JPH06170208A - Particle treating device - Google Patents

Abstract

PURPOSE:To surely prevent the cross contamination of particles irrespective of the time when air flow is introduced into an annular gap. CONSTITUTION:An annular duct 33 whose upper surface is opened is freely attachably and detachably provided just below an annular gap 13. A V-ring 41 which hermetically comes into slidable contact with the underside of a turntable 3 is fitted to the upper end of the inner peripheral surface on the inside diameter side of the annular duct 33. And the inner peripheral surface on the outside diameter side of the annular duct 33 is connected to the lower part of a treating vessel 1, located on the same vertical surface as the outside diameter part of the annular gap 13. A lower nozzle directed tangentially and in the same direction as the rotating direction of the turntable 3 is fitted to the annular duct 33.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a particle processing apparatus used for the purpose of processing powder particles in the fields of manufacturing pharmaceuticals, agricultural chemicals, foods, electronic materials, chemical products and the like. The present invention relates to an apparatus for improving the added value of powder particles by performing processing such as granulation and coating.

[0002]

2. Description of the Related Art As a device for subjecting raw material powder particles to processing such as granulation and coating, a number of particle processing devices called centrifugal tumbling flow type have been proposed in the past (Japanese Patent Publication No.
61-5770, JP-A-62-258734, etc.). In these devices, a circular rotating disk that horizontally rotates is provided at the bottom of a cylindrical processing container, and a gas flow mainly in the vertical direction is generated from a ring-shaped gap formed between the rotating disk and the processing container. For example, the gist is that the rising air flow is ejected.

The operation of this apparatus will be described in detail. The powder particles (hereinafter, simply referred to as “particles”) supplied into the processing container are moved on the rotary disk by centrifugal force generated by the rotation of the rotary disk. Rolls in the radial direction. Next, the particles are blown up by the rising airflow passing through the ring-shaped gap and flow while rising along the inner diameter surface of the processing container, and eventually fall toward the vicinity of the center of the processing container. By spraying a binder liquid or a coating liquid from a spray nozzle provided at a predetermined position in the processing container during the rolling and flowing of such particles,
Processing operations such as granulation and coating of particles are performed.

[0004]

By the way, in developing a particle processing apparatus today, how to activate cyclic rolling and flow motion of particles and how to use GMP
An important issue is how to provide excellent equipment in terms of (Good Manufacturing Practice). In order to prevent the achievement of such a problem, the conventional device has the following problems.

In order to provide a device excellent in terms of GMP, particles in the processing container are reliably prevented from passing through the gap between the rotating disk and the processing container and falling into the space below the rotating disk. There is a need. This is because the particles that have stayed in the space below the rotating disk due to being dropped are mixed into different kinds of particles at the time of restarting after replacement of the particles, and so-called cross contamination occurs.

An example of the measures for preventing this cross contamination is disclosed in Japanese Patent Publication No. 61-5770. This device, on the inner diameter surface of the processing container facing the outer diameter surface of the turntable,
A ring-shaped hollow tube body is provided, and the hollow tube body is expanded and brought into close contact with the outer diameter surface of the rotating disk to prevent particles from falling. However, the main purpose of this device is to prevent the particles from falling when the device is stopped, that is, when the air flow is not introduced into the gap, and when the device is operating, that is, when the air flow is introduced, the particles are prevented from falling. Is not considered. In this case, if you dare to prevent the particles from falling, it is unrealistic to narrow the width of the gap extremely (about 0.5 mm) or increase the wind speed of the rising air flow extremely (10 m / sec or more). It is not preferable because various measures are required.

On the other hand, a structure disclosed in Japanese Patent Laid-Open No. 62-258734 can be cited as a structure capable of preventing the particles from falling during the operation of the apparatus. In this device, particles that have fallen from the gap are collected by a gas permeable leak preventer (for example, a wire mesh) arranged below the gap, and the collected particles are returned to the inside of the processing container by a ventilation air flow. But,
In this structure, since the pressure loss in the leak prevention means becomes large, the rising air pressure tends to be lowered, and the fluidity of the particles may be lowered.

Further, in the conventional apparatus, particles tend to adhere to the inner diameter surface of the processing container in the vicinity of the highest rising position of the fluid particles,
It was a problem for GMP. This is because the particles located below the processing vessel make a vigorous flow motion due to the rising air flow, while the particles reaching the maximum rising position are not affected by the rising air flow so much that the particles accumulate. Based on. In conventional devices, almost no suitable measures have been taken against such particle adhesion, and improvement is desired.

