Siphon type deslagging grating

The utility model relates to the technical field of sewage treatment, in particular to a siphoning type deslagging grating which comprises a sewage pool, a water passing tank is fixedly connected to the left portion of the upper end of the sewage pool, a water passing groove is formed in the water passing tank, and mounting mechanisms are fixedly connected to the upper middle portion of the front end and the upper middle portion of the rear end of the water passing tank. The upper end of the water passing tank is detachably connected with a water passing grating, the lower wall in the water passing tank is provided with a water inlet grating, the right end of the water passing tank is fixedly connected with a water inlet pipe, the left end of the water passing tank is fixedly connected with a connecting tank, the left end of the connecting tank is fixedly connected with a slag collecting tank, and the upper left portion of the outer surface of the slag collecting tank is provided with a flushing pipe. A water