Cyclone separating barrel and cleaning system and combine harvester using cyclone separating barrel

Abstract

The invention relates to a cyclone separating barrel and a cleaning system and a combine harvester using the cyclone separating barrel. The combine harvester comprises a frame and the cleaning system arranged on the frame, wherein the cleaning system comprises a gettering fan, a cyclone separating barrel and a gettering pipeline; the gettering separating barrel comprises a barrel body of which the central axis extends along a longitudinal direction and is open at the two ends; an opening in the upper end of the barrel is a gettering hole; the circumferential wall of the barrel is provided with a material inlet; the material inlet is formed on one side of the central axis of the barrel body; the gettering hole vertical line extending upwards and downwards through the center of the gettering hole is deviated away from the central axis of the barrel body; the gettering hole central vertical line and the material inlet are formed on two opposite sides of the central axis of the barrel body along the radial direction of the barrel body. On the premise of ensuring the cleaning capability, the diameter of the cyclone separating barrel can be reduced, so that the size and rotating speed of the gettering fan are reduced, the vibration of the entire combine harvester is reduced, and the application reliability of the entire combine harvester is improved.

Description

Technical field [0001] The invention relates to a cyclone separation drum and a cleaning system and a combine harvester using the cyclone separation drum. Background technique [0002] The cleaning system is an important part of the grain combine harvester, and its performance directly affects the operation effect of the whole machine. The cleaning system used in the current grain combine harvester is the structure disclosed in the Chinese patent application "Cleaning System and Grain Combine Harvester Using the Cleaning System" with publication number CN 102668822A. The cleaning system includes a cyclone. Separating cylinder, the cyclone separator cylinder includes a cylinder with upper and lower ends open. The lower end of the cylinder is the grain outlet, and the upper end of the cylinder is the suction port for discharging the sundries. The cylinder has an upper section with a small upper section and a large lower section. The upper cone section, the upper cone section of th...

AI Technical Summary

Problems solved by technology

However, in this device, the central vertical line of the miscellaneous suction port of the cylinder body coincides with the central axis of the cyclone separation cylinder, and a material inlet is arranged tangentially on one side of the cyclone separation cylinder. In order to reduce the cleaning loss, it is necessary to use The radius of the cyclone separation cylinder is not less than the sum of the width of the material inlet and the radius of the miscellaneous suction port, so as to prevent the material to be cleaned from being thrown into the high-speed airflow area in the middle of the cyclone separation cylinder through the material inlet, and the suction port connected to the miscellaneous suction port Under the action of the miscellaneous fan, the seeds and sundries are sucked out together, causing losses. Therefore, it is generally necessary to set the material inlet away from the center vertical line of the miscellaneous suction port, and because the central vertical line of the miscellaneous suction port of the miscellaneous suction port coincides with the central axis of the cylinder , so the distance between the material inlet and the central axis of the cylinder is larger, so that the diameter of the cyclone separation cylinder is larger, and the size of the miscellaneous suction fan matched with the cyclone separation cylinder is correspondingly increased, and the speed is increased. , which in turn causes the tremor of the whole machine to intensify, reducing the reliability of the whole machine

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