JPH0313153B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a conveying device for solid objects such as tablets and capsules.

[Prior art]

In general, tablets, capsules, etc. are easily damaged and their surfaces are easily scratched, so special consideration is required when transporting them.

For this reason, the applicant has developed a conveying device for tablets, capsules, etc. that does not damage the tablets, capsules, etc. and increases the surface gloss during conveyance, and has filed an application for this (Japanese Patent Publication No. 56-3291 (Japanese Patent Publication No. 56-3291) −61884)).

This conveying device is made up of a helical coil that is wound tightly against the inner wall of a cylindrical hollow tube over the entire length of the tube, and has an inlet at one end and an outlet at the other end. A brush that rotates along the entire length of the helical coil and lightly touches the inner diameter of the helical coil is rotatably arranged inside the helical coil, and the brush is rotated by a drive device connected to one end of the rotating shaft and fed into the receiving port. This is a conveying device for tablets, capsules, etc., configured to convey tablets, capsules, etc. through a conveying pipe and discharge them from a spout.

[Problem that the invention seeks to solve]

However, in the conventional solid material conveying device described above, the brush and helical conveyor for tablets, etc.
Due to the contact of the coils, the tablets, etc. may be polished more than necessary, and especially when the conveyor pipe is arranged with an upward slope, the weight of the capsules, tablets, etc. may be reduced due to the cooperative action of the brush and the helical coil. This has the problem of not only acting against the force and making the tablets, etc. unnecessarily small, but also wasting the powder produced by polishing.

The present invention has been made in view of the above-mentioned points, and by adding the conveying force generated by the air flow to the conveying force generated by the cooperation between the brush and the helical coil, it is possible to create a solid state that does not polish the tablets, etc. more than necessary. The purpose of the present invention is to provide a device for transporting objects.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a solid material conveying device inside a cylindrical tube having an input port for introducing the solid material at one end and a discharge port for discharging the solid material at the other end. , a helical coil tightly wound on the inner wall over its entire length is disposed, and a rotary brush with brush fibers radially implanted on a rod-shaped shaft member is rotatably arranged, and the rotation of the rotary brush is Therefore, in a solid material conveying device that transports solid materials inputted from an input port toward a discharge port, a perforated cylinder having a wall provided with a large number of holes with a shape and size that does not allow the solid materials to pass through is communicated with the former discharge port, and A suction device that is provided with an outer cylinder that is inclined downward and that encloses the perforated cylinder, and that sucks the air inside the cylinder into the outer cylinder and generates an air flow in the cylinder of the conveying device from the input port to the discharge port. The configuration includes the following.

Further, an opening/closing lid is provided at the tip of the porous tube, and the opening/closing lid is normally biased in the closing direction by a weight centered on the shaft, and opens by the weight when a predetermined amount of solids to be discharged from the discharge port has accumulated. It was configured as follows.

[Effect]

If the solid material conveying device is configured as described above,
Since airflow is applied in the direction of conveying the solids in the cylinder, the conveyance force due to this airflow is added to the conveyance force provided by the cooperative action of the brush and helical coil, and the solids are easily conveyed. The solid material is not polished more than necessary, and the tablets and the like are not unnecessarily reduced in size, and the amount of drug powder produced by polishing can be greatly reduced.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view showing the overall structure of a solid material conveying device according to this embodiment.

The solid material conveying device according to this embodiment has a helical coil 3 and a rotating brush 5 inserted into a cylindrical tube 1 having an input port 1a and a discharge port 1b at both ends, and a helical coil 3 and a rotary brush 5. To the discharge pipe 7 protruding from the
A perforated pipe 71 and an outer cylinder 73 enclosing the perforated cylinder 71 are provided, a suction device 9 for sucking air from inside the cylinder 1 is attached to the outer cylinder 73, and an opening/closing lid 11 is attached to the tip opening of the perforated cylinder 71. It is set up and configured.

Next, each component of this embodiment will be explained in detail.

