Multi-stage pump is a kind of centrifugal pump (multi-stage centrifugal pump), is relying on the rotation of the impeller in the acquisition of centrifugal force to the centrifugal state of the liquid, can be used as a circulating water pump In the body of the multi-stage pump is equipped with the appropriate amount of water as the working fluid. When the impeller rotates in the clockwise direction, the water is thrown around by the impeller, due to the role of centrifugal force, the water forms a closed ring of approximately equal thickness that determines the shape of the pump chamber. The lower part of the inner surface of the water ring is exactly tangent to the impeller hub, and the upper inner surface of the water ring is just in contact with the top of the blade (in fact, there is a certain insertion depth of the blade in the water ring). At this point, stainless steel multi-stage pump impeller hub and water ring between the formation of a crescent-shaped space, and this space is divided into the impeller and the number of blades equal to a number of small cavities.
If the lower part of the impeller 0 ° as a starting point, then the impeller in the rotation of the first 180 ° when the volume of the small cavity from small to large, and with the end of the face of the suction port, at this time the gas is sucked in, when the end of the suction when the small cavity and suction port isolation. When the multistage pump impeller continues to rotate, the small cavity from large to small, so that the gas is compressed; when the small cavity and the exhaust port, the gas will be discharged from the pump. In general, multi-stage pump relies on the change of pump chamber volume to achieve suction, compression and exhaust, so it is a centrifugal pump that can change volume.
In general, a multistage centrifugal pump relies on changes in pump chamber volume for suction, compression and discharge, so it is a centrifugal pump that can vary its volume.
Stainless steel multi-stage pumps can be used in many industrial sectors such as petroleum, chemical, machinery, mining, light industry, medicine and food. Multi-stage centrifugal pumps are widely used in many processes of industrial production, such as vacuum filtration, vacuum priming, vacuum feeding, vacuum evaporation, vacuum concentration, vacuum rewetting and vacuum degassing, etc. Stainless steel multi-stage pumps are widely used. Stainless steel multistage centrifugal pumps can pump out flammable and explosive gases, in addition to dusty and watery gases. Therefore, stainless steel multistage pumps have been widely appeared in different fields and industries.
