JP2003126680A - Fluidizing apparatus for powder and granular material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluidizing apparatus for powder and granular materials, having a fluidized bed, controlling the behavior of the powder and granular materials by supplying gas from the outer peripheral side of a treatment chamber through a circumferential face plate 212, thereby applying centrifugal force generated by the rotation of the circumferential face plate 212 to the powder and granular materials while applying centripetal force thereto, and in which can carry out various treatments such as mixing, granulation, coating, drying and reaction, even if the powder and granular materials are in a micron or submicron area. SOLUTION: A gas circulation passage 215 is formed on the outer periphery side of the treatment chamber 2 through the circumferential face plate 212, and the circumferential face plate 212 is formed so as to be rotatable around a shaft center.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a fluid processing apparatus for treating powders and granules by mixing, granulating, coating, drying, reacting, etc., and particularly to treating fine powdery granules. The present invention relates to a suitable fluid processing device.

[0002]

2. Description of the Related Art In general, a fluidized bed apparatus shown in FIG. 15 is known as an apparatus for injecting a gas such as various gases or air into a processing chamber to mix, granulate, coat, dry or react powdery or granular materials. There is. This fluidized bed apparatus comprises a frustoconical container 2A having a ventilating dispersion plate (for example, a punched perforated plate) 3A on the bottom surface, and when this apparatus is used for the drying treatment of powder and granules, Heated air is introduced into the container 2A from below the dispersion plate 3A, and the powdery particles 1A charged in the container 2A are dried while floating and fluidized. On the other hand, when this apparatus is used for granulation processing, the nozzle 4 is
A solid binder is formed between particles by spraying a predetermined granulating binder solution (such as an aqueous solution of carboxymethyl cellulose, polyvinyl alcohol, hydroxypropyl cellulose, etc.) from A to moisten the powder and simultaneously dry it. By doing so, the composition is granulated.

By the way, in recent years, in various fields such as pharmaceuticals, agricultural chemicals, fertilizers, foodstuffs, and ceramics, in order to produce high quality products, it is necessary to enhance the functionality of the particles and to impart new functions to the particles. Is required. Also in the granulation process, it has been required to process fine particle powder in the micron and submicron regions as a raw material. That is, for example, when a granulated product of about 50 μ is produced, the raw material is 10 to 3
It is necessary to handle fine particles in the order of 0 μ, and even in the micron range. However, since the cohesiveness and the adhesiveness rapidly increase as the particle diameter of the treated material decreases, it is impossible to uniformly fluidize and disperse the powder particles in the fluidized bed apparatus having the conventional structure as described above. If the amount of heated air supplied is increased in order to uniformly fluidize and disperse, the fine powder or granules will be blown out of the system as it is. It is extremely difficult to handle and it is impossible to control to form a good fluidized bed. However, there is a limit to the substantial fluidized bed control due to the structure of the apparatus itself.

[0004]

SUMMARY OF THE INVENTION The present invention was devised to eliminate the above-mentioned problems, in which gas is introduced from the outer peripheral side of the processing chamber through the circumferential plate to the inside of the processing chamber. It is possible to form a fluidized bed that controls the behavior of the granular material by applying a centripetal force to the granular material and by imparting a centrifugal force to the granular material with the rotation of the circumferential surface plate. It is an object of the present invention to provide a fluidized-bed processing apparatus for fine particles, which is capable of performing various treatments such as mixing, granulation, coating, drying, and reaction.

[0005]

In order to solve the above-mentioned problems, the technical means adopted by the present invention is to provide a gas in a cylindrical processing chamber into which a powder or granular material is charged through a gas permeable circumferential plate. And a gas that has flowed into the processing chamber, is a flow processing device of the granular material that is discharged to the outside of the processing chamber through a bag filter, on the outer peripheral side of the processing chamber, via the circumferential plate. Forming a circulation path of the gas, the circumferential surface plate,
It is characterized in that it is configured to be rotatable around the axis.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail on the basis of a flow processing apparatus for powder and granules, which is illustrated as a preferred embodiment. FIG. 1 shows a first embodiment in the case where the present apparatus is constructed vertically, and will be described below with reference to FIG. 11 common to the second embodiment. Reference numeral 1 denotes a cylindrical casing, and in the casing 1, a cylindrical processing chamber 2 for processing the granular material is arranged with a predetermined space from the inner wall surface of the casing 1. The processing chamber 2 has a lower fixed plate 201 rotatably linked to the drive device 3 via a rotary shaft 301, and a circumferential surface plate 202 in the outer peripheral surface area of the processing chamber 2 is disposed inside the processing chamber 2. As a predetermined ventilation means for allowing a predetermined gas such as various gases and air to flow in, the dispersion plate is configured to be capable of aeration. The circumferential surface plate 202 is attached between the lower fixing plate 201 and the upper fixing plate 203 by a bolt 204 in a state of being sandwiched between the lower fixing plate 201 and the upper fixing plate 203, and is detachable by a tightening operation of the bolt 204. . The dispersion plate can be appropriately replaced with a perforated plate having different pore diameters, slits, wire nets, multi-layer wire nets, metal fibers, etc., depending on the physical properties such as the particle size of the treated powder. A granulation nozzle 4 for spraying the supplied granulation binder liquid is provided in the processing chamber 2, and the granulation nozzle 4 is provided in the upper fixing plate 203 and the granulation binder liquid. Each pipe for supplying compressed air is provided, and a communication port to a discharge pipe 501 accommodating a cylindrical bag filter 5 is provided as a discharge means for discharging the gas. Further, although the bag filter 5 is provided in the middle of the discharge pipe 501 in FIG. 1, the bag filter 5 may be provided in the processing chamber 2 as shown in FIGS. In the case of the vertical type apparatus, the particles are deposited under the influence of gravity, and the tendency is stronger for the particles having a smaller particle size and poorer fluidity, and the processing chamber 2 is rotated to rotate the particles in the processing chamber 2. Even if a centrifugal force is applied to the granular material, the layer thickness (distance from the circumferential surface plate 202 in the axial direction) tends to increase toward the lower side of the granular material layer. Reference numeral 202a denotes a bottom plate for variably adjusting the internal volume of the processing chamber 2, that is, the height of the processing chamber 2, and the air flow supplied from the gas inflow means uniformly passes through the circumferential surface plate 202 to ensure proper operation. This is for facilitating the formation of a simple fluidized bed, and an arbitrary one such as a non-perforated plate or a perforated plate (in which a predetermined gas can be introduced from below) is adopted.

