Multistage powder filtering device for producing waterproof putty

The utility model discloses a powder multi-stage filtering device for waterproof putty production, and belongs to the field of waterproof putty production. The device comprises a device body, a groove is formed in the front face of the device body, a material collecting box is arranged in the groove, a partition plate is arranged in the device body, a pretreatment mechanism is arranged in the device body, a filter plate is arranged on the inner wall of the device body, the pretreatment mechanism is located over the filter plate, and a push plate is arranged on the filter plate. The push plate is slidably arranged on the driving mechanism, and cylinders are arranged on the bottom surfaces of two ends of the filter plate. The problems that in the prior art, filtering is not fine, and a filtering plate is prone to being blocked are solved, caked powder is scattered through the pretreatment mechanism, the scattered powder is filtered layer by layer through the filtering plate, then the powder on the filtering pla