JP6639814B2 - Powder processing equipment - Google Patents

Description

  The present invention relates to a granule processing apparatus that performs coating, granulation, mixing, drying, etc. of granules such as pharmaceuticals, foods, agricultural chemicals, and the like, and in particular, a granule having a rotary drum that is driven to rotate around an axis. It relates to a processing device.

  Tablets, soft capsules, pellets, granules, etc. of pharmaceuticals, foods, agricultural chemicals, etc. (hereinafter collectively referred to as powders) are coated with a film or sugar coating, or granulated, BACKGROUND ART In order to perform mixing, drying, and the like, a granular material processing apparatus including a rotary drum that is driven to rotate around its axis is used.

  In this type of powder processing apparatus, the following two methods have been conventionally mainly used to discharge the stored powder from the inside of the rotary drum. The first method is to mount a discharge baffle inside a rotating drum and rotate the rotating drum (for example, see Patent Documents 1 and 2). The second method is to provide a discharge window which can be opened and closed on the outer periphery of the rotary drum, open the discharge window, and discharge the processed particulate material from the discharge window (for example, see “Background of Patent Document 3”). Technology ").

Japanese Patent No. 4064190 JP 2000-354754 A JP 2008-502466 A

  However, when the discharge baffle is used, one rotation of the rotating drum causes the discharge from only the discharge baffle portion. When the discharge window is used, discharge can be performed only once for one rotation of the rotary drum. Therefore, in any case, it takes a very long time to discharge the whole amount of the granular material contained in the rotating drum.

  SUMMARY OF THE INVENTION In view of the above circumstances, it is a technical object of the present invention to discharge a whole amount of a granular material contained in a rotating drum of a granular material processing apparatus in a short time.

  A powder and granular material processing apparatus according to the present invention devised to solve the above-described problem has a powder and granular material provided with a rotating drum in which a powder to be processed is housed and rotated around its axis. In the processing apparatus, the rotating drum can be divided into a pair of divided bodies by a dividing part, and the pair of divided bodies can be switched between a combined state and a divided state by relative movement, and the pair of divided bodies When the is in a divided state, the granular material contained in the rotary drum is discharged from the divided portion by its own weight.

  According to this configuration, since the rotating drum can be divided into a pair of divided bodies, the inner diameter of the divided portion can be increased. Therefore, it is possible to quickly discharge the granular material through the dividing portion. That is, according to the granular material processing apparatus of the present invention, it is possible to discharge the entire amount of the granular material accommodated in the rotating drum in a short time.

  In addition, the discharge amount of the granular material can be controlled by adjusting the distance between the divided parts in the divided state and by the presence or absence of rotation of the rotating drum in the divided state. For this reason, even if the granular material processing apparatus of the present invention is newly introduced into the manufacturing process, it is not necessary to change the processing amount of the next process by controlling the discharge amount of the granular material in accordance with the next process. It is possible to

  In the above configuration, the division may be formed along a plane that intersects the axis.

  For example, when the dividing portion is formed along a plane parallel to the axis, if the rotating drum is not at a specific rotation direction position, the granular material may be difficult to be discharged by its own weight even in the dividing state. On the other hand, with this configuration, it is possible to discharge the granular material by its own weight when it is divided, regardless of the rotational direction position of the rotary drum.

  In the above configuration, the axis may be inclined with respect to a horizontal line.

  With this configuration, it is easy to adopt a configuration in which the granular material is discharged by its own weight in the divided state.

  ADVANTAGE OF THE INVENTION According to this invention, the whole granular material accommodated in the rotating drum of the granular material processing apparatus can be discharged | emitted in a short time.

It is an outline sectional view of a granular material processing device concerning an embodiment of the present invention. FIG. 3 is a schematic axial sectional view showing the rotating drum in a united state. FIG. 3 is a schematic axial sectional view showing the rotary drum in a divided state. It is a schematic radial sectional view of the large diameter part which shows the modification of the division part of a rotary drum. It is a schematic axial sectional view showing a modification of a rotating drum. It is a schematic axial sectional view showing a modification of a rotating drum.

  FIG. 1 is a schematic sectional view of a granular material processing apparatus according to an embodiment of the present invention. The granular material processing apparatus according to this embodiment includes a rotating drum 1 in which a granular material to be processed is housed, and is driven to rotate around an axis A inclined with respect to a horizontal line, and a casing that houses the rotating drum 1. 2 is provided. The interior of the casing 2 is partitioned into three spaces (a first space S1, a second space S2, and a third space S3) by the rotating drum 1, the first partition 2a, and the second partition 2b.