Therefore, the main object of the present invention is to reliably prevent cross-contamination of particles while ensuring active flow motion of particles, and to reduce adhesion of particles to the inner diameter surface of the processing container. The object of the present invention is to provide a particle processing device excellent in GMP.

[0010]

In order to achieve the above object, according to the present invention, a processing container having a substantially cylindrical shape and a turntable that horizontally rotates in the vicinity of the bottom of the processing container are provided from outside the system. The gas flow supplied below the rotary disk is jetted upward through the ring-shaped gap formed between the outer diameter surface of the rotary disk and the inner diameter surface of the processing container facing the rotary disk, and this gas flow and rotation In a device that performs particle processing operations such as granulation and coating by causing particles in the processing container to rotatively flow by synergistic action with the rotating motion of the board, the inner diameter side inner circumference is located just below the ring-shaped gap. The upper end of the surface has a seal portion for sealing with the lower surface of the rotating disk, the outer diameter side inner peripheral surface is connected to the inner diameter surface of the processing container, and a portion facing the ring-shaped gap is formed. An open ring-shaped duct is provided, and this ring-shaped duct In, fitted with a lower nozzle toward the same direction as the rotation direction of the tangential direction a and the rotating disk.

The processing container has a substantially cylindrical shape, and a rotating disk that horizontally rotates in the vicinity of the bottom of the processing container. The gas flow supplied from the outside of the system to the lower part of the rotating disk is the outer diameter of the rotating disk. It is jetted upward from a ring-shaped gap formed between the surface and the inner diameter surface of the processing container which faces the surface, and is transferred to particles in the processing container by the synergistic effect of this rising gas flow and the rotary motion of the rotating disk. In an apparatus that performs particle processing operations such as granulation and coating by performing dynamic flow, sealing is performed immediately below the ring-shaped gap and at the upper end of the inner peripheral surface on the inner diameter side with the lower surface of the rotating disk. A ring-shaped duct having a seal portion, an inner peripheral surface on the outer diameter side connected to the inner diameter surface of the processing container, and an opening at a portion facing the ring-shaped gap is provided, and the ring-shaped duct has a tangential direction. And in the same direction as the rotating direction of the turntable On the other hand, a lower nozzle is attached, and a portion of the processing container facing the outer diameter surface of the rotating disk is divided at a plurality of positions in the circumferential direction, and arc-shaped divided bodies formed by this division are respectively processed. It is configured to move back and forth independently in the radial direction.

It has a substantially cylindrical processing container and a rotary disk that horizontally rotates near the bottom of the processing container. The gas flow supplied from outside the system to the lower part of the rotary disk is the outer diameter of the rotary disk. It is jetted upward from a ring-shaped gap formed between the surface and the inner diameter surface of the processing container which faces the surface, and is transferred to particles in the processing container by the synergistic effect of this rising gas flow and the rotary motion of the rotating disk. In an apparatus that performs particle processing operations such as granulation and coating by performing dynamic flow, sealing is performed immediately below the ring-shaped gap and at the upper end of the inner peripheral surface on the inner diameter side with the lower surface of the rotating disk. A ring-shaped duct having a seal portion, an inner peripheral surface on the outer diameter side connected to the inner diameter surface of the processing container, and an opening at a portion facing the ring-shaped gap is provided, and the ring-shaped duct has a tangential direction. And in the same direction as the rotating direction of the turntable Only the lower nozzle and mounted, and formed into a substantially parallel inclined surfaces and inner surface of the outer diameter surface of the turntable constituting the ring gap, the processing vessel opposed thereto, and,
The outer diameter surface of the turntable and the inclined surface of the processing container are moved relative to each other in the vertical direction.

A processing container having a substantially cylindrical shape and a rotary disk which horizontally rotates near the bottom of the processing container are provided. A gas flow supplied from the outside of the system to the lower part of the rotary disk has an outer diameter of the rotary disk. It is jetted upward from a ring-shaped gap formed between the surface and the inner diameter surface of the processing container which faces the surface, and is transferred to particles in the processing container by the synergistic effect of this rising gas flow and the rotary motion of the rotating disk. In a device for performing particle processing work such as granulation / coating by performing dynamic flow, in the inner diameter surface of the processing container,
A strip-shaped gas jetting portion for supplying a gas flow toward the internal space of the processing container was provided near the average highest rising position of the fluidized particles.

