Cyclone separation cylinder for cleaning cereals

Abstract

The invention discloses a cyclone separation cylinder for cleaning cereals. The cyclone separation cylinder comprises an impurity-sucking portion at the upper end, a middle cylindrical separation portion and a grain-discharging port portion at the lower end, wherein the impurity-sucking portion is composed of a separation pipeline stretching into the cylinder, and the grain-discharging port portion is composed of chains of balls and a non-smooth conical cylinder body. A feeding port is formed in the side wall of the separation cylinder body. The feeding port is located on the side, close to the lower end of the cylindrical cylinder body, of the central axis of the cylinder body. A non-smooth biomimetic surface is adopted as the inner side wall of the conical cylinder body at the lower endof the cylinder body. Ball chains are hung at the upper end of the conical cylinder in a spaced manner. According to the cyclone separation cylinder for cleaning the cereals, the separation effect ofthe separation cylinder is effectively improved by the position of the feeding port; adhesion and accumulation of impurities can be reduced by the non-smooth biomimetic surface; meanwhile, under the function of airflow, light impurities can be effectively prevented from accumulating on the inner wall of the conical cylinder body and blocking the grain-discharging port by the ball chains hung at the upper end of the conical cylinder; and the impurity-sucking pipeline portion of the separation cylinder stretches into the interior of the separation cylinder, and airflow pressure loss inside the separation cylinder is reduced.

Description

technical field [0001] The invention relates to a cleaning device for a grain harvester, in particular to a cyclone cleaning and separating cylinder for grain harvesting, which belongs to the field of agricultural machinery. Background technique [0002] The cleaning device is an important part of the combine harvester, and its performance has a decisive influence on the operation effect of the combine harvester. Hilly and mountainous areas account for about 70% of my country's land area and are important grain production bases in my country. However, the hilly and mountainous areas have the characteristics of small and irregular plots and large height differences between fields, making large and medium-sized grain combine harvesters and their traditional "fan-shaker" cleaning methods unsuitable for mechanized harvesting operations in these areas. The cyclone separation cleaning system using pneumatic conveying has been widely used in the transportation and cleaning of ore,...

AI Technical Summary

Problems solved by technology

[0004] The invention aims at the problem that the lower end of the existing grain harvester cyclone separation and cleaning system is easy to block and the pressure loss in the separation cylinder is large, and provides a cyclone separation cylinder that prevents the lower section from being blocked and the pressure loss of the airflow

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