Filter for cleaning chemical waste residues

The filter comprises a main body, a water inlet pipe and a blow-off pipe are fixedly connected to the side face of the bottom end of the main body, and a water outlet pipe is connected to the top end of the main body; a filter cartridge with filter holes and a barrel-shaped filter element are sequentially arranged in the main body in a sleeving manner; a scraper is arranged on the outer surface of the filter cartridge, an arc-shaped baffle is arranged on the inner surface of the filter cartridge, the scraper abuts against the inner wall of the main body, and the arc-shaped baffle abuts against the outer surface of the filter element; the bottom end of the water outlet pipe is inserted into the filter element, the outer side of the water outlet pipe is sleeved with a sealing cover, and the water outlet pipe is in threaded connection with the main body through the sealing cover. The problem that the interior of the filter is difficult to clean is solved by adopting the design of the scraper; a double-layer filt