Cleaning device for interior of oil filling tank

The utility model belongs to the technical field of oil filling tank cleaning, and discloses an oil filling tank interior cleaning device which comprises a tank body, a cleaning mechanism is arranged in the tank body and comprises a lead screw, a limiting rod, a movable disc, a rotary disc and a brush, the lead screw is rotationally installed on the inner wall of the tank body, and the limiting rod is fixedly installed on the inner wall of the tank body. The movable disc sleeves the surfaces of the lead screw and the limiting rod, the movable disc is in threaded connection with the threaded rod, the rotary disc sleeves the surface of the movable disc and is rotationally connected with the movable disc, the brush is fixedly mounted on the surface of the rotary disc, and two flushing mechanisms are symmetrically arranged in the tank body. A cleaning mechanism is arranged, a worker starts a servo motor and a waterproof motor, through cooperation of a limiting rod, the inner wall of the tank body is cleaned, the