Exhausting separating cleaning apparatus for combine harvester

Abstract

The invention discloses an exhausting separating cleaning apparatus for combine harvesters. The invention comprises a reciprocating wobbling sieve driven by a driving mechanism installed on the frame. The sieve comprises a sieve body and a grain-gathering bin whose bottom is equipped with a grain exit. The sieve body comprises a sieve base plate and a square baffle plate. The front part of the sieve nest is equipped with a sieve base plate; the back part is equipped with a grain entrance and the upside is equipped with a drawing fan and a wind-gathering cover. The invention has a good cleaning effect that grains and weeds can be efficiently separated and the separated grains contain little foreign matters; the invention is of simple structure and low power consumption and occupies small space, thus is in favor of raising whole machine performance of harvesters.

Description

technical field

[0001] The invention relates to a rice and wheat combine harvester, in particular to a cleaning device for separating grain and grass of the combine harvester. Background technique

[0002] At present, most of the grain cleaning devices on combine harvesters that separate grains from weeds use an airflow sieve structure formed by a combination of multi-layer sieves and wind power devices. The airflow flows through the entire sieve surface from one end and blows to the other end. The reciprocating motion of the sieve drives the grains to separate from the weeds and fall out of the sieve holes, while the weeds continue to move to the other end under the action of the wind and are finally discharged. Outside the machine, in order to improve the separation effect, the general grain cleaning device has multi-layer sieves with different sieve holes. Together with the driving mechanism, the entire grain cleaning mechanism is bulky, accounting for one-third of the wh...

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