Vacuum Seed Sowing Device

Abstract

The invention provides a vacuum seed picking and sowing device, and belongs to the field of sowing mechanisms. The device comprises an air pipe shaft, an air cavity, a seed absorbing plate, a cover housing and an air closing mechanism; at least one air hole is formed in one end of the air pipe shaft; the air cavity sleeves the outer side of the air pipe shaft and is in rotating connection with the air pipe shaft; an air intake hole is formed in the seed absorbing plate; the cover housing is fixedly connected with one end with the air hole, of the air pipe shaft; a seed picking cavity and a seed holding cavity are formed in one side of the cover housing, close to the air pipe shaft; the air closing mechanism is arranged in an empty cavity and comprises a fixing frame, and an air closing block for closing the air intake hole; the fixing frame is fixedly connected with the outer wall of the air pipe shaft. According to the device, the air closing block of the air closing mechanism is arranged to greatly reduce the negative pressure for seed absorbing, thus the absorbing force to the seeds is reduced, the seeds can be simply shifted into a seed receiving box with weak force, and as a result, the seeds cannot be damaged, and the circumstances such as ignoring of sowing can be greatly avoided; the ignoring rate can be reduced while the integrity of the seeds is ensured.

Description

technical field [0001] The invention relates to the field of sowing machinery, in particular to a vacuum seed sowing device. Background technique [0002] The air-suction drum-type precision on-demand machine is a kind of sowing machine for combined operations. It can complete multiple tasks such as fertilization, filming, sowing, and soil covering at one time. Precise sowing is widely used in parts of Inner Mongolia, Shanxi, Shaanxi, Ningxia, Xinjiang, Northeast China and Hebei Province. [0003] The vacuum seeding and sowing device is an important part of the air-suction drum-type precision seeder. The suction force is generated by the high-speed operation of the fan, so that the suction hole of the seed suction plate absorbs the seeds and rotates. In the box, the seeds in the inoculation box are sown through the duckbill. [0004] The existing seed pulling mechanism is divided into a hard pulling mechanism and a soft pulling mechanism, and due to the existence of negati...

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Problems solved by technology

[0004] The existing seed pulling mechanism is divided into a hard pulling mechanism and a soft pulling mechanism, and due to the existence of negative pressure in the cavity, the adsorption force on the seeds is relatively strong to ensure that the seeds are not easy to fall during the rotation of the seed suction plate. The force of the dialing mechanism is relatively strong, forcibly pulling the seeds adsorbed at the suction hole will cause certain damage to the seeds, thereby affecting the germination rate, etc. There is a phenomenon that the seeds are not picked up, resulting in missed sowing

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