High-pressure cavitation multiphase fluid density regulation and control mixer and use method

The invention relates to the technical field of petroleum engineering, in particular to a high-pressure cavitation multiphase fluid density regulation and control mixer and a use method. According to the technical scheme, the two sides of a nitrogen high-pressure injection valve are connected to a first mixing main valve body and a second mixing main valve body respectively; a first foam fracturing fluid inlet flange is mounted at one end of the first mixing main valve body, and a first regulating and mixing spray head is mounted in an inner cavity of the first mixing main valve body; a first foam fracturing fluid inlet flange is mounted at one end of the first mixing main valve body, a second foam fracturing fluid inlet flange is mounted at one end of the second mixing main valve body, and a second regulating and mixing spray head is mounted in an inner cavity of the second mixing main valve body. Under the action of the first mixing main valve body and the second mixing main valve body, the foam fracturing