Pipeline pressure control device for boom sprayer

Abstract

The invention provides a pipeline pressure control device of a boom spraying machine. The pipeline pressure control device comprises a liquid medicine tank, a filter, a liquid pump, a pressure stabilizing air chamber, a high-speed switch solenoid valve and a sprayer, wherein the filter, the liquid pump, the pressure stabilizing air chamber and a proportional overflow valve are sequentially connected through pipelines; the sprayer is connected with a main pipeline of a spray boom through the high-speed solenoid valve; liquid medicine in the liquid medicine tank is filtered by the filter and then sent to the liquid pump, and is further transferred, through the liquid pump, to the main pipeline of the spray boom; the liquid medicine is regulated in the main pipeline of the spray boom by the high-speed switch solenoid valve, and the like, and then is sprayed out by the sprayer; redundant liquid medicine in the proportional overflow valve is returned to the liquid medicine tank. According to the pipeline pressure control device of the boom spraying machine disclosed by the invention, on a basis of a common boom spraying machine, a pipeline pressure controller is additionally arranged, so that the pipeline pressure control device is simple in structure, low in requirement on operating personnel, and the pressure stabilizing air chamber is additionally provided to counteract pressure pulsation caused by frequent switching on and switching off of the high-speed solenoid valve at the sprayer, in this way, stabilization of pipeline pressure is facilitated, and a spraying effect is guaranteed.

Description

technical field [0001] The invention relates to the technical field of sprayer accessories, in particular to a pipeline pressure control device for a boom sprayer. Background technique [0002] In the process of farmland plant protection operations, boom sprayers are often used to apply pesticides. The change of spray pressure will change the real-time spray flow rate and atomization effect, and will distort the distribution of spray volume deposition and reduce the utilization rate of pesticides. Due to the complex and changeable working conditions in the field, it is difficult to keep the spray pressure constant due to the comprehensive influence of factors such as the speed of the sprayer, the change of the set spray flow rate, the fluctuation of the output pressure of the liquid pump, and the pressure fluctuation of the solenoid valve switch at the nozzle. In particular, the output pressure fluctuation of the liquid pump and the pressure fluctuation of the solenoid valv...

AI Technical Summary

Problems solved by technology

The pressure stabilization link of the controller does not have a device to deal with the pressure pulsation caused by the frequent opening and closing of the high-speed switching solenoid valve of the nozzle. Only the proportional relief valve is used to adjust the spray pressure, and the response speed is slow, and the actual effect cannot be guaranteed.

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