Self priming ispumpOne of the properties of.When the pump is started, the pump itself can automatically pump out the gas in the suction pipeline and fill it with delivered gasliquid, that is, it is not necessary toPriming pump。It can avoid possible injury to personnel and equipment due to pump filling (manual work) when transporting highly corrosive materials.
Chinese name
Self-priming
Role
It can avoid conveying highly corrosive materials.
Some pumps that cannot self-priming themselves can also have self-priming capacity by adding necessary mechanisms through special design, such asSelf priming centrifugal pump。
Self priming, mainly used inWater pump、Liquid pumpIs an important parameter.
meaning
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As the name implies, self-priming refers to "having the function of automatically absorbing water", that is, before the pump works, the pump can automatically pump up and discharge the water below the pumping end of the pump without adding "water diversion" in advance.
principle
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PumpPumping pipeIt is formed when the pump is working under the condition of air insidenegative pressure（vacuum）, onAtmospheric pressureUnder the action of, the water pressure will be lower than the water pumping port, and then discharged from the drainage end of the pump.There is no need to add "water diversion" before this process.The water pump with this capability is called“Self priming water pump”。
SomeCentrifugalorRotary vane typeBefore water absorption, the pump must add "water diversion" to form a closed environment in the pump chamber, and then the pump can form a negative pressure to achieve the purpose of water absorption.For example, manual operation used in rural areasWater pump。For pumps without self-priming capacity, it is troublesome to add "water diversion" before each use.
The height of self-priming is called“Suction range”。The unit is generally "meter";
The suction head is related to the pump power, flow, structure, etcmicro pumpIt is not easy to make a high self-priming suction range ofAtmospheric pressureThe water pressure can be increased to a height of 10.3m at most, so the maximum self suction lift is about 10.3m.For example, there is a micro water pump BSP27160 whose self-priming lift can reach 4 meters, which is even higher.
