Profile control and liquid preparation device with cleaning function for nitrogen foam flooding

A nitrogen foam flooding profile control liquid preparation device with a cleaning function comprises a tank body, a liquid inlet pipe is fixedly installed in the middle of one side of the tank body, an air inlet pipe is fixedly installed on the lower portion of one side of the tank body, a liquid outlet pipe is fixedly installed at the bottom of the other side of the tank body, a first through hole is formed in the center of the top face of the tank body, and a rotating shaft is rotationally installed in the first through hole through a sealing bearing. The lower end of the rotating shaft is fixedly connected with the upper end of a square rod, a disc is arranged on the upper portion in the tank body, a square hole is formed in the center of the top face of the disc, and the square rod penetrates through the square hole. Through mutual cooperation of the motor, the rotating shaft, the square rod, the disc, the reciprocating lead screw and other structures, the reciprocating lead screw rotates around the squa