Further, the central portion of the turntable is raised in a substantially conical shape.

A processing liquid supply nozzle and a powder supply nozzle were provided on the side wall of the processing container.

A powder supply nozzle was provided on the side wall of the processing container aiming at the flow range of the particles, and the processing liquid supply nozzle was housed concentrically in the powder supply nozzle.

On the side wall of the processing container, the wettability detecting means was provided by locating the detecting portion within the flow range of the particles.

[0018]

The particles dropped from the ring-shaped gap are collected in the ring-shaped duct and swirled in the duct in the same direction as the turntable by the tangential gas flow supplied from the lower nozzle. Here, since the ring-shaped duct is sealed to the rotary disk by the seal portion provided on the inner peripheral surface of the inner diameter side, particles in the duct do not leak to the outside. Eventually, the particles are blown up through the ring-shaped gap while swirling, and swirl and rise in the processing container. Further, the particles rolling on the rotating disk and reaching the ring-shaped gap also rise while swirling in the processing container by receiving the swirling gas flow. As described above, when the swirling gas flow is applied to the particles, the flow motion of the particles becomes more active than when only the vertical gas flow is applied.

At least a portion of the processing container facing the outer diameter surface of the rotating disk is divided into a plurality of pieces in the circumferential direction, and the arc-shaped divided bodies formed by the division are independently provided in the processing container in the radial direction. By configuring it to move back and forth freely,
The width of the ring-shaped gap can be reduced or expanded, allowing smooth gap adjustment.

By adhering to the inner diameter surface of the processing container, a gas ejection portion for supplying a gas flow toward the inner space of the processing container is formed in the vicinity of the average highest rising position of the fluidized particles on the inner diameter surface of the processing container. The particles are blown toward the inside of the processing container by the gas flow supplied from the gas ejection portion. This makes it possible to reduce the amount of particles attached to the inner diameter surface of the processing container. In addition, this gas flow eliminates the particle retention region generated in the upper part of the processing container, so that the flow motion of the particles can be further activated.

[0021]

Embodiments of the present invention will be described below with reference to FIGS.

FIG. 1 is a sectional view of a particle processing apparatus according to the present invention. However, in FIG. 1, an upper structure of the particle processing apparatus, for example, an exhaust facility is not shown.

At the bottom of the substantially cylindrical processing container (1), a circular turntable (3) is horizontally arranged close to the lower edge of the processing container (1). The turntable (3) is driven by a continuously variable speed motor (not shown) arranged below and rotates at a given speed in a certain direction, for example, clockwise in the drawing. The outer peripheral portion of the turntable (3) is formed so as to curve upward while gradually thinning, and
The outer diameter surface is formed substantially vertically. A substantially conical raised member (5) is attached to the center of the turntable (3), and the outer peripheral surface of the raised member (5) and the upper surface of the turntable (3) are smooth curved surfaces. It is continuous. As a result, the particles that have fallen from above smoothly convert their movement direction to the radial direction while sliding down the raised member (5). Therefore, the flow motion of particles is smoothed, and efficient particle processing work is possible.

A clearance adjusting mechanism (7) is provided around the rotary disk (3) and on substantially the same plane as the rotary disk (3). The gap adjusting mechanism (7) rotates a plurality of arc-shaped divided bodies (9) in a radial direction by a thin air cylinder (11) to rotate the divided body (9) and the inner diameter surface of the divided body (9). It is for reducing / enlarging the ring-shaped gap (13) formed between the outer diameter surface of the board (3).

As shown in the sectional view of FIG. 2, the divided body (9) is formed by dividing an appropriate ring body into four equal parts in the circumferential direction, and the divided body (9) is at the central portion and has an outer diameter. Four air cylinders (11) are connected to each side. A guide (15) having an isosceles triangle shape fixed to the substrate (19) is arranged between the divided bodies (9), and the guide (15) controls the moving direction of each divided body (9). It is restricted in the radial direction.

