Working Principle of Liquid Ring Vacuum Pump

Liquid Ring Vacuum Pump has many series, such as 2BV series liquid ring vacuum pump, 2BE series liquid ring vacuum pump, 2SK series liquid ring vacuum pump, SK series liquid ring vacuum pump, SZ series liquid ring vacuum pump.

Liquid Ring Vacuum Pump

These liquid ring vacuum pumps have different vacuum degrees, but they are similar in principle. Here, Liquid Ring Vacuum Pump Manufacturer introduces the working principle of 2BV series liquid ring vacuum pump:

The impeller is eccentrically installed in the pump body. When the impeller rotates, the water entering the liquid ring vacuum pump pump body is thrown around by the impeller. Due to the action of centrifugal force, the water forms a closed water of the same thickness as the pump cavity ring. The upper inner surface of the water ring is just tangent to the impeller hub, and the lower inner surface of the water ring is just in contact with the tip of the blade (in fact, the blade has a certain depth of insertion in the water ring). At this time, a crescent-shaped space was formed between the impeller hub and the water ring, and this space was divided into several small cavities equal to the number of blades by the impeller. If the upper part of the impeller is 0 ° as the starting point, then when the impeller rotates 180 ° before, the volume of the small cavity gradually changes from small to large, the pressure continuously decreases, and it communicates with the suction port on the suction and exhaust plate. The pressure in the space is lower than the pressure in the pumped container. According to the principle of gas pressure balance, the pumped gas is continuously pumped into the small cavity, which is now in the process of inhalation. When the suction is completed, it is isolated from the suction port, the volume of the small cavity is gradually decreasing, and the pressure is continuously increasing. At this time, it is in the compression process. When the compressed gas reaches the exhaust pressure in advance, it advances from the auxiliary exhaust valve. exhaust. The volume of the small cavity communicating with the exhaust port further reduces the pressure and further increases the pressure. When the pressure of the gas is greater than the exhaust pressure, the compressed gas is discharged from the exhaust port. During the continuous operation of the pump, the The process of suction, compression and exhaust is carried out in order to achieve the purpose of continuous pumping.

The water in the circulating water tank generates a certain pressure and flow rate after the work of the circulating water pump. The water with a certain pressure and flow rate enters the water collecting chamber of the water ejector and is sprayed by multiple Laval nozzles on the orifice plate. The mixing chamber of the ejector generates a vacuum, and the pumped medium enters the ejector mixing chamber under the action of the vacuum. In the mixing chamber, it is fully mixed with the high-speed water flow, and is vented to the circulating water tank after being reduced and pressurized by the venturi tube. The gas is precipitated, and the condensable vapor overflows from the overflow of the water tank, so the work is repeated. It has the advantage of a low-position type, which has a higher degree of vacuum than a water ring vacuum pump. Instead of a W-type reciprocating vacuum pump, the front condenser can be eliminated, saving one-time equipment investment and operating costs.

The above is the working principle of the liquid ring vacuum pump introduced by Centrifugal Pump supplier.