13 is provided. While omitted, the tip of the air supply pipe 8B12 is inserted into a connection hole 8A8 provided on the end surface of the connection member 8A3 and connected. An O-ring is attached to the inner periphery of the connection hole 8A8. Since other matters are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 6 shows a sealing device 84 according to the fifth embodiment. The seal device 84 according to this embodiment is substantially different from the seal device 8 according to the first embodiment described above in that the air supply member 8B1 is configured by an L-shaped tube member 8B18 having an air supply passage 8B17. In addition, a double-acting or single-acting (spring return system) air cylinder 8B26 is connected to the pipe member 8B18 to constitute the operating portion 8B2. In this embodiment, the end surface of the pipe member 8B18 contacts the end surface of the connection member 8A3 via the O-ring 8A5. Since other matters are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 7 shows a sealing device 85 according to the sixth embodiment. The sealing device 85 according to this embodiment is substantially different from the sealing device 8 according to the first embodiment described above, in that the operating unit 8B2 is provided with an air-driven or electric motor M and rotation of the motor M. This is in the point constituted by the power conversion mechanism D that converts the movement into the forward / backward movement of the air supply member 8B1. As the power conversion mechanism D, various known mechanisms such as a ball screw mechanism, a rack and pinion mechanism, and a cam mechanism can be employed. Since other matters are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 8 shows a sealing device 86 according to the seventh embodiment. The seal device 86 according to this embodiment is substantially different from the seal device 8 according to the first embodiment described above in that a connecting portion that can be displaced in the forward / backward direction with respect to the seal portion 8A is made of rubber, resin, or the like. The second hollow elastic body seal 8B3 is made of an elastic material, and the operating portion 8B2 is configured to supply / discharge compressed air to / from the hollow elastic body seal 8B3. In this embodiment, the air supply member 8B1, specifically, the air supply pipe 8B12 having the air supply passage 8B11 is held at a predetermined position and does not move. When compressed air is supplied to the second hollow elastic body seal 8B3 via the air supply path (not shown) by the operating portion 8B2, the second hollow elastic body seal 8B3 is expanded and displaced in the forward direction (the seal portion 8A side). And it press-contacts to the end surface of connecting member 8A3. In this state, compressed air is supplied to the hollow elastic body seal 8A1 of the seal portion 8A through the air supply passage 8B11 of the air supply pipe 8B12. On the other hand, when compressed air is discharged from the second hollow elastic body seal 8B3 by the operating portion 8B2, the second hollow elastic body seal 8B3 contracts and displaces in the backward direction (opposite to the seal portion 8A), and the connecting member It leaves | separates from the end surface of 8A3. Since other matters are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  9 and 10 show a sealing device 87 according to the eighth embodiment. The seal device 87 according to this embodiment is substantially different from the seal device 8 according to the first embodiment described above. A single-acting (spring return type) air cylinder mechanism is employed in the operating portion 8B2. The third feature is that the third hollow elastic body seal 8C1 formed of an elastic material such as rubber or resin is attached to the mounting hole 3b2 of the filter support member 3b.

  In the operating portion 8B2, one space inside the housing 8B21 partitioned by the piston 8B15 is a spring chamber 8B22 ', and the other space is an air chamber 8B23. The spring chamber 8B22 'houses a spring, for example, a coil spring 8B26, and the air chamber 8B23 is connected to a compressed air source (both not shown) via an air pipe. When compressed air is supplied to the air chamber 23, the air supply member 8B1 moves forward from the position shown in FIG. 9 toward the seal portion 8A against the elastic force of the coil spring 8B26. On the other hand, when the air chamber 8B23 is switched to the exhaust side, the air supply member 8B1 moves backward by the elastic force of the coil spring 8B26 and returns to the position shown in FIG.

  The third hollow elastic body seal 8C1 has a ring shape and is attached to a recess provided along the inner periphery of the mounting hole 3b2 of the filter support member 3b, for example, a recess 3b3 having a U-shaped cross section. An air supply port 8C2 is connected to one place (or a plurality of locations) in the circumferential direction of the third hollow elastic body seal 8C1, and this air supply port 8C2 is connected to the communication chamber 8C3. The communication chamber 8c3 is connected to the air supply port 8A2 of the hollow elastic body seal 8A1 and the air passage 8A4 of the connection member 8A3.

