Synchronous air-blowing soil-covering type seed throwing device of rice direct-seeding seed metering device

Abstract

The invention discloses a synchronous air-blowing soil-covering type seed throwing device of a rice direct-seeding seed metering device. The synchronous air-blowing soil-covering type seed throwing device of the rice direct-seeding seed metering device is characterized in that a stop valve is installed at an air outlet of an air compressor, an air inlet of a barometer is connected with an air outlet of the stop valve through a pneumatic conveying pipe, and an air inlet of an air volume control valve is connected with an air outlet of the barometer through a pneumatic conveying pipe; an air inlet of a pressure transmitter is connected with an air outlet of the air volume control valve through a pneumatic conveying pipe, and an air inlet of a nozzle of a seed throwing pipe is connected with an air outlet of the pressure transmitter through a pneumatic joint; a seed guiding joint is fixedly connected with the bottom of the seed metering device, and a seed inlet of the seed throwing pipe is connected with the bottom of the seed guiding joint; the air compressor provides constant positive-pressure airflow, the seed metering device provides uniform rice seed flow, rice seeds and the positive-pressure airflow are mixed in the seed throwing pipe, and the seed throwing pipe sprays out mixed fluid at a high speed. The synchronous air-blowing soil-covering type seed throwing device of the rice direct-seeding seed metering device has the advantages of being large in air pressure adjustable range, long in stabilization time and high in seed throwing airflow velocity.

Description

technical field [0001] The invention belongs to the technical field of agricultural machinery, and in particular relates to a seeding device for a synchronous air-blown soil-covered direct-seeding seed metering device for rice. Background technique [0002] my country's rice planting area is about 450 million mu. Rice is not only the largest planting area in my country, but also the food crop with the highest unit yield and the largest total output, accounting for about 40% of the total grain output. Rice production has become an important constraint on my country's food production safety factor. With the transfer of rural labor force, the cost of agricultural production is increasing day by day. In recent years, the rice direct seeding technology, which simplifies the planting mode, has been widely promoted because of its advantages of cost saving, labor saving and high operation efficiency. , susceptible to rodent damage, bird damage, sun exposure, rain erosion, and early ...

AI Technical Summary

Problems solved by technology

Therefore, starting from the seeding stage of the direct-seeding rice metering device, a synchronous air blowing soil-covering type rice direct seeding metering device is designed to realize the covering of rice direct seeding, ensure the emergence rate of direct-seeding rice, and effectively solve the problem of rice seeds being exposed on the mud surface. Difficulties causing direct-seeding rice to be comprehensively difficult and uneven growth

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