Cleaning device for drilling mud tank

The utility model provides a cleaning device of a drilling mud tank, and belongs to drilling mud tanks. The cleaning device of the drilling mud tank comprises a tank body, the tank body is provided with an inlet and an outlet, a stirring shaft is arranged at the center in the tank body, blades are arranged on the stirring shaft, a threaded rod is rotationally arranged in the tank body in the vertical direction, and the threaded rod is located at the position away from the center of the tank body and located between the inner wall of the tank body and the blades. A rotating power source used for driving the threaded rod to rotate is arranged outside the tank body, a cleaning part is arranged in the tank body, a threaded connecting part used for being in threaded fit with the threaded rod is arranged on the cleaning part, and a scraping and sweeping body used for cleaning the inner wall of the tank body is arranged at the edge of the cleaning part. The cleaning piece is driven by the threaded rod arranged in th