  As shown in FIG. 2, the rotary drum 1 has one end 1a located on the upper side of the slope along the axis A, the other end 1b located on the lower side of the slope, and one end 1a and the other end 1b. And a peripheral wall portion 1c to be formed. The peripheral wall 1c is not provided with a ventilation portion (porous portion) for air supply and exhaust, and includes an opening 1d provided at one end 1a of the rotary drum 1 and a ventilation portion 1e provided at the other end 1b. The air is supplied to and exhausted from the rotary drum 1 via the.

  The peripheral wall portion 1c has a large-diameter portion 1f having a maximum diameter, a first reduced-diameter portion 1g that decreases in diameter from the large-diameter portion 1f toward one end 1a, and a large-diameter portion 1f from the large-diameter portion 1f toward the other end 1b. And a second reduced diameter portion 1h. An annular member 1i is provided on the outer periphery of the large diameter portion 1f. The large diameter portion 1f has a polygonal shape such as a nine-sided cross section (radial cross section) (see FIG. 4A).

  As shown in FIG. 1, a drive shaft 3 for rotating the rotary drum is connected to the other end 1b of the rotary drum 1. The drive shaft 3 is rotatably supported by the second partition 2b via bearings 4a and 4b. A rotation drive mechanism for rotating the drive shaft 3 is disposed in the third space S3 of the casing 2 (not shown).

  An air supply duct 2c communicating with the first space S1 is attached to an upper portion of the casing 2. Further, the casing 2 has an exhaust member (not shown) disposed in the second space S2 and an exhaust duct communicating with the inside of the rotary drum 1 via a ventilation portion 1e of the other end 1b of the rotary drum 1. 2d is mounted on top. Further, the casing 2 is provided with a powder / particle discharge chute 2e communicating with the first space S1 below the first space S1. A lid (not shown) is attached to the lower end opening 2f of the powder discharge chute 2e when not in use.

  As shown in FIGS. 2 and 3, the rotating drum 1 can be divided into a pair of divided bodies (a first divided body 1k and a second divided body 11) by a dividing part 1j. The division part 1j is formed along a plane intersecting the axis A. The first divided body 1k and the second divided body 11 can be switched between a combined state and a divided state by relative movement. When the first divided body 1k and the second divided body 11 are in the divided state, the powder and granular material accommodated in the rotary drum 1 is discharged from the divided part 1j by its own weight.

  More specifically, the dividing portion 1j is formed along the plane perpendicular to the axis A at the center of the large diameter portion 1f and the annular member 1i in the direction of the axis A. The annular member 1i can be divided into a first annular member 1i1 and a second annular member 1i2 at a dividing portion 1j. The second annular member 1i2 forms a labyrinth seal with the first partition 2a.

  A plurality of cylinders 1m are attached to the second annular member 1i2 at equal intervals in the circumferential direction. The distal ends of the rods 1m1 of these cylinders 1m are attached to the first annular member 1i1.

  When the cylinder 1m is retracted, the divided portion 1j is in contact, and the first divided body 1k and the second divided body 11 are in a united state (a state shown in FIG. 2). When the cylinder 1m extends, the first divided body 1k moves away from the second divided body 11 by linear movement along the direction of the axis A. At this time, the dividing part 1j separates, and the first divided body 1k and the second divided body 11 are divided (the state shown in FIG. 3).

  At the time of processing the granular material, as shown by a solid line in FIG. 1, the cylinder 1m is contracted, and the first divided body 1k and the second divided body 11 are brought into a united state. In this state, the rotary drum 1 containing the granular material is rotated. At this time, the processing liquid is sprayed onto the powder from a nozzle (not shown). Further, the processing gas is supplied from the air supply duct 2c to the first space S1 in the casing 2. This processing gas flows into the rotating drum 1 through the opening 1d of the one end 1a, passes through the inside of the granular material layer, and then flows out of the rotating drum 1 through the ventilation part 1e of the other end 1b. I do. Then, the processing gas is exhausted from the exhaust duct 2d to the outside of the casing 2 via an exhaust member (not shown).

  After the processing of the granular material is completed, as shown by a two-dot chain line in FIG. 1, the cylinder 1m is extended, and the first divided body 1k and the second divided body 11 are brought into a divided state. Then, in FIG. 3 (a cross section taken along a vertical plane including the axis A), the lower side of the first reduced diameter portion 1g and the lower side of the second reduced diameter portion 1h of the rotary drum 1 are inclined with respect to the horizontal line. The granular material contained in the rotating drum 1 moves toward the dividing portion 1j by its own weight. Then, the granular material is discharged from the dividing portion 1j to the outside of the rotary drum 1 by its own weight. The granules pass through the inside of the granules discharge chute 2e by their own weight, and are discharged out of the casing 2 from the lower end opening 2f (the lid is removed when the granules are discharged).

