Now the use of water ring vacuum pump is more and more widely used, the manufacturers of this kind of products are more and more, the products in the market are dazzling, which is easy for us to choose the eye. In order to choose the cheap and fine products, I think it is necessary for us to learn about its working principle, principle of understanding is very important, it can help us make better use of vacuum pump, detailed introduce below.
A suitable amount of water is used as working fluid in the pump body. When the direction of the impeller indicates clockwise rotation, 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 approximately equal to the thickness. The upper part of the water ring is tangent to the impeller hub, and the inner surface of the water ring is just in contact with the tip of the blade (in fact, there is a certain insertion depth in the water ring). 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 equal number of blades. If the upper part 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 on the face of inspiratory mouth, air is sucked into at this time, 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.
Water ring vacuum pump is by installed in the pump shell with more than the eccentricity of the rotor blades, threw the water in the pump shell formation and pump casing concentric rings of water cycle water ring and the rotor blade formed the volume change to gas suction, compression side by side, it has the advantage of low vacuum large swept volume, can direct suction vapor non-condensable gas.
The working principle of the water ring vacuum pump is quite simple. We just need to know about it. Knowing how it works can also help us better analyze which pumps are of good quality and avoid being cheated in the process of buying.