  The filter 3a is detachably attached (inserted) to the mounting hole 3b2 of the filter support member 3b via the seal material 3a1.

  When compressed air is supplied to the air supply passage 8B11 of the air supply pipe 8B12 in a state where the air supply member 8B1 is moved forward by the operating portion 8B2 and connected to the connection member 8A3, this compressed air is connected from the air supply passage 8B11. The air enters the communication chamber 8C3 through the air passage 8A4 of the member 8A3, flows into the hollow elastic body seal 8A1 through the air supply port 8A2 from the communication chamber 8c, and passes through the air supply port 8C2 from the communication chamber 8C3. Also flows into the hollow elastic body seal 8C1, and the hollow elastic body seal 8A1 and the third hollow elastic body seal 8C1 expand. When the third hollow elastic body seal 8C1 expands, the third hollow elastic body seal 8C1 comes into pressure contact with the inner peripheral portion of the mounting hole 3b2 of the filter support member 3b and the outer peripheral portion of the filter 3a. The gap is sealed, and the filter 3a is fixed to the mounting hole 3b2 of the filter support member 3b. On the other hand, when the air supply member 8B1 moves backward from the connection member 8A3 by the operating portion 8B2, compressed air is discharged from the hollow elastic body seal 8A1 and the third hollow elastic body seal 8C1, and the hollow elastic body seal 8A1. And the third hollow elastic body seal 8C1 contracts. When the third hollow elastic body seal 8C1 contracts, the filter 3a can be removed from the mounting hole 3b2 of the filter support member 3b.

  As shown in FIG. 10, in this embodiment, a plurality of (four in this example) filters 3a are detachably mounted in the above-described manner on the filter support member 3b. The communication chamber 8C3 is formed in an annular body that is continuous along the circumferential direction of the filter support member 3b so as to surround each filter 3a from the outer peripheral side, and is formed in the inner peripheral portion of each mounting hole 3b2 of the filter support member 3b. The attached third hollow elastic body seal 8C1 is connected to the communication chamber 8C3 via the air supply port 8C2. Then, when compressed air is supplied to the air supply passage 8B11 of the air supply pipe 8B12 in the state where the air supply member 8B1 is moved forward by the operating portion 8B2 and connected to the connection member 8A3, the third of the mounting holes 3b2 When the hollow elastic body seal 8C1 is expanded at the same time and the air supply member 8B1 is moved backward by the operating portion 8B2 to leave the connection member 8A3, the third hollow elastic body seal 8C1 of each mounting hole 3b2 is simultaneously contracted. To do.

  Since other matters including the operation and function of the hollow elastic body seal 8A1 are the same as those in the first embodiment, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted. Note that the sealing device 87 according to the eighth embodiment separates the hollow elastic body seal 8A1 and expands and contracts only the third hollow elastic body seal 8C1 in the above-described manner so as to exhibit the above function. It can also be modified.

  FIG. 11 shows a sealing device 88 according to the ninth embodiment. The seal device 88 according to this embodiment is substantially different from the seal device 87 according to the eighth embodiment described above in that a double-acting air cylinder mechanism is employed in the operating portion 8B2, and the connecting member 8A3. The air passage 8A41 is branched from the air passage 8A4, the air supply port 8A2 of the hollow elastic body seal 8A1 is connected to the air passage 8A4, and the communication passage 8C3 (not shown) is connected to the air passage 8A41 through an air passage not shown. The communication chamber 8C3 is connected to the hollow elastic body seal 8A1). The configuration of the compressed air supply unit 8B including the operation unit 8B2 and the configuration of the seal unit 8A (excluding the air passage 8A41) are the same as those of the seal device 8 of the first embodiment. Since other matters are the same as those in the first and eighth embodiments, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 12 shows a sealing device 89 according to the tenth embodiment. The seal device 89 according to this embodiment is substantially different from the seal device 87 according to the above-described eighth embodiment in that the operation unit 8B2 has two air supply pipes 8B12 and 8B12 ′ as cylinder rods. The double-acting air cylinder mechanism is adopted, the connecting member 8A3 is provided with an air passage 8A4 and an air passage 8A4 ', the air passage 8A4 is connected to the air supply port 8A2 of the hollow elastic body seal 8A1, and the air passage 8A4' Is connected to a communication chamber 8C3 (not shown: this communication chamber 8C3 is separated from the hollow elastic body seal 8A1) through an air passage (not shown). The air supply pipe 8B12 'has an air supply passage 8B11' and is connected to a compressed air source (not shown) via the air pipe 8B14 '. A common piston 8B15 is provided on the outer periphery of the central portion of each of the air supply pipes 8B12 and 8B12 ', and a common movable connection member 8B13 is attached to the tip of each of the air supply pipes 8B12 and 8B12'.

