A kind of mixing spray head which controls spraying concentration by liquid pressure

Abstract

The invention discloses a pesticide mixing spraying head capable of controlling spraying concentration through liquid pressure. The pesticide mixing spraying head comprises a main spraying head body, a needle valve, a needle valve seat, a front spraying head cover and a rear spraying head cover; a conical sealing part is arranged between the needle valve and the needle valve seat; a front stock solution channel is formed in the front of the conical sealing part, and a rear stock solution channel is formed in the back of the conical sealing part; a pesticide mixing chamber which is communicated with the front stock solution channel is formed between the front spraying head cover and the needle valve seat; a stock solution hole which is communicated with the rear stock solution channel is formed in the main spraying head body; a pressure chamber is formed in the rear end of the main spraying head body; a piston is arranged at the rear end of the needle valve; the piston is matched with the interior of the pressure chamber; a pressure hole which is communicated with the pressure chamber is formed in the main spraying head body; a spring is also arranged at the rear end of the needle valve; a water inlet hole is formed in the main spraying head body; a water inlet channel which is communicated with the water inlet hole and the pesticide mixing chamber is formed in the needle valve seat. According to the pesticide mixing spraying head, pesticide can be mixed automatically during operating; the pesticide concentration can be controlled; the purposes of adjusting measures to local conditions and spraying the pesticide precisely in a precision farming way are achieved.

Description

technical field [0001] The invention relates to agricultural pesticide application equipment, in particular to a spray nozzle for mixing pesticides controlled by liquid pressure. Background technique [0002] In the process of crop planting, spraying pesticides is an effective measure to prevent threats such as diseases, insect pests and weeds and to regulate growth. However, in recent years, various problems caused by excessive application of pesticides have become more and more prominent. Depending on the specific situation and the severity of the pests, spraying different concentrations of liquid medicine can not only achieve the effect of prevention and control, but also avoid excessive abuse of pesticides. [0003] There are generally the following ways to adjust the amount of pesticide spraying. One is to prepare the corresponding concentration of the chemical solution first, and then spray it in different areas. Or three sprays. However, these two methods are labor-...

AI Technical Summary

Problems solved by technology

[0005] 1. The mixture of pesticides is uniformly mixed, resulting in low utilization rate of pesticides;

[0006] 2. The mixing of pesticide liquid is mostly manual labor, and the efficiency is low;

[0007] 3. The coordination efficiency of pesticide liquid and spraying device is limited

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