The casing 1 has a through hole for the rotary shaft 301 at the bottom and a supply port 10 for supplying a predetermined gas (heating gas, various gases such as inert gas) to the side.
3 and a lid 102 having a communication port that communicates with the pipe hole of each pipe for supplying the granulation binder liquid and compressed air to the granulation nozzle 4 and the discharge pipe 501. The lid 102 is attached to the flange portion 104 of the container 101 so as to be openable and closable by bolts. As the gas, heated air obtained by heating the air sent from the blower 6 by the heater 601 is used, and this heated air is sent to the supply port 103 via the supply pipe 105. The compressed air supplied from the compressor 602 and the granulation binder liquid supplied from the binder supply device 604 are respectively sent to the granulation nozzle 4 and finely sprayed into the processing chamber 2. ing. That is, it is preferable to use a so-called two-fluid fine spray nozzle as the granulation nozzle 4 in order to generate fine granules.

The inner wall surface of the casing 1 and the processing chamber 2
The predetermined space formed between the outer peripheral surface area of the circumferential surface plate 202 (ventilation means) is formed as a circulation path 205 for the heated air supplied from the supply port 103. When supplying the heating air to the circulation path 205, as shown in FIG. 11, the supply port is arranged to supply the heating air in the rotation direction of the processing chamber 2, and the supply pipe 105. Is arranged on the side surface of the casing 1 from the substantially tangential direction of the same rotation direction as the processing chamber 2 so that the supply of the heated air is more stable. And
The circulation path 205 and the supply port 103 constitute a gas inflow means for causing the heated air to be dispersed and flown into the processing chamber 2 through the circumferential surface plate 202. The heated air that has flowed into the processing chamber 2 passes through the bag filter 5 from the communication port that opens in the lid 102, and is discharged to the outside of the system through the discharge pipe 501. A pulse jet nozzle 603 for ejecting compressed air from the compressor 602 is provided above the bag filter 5, and the compressed air is intermittently ejected toward the bag filter 5 so that the bag filter 5 The collected particles are returned to the processing chamber 2.

On the other hand, FIGS. 2 to 9 show a second embodiment in which the present apparatus can be configured horizontally, and FIG.
[FIG. 7] is an explanatory diagram common to the first embodiment. In this horizontal flow processing apparatus, the bag filter 5 is arranged at the axial center of the processing chamber 2, and the bottom plate 202a is not provided in the processing chamber 2. The other principles of fluidized bed formation are the same as those of the first embodiment. That is,
2 is an overall front view of the flow processing apparatus, and FIG. 3 is an overall side view of the flow processing apparatus. As shown in these figures, the casing 1 has a body bracket 116 at the bottom thereof.
And is attached to the pedestal 7 via the main body bracket 116. A pair of left and right arm-shaped support frames 711 are erected on the pedestal 7 with a predetermined space therebetween, while a main body bracket 116 is provided with a pair of left and right support shafts 116a protruding outward in the left and right directions. The support shaft 116a
Are rotatably supported by the support frame 711. As a result, the casing 1 is configured such that the rotation axis of the processing chamber 2 can be changed from horizontal to vertical.
Although the processing chamber 2 shown in FIG. 1 can be used in both a vertical type and a horizontal type, in the present apparatus, in the case of the vertical type, the opening 112a of the casing 1 is set upward. Particles are directed toward and away (the rotation axis is vertical) and taken out, and the particles are processed with the opening 112a oriented horizontally (the rotation axis is horizontal).