  When compressed air is supplied to the air chamber 8B23 of the housing 8B21 via the air pipe 8B25 and the air is discharged from the air chamber 8B22 via the air pipe 8B24, the air supply pipes 8B12 and 8B12 ′ are sealed from the positions shown in FIG. It moves forward toward the portion 8A, and the end face of the connecting member 8B13 comes into contact with the end face of the connecting member 8A3 via the O-rings 8A5 and 8A5 ′. Thereby, the air supply passage 8B11 of the air supply pipe 8B12 is connected to the air passage 8A4 of the connection member 8A3, and the air supply passage 8B11 ′ of the air supply pipe 8B12 ′ is connected to the air passage 8A4 ′ of the connection member 8A3. . In this state, when compressed air is supplied to the air supply passage 8B11 of the air supply pipe 8B12 and the air supply passage 8B11 ′ of the air supply pipe 8B12 ′, the compressed air from the air supply passage 8B11 passes through the air passage 8A4 and the air supply port 8A2. The compressed air from the air supply passage 8B11 ′ flows into the third hollow elastic body seal 8C1 from the communication chamber 8C3 through the air supply port 8C2, and flows into the hollow elastic body seal 8A1. The seal 8A1 and the third hollow elastic body seal 8C1 expand.

  On the other hand, when compressed air is supplied to the air chamber 8B22 of the housing 8B21 via the air pipe 8B24 and the air is discharged from the air chamber 8B23 via the air pipe 8B25, the air supply pipes 8B12 and 8B12 ′ move backward, Returning to the position shown in FIG. Thereby, the connecting member 8B13 is separated from the connecting member 8A3, the compressed air is discharged from the hollow elastic body seal 8A1 and the third hollow elastic body seal 8C1, and the hollow elastic body seal 8A1 and the third hollow elastic body seal 8C1 are Shrink. Since other matters are the same as those in the first and eighth embodiments, substantially the same members and parts are denoted by the same reference numerals, and redundant description is omitted.

  The sealing device of the present invention is not limited to the sealing portion between the filter support member and the fluidized bed container in the fluidized bed device, and a gas dispersion plate (eye plate) movably disposed at the bottom of the fluidized bed container; The present invention can also be applied to a sealing portion between the fluidized bed container. For example, in the fluidized bed apparatus disclosed in Japanese Patent Application Laid-Open No. 2008-18297, the gas dispersion plate (eye plate) is configured to be rotatable around a horizontal rotation axis. The sealing device of the present invention can be applied to a sealing portion between the outer peripheral portion of the dispersion plate (eye plate) and the inner peripheral portion of the fluidized bed container. In addition, the sealing device of the present invention can be applied to a seal portion between an openable / closable inspection window or other opening / closing member provided in the fluidized bed container and the wall portion of the fluidized bed container. The sealing device of the present invention can also be applied to a coating device provided with a ventilating rotary drum that is driven to rotate about an axis. For example, a seal location between a front panel and a casing in a coating apparatus disclosed in Japanese Patent Application Laid-Open Nos. 2003-62500 and 2014-4556, and a coating device disclosed in Japanese Patent Application Laid-Open No. 2006-26592. The sealing device of the present invention can be applied to a sealing portion between the lid and the casing.

