Air-suction indent type roller seed-metering device capable of automatically clearing seeds, preventing blocking and adjusting seeding rate

Abstract

The invention discloses an air-suction indent type roller seed-metering device capable of automatically clearing seeds, preventing blocking and adjusting the seeding rate, and belongs to agricultural machinery. A cylinder type seed filling cup is fixedly arranged in a pocket hole in an air suction pocket type roller, a suction nozzle body is axially and movably arranged in a cup hole of the cylinder type seed filling cup through threads, an air suction hole and a hollow cavity are coaxially and sequentially formed in the suction nozzle body in the axial direction and are communicated with each other, and the cylinder type seed filling cup is communicated with the hollow cavity through the air suction hole. A cross-shaped groove, a through hole and a limiting stop pin are respectively arranged on the suction nozzle body, a gravity rod which is coaxially and fixedly provided with a seed cleaning anti-blocking needle can be axially inserted into a hollow cavity of the suction nozzle body in a reciprocating motion manner, the seed cleaning anti-blocking needle is in insertion or separation insertion fit with an air suction hole in the suction nozzle body, and the gravity rod is in contact or separation contact fit with the limiting stop pin; according to the device, the seeding rate can be adjusted and changed according to different rice varieties and agricultural requirements, the application range is wide, the adaptive capacity is high, the seed filling, discharging and anti-blocking effects are good, the operation quality is high, and the use is reliable.

Description

technical field [0001] The invention belongs to agricultural machinery, and mainly relates to an air-suction seed metering device used for rice seedling raising and sowing. Background technique [0002] At present, the air-suction socket-type roller seed metering device is mostly used for rice seedling seeding and seeding operations. Based on the advantages of mechanical socket filling, seeding and air-suction seed metering device, the seed metering device has a simple structure. , The reliable characteristics of filling and sucking seeds have become one of the main models for rice seedling raising and sowing operations. However, in the practice of production operations, it is found that the rice seeds adsorbed in the seed suction holes are prone to plugging faults, which are not only difficult to remove, but also affect and reduce the quality of sowing operations, reduce the sowing rate, and increase the empty sowing rate. In addition, the currently used air-suction socket...

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Problems solved by technology

However, in the practice of production operations, it is found that the rice seeds adsorbed in the seed suction holes are prone to plugging failures, which are not only difficult to remove, but also affect and reduce the quality of sowing operations, reduce the sowing rate, and increase the empty sow

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