Automatically cleaning suction nozzle

A technology of self-cleaning and cleaning needles, which is applied in the direction of single-grain planters and planter parts, etc. It can solve the problems of suction nozzle failure, affecting adsorption capacity, suction nozzle hole blockage, etc., and achieve the effect of simple structure and reliable action

Inactive Publication Date: 2012-05-16
崔敏娟
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AI Technical Summary

Problems solved by technology

For seeds with a high degree of cleanliness, it can successfully complete the sowing function, but for seeds with a low degree of cleanliness, there are seed coats and dust mixed in them. When the seeds are adsorbed, these impurities are easy to be sucked. The nozzle hole will block the nozzle hole or affect its adsorption capacity. In severe cases, the nozzle will fail and affect the reliability of the planter.

Method used

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Embodiment Construction

[0021] Figure 4 The structural composition diagram of the self-cleaning suction nozzle of the present invention is given. As shown in the figure, a cleaning needle 42 driven by a piston 44 is installed inside the suction nozzle housing 41. The cleaning needle 42 is a rod-shaped round rod. The outer diameter corresponds to the inner diameter of the nozzle hole of the nozzle housing 41 and is slightly smaller. When it goes down, it can penetrate into the nozzle hole; the bottom of the piston 44 is equipped with a return spring 43, and there is a The gap 45 for gas circulation.

[0022] Its action principle is as follows: when the suction nozzle is under negative pressure, under the action of the return spring 43 elastic force, etc., the piston 44 is in a floating state, and the side gap 45 ensures the smooth flow of the seed suction channel, exposing the suction nozzle hole to complete the seed adsorption; During this process, when the vacuum generator is converted from negati...

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Abstract

The invention discloses an automatically cleaning suction nozzle. The suction nozzle comprises a suction nozzle housing, a cleaning needle driven by a piston is arranged in the suction nozzle housing, the lower part of the piston is provided with a return spring, and the side of the piston is provided with a gap for the gas circulation. The cleaning needle is driven by the piston, the piston is in an upward floating state under the action of elastic force of the return spring when the suction nozzle is in a negative pressure environment, seed suction channels are guaranteed to be unblocked through the side gaps, and suction nozzles are exposed to complete the seed adsorption; and in the seed sowing process, the instant the negative pressure of a vacuum generator is transmitted to positive pressure, the piston acted by outside force overcomes the elastic force of the return spring and downward moves, and the cleaning needle penetrates into the suction nozzle apertures to poke out foreign materials, so the cleaning of the suction nozzle apertures is completed. The suction nozzle of the invention, which has the advantages of simple structure and reliable motion, can satisfy low cleanliness seed suction and sowing operations of a seeder.

Description

technical field [0001] The invention belongs to the field of agricultural machinery, in particular to a suction nozzle applied to needle seeders. Background technique [0002] Today, with the rapid development of modern agriculture, horticultural production technology and production specialization, industrial plug seedling cultivation technology has been popularized and promoted as a new technology in our country. Compared with the traditional seedling raising method, it not only saves the cost of seeds, but also avoids the damage caused by manual seedling transplanting in the traditional seedling raising method, and has the advantages of neat growth of seedlings; high seedling rate; Root damage, no nesting; low probability of disease transmission and other advantages. [0003] This kind of plug seedling production technology carried out in an artificially controlled environment (that is, a modern greenhouse) requires that each stage of production be carried out systematica...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C7/04A01C7/20
Inventor 崔敏娟
Owner 崔敏娟
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