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Self Priming Pump
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Self Priming Pump

Self Priming Pump

Self priming pump is a designed with an external casing that ‘floods’ the inner pump or volute. When the centrifugal pump is turned on, the impeller rotates counter clockwise, creating a low-pressure area in the eye of the impeller. As the pressure is lower than atmosphere, water is pushed up into the suction pipe by atmospheric pressure, which subsequently forces all the air in the suction line into the pump. The self-priming pump mixes the air with the recirculating water in the casing. As this occurs, the air separates from the liquid and discharges from the casing.
When all the air in the suction line is displaced, the pump delivers the flow like any other centrifugal pump.
ZX serives self priming pump is a horizontal self priming centrifugal pump. Compared with other types of self-priming centrifugal pumps, this type of pump has the simplest structure because it has no check valve itself; Small size, light weight, high efficiency, and special consideration in design. Compared with pumps of the same caliber, the displacement is large and the performance is high.
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Self Priming Pump

 

Self priming pump is a specific type of liquid pump designed to have the required liquid inside the cavity or pump body necessary to start the pumping process. This offers the potential for increased operating efficiencies in process plants where pumps are used for a variety of repeated yet intermittent operations.
If a pump is located beneath the level of the liquid to be pumped, gravity and air pressure ensure that it is constantly filled with the liquid and there can be no ingress of air into the pump or suction line.
In many applications, a pump has to be placed above the level of the liquid, for example, when emptying an underground storage tank. At start-up, there will be air in the suction line and before the pump can discharge the liquid, this air must be evacuated or displaced. Pumps are optimized to move a particular liquid; evacuating a gas is a very different challenge.
Various methods can be used to get around this problem. A secondary pump can be used to evacuate the suction line. A non-return (foot) valve or evacuation tank can be used to stop fluid draining from the suction line when the pump is stopped.
However, these solutions all involve extra equipment, piping, and processes. Ideally, for these applications, a pump is required that can evacuate air from the suction side at startup before commencing its normal pumping mode. Such a pump is considered to be self priming pump.

 

 

Products Description

 

Working Principle: Self Priming Pump
Usage:Water, Oil, Chemical, Food
Size:32-200mm
Flow:5-800m³/h
Head:12~80m
Power:1.1~90kW
Suction Head:5-6.5m
Material:Cast Iron,stainless steel
Impeller Type：Close Impeller/ Open Impeller for self priming sewage pump
Max. Temperature:120°C

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Product Structure

 

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Products Display

 

 

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Products Advantages

 

 

► Can handle a variety of liquids.
► Work well with slurries, corrosive liquids, and suspended solids.
► When compared to submersible-type pumps, self priming pump will continue to pump liquids even after the pump is no longer submerged in a liquid tank or vessel.
► Ideal for frequent and intermittent pumping operations, as the steps involving pump priming on start-up are eliminated.

 

 

Products applications

 

 

1, City environmental protection, greenhouse sprinkler irrigation, construction, fire, chemical, pharmaceutical, printing and dyeing, brewing, electric power, papermaking, electroplating, petroleum, mining, equipment cooling etc.

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2,Can be equipped to any type filter. it is the most ideal supportive pump to filter.

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