Desilting machine for underground sewage and sludge

The invention provides a desilting machine for underground sewage and sludge, relates to the technical field of sludge cleaning, and aims to solve the problems that the suction range is limited after a suction pipe is put into a well, if the sludge fluidity is not high, the sludge at the edge of the well wall cannot be cleaned, and in the sludge cleaning process, the whole suction pipe is put into the well, so that the sludge cannot be cleaned. The device solves the problem that sludge cannot be continuously cleaned due to the fact that the device is prone to being clamped between well walls after the sludge is cleaned. The desilting cylinder is of a vertically-through cylindrical structure, the desilting cylinder is vertically arranged in the vertical shaft in a sliding mode, and the lower end of the desilting cylinder is connected with a supporting ring frame through six vertically-downward supporting rods. According to the underground sewage and sludge cleaning device, the more efficient underground sewage