JP2011245107A - Powder removing device for solid - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently remove a powder adhering to the surface of a solid without using a spiral brush.SOLUTION: In the powder removing device for tablets, a cylindrical body 5 having its both end faces opened and forming a plurality of holes 50 through which the powder passes in the entire peripheral surface is supported axially rotatably around the centerline in the interior of a machine body 1 having a tablet receiving opening 32 at one end, a tablet discharge opening 41 at the other end, a powder suction opening 28 at the lower end communicating with a suction device 9, with one opened end face 51 made to communicate with the receiving opening 32 and the other opened end 52 made to communicate with the discharge opening 41, and a rotatively driving mechanism 8 axially rotating the cylindrical body 5 is connected with the cylindrical body 5. A spiral ridge 6 to sequentially feed the tablets introduced into the cylindrical body 5 from the one opened end face 51 toward the other opened end face 52 is provided on the inside peripheral surface of the cylindrical body 5, and a nozzle 7 provided with a plurality of air ejection holes 70 ejecting air from a pressure air source 73 to the tablets is arranged in the internal space of the cylindrical body 5.

Description

  The present invention relates to a solid-state powder removing device used for removing powder adhering to the surface of a solid substance such as medicines and health foods.

  In general, solids such as tablets and capsules such as medicines are manufactured by crushing and mixing multiple types of raw materials, and if they are tablets, they are manufactured by press molding with a tableting machine. It is manufactured by filling and solidifying with a machine. A solid powder removing device is provided adjacent to the tableting machine and the capsule filling machine, and an inlet of the solid powder removing device is connected to the solid material outlet of the tableting machine and the capsule filling machine. The solid material is introduced into the solid material dust removing device from the receiving port, and the powder adhering to the surface is removed during the manufacturing process of the solid material.

  2. Description of the Related Art Conventionally, as a powder removal apparatus for tablets, there is a structure in which screw blades are loaded inside a cylindrical body having a large number of holes formed on the entire circumferential surface. The tablets introduced into the cylindrical body are fed forward with the rotation of the screw blades and led out from the cylindrical body, but the powder that adheres to the surface of the tablets falls off as the tablets roll during this forward feeding process. To do. The powder passes through the hole of the cylindrical body and is sucked and collected by the suction device.

  Since the above-mentioned tablet powder removing device is a system in which the powder adhering to the surface of the tablet is naturally dropped by rolling in the cylindrical body, the powder removal efficiency is poor, and this improves the cylindrical body. There are also nozzles having a plurality of air injection holes arranged on the outside. In this type of tablet powder removal device, air from a pressurized air source is jetted from the nozzle into the cylindrical body, so that the powder adhering to the surface of the tablet is forcibly blown off, and the powder removal efficiency is improved.

  However, since the nozzle is arranged outside the cylindrical body, the air blown from the nozzle hits the cylindrical body and the screw blades inside the cylindrical body, and the pressure is weakened. In addition to the structure in which the screw blades are loaded inside the cylindrical body, there is a problem that it is not easy to clean the cylindrical body after the powder removal treatment.

  In order to solve the above problem, the applicant has recently proposed a tablet powder removing apparatus having a structure in which a rotating body having a spiral brush is loaded inside a cylindrical body instead of a screw blade (for example, Patent Documents). 1). In this tablet powder removal device, the powder adhering to the tablet surface is wiped off with a spiral brush and forcibly removed, so the powder removal efficiency is high and the powder adhering to the tablet surface is reliably removed. The

JP 2006-298526 A

  However, in the tablet powder removal device using the above spiral brush, when a herbal medicine such as Chinese herbal medicine is subjected to a powder removal process, the herbal odor or pigment adheres to the spiral brush and the spiral brush is washed. However, there is a problem that the odor and pigment cannot be completely removed and cannot be used for the powder removal of other types of tablets. Moreover, since a spiral brush uses a brush with a small bristle diameter, there is a possibility that the bristle is mixed as a foreign substance in the product by dropping or cutting.

