The invention relates to a defoaming method and a deforming device for removing the foam of
drilling fluid through
thermal radiation, which belong to the technical field of the physical defoaming of the
drilling fluid. The defoaming device comprises a cylindrical container. The defoaming device is characterized in that a gas outlet is arranged on the top of the cylindrical container, a fluid and
slag outlet is arranged on the bottom of the cylindrical container, a foam inlet is arranged on the side face of the middle lower part of the cylindrical container, a
thermal radiation element is arranged on the upper inner wall of the cylindrical container, a temperature sensor is arranged below the
thermal radiation element on the cylindrical container, an ultrasonic foam height sensor is also arranged below the thermal
radiation element on the cylindrical container, and
fluid level sensors are arranged on the middle and lower parts of the inside cylindrical container. The foam flows into the device through the foam inlet, the thermal
radiation element on the device gives off thermal
radiation to break the foam with low intensity near the device, the separated gas is discharged through the gas outlet, and the foam base fluid and the
solid carried by the foam are discharged through the fluid and
slag outlet. The defoaming device can quickly remove a great amount of foam discharged from foam drilling and prevent the foam from being accumulated in a mine. In addition, the nature of the foam base fluid is not affected, thereby facilitating the cyclic utilization of the foam base fluid.