Device for measuring droplet charge-mass ratio of electrostatic spraying droplets

Abstract

The invention relates to the field of agriculture and forestry plant protection technology, and more particularly relates to a device for measuring the droplet charge-mass ratio of electrostatic spraying droplets. The device is characterized by comprising a faraday cylinder (1), a coulometer (2), a water outlet pipe (3), a liquid collecting barrel (4) and a computer (5). The faraday cylinder (1) and the coulometer (2) are connected. The coulometer (2) and the computer (5) are connected. The water outlet pipe (3) is communicated with the bottom of the faraday cylinder (1). The bottom of the liquid collecting barrel (4) is provided with a weight sensor (17). The weight sensor (17) and the coulometer (2) are connected. The liquid collecting barrel (4) is used for collecting the liquid that flows out of the water outlet pipe (3). Compared with the prior art, the technical effects of small charge loss between sealed inner and outer cylinders, easy operation, good measurement real-time performance, high accuracy, high cost performance, convenient movement measurement and the like are realized.

Description

technical field [0001] The invention relates to the technical field of agriculture, forestry and plant protection, in particular to a device and method for measuring the charge-to-mass ratio of electrostatic spray droplets. Background technique [0002] The annual output of pesticides in our country ranks among the top in the world, but our country's plant protection machinery and pesticide spraying technology are relatively backward. At present, the area of ​​cultivated land polluted by pesticides in my country is as high as 13-16 million hm 2 . For a long time, my country's pesticide spraying has been mainly used for ground plant protection, and has remained at the traditional level of large-capacity and large-droplet spraying technology. Not only is the operation efficiency low, but excessive application has caused serious environmental pollution and the decline in the quality of agricultural products. Difficult to meet the needs of sustainable agricultural development. ...

AI Technical Summary

Problems solved by technology

[0006] 1) The gap between the inner and outer cylinders of the traditional Faraday cylinder is not closed, and the droplets are easy to enter the gap between the inner and outer cylinders, causing charge loss and affecting the accuracy of measurement;

[0007] 2) The traditional Faraday cup lacks a liquid collection device, which makes it inconvenient to determine the total mass of spray droplets, which affects the calculation of the charge-to-mass ratio;

[0008] 3) The traditional Faraday cup lacks charge collection and data processing and analysis systems, making it difficult to collect the charge-to-mass ratio of spray droplets in real time

Invention 201310690188.2 mainly measures the charge-to-mass ratio of the charged spray droplets of multiple nozzles on the spray bar. Due to the large size of the equipment and complicated operation, it is not convenient to move around according to the test requirements; Invention 201320503284.7 mainly solves the problem of using Faraday The real-time measurement of the charge-to-mass ratio of charged droplets by the cylinder method, although this invention makes up for the shortcomings of the former, is lacking in the Faraday cylinder design. At the same time, the Faraday cage is not designed with a water outlet pipe, which makes it difficult to collect droplets. In addition, it is inconvenient to dehumidify and remove static electricity after the test.

Both of the above two inventions do not involve the real-time collection of charge-to-mass ratio data

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