Oil-water well stratigraphic reservoir water-injection decontamination filtering self-cleaning device

The invention relates to an oil-water well stratigraphic reservoir water-injection decontamination filtering self-cleaning device. With the device, an execution mechanism can be operated such that back-wash self-cleaning can be performed. The device comprises an upper flange valve cover with the execution mechanism, and a housing cylinder body with a flange on the upper part and a sealing head on the lower part. An inner cylinder body with a Trumpet-opening copper-powder-particle-sintered filtering sieve on the upper part is arranged inside the housing cylinder body. The housing cylinder body is respectively provided with a water inlet pipe with a valve, a water outlet pipe with a valve, and a sewage discharge pipe with a valve. During a normal operation process, the execution mechanism valve rod seal is elevated; inlet water flows through the inner cylinder body with the copper powder particle sintered filtering sieve, and impurities are retained on the tapered surface of the trumpet opening, such that purpo