Pressure adjusting system of self-feeding while-drilling stratum rock morphology recording device

The utility model discloses a pressure regulating system of a self-feeding while-drilling stratum rock morphology recording device. The device comprises an air bag, a liquid bag, an air pump, an air cylinder, a pressure sensor, a gas-liquid dynamic adjusting system placing chamber and a supporting plate, the air bag and the liquid bag are both located in the gas-liquid dynamic adjusting system containing chamber, the air bag is located above the liquid bag, the liquid bag is filled with colorless and transparent insulating liquid, the air pump is placed in the gas-liquid dynamic adjusting system containing chamber, and the air pump and the air bag, the air pump and the air cylinder, and the air pump and the pressure sensor are connected through pipelines. According to the utility model, the principle of gas-liquid closed circulation and real-time dynamic adjustment is adopted; drilling process, the pressure sensor senses the change of the internal pressure and the external pressure ofthe device in real time,