A cylindrical tube 1 is arranged diagonally, and near its lower end is formed an input port 1a for inserting solid objects such as tablets and capsules, and near its upper end is formed to discharge solid objects such as tablets and capsules. outlet 1b
is formed. An input hopper 1c is attached to the input port 1a to facilitate input of solid substances such as tablets and capsules. A discharge pipe 7 projecting from the discharge port 1b is attached to the discharge port 1b. The upper and lower ends of this cylinder 1 are used to seal both ends of the cylinder 1, and to form a shaft member 5 of a rotating brush 5, which will be described below.
Bearings 1d and 1d that support a are attached.

The helical coil 3 is in close contact with the inner wall of the cylinder 1,
It is fixed to the cylinder 1. The cross-sectional shape of this helical coil 3 is as shown in Fig. 2 a, b, and c.
It may be of any shape, such as circular or chevron-shaped, as long as it is in close contact with the inner wall of the cylinder 1 and can convey the solid matter in cooperation with the brush.

As shown in FIG. 3, the rotating brush 5 is constructed by having a large number of brush fibers 5b radially implanted over the entire length of a rod-shaped shaft member 5a, and its outer diameter is approximately the same as the inner diameter of the helical coil 3. equal. A motor 5c for rotating the shaft member 5a relative to the cylinder 1 is connected to the shaft member 5a. Shaft member 5
a is rotatably supported by bearings 1d, 1d.

The discharge pipe 7 protruding from the discharge port 1b is provided with a perforated tube 71 having a large number of holes. The porous tube 71 further includes a porous mesh portion 71a and a porous tube portion 71b.
It is composed of As shown in FIG. 4, the porous cylinder portion 71b is attached to the discharge pipe 7 by a flange 71-1. The porous mesh portion 71a is connected to the porous cylinder portion 7.
It is constructed by attaching a mesh to the entire inner surface of 1b, and the mesh size of the mesh is sufficiently smaller than the size of the solid material such as a tablet to be conveyed.

An outer cylinder 73 is fixed to the side surface of the flange 71-1, surrounding the perforated cylinder 71 and with a predetermined distance between it and the outer peripheral surface of the perforated cylinder 71. . A part of the outer cylinder 73 includes an intake pipe 9 of a suction device 9 that sucks air inside the exhaust pipe 7.
A is attached.

This suction device 9 has the suction pipe 9 connected to the suction device 9b.
A is connected to the intake pipe 9a, and a damper 9c for adjusting the amount of intake air is attached in the middle of the intake pipe 9a.

An opening/closing lid 11 is attached to the tip end of the porous cylinder 71 to tightly close the tip end. A weight 11a whose position can be adjusted with a screw is attached to the opening/closing lid 11 so that the lid 11 opens when a predetermined amount of solid substances such as tablets to be transported is reached.

Next, the operation of this solid material conveying device will be explained.
By rotating the motor 5c, the rotating brush 5
At the same time, turn on the suction device 9b. In this state, the opening/closing lid 11 is closed by suction, so air is sucked in from the input hopper 1c,
Airflow is provided in the cylinder 1 from the bottom to the top.

When a solid substance such as a tablet is inputted from the input hopper 1c in this state, it is guided by the side surface of the helical coil 3 and conveyed toward the discharge port 1b while receiving a force in the circumferential direction by the rotating brush 5. At this time, since the solid object such as a tablet is given a conveyance force by the air flow in the direction in which the solid object is conveyed, the conveyance of the solid object such as a tablet becomes very smooth. For this reason, brushes and helical brushes for solid objects such as tablets, etc.
The contact of the coil is small and the solid object, such as the tablet, is not abraded more than necessary.

Next, the solid material such as a tablet that is transported through the cylinder 1 and discharged from the discharge port 1b passes over the porous cylinder 71 while sliding. At this time, medicine powder, dust, etc. adhering to the surface of the solid object such as a tablet are sucked by the suction device 9b through the porous mesh portion 71a and the porous cylinder portion 71b, and are discharged.

Next, solid substances such as tablets that have passed through the porous cylinder 71 accumulate in the closed lid 11. As shown in Figure 5, when a predetermined amount of solid matter accumulates,
As shown by the dotted line in the figure, the opening/closing lid 1
1 is opened and a predetermined amount of solid matter is discharged. When a predetermined amount of solid matter is discharged, the opening/closing lid 11 is closed by the weight 11a, and the same operation as described above is repeated again.

