Cleaning sieve blockage monitoring device and cleaning device for agricultural machinery

Abstract

The invention discloses a cleaning sieve blockage monitoring device and a cleaning device for agricultural machinery. The cleaning sieve blockage monitoring device is used for judging whether a cleaning sieve is blocked or not by detecting the air pressure difference between the upper part and the lower part of the cleaning sieve. The monitoring device comprises a pressure difference tester, wherein the pressure difference tester is arranged on the side of the cleaning sieve, and the inner wall of the pressure difference tester is cylindrical; a rotating shaft is inserted into the pressure difference tester in the diameter direction of the cylindrical inner wall; a disc-shaped air tongue matched with the section shape of the cylindrical inner wall is fixedly arranged on the rotating shaft; an upper air taking pipe and a lower air taking pipe leading to the upper part and the lower part of the cleaning sieve lead out of the positions, located at the upper part and the lower part of the cylinder wall air tongue, of the pressure difference tester correspondingly; the tail ends of the two air taking pipes face the air incoming direction of cleaning airflow; and the rotating shaft extends outwards to be connected to an angle sensor. According to the monitoring device, a pipeline is adopted to guide wind pressure, the mechanical wind tongue is adopted to detect the wind pressure difference, good dust holding performance is achieved, dust, branches and leaves can hardly hook and deposit in the monitoring device, and the monitoring device can work reliably in a severe environment.

Description

technical field [0001] The invention relates to the field of agricultural machinery, in particular to a cleaning screen blockage monitoring device and a cleaning device for agricultural machinery. Background technique [0002] As an important oil crop and high-quality protein resource, peanut is in the forefront of the world in terms of planting area and output in my country. According to statistics from the Food and Agriculture Organization of the United Nations (FAO), China's peanut planting area in 2019 was 4.51×106hm2, accounting for 15.21% of the world; the output was 1.76×107t, accounting for 36.04% of the world. [0003] my country's peanut planting is widely distributed, mainly concentrated in Henan, Shandong, Guangdong, Hebei, Liaoning, Anhui, Jiangsu and other regions. There are more than 300 varieties of peanuts planted in various planting modes. However, the mechanization level of peanut harvesting in China is relatively lagging behind that of the United States,...

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Problems solved by technology

[0005] The object of the present invention is to provide a cleaning sieve clogging monitoring device and an agricultural machinery cleaning device according to the deficiencies of the above-mentioned prior art. Sampling and monitoring, so as to realize the purpose of monitoring the clogging of the cleaning sieve, and solve the problem that the clogging of the cleaning sieve in the prior art is difficult to monitor

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