FIG. 4 is a side view showing a rotary operation mechanism of the main body of the processing apparatus, and FIG. 5 is a detailed view of a main part of the rotary operation mechanism.
As shown in these drawings, a rotating operation mechanism 8 for rotating the casing 1 is provided outside the right side support frame 711 in FIG. Rotation operation mechanism 8
Is a large-diameter gear 8 that is integrally provided on the right support shaft 116a.
11, a small diameter gear 812 that meshes with the large diameter gear 811, and a worm wheel 81 that rotates integrally with the small diameter gear 812.
3. Worm 81 that meshes with the worm wheel 813
4 and a handle shaft 815 for rotating the worm 814. A handle 816 is provided at the front end of the handle shaft 815, and when the handle 816 is rotated, the operating force of the worm 81 is increased.
4, the worm wheel 813, the small diameter gear 812, and the large diameter gear 811 are transmitted to the support shaft 116a, and the casing main body 1 is rotated. Since the worm 814 is interposed in this transmission path, a large reduction ratio can be secured and the steering wheel operating force can be reduced, and the casing main body 1 can be fixed at an arbitrary position by the braking action of the worm 814. It is configured.

FIG. 6 shows a casing main body 1 of the flow processing apparatus.
7 is a rear view showing the casing main body 1, FIG. 8 is a side sectional view showing the casing main body 1, and FIG. 9 is a main portion sectional view of the processing chamber. As shown in these figures,
The casing main body 1 of the flow treatment device has an opening 1 on the front surface.
12a has a cylindrical shape, in which an air circulation path 21
5, a processing chamber 2 having an open front surface, and a bag filter 5 arranged at the axial core of the processing chamber 2. The air circulation path 215 is a circumferential surface plate 212 (dispersion plate) serving as a ventilation means for the inner wall surface of the casing 1 and the processing chamber 2.
Is formed between the outer peripheral surface area and the outer peripheral surface area. The rear surface portion 112b of the casing 1 is integrally fixed to the main body bracket 116, while the opening portion 112a of the front surface portion is covered with a disk-shaped lid body 112 made of transparent acrylic resin. The lid body 112 has an outer peripheral edge portion fixed to the casing 1 by using a plurality of butterfly bolts 117, and can be attached and detached by a tightening operation of the butterfly bolts 117. Further, at the upper right end of the casing 1, a supply port 113 for introducing a predetermined gas (heated air, various gases such as inert gas) into the air circulation path 215 is formed, and the gas introduced from the supply port 113 is supplied. As shown in FIG. 11, it is configured to circulate along the inner peripheral surface of the casing 1. For example, when heating air is introduced, the air generated by the blower 6 is replaced by the heater 6 as in the gas inflow means of the first embodiment shown in FIG.
It is heated at 01 and introduced into the gas supply port 113.

The processing chamber 2 has a disk-shaped rear side fixing plate 21.
1 and a disk-shaped cover body 216 made of a transparent acrylic resin are opposed to each other at a predetermined interval, and a cylindrical dispersion plate 212 is sandwiched therebetween. Fixed plate 2
11 and the cover body 216 are connected by a plurality of bolts 214, and the cover body 216 and the dispersion plate 212 can be attached and detached by a tightening operation of the bolts 214. The dispersion plate 212 is arranged at a predetermined interval with respect to the inner peripheral surface of the casing 1, and the gas introduced from the supply port 113 to the air circulation path 215 passes through the dispersion plate 212 to the processing chamber 2 Is configured to flow into. Further, the dispersion plate 212 can be appropriately replaced with one having different pore diameters and different materials according to the particle diameter of the powder or granular material to be treated, and the perforated plate, slit, wire mesh, multi-layer wire mesh, metal fiber. Etc. can be used. For example, a multi-layer wire mesh
It is formed by stacking multiple meshes with different openings and applying predetermined pressure and temperature for sintering.By configuring the contact surface of the particles with fine meshes, the particles It is possible to prevent clogging due to. The rear side fixing plate 2
At the center of 11 is a cylindrical rotary support shaft 2 extending rearward.
17 are integrally connected, and the rotation support shaft 217 is rotatably supported by an inner peripheral portion of a cylindrical holder 118 provided on the main body bracket 116 via a bearing 119. A motor 3 (driving device) is arranged below the rotation support shaft 217, and a pulley 312 integrally provided on the motor shaft 311 and a pulley 313 integrally provided on the rotation support shaft 217 are transmitted. The belts 314 are interlocked and connected. As a result, the processing chamber 2 is rotated in response to the driving of the motor 3, and it becomes possible to apply a centrifugal force to the powder particles inside.

The bag filter 5 is formed of a cylindrical mesh plate, and has a disc-shaped rear face plate 512 having an opening at the center and a disc-shaped front face plate 513 made of transparent acrylic resin. They are mounted with a gap between them, facing each other and sandwiched between them. Rear plate 512 and front plate 5
13 are connected by a plurality of bolts 514, and the front plate 513 and the bag filter 5 can be attached and detached by a tightening operation of the bolts 514. Bug filter 5
Are arranged at a predetermined distance from the dispersion plate 212, and the gas flowing into the processing chamber 2 through the dispersion plate 212 is discharged through the bag filter 5. In addition, the bag filter 5 can be appropriately replaced with one having a different pore size or different material depending on the particle size of the powder or granular material to be processed. Bag-shaped bag cloth (woven cloth, non-woven cloth) made of various materials to be applied to the retainer
Alternatively, a cylindrical structure may be used. A cylindrical discharge pipe 511 extending rearward is integrally connected to the central opening of the rear plate 512, and is connected to the processing chamber 2
The gas discharged from the bag filter 5 to the discharge pipe 5
It is configured to be discharged to the outside of the apparatus (outside the system) via 11. The discharge pipe 511 is rotatably supported on the inner peripheral portion of the rotation support shaft 217, and has a rotation operation lever 515 integrally provided at the rear end thereof. The rotating operation lever 515 is operated when powder particles are accumulated on the bag filter 5, and the bag filter 5 is allowed to rotate about 180 °. Further, in the bag filter 5, a granulation nozzle 4 is provided as shown in FIG. The granulation nozzle 4 is connected to a binder supply device and a compressor (see FIG. 1) via a pipe, and sprays a predetermined granulation binder liquid supplied from the supply device into the processing chamber 2.

