Two-stage rotary combined multi-layer sieve

Abstract

The invention relates to a two-stage rotary combined multi-layer sieve. The two-stage rotary combined multi-layer sieve comprises a rack, a hanging frame, a sieve body, an air-draft feeding system anda power transmission system. The sieve body is arranged on the hanging frame. A hanging rod is arranged on the hanging frame. The upper end of the hanging rod is spherically hinged to the rack, and the lower end of the hanging rod is spherically hinged to the hanging frame. The power transmission system is arranged at the lower end of the hanging frame and drives the hanging frame and the sieve body to make planar rotational motions. The sieve body comprises two sieve boxes which are of the same structure. According to the two-stage rotary combined multi-layer sieve, the two sieve boxes are arranged, a plurality of layers of sieve cells which operate at the same time are arranged in each sieve box, and a uniform distribution device is arranged, so that grain evenly enters the different sieve cells to be screened, and accordingly, large impurities and small impurities in the grain are removed; and meanwhile, an air draft system is arranged to extract light fine impurities, such as dust, in the grain, and thus, the purposes of scanning and dust and impurity removing are achieved; and the two sieve boxes and the multiple layers of sieve cells are arranged, so that the impurity removal efficiency is improved, and the screening requirement of large grain depots is met.

Description

technical field [0001] The invention relates to the technical field of grain screening and impurity removal equipment, in particular to a double-stage rotary combined multi-layer screen. Background technique [0002] Before the grains are put into the warehouse, because the grains contain impurities and dust, if the impurities are contained in the grains, it will cause the grains to heat up and become moldy, and it will also make the flow of the grains out of the warehouses difficult, resulting in serious losses of grains. Therefore, the grain must be cleaned before storage, and the impurities and some dust in the grain must be screened out. At present, there are many kinds of equipment for screening and dedusting grain on the market, such as vibrating screens, flat rotary screens, etc., but most of the existing screening and dedusting equipment have single functions and low screening efficiency, which cannot meet the screening needs of large grain depots. Contents of the ...

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Problems solved by technology

At present, there are many kinds of equipment for screening and dedusting grain on the market, such as vibrating screens, flat rotary screens, etc., but most o

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