Grinding-rubbing type millet threshing mechanism

Abstract

The invention relates to the field of agricultural machinery, in particular to a grinding and rubbing type grain threshing device, and solves the problems the prior grain threshing machine such as high grinding rate, high loss rate, low threshing performance and complicated operation. The grinding and rubbing type grain threshing device comprises a machine frame and a main shaft, wherein a feeding hopper is fixed above the machine frame. A feeding device is arranged under the feeding hopper. A cone-shaped grinding roller is arranged under the feeding device. A cone-shaped grinder-vein grid plate fixed with the main shaft is arranged under the grinding roller. An outlet of the feeding device is positioned between an inlet of the grinding roller and an inlet of the grinder-vein grid plate. Through the fit of the grinding roller and the grid plate, the grains between the grinding roller and the grid plate are ground and gradually conveyed around, thereby realizing grinding and rubbing of the grains. Meanwhile, with a cleaning device, the grinding and rubbing type grain threshing device can separate grains from husks and husks from grain ears at one time, avoids 'grinding grains', 'twisting braids' due to high water content and so on during grain threshing, improves threshing performance, reduces loss rate and grinding rate and improves the threshing quality.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a millet threshing device suitable for threshing small miscellaneous grains such as millet. Background technique [0002] At present, the known crop threshing devices mainly rely on the principles of impact, rubbing, and brushing to separate grains from ears. Threshing devices such as the bow-tooth drum type are generally composed of a rotating drum and a fixed grid-shaped concave plate. By adjusting the rotating speed of the drum and the size of the entrance and exit gaps between the drum and the concave plate, it can meet the requirements of threshing and separation of different crops. Require. According to the different crop flow direction, it can be divided into different methods such as tangential flow type and axial flow type. The traditional threshing device has a high detachment speed, which can reach 14-17m / s, and the grid size of the fixed grid type concave plate...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high crushing rate, high loss rate, low cleaning rate and cumbersome operation in the existing grain threshing device, the present invention provides a millet threshing device with a novel structure, which can complete the millet and grain code, The separation of grain yards and grain ears can avoid the phenomenon of millet "rice milling", improve the cleaning rate, reduce the loss rate and broken rate

Images