  The present invention has been made by paying attention to the above-mentioned problem, and is capable of efficiently removing powder adhering to the surface of a solid substance such as a tablet without using a spiral brush. The purpose is to provide.

  The solid material degreasing device according to the present invention is for removing powder adhering to the surface of a solid material, and is a receiving port into which a solid material is charged at one end, and a solid that has been dedusted at the other end. Inside the machine body, which has a discharge port for discharging things, and a powder suction port communicating with the suction device at the bottom, a cylindrical body in which a large number of holes are formed where both end surfaces are opened and powder passes through the entire peripheral surface. One open end surface is connected to the receiving port, and the other open end surface is connected to the discharge port so that the shaft can be rotated about the center line, and the cylindrical body is rotated about the cylindrical body. The rotational drive mechanism to be connected is connected. The inner circumferential surface of the cylindrical body is provided with a spiral strip for sequentially feeding the solid matter introduced into the cylindrical body from one open end surface toward the other open end surface. A nozzle having a plurality of air injection holes for injecting air from the pressure air source toward the solid is disposed.

  In the above-described solid material dedusting apparatus, when a solid material such as a tablet is introduced from the receiving port, the solid material is introduced into the cylindrical body from one open end surface of the cylindrical body. The cylindrical body rotates about the axis, and the solid material is fed forward in the direction in which the spiral strip advances in the cylindrical body. Since the air injected from the air injection hole of the nozzle directly acts on the solid material, the powder adhering to the surface of the solid material is blown off in the forward feeding process. The powder removed from the surface of the solid matter is discharged to the outside through the hole of the cylindrical body, and is sucked from the powder suction port and collected by the suction device. The solid matter that has been powdered is led out from the other open end surface of the cylindrical body, and discharged from the discharge port to the outside.

In a preferred embodiment of the present invention, the spiral strip is formed by detachably fixing a spiral coil to the inner peripheral surface of the cylindrical body.
In this embodiment, the spiral strip can be easily formed on the inner peripheral surface of the cylindrical body using the spiral coil, and after the powder removal treatment, the spiral coil is removed from the cylindrical body, and the coil and The cylindrical body can be cleaned individually.

  Various types of spiral coils are conceivable, but it is desirable to use a coil that is covered with a soft synthetic resin tube so that solid matter is not damaged by contact with the coil.

In a preferred embodiment of the present invention, the nozzle is supported at the base end by the machine body and is inserted into the internal space of the cylindrical body from one open end surface of the cylindrical body.
In this embodiment, the nozzle can be easily installed and removed from the cylindrical body, and the nozzle can be prevented from being clogged with powder by washing the nozzle.

In a further preferred embodiment of the present invention, below the receiving port, a solid guide plate in which a large number of holes through which powder passes is formed is arranged in an inclined state toward the open end surface of the cylindrical body, Below the guide plate, a powder suction port communicating with the suction device is located.
In this embodiment, when a solid material is charged into the receiving port, the powder attached to the surface of the solid material due to collision with the guide plate at the time of charging drops, so prior to the powder removal treatment in the cylindrical body, Part of the powder adhering to the surface of the solid material is removed, and the powder removal efficiency is increased.

The rotational drive mechanism may be in various forms, but in a preferred embodiment, the motor, a drive gear driven by the motor, and an outer peripheral surface fitted with the outer periphery of the one end of the cylindrical body are driven on the outer peripheral surface. It is comprised with the drive ring provided with the gear part which meshes with a gear.
According to this embodiment, the cylindrical body can be easily rotated about the center line. Further, if the engagement between the drive gear and the gear portion of the drive ring is removed, the cylindrical body can be taken out, and the cylindrical body can be easily cleaned.