FIG. 10 is a schematic side sectional view showing another example for driving the bag filter 5 in the second embodiment. In the processing apparatus shown in this drawing, the bag filter 5 is rotated by the driving force of the motor 3 without providing the rotation operation lever 515 on the discharge pipe 511, so that the powder particles on the bag filter 5 are dropped. Is configured. In this embodiment, the discharge pipe 511 is provided with a pulley 315 instead of the rotating operation lever 515, while the motor shaft 311 is provided with pulleys 312 and 316 in parallel, and is suspended between the pulleys 315 and 316. The driving force of the motor 3 is transmitted via the driven transmission belt 317 to the discharge pipe 5.
A so-called double rotating shaft mechanism that is transmitted to the gear 11 is adopted.
Further, when the dispersion plate 212 and the bag filter 5 are rotated by the driving force of the motor 3, the transmission ratio is set so that the rotation angular velocity of the bag filter 5 and the rotation angular velocity of the dispersion plate 212 do not match. The pipe of the granulation nozzle 4 is attached to the other end of the pipe of the granulation nozzle 4 so that the tip of the nozzle can be integrally rotated together with the bag filter 5.
It is rotatably jointed. As a result, the granulation nozzle 4 provided in the bag filter 5 is set to the dispersion plate 21.
It is possible to avoid spraying the granulating binder liquid only in the predetermined area of 2. The detailed structure of the double rotating shaft mechanism is
Japanese Patent Application No. 11-43238 can be referred to, and in the above, the bag filter 5 and the dispersion plate 212 can be referred to.
Are rotated in the same direction, but may be rotated in the opposite direction.

Next, in the apparatus configured as described above, a method of drying powder while mixing and granulating powder and granules by mainly considering the second embodiment and adding the first embodiment to FIG.
A description will be given based on Nos. 2 and 13. In order to put a certain amount of powder or granules into the processing chamber 2, first, the opening 11 of the casing 1 is used.
2 a facing upward (vertical type), the lid 112 (10
2) and the cover body 216 are opened, a certain amount of powdery particles are put into the processing chamber 2, and the lid body 112 and the cover body 216 are closed. After that, the casing 1 is laterally transformed, and the motor 3 is driven to rotate the processing chamber 2 to give a centrifugal force to the powder and granular material, so that the circumferential surface plate 212 (202).
It is accumulated evenly on the inner wall surface side. On the other hand, the circulation path 20
5 (215) with the heated air introduced into the circumferential surface plate 2
12 (202) to flow into the processing chamber 2 to impart a centripetal force to the particles to disperse and fluidize them to form a fluidized bed. It should be noted that continuous operation can be performed by providing a material supply / exhaust pipe in the exhaust pipe 511 (501), and if the powder / granulate is charged while the processing chamber 2 is rotated, a predetermined amount of the powder / granulate can be obtained. Can be easily charged in a short time. Further, if necessary, by using the granulation nozzle 4 to allow compressed air to flow into the processing chamber 2, a fluidized bed can be smoothly formed, and a powder layer can be formed into a uniform thickness in an extremely short time. Can be formed. At that time, in the first embodiment, the height of the processing chamber 2 is adjusted by the bottom plate 202a as necessary, and a perforated plate is adopted as the bottom plate 202a to supply heated air from below, If only the compressed air is supplied from the granulation nozzle 4 before performing the granulation operation to fluidize the powder particles in a floating fluidized state, a fluidized bed can be formed smoothly from the initial state of operation, If the above adjustment and supply are used together during operation, it can be used as an aid in forming a uniform powder layer (thickness). Here, in the processing chamber 2, the air velocity is slightly higher inside the powder layer (axial direction), and the centrifugal force applied to the particles is smaller,
Fluidization starts from the surface of the powder layer. Therefore, even if the rotation speed of the processing chamber 2 is constant, it is possible to control from a fixed bed in which the powdery particles are not fluidized to a completely fluidized bed by changing the supply amount of the heated air. In FIG. 13, (A),
(B) and (C) respectively show a fixed bed, a partially fluidized bed and a completely fluidized bed. In the portion where the granular material is fluidized, the individual granular material particles exhibit the microscopic flow behavior shown in FIG. 12 by adjusting the balance between the centrifugal force and the centripetal force. At that time, a pressure difference occurs before and after the powder layer through which the heated air passes, and in the casing 1, the circulation path 21
5 (205) shows a high pressure, and the inside of the processing chamber 2 shows a low pressure. This differential pressure increases as the powder layer thickness, the rotation speed of the processing chamber 2, and the heated air amount (wind speed) increase. When the thickness of the powder layer and the rotation speed of the processing chamber 2 are constant, the differential pressure increases with the wind speed, but becomes constant when the speed exceeds a certain speed, and at this time, the powder and granules are completely fluidized, This speed is defined as a complete fluidization start speed. This complete fluidization start speed can be theoretically calculated from the relationship between the differential pressure of the powder layer and the wind speed. Therefore, the behavior of the powder and granular material in the processing chamber 2 is determined by adjusting the balance between the rotation speed of the processing chamber 2 and the air supply amount, and adjusting the differential pressure between the circulation path 215 (205) and the processing chamber 2. The granules are attached to the circumferential plate 212 (20
The configuration is such that a series of behaviors can be controlled from the fixed layer formation state in which the centrifugal force is applied to the 2) side to the fluidized bed formation state in which the centripetal diffusion is performed in the axial direction. In the case of the vertical apparatus as in the first embodiment, since the powder or granules are easily affected by the gravity, a wind velocity higher than the calculated value is required to fluidize the powder or granules. The smaller the particle size and the poorer the flowability, the stronger the tendency is. Therefore, in order to control the apparatus, it is preferable to confirm by actual measurement in advance by using the actually used powder and granules.

