Non-boosting closed large capacity liquor storage and supplement equipment

The utility model relates to a sealed large capacity fluid storing/feeding device without pressure increase, which comprises an electromagnetic valve, a manual needle valve, a supporting frame seat and a lower cover, wherein a panel of which the center is provided with a circular hole is arranged on the supporting frame seat, and an air discharging cavity is fixed on the panel; the center of the lower cover is provided with a central hole, and the lower cover is fixed on the lower surface of the panel; an electromagnetic valve is fixed on one side panel of the air discharging cavity and is connected with the air discharging cavity through a connecting pipe, the lower end of the air discharging cavity is connected with a liquid storing bag, and the other end of the electromagnetic valve is connected with a connecting mouth; the manual needle valve is fixed on the other side panel of the air discharging cavity and is connected with the air discharging cavity through a connecting pipe, and the other end of the manual needle valve is connected with a connecting mouth.