  According to the present invention, since the powder adhering to the surface of the solid material such as a tablet is blown away by air sprayed from the nozzle without using the spiral brush, the herbal medicine is applied to the spiral brush as in the conventional example. There is no risk of odors and pigments adhering to the product, or brush hair mixed as foreign matter in the product. In addition, since solids such as tablets are sequentially fed by a spiral strip provided on the inner peripheral surface of the cylindrical body, and the nozzle is positioned in the internal space of the cylindrical body, the air injected from the nozzle is solid without being blocked. It acts directly on the surface of the object and can effectively remove the powder adhering to the surface.

1 is a front view of a tablet powder removing apparatus according to an embodiment of the present invention. It is a top view of the powder removal apparatus of the tablet which is one Example of this invention. It is sectional drawing which follows the AA line of FIG. It is sectional drawing which follows the BB line of FIG. It is a disassembled perspective view of a cylindrical body.

  1 and 2 show the appearance of a tablet powder removing apparatus according to an embodiment of the present invention, the present invention is not limited to tablets, and can be applied to powder removal of various solid materials. The tablet powder removing apparatus in the illustrated example is configured such that the machine body 1 is horizontally supported on a stand 10 movable on a floor surface. The stand 10 includes four legs 12 extending in four directions at the lower end portion of the column 11, and casters 13 are attached to the tips of the legs 12. The height of the column 11 can be adjusted. By rotating the knob 14 and loosening the screw 16, the support shaft 15 is moved up and down to adjust the protruding length.

  The machine body 1 is entirely made of stainless steel, and includes a box-shaped powder removal processing unit 2 and a tablet receiving unit that is detachably attached to the front wall portion 22 and the rear wall portion 23 of the powder removal processing unit 2 with screws. 3 and a tablet discharge unit 4. The powder removal processing unit 2 is a part that performs powder removal processing on the received tablet. As shown in FIGS. 3 and 4, the front wall 22, the rear wall 23, and the bottom plate facing the side walls 21, 21 facing each other. The hollow chamber 20 surrounded by the portion 27 is provided inside. The upper surface of the hollow chamber 20 is open, and a cover plate 24 that is opened at the time of internal inspection is put on the opening.

  The front wall portion 22 is provided with an introduction port 25 for introducing the tablet received by the tablet receiving portion 3 into the powder removal processing portion 2. The introduction port 25 faces one open end face 51 of a porous cylindrical body 5 described later and communicates with the inside of the cylindrical body 5. The rear wall portion 23 is provided with a lead-out port 26 for leading the tablet that has been powder-removed by the powder-removal processing portion 2 to the tablet discharge portion 4. The outlet 26 faces the other open end surface 52 of the cylindrical body 5 and communicates with the inside of the cylindrical body 5. In the central part of the bottom plate part 27, there is opened a powder suction port 28 for sucking and discharging the powder forcibly removed from the tablet. A suction pipe 29 is connected to the suction port 28, and the suction pipe 29 is connected to a suction device 9 having a dust collection mechanism via a suction hose 91.

  The tablet receiving unit 3 is configured such that a hopper unit 31 is detachably mounted on the dust collecting unit 30. The hopper portion 31 is open at the top and bottom, and the open portion on the upper surface constitutes a tablet receiving port 32 into which tablets are put. The tablet receiving port 32 can be opened and closed by a cover plate 33. A guide plate 34 is detachably mounted on the open portion of the lower surface of the hopper 31. A large number of holes 35 through which powder can pass are formed in the guide plate 34. The guide plate 34 is inclined toward the powder removal processing unit 2 in order to guide the tablet to the introduction port 25 of the powder removal processing unit 2, and the opening on the upper surface of the dust collecting unit 30 covers the lower surface of the guide plate 34. It has been. On the lower surface of the dust collecting unit 30, a powder suction port 36 for sucking and discharging the powder that has naturally dropped from the tablet is opened. A suction pipe 37 is connected to the suction port 36, and the suction pipe 37 is connected to the suction pipe 29 of the powder removal processing unit 2.

