water ring vacuum pump principle

The water ring vacuum pump was originally used as a self-priming pump, and then gradually used in many industrial sectors such as oil, chemical, machinery, mining, light industry, medicine and food. In many industrial production process, such as vacuum filter, vacuum water diversion, vacuum feed, vacuum evaporation, vacuum concentration, vacuum resurgence and vacuum degassing, water ring vacuum pump has been widely used. Due to the rapid development of vacuum application technology, water ring vacuum pump has been paid much attention in the field of coarse vacuum. Because the gas compression is isothermal in the water ring vacuum pump, it can remove the flammable and explosive gas, besides, it can also remove the gas containing dust and water, so the application of water ring pump is increasing.

Working principle of water ring vacuum pump:

In the water ring vacuum pump body, a suitable amount of water is used as the working fluid. When the impeller is rotating clockwise, the water is cast around by the impeller. Due to the effect of centrifugal force, the water forms a closed circle which is determined by the shape of the pump chamber, which is similar to the thickness. The lower part of the water ring is tangent to the impeller hub, and the upper part of the water ring meets the tip of the blade.

At this point, a crescent space is formed between the impeller hub and the water ring, and this space is divided into a number of small Chambers with the same number of blades. If the bottom of the impeller 0 ° as starting point, so in front of the rotating impeller 180 ° when small cavity volume changes from small to big, and with suction mouth on the face, the gas is inhaled, when the suction at the end of the small cavity is isolated from the rest of inspiratory mouth; When the impeller continues to rotate, the small cavity is smaller and the gas is compressed; When the small cavity communicates with the vent, the gas is expelled from the pump. To sum up, the water ring vacuum pump is designed to achieve inspiratory, compression and exhaust by the change of the volume of the pump chamber, so it is a variable volume vacuum pump.

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