Pneumatic drum-type rice seedling raising and seeding device

Abstract

The invention relates to a pneumatic drum-type rice seedling raising and seeding device and belongs to the technical field of agricultural machinery. The pneumatic drum-type rice ling raising and seeding device comprises a rack, a seeding drum part and a seed box vibrating part, wherein the seeding part comprises a hollow shaft supported on the rack and a seed sucking drum sheathed on the hollow shaft, the hollow shaft has a vent hole for realizing negative pressure of the seed sucking drum, the outer surface of the seed sucking drum has seed sucking holes which are axially arranged and circumferentially distributed at intervals, an elastic compression roller mechanism is installed in the seed sucking drum and mainly consists of elastic compression rollers which are elastically pressed and supported on the inner wall of the seed sucking drum and correspond to the seed sucking holes at seeding positions in a sealing manner, and the seed box vibrating part is provided with a seed box with the front end being open and enveloped at a seed sucking position on an excircle of the seed sucking drum. Compared with the prior art, the pneumatic drum-type rice seedling raising and seeding device has the advantages of simple structure, economical cost and easiness in production, can be used for realizing target precise seeding, and is very suitable for the precise seeding of flat tray rice seedling raising with small seeding rate and plug tray rice seedling raising with 1-2 grains per hole.

Description

technical field [0001] The invention relates to a sowing device, in particular to an air-suction drum-type rice seedling sowing device suitable for raising rice seedlings in blanket-shaped seedling trays and rice pot seedling trays, and belongs to the technical field of agricultural machinery. Background technique [0002] At present, a mechanical seeding device is widely used in rice industrialized seedling raising and sowing lines, and its seeding wheels adopt types such as outer grooved wheels, spiral grooved wheels or sockets. Although this type of seeding device can meet the sowing requirements of conventional rice blanket seedling seedling raising with a seeding rate of about 100 grams per plate, it cannot meet the requirements of about 60 grams per plate for hybrid rice and super rice blanket seedlings. The uniform sowing requirements of the small seeding amount can not meet the precise sowing requirements of 1 to 2 seeds per hole for rice seedling seedlings. Due to t...

AI Technical Summary

Problems solved by technology

However, when this kind of sowing device sows, the sowing disc should not only stay briefly at the two positions of the vibrating seed supply disc and the seedling position of the seedling disc, but also move back and forth between the two. The precision of positioning stop and timing movement is high, and there are The main disadvantages: first, the mechanism is complicated and the cost is high; second, the work efficiency of gap sowing is low

However, the sowing drum has a complex structure, high precision requirements for parts manufacturing and installation, poor workmanship, and there is sliding friction between the seed drop chamber or the sealing partition and the outer drum. After the parts are worn out, the isolation between the positive and negative pressure areas will be destroyed, thereby affecting to the stability of seeding quality

[0005] As mentioned above, the air-suction rice seedling seeding device in the prior art has disadvantages such as complex structure, high cost, poor manufacturing process, and low stability of seeding quality.

Therefore, there is currently no widely used sowing device that can meet the needs of hybrid rice or super rice blanket-shaped seedling seedling seedling seedling seeding and rice plug seedling seedling precision sowing requirements.

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