According to the control means for controlling the centrifugal force and the centripetal force, the behavior of the powder or granular material as shown in FIG. 13 can be controlled. However, the binder liquid is finely sprayed in the state of a fixed bed (FIG. 13 (A)) in which the particles are not fluidized at all or a partially fluidized bed (FIG. 13 (B)) in which only the inside of the powder layer is fluidized. However, since it is difficult to uniformly granulate the entire powder or granules put into the processing chamber 2, mixing (granulation) and drying are usually performed with the same fluidized bed (C). . In addition, a centrifugal force larger than the centripetal force is applied to the granular material, an operation of pressing the circumferential surface plate 212 (202) side to compress the granular material, and imparting a balanced centripetal force and centrifugal force, Granulation can also be carried out by repeatedly performing the operation of uniformly fluidizing the powder or granules, that is, by repeatedly forming the completely fluidized bed of the same (C) as the fixed bed of FIG. 13 (A). Also in this case, it is preferable to spray the binder liquid, but since granulation can be performed with a small amount of binder liquid, the energy cost required for drying can be significantly reduced.

FIG. 14 is an explanatory view showing an example of use of the rotary operation lever 515. As shown in the figure, when processing the powder or granules, the powder or granules are put into the processing chamber 2 (see FIG.
(A)), the processing chamber 2 is rotated (FIG. 14 (B)),
In the initial stage of rotation, the rotation speed is slow and the centrifugal force acting on the powder and granules is small, so that the powder and granules fall freely and accumulate on the bag filter 5 (FIG. 14C). When the rotation speed of the processing chamber 2 becomes equal to or higher than a predetermined speed, most of the powder and granules form a powder layer on the inner peripheral surface of the dispersion plate 212 by the centrifugal force, but the powder and granules deposited on the bag filter 5 are formed. Since no centrifugal force is applied to the device, the state is maintained as it is (FIG. 14 (D)). Therefore, when the rotating operation lever 515 is operated to rotate the bag filter 5 by about 90 °, the powder and granular material accumulated on the bag filter 5 falls by its own weight (FIG. 14 (E)). The falling particles are assimilated by the gravity and the centrifugal force into the particles already forming a layer on the inner peripheral surface of the dispersion plate 212. As a method of not using the rotation operation lever 515, the configuration in which the bag filter 5 is rotated by the driving force of the motor 3 as described above is used, and the powder particles on the bag filter 5 are dropped. Alternatively, by using a structure using a retainer and a bag-shaped bag cloth that is attached to the retainer, compressed gas is intermittently ejected from the discharge pipe 511 to instantly inflate the bag cloth, and to disperse the powder particles. You may