FIG. 3 is an enlarged sectional view showing the peripheral structure of the gap adjusting mechanism (7). As shown in the figure, the divided body (9) is arranged between the guide member (17) and the substrate (19). The guide member (17) is attached to the lower end of the processing container (1), and the inner diameter surface of the guiding member (17) forms a curve continuous with the upper surface on the outer peripheral side of the rotating disk (3) and the inner diameter surface of the processing container (1). It is shaped like a curved surface. Guide members (17)
A purge air flow path (21) is formed in the contact space between the contact portion between the divided body (9) and the guide member (17) and the external space. By blowing air into the purge air flow path (21), it is possible to prevent particles from entering the gap between the guide member (17) and the divided body (9). The board (19) is provided with a protrusion (23),
A restricting member (25) is mounted on the outer diameter side of the protrusion (23). An engaging portion (29) protruding from the lower surface of the split body (9) is radially provided in the recess (27) formed by the outer diameter surface of the protrusion (23) and the inner diameter surface of the regulating member (25). It is fitted with a gap (s). Thereby, the divided body (9) can be moved in the radial direction within the range of the gap (s). The air cylinder (11) is mounted on the base plate (19), and the piston rod (31) thereof is fitted and fixed in the split body (9) by penetrating the guide member (17). A Teflon ring (32) having low friction is mounted on the inner diameter side between the split body (9) and the substrate (19) so as to smooth the radial movement of the split body (9).

With such a structure, when each air cylinder (11) is moved in and out, each divided body (9) moves forward and backward in the radial direction, and the width (t) of the ring-shaped gap (13) is reduced. ·Expanding. This makes it possible to easily obtain the desired gap amount (t) during the processing operation. In addition, it is possible to adjust the clearance only at a necessary portion by advancing and retracting each air cylinder (11) independently. That is, for example, even when a wide portion and a narrow portion are generated in the ring-shaped gap (13) due to the eccentricity between the turntable (3) and the processing container (1), only the wide portion and the narrow portion are formed. It can be adjusted to a predetermined width.

In this embodiment, the width (s) of the gap between the regulating member (25) and the engaging portion (29) and the maximum advance of the divided body (9) (refer to the state shown in FIG. 3). The width (t) of the ring-shaped gap in each is about 1 mm. Therefore,
The width (t) of the ring-shaped gap can be adjusted within the range of 1 mm to 2 mm.

FIG. 4 shows another embodiment of the gap adjusting mechanism (7). This is the inner diameter surface of the ring-shaped gap forming member (30) in which the ring-shaped clearance (13) is attached to the outer diameter surface of the turntable (3) and the inner diameter surface of the processing container (1) so as to face it. The vertical gap is adjusted by vertically moving the rotating disk (3) by an elevating mechanism (not shown). At this time, the outer diameter surface of the turntable (3) and the inner diameter surface of the gap forming member (30) are formed as inclined surfaces in which the cross section of the ring-shaped gap (13) is inclined upward toward the outer diameter side. ing.
As a result, when the raising / lowering mechanism is activated to raise / lower the turntable (3), the width of the ring-shaped gap (13) can be enlarged or reduced. In addition, the clearance adjustment is performed by the rotating disk (3).
The same can be done even when the above is fixed and the gap forming member (30) is moved up and down, or when the cross section of the ring-shaped gap (13) is inclined downward toward the outer diameter side.

A ring-shaped duct (33) having an open upper surface is provided below the turntable (3). The ring-shaped duct (33) is configured by combining an outer member (35) arranged on the outer diameter side and an inner member (37) arranged on the inner diameter side and having an L-shaped cross section, and the outer member (35). The inner surface of the inner member (37) is formed into a continuous smooth curved surface. The outer member (35) is attached to the inner diameter surface of the substrate (19) via the seal ring (39). At this time, the outer member (35), the substrate (19), the Teflon ring (32), and the inner diameter surfaces of the split body (9) at the time of the most advance are positioned on the same vertical surface. Further, the most projecting portion on the inner diameter side of the guide member (17) and the inner diameter surface of the split body (9) at the time of retreating are also positioned on the same vertical plane. At the upper end of the inner member (37), a seal portion (41), for example, a V ring, which is in airtight sliding contact with the lower surface of the rotating disk (3) is mounted.

