Exhaust device for sprayer switch

Abstract

The invention discloses an exhaust device for a sprayer switch, which comprises a water outlet pipe connected with a water outlet of a sprayer. The water outlet pipe is connected with a handle, the handle is connected with a spray gun through a spray gun switch, the spray gun switch comprises a connecting pipe communicated with the handle and a spray rod, one side of the connecting pipe is provided with a rotating spanner, the other end of the connecting pipe is provided with a joint, a transverse valve core is arranged in the connecting pipe, one end of the transverse valve core is contactedwith the rotating spanner, the other end of the transverse valve core is provided with a sealing ring A, one end of the sealing ring A is matched with a water outlet valve hole in the connecting pipe,and the other end of the sealing ring A is connected with a water outlet spring. The exhaust device for the sprayer switch is characterized in that the joint is connected with an exhaust valve body,the middle part of the exhaust valve body is provided with an exhaust nozzle, the inner wall of the exhaust valve body is provided with an exhaust valve hole which is matched with an exhaust valve core, one end of the exhaust valve core is connected with a sealing ring B, the sealing ring B is contacted with an exhaust spring, the exhaust spring is sealed in the exhaust valve body through a covercap, the other end of the exhaust valve core is fixedly connected with a push block, and the push block is contacted with the end face of the exhaust valve body.

Description

technical field [0001] The invention relates to a sprayer, in particular to an exhaust device on a sprayer switch, which belongs to agricultural plant protection machinery. Background technique [0002] Sprayer is a commonly used agricultural plant protection machinery. Due to the high labor intensity of manual sprayer, electric sprayer is widely used. The electric sprayer includes a liquid medicine tank, which is connected to the electric pump (the combination of the motor and the pump) through the water inlet pipe, the water outlet of the electric pump is connected to the water outlet pipe, and the water outlet pipe is connected to the handle. The handle is equipped with a spray gun switch, and the spray gun switch is connected to the spray rod. Install nozzles on the boom. However, after the liquid medicine in the liquid medicine tank is sprayed, the motor power is turned off, and the motor is still rotating due to inertia, and the air is sucked into the water outlet pip...

AI Technical Summary

Problems solved by technology

However, after the liquid medicine in the liquid medicine tank is sprayed, the motor power is turned off, and the motor is still rotating due to inertia, and the air is sucked into the water outlet pipe. If the air in the water pipe is not discharged, it will cause the following problems: first, it is not easy to inhale the liquid, which reduces the displacement and affects the spray effect; second, the air oscillates, which causes the boom to vibrate Unsteady grip

Therefore, the operator has to remove the nozzle and exhaust the air. The air is not completely discharged until the liquid medicine is sprayed from the spray rod. The operation of disassembling and assembling the nozzle is very troublesome and wastes liquid medicine.

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