Pulse type vacuum generating device and cotton harvesting device and system

Abstract

The invention discloses a pulse type vacuum generating device and cotton harvesting device and system, comprising a pulse type vacuum generating device and a cotton picking pipeline. The pulse type vacuum generating device comprises a receiving device used for receiving compressed gas, a conversion device used for converting a compressed gas flow into a pulse air flow and an air extractor used for converting the pulse air flow into a vacuum pulse, the receiving device, the conversion device and the air extractor are connected by virtue of a gas pipeline, the cotton picking pipeline is communicated with the air extractor, and the air extractor is provided with a cotton outlet used for outputting cotton bolls. The air extractor can produce the vacuum pulse, insufflation action is of pulse type and is not continuous, after the cotton picking pipeline aims at the cotton bolls, the air extractor generates the vacuum pulse to suck the cotton balls, the action of picking the cotton balls can be instantly completed, and picking speed is improved; meanwhile, the cotton balls are sucked in a pulse manner, branches, leaves and other sundries can be effectively prevented from being sucked, and quality of the picked cotton balls is improved.

Description

technical field [0001] The invention relates to a cotton harvesting device, in particular to a suction type cotton harvesting device. Background technique [0002] Cotton harvesting device that uses at present mainly comprises two kinds of mechanical type grabbing picking and suction type picking. Among them, mechanical picking is mainly to pick cotton bolls through mechanical devices or rotating devices that simulate the actions of human hands. This type of device can reduce the damage caused by cotton branches and leaves to human hands in terms of small machines, but it is large in size and low in efficiency, so it has not been obtained in a large area. Promotion; In terms of large-scale automatic picking devices, for specific machine-picked cotton, it has the characteristics of high efficiency and high harvesting rate, but it cannot pick cotton varieties with higher yield and higher quality in my country. [0003] Suction picking mainly uses a negative pressure fan to inh...

AI Technical Summary

Problems solved by technology

[0004] In terms of large-scale automatic picking devices, since the negative pressure fan can only work continuously, some debris such as branches, leaves, and plastic film will be sucked together. The quality of the picked cotton is not high, and the height of the plant will also be limited.

To solve this problem, large-scale automatic picking devices can only pick a few specific varieties. Unfortunately, the yield of these varieties is not high, and the quality is not very good. Removes mulch, so applications are limited

[0005] In terms of small-scale picking devices, the manual operation of the cotton picking pipe is generally used to pick the cotton bolls. Due to the continuous suction, in order to avoid sucking the branches and leaves and reduce energy consumption, the suction of the picking port cannot be very large. The cotton pipe is thick and cannot be made too long, the range of cotton picking is limited, and the moving speed of the cotton picking pipe is not high, which affects the picking speed; It will shake and affect the picking. At this time, it is still necessary to stabilize the plants with hands, thus affecting the picking speed

[0006] The more important problem is that the fans currently used in suction picking either have insufficient vacuum suction and the exhaustion rate is not enough, or have high vacuum suction but high energy consumption, which is unacceptable to users

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