Scraper filter

The utility model provides a scraper filter. The scraper filter comprises an outer filter drum and a filter cartridge inside the outer filter drum, wherein a central shaft is installed on the filter cartridge and is in transmission connection with a hand wheel at the outer side of the outer filter drum, a feeding port is formed above the outer filter drum, a discharging port is formed in one side of the outer filter drum, mechanical seals are respectively arranged at the joint of the hand wheel and the outer filter drum as well as the discharging port, a scraper device is arranged below the filter cartridge and comprises a scraper, a tool post and a fixed frame, the fixed frame is fixed on the inner wall of the outer filter drum, the tool post is connected with the fixed frame through a kidney hole and a bolt, a drain outlet is formed in one part of the outer filter drum, the filter cartridge comprises a filter cartridge body and end closures at two ends of the filter cartridge body, grooves are uniformly for