Blowing tank pressure stabilizing device

The utility model discloses a pressure stabilizing device for an injection tank. The pressure stabilizing device comprises the injection tank, a fluidization pipeline, a conveying pipeline, a chargingpipeline and a pressurizing pipeline, wherein a fluidization device is arranged at the bottom of an inner cavity of the injection tank; one end of the pressure relief pipeline is connected to the topof the injection tank, and the other end of the pressure relief pipeline is connected to a secondary air supply device II of the conveying pipeline; one end of the pressurizing pipeline is connectedto the top of the blowing tank, and the other end is connected to a secondary air supply device I of the conveying pipeline; a pressure relief regulating valve is arranged on the pressure relief pipeline, a pressurization regulating valve and an air supply regulating valve are arranged on the pressurization pipeline, and the pressure relief regulating valve, the pressurization regulating valve andthe air supply regulating v