As shown in FIG. 5, a lower nozzle (43) is connected to the ring-shaped duct (33) in a tangential direction and in the same direction as the rotating direction of the rotating disk (3). From this lower nozzle (43), a high-temperature gas stream, for example, an air stream, supplied from a heating air supply source (not shown) is ejected. In addition,
The lower nozzle (43) has a ring-shaped duct (3
3) Not only at one place but also at multiple places.

Reference numeral (45) in FIG. 1 is a clamp mechanism for fixing the ring-shaped duct (33) to the bottom of the processing container (1). By releasing the clamp mechanism (45), the ring-shaped duct (33) is removed from the processing container (1).
Can be removed from the bottom of the. As described above, the ring-shaped duct (33) is detachably attached to the bottom of the processing container (1), whereby the ring-shaped duct (33) can be easily and surely cleaned.

With the above structure, the particles dropped from the ring-shaped gap (13) are moved in the ring-shaped duct (33) into the same shape as the rotating disk (3) by the tangential air flow supplied from the lower nozzle (43). Turn in the direction. Eventually, the particles move to the outer diameter side in the ring-shaped duct (33) by centrifugal force while swirling, and a smooth continuous curved surface formed at the connecting portion between the outer member (35) and the inner member (37). Guided by and smoothly start the ascending movement. And, this particle has a ring-shaped gap (13).
It is blown up above the turntable (3) through the and goes up while swirling in the processing container (1). At this time, the inner diameter of the processing container (1) is made larger than the maximum diameter of the ring-shaped gap (13), and further, the guide member (17) and the processing container (1).
Since the inner diameter surface of is continuous with a smooth curved surface, the particles that have passed through the ring-shaped gap (13) are efficiently moved to the vicinity of the inner diameter surface of the processing container (1) by centrifugal force, and the ascending motion is started. can do. On the other hand, the particles rolling in the radial direction on the rotating disk (3) receive a swirling air flow when reaching the ring-shaped gap (13) and similarly rise while swirling in the processing container (1). At this time, since a smooth curved surface is formed from the outer peripheral upper surface of the turntable (3) to the inner diameter surface of the guide member (17) and the processing container (1), particles on the turntable (3) are It is possible to smoothly roll over the ring-shaped gap (13) to the inner diameter surface of the processing container (1) and efficiently start the upward movement.

In the above structure, the ring-shaped duct (33) is
By the seal part (41) provided on the upper part of the inner member (37),
Since the rotation disk (3) is sealed, the particles collected in the ring-shaped duct (33) do not leak outside. Therefore, the particles that have fallen from the ring-shaped gap (13) do not leak to the outside regardless of whether the device is operating or stopped, that is, whether the swirling airflow is introduced or not introduced. Moreover, since the inside of the ring-shaped duct (33) is formed into a smooth curved surface, the amount of particles adhering to the inside of the ring-shaped duct (33) is relatively small, and its adhesion is also low. Therefore, even when the clamp mechanism (45) is released and the ring-shaped duct (33) is removed to perform the cleaning operation after the predetermined processing operation is completed, the adhered particles can be easily and surely removed. This ensures that particle contamination is avoided and the GMP problem is completely eliminated.

Further, since the swirling air flow in the same direction as the rotating direction of the rotating disk (3) acts on both the particles dropped from the ring-shaped gap (13) and the particles rolling on the rotating disk (3). It is possible to further activate the flow motion of particles, as compared with the case where only a vertical air flow is applied as in the conventional device.

Further, the air flow supply portion for circulating the air flow through the ring-shaped gap (13) is composed of the ring-shaped duct (33) having a relatively small thickness, which is more compact than that of the conventional device. It has a structure. Therefore, the removal work of the ring-shaped duct (33) and the subsequent cleaning work can be performed easily and quickly.

When the gap adjusting mechanism (7) shown in FIG. 4, that is, the mechanism for adjusting the gap by raising and lowering the rotating disc (3) is adopted, the rotating disc (3) is lifted to move the rotating disc (3). A gap may be formed between 3) and the seal part (41), and particles may leak. So in this case,
In order to ensure the airtightness of the ring-shaped duct (33), it is desirable to make the length of the tongue piece (41a) of the seal part (41) slightly longer than usual. However, the length of the tongue piece (41a) is short,
As a result, even when a slight gap is formed between the rotating disk (3) and the seal portion (41), the ring-shaped duct (3
Most of the particles in 3) are blown to the outer diameter side by centrifugal force, so there is almost no risk of particles leaking out from the gap on the inner diameter side.

