Filter disc cleaning device and cleaning method

The invention discloses a filter disc cleaning device and a cleaning method, and relates to the technical field of solid-liquid filtration and separation. The filter disc cleaning device is used for solving the problem of poor cleaning effect caused by the fact that existing filter disc cleaning is not thorough enough, and meanwhile, the filter disc cleaning device is used for solving the problem that cleaning device is complex in structure due to the fact that the number of parts is large. The filter disc cleaning device comprises a rotating shaft, a flushing fluid header pipe, flushing fluid branch pipes and an angle rotation driver, wherein the rotating shaft is arranged in a shell, penetrates through the centers of a plurality of filter discs and drives the filter discs to rotate horizontally; one end of the flushing fluid header pipe is connected with a flushing fluid inlet, and the other end of the flushing fluid header pipe extends into the shell and is connected with the plurality of flushing fluid br