Anti-blocking device for sewage discharge

The utility model discloses an anti-blocking device for sewage discharge, which relates to the field of sewage treatment and comprises a sewage discharge pipe, one end of the sewage discharge pipe is provided with a connecting pipe head, the inner side of the connecting pipe head is sleeved with an anti-blocking mechanism, the outer side wall of the anti-blocking mechanism is provided with a fixing groove, and the inner side of the fixing groove is provided with a fixing column. According to the anti-blocking mechanism, the movable frame installed on the inner side of the connecting pipe head rotates, so that the connecting column welded to the inner side wall of the movable frame is driven to rotate, the scraping plate welded to the outer side wall of the connecting column rotates, and therefore the inner side wall of the sewage drainage pipe is scraped and cleaned; and meanwhile, a filter plate is installed at one end of a connecting column, and when a movable frame is pulled out, the impurities and impurit