Harvesters often appear to “run grain†during work, which is what we often refer to as food leakage. Not only does it cause waste, it also creates unnecessary trouble for future crops. So how do you solve the problem of “running food†in the harvester? The following four points hope to help everyone. Master the correct speed and feed rate. Feeding volume is an important measure of locomotive efficiency. Above the rated amount, the combine will be in an overloaded state. During harvesting, the driver should appropriately adjust the advance speed of the combine harvester according to the factors such as the level of rice straw, yield, and other factors. The amount of feeding is controlled so that the main steps such as forward speed, feed amount, threshing, separation, and cleaning in the harvester work can be combined to avoid overwork. Control the rotation speed of the pull wheel. Pulling wheel speed is too high, pulling teeth on the head of the impact force, falling weight loss; speed is too low, the board can not pull the straw to the cutter in time, resulting in cutting difficulties, increase the vibration of the straw, will increase Loss of grain. The pullout wheel speed should match the forward speed of the harvester. In addition, the position of the picking wheel is too high, the picking board hits the head of the head and causes the loss of the falling grain; the position of the picking wheel is too low, and the cut off mast is thrown out of the machine with the rotation of the picking wheel, resulting in the loss of the falling grain. During operation, according to the height of rice straw, the height of the pullout wheel should be adjusted in time so that the plate-pulling point should be 2/3 above the cutting line of rice and wheat. For dwarf or inverted crops, the height of the pullout wheel should also be reduced accordingly. Reasonably adjust the threshing gap. If the concave plate inlet and outlet gap is small and the rotating speed of the drum is high, it is difficult for the straw to enter the next process, and the removed grains cannot be discharged in time, but continue to withstand the impact of the high-speed roller and increase the crushing rate. The minimum clearance for threshing should not be less than 4 mm. It is also necessary to check whether the drum pulley and the power pulley have a reasonable and accurate match. Flexible adjustment of the cleaning site. For crops with low maturity and high moisture levels, the opening of the upper sifter should be as large as possible to avoid clogging of the propeller with unclean impurities; for high-maturing, relatively dry crops, the upper sifter is opened 2/3 You can. The opening of the lower sifter should be less than the opening of the upper sifter. When the upper sifter is fully opened, the lower sifter can open 2/3 of the upper sifter and the lower sifter can be reduced accordingly. The adjustment of the air volume is preferably that there is no grain in the grain and no grain is in the grain. There are many grain hulls in the grains, and the amount of wind should be increased; the grains and broken ears blown out after the sieving should be large, and the amount of wind should be reduced.
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