Self-priming centrifugal pump, and the difference between general centrifugal pump? _

by:J&T     2020-05-20

self-priming pump is a kind of centrifugal pump, it is divided into self-priming and general inhalation, often customers don't understand the self-priming centrifugal pump and centrifugal pump commonly between, what's the difference between the following constant only company to introduce to you,

ordinary centrifugal pump and self-priming centrifugal pump:

1. General centrifugal pump is introduced:

mainly self-priming pump inlet piping does not need to install the bottom valve after the first filling of water diversion can suck up the water, later don't need to add water diversion, the pump body is bigger than a centrifugal pump, a lot of their own with a water storage function, has the function of a water diversion life-long self-priming centrifugal pump is have the effect of pressure, liquid level must be higher than the pump, to be able to flow into the pump body to start, if the level is lower than centrifugal pump can only install the bottom valve in import pipeline suction pump and piping inside the filling of liquid to achieve self-priming function, or the import installation guide tank, such as pump centrifugal pump don't work for a long time, in his second start import pipeline and the inside of the pump body is basically did not have the water, and irrigation water diversion, once again more trouble on the operation, because of long time need not import bottom valve seal of centrifugal pump can't achieve the result of completely sealed liquid will slowly back to the pool of water leakage, so in need of self-priming function condition, self-priming pump is better than centrifugal pump effect. ( Below is a regular inhaled small centrifugal pump)

2。 Self-priming centrifugal pump is introduced:

self-priming centrifugal pump adopts axial water pump body structure of the liquid. Centrifugal pump body by suction chamber, the liquid storage chamber, coil vortex chamber, the liquid hole, and other components of the gas-liquid separation chamber, start centrifugal pumps, the impeller of the suction chamber in the liquid and the suction tube with air suction, and can completely mixed within the impeller, in under the action of centrifugal force, the liquid entrainment to vortex flow volume outside edge, this gas in the impeller outer edge is formed on a certain thickness of white foam belt and high-speed rotating liquid ring. Gas-liquid mixture through the diffusion tube into the gas separation chamber. At this time, due to the flow rate suddenly drops, lighter gas is separated from the mixed liquid, gas through the pump body to vomit exports continue to rise. . Repeatedly to proceed with this process, decreasing the air in the suction pipe, until all air, self-priming pump is complete imbibition process, centrifugal pump was put into normal operation. Because of the centrifugal pump has the unique ability of exhaust, so the self-priming pump can deliver a gas liquid, without bottom valve installation, when used on the cruise ship has the good function of stripping. ( The image below for small self-priming centrifugal pump)

as above is the difference between ordinary centrifugal pump and self-priming centrifugal pump, centrifugal pump has many kinds of function, selection of pump according to your requirement, don't mixed up.

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