Water ring vacuum pump principle and structure

[Asia Fluid Network News] Water ring vacuum pump is a rough vacuum pump, the working pressure range (1 - 2) X105Pa gauge pressure. Water ring vacuum pump in vacuum filtration, vacuum feed, vacuum degassing, vacuum evaporation, vacuum concentration and vacuum regurgitation, has been widely used, because the water ring pump is compressed gas process isothermal, it can be extracted flammable, Explosive gas, in addition to pumping dust, water-containing gas, therefore, water ring vacuum pump is increasingly used. Understanding how it works is crucial to the product's use. Next, the main principle of water ring vacuum pump works: Water ring vacuum pump principle and structure diagram Water ring pump is the impeller, the pump body, suction exhaust plate, water ring formed in the pump body water ring, suction port, exhaust port , Auxiliary exhaust valve and other components. The impeller is eccentrically installed in the pump body, when the impeller rotates in the direction of the figure, the water entering the water ring vacuum pump body is thrown around by the impeller. Due to the centrifugal force, the water forms a shape similar to that of the pump cavity Thick closed water ring. The upper inner surface of the water ring is just tangential to the impeller hub and the lower inner surface of the water ring is just in contact with the top of the blade. At this point, a crescent-shaped space is formed between the impeller hub and the water ring, and this space is again divided into a number of small cavities equal to the number of blades by the impeller. If the upper part of the impeller 0 ° as a starting point, then the impeller 180 ° before rotation, the volume of the small chamber gradually from small to large pressure continues to decrease, and suction and exhaust port on the suction port connected to the small chamber space The pressure inside the vessel is lower than the pressure inside the vessel being pumped, and according to the principle of gas pressure balance, the pumped gas is continuously drawn into the small cavity and is in the process of inhalation. When inhalation is completed with the suction port isolated, small chamber volume is gradually reduced, the pressure continues to increase, this time in compression, when the compressed gas reaches the exhaust pressure in advance, from the auxiliary exhaust valve advanced exhaust. Because the water ring vacuum pump is not a direct exhaust valve, and exhaust pressure is always fixed, the water ring pump compression ratio depends on the end of the intake port and the exhaust start position, but the two positions are Fixed, and therefore not suited to changes in suction pressure needs. In order to solve this problem, the rubber ball valve is generally arranged below the exhaust port, so that when the pump chamber reaches the exhaust pressure prematurely, the ball valve is automatically opened and the gas is discharged, thereby eliminating the over-compression phenomenon. As the water ring vacuum pump to increase the scope of use, to understand how it works to improve the competitiveness of products and creativity become even more important. According to the analysis we can know water ring vacuum pump is to use the rotor vacuum pump equipment. How to maximize its role, which also requires professionals to do more research and development. A class of products is good or bad, not only reflected in the price, but also should be reflected in its practicality. Related Articles: Principle and structure of cryogenic pump Sputtering ion pump principle and structure diagram