Twice wall-attached jet control element adopting main spray nozzle and assistant spray nozzle

Abstract

The invention aims to solve the key technical problem that when a water flow is straightly jetted, a signal water receiving nozzle cannot discontinuously obtain signal water, so a differential pressure cannot be formed by the left side and the right side of a jet element, a wall-attached jet for impacting a cover plate is difficult to form, and thereby a spray head cannot contrarotate and move step by step. A twice wall-attached jet control element adopting a main spray nozzle and an assistant spray nozzle comprises a main spray nozzle cover plate, a jet element body, a main spray nozzle reinflating hole, a main spray nozzle connecting pipe, an air tee joint, an assistant nozzle connecting pipe, an elbow pipe connecting piece, the assistant spray nozzle, a main spray nozzle signal receiving nozzle and an assistant spray nozzle diversion pipe. The twice wall-attached jet control element has the advantages that the structure is simple, the stability and the reliability are realized, the defect of the present jet spray head that as the flow rate of a water flow jetted from a center hole is too high, the signal water receiving nozzle is not steady enough, and thereby the rotation is not steady enough and the like are overcome, and the defect of water volume distribution of the existing spray head that the water volume is high at places far away from the spray head and the water volume is small at places close to the spray head is overcome.

Description

technical field [0001] The invention belongs to the key equipment in the jet nozzle of the water-saving irrigation sprinkler irrigation system, in particular to a main and auxiliary nozzle twice-attached wall jet control element. Background technique [0002] Sprinkler irrigation technology is one of the key technologies in water-saving irrigation. The jet nozzle is a water-saving sprinkler head created by China with independent intellectual property rights. The working principle of the full jet nozzle is the wall effect of the water flow. Flow in a jet element, where a stream of water is directed from a narrow nozzle into the atmosphere. At this time, the molecules of the edge jet collide with the surrounding static air, so that the original static gas flows together. This is the entrainment effect in the process of jet flow. The difference in gas pressure deflects the direction of the main jet. [0003] After retrieval, the relevant declared patents are: double-click sy...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that when the water flow is directly sprayed, the signal nozzle cannot intermittently get the signal water, so that the left and right sides of the jet element cannot form a pressure difference, and it is difficult to form a wall-attached jet to impact the cover plate, causing the nozzle to be unable to step and reverse. The key technical problem of the rotary motion is to provide a simple structure, reliable operation, and stable work of the primary and secondary nozzles with two wall-attached jet control elements.

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