Efficient seed separator

Abstract

The invention relates to an efficient seed separator and belongs to the technical field of agricultural machines. A rack of the separator is provided with a feeding hopper, and the center is providedwith an air sucking opening. The portion below the feeding hopper is opposite to a feeding opening of a screening part. The screening part contains five layers of efficient seed separating sieves. Thehigh end of the highest layer and the high end of the second highest layer of the upper group are connected below the feeding opening in a receiving manner, impurity discharging grooves are formed inthe lower ends correspondingly, and material pouring plates are installed under the highest layer and the second highest layer correspondingly. The separating sieve on the middle layer in the lower group and the separating sieves of the upper group incline reversely, the high end of the separating sieve on the middle layer is connected under the lower ends of the material pouring plates of the highest layer and the second highest layer in a receiving manner, and a material pouring plate parallel to the separating sieve is installed below the separating sieve on the middle layer. The high endof the second lower layer and the high end of the lowest layer of the lower group are connected with the lower end of the middle layer in a receiving manner, impurity separating plates parallel to thesecond lower layer and the lowest layer are installed under the second lower layer and the lowest layer correspondingly, and the lower ends of the second lower layer and the lowest layer lead to a seed discharging opening through an air floating sieve. A wind outlet of a wind blower on the bottom of the rack leads to a rear wind sucking channel. The efficient seed separator remarkably reduces theimpurity content rate, improves screening efficiency and ensures operation quality for a long time.

Description

technical field [0001] The invention relates to a seed cleaning machine, in particular to a high-efficiency seed cleaning machine, which belongs to the technical field of agricultural machinery. Background technique [0002] Screening and cleaning is a common means of cleaning rapeseed and other seeds. It can be seen from the search that the Chinese patent document with the application number 201820337323.3 discloses a double-layer counter-directional cleaning screen structure for a rapeseed combine harvester, including a mounting frame, a shaking plate and a drive shaft. Vibrating screen, the shaking plate is fixedly installed above the double-layer vibrating screen through a support frame, the side of the shaking plate is connected with a connecting rod through a chute, and is fixedly connected with the side of the upper vibrating screen through the connecting rod , the side of the installation frame is fixedly installed with a driving wheel through a sliding groove, and ...

AI Technical Summary

Problems solved by technology

Although the double-layer anisotropic cleaning screen structure of the rapeseed combine harvester can improve the screening quality of seeds to a certain extent, there are still the following shortcomings: 1) The screening area is small, and the processing efficiency of seeds is low; 2) Wind selection and Insufficient screening, it is difficult to completely remove the impurities in the seeds; in addition, the replacement of the sieve surface is not convenient, so the adaptability is not good

However, practice shows that the above-mentioned prior art has the following points to be improved: 1) The sieve surface is flat, not only the sieving efficiency determined by its sieving area can be further improved, but also the seeds completely rely on vibration sieving, and the screening effect needs to be further improved; 2) The diameter of the sieve cleaning pinball is uniform, and the collision movement during sieve cleaning is easy to form a certain regularity, and the effect is not ideal; 3) Considering easy wear and tear, the thickness of the sieve is relatively thick, and it is easy to block

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