Bottom-feeding vertical type axial flow threshing device

Abstract

The invention discloses a bottom-feeding vertical type axial flow threshing device, and belongs to agricultural machinery. A feeding hole is formed in a part on one side of a bottom plate of a cylindrical concave plate; a feeding device is mounted under the feeding hole; a reverse cone is fixedly mounted on a lower end face of a threshing cylinder; feeding blades are fixedly mounted on the reverse cone; a separating plate is mounted on the external part of the upper side of the threshing cylinder; an annular negative pressure chamber is formed in the external part of the lower side of a housing; a negative pressure draught fan is configured on the outer side of the annular negative pressure chamber and intercommunicated with the outer side of the annular negative pressure chamber. In the device, the material can be fed from the bottom of the threshing cylinder in the axial direction; the reverse cone with the feeding blades is mounted at the bottom end part of the threshing cylinder, so that the feeding space is enlarged, and the feeding smoothness is improved; the bottom-feeding vertical type axial flow threshing device is reasonable and simple in structure, large in feeding amount, free from blocking failure, high in operation efficiency, good in grain cleanliness, and wide in universality.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to a vertical axial flow threshing device that feeds material from the bottom along the axial direction. Background technique [0002] The vertical axial-flow threshing device is a threshing and separation operation assembly assembled on various crop combine harvesters. Because of its compact structure and complete functions, it omits various operating parts and assemblies on traditional combine harvesters such as drafters. It simplifies the structure of the combine harvester and is widely used in the combine harvester. However, due to structural design defects, for example, the existing vertical axial flow threshing device mostly adopts the feeding structure along the radial direction of the lower side of the threshing drum. The small amount will affect the working efficiency of the machine tool, and it is prone to blockage; in addition, the cleaning and separation fan of the current...

AI Technical Summary

Problems solved by technology

However, due to structural design defects, for example, the existing vertical axial flow threshing device mostly adopts the feeding structure along the radial direction of the lower side of the threshing drum. The small amount will affect the working efficiency of the machine tool, and it is prone to blockage; in addition, the cleaning and separation fan of the current vertical axial flow threshing device is arranged on the top of the threshing drum, and is installed coaxially with the threshing drum, which is arranged at a high position. The speed of the fan is limited and affected by the speed of the threshing drum, the effect of cleaning and separation is poor, and the cleanliness of the grain is not high

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