A corn threshing device with adjustable threshing gap

Abstract

The invention relates to the field of maize processing equipment, and in particular, relates to a maize threshing device with adjustable threshing clearance, wherein the maize threshing device comprises a frame, a concave plate screen arranged on the frame and a threshing cylinder arranged inside the concave plate screen. A maize threshing interlayer is constituted by the inner surface of the concave plate screen and the outer surface of the threshing cylinder together, and a rubber expansion tube is fixed inside a cylinder body of the threshing cylinder. The rubber expansion tube is arrangedin the length direction of the cylinder body of the threshing cylinder and fills the length direction of the cylinder body of the threshing cylinder, and a number of threshing elements are arranged onthe annular surface of the rubber expansion tube; one end of each threshing element is fixedly connected on the rubber expansion tube, and the other end penetrates through the cylinder body of the threshing cylinder and enters the maize threshing interlayer. When the shaft diameter of the rubber expansion tube increases or decreases under the action of gas, the threshing elements can move in theradial direction of the cylinder body of the threshing cylinder and the threshing clearance of maize is changed. The maize threshing device can change the threshing clearance of each part of the maizethreshing interlayer, and the threshing effect is good.

Description

technical field [0001] The invention relates to the field of corn processing devices, in particular to a corn threshing device with adjustable threshing gap. Background technique [0002] As the grain crop with the largest planting area in my country, corn occupies an increasingly important position in my country's grain production. It is the trend of the times to realize the whole mechanization of corn sowing, harvesting and threshing. Among them, harvesting is a crucial link during threshing. The threshing gap of the existing corn thresher is not easy to adjust, and the machine must be shut down for manual adjustment, resulting in low production efficiency. When processing different batches of corn cobs with uneven sizes, when the diameter of the corn cobs is larger than the threshing port, it is easy to break the corncobs; when the diameter of the corn cobs is smaller than the threshing port, the threshing is not clean, the cleaning rate is low, and the broken heart rat...

AI Technical Summary

Problems solved by technology

However, the setting of the spring causes the threshing device to be easily blocked, and once a large amount of corn kernels are blocked between the threshing element on the drum and the support, between the concave threshing bar of the concave screen and the spiral support bar, the threshing device The threshing efficiency and threshing effect will be greatly reduced. At the same time, due to its structure, it is difficult to clean up the blocked corn kernels.

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