Threshing cylinder for millet harvest

Abstract

The invention relates to a threshing cylinder for millet harvest, belonging to the technical field of crop harvest. The threshing cylinder for the millet harvest comprises a close-type conical front cylinder and an open-type rear cylinder; the open-type rear cylinder comprises a cylinder shaft, a width plate and multiple threshing toothed bars, wherein the cylinder shaft is coaxially connected with the close-type conical front cylinder, the width plate is connected with two ends of the cylinder shaft, and the multiple toothed bars are uniformly arranged on the cylinder shaft in a circumferential direction and connected on the width plate; of the multiple threshing toothed bars, some threshing toothed bars are each provided with a rasp-bar toothed bar and multiple grass arranging teeth, and some threshing toothed bars are each provided with a combined toothed bar and multiple grass arranging teeth; and the combined toothed bars each are formed by mutually and alternately spacing and arranging multiple threshing teeth and multiple arc-shaped spring-teeth. According to the threshing cylinder for millet harvest, the threshing time is long, the separating area is large, and the sticking screens provided with rods and vanes with green stalks are reduced.

Description

technical field [0001] The invention relates to the technical field of crop harvesting, in particular to a millet harvesting threshing drum. Background technique [0002] In recent years, with the promotion of domestic high-quality hybrid millet and the substantial increase in market demand for miscellaneous grains, millet production has begun to be emphasized and expanded, and farmers' production income and planting enthusiasm have also greatly increased. However, the biggest "bottleneck" affecting millet production at present is harvesting. [0003] Millet is a small crop with green and mature stalks, drooping ears, small grains and light grains. It is difficult to separate the grains from the stalks during harvesting, the grains are not easy to remove, the loss rate of entrainment and cleaning is high, and the damage is serious. [0004] At present, there are three kinds of millet threshing drums that have been used in the market, one is a single longitudinal axial flow ...

AI Technical Summary

Problems solved by technology

The powerful rubbing rate of the two full-length bar rollers and the spiral threshing for a long time will destroy the outer shell of the millet and cause the broken rate to exceed the standard, and it is also not suitable for harvesting rice.

The third method, although full-grain stalks with strong rubbing force are also used for threshing, but the single cross-cutting flow method has a short time for threshing crops, and the stalks are relatively complete after threshing, and the broken ear rate is low, which is conducive to subsequent processing.

However, during the actual rubbing and rolling, the green stems and leaves are wet and easy to sieve on the concave plate, so that the grains are not easy to remove.

Due to the insufficient kneading time in a single threshing cylinder, even if combined with the joint kneading action of two threshing cylinders, the above-mentioned paste screening problem cannot be effectively solved due to the different threshing principles of each threshing cylinder

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