Although the present invention has been described above in detail using one embodiment, the present invention is not limited thereto. For example, the tube 1 does not need to be disposed upward but may be placed sideways, and the porous tube portion 71b The porous mesh portion 71a can also be omitted by reducing the diameter of the holes. Further, the input hopper 1c does not necessarily need to be attached, and a pipe for directly transferring solid materials such as tablets may be attached to the input port 1a. Furthermore, the rotating brush 5 is not limited to the shape shown in FIG. 3; for example, as shown in FIG.
It is also possible to have a structure in which the helical coils 3 are arranged radially in a spiral shape, and in short, any shape may be used as long as the solid material can be conveyed through cooperation with the helical coil 3.

Further, in the above embodiment, the discharge pipe 7 is provided with a perforated cylinder 71 and an outer cylinder 73, a suction device 9 is attached to the outer cylinder 73, and an opening/closing lid 11 is attached to the distal end of the discharge pipe 7.
However, the suction device 9 does not necessarily have to be attached to the outlet 1b side;
An air flow generating device may be constructed in which a fan is attached to the side a and air is blown from the input port 1a side.In short, the air flow generation device generates an air flow in the direction of conveying the solids in the cylinder 1. Any device may be used.

〔Effect of the invention〕

As explained above, according to the solid material conveying device according to the present invention, a perforated cylinder having a wall provided with a large number of holes having a shape and size that does not allow the solid material to pass through is provided in communication with the discharge port and inclined downward. Also, an outer cylinder is provided to enclose the porous cylinder, and the air inside the cylinder is sucked into the outer cylinder,
A suction device that generates an air flow from the input port to the discharge port is installed in the cylinder of the conveyance device, so solid objects receive buoyancy from this air flow, so solid objects with brittle and soft surfaces such as tablets are Even when conveyed, an excellent effect can be obtained in that the solid material is not polished more than necessary by the rotating brush.

In addition, powder and dirt adhering to the surface of the solid material discharged from the discharge port into the porous cylinder are collected into the suction device through the holes in the porous cylinder, so powder and dirt adhere to the surface of the solid material. An excellent effect can be obtained in that it is discharged without any particles attached to it.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing the overall structure of the solid material conveying device according to this embodiment, FIGS. 2 a, b, and c are views showing the cross-sectional shape of the helical coil 3, and FIG. FIG. 4 is a partial sectional view showing the porous tube 71 portion of the discharge pipe 7, and FIG.
FIG. 6 is a diagram illustrating the operation of the rotary brush 1, and FIG. 6 is a diagram showing another rotating brush 5. In the figure, 1...tube, 1a...inlet, 1b...outlet, 3...helical coil, 5...rotating brush, 5a...shaft member, 5b...brush fiber, 7...
...Discharge pipe, 71... Porous tube, 73... Outer tube, 9...
...suction device, 11...opening/closing lid.

Claims (1)

[Scope of Claims] 1. Inside a cylindrical tube, which has an inlet for introducing solids at one end and an outlet for discharging solids at the other end, it is placed in close contact with the inner wall over its entire length. In addition to disposing a wound helical coil, a rotary brush in which brush fibers are radially implanted on a rod-shaped shaft member is rotatably disposed, and the solids input from the input port are discharged by the rotation of the rotary brush. In a device for conveying solids toward an outlet, a perforated cylinder having a wall with a large number of holes with a shape and size that does not allow the solids to pass through is provided in communication with the discharge port and inclined downward, and the perforated cylinder A solid material, characterized in that an outer cylinder is provided to enclose the solid material, and the outer cylinder is provided with a suction device that sucks the air inside the cylinder and generates an air flow from the input port to the discharge port in the cylinder of the conveyance device. Equipment for transporting objects. 2. An opening/closing lid is provided at the tip of the porous cylinder, and the opening/closing lid is normally biased in the closing direction by a weight around the shaft, and opens by the weight when a predetermined amount of solids to be discharged from the discharge port has accumulated. A conveying device for solid objects according to claim 1, characterized in that it is configured as follows.