Single-filter-screen special-shaped filter valve with double filter effects

The utility model belongs to the technical field of filter valves, and particularly provides a single-filter-screen special-shaped filter valve with double filter effects. The filter valve mainly comprises a valve body, a sleeve assembly, a filter screen and a cover plate. Wherein the valve body comprises a main valve body, a first filter cavity, a second filter cavity, an output port, an input port, a limiting flange and an assembly port; the sleeve assembly comprises a first sleeve, a second sleeve, an input port, an annular clamping edge, a sealing ring, an upper caulking groove and a lower caulking groove. The filter screen cleaning assembly comprises a shaft, a scraping plate and an impeller; according to the filter valve, the reasonable internal design is conducted on the valve body, liquid is filtered twice through one filter screen, and compared with a common filter valve with one-time filtering, double filtering is achieved on the premise that the number of the filter screens is not increased, and th