Elastic seed discharge device for pneumatic seeding unit

Abstract

The invention relates to an elastic seed discharge device for a pneumatic seeding unit and belongs to the technical field of agricultural machinery. The elastic seed discharge device comprises a support long shaft welding part, seeding unit covers, a seeding roller, rubber rollers, an elastic cylindrical pin, a support long shaft fixing seat and a fixing plate and is characterized in that the seeding roller is provided with seed sucking holes, and the seeding unit covers are fixed to the ends of the seeding roller; the support long shaft welding part is formed by welding a support long shaft,roller support shafts and support arms, and the ends of the support long shaft are connected with the seeding unit covers through bearings; the support long shaft fixing seat is fixed to the fixing plate through bolts and connected with the end of the support long shaft through the elastic cylindrical pin; the fixing plate is fixed to the frame of the pneumatic seeding unit; the rubber rollers sleeve the roller support shaft and closely attach to the seeding roller, and the number of the rubber rollers is consistent to the row number of the seed sucking holes in the seeding roller. The elasticseed discharge device has the advantages that the rubber rollers are used as the air discharge parts, the seeding roller can be tightly combined with the rubber rollers during rotation to allow seedsto completely get rid of the sucking force of the internal negative pressure in the seeding roller and naturally fall out of the seeding roller, and seeding uniformity is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to an elastic seed unloading device for a pneumatic seed metering device. Background technique [0002] Both at home and abroad have been committed to the research of seed processing technology and precision seeding technology. In terms of precision seed metering devices, since the 1970s, western developed countries have carried out sufficient experimental research on pneumatic precision seed metering devices, and have achieved certain theoretical results. [0003] At present, the pneumatic precision seed metering devices produced and used at home and abroad mainly include three types: air pressure type, air blowing type, and air suction type according to the seed metering methods; according to the seed metering device structure, they can be divided into vertical disc type and roller type. There are two types. The seed unloading method of the pneumatic s...

AI Technical Summary

Problems solved by technology

The seed unloading method of the pneumatic seed meter generally adopts that the unloading area is in the area where the pressure disappears outside the pressure chamber. When the seeds are transferred to the unloading area with the seed suction plate, the seeds will fall off naturally under the action of their own gravity due to the disappearance of the pressure. , this kind of unloading method solves the problem of seed damage during the unloading process. The disadvantage of this method is that the sealing effect of the pressure chamber is not good, and it is easy to cause pressure loss.

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