Environment-friendly sewage filter

Abstract

The invention relates to the field of sewage filtering and particularly relates to an environment-friendly sewage filter which comprises a filtering device, a water pump, a sewage tank, a sewage storage tank, three three-way electromagnetic valves, a bidirectional electromagnetic valve, three differential pressure sensing probes and a control device, wherein the filtering device comprises a tank body; a filter net is arranged in the tank body; a cleaning disk is arranged in the filter net; an upper water inlet and a lower water inlet are formed at the upper end and lower end of the tank body respectively; a water outlet is formed at the middle of the tank body; the three differential pressure sensing probes are arranged at the upper water inlet, the lower water inlet and the water outlet respectively; the three three-way electromagnetic valves are connected between the water pump and the filtering device; one end of the bidirectional electromagnetic valve is connected with the three-way electromagnetic valve, and the other end is connected with the sewage storage tank; and the sewage storage tank is connected with the sewage tank. The environment-friendly sewage filter provided by the invention can realize automatic filtering and cleaning of sewage through water pressure and has the advantages of simple structure, low production cost, energy conservation and environmental protection.

Description

technical field [0001] The invention relates to the field of sewage filtration, in particular to an environment-friendly sewage filter. Background technique [0002] Self-cleaning filters are widely used in iron and steel, power stations, water conservancy, chemical, environmental protection, pharmaceutical and other industries due to their advantages of continuous filtration, large flow rate, and self-cleaning and regeneration of filter elements. [0003] Existing self-cleaning filters require additional power to make the self-cleaning components move to absorb and discharge sewage on the surface of the filter element, and the consumption of sewage is large, and the operating cost is high. In particular, additional power is required, which increases maintenance costs. It also complicates the device structure. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide an environment-friendly sewage filter, which can automa...

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Problems solved by technology

[0003] Existing self-cleaning filters require additional power to make the self-cleaning components move to absorb and discharge sewage on the surface of the filter element, and the consumption of sewage is large, and the operating cost is high. In particular, additional power is required, which increases maintenance costs. It also complicates the structure of the equipment

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