A defoaming device and a defoaming method for removing foam of
drilling fluid by means of linkage of negative pressure and
thermal radiation belong to the technical field of physical defoaming of
drilling fluid. The device comprises a cylinder tank body and is characterized in that a
thermal radiation part is arranged in the tank body, a
vacuum pump and a water pump are connected to the outer side of the tank body, and the whole set of device comprises a
pressure sensor, a temperature sensor, a
liquid level sensor, and the like. The core thought of the device provided by the invention is to adopt the mode of combining the negative pressure and
thermal radiation technologies. Firstly, the foam is guided into the closed tank body, a container is vacuumed by the
vacuum pump to make internal and
external pressure difference for the foam, in addition, the thermal
radiation part is used to heat to enable the gas in the foam in the tank body to expand, then the foam is rapidly removed under the actions of the
vacuum pump and the thermal
radiation part, and the foam base solution and solids carried by the foam are discharged from a liquid and
slag discharge port. According to the defoaming device, a large amount of foam discharged from foam drilling is quickly removed, the foam is prevented from being accumulated in a mine field, and the foam base solution is not affected and can be recycled.