Water ring vacuum pump construction

The water ring vacuum pump is a commonly used vacuum device. It consists of a pump casing, an impeller, an inlet and an exhaust pipe, and a rotating shaft. The rotating shaft and the impeller are eccentrically arranged in the pump casing, and the outer circumference of the impeller is cut in one side and the inner wall of the casing. . The pump is filled with half of the water in the pump casing before starting. When the motor drives the impeller to rotate, due to the centrifugal force, the water is sucked onto the inner wall of the casing to form a rotating water ring concentric with the inner wall of the casing, the water ring and the impeller. Differently, the gap formed between the upper blades of the impeller and the inner surface of the water ring is smaller than the gap formed between the lower blades of the impeller and the inner surface of the water ring. When the impeller rotates, the gap formed between the blades and the inner surface of the water ring gradually becomes. The gas is drawn into the casing through the intake pipe; when the impeller rotates, the gap formed between the blades and the inner surface of the water ring is gradually reduced, and the sucked gas is discharged through the exhaust pipe. The impeller continuously rotates to continuously complete the suction and discharge of the gas, so that a certain degree of vacuum is reached in the working container communicating with one side of the intake pipe.
Water ring vacuum pumps can also be used to pump liquid materials. It is a simple fluid conveying device that relies on establishing a certain degree of vacuum in the system and transporting liquid materials under the pressure difference, and is particularly suitable for a cake-like liquid such as jam or tomato sauce. During the conveying process, the liquid does not pass through the complicated structure and difficult to clean the parts, and avoids the problems of corrosion and cleaning caused by the liquid passing through the pump body. However, the conveying distance is short, the lifting height is limited, and the efficiency is low.

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