Oil tank cleaning device

The invention relates to the technical field of oil tank cleaning, and particularly discloses an oil tank cleaning device which comprises a water pipe connected with a supercharger, a fine adjustment pressure handle installed on the water pipe, a storage box communicated with the water pipe, a water outlet pipe communicated with the storage box and a spraying assembly installed at the end of the water outlet pipe. A switch valve is arranged at the joint of the storage box and the water outlet pipe, and the periphery of the storage box is rotationally connected with a dead angle mounting piece; the spraying assembly comprises a spraying disc installed at the end of the water outlet pipe, a plurality of spraying holes formed in the surface of the spraying disc and a connecting shaft rotationally connected to the spraying disc, one end of the connecting shaft penetrates into the spraying disc and is provided with a blocking disc capable of blocking the spraying holes, and blocking holes are formed in the blockin