Method for reducing dust generated in tabletting process machine

Method for reducing dust generated in tabletting process machine

1. Method for reducing dust during manual feeding

The main results are as follows:

add a round cover with handle to the top of the hopper and cover it in time after manual feeding to prevent the diffusion of dust.

vacuum feeder or hoist feeder is used to seal the feeding hopper.

2. measures to reduce dust when pressing sheets up

(1) The auxiliary mechanism can adjust the depth of the upper punch into the middle die hole and reduce the "paracetamol" at the time of compression.

 (2) the suction port of the dust is sucked under the single layer, and the double-layer dust suction device capable of absorbing the "paracetamol" of the punching sheet and the fine dust on the plane of the turntable after the feeder is scraped is changed. (3) the upper opening of the outlet box is added with a cover or a cover to be added with a dust collection opening to be connected with the dust collection device, so as to prevent the dust from spreading out of the top sheet and the dust outlet. (4) a cover plate is added on the feeder;

1) the forced feeder does not adopt the method, but a soft connection is adopted between the feeding hopper and the powder inlet of the forced feeder to seal the feeding hopper to the inlet pipeline of the forced feeder;

2) an organic glass cover plate is added on the natural feeding grid feeder to prevent the dust generated by the collision of the upper punch and the particles during the operation of the upper punch;

 (5) adjusting the upper and lower punch holes of the rotary table, the machining process of the inner hole of the middle mold, improving the roughness of the surface of the inner hole and the degree of the roundness of the aperture, and reducing the clearance between the head of the punch and the inner hole of the middle mold so as to reduce the "paracetamol" and the "leakage of powder".

(6) the top of the compression chamber is provided with a dust removal interface, and the dust of the compression chamber is further purified.

3. measures to reduce dust when punching and running the pressing sheet

The main results are as follows:

adjust the machining technology of the upper and lower punch holes and the inner hole of the middle die, improve the roughness and roundness of the inner hole surface, reduce the gap between the punch head and the inner hole of the middle die, and reduce the "powder leakage".

when cleaning the yard, use the special cleaning tool to clean up the upper part of the punch, then take it down, then use the special cleaning tool to clean up the dust under the middle die, clean up, and then remove the middle mold.

4.In the case of natural grid feeder, the bottom surface of the forced feeder and the mold plane in the rotary table are all in the process of tabletting along the outer circle of the rotary table in the process of tabletting.

The main results are as follows:

the basic structure of the grid feeder does not change, the wall thickness is reduced, the skeleton of the feeder is formed, and then sprayed or die-cast polytetrafluoroethylene is carried out.

the forced feeder changes the copper liner hopper into polyurethane sealing ring structure.

 (3) the feeder becomes a non-gap feeder, and the bottom of the feeder realizes zero gap contact with the die table of the turntable, which eliminates the structure of the scraping plate, avoids the powder leakage in the outer circle of the turntable, and also avoids the excessive dust leakage into the downflushing, which is more beneficial to maintain the consistency of the sheet weight.