Water-driven filtering and reverse cleaning device for micro irrigation and filtering and reverse cleaning method

Abstract

The invention provides a water-driven filtering and reverse cleaning device for micro irrigation. The filtering and reverse cleaning device comprises two tank bodies, a water intake pipe, as well as a reverse cleaning pipe, a sewage discharge pipe and a water drainage pipe which are connected with the two tank bodies, wherein the two tanks are respectively communicated with the water intake pipe and the sewage discharge pipe by a diaphragm type water-driven two-position three-way valve respectively; each of the tank bodies is internally separated into an upper cavity body and a lower cavity body by a supporting plate; each supporting plate is provided with a laminated type water filtering cap; the cavity body above is a water distribution chamber which is internally provided with a filtering medium. The invention also provides the filtering and reverse cleaning device, and the two tank bodies operate in parallel to filter water in filtration; in reverse cleaning, the two tank bodies alternatively operate under the combined effect of different valves and the diaphragm type water-driven two-position three-way valve by a water driving mode so as to clean the tank bodies. According to the invention, water with high sand content is treated by a mode of combining filtering and sand discharge so as to solve the problem of blockage during micro irrigation, the filtering effect is good, the head loss is small, the installation and use are convenient, the work is safe and reliable, and the price is low.

Description

technical field [0001] The invention relates to a water-driven filtering and backwashing device and a filtering and backwashing method for micro-irrigation, belonging to the technical field of water-saving irrigation. Background technique [0002] Micro-irrigation is a modern water-saving irrigation technology, which has many advantages such as water saving, energy saving, and production increase. However, micro-irrigation is characterized by the use of irrigators such as drippers, micro-sprinklers, and drip irrigation belts with small orifices. They are easily blocked by various dirt in the irrigation water, resulting in uneven irrigation of the micro-irrigation system, resulting in Crops are not adequately and timely watered and yields are reduced. The practice of micro-irrigation projects shows that even if a screen filter is installed in the micro-irrigation system, solid sand and other dirt in the water can be removed, but the algae, microorganisms, bacterial clusters,...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the deficiencies of the prior art, the present invention provides a micro-irrigation water-driven filtration and backwashing device and a method for filtering and backwashing, using water to drive the backwashing and filtering device, and combining filtration and sand discharge to treat high-concentration Sand water to solve the problem of micro-irrigation blockage, good filtering effect, large filtering capacity, small head loss, easy installation and use, safe and reliable work, and cheap price

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