Pneumatic rice metering device with integrated disc chamber

Abstract

The invention relates to a pneumatic rice metering device with an integrated disc chamber, which includes a seed box, a connecting piece, a seed metering shell, a seed metering plate, an air chamber, a negative pressure pipe shell, a seed metering shaft, a seed unloading device, Seed tube, brush; the seed box is connected to the seed housing through the connector, the seed housing is connected to the negative pressure pipe housing, the seed disc is connected to the air chamber and is located between the seed housing and the negative pressure as a whole. In the space surrounded by the pipe shell; the front side of the seeding tray close to the seeding shell is the seed filling area, the rear side of the seeding tray is the negative pressure area, and there are multiple seed suction holes on the seeding tray; the brush It is relatively fixed with the negative pressure pipeline housing and the brush head is against the rear end face of the seed discharge disc; the seed discharge shaft drives the seed discharge disc and the air chamber to rotate relative to the seed discharge housing and the negative pressure pipeline housing. The rotating structure and disc chamber structure of the present invention are very simple, easy to seal, greatly reduce the fluctuation of air pressure when the seed meter is working, and improve the seed suction precision, belonging to the technical field of agricultural seeding machinery.

Description

technical field [0001] The invention relates to an agricultural seeding machine, in particular to a pneumatic rice metering device with an integrated disc chamber. Background technique [0002] Rice is the food crop with the widest planting area, the highest per unit yield, and the largest total output in China. my country's rice output ranks first in the world. Rice production is related to my country's food security, agricultural income increase, and farmers' income increase. Rice direct seeding is a sowing technology that directly sows rice seeds in the field, which has the advantages of labor saving and low cost. At present, the seeding methods of rice direct seeding are mainly divided into mechanical type and pneumatic type. The mechanical seed metering device mostly uses a hole or grooved wheel type seed metering device. By changing the size of the hole or grooved wheel, the control of the seeding amount is realized. , but it is impossible to precisely control the bro...

AI Technical Summary

Problems solved by technology

At present, the seeding methods of rice direct seeding are mainly divided into mechanical type and pneumatic type. The mechanical seed metering device mostly uses a hole or grooved wheel type seed metering device. By changing the size of the hole or grooved wheel, the control of the seeding amount is realized. , but it is impossible to precisely control the broadcast volume

Compared with the mechanical seed metering device, the existing pneumatic seed metering device can achieve precise and small amount of seeding, but the air pressure fluctuates greatly, is unstable, and the air tightness is not enough, which affects the seeding accuracy to a certain extent

[0003] In the prior art, there are also seed metering devices in which the disk chambers rotate together, but this type of seed metering device either has a complicated rotating structure for driving the disk chambers, or has a complicated structure of the disk chambers.

Images