Novel controllable nanobubble generation device

The invention relates to a bubble generation device. The generation device comprises a bubble generator itself and a circuit control system. An air outlet end of an air inlet pipe is connected with aventuri tube on a gradual contraction section, the upper end of the air inlet pipe is connected with a solenoid valve and an air pump, a pressure sensor is located in a throat outlet, a control circuit is connected with the solenoid valve and the pressure sensor, and the joint of a gradual expansion section and an outlet section is provided with multiple rings of porous disks which are equidistantly distributed and have cavitation holes of the same number in the radial direction. The pressure sensor transmits a pressure signal in the throat outlet to a control circuit, and the control circuitcontrols opening and closing of the solenoid valve according to the pressure of the throat outlet, thereby achieving the effect of controlling the air inlet amount of the air pump. The control circuitis used for detecting the