Grain selection system having function of distributing materials uniformly and pre-selecting

Abstract

The invention relates to a grain selection system having the functions of distributing materials uniformly and pre-selecting. The system includes a material vibrating plate, a selection sieve and a fan. The material vibrating plate is composed of a vibrating plate surface, a vibrating plate guide strip, a vibrating plate weight counterweight wheel, a vibrating plate chain wheel and a vibrating plate counterweight sheet. When grain is selected, the grain is distributed uniformly in the radial direction of the selection mechanism, pre-selection can be conducted on materials, a part of the grain can pass through the sieve in advance, the selection pressure of a rear-portion selection mechanism is thus reduced, and the selection efficiency is largely improved. By additional installing sheet-like adjustable counter weights on power input parts of the material vibrating plates and the selection sieves, the inertia force of the selection mechanism can be reduced by adjusting the counter weights, and the effect of reducing vibration and noise is thus achieved.

Description

technical field [0001] The invention relates to a grain cleaning system with functions of evenly distributing materials and pre-cleaning, and belongs to the field of cleaning and separation of combine harvesters. Background technique [0002] The cleaning system of the traditional grain combine harvester uses a drafter to separate and clean the protruding objects. Due to the limitation of the internal space of the machine, the separation and cleaning capabilities of the drafter are obviously limited, and it has been unable to meet the needs of my country's combine harvesters. development needs. When the feeding volume of the existing traditional combine harvester becomes large, the cleaning system cannot effectively solve the problems of large re-shedding volume and large entrainment loss, and the cleaning effect is not ideal. The combined cleaning and separation technology of material shaking plate and cleaning screen has the advantages of long threshing stroke, large clean...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that, in order to solve the situation of a large feeding amount of the combine harvester, the cleaning system has a poor effect of uniformly distributing the extruded matter, the cleaning loss is large, and the cleaning load is large, so it cannot adapt to the cleaning of a large amount of extruded matter. To solve the problem, provide a grain cleaning system with uniform material distribution and pre-cleaning function that can quickly and evenly distribute the protruding material, reduce cleaning loss and cleaning load, and can reduce the energy and noise of the mechanism.

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