In the embodiment of the present invention configured as described above, a fluidized bed of powder particles is formed in the processing chamber 2 to perform mixing, granulation and drying. In the obtained fluidized bed, the processing chamber 2 has a circumferential surface plate 212 as a ventilation means which is composed of a dispersion plate.
(202) is configured to be rotatable around the axis, and the heated air supplied from the gas inflow means via the rotatable circumferential surface plate 212 (202) is used as the processing chamber 2
The control means for controlling the centrifugal force due to the rotation of the processing chamber 2 and the centripetal force due to the inflow of the heated air controls the behavior of the granular material in the processing chamber 2. ing. Therefore, the centrifugal force and the centripetal force from the opposite directions can be imparted to the powder particles in the processing chamber 2 in a balanced manner, and the powder particles can be applied to the circumferential surface plate 2
The behavior can be controlled so that the fluidized state is dispersed in the predetermined area on the 12 (202) side while maintaining the state of being collected with a uniform layer thickness. Further, even if the heated air required to uniformly disperse the powder or granules is supplied, since the centrifugal force acts on the powder or granules, the powder or granules can be dispersed like a conventional fluidized bed apparatus. There is no fear of being blown away, a good fluidized bed can be formed, and fine particles in the micron or submicron range can be processed. Moreover, it is possible to easily perform the balance adjustment operation of the centrifugal force and the centripetal force by the control means, and it is possible to perform the behavior control so as to appropriately form the fixed bed, the partially fluidized bed, and the complete fluidized bed with respect to the granular material. During the granulation process as described above, the fixed bed to the completely fluidized bed are repeatedly formed, and in addition to the cohesive force and adhesive force of the raw material granular material, the granular material is subjected to the compression processing. As a result, it is possible to generate a strong granulated product and improve the processing efficiency. Further, the behavior of the granular material is that the fluidized bed is formed by being collected in a predetermined area on the side of the circumferential surface plate 212 (202), so that the fluidized bed is formed in the rotation center area in the processing chamber 2. The granulation nozzle 4 and the bag filter 5 can be arranged without adversely affecting, and the space in the processing chamber 2 can be effectively utilized. Although the processing chamber 2 in the present embodiment is formed in a cylindrical shape, the present invention is not limited to this, and may be a truncated cone shape or an enlarged central portion if the cross section at any position is concentric. Further, the whole or a part thereof may have a double-barrel structure. When the processing chamber 2 having a shape other than the cylindrical shape is used, the powder particles accumulated on the circumferential surface plate 212 (202) side are
It is needless to say that a fluidized bed having a partially different layer thickness, which is peculiar to the shape of, can be formed, and the mixing, granulation, and drying treatments can be performed using this.

The processing chamber 2 has a circulation path 21 for the air, which has a predetermined space in the casing 1 between the inner wall surface of the casing 1 and the outer peripheral surface area of the circumferential surface plate 212 (202).
5 (205) is formed, and the gas inflow means is
Since it is composed of the supply port 113 (103) for introducing the heated air from the supply device (blower 6) and the circulation path 215 (205), the heating air is equalized in the circulation path 215 (205). Thus, the particles can be uniformly dispersed and flown into the processing chamber 2. Moreover, this circuit 21
5 (205) is, for example, the circumferential surface plate (perforated plate) 212
Even if the openings of the ventilation holes of (202) are larger than those of the granular material and the granular material is discharged to the circulation path 215 (205) side during the processing, the air flows through the circumferential plate 203 into the processing chamber. Since it forms a flow path that flows into the inside 2 and is discharged to the bag filter 5, it can be taken into the processing chamber 2 again. Although the gas inflow means is composed of the supply port 113 (103) and the circulation path 215 (205) as described above, the present invention is not limited to this, and the point is that the heated air supplied is surrounded by the circumference. The circulation path 215 (205) does not need to be provided as long as the face plate 212 (202) is uniformly supplied from the outer peripheral surface area thereof.

Further, since the supply port 113 (103) is arranged on the side surface of the casing 1 so that the heated air is supplied in the same rotation direction as that of the processing chamber 2 and in the vertical direction, the supply port 113 (103) is provided. From (103) to circuit 215 (2
The heated air supplied to the circulation path 215 (2)
05) in a certain direction (rotational direction of the processing chamber 2) and uniformly and smoothly dispersed and flown into the processing chamber 2 through the ventilation holes of the circumferential plate 212 (202). It can provide even centripetal force.

At the center of the processing chamber 2, a bag filter 5 for discharging the heated air that has flowed into the processing chamber.
The heated air in the processing chamber 2 can be efficiently discharged from the rotation center region that does not adversely affect the behavior of the granular material, and the bag filter 5 can be discharged to this region. Can be arranged, and the rotation center region can be effectively utilized, so that the entire apparatus can be made compact.

Further, the control means centrifugally presses the granular material toward the circumferential surface plate 212 (202) side by adjusting the balance between the rotation speed of the processing chamber 2 and the supply amount of air to form a uniform layer. The behavior can be controlled from a fixed layer formation state in which the layers are gathered in a thickness to a fluidized layer formation state in which the fluid is fluidized by centripetal diffusion in the axial direction. Therefore, the control means can easily perform the balance adjustment operation of the centrifugal force and the centripetal force, and the granular material can be processed by the behavior control for appropriately forming the fixed bed, the partial fluidized bed, and the complete fluidized bed, During the granulation process, it becomes possible to granulate by controlling the behavior in which the compression in the fixed bed formation state and the dispersion in the fluidized bed formation state are repeated, and in addition to the cohesive force and adhesive force of the raw material granules themselves. Then, by subjecting the powdery or granular material to a compression treatment, it is possible to generate a strong granulated product and improve the processing efficiency.

A granulation nozzle 4 is provided in the center of the processing chamber 2, and a peripheral surface plate 212 (2) is provided.
Since the granulation binder liquid is sprayed from the granulation nozzle 4 in the direction 02), the granulation binder liquid itself is also centrifugally applied to the circumferential surface plate 212 (20).
Since it is evenly sprayed to the 2) side, the granules can be efficiently moistened and granulated.

