Sub spray nozzle for variable spraying rotary spray head

Abstract

The invention relates to a sub spray nozzle for a variable spraying rotary spray head. The sub spray nozzle adopts the technical scheme that the spray pipe turning part of a main spray head is additionally provided with a sub spray nozzle, the degree of an included angle between the axial center line of the sub spray nozzle and the jet flow spraying direction of the main spray head is the degree of an included angle between the shortest spray range direction and the longest spray range direction of jet flows of the main spray head during edge-shaped spraying region spraying, a thin cover plate of the sub spray nozzle is arranged above an outlet of the sub spray nozzle, and the thin cover plate of the sub spray nozzle can be bent for an angle for regulating the included angle between the thin cover plate of the sub spray nozzle and the axial direction of the sub spray nozzle. A bottom outlet of the sub spray nozzle is provided with water distribution flow passages with different inclination angles, when the sub spray nozzle is adopted, the spraying water quantity of the main spray nozzle and the sub spray nozzle can be mutually supplemented when the spray head rotates to any position, and the uniform spraying of the spray head in the one-circle rotation range is realized. Therefore, the problem of phenomenon of nonuniform water quantity distribution in the one-circle rotation range because of the pressure change of the variable spraying spray head is solved.

Description

technical field [0001] The invention relates to an auxiliary nozzle of a variable spraying rotary spray head, which is suitable for a rotary spray head whose working pressure changes with time, and improves the uneven distribution of spraying water caused by pressure changes, especially a non-circular spray area. Secondary nozzles for variable sprinkler heads. Background technique [0002] The variable spraying rotary sprinkler is a water-saving sprinkler irrigation equipment. During the spraying process, due to the automatic adjustment of the pressure of the sprinkler, the pressure of the sprinkler will change at different rotation angles, the spraying range will change, and the non-circular spraying area will be realized. However, in the process of rotation, the change of pressure will affect the uneven distribution of water in the radial direction, and there will be less water at low pressure and more water at high pressure. Taking the realization of square spraying as a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to design an auxiliary nozzle for the variable-variable rotary sprinkler head, so as to solve the problem of uneven distribution of water volume within one revolution caused by the pressure change during the rotation process of the variable-variable rotary sprinkler head in the process of realizing the non-circular spray area

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