Abstract: An apparatus for cleaning tanks which is inserted into an opening at the top of the tank to be cleaned. The apparatus has an elongated cylindrical housing with an upper fluid inlet portion and a lower portion having a cylindrical rotary member coupled for rotation to the housing. The apparatus includes an air motor in the upper portion. In the lower portion, the main component is a high pressure block with an elongated axial aperture and a plurality of feed tubes disposed parallel to the axial aperture are held by the block. There is a central rotating vertical main tube in the central aperture which carries high pressure liquid. At the end of the high pressure block is a bevel housing gear and a nozzle tube is coupled at right angles to the central vertical tube. This nozzle tube has vertically disposed spray nozzles at one end and a bevel gear at the other end which is engaged with the bevel housing gear.

Abstract: An apparatus for cleaning tanks comprising in combination a rectangular box like frame having front, rear and longitudinal sides defined therein; a plurality of inlet ports at the rear coded for a particular liquid, a plurality of outlet ports similarly coded and similarly aligned at the rear, valves at each of the inlet and outlet ports; a first trunk line connected and fed by all of the valves, a pump fed by said first trunk line; an output line fed by the pump, a sonic or ultrasonic spray nozzle assembly at the end of the output line that is insertable into a tank to be cleaned, a return port in the frame for receiving materials from the cleaned tank, a return pump connected to the return port and a return trunk line fed by the return pump; and, a plurality of return lines connected to the outlet ports with a valve for each line, the valves all connecting to the return trunk line, the return lines feeding waste liquids from the return trunk lines to the outlet ports.