Further, a cylindrical processing chamber 2 into which the powder and granules are charged.
In addition, while the gas is allowed to flow in through the air-permeable circumferential surface plate 212 and the gas that has flowed into the processing chamber 2 is discharged to the outside of the processing chamber through the bag filter, the outer peripheral side of the processing chamber 2 In addition, while forming the gas circulation path 215 via the circumferential surface plate 212, the bag filter 5 is disposed inside the axial center of the processing chamber 2, and the circumferential surface plate 212 is Since it is configured to be rotatable in the circumferential direction of the bag filter 5, gas is introduced from the outer peripheral side of the processing chamber 2 through the circumferential surface plate 212, and the powder particles are formed as the circumferential surface plate 212 rotates. Centrifugal force can be applied, and even fine particle powder in the micron and sub-micron region can be subjected to various treatments such as mixing, granulation, coating, drying and reaction while controlling its behavior.
In the rotation center region that does not adversely affect the behavior with respect to the granular material in the processing chamber 2, the entire filter surface of the bag filter 5 is uniformly used, and the inflow gas can be dispersed and evenly discharged. Avoiding the drift of the gas,
It is possible to facilitate the behavioral control in which the centrifugal force and the centripetal force are well balanced, contribute to the formation of a uniform and stable fluidized bed, and further improve the processing efficiency.

Further, since the granulating nozzle 4 is provided in the bag filter 5, not only can the granulating binder liquid be sprayed from the central portion of the processing chamber 2, but also the bag filter 5 can be granulated by the granulating nozzle 4. It can also be used as a support member for simplifying the structure.

Further, since the bag filter 5 is configured to be rotatable in the circumferential direction thereof and is rotated by the rotation operation lever 515 (operating means), the bag filter 5 is
It is possible to easily drop the granular material accumulated on the top.
Further, in another embodiment, the bag filter 5 is
Since it is configured to be rotatable in the circumferential direction and is rotated by the motor 3 (driving means), it is not necessary to operate the rotation operation lever 515, and the powder particles on the bag filter 5 are forcibly forced by centrifugal force. The bag filter 5 can be separated to prevent clogging of the bag filter 5. Moreover, since the rotational angular velocity of the bag filter 5 and the rotational angular velocity of the circumferential surface plate 212 are different, the relative position between the granulation nozzle 4 and the circumferential surface plate 212 is changed, and the granulation binder liquid is powdered. It can be sprayed evenly on the body. Further, the compressed air from the compressor is intermittently blown to the bag filter 5, so that the fine powder particles shaken off from the filter surface form the powder particles in the processing chamber 2. Therefore, there is no problem of component separation.

The motor 3 and the exhaust pipe 511 (gas exhaust passage) are arranged on the rear side of the processing chamber 2, and the cover body 216 and the lid body 112 for opening and closing the processing chamber 2 are arranged on the front side of the processing chamber 2. Therefore, the processing chamber 2 is enclosed in the casing 1, and each can be configured as a single unit. As a result,
Opening and closing and sealing of the processing chamber 2 can be facilitated as compared with the first embodiment. Moreover, since the cover body 216 and the lid body 112 are formed of a transparent member, the behavior thereof can be controlled while visually confirming the processing state of the powdery or granular material.

A casing body 1 having a processing chamber 2 is also provided.
Is arranged such that the rotation axis of the circumferential surface plate 212 is oriented in the horizontal direction and is configured to be rotatable about a support axis 116a which is horizontal and orthogonal to the rotation axis, as a fulcrum. At the time of body treatment, the fluid treatment device can be configured horizontally, and due to its structure, a good fluidized bed can be formed by avoiding the bias of powder and granular material due to gravity. Since it is easy to uniformly accumulate the powdery particles on the inner wall surface side of the circumferential surface plate 212, it is possible to easily obtain a fluidized bed uniformly dispersed and fluidized. Therefore, there is no need to adjust the volume of the inside of the processing chamber 2 by the bottom plate 202a, the inflow air distribution to the circumferential surface plate 212 can be made uniform, and the behavior of the fluidized bed can be easily controlled. Further, when not processing, by rotating the casing body 1 so that the opening 112a of the casing 1 faces upward, it is possible to easily insert and remove the powder and granules, and to vertically move the casing 1. Since the posture can be changed from horizontal to horizontal, it can be used in both vertical and horizontal types.
It is possible to perform processing using the transformation process including the tilted posture in the range of °. Moreover, the main body of the processing device is the worm 814.
Since the rotation operation is performed via the reduction gear mechanism including the above, a large reduction ratio can be secured and the steering wheel operation force can be reduced, and the casing 1 can be fixed at an arbitrary position by the braking action of the worm 814.

[0029]

EFFECTS OF THE INVENTION According to the present invention, gas is introduced into the cylindrical processing chamber 2 into which the powder or granular material is charged through the air-permeable circumferential surface plate 212, and the gas flowing into the processing chamber 2 is introduced. ,
A flow processing apparatus for a granular material discharged to the outside of a processing chamber via a bag filter 5, wherein the gas circulation path 215 is formed on the outer peripheral side of the processing chamber 2 via the circumferential surface plate 212. Since the circumferential surface plate 212 is configured to be rotatable about the axis, gas is introduced from the outer peripheral side of the processing chamber through the circumferential surface plate 212 to exert a centripetal force on the granular material, and the circumferential surface plate 212 It is possible to form a fluidized bed that controls the behavior of the granular material by applying a centrifugal force to the granular material with the rotation of, and even if it is a fine particle granular material in the micron or submicron region, mixing, Various treatments such as granulation, coating, drying and reaction can be performed.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of a vertical flow processing device.

