Automatic back-washing combined filter

Abstract

The invention relates to an automatic back-washing combined filter which is characterized by comprising a sediment filter tank body; a sediment inlet, a back-washing water outlet and an air inlet / exhaust valve are arranged at the top of the sediment filter tank body; a water-sediment swirler is arranged in the sediment filter tank body; an outlet opening at the bottom of the sediment filter tank body passes out of the baseplate of the sediment filter tank body and is connected with a sand tank; one end of an overflow pipe connected with the water-sediment swirler extends into a water-sediment swirler tank body, and the other end of the overflow pipe is connected with the junction between the outflow pipe and a back-washing drainage pipe; an electromagnetic three-way valve is arranged at the junction; two ends of the outflow pipe are arranged in the sediment filter tank body; a water inlet tube passing out of the sediment filter tank body is connected on the water-sediment swirler tank body; drain pipes passing out of the bottom plate of the sediment filter tank body are connected with the bottoms of two mesh gauze filters arranged in the sediment filter tank body; two ends of the back-washing drainage pipes pass out of the sediment filter tank body and are correspondingly connected on the drain pipes; an impeller is arranged in the sediment filter tank body; and the motor fixed on the sediment filter tank body provides power for the impeller.

Description

technical field [0001] The invention relates to a filter, in particular to an automatic backwash combined filter for drip irrigation in diversion of the Yellow River. Background technique [0002] The Yellow River Basin is mostly an arid and semi-arid area, and the shortage of water resources has been seriously restricting the development of industry and agriculture. Especially in recent years, the water supply of the Yellow River has been decreasing year by year. The upper and middle reaches of the Yellow River have less water, and the lower reaches have been drought and less rain year after year. The demand for water has been increasing, and the contradiction between supply and demand of water resources has become more prominent. The Yellow River has little water and a lot of sand. In the past, irrigation from the Yellow River was mostly flood irrigation. Not only did channel erosion and siltation occur, but more seriously, a large amount of precious water resources were ...

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the object of the present invention is to provide an automatic backwash combined filter for drip irrigation in Yellow River Diversion, which has strong self-adaptive control ability and can effectively solve the problems of filter clogging and insufficient water quality filtration.

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