Seed feeding and cleaning device of air-suction type seed metering device

Abstract

The invention relates to a seed feeding and cleaning device of an air-suction type seed metering device. The seed feeding and cleaning device of the air-suction type seed metering device comprises a seed sucking disc, an air sucking shell and a seed cleaning mechanism, wherein a seed sucking hole is formed in the seed sucking disc; the air sucking shell is connected with a vacuum device; the seed cleaning mechanism comprises a seed cleaning execution component arranged at the seed sucking hole, and a first magnet arranged in the air sucking shell; the seed cleaning execution component comprises a guide rod, a sliding seat, a returning spring, a seed cleaning rod and a second magnet; one end of the guide rod is fixedly connected with the seed sucking disc; the other end of the guide rod penetrates through the sliding seat to form a sliding guide structure; the returning spring sleeves the guide rod; one end of the seed cleaning rod is fixed on the sliding seat; the other end of the seed cleaning rod is aligned to the seed sucking hole; the second magnet is arranged on the sliding seat; when the second magnet rotates to be aligned to the first magnet, magnetic poles of opposite ends of the first magnet and the second magnet are same. The seed feeding and cleaning device has the advantages that the seeds are reliably cleaned, and the blockage of the seed sucking hole is avoided; extra power does not need to be added; the energy consumption is reduced.

Description

technical field [0001] The invention relates to an agricultural seeding machine, in particular to a seed sending and clearing device of an air-suction seed metering device. Background technique [0002] Rice direct seeding refers to a cultivation method that directly sows seeds in the field without raising seedlings and transplanting. Large-scale direct seeding of rice can save a lot of labor and alleviate the contradiction of labor seasonal tension, which is of great significance to the realization of light, professional and large-scale rice production. [0003] The sowing method of the rice direct-seeding seeder is to use an air-suction seeder to suck seeds and clear the sucked seeds to drop them into paddy fields. Specifically, the air-suction seed metering device mainly includes a seed delivery and clearing device. The seed delivery and clearing device includes a seed suction plate and a seed cleaning mechanism. The seed suction plate is provided with a seed suction hol...

AI Technical Summary

Problems solved by technology

[0004] When the air-suction seed meter works for a long time, because the seed-suction hole is too small and there are too many impurities in the rice, it is easy to cause the seed-suction hole to be blocked.

The existing seed clearing mechanisms mainly include brush seed clearing mechanism and positive pressure seed clearing mechanism. Among them, the brush seed clearing mechanism is difficult to clean thoroughly, which affects the seed suction of the air-suction seed metering device, thereby affecting the seed metering accuracy; The positive pressure seed cleaning mechanism uses air pressure to blow the seeds away from the seed suction hole. When the seed suction hole is blocked, the seed suction hole cannot be dredged, making the seed suction hole invalid, and when the seeds have a large adsorption force, it cannot be cleared in time. Blowing the seeds away from the suction tray affects the cavitation of the sowing, and the positive pressure seed cleaning also needs to set up an independent air pressure supply device, which consumes a lot of energy

Images