Cleaning device for vertical axial flow harvester

Abstract

The invention relates to a cleaning device for a longitudinal axial flow harvester. The upper shaking plate, the front fish scale screen, the middle fish scale screen and the rear fish scale screen correspond head to tail, and the upper coarse screen is fixed on the support and is located on the upper part of the front fish scale screen. , the front sieve at the tail of the front scale sieve is higher than the middle sieve at the front of the middle scale sieve, the middle sieve at the tail of the middle scale sieve is higher than the rear sieve at the front of the rear scale sieve, and the top of the rear scale sieve has Crop pushing plate; the back inclination angles of the front sieve of the front fish scale sieve, the middle sieve of the middle fish scale sieve and the rear sieve of the rear fish scale sieve increase in turn and can be adjusted; the lower shaker plate is set on the upper shaker plate and the front fish scale The lower part of the screen, the lower screen is located at the lower part of the fish scale screen in the middle, the lower screen is inserted in the vibrating screening box and can be taken out from the side, the inclined wind guide plate at the rear of the lower shaking plate extends to the air inlet of the vibrating screening box. The invention has a reasonable and simple structure, can clean grains in sections and layers, can reduce the cleaning load, has good operation adaptability, and can realize high-efficiency cleaning.

Description

technical field [0001] The invention relates to a cleaning device of a longitudinal axial flow harvester, belonging to the technical field of longitudinal axial flow harvesters. Background technique [0002] The longitudinal axial flow threshing method adopted by the longitudinal axial flow combine harvester has a relatively long threshing drum and a relatively low speed, the threshing effect is ideal, and the grain damage rate is relatively low, so it is more and more favored by the market. The cleaning device is an important working part of the vertical axial flow combine harvester, which has an important impact on the working performance of the whole machine and the cleanliness of grain seeds. For the cleaning device of the longitudinal axial flow harvester, one is to set a shaking plate and a cleaning screen in the vibrating screening box, and the shaking plate and the cleaning screen are reciprocated to continuously transport the mixture out of the drum from the shaking...

AI Technical Summary

Problems solved by technology

However, due to the fact that the front threshing area of ​​the axial flow drum produces large grain components and few branches and leaves, while the threshing content in the middle and rear threshing areas decreases sequentially but the long branches and leaves increase. Therefore, in the screening process, there is still no solution The problem of high cleaning load cannot minimize the cleaning loss rate and impurity content

Furthermore, the inclination angles of the scale screens are all the same, and the lower woven screen is not easy to replace, and the screening angle and screen aperture cannot be quickly adjusted, so it has certain limitations on the crops to be cleaned.

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