Vacuum Pump Structure and Working Principle

Liquid Ring Vacuum Pump Manufacturerexplain the principle of liquid ring vacuum pumps: Liquid Ring Vacuum Pumps are eccentrically mounted in the pump housing with a multi-blade rotor. When it rotates, the liquid is thrown to the pump casing and forms a liquid ring concentric with the pump casing. The liquid ring and the rotor blade form a rotary variable capacity vacuum pump with a periodic volume change.

Liquid ring vacuum pumps are vacuum pumps that make the volume of the working chamber periodically change by the rotary motion of the offset impeller in the pump cavity. Its working room consists of a rotating liquid ring and an impeller, and its structure and working principle are similar to those of a liquid ring compressor.

When the working liquid is water, it is called a water ring vacuum pump. The water ring vacuum pump is a rough vacuum pump. The ultimate vacuum that it can obtain is 2000 ~ 4000Pa, and the serial atmospheric ejector can reach 270 ~ 670Pa.

When the impeller rotates clockwise in the figure, the water is thrown around by the impeller. Due to the centrifugal force, the water forms a closed ring of approximately equal thickness determined by the shape of the pump cavity. The inner surface of the lower part of the water ring is exactly tangent to the impeller hub, and the upper inner surface of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this time, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is divided into several small cavities equal to the number of blades by the impeller. If the lower part of the impeller is 0 ° as the starting point, the volume of the small cavity changes from small to large when the impeller rotates 180 ° before the impeller is connected to the suction port on the end face. At this time, the gas is sucked in, and when the suction ends, the small cavity It is isolated from the suction port; when the impeller continues to rotate, the small cavity changes from large to small, so that the gas is compressed; when the small cavity communicates with the exhaust port, the gas is discharged out of the pump.

At the same time, you should pay attention to the following points when maintaining the vacuum pump: 1. Always check the oil level position, and adjust it to meet the requirements when it does not meet the requirements. When the vacuum pump is running, the oil level is to the center of the oil mark. 2. The oil change period is considered according to the actual conditions of use and whether it can meet the performance requirements, which is determined by the user. Generally, when a new vacuum pump is used to remove clean and dry gas, it is recommended to change the oil once every 100 hours of operation. After the ferrous metal powder is not seen in the oil, the oil change period can be appropriately extended in the future. 3. Frequently check the oil quality and find that the oil is deteriorated and replace it with new oil in time to ensure that the vacuum pump works normally. 4. In the first month of the vacuum pump, the lubricant is changed after 100 hours, and every 500 hours thereafter, the oil is changed once. 5. In general, the vacuum pump should be repaired after 2000 hours of work, check the ageing of the rubber seal, check whether the exhaust valve disc is cracked, and clean up the dirt deposited on the valve disc and exhaust valve seat. Clean the parts inside the vacuum pump cavity, such as rotor, rotor, spring, etc. It is usually washed with gasoline and dried. After cleaning the rubber parts, wipe them with a dry cloth. Handle with care when cleaning and assembling.

The above is the introduction of liquid ring vacuum pump. If you need, you can contact the Liquid Ring Vacuum Pump Wholesale.