Water ring vacuum pump working principle Detailed Water ring vacuum pump (water ring pump) is a rough vacuum pump, it can get the ultimate vacuum of 2000 ~ 4000Pa, series of air ejectors up to 270 ~ 670Pa. Water ring pump can also be used as a compressor, called the water ring compressor, is a low pressure compressor, the pressure range of 1 ~ 2 × 105Pa gauge pressure. Water ring pump was originally used as a self-priming pump, and then gradually used in petroleum, chemical, machinery, mining, light industry, medicine and food and many other industrial sectors. In many industrial processes, such as vacuum filtration, vacuum water diversion, vacuum feed, vacuum evaporation, vacuum concentration, vacuum resurgence and vacuum degassing, water ring pump is widely used. Due to the rapid development of vacuum application technology, water ring pumps have gained much attention in the area of ​​rough vacuum. As the water ring pump gas compression is isothermal, it can be extracted flammable and explosive gases, in addition to pumping dust, water-containing gas, therefore, water ring pump applications are increasing. Water ring vacuum pump principle of operation such as schematic: In the pump body with the right amount of water as the working fluid. When the impeller rotates clockwise in the direction indicated 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 depending on the shape of the pump chamber. The inner surface of the upper part 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 tip of the blade (in fact there is a certain insertion depth of the blade in the water ring). At this point the impeller hub and the water ring form a crescent-shaped space, and this space has been divided into a number of impeller leaves the same number of small cavities. If the upper part of the impeller 0 ° as a starting point, then the impeller at 180 ° before rotation when the small chamber volume from small to large, and the end of the suction port communicating, when the gas is inhaled, when the end of the inhalation chamber When the impeller continues to rotate, the small cavity becomes smaller and the gas is compressed; when the small chamber communicates with the exhaust port, the gas is discharged outside the pump. In summary, the water ring vacuum pump working principle is the water ring pump is based on changes in pump volume to achieve suction, compression and exhaust, so it belongs to the varactor vacuum pump.
