Hydraulic cyclone sewage intercepting device

The invention relates to the technical field of sewage treatment, in particular to a hydraulic cyclone sewage intercepting device which comprises a vertically-arranged cylindrical well body, a middle shaft connected in the well body and a sand guide plate, wherein the sand guide plate is located below the middle shaft, the bottom end of the middle shaft is communicated with a mud pumping pipe, the mud pumping pipe and the middle shaft are coaxially arranged; the bottom end of the mud pumping pipe is arranged close to the bottom of the well body, the bottom of an inner cavity of the well body is in a hopper shape, the outer side wall of the mud pumping pipe is rotationally connected with mud scraping blades, the mud scraping blades are arranged in a spiral shape and abut against the side wall of the bottom of the inner cavity of the well body, and a driving structure used for driving the mud scraping blades to rotate is further arranged in the well body. The device has the advantage that workers can conveniently clean sediments at the bottom of the well bottom.