Beating-rubbing type millet threshing mechanism

Abstract

The invention relates to the field of agricultural machinery, in particular to a beating and rubbing type grain threshing device, and solves the problems of the prior grain threshing machine such as high grinding rate, high loss rate, low threshing performance and complicated operation. The beating and rubbing type grain threshing device comprise a machine frame, a feeding hopper fixed above one side of the machine frame, and a feeding device arranged under the feeding hopper, wherein the machine frame is provided with a threshing plate inside. One end of the threshing plate is arranged belowthe feeding hopper and a waste outlet is arranged below the other end of the threshing plate. A beating and rubbing plate is arranged above the threshing plate. One end of the beating and threshing plate is connected with a four-rod driving mechanism, while the other end is connected with a sliding block. The four-rod driving mechanism is a crank rocker mechanism. A clearance of an inlet between the beating and rubbing plate and the threshing plate is 18 to 22 mm, while a clearance of an outlet between the beating and rubbing plate and the threshing plate is 3 to 5 mm. A clearance of an inletbetween the feeding device and the threshing plate is 22 to 27 mm, while a clearance of an outlet between the feeding device and the threshing plate is 8 to 12 mm. The beating and rubbing type grain threshing device avoids 'ground grains' and 'braid twisting' due to high water content 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 clapping millet threshing device especially suitable for threshing small miscellaneous grains such as millet. Background technique [0002] At present, the known crop threshing devices mainly rely on the principle of impact, rubbing, combing, etc. to separate grains from ears. Threshing devices such as bow-tooth drum type are generally composed of a rotating drum and a fixed grid-shaped concave plate. By adjusting the drum speed and the size of the entrance and exit gap between the drum and the concave plate, it can meet the threshing and separation of different crops. needs. 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 threshing speed, which can reach 14-17m / s, and the grid size of the fixed grid type concave plate is relatively large...

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 clapping type millet threshing device with novel structure

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