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The working principle and application analysis of corrosion-resistant self-priming pump

26 Oct 2020Email

The working principle and application analysis of corrosion-resistant self-priming pump

 

 

1. Suitable for urban environmental protection, construction, fire protection, chemical industry, pharmaceuticals, dyes, printing and dyeing, brewing, electric power, electroplating, papermaking, industrial and mining washing, equipment cooling and sewage, sludge, sludge absorption, discharge and filter press;

 


2. After installing the rocker nozzle, the water can be washed into the air and scattered into small raindrops for spraying, desulfurization, denitration and smoke treatment;

 


3. It is suitable for clean water, sea water, chemical medium liquid with acidity and alkalinity, slurry with general paste, and corrosive liquid containing particles and impurities;

 


4. It can be used with any type and specification of filter press, the most ideal matching pump type to send the slurry to the filter press for filtration. The working principle of corrosion-resistant self-priming pump: The pump adopts the axial liquid return pump body structure. The pump body is composed of a suction chamber, a liquid storage chamber, a scroll chamber, a liquid return hole, a gas-liquid separation chamber, etc. After the pump is started normally, the impeller sucks the liquid stored in the suction chamber and the air in the suction pipeline together, and the impeller The inside is completely mixed. Under the action of centrifugal force, the liquid entrains the gas and flows to the outer edge of the scroll roommate, forming a certain thickness of white foam belt and high-speed rotating liquid ring on the outer edge of the impeller. The gas-liquid mixture enters the gas-liquid separation chamber through the diffuser.

 

 

At this time, due to the sudden decrease of the flow rate, the lighter gas is separated from the mixed gas-liquid, and the gas continues to rise and discharge through the pump body spout. The degassed liquid returns to the liquid storage chamber, enters the impeller again through the return hole, and mixes again with the gas sucked in from the suction pipe inside the impeller, and flows to the outer edge of the impeller under the action of the high-speed rotating impeller. As this process goes on again and again, the air in the suction pipeline is continuously reduced until the gas is exhausted and the self-priming process is completed, and the pump is put into normal operation.

 

 

There is no cooling chamber at the bottom of the bearing body of some pumps. When bearing heating causes the temperature of the bearing body to rise more than 70 degrees Celsius, any cooling liquid pipe joint can be injected into the cooling chamber to circulate cooling. The sealing mechanism inside the pump to prevent the liquid from leaking from the high-pressure zone to the low-pressure zone is the front and rear seal rings. The front seal ring is installed on the pump body and the rear seal ring is installed on the bearing body. When the pump runs for a long time, the seal ring is worn to a certain extent and When it affects the efficiency and self-priming performance of the pump, it should be replaced.

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