self-priming centrifugal pump

Short Description:

Main advantages: 1. Strong sewage discharge capacity 2. High efficiency and energy saving 3. Good self-priming performance

Main application places: suitable for clear water, sea water, water, chemical medium liquid containing acid and alkali, and general paste slurry. Mainly used in urban environmental protection, construction, fire protection, chemical industry, electric power, electroplating, papermaking, petroleum, mining, equipment cooling, tanker unloading, etc.

Product Detail

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product description

Self-priming centrifugal pump is a kind of centrifugal pump. Refers to the centrifugal pump that can automatically pump out the gas in the suction pipe and normally deliver the liquid without priming the pump when it is started again, except that it needs to be primed before the first start.

The pump is equipped with a suction chamber at the inlet, and the suction pipe is above the center line of the impeller. After the pump is stopped, a part of the liquid remains in the suction chamber. The suction impeller, after mixing in the impeller (inner mixing type) or at the outlet of the impeller (outer mixing type), enters the gas-liquid separation chamber added at the outlet to separate the gas and liquid, the gas is discharged out of the pump, and the liquid returns to the suction chamber until the suction pipe Filled with fluid, delivers fluid normally. The self-priming process can be completed within tens of seconds, and the self-priming capacity can reach more than 9m water column.

working principle

The working principle of the self-priming centrifugal pump is: the self-priming centrifugal pump can send water out due to the centrifugal force. Before the pump works, the pump body and the water inlet pipe must be filled with water to form a vacuum state. When the impeller rotates rapidly, the blades make the water rotate quickly, and the rotating water flies away from the impeller under the action of centrifugal force, and the water in the pump After being thrown, the central part of the impeller forms a vacuum area. Under the action of atmospheric pressure (or water pressure), the water in Suyuan is pressed into the water inlet pipe through the pipe network. The circulation is endless like this, just can realize continuous pumping. It is worth mentioning here that the self-priming centrifugal pump must be filled with water in the pump casing before starting, otherwise it will cause the pump body to heat up, vibrate, reduce the water output, and cause damage to the pump [3] (referred to as “cavitation”) causing equipment failure.


1. Strong sewage discharge capacity: the special anti-clogging design of the impeller ensures that the pump is efficient and non-clogging.

2. High efficiency and energy saving: using excellent hydraulic model, the efficiency is 3-5 times higher than that of general self-priming pumps.

3. Good self-priming performance: the self-priming height is 1 meter higher than that of ordinary self-priming pumps, and the self-priming time is shorter

Application range

1. Applicable to urban environmental protection, construction, fire protection, chemical industry, pharmaceuticals, dye printing and dyeing, brewing, electric power, electroplating, papermaking, petroleum, mining, equipment cooling, oil tanker unloading, etc.

2. It is suitable for clean water, sea water, water, chemical medium liquid with acid and alkalinity, and slurry with general paste (media viscosity is less than or equal to 100 centipoise, and the solid content can reach less than 30℅).

3. Equipped with a rocker-type nozzle, the water can be flushed into the air and sprayed into fine raindrops. It is a good tool for pesticides, nurseries, orchards, and tea gardens.

4. It can be used with any type and specification of filter press, and it is the most ideal matching pump for sending slurry to the filter for press filtration.

5. Used for water circulation in swimming pool filtration system.

6. Pumping clean water or mild sewage with suspended particles

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