Multifunctional machine apparatus for storage tank cleaning

The utility model provides a multifunctional machine apparatus for storage tank cleaning, comprising an oil tank to be cleaned, a water case and elevator pumps, and characterized in that the oil tank to be cleaned and the water case are respectively through valves in communication with a vacuum suction tank, the outlet of which respectively taps a first elevator pump and a second elevator pump through valves; a circulating liquid inlet taps the first elevator pump and the second elevator pump through tapping valves; the outlets of the first elevator pump and the second elevator pump tap valves and are in communication and two ways are divided: one is in communication with a suction inlet and the other is in communication with a high pressure cleaning machine set; two ways are divided after the second time valve tapping and communication: one goes through valves and is in communication with a heat exchanger which taps valves and is respectively communicated with an oil-water separating device and the high pres