Karman vortex street shaped runner and drip irrigation emitter comprising same

Abstract

The invention discloses a karman vortex street shaped runner and a drip irrigation emitter comprising the same, and belongs to the technical field of agricultural water-saving irrigation. The karman vortex street shaped runner consists of two or more karman vortex street shaped runner units, wherein each karman vortex street shaped runner unit comprises a first upper arc-shaped columnar channel, a first lower half-arc-shaped columnar channel, a second lower half-arc-shaped columnar channel and two columnar channels; when being fed into one karman vortex street shaped runner unit from the inlets of the karman vortex street shaped runner unit, liquid passes through a sudden expansion part, a sudden shrinkage part, a sudden expansion part and a sudden shrinkage part in sequence, and enters the next karman vortex street shaped runner unit from the outlet of the karman vortex street shaped runner unit. The drip irrigation emitter comprises a runner base body and the karman vortex street shaped runner formed in the surface of the rubber base body, wherein a water inlet groove and an irrigation emitter outlet are respectively formed in two ends of the karman vortex street shaped runner. The karman vortex street shaped runner and the drip irrigation emitter comprising the same are large in passage cross section, low in vortex energy consumption, intense in turbulent fluctuation and good in flow uniformity.

Description

technical field [0001] The invention belongs to the technical field of agricultural water-saving irrigation, and relates to drip irrigation and water-saving irrigation technical equipment, in particular to a Karman vortex-shaped flow channel and a drip irrigation dispenser. Background technique [0002] Water-saving irrigation plays an extremely important role in improving agricultural water use efficiency and solving the problem of water shortage in arid areas. Drip irrigation is the most effective water-saving irrigation method at present. It has the advantages of good water and fertilizer uniformity, high utilization rate, can improve the yield and quality of agricultural products, and is easy to manage. The emitter is the core and key part of the entire dripper system. The structure of the emitter has a great influence on the uniformity of irrigation, the anti-clogging ability of the system and the service life. Most of the existing domestic drip irrigation emitter flow...

AI Technical Summary

Problems solved by technology

Most of the existing domestic drip irrigation emitter flow channels are based on the maze form, and the shape and size are improved, and the energy dissipation is through the labyrinth tooth shape, which is relatively simple.

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