FIG. 2 is an overall front view showing an embodiment of a horizontal flow processing device.

FIG. 3 is an overall side view of a horizontal flow processing device.

FIG. 4 is a side view showing a rotating operation mechanism of the casing body.

FIG. 5 is a detailed view of a main part of a rotation operation mechanism.

FIG. 6 is a front view showing a casing body.

FIG. 7 is a rear view showing the casing body.

FIG. 8 is a side sectional view showing a casing body.

FIG. 9 is a sectional view of a main part of a processing chamber.

FIG. 10 is a schematic side sectional view showing another example of a bag filter.

FIG. 11 is a cross-sectional view of a main part of a fluidizing device.

FIG. 12 is an explanatory diagram of the behavior of powder and granular material.

FIG. 13 is an explanatory diagram showing a behavior mode of a powder / particle layer.

FIG. 14 is an explanatory diagram showing a usage example of a rotation operation lever.

FIG. 15 is a sectional view of a main part of a conventional drying and granulating apparatus.

[Explanation of symbols]

1 casing 101 container 102 lid 103 supply port 104 Flange 105 supply pipe 112 lid 112a opening 112b rear part 113 supply port 116 body bracket 116a spindle 117 Butterfly bolt 118 cylindrical holder 119 bearing 2 processing room 201 Lower fixing plate 202 Circular plate (dispersion plate) 202a bottom plate 203 Upper fixing plate 204 volts 205 air circulation 211 Rear fixing plate 212 Circular plate (dispersion plate) 214 volts 215 Air circuit 216 cover body 217 rotating spindle 3 drive 301 rotation axis 311 motor shaft 312 pulley 313 pulley 314 transmission belt 315 pulley 317 transmission belt 4 Granulation nozzle 5 Bug filter 501 discharge pipe 511 discharge pipe 512 rear plate 513 front plate 514 Volts 515 Rotation operation lever 6 Blower 601 heater 602 compressor 603 pulse jet nozzle 604 Binder supply device 7 stand 711 support frame 8 Rotation operation mechanism 811 large diameter gear 812 small diameter gear 813 worm wheel 814 Warm 815 handle shaft 816 handle

Claims (13)

[Claims] 1. A gas is caused to flow into a cylindrical processing chamber into which powders and granules are charged through a gas permeable circumferential plate, and the gas flowing into the processing chamber is processed through a bag filter. A flow processing device for a powder or granular material discharged to the outside, wherein a circulation path for the gas is formed on the outer peripheral side of the processing chamber via the circumferential surface plate, and the circumferential surface plate is rotated around an axis. A fluidized-bed processing device for powdery or granular material characterized in that it is configured to be possible. 2. The powder according to claim 1, wherein the bag filter is provided inside the center of the processing chamber, and the circumferential surface plate is rotatable in the circumferential direction of the bag filter. Granular fluid treatment equipment. 3. The flow processing apparatus for powder or granules according to claim 1, wherein a granulation nozzle is provided in the bag filter. 4. The flow treatment for powdery or granular material according to claim 2, wherein the bag filter is configured to be rotatable in a circumferential direction thereof and is rotated by a predetermined operation means. apparatus. 5. The powder / fluid flow treatment device according to claim 2, wherein the bag filter is configured to be rotatable in a circumferential direction thereof and is rotated by a predetermined driving device. 6. The fluidized-particle processing apparatus according to claim 5, wherein the rotational angular velocity of the bag filter and the rotational angular velocity of the circumferential surface plate are different. 7. The driving device for rotating the circumferential surface plate and a gas discharge path communicating with the bag filter are arranged on one side of the processing chamber according to any one of claims 1 to 6. A flow processing apparatus for powdery particles, wherein a cover body that opens and closes the processing chamber is arranged on the other side of the processing chamber. 8. The fluidized-particle processing apparatus according to claim 7, wherein the cover body is at least partially formed of a transparent member or a semitransparent member. 9. The casing main body having the processing chamber according to claim 1, wherein the rotation axis of the circumferential surface plate is arranged in the horizontal direction and is horizontal and orthogonal to the rotation axis. A flow processing device for powdery or granular material, which is configured to be rotatable around a support shaft. 10. The powdery / fluidic treatment device according to claim 9, wherein the casing body is rotatably operated via a reduction gear mechanism including a worm. 11. The fluidized-bed processing apparatus according to claim 1, wherein the circumferential surface plate is made of a perforated plate, a slit, a wire net, a multi-layer wire net, or a metal fiber. 12. The powdery / fluidic fluid treatment device according to claim 1, wherein the bag filter is formed in a tubular shape by a retainer and a bag cloth covered with the retainer. 13. The flow processing apparatus according to claim 1,
A fluidized-bed processing apparatus for powders and granules, which is used for mixing, granulation, coating, drying or reaction of powders or granules.