JPH08151128A - Transfer mechanism of powder - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a transfer device capable of reliably sending out a lightweight powder or granular material from a pushing device and smoothly transferring it as it is. [Structure] The upper end of a triangular hopper 2 having a narrow lower end is fixed to the upper end of a machine frame 1, and a spiral blade screw 22 is rotatably arranged at the lower end of the screw shaft 2 thereof.
3, the tip of which protrudes outward from the hopper 2 through the pushing tube 3 and serves as the axis of the wheel 4 which is fixed, and is rotated by the transmission of the motor 5 and the belt 50 provided in the machine frame 1. A supply pipe 6 is connected to the lower end of the pushing pipe 3, and a tip nozzle portion 72 of an air pressure feeding pipe 71 of an air blower 7 provided on the upper portion of the machine frame 1 is placed inside the feeding pipe 6 near the pushing pipe 3. It is arranged in the feeding direction. An air amount control valve 8 is provided in the pushing pipe 3 so as to communicate with and open inside the pushing end.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer mechanism for relatively lightweight powder particles such as plastic particles.

[0002]

2. Description of the Related Art Conventionally, as a fixed amount transfer, a pushing device for dropping and sending from a tip end by rotation of a spiral blade screw has been used, but a relatively lightweight powder or granular material cannot be smoothly dropped, and has fallen. It was necessary to transfer the granular material by another device such as a conveyor device.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, it is possible to reliably send out a lightweight powder or granular material from a pushing device, and
Provided is a transfer device which can be smoothly transferred as it is.

[0004]

For this reason, the present invention relates to a pushing device for feeding a light-weight powder or granular material from the tip by the rotation of a spiral blade screw, and connecting it to a blower in a supply pipe which is connected and communicated below the pushing end. The nozzle part of the air pressure feeding pipe is arranged in the feeding direction, and an air amount control valve for adjusting the amount of air guided to the inside of the pushing end is provided, and the air pipe connected to the valve is connected to the pushing end communicating part. It is a transfer device having a structure in which openings are connected.

[0005]

[Function] By rotating the spiral blade screw of the pushing device, the granular material is sequentially sent out from the tip from the pushing end, and the fed granular material is sucked by the negative pressure generated by the air injection in the nozzle part of the pneumatic feeding pipe. It is transferred along with the air in the feed direction of the supply pipe. At this time, the amount of suctioned air taken into the pushing end can be adjusted by controlling the air amount control valve.

[0006]

The details of the present invention will be described below with reference to illustrated embodiments. In this example shown in FIGS. 1 and 2, 1 is a machine frame, and the upper end of a triangular hopper 2 having a narrow lower end is fixed to the upper end of the machine frame 1. The hopper 2 is provided with a powdery / granular charging section 21 opening at the center of the upper end surface thereof, and a spiral blade screw 22 rotatably disposed at the lower end thereof.

The screw shaft 23 of the screw 22 is
The tip of the wheel 4 is a shaft of the wheel 4 which is fixedly inserted from the hopper 2 through the pushing tube 3 and protrudes to the outside. The wheel 4 is rotated by a motor 5 provided in the machine frame 1 and a belt 50.

A supply pipe 6 is connected to the lower end of the pushing pipe 3 so as to communicate therewith, and a pneumatic feeding pipe 7 of a blower 7 provided on the upper portion of the machine casing 1 is connected.
No. 1 nozzle 72 is located near the feed pipe 3
It is arranged inside in the feeding direction. The supply pipe 6
Has a diameter slightly smaller than the portion facing the nozzle portion 72.

Reference numeral 8 denotes an air amount control valve, which is provided in the pushing tube 3 so as to communicate with the inside of the pushing end so as to adjust the amount of air guided to the pushing end.

In this embodiment thus constructed, the powder or granular material is supplied from the charging section 21 of the hopper 2, and the motor 5 is driven to rotate the wheel 4 and rotate the screw shaft 23. As a result, the screw 22 is rotated and the powder particles are sent by the spiral blade projecting and dropped from the pushing tube 3 to the supply tube 6.

At this time, since the blower 7 is driven to inject air from the tip nozzle portion 72 of the pneumatic feed pipe 71, the pushing end becomes a negative pressure, so that the powder or granular material in the free state at the pushing end is sucked. It is sucked into the supply pipe 6 together with the air.
The sucked powdery particles are transferred to the end of the supply pipe 6 by the supply air.

The sucked air taken into the pushing pipe 3 can be adjusted by controlling the opening / closing of the air amount control valve 8.
It is possible to prevent the excessive powder or granules from being sucked.

Thus, according to this embodiment, the screw 22
By adjusting the air amount control valve 8, the powder or granules sent in step 1 are sucked into the supply pipe 6 and pneumatically fed.

Although the present embodiment is configured as described above, the present invention is not limited to this. For example, regardless of the structure of the pushing mechanism, any structure may be used as long as the powder particles are fed from the tip by the rotation of the spiral blade screw. Further, the shape and connection structure of the supply pipe arranged below the pushing end are not limited, and the structure of the nozzle portion of the pneumatic feed pipe is appropriate. Further, the structure of the air amount control valve that adjusts the amount of air introduced into the pushing end is arbitrary.

[0015]

EFFECTS OF THE INVENTION According to the present invention, powder and granules sent by a screw are sucked into a supply pipe by adjusting an air amount control valve and are pressure-fed by air, so that the powder can be transferred reliably and smoothly. You can do it.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view of a main part of an embodiment of the present invention.

FIG. 2 is a vertical sectional front view of a cross section of the main part.

[Explanation of symbols]

 1 Machine Frame 2 Hopper 21 Input Port 22 Screw 23 Screw Shaft 3 Pushing Pipe 4 Wheel 5 Motor 6 Supply Pipe 7 Blower 71 Air Pressure Feeding Pipe 72 Nozzle 8 Air Volume Control Valve

Claims (1)

[Claims] 1. In a pushing device for feeding a lightweight powder or granular material from the tip by the rotation of a spiral blade screw, a nozzle portion of an air pressure feeding pipe connected to a blower is fed into a feeding pipe connected under the pushing end. And an air amount control valve for adjusting the amount of air guided to the inside of the pushing end, and an air pipe connected to the valve is open-connected to the pushing end communicating portion. Body transport mechanism.