A strip-shaped gas jetting portion, for example, an air jetting portion (50) is provided at the average highest position of the fluidized particles on the inner diameter surface of the processing container (1). Below, this air ejection part (5
The structure of (0) will be described with reference to FIGS. 6 and 7.

As shown in FIG. 6, two covers (51) and (51) are attached to the outer diameter surface of the processing container (1) approximately every half circumference. The space surrounded by the cover (51) and the outer diameter surface of the processing container (1) becomes the air flow paths (53) (53).
Upper end nozzles (54) (54) connected to a heating air supply source (not shown) are tangential to one end of both air flow paths (53) (53) and in the same direction as the rotating direction of the rotating disk (3). Are linked towards.

As shown in FIG. 7, an annular groove (55) is formed on the inner surface of the side wall (1a) of the processing container (1) covered with the cover (51). A resistance plate (57) made of a sintered wire mesh is mounted on the inner diameter surface of the side wall (1a) so as to close the annular groove (55). As the resistance plate (57), in addition to the sintered wire mesh, the passage of particles is blocked,
Moreover, a breathable material having a certain breathing resistance can be used. Further, the side wall (1a) is provided with discharge ports (60) communicating with the annular groove (55) and the air flow path (53) at a plurality of positions at equal intervals on the circumference.

With this structure, the upper nozzle (54)
The air flow supplied from the air flow path (53) and the discharge port (6
0), the annular groove (55) and the resistance plate (57) in this order, and jets from the air jetting section (50) into the processing container (1). This air flow blows away particles that tend to adhere to the inner diameter surface of the processing container (1), so that the amount of particles attached can be reduced. Further, since the retention area of the particles disappears by the action of the air flow, the flow motion of the particles is activated and the drying operation is speeded up.

As shown in FIG. 6, a hinge (62) is attached to one end of the cover (51), and an appropriate lock mechanism (not shown) is attached to the other end. Therefore, if the lock mechanism is released, the cover (51) can be opened as shown by the chain double-dashed line, which makes it easy and reliable to clean the air flow path (53) and the discharge port (60). Can be done. In addition, as described above, the air flow path (5
By interposing a resistance plate (57) having a constant ventilation resistance between the processing space (3) and the inner space of the processing container (1), the air flow is generated not only from the vicinity of the upper nozzle (54) but also the air flow. It is possible to uniformly eject from the entire area of the flow path (53).

As shown in FIG. 1, a treatment liquid supply nozzle (for supplying a binder liquid or a coating liquid) between the rotary disk (3) and the air jetting portion (50) in the treatment container (1) ( 65) is provided. At this position, the processing liquid supply nozzle (6
By providing 5), the binder liquid or the like is directly sprayed between the highest position and the lowest position of the fluidized particles, that is, within the flow range of the particles. Therefore, these materials can be evenly distributed over the entire particles in the processing container (1), and efficient coating and granulation operations can be performed.

Further, the air jetting part (5
A powder supply nozzle (67) for supplying the powder for the modified granulation is provided above 0). By supplying an appropriate powder from the powder supplying nozzle (67) during the granulating operation, the powder adheres to the surface of the fluidized particles and the layered modified granulation is performed.

The treatment liquid supply nozzle (65) and the powder supply nozzle (67) may be integrated as proposed by the present applicant in Japanese Patent Laid-Open No. 4-145937. Specifically, as shown in FIG. 8, in the powder supply nozzle (67),
The tip portion is slightly retracted from the tip opening of the powder supply nozzle (67) to house the treatment liquid supply nozzle (65) in the concentric state. Further, a powder supply hopper (71) and an air supply port (73) are provided on the outer diameter surface of the powder supply nozzle (67) on the base end side.
And a ring-shaped member (77) provided with a large number of air outlets (75) at predetermined intervals on the inner diameter surface on the tip side.
Put on. The treatment liquid supply nozzle (65) and the powder supply nozzle (67) have their openings located between the rotary disk (3) and the air jetting section (50), and are tangential to the rotary disk ( It is attached to the side wall of the processing container (1) in the same direction as the rotating direction of 3).

The operation and effect of the above-mentioned integrated treatment liquid supply nozzle (65) and powder supply nozzle (67) will be described below.

