Double-layer dust collection device of tabletting machine

Abstract

The invention discloses a double-layer dust collection device of a tabletting machine. The device comprises a dust collection main channel, an upper dust collection opening and a lower dust collection opening, wherein the dust collection main channel is connected with an air collection pipe and is positioned on one side of a rotating platform; the upper dust collection opening is positioned at a middle die hole on the surface of the rotating platform; and the lower dust collection opening is positioned on the surface of a lower plunger rod and comprises a first dust collection inlet and a first auxiliary channel which is connected with the first dust collection inlet and the main channel. In the device, the upper and lower dust collection openings are used for collecting dust on the surface of a middle die platform and the surface of the lower plunger rod respectively. When the dust is accumulated on the surface of the middle die platform, dust collection is performed through the upper dust collection opening; and when the dust leaked from the middle die hole is stuck to the surface of the lower plunger rod, dust collection is performed through the lower dust collection opening so as to achieve an ideal dust collection effect.

Description

technical field [0001] The invention relates to a rotary tablet press, in particular to a double-layer dust suction device for the tablet press. Background technique [0002] In my country's pharmaceutical, chemical, food and other industries, solid powder or granular materials with certain effects are usually compressed into tablets to form tablets or health products. People usually call the machine that is pressed into tablets a rotary tablet press. There is a device on the tablet press that sucks up a small amount of powder that leaks from the bottom of the feeder and the turntable table, called a dust suction device. At present, the dust collection device on the market is usually an integral single-layer structure, which is generally made of sheet metal welding. It is difficult to ensure the gap between the suction port and the middle mold table, so the dust suction effect is poor, and it is only suitable for low-speed rotating tablet presses. And it can only absorb th...

AI Technical Summary

Problems solved by technology

At present, the dust collection device on the market is usually an integral single-layer structure, which is generally made of sheet metal welding. It is difficult to ensure the gap between the suction port and the middle mold table, so the dust suction effect is poor, and it is only suitable for low-speed rotating tablet presses. And it can only absorb the dust on the table surface of the middle mold, and the small amount of powder leaked from the hole of the middle mold cannot be sucked away. The powder leaked from the hole of the middle mold is easy to stick to the surface of the lower punch, which is easy to cause the lower punch to stick. Chong phenomenon

However, the powder on the table top of the middle mold cannot be sucked clean, which may easily cause differences in tablet weight and color mixing when pressing two-color or three-color

At the same time, it is difficult to remove the powder adsorbed in the inner cavity of the dust collection device. After the dust agglomerates, it will block part of the section of the suction channel, reduce the air volume, and greatly reduce the dust collection effect. The operator is required to stop and clean at regular intervals. Punch rod and dust suction device, greatly reducing production efficiency

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