Spraying body used for being connected with two-way water passing valve and nozzle body of spraying body

Abstract

The invention discloses a spraying body used for being connected with a two-way water passing valve and a nozzle body of the spraying body. The spraying body comprises a water inlet, a water outlet and a backflow opening; the water inlet and the water outlet communicate with each other through the backflow opening; the backflow opening comprises an inner cavity and an outer cavity annularly arranged on the outer side of the inner cavity, the inner cavity communicates with the water outlet, and the outer cavity communicates with the water inlet; the inner cavity is used for communicating with a central through hole of the two-way water passing valve, and the outer cavity is used for communicating with a plurality of peripheral through holes of the two-way water passing valve. The inner cavity and the outer cavity of the backflow opening communicate with the two-way water passing valve, the water inlet and the water outlet, so that connection of the spraying body and the two-way water passing valve can be achieved, and then the two-way water passing valve can be applied in the field of spraying heads of plant protection machines for pesticide spraying on-off control; the water inlet is led to the multiple peripheral through holes and then enters a backflow cavity of the two-way water passing valve, the pressure reduction effect can be achieved, and then the blocking and sealing effect on the central through hole can be improved.

Description

technical field [0001] The invention relates to the field of precision pesticide application in agriculture, in particular to a spray body for connecting a two-way water valve and a nozzle body thereof. Background technique [0002] my country is a big country in the production and use of pesticides, and the production technology of pesticides is at the international advanced level. However, the technology of plant protection machines and pesticide use is relatively backward. In the past five years, the amount of pesticides used in my country has been around 310,000 tons, while the utilization rate of pesticides is only About 35%, "controlling the amount and improving efficiency" has become a necessary measure to control the growth of pesticides. However, there are still problems such as low effective utilization of pesticides, excessive residues, and environmental pollution. With the continuous development of precision agriculture and smart agriculture, agricultural machiner...

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Problems solved by technology

[0003] The Chinese patent application publication number CN 110973096A discloses a pesticide sprayer for plant protection drones, including a connecting pipe, the outer wall of the connecting pipe is provided with threads, the lower end of the connecting pipe is equipped with a spraying frame, and the lower end of the spraying frame is provided with a spraying frame. The side wall of the spraying frame is evenly provided with a communication hole along its circumferential direction, and a communication mechanism is arranged in the communication hole, and a direction adjustment mechanism is uniformly provided on the outer wall of the spraying frame along its circumferential direction; Spraying pesticides at a spraying angle can reduce the impact of weather and wind, and ensure the effect of spraying pesticides evenly in different working environments. However, this plan does not control whether the nozzle sprays drugs on or off, and there is no relevant record

[0004] The Chinese patent application publication number CN 109550608 A discloses an adjustable plant protection UAV pesticide spraying nozzle, including an outer tube, the inner tube is sleeved inside the outer tube, and the bottom of the outer tube is connected to the inner tube through a ring-shaped fixing plate. The bottom of the tube is fixedly connected, the gap between the outer tube and the inner tube is the liquid medicine chamber, the middle part of the top of the outer tube is fixedly connected with the liquid inlet pipe, and the bottom end of the liquid inlet pipe is connected with the liquid medicine chamber, and the middle part of the top of the inner pipe is fixed A flow regulating valve is connected, and the top of the flow regulating valve communicates with the bottom of the inlet pipe. That is to say, this scheme controls the flow of the nozzle by setting a flow regulating valve. Although the flow can be adjusted, it cannot effectively realize the The on-off of the spraying of the nozzle, and the frequent adjustment of the flow regulating valve will cause its reliability to decrease

[0005] The Chinese patent with the application publication number of CN 107654659 A discloses a simple valve core. The bottom end of the valve body is clamped to the cover body. The inner side of the cover body is sealed with a fixed ceramic sheet. The middle part of the cover body and the fixed ceramic sheet is oppositely provided with a connected water outlet. , one side of the water outlet is provided with a relative water inlet, the outer edge of the upper end of the fixed ceramic sheet is sealed and snapped to the lower end of the sealing seat, the upper end of the sealing seat is snapped to the inner side of the valve body, the inner sealing seat is sealed to the valve stem, and the upper end of the valve stem Extending out of the valve body, the lower end of the valve stem is sealed and connected to the top of the water outlet in the middle of the fixed ceramic sheet, and the upper end of the valve stem is lifted to make the lower end of the valve stem out of the water outlet. Control the opening and closing of the water outlet, but this type of spool is generally used in the field of return valves (hot and cold water valves), connecting the water inlets to cold water and hot water respectively, and flowing out from the water outlet after mixing. There is no record of applying this type of valve in the field of sprinkler heads for pesticide spraying of plant protection machines, and there is no corresponding structure in the prior art that can be used for reference

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