While supplying compressed air to the air supply port (73) and ejecting air from the air blowing port (75) of the ring-shaped member (77), the coating liquid or binder liquid is discharged from the treatment liquid supply nozzle (65). To spray. Then, the air blown out from the air blowing port (75) causes a space having a low particle density to appear in front of the powder supply nozzle (67). Therefore, the dispersion liquid supplied from the treatment liquid supply nozzle (65),
The atomized droplets can efficiently come into contact with the fluidized particles, and good coating or granulation without coarse particles or aggregates can be performed.

When the modified granulation is performed, the binder liquid is sprayed from the treatment liquid supply nozzle (65) and the powder is supplied to the powder supply hopper (71). This powder is jetted in a dispersed state from the air blowout port (75) of the ring-shaped member (77) by the air flow supplied from the air supply port (73). Therefore, the powder can be efficiently and quickly attached to the fluidized particles, and the surface of the particles can be subjected to favorable layered modified granulation.

The wettability detecting means (78) for detecting the wettability of the particles has a detecting section (79) between the rotary disk (3) and the air jetting section (50), that is, a flow range of the particles. It is located inside and provided on the side wall of the processing container (1). Accordingly, the wetness of the fluidized particles can be directly detected, so that the wettability can be detected more accurately. The output of the wetness degree detecting means (78) is input to a control device (not shown) that controls a liquid supply pump (not shown) of the treatment liquid supply nozzle (65).

[0050]

According to the device of the present invention, the following various effects can be obtained.

Since the ring-shaped duct is provided immediately below the ring-shaped gap, particles dropped from the ring-shaped gap can be reliably recovered regardless of whether the apparatus is operating or stopped. Moreover, the particles once recovered are surely returned to the space above the rotary disk through the ring-shaped gap without leaking to the outside by the gas flow supplied from the lower nozzle. Therefore, it is possible to reliably avoid particle contamination. In addition, since the gas flow passing through the ring-shaped gap is swirling in the rotation direction of the turntable, swirling force can be applied to the fluidized particles, and the flow motion of the particles can be more activated. .

The ring-shaped clearance can be easily adjusted by moving the divided bodies forward and backward in the radial direction. Further, even when a wide portion or a narrow portion is formed in the ring-shaped gap due to eccentricity between the processing container and the turntable, it is possible to perform precise gap adjustment only at a necessary portion.

By supplying the gas flow toward the inner space of the processing container from the strip-shaped gas jetting portion provided at the average highest position of the fluidized particles, particles adhering to the inner diameter surface of the processing container are reduced. In addition, the retention area of the particles in the processing container disappears, and the flow motion is activated and the drying operation is speeded up.

Based on the above-mentioned effects (1) to (4), the present invention makes it possible to provide an apparatus which is excellent in terms of GMP and which can efficiently perform a particle processing operation such as a granulating operation or a coating operation.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of the device of the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 3 is an enlarged cross-sectional view near a gap adjusting mechanism.

FIG. 4 is a sectional view showing another embodiment of the gap adjusting mechanism.

FIG. 5 is an overall perspective view of a ring-shaped duct.

6 is a cross-sectional view taken along the line BB in FIG.

FIG. 7 is a cross-sectional view of the vicinity of an air ejection portion.

FIG. 8 is a cross-sectional view of a spray nozzle already proposed by the applicant.

[Explanation of symbols]

 1 Processing Container 3 Rotating Disk 5 Raised Member 9 Divided Body 13 Ring-shaped Gap 33 Ring-shaped Duct 41 Sealed Part 50 Gas Jet (Air Jet) 65 Treatment Liquid Supply Nozzle 67 Powder Supply Nozzle 78 Wetness Detection Unit 79 Detection Department

Claims (8)

