High-throughput threshing and cleaning device for combine harvester

Abstract

The invention discloses a high-throughput threshing and cleaning device for a combine harvester, relates to the technical field of agricultural equipment, and solves the technical problem about how to carry out cyclic screening in the threshing and cleaning device. The high-throughput threshing and cleaning device comprises a threshing device, a cleaning device and a grain conveying device; the cleaning device comprises a first fan, a double-layer screen cloth vibrating screen, a separating device, a first conveying device and a second fan; the double-layer screen cloth vibrating screen is located between the threshing device and the grain conveying device, a first screen cloth waste outlet of the double-layer screen cloth vibrating screen communicates with a feeding port of the separating device, and the first conveying device communicates with a feeding port of the double-layer screen cloth vibrating screen and a discharging port of the separating device; the first fan is used for outputting high-speed airflow towards the outside of the threshing and cleaning device between the double-layer screen cloth vibrating screen and the threshing device; and the second fan is used for outputting high-speed airflow towards the outside of the threshing and cleaning device between the double-layer screen cloth vibrating screen and the grain conveying device, so that high throughput is achieved while high-quality screening of crops is realized.

Description

technical field [0001] The invention relates to the technical field of agricultural equipment, in particular to a high-throughput threshing and cleaning device for combine harvesters. Background technique [0002] A combine harvester refers to a machine that can simultaneously complete the harvesting, threshing, separation and cleaning of grains and finally obtain clean grains. The use of combine harvesters can greatly improve labor productivity and reduce labor intensity. According to the power configuration, it can be divided into traction type, self-propelled type and suspension type. The combine harvester combines harvesting, threshing and cleaning in one unit, enabling farmers to complete harvesting, threshing and cleaning in a single operation. Thereby saving manpower and material resources, greatly reducing the burden on farmers. [0003] However, there are still some problems in the combine harvester at present. 1. After the crops pass through the threshing device...

AI Technical Summary

Problems solved by technology

[0003] However, there are still some problems in the combine harvester at present. 1. After the crops pass through the threshing device of the combine harvester, there will still be a little grain on the stem, which has the problem of incomplete threshing; Multi-screening, the grains that fail the first screening are directly discharged from the combine harvester, which will obviously greatly increase the loss rate and cause waste

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