  The following effects can be obtained with the powdery material processing apparatus of the present embodiment configured as described above.

  Since the rotating drum 1 can be divided into the first divided body 1k and the second divided body 11, the inner diameter of the divided portion 1j can be increased. Therefore, it is possible to quickly discharge the granular material via the dividing portion 1j. That is, according to the granular material processing apparatus of the present embodiment, it is possible to discharge the entire amount of the granular material accommodated in the rotary drum 1 in a short time.

  In addition, the discharge amount of the granular material can be controlled by adjusting the distance between the divided portions 1j in the divided state and by the presence or absence of rotation of the rotary drum 1 in the divided state. For this reason, even when the granular material processing apparatus of the present embodiment is newly introduced into the manufacturing process, by controlling the amount of the granular material discharged in accordance with the next process, it is possible to change the processing amount in the next process. It can be unnecessary.

  In addition, by washing the rotating drum 1 with washing water and then setting the divided state, the washing water can be quickly drained through the dividing portion 1j. In addition, by setting the divided state, it is possible to easily check the inner surface of the rotary drum 1 and the baffle after cleaning. Further, by setting the divided state, it is possible to directly clean the inner surface and the baffle of the rotating drum 1 at a close distance from the cleaning nozzle provided around the dividing portion 1j outside the rotating drum 1.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the technical idea. For example, in the above-described embodiment, the dividing portion 1j is formed along a plane intersecting with the axis A, but is formed along a plane B including the axis A as shown in FIG. It may be formed along a plane parallel to the axis A. As shown in FIG. 4A, when the radial cross section is polygonal, it is preferable that the dividing portion 1j is formed so as to pass through at least one vertex of the polygon. In this case, as shown in FIG. 4 (B), when the first divided body 1k and the second divided body 11 are divided by the linear movement along the horizontal direction, the vertex through which the dividing part 1j passes is downward. If the position of the rotating drum 1 in the rotating direction is adjusted as described above, the powder or granular material is easily discharged by its own weight.

  In the above embodiment, the axis A of the rotating drum 1 is inclined with respect to the horizontal line. However, as shown in FIG. 5, the axis A of the rotating drum 1 may be along the direction of the horizontal line. In the rotary drum 1 of this type, as shown in FIG. 5 (a cross section taken along a vertical plane including the axis A), the large-diameter portion 1 f has a certain length along the direction of the axis A, and the lower portion also has a lower portion. Along the direction of the horizon. Therefore, as shown in FIG. 5 (B), even if the first divided body 1k and the second divided body 11 are divided by the linear movement along the direction of the axis A, the granular material in the rotary drum 1 can be divided. Is hardly discharged by its own weight. For this reason, as shown in FIG. 5C, it is preferable to further add an operation of rotating (tilting) the first divided body 1k and the second divided body 11. In this case, since the lower part of the large-diameter portion 1f is inclined with respect to the horizontal line, the granular material in the rotary drum 1 is easily discharged by its own weight.

  Further, in the above embodiment, the first divided body 1k and the second divided body 11 of the rotary drum 1 are completely separated by the extension operation of the cylinder 1m. However, as shown in FIG. The upper part of the part 1j is connected by a hinge mechanism 1n, and as shown in FIG. 6B, the first divided body 1k and the second divided body 11 are rotated (inclined) about the hinge mechanism 1n to form a first part. The divided body 1k and the second divided body 11 may be in a divided state.

1 Rotary Drum 1j Division 1k First Division 11 Second Division A Axis

Claims (3)

In the powder and particle processing apparatus, a powder to be processed is housed therein, and a rotary drum that is driven to rotate around its axis and a casing that houses the rotary drum,
The rotating drum has, along the direction of the axis, one end, the other end, and a peripheral wall portion that connects the one end and the other end,
The rotating drum can be divided into a pair of divided bodies at a dividing portion,
Switching means for switching between the combined state and the divided state by relatively linearly moving the pair of divided bodies is provided,
The switching means is attached to an outer peripheral portion of the rotating drum,
When the pair of divided bodies are in the divided state, the inner surface of the divided body has a portion that is inclined downward toward the divided portion, and the powder accommodated in the rotary drum from the divided portion by this portion. Granules are discharged by their own weight ,
The said granular material processing apparatus characterized by the above-mentioned division part being formed over the perimeter of the said peripheral wall part .   2. The apparatus according to claim 1, wherein the dividing portion is formed along a plane intersecting the axis. 3. The granular material processing apparatus according to claim 1, wherein the axis is inclined with respect to a horizontal line.

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