Pulse micro-sprinkler irrigation system

Abstract

The invention relates to a pulse micro-sprinkler irrigation system. After passing pulse valves before all capillary pipes, pressurized water enters all the capillary pipes in a mode that pulse flow speeds up under rising pressure and slows down under lowering pressure, and the pressurized water is sprinkled out to irrigate crops through micro sprinkler heads arranged on all capillary pipes in a pulse mode. Quickly rising pressure can produce strong impact on blocking objects, and slowly lowering pressure cannot lead water in the capillary pipes behind the pulse valves to return, form negative pressure on water outlet holes of sprinklers and block the negative pressure sucking type water outlet holes. The pulse frequency can be adjusted in a large range, the pulse frequency can be slowed down under the same irrigation strength, and the sprinklers with large diameter water outlet holes are adopted to form the pulse micro-sprinkler irrigation system which does not require filters. The use of the pulse irrigation mode for micro-sprinkler irrigation overcomes the defects of concentrated annular water output of other micro-sprinkler irrigation equipment. The pulse micro-sprinkler irrigation system has the characteristics of blockage resistance, uniform sprinkling and low cost.

Description

Technical field: [0001] The invention relates to the field of farmland irrigation, in particular to a pulse micro-sprinkler irrigation system with anti-clogging and good irrigation uniformity. Background technique: [0002] The pulse micro-irrigation system is a brand-new water-saving irrigation equipment successfully researched and developed by the American Intertec company in the 1980s. Its outstanding advantage is its excellent anti-clogging performance, which effectively solves the problem that the micro-irrigation system is easy to block. , eliminating the need for expensive fine filtration systems. The pulse type micro-irrigation system includes: water supply trunk, branch pipe, pulser assembly installed at the head of each symmetrical branch pipe, irrigation elastic capillary and sprinkler assembly. Among them, the pulser assembly is composed of frequency controller, pulse valve, pressure regulating valve and quick interface, and is the control center of the system. ...

AI Technical Summary

Problems solved by technology

The main defects are: 1. The structure is complex, and the water irrigation elastic capillary needs to be made of special elastic materials, and the input cost is too high, which is not suitable for the national conditions; 2. The water spraying of the latter sprinkler is carried out sequentially after the water spraying of the previous sprinkler is released. If any sprinkler fails, the system will stop running; 3. The pulse micro-irrigation system starts the sprinkler water spraying process through the pulser assembly to release water and lose pressure. When spraying water, part of the water that has been pressurized in the pipe from the first sprinkler to the pulser assembly of each irrigation elastic capillary is directly released, resulting in both energy loss and water loss

This product has the following defects: 1. The pulse frequency cannot be adjusted, so the irrigation intensity cannot be adjusted according to the needs; 2. The pulse frequency is too high. Under the same irrigation intensity, the aperture of the outlet hole is too small, only Φ0.6mm, The clogging sensitive size with a pore size less than 0.7mm is not avoided, so a filter device is required for filtration

3. It can cause the negative pressure suction type water outlet to be blocked. For the pulse drip irrigation system with the above structure, the capsule pulse generator stops the water supply quickly, which will cause the water in the quantitative drip irrigation pipe emitter pipeline behind the capsule pulse generator to "rebound". , negative pressure is formed at the water outlet hole of the quantitative drip irrigation pipe emitter, which is easy to cause blockage of the negative pressure suction water outlet hole, especially the water outlet hole at the tail end of the quantitative drip irrigation pipe emitter

However, due to the high investment of foreign products, the domestic market is difficult to accept

However, domestic products cannot be used for pulse micro-sprinkler irrigation due to performance reasons.

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