Oscillation pulsed drip irrigation emitter and drip irrigation device

Abstract

The invention belongs to the technical field of agricultural water-saving irrigation, and relates to a drip irrigation emitter, in particular to an oscillation pulsed drip irrigation emitter and a drip irrigation device. The emitter is composed of a water inlet trough, an oscillation pulsed generator, two runners and a water outlet trough, wherein the water inlet trough is provided with a filter window, and is communicated with the oscillation pulsed generator which is communicated with the runner; and the water outlet trough is positioned at the end of the runner. A fluidic feedback oscillation technique is applied to drive the water flow to flow in the two runners intermittently, thus continuous pulse process is realized; strong turbulent fluctuation and impact water flow is formed in the runner; the anti-blocking capacity and the irrigation uniformity of the emitter are enhanced; and elastic body structures, such as rubber, plastic films and springs and the like of the drip irrigation emitter are omitted. The drip irrigation emitter provided by the invention has the characteristics of being simple in structure and strong in reliability and durability, and can be widely applied to the demands of irrigation in field crops, vegetables, fruit industry and the like.

Description

technical field [0001] The invention belongs to the technical field of agricultural water-saving irrigation, and relates to a drip irrigation dispenser, in particular to an oscillating pulse drip irrigation dispenser and a drip irrigation method. Background technique [0002] Pulse drip irrigation has the characteristics of strong anti-clogging performance and high irrigation uniformity, and has been widely concerned and applied by countries all over the world; the pulse drip irrigation system generates continuous pulse water flow through the cycle of pulse generator water storage and pulse, and its working process is generally by water filling. Pressurization and water outlet decompression are composed of two independent stages, and the two stages are automatically reciprocated, so that the water flows intermittently from the drip irrigation emitter at a certain pulse frequency, realizing the pulse drip irrigation method. [0003] The pulse generator is the core device that...

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Problems solved by technology

[0004] Existing pulse drip irrigation utilizes the expansion and reset of elastic materials such as rubber, plastic, and springs to achieve the purpose of pulse water flow; drip irrigation systems generally run for a long time, and elastic materials are prone to fatigue during long-term, high-frequency frequent reciprocating operations , or even damage; the pulse frequency depends on the stiffness and initial compression of the elastic material. Long-term operation will lead to changes in the stiffness and elastic modulus of the elastic material, and the elasticity will decrease. Sensitivity and reliability will decrease to varying degrees, thus affecting pulse drip irrigation. Long-term operation and use of the system; the use of elastic materials will inevitably increase the structural complexity of the pulse generator, and put forward higher requirements for mechanical sealing, manufacturing precision, reliability and durability

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