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Precision seed-metering device and precision seed-metering device group for direct sowing of small-granular seeds

A kind of seed metering device and seed technology, which is applied in the fields of planter parts, agricultural gas emission reduction, agriculture and animal husbandry, etc. It can solve the problem of high requirements on the shape and specification of small seeds, direct sowing and precision sowing of small seeds. Ideal, complex structure and other issues, to achieve the effect of reducing the transplanting process, improving stability, saving labor and production costs

Active Publication Date: 2015-07-08
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the disclosed seed metering devices have certain requirements on the shape and specifications of small seeds, and generally require small seed disturbing devices. Unsatisfactory seeding and precision seeding

Method used

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  • Precision seed-metering device and precision seed-metering device group for direct sowing of small-granular seeds
  • Precision seed-metering device and precision seed-metering device group for direct sowing of small-granular seeds
  • Precision seed-metering device and precision seed-metering device group for direct sowing of small-granular seeds

Examples

Experimental program
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Effect test

Embodiment 1

[0030] For the convenience of description, the up, down, left, and right directions referred to below and the attached figure 2 The up, down, left, and right directions of itself are consistent, and the so-called front and rear directions are the same as those attached image 3 The right and left directions of itself correspond.

[0031] Such as figure 1 , figure 2 and image 3 As shown, a precision seed metering device for direct seeding of small seeds, including: a fixed gas distribution plate, a seed box, a shaft fixing frame, a disc spring, a shaft, a seed metering disc, a seed guide tube, a seed cleaning device, and a positive pressure joint , Negative pressure connector and frame. The fixed air distribution disc, the seeding disc, the compressed disc spring and the shaft fixing frame are tightly sleeved on the shaft in sequence. The fixed air distribution disc is vacantly sleeved on the shaft and fixed on the frame; the seeding disc is installed on the shaft throu...

Embodiment 2

[0038] A precision seed metering device for direct seeding of small seeds comprises a precision seed metering device for direct seeding of small seeds and a plurality of couplings. A kind of precision seed metering device for direct seeding of small seeds is set side by side and arranged in rows; a coupling connects the shafts of two adjacent precision seed metering devices for direct seeding of small seeds through a connecting key, where the connecting key is set On the shaft, it is located at the right end of the shaft fixing frame, and the distance between two precision metering devices for direct seeding of small-grained seeds can be adjusted according to actual needs, thereby changing the sowing row spacing of crops to adapt to the sowing of different crops. Then, a precision seeder group for direct seeding of small seeds is hooked on the tractor, so that the tractor can sow seeds in multiple rows in the field.

[0039] Parts not mentioned in this embodiment are the same ...

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Abstract

The invention relates to a precision seed-metering device and a precision seed-metering device group for direct sowing of small-granular seeds. The precision seed-metering device includes: a fixed gas distribution plate fixed on a rack and a seed plate fixedly sleeving a shaft. The fixed gas distribution plate separately sleeves the shaft. The seed plate is arranged closely to the fixed gas distribution plate. The fixed gas distribution plate is provided with a negative pressure chamber and a positive pressure chamber. An end surface, which faces to the fixed gas distribution plate, of the seed plate is provided with a plurality of vent holes arranged in the peripheral direction uniformly. The side surface of the periphery of the seed plate is provided with a plurality of seed-discharging suction holes which are arranged in the peripheral direction uniformly to form a circle. The number of the vent holes is equal to that of the seed-discharging suction holes and each vent hole is communicated with each corresponding seed-discharging suction hole. The vent holes are rotated with the rotation of the seed plate, wherein one vent hole is communicated with the positive pressure chamber for discharging seeds while the other partial vent holes are communicated with the negative pressure chamber for sucking the seeds. The precision seed-metering device can achieve direct sowing and precision sowing of small-granular seeds, can be used for single-row sowing and multiple-row sowing and belongs to the field of design of agricultural machinery.

Description

technical field [0001] The invention belongs to the field of agricultural machinery design, and in particular relates to a precision seed metering device and a precision seed metering device group for direct seeding of small seeds. Background technique [0002] China's vegetable production has continued to develop steadily. The planting area increased from 262 million mu in 2007 to 308 million mu in 2013, and the output increased from 547 million tons in 2007 to 706 million tons in 2013. The planting of leafy vegetables accounts for about 1 / 3 of the total vegetable production, and the demand for leafy vegetables continues to increase. The planting of leafy vegetables is mainly based on artificial seedling thinning and seedling transplanting. The machinery used for sowing leaf vegetables mainly includes seedling tray seeders and seeding production lines, which require manual or mechanical transplanting. Manual transplanting has high labor costs and high labor intensity. The p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C7/20
CPCY02P60/00Y02P60/20
Inventor 李志伟张静符耀明吴钢周士琳孙芳媛韦钟继黄国庆简锦涛聂柳金叶绿黄大榕
Owner SOUTH CHINA AGRI UNIV
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