Double longitudinal axial flow rotary drum negative pressure feeding and shunting device

Abstract

The invention discloses a double longitudinal axial flow rotary drum negative pressure feeding and shunting device. The device comprises a rotary drum body, a feeding head main body assembly and an auxiliary feeding accessory. When crop stalks to be threshed on a combine harvester are fed into a double longitudinal axial flow rotary drum from a conveyor trough, the stalks are grabbed by feeding helical blades, and are forcibly conveyed by negative pressure which is formed by the common effect of multistage axial flow blades which rotate at high speed, a rotary drum top cover and a rotary drum concave plate screen; the crop stalks to be threshed are shunted to the double axial flow rotary drum by the common effect of a concave plate guide plate and a shunting plate for threshing separation; the stalks subjected to threshing separation are discharged out of a machine body by a grass discharge plate on a longitudinal axial flow rotary drum body. According to the double longitudinal axial flow rotary drum negative pressure feeding and shunting device, the crop stalks such as rice, wheat and soybean which are conveyed by the conveyor trough on the combine harvester are forcibly fed and effectively shunted to the double longitudinal axial flow rotary drum for being subjected to threshing separation, and the problem that crops are easily blocked at the feeding inlet of the double longitudinal axial flow rotary drum of the combine harvester is solved.

Description

technical field [0001] The invention relates to the technical field of manufacturing threshing and separation devices for combine harvesters, in particular to a double longitudinal axial flow roller negative pressure that smoothly feeds the crop stalks fed from the conveying trough on the combine harvester to the double longitudinal axial flow rollers Feed the split device. Background technique [0002] At present, most of the existing rice and wheat combine harvesters adopt horizontally arranged axial-flow drum threshing and separation devices. Arrangement, limited by the horizontal space position, the threshing drum can not be too long, the threshing and separation ability is greatly limited, the entrainment loss will increase when the feeding amount is slightly larger, and the adaptability to wet crops and some difficult-to-detach crops is poor. In order to improve the work efficiency and operation performance of the combine harvester, a threshing separation structure wi...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is, in order to solve the problem of poor material feeding and easy blockage of the feeding port in the dual longitudinal axial flow threshing and separation device, to provide a kind of rice, wheat and soybean that can be transported to the conveying trough on the combine harvester. The crops are forced to be fed and effectively shunted into the double longitudinal axial flow drum for threshing and separation. The feed rate is 15~25kg / s. The double longitudinal axial flow drum negative pressure feeding and splitting device

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