Automatic backflush filtering net for micro irrigation

Abstract

The automatic backflush net filter has the basic structure including a filter casing with water inlet and water outlet, a filtering net set inside the casing, and a dirt draining pipe inside the filtering net. It features the filter casing separated into a filtering cavity a dirt draining cavity; and the dirt draining pipe penetrating the filtering cavity the dirt draining cavity and possessing one up and down moving water driven rotating body coaxial with the filtering net and homogeneously distributed dirt sucking tubes perpendicular to the filtering net. The dirt draining pipe has simultaneous radial rotation and axial shift to make the inside of the filtering net flushed successively without affecting the normal operation of the filter. The automatic backflush net filter has low manufacture and use cost and may be used widely in agriculture.

Description

technical field [0001] The invention relates to an automatic recoil net filter for micro-irrigation, which is a supporting part of micro-irrigation and sprinkler irrigation, belongs to the technical field of agricultural water-saving irrigation machinery filtration equipment, and is especially suitable for the irrigation process of farmland micro-irrigation filters. Medium backwashing treatment. Background technique [0002] With the popularization and application of water-saving irrigation technology, water quality filters have also been developed on a large scale. The existing farmland water quality filtration treatment equipment is connected in series. First, the irrigation water is initially filtered through a centrifugal sediment filter. Then enter the laminated or mesh filter. Most of the flushing problems of the mesh filter are to stop and remove the manual cleaning or to change the direction of the water flow to realize the backwash of the filter under the premise of...

AI Technical Summary

Problems solved by technology

[0002] With the popularization and application of water-saving irrigation technology, water quality filters have also been developed on a large scale. The existing farmland water quality filtration treatment equipment is connected in series. First, the irrigation water is initially filtered through a centrifugal sediment filter. Then enter the laminated or mesh filter. Most of the flushing problems of the mesh filter are to stop and remove the manual cleaning or to change the direction of the water flow to realize the backwash of the filter under the premise of stopping the irrigation. The problem exposed by the flushing method is that the connection of the filter equipment is complicated and the manufacturing cost is high. The application number "02125390.0 backwashing screen filter" proposes a filter that can realize the backwashing of the filter screen in irrigation. A rotary sewage discharge mechanism is set in the middle of the net to suck out the dirt in the net. The main problem of this technical solution is that it needs to add rotating power, which will greatly increase its manufacturing cost, otherwise the backwashing of the filter net and the normal irrigation of the filter cannot be carried out at the same time

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