Degassing device for earthquake monitoring

The utility model relates to a degassing device for earthquake monitoring. The device comprises a water tank, a vacuum pump, a gas-collecting bag and a main control circuit, the water tank is providedwith a water inlet, a water outlet, a water level overflow port and an air outlet; the gas collecting bag is provided with a gas inlet and a gas outlet; a first electromagnetic valve is arranged at the water tank water inlet; a second electromagnetic valve is arranged at the water outlet; the water level overflow port is provided with a sixth electromagnetic valve; the air outlet is connected with a vacuum pump through a third electromagnetic valve; the vacuum pump is connected with a gas inlet of the gas collection bag through a fourth electromagnetic valve, a gas outlet of the gas collection bag is connected with a gas analysis instrument through a fifth electromagnetic valve, a gas pressure sensor and a water level sensor are arranged in the water tank, a gas pressure sensor is arranged in the gas collection b