  The tablet discharge part 4 is a cap-like one opened on one side, and is provided with a tablet discharge port 41 for discharging the powder-removed tablet to the outside on the lower surface. Also, a rear end portion of a nozzle 7 to be described later is attached to the rear surface, and an air introduction pipe 71 connected to the proximal end portion of the nozzle 7 is connected to a pressure air source 73 via an air supply tube 72. ing.

  In the hollow chamber 20 of the powder removal processing unit 2, a stainless steel tubular body 5 whose both end faces are open, one open end face 51 is the inlet 25 and the other open end face 52 is the outlet 26. , They are installed in a state where they face each other. As shown in FIG. 5, the cylindrical body 5 has a large number of holes 50 having a diameter through which the powder removed from the tablet can pass. A synthetic resin drive ring 53 is detachably fitted to the end of the cylindrical body 5 on the tablet receiving portion 3 side, and a metal support ring 54 is detachably fitted to the end of the tablet discharge portion 4 side. ing.

  The drive ring 53 is integrally provided with a gear portion 55 whose outer peripheral surface is a tooth surface and an annular portion 56 whose outer peripheral surface is flat. The annular portion 56 of the drive ring 53 is provided with four support rollers 81 provided on the front wall portion 22 of the powder removal processing portion 2, and the outer peripheral surface of the support ring 54 is provided with two support rollers provided on the rear wall portion 23. The cylindrical body 5 can be axially rotated around the center line c.

  The gear portion 55 of the drive ring 53 constitutes a rotational drive mechanism 8 that rotates the cylindrical body 5 about the center line c, and meshes with a drive gear 84 that is driven by a motor 83 of the rotational drive mechanism 8. . The motor 83 and the drive gear 84 are disposed inside a machine box 80 provided adjacent to the powder removal processing unit 2. The tooth surface on the outer periphery of the drive gear 84 protrudes from the through hole 21 a provided in the side wall portion 21 of the powder removal processing unit 2 and meshes with the gear portion 55 of the drive ring 53.

  On the inner peripheral surface of the cylindrical body 5, a spiral strip 6 is provided over the entire length for sequentially feeding the tablet introduced into the cylindrical body 5 from one open end surface 51 toward the other open end surface 52. Yes. The spiral strip 6 of this embodiment is formed by removably fitting and fixing a spiral metal coil 61 having substantially the same diameter as the inner diameter of the cylindrical body 5 to the inner peripheral surface of the cylindrical body 5. Is formed. The helical coil 61 is covered with a soft synthetic resin tube such as a silicone resin, and prevents the tablet from being damaged by contact with the helical coil 61.

  In the internal space of the cylindrical body 5, a tubular nozzle 7 is disposed so as to be positioned on the center line c of the cylindrical body 5. A plurality of air injection holes 70 are formed on the outer peripheral surface of the nozzle 7. Each air injection hole 70 is formed on the lower surface side of the outer peripheral surface so that air is injected toward the tablet located below. The nozzle 7 has such a length that the tip portion reaches a position near the open end surface 51 of the cylindrical body 5. The rotational speed of the cylindrical body 5 can be adjusted by adjusting the speed of the motor 83, and the suction force acting on each suction port 28, 36 can be adjusted by the opening degree of the flow rate adjusting damper, etc. The injection air pressure 7 can be adjusted by the opening of the valve.

  In the above-described tablet powder removing apparatus, when an appropriate amount of tablets is sequentially loaded from the receiving port 32 of the tablet receiving unit 3, the loaded tablets are guided onto the guide plate 34 by the hopper unit 31. Part of the powder adhering to the surface of the tablet due to the collision with the guide plate 34 falls off, passes through the hole 35 of the guide plate 34 and is sucked into the suction port 36, passes through the suction pipe 37 and the suction hose 91, and the suction device 9. To be recovered.

