Multi-stage efficient grain cleaner

Abstract

The invention provides a multi-stage efficient grain cleaner which comprises a first material feeding device, a fan dust removal device, a first air screening device, a second material feeding device, a second air screening device, a specific gravity separator and a rack, wherein the first material feeding device and the fan dust removal device are arranged at the same end of the rack; the first material feeding device comprises a first material feeding hopper and a first lifting machine communicating with the first material feeding hopper; the fan dust removal device comprises an induced draft fan and a dust remover communicating with the induced draft fan; the first air screening device comprises a first vibration sieve, a first debris suction box and a first air suction pipe; the second material feeding device comprises a second material feeding hopper and a second lifting machine; the second air screening device comprises a second vibration sieve, a second debris suction box and a second air suction pipe; and the specific gravity separator is arranged under the second vibration sieve. By the adoption of the modularized design for combining the first air screening device, the second air screening device and the specific gravity separator, the multi-stage efficient grain cleaner can meet different requirements of clients, and maintenance and equipment replacement are facilitated.

Description

technical field

[0001] The invention relates to a grain screening device, in particular to a multi-stage high-efficiency grain cleaning machine. Background technique

[0002] With the development of modern agricultural science and technology and the improvement of human living standards, more and more people pay more and more attention to the processing quality of seeds and grains. Due to different harvesting methods, the harvested grains are mixed with adulterants, such as weed seeds, small stones, broken straw, other crop-related seed grains, and broken, degraded, immature, disease-damaged, mechanically damaged seeds or grains. Generally, a cleaning machine is used to select grains. Through the cleaning machine, seeds and grain seeds with uniform and full particles can be selected, so that the bulk density, clarity, thousand-grain quality and seed germination rate have been greatly improved. The currently widely used cleaning machines are mainly single wind screen cleani...

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