Variable-spray whole-torrential flow showerhead

Abstract

The invention pertains to a key device for water-saving irrigation, which is a wall-attached fluidic nozzle that realizes variable spraying; the nozzle comprises a static plate, a moving plate, a spraying body, a spraying tube, a rotating seal mechanism, a knighthead, a spacing ring, a reversing mechanism and a fluidic element body and is characterized in that the static plate and the moving plate are added to a nozzle spin; the moving plate is pressed to match a hollow shaft, and rotates along with the nozzle. The fluidic element body comprises a reverse air supply nozzle, a signal water receiving nozzle, an outlet cover plate, a signal water intake nozzle and a honeycomb duct; signal water in a signal water receiving nozzle leads one side of main jet-flow to form a low-pressure spiral area at intervals; by opening and closing an air supply receiving nozzle, the other side of the main jet-flow is led to switch between high pressure and low pressure so as to form a differential pressure between the right and the left ends of the main jet-flow, thus realizing the wall attachment of water flow and finishing direct spraying, stepping and reverse running of the nozzle. The static plate and the moving plate at the position of the nozzle spin move relatively to change the area of stopflow at an inlet and regulate the flow and the pressure of the inlet so as to change the spraying range of nozzle and realize variable spraying.

Description

technical field [0001] The invention belongs to key equipment in a water-saving irrigation sprinkler irrigation system, in particular to a variable-sprinkling full-jet nozzle. Background technique [0002] The 21st century will be an era of rapid social and economic development in my country, and an era of unprecedentedly sharp contradictions between supply and demand of water resources. Vigorously developing water-saving irrigation is the fundamental way to solve the shortage of agricultural water in our country. The sprinkler head is the key equipment that affects the quality of sprinkler irrigation. The traditional nozzles are mainly full-circle sprinkler rocker nozzles, which are widely used due to their stable performance and wide application range. However, when the sprinklers are used in a single or single-row configuration, the spraying perimeter and the spraying plot are often not matched, resulting in a large number of missed spraying, over-spraying and out-of-bo...

AI Technical Summary

Problems solved by technology

In these current patents, the spray head cannot complete the variable spraying function of any shape. For the full-jet spray head, when the range is required to be small, the flow rate of the water jet is too small to push the spray head to rotate.

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