[Claims] 1. A processing container having a substantially cylindrical shape and a turntable that horizontally rotates in the vicinity of the bottom of the process vessel. A gas flow supplied from outside the system to the lower side of the turntable is controlled by the turntable of the turntable. Particles in the processing container are ejected upward from a ring-shaped gap formed between the outer diameter surface and the inner diameter surface of the processing container facing the outer diameter surface, and the rising gas flow and the rotary motion of the rotary disk synergize with each other. In a device that performs particle processing operations such as granulation and coating by performing rolling flow on the inner surface of the ring-shaped gap, a seal is formed between the lower surface of the turntable and the upper end of the inner peripheral surface on the inner diameter side. A ring-shaped duct is provided which has a seal portion for carrying out the above-mentioned, the inner peripheral surface on the outer diameter side is connected to the inner diameter surface of the processing container, and the portion facing the ring-shaped gap is opened. , Tangential direction and same as the rotating direction of the turntable Particle processing apparatus characterized by lower nozzle is mounted toward the direction. 2. A processing container having a substantially cylindrical shape and a turntable that horizontally rotates in the vicinity of the bottom of the process vessel. A gas flow supplied from below the turntable to the outside of the turntable is supplied to the turntable. Particles in the processing container are ejected upward from a ring-shaped gap formed between the outer diameter surface and the inner diameter surface of the processing container facing the outer diameter surface, and the rising gas flow and the rotary motion of the rotary disk synergize with each other. In a device that performs particle processing operations such as granulation and coating by performing rolling flow on the inner surface of the ring-shaped gap, a seal is formed between the lower surface of the turntable and the upper end of the inner peripheral surface on the inner diameter side. A ring-shaped duct is provided which has a seal portion for carrying out the above-mentioned, the inner peripheral surface on the outer diameter side is connected to the inner diameter surface of the processing container, and the portion facing the ring-shaped gap is opened. , Tangential direction and same as the rotating direction of the turntable The lower nozzle is mounted toward the direction, the portion of the processing container facing the outer diameter surface of the rotating disk is divided at a plurality of positions in the circumferential direction, and arc-shaped divided bodies formed by this division are respectively formed. A particle processing apparatus, which is configured to be movable back and forth in a radial direction independently of a processing container. 3. A processing container having a substantially cylindrical shape and a turntable that horizontally rotates in the vicinity of the bottom of the process vessel. A gas flow supplied from outside the system to the lower side of the turntable is controlled by the turntable. Particles in the processing container are ejected upward from a ring-shaped gap formed between the outer diameter surface and the inner diameter surface of the processing container facing the outer diameter surface, and the rising gas flow and the rotary motion of the rotary disk synergize with each other. In a device that performs particle processing operations such as granulation and coating by performing rolling flow on the inner surface of the ring-shaped gap, a seal is formed between the lower surface of the turntable and the upper end of the inner peripheral surface on the inner diameter side. A ring-shaped duct is provided which has a seal portion for carrying out the above-mentioned, the inner peripheral surface on the outer diameter side is connected to the inner diameter surface of the processing container, and the portion facing the ring-shaped gap is opened. , Tangential direction and same as the rotating direction of the turntable The lower nozzle is attached toward the direction, the outer diameter surface of the rotary disk that constitutes the ring-shaped gap, and the inner diameter surface of the processing container that faces the outer surface are formed into inclined surfaces that are substantially parallel to each other, and A particle processing apparatus configured such that an outer diameter surface and an inclined surface of a processing container are relatively moved in a vertical direction. 4. A processing container having a substantially cylindrical shape and a turntable that horizontally rotates in the vicinity of the bottom of the process vessel. A gas flow supplied from outside the system to the lower side of the turntable is controlled by the turntable. Particles in the processing container are ejected upward from a ring-shaped gap formed between the outer diameter surface and the inner diameter surface of the processing container facing the outer diameter surface, and the rising gas flow and the rotary motion of the rotary disk synergize with each other. In a device for performing particle processing operations such as granulation and coating by tumbling flow, the gas flow toward the internal space of the processing container near the average highest position of the fluidized particles on the inner diameter surface of the processing container. A particle processing apparatus, characterized in that a strip-shaped gas jetting section for supplying the gas is provided. 5. The particle processing apparatus according to claim 1, 2, 3 or 4, wherein a central portion of the rotating disk is raised in a substantially conical shape. 6. The particle processing apparatus according to claim 1, wherein the side wall of the processing container is provided with a processing liquid supply nozzle and a powder supply nozzle. 7. A powder supply nozzle is provided on a side wall of a processing container aiming at a flow range of particles, and the processing liquid supply nozzle is housed in the powder supply nozzle in a concentric state. The particle processing device according to claim 1, 2, 3, or 4. 8. The particle processing apparatus according to claim 1, wherein a wettability detecting means is provided on a side wall of the processing container by arranging a detecting portion within a flow range of the particles. .