Sand screening device for efficiently separating waste residues

Abstract

The invention discloses a sand screening device for efficiently separating waste residues. The sand screening device comprises a box body, a feeding hopper and a driving motor. The top of the box bodyis communicated with the feeding hopper. A partition is arranged in the box body, and scraping plates distributed in a cross shape are arranged in the portion, above the partition, in the box body. Arotating shaft is positioned below the partition and fixedly connected with a scattering disc, a conical screen cylinder is arranged below the scattering disc, and a slag discharge pipe is communicated with the lower end of the conical screen cylinder. According to the sand screening device, by arranging the scraping plates and the partition, uniform intermittent blanking of coarse sand is realized, and the coarse sand is uniformly scattered on the inner wall of the conical screen cylinder through the arrangement of the scattering plate, so that accumulation of the coarse sand on the screen surface is avoided, the screening effect is ensured, and the screening efficiency is improved; and fine sand entering the slag discharge pipe is blocked and centrifugally separated through the slag discharge pipe with sieve holes in the upper end and a spiral plate, so that the screening effect is improved.

Description

technical field [0001] The invention relates to the construction field, in particular to a sand screening device for efficiently separating waste residues. Background technique [0002] The sand sieving machine imitates the working principle of artificially using the inclined screen to screen sand. It adopts a flat rolling screen cylinder and ensures that the material flow can be continuously rolled for more than five circles between the multi-turn inner spiral blades in the screen cylinder, so that the sand material can be repeatedly screened. It is fully discrete and separated by tumbling and sliding; it is different from the pushing and burying of large and small materials caused by inclined roller sieves, and the screening process is rushed; it is also different from the vibration and mixing of large and small materials caused by inclined vibrating screens. [0003] The feeding speed of the screen cylinder of the traditional sand screening machine depends on the external...

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Problems solved by technology

[0003] The feeding speed of the screen cylinder of the traditional sand screening machine depends on the external device. When the input volume is large, coarse sand is prone to accumulate inside, which reduces the screening efficiency and screening effect of the screen cylinder. In addition, the fine sand may be mixed with the waste residue during the screening process. Discharge, the screening effect needs to be improved

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