  The tablet rolls down along the inclination of the guide plate 34, passes through the inlet 25 of the powder removal processing unit 2, and is introduced into the cylindrical body 5 from one open end surface 51 of the cylindrical body 5. The cylindrical body 5 has an annular portion 56 of the drive ring 53 at one end thereof supported by the four support rollers 81 and a support ring 54 at the other end thereof supported by the two support rollers 82 so as to be freely rotatable. When the motor 83 of the rotational drive mechanism 8 is driven, the rotational driving force is transmitted to the cylindrical body 5 via the drive gear 84 and the gear portion 55 of the drive ring 53, and the cylindrical body 5 moves in a predetermined direction. The shaft rotates at a predetermined rotation speed.

The tablet introduced into the cylindrical body 5 is fed forward in the spiral direction by the spiral strip 6 while rolling on the inner peripheral surface of the cylindrical body 5. The air jetted from the air jet hole 70 of the nozzle 7 directly acts on the tablet, and the powder adhering to the tablet surface is blown off in the forward feeding process. The powder removed from the surface of the tablet passes through the hole 50 of the cylindrical body 5, is sucked from the powder suction port 28, and is collected by the suction device 9 through the suction pipe 29 and the suction hose 91.
The tablet after powder removal is led out from the other open end face 52 of the cylindrical body 5 to the tablet discharge part 4 through the outlet 26 of the powder removal processing part 2 and discharged to the outside through the discharge port 41.

  In order to clean the tablet powder removing device after the above powder removal processing, the powder removal processing unit 2, the tablet receiving unit 3 and the tablet discharging unit 4 are disassembled, and the tablet receiving unit 3 includes the hopper unit 31 and the dust collecting unit 30. And decompose. Further, the nozzle 7 is removed from the tablet discharge unit 4, the cylindrical body 5 is taken out from the powder removal processing unit 2, and the spiral coil 61 is extracted from the cylindrical body 5. In this way, the constituent members are disassembled into pieces and washed, and then the tablet dust removing apparatus is assembled in the reverse procedure.

DESCRIPTION OF SYMBOLS 1 Airframe 5 Cylindrical body 6 Spiral strip 7 Nozzle 8 Rotation drive mechanism 9 Suction device 28 Suction port 32 Receiving port 34 Guide plate 35 Hole 36 Suction pipe 41 Discharge port 50 Hole 51, 52 Open end face 70 Air injection hole 73 Pressure air source

Claims (6)

  It is a powder removing device for removing powder adhering to the surface of a solid material, where a solid material is introduced into one end, a discharge port for discharging the solid material removed at the other end, and a lower portion Inside the machine body that has a powder suction port that communicates with the suction device, a cylindrical body in which a large number of holes are formed in which both end surfaces are open and powder passes through the entire peripheral surface. The other open end face is connected to the discharge port so as to be axially rotatable around the center line and is connected to a rotary drive mechanism for rotating the cylindrical body to the cylindrical body. The inner surface of the cylindrical body is provided with a spiral strip for sequentially feeding the solid material introduced from one open end surface into the cylindrical body toward the other open end surface, and is provided in the internal space of the cylindrical body. Is a nozzle with multiple air injection holes that inject air from a pressure air source toward solids Powder removing apparatus arranged in made solid.   The said helical strip is a solid-state powder removal apparatus described in Claim 1 formed by fixing a helical coil to the internal peripheral surface of a cylindrical body so that removal is possible.   The solid-state powder removal device according to claim 2, wherein the spiral coil is covered with a soft synthetic resin tube.   2. The solid powder removing apparatus according to claim 1, wherein a base end portion of the nozzle is supported by the machine body and is inserted into an inner space of the cylindrical body from one open end surface of the cylindrical body.   A solid guide plate in which a large number of holes through which powder passes is formed is disposed below the receiving port in an inclined state toward the open end surface of the cylindrical body, and a suction device is provided below the guide plate. The solid powder removing apparatus according to claim 1, wherein a suction port for communicating powder is located.   The rotational drive mechanism includes a motor, a drive gear driven by the motor, and a drive ring including a gear portion that is fitted on the outer periphery of one end portion of the cylindrical body and meshes with the drive gear on the outer peripheral surface. The solid powder removal apparatus according to claim 1.

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