Pump assembly, spraying system, mobile device and spraying method

Abstract

A pump assembly (100), a spraying system (10), a mobile device (1000) and a spraying method. The pump assembly (100) includes a water pump device (110), a liquid distributor (120), and a pressure relief mechanism (130), and the liquid distributor (120) includes liquid outlet pipes (121) equal in number to the water pump device (110). And at least one liquid inlet pipe (122), the liquid inlet pipe (122) communicates with the liquid supply tank (200) of the spraying system, and the liquid outlet pipe (121) communicates between the liquid inlet pipe (122) and the water pump device (110) , used to guide the liquid in the liquid supply tank (200) to the water pump device; the liquid distributor (120) is provided with a pressure relief port (140), and the pressure relief mechanism (130) is operated to open or close the pressure relief The port (140), when the pressure relief port (140) is opened, the gas in the pump assembly (100) can be discharged through the pressure relief port (140). The pump assembly can avoid liquid medicine waste and reduce labor costs.

Description

Pump assembly, spray system, mobile device and spray method technical field The application relates to the technical field of pump assembly equipment, in particular to a pump assembly, spraying system, moving device and spraying Sprinkle method. Background technique [0002] With the continuous improvement of environmental protection requirements, people have higher and higher requirements for drip-proofing when the spraying system is stopped. Depend on Due to the effect of gravity, when the existing spraying system stops spraying, the spray head usually has liquid dripping out, that is, there is a leakage problem. The waste of liquid medicine also pollutes the environment. In order to solve the problem of dripping from the nozzle after the nozzle is stopped, it is usually Set a normally closed pressure switch, namely the pressure relief valve, when the outlet pressure of the spraying system is greater than the pressure threshold, the spraying system Carry out spra...

AI Technical Summary

Problems solved by technology

[0003] However, for pluggable water tanks, that is, water tanks that can be detached from mobile platforms such as drones, each time the water tank is plugged and unplugged, it is easy for air to enter the pipes of the sprinkler system.

When there is air in the pipeline of the sprinkler system, especially in the pump chamber, the outlet pressure of the sprinkler system is difficult to reach the above pressure threshold, so that the pressure relief valve cannot be pushed back to exhaust

At this time, it is necessary to manually open the pressure relief valve on each nozzle to discharge the gas in the spraying system, which not only takes time and effort, but also increases the labor cost; moreover, because it is difficult to judge when the exhaust is completed, it is usually necessary to wait for the liquid to be sprayed out Then close the pressure relief valve, the spray volume is uncontrollable, resulting in waste of liquid medicine

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