Internal inflation suction type high-speed precision seed metering device

A seed metering and high-speed technology, which is applied to the field of high-speed precision seed metering with internal air suction, can solve the problems of poor adsorption performance, high leakage charging rate, and short filling time, so as to be suitable for high-speed operation and reduce leakage. The effect of increasing the charging rate and improving the working speed

Inactive Publication Date: 2019-09-06
HUAZHONG AGRI UNIV
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Problems solved by technology

[0003] The traditional air-suction seed metering method is that the seeds are adsorbed on the suction hole under the action of a single negative pressure airflow. When the seed metering disc is rotating at a high speed, the filling time is short and the adsorption performance is not good, which may easily lead to a leakage rate. high phenomenon

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  • Internal inflation suction type high-speed precision seed metering device
  • Internal inflation suction type high-speed precision seed metering device
  • Internal inflation suction type high-speed precision seed metering device

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Such as figure 1 The shown inner air-suction high-speed precision seed metering device includes a front housing 18 with a seed inlet 29 and a positive pressure hole 31, a rear housing 2 with a seed inlet 42 and a negative pressure hole 39, and a seed tray. 20. The unloading wheel 6 and the seeding shaft 26, wherein, the edge of the front housing 18 is provided with a plurality of first through holes 30 along the circumference, and the edge of the rear housing 2 is provided with the first through holes 30 to match the circumference. A threaded hole 36, the front housing 18 and the rear housing 2 are arranged in conjunction and fixedly connected by hex socket head cap screws 19, and the seed tray 20 is located in the space formed by the coupling of the front housing 18 and the rear housing 2 . Such as figure 2 , 3 , 4, one e...

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Abstract

The invention discloses an internal inflation suction type high-speed precision seed metering device, which comprises a front shell body, a rear shell body, a seed metering disc, a seed discharging wheel and a seed metering shaft, wherein a plurality of combined type holes formed by filling grooves and inoculation holes are uniformly distributed on the wall thickness of the seed metering disc along the circumferential direction; type hole replacement plates with the same contour as the groove bottoms of the filling grooves are arranged at the groove bottoms of the filling grooves; bosses are formed in the type hole replacement plates; suction holes penetrating through the bosses and the type hole replacement plates are formed in the boss; third through holes for mounting the bosses are formed in the groove bottoms of the filling grooves; and the suction holes are communicated with the filling grooves. The combination of the inner inflation type and the air suction type is adopted, andthus the seeds are not only subjected to the suction force of a single air flow, but also subjected to the action of gravity and centrifugal force of the seeds, so that the inflation form is added, the reduction of the leakage and filling rate is favourable and the operation speed is improved.

Description

technical field [0001] The invention belongs to the technical field of sowing in agricultural machinery, and in particular relates to an inner air-suction type high-speed precision seed metering device. Background technique [0002] Precision seeding is an inevitable trend in the development of modern planting industry. It has the advantages of saving labor and cost, improving crop yield and quality, etc. The main factor in achieving precision seeding depends on the performance of the seed meter. Precision seed meters can be divided into mechanical type and pneumatic type according to their working principle. The mechanical seed metering device is simple in structure, low in cost, and easy to use and maintain, but it has strict requirements on the shape and size of seeds and a high rate of damage to seeds, which cannot meet high-speed precision sowing operations. At present, pneumatic seed metering devices are widely used in precision seeders at home and abroad. It has str...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C7/08
CPCA01C7/082
Inventor 夏俊芳胡梦杰周勇刘政源张梦月李东东
Owner HUAZHONG AGRI UNIV
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