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A precision seed metering device and a precision seed metering device group for direct seeding of small seeds

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

Active Publication Date: 2016-09-14
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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  • A precision seed metering device and a precision seed metering device group for direct seeding of small seeds
  • A precision seed metering device and a precision seed metering device group for direct seeding of small seeds
  • A precision seed metering device and a precision seed metering device group for direct seeding of small seeds

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Experimental program
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Effect test

Embodiment 1

[0030] For the convenience of description, the following figure 2 The up, down, left, and right directions of itself are the same. image 3 The right and left direction of itself corresponds.

[0031] Such as figure 1 , figure 2 with image 3 As shown, a precision seed metering device for direct seeding of small seeds includes: a fixed air distribution plate, a seed box, a shaft holder, a disc spring, a shaft, a seed metering plate, a seed guide tube, a seed cleaning device, and a positive pressure joint , Negative pressure connector and frame. A fixed air distribution plate, a seed metering plate, a compressed disc spring and a shaft fixing frame are sequentially tightly sleeved on the shaft. The fixed air distribution plate is sleeved on the shaft and fixed on the frame; the seeding plate is installed on the shaft through the key; the shaft is fixed overhead and sleeved on the shaft, and the disc spring is clamped with the seeding plate, which bypasses the row The seed plate...

Embodiment 2

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

[0039] The parts not mentioned in this embodiment are the same as the first em...

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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 particularly relates to a precision seed metering device and a precision seed metering device group for direct seeding of small seeds. Background technique [0002] Vegetable production in China has continued to develop steadily. The planting area has increased from 262 million mu in 2007 to 308 million mu in 2013, and the output has 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 mainly consists of artificial sowing, thinning and seedling transplanting. The machinery used for planting leafy vegetables mainly includes seedling tray planters and seeding production lines, which require manual or mechanical transplantation. Manual transplanting has high labor costs, high labor intensity, ...

Claims

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Application Information

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Patent Type & Authority Patents(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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