Reverse osmosis filtering device for purification treatment

The utility model discloses a reverse osmosis filtering device for purification treatment, which comprises a filter cartridge, sealing plates are fixedly sealed at the top and the bottom of the inner wall of the filter cartridge, a central pipe is fixed between the two sealing plates, the bottom of the central pipe is communicated with a water outlet pipe, and the outer wall of the central pipe is wrapped with a filtering layer. A filter box is fixed to the top of the filter cartridge, the bottom of the filter box communicates with a plurality of guide pipes penetrating through the sealing plate located at the top, a plurality of water outlet holes distributed at equal intervals are formed in the outer walls of the guide pipes, a water inlet is formed in the top of the filter box, and a cleaning assembly is rotationally arranged on the inner wall of the bottom of the filter box; the cleaning assembly comprises a rotating block rotationally connected to the inner wall of the bottom of the filter box and a scra