External knocking drum screening device for calcined gypsum powder preparation

Abstract

The invention discloses an external knocking drum screening device for calcined gypsum powder preparation. The device comprises a drum screen and a power mounting seat used for mounting the drum screen and driving the drum screen to rotate, wherein a torsion mounting frame is mounted on the power mounting seat, an outer rigid knocking mechanism located over the drum screen is mounted on the torsion mounting frame, and the outer rigid knocking mechanism elastically abuts against the outer side of the drum screen through torsion provided by the torsion mounting frame and is matched with the drum screen to rotate in a driven mode; and a plurality of drum outer pad mechanisms which are distributed at equal intervals around the axis of the drum screen are arranged on the outer side of the drum screen. By mounting an outer rolling cylinder, which conducts rolling elastically due to torsion in a driven mode, over the drum screen and mounting the drum outer pad mechanisms, which rotate in a matched mode to periodically lift the outer rolling cylinder, on the periphery of the drum screen, the strength of knocking the drum screen can be adjusted by adjusting the lifting height and torsion strength of the outer rolling cylinder.

Description

technical field [0001] The invention relates to the technical field of drum screening devices, in particular to an external knocking drum screening device for preparing plaster of paris powder. Background technique [0002] Drum sieve is a kind of machine widely used in sorting technology. It sieves the powder whose particle size is smaller than the sieve hole through uniformly distributed sieve holes. It is often used to sieve paris plaster powder. The impurities in the plaster powder are screened. [0003] Due to the poor fluidity of gypsum powder, the sieve hole of the drum screen is often blocked, which will cause poor feeding and frequent shutdown for cleaning. Therefore, it is necessary to knock the rotating drum screen to shake off the clogged powder, so as to ensure the drum The sieve is running normally. In the prior art, external knocking and internal knocking are generally used to remove clogged powder. [0004] Among them, the external percussion type generally...

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Problems solved by technology

[0007] The purpose of the present invention is to provide an external knocking drum screening device for preparing plaster powder, to solve the difficulty in controlling the force of knocking the drum screen within an appropriate range in the prior art, and to shake off the clogged powder with a single knock. The problem of unsatisfactory effect

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