DESCRIPTION OF SYMBOLS 1 Fluidized bed container 3 Filter part 3a Filter 3b Filter support member 8 Sealing device 81 Sealing device 82 Sealing device 83 Sealing device 84 Sealing device 85 Sealing device 86 Sealing device 87 Sealing device 88 Sealing device 89 Sealing device 8A Sealing part 8A1 Hollow elastic body Seal 8B Compressed air supply portion 8B1 Air supply member 8B11 Air supply passage 8B11 'Second air supply passage 8B12 Air supply pipe 8B13 Connection member 8B2 Actuator 8B3 Second hollow elastic body seal 8C1 Third hollow elastic body seal

Claims (7)

A sealing device that seals between a stationary member of a powder processing apparatus and a movable member that is movable relative to the stationary member,
A seal portion mounted on the moving side member and having a hollow elastic body seal; and a compressed air supply portion mounted on the fixed side member and configured to supply compressed air to the hollow portion of the hollow elastic body seal of the seal portion; With
The compressed air supply unit includes an air supply passage that communicates with a compressed air source, a connection unit that is displaceable in the advance / retreat direction with respect to the seal unit, and an operation unit that displaces the connection unit in the advance / retreat direction,
The compressed air from the compressed air source is supplied to the hollow elastic body seal of the seal portion via the air supply passage in a state where the connection portion is displaced in the forward direction and connected to the seal portion by the operating portion. The hollow elastic body seal expands, and presses against the moving side member and the fixed side member to seal between them,
By the operating portion, the connecting portion is displaced in the backward direction and is separated from the seal portion, whereby compressed air in the hollow elastic body seal is discharged, the hollow elastic body seal is contracted, and the pressure contact state is The sealing apparatus of the granular material processing apparatus characterized by being cancelled | released.   Due to the pressure contact of the hollow elastic body seal, the moving side member is fixed to the fixed side member, and when the pressure state of the hollow elastic body seal is released, the moving side member is fixed to the fixed side member. The apparatus for sealing a granular material processing apparatus according to claim 1, wherein the sealing apparatus is movable.   The said connection part is comprised by the air supply member which has the said air supply path, The sealing device of the granular material processing apparatus of Claim 1 or 2 characterized by the above-mentioned.   The connecting portion is configured by a second hollow elastic body seal, and the operating portion supplies / discharges compressed air to / from the second hollow elastic body seal, and the first portion accompanying supply / discharge of the compressed air. 3. The sealing device for a granular material processing apparatus according to claim 1, wherein the second hollow elastic body seal is displaced in the forward / backward direction by expansion / contraction of the second hollow elastic body seal.   The granular material processing apparatus is a fluidized bed apparatus, the fixed side member is a fluidized bed container, the moving side member constitutes a ceiling portion of the processing chamber of the fluidized bed container, and is used for solid-gas separation. It is a filter support member which supports a filter, The sealing device of the granular material processing apparatus of any one of Claim 1 to 4 characterized by the above-mentioned.   A third hollow elastic body seal is attached to the filter support member, and the compressed air is passed through the air supply passage and the seal portion in a state where the connection portion is connected to the seal portion. Also supplied to the elastic seal, the third hollow elastic seal expands and presses against the filter and the filter support member to seal between them, and the filter is attached to the filter support member. When the connecting portion is separated from the seal portion, air in the third hollow elastic body seal is also discharged, the third hollow elastic body seal contracts, and the filter supports the filter. The sealing device for a granular material processing apparatus according to claim 5, wherein the sealing apparatus is removable from the member.   A third hollow elastic body seal is attached to the filter support member, a second air supply passage communicating with a compressed air source is provided in the compressed air supply portion, and the connection portion is the seal portion. , Compressed air is also supplied to the third hollow elastic body seal through the second air supply pipe part and the seal part, and the third hollow elastic body seal expands, The filter and the filter support member are pressed against each other to seal between them, the filter is fixed to the filter support member, and the connection portion is separated from the seal portion, whereby the third hollow 6. The air in the elastic body seal is also exhausted, and the third hollow elastic body seal contracts, so that the filter can be removed from the filter support member. Sealing device of the mounting of the particulate material processing apparatus.

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