Self-priming Pump Working Principle and Installation and Use Matters

The working principle of the self-priming pump is an ordinary centrifugal pump. If the suction liquid level is below the impeller, it should be filled with water before starting, which is very inconvenient. In order to store water in the pump, a bottom valve needs to be installed at the inlet of the suction pipe. When the pump is working, the bottom valve causes a great hydraulic loss. The so-called self-priming pump does not need to be filled with water before starting. After a short period of operation, the pump itself can suck up the water and put it into normal operation.

The self-priming pump is a single-stage single-suction centrifugal pump. The product does not require a bottom valve. After adding liquid for the first time, it can output the liquid after starting. Brewing, beverage, alcohol, food and other industries. The self-priming pump only needs to infuse the priming before the first start, and it is not necessary to repeat the priming in the future. When the self-priming pump sucks the medium, the fluid can be intermittently intermittent, and the intermittent is equipped with a liquid suction chamber, a liquid storage chamber, a liquid return check valve, a gas separation chamber, and a return hole.

Precautions for installation of self-priming pump

1. First check whether the bolts are loose everywhere, whether the power cord and plug are in good condition, and the insulation resistance of the motor should be greater than 2 megohms.

2. In order to prevent electric shock accidents, corresponding security measures such as leakage circuit breakers or electric shock protectors must be installed, and reliable grounding must be carried out

3. The working voltage of Equan self-priming pump must be between +5% and -12% of the rated voltage, otherwise it will shorten the service life of the motor or burn out. If the electric pump is used far away from the power source, the power transmission line should be thickened appropriately, otherwise the voltage will drop and it will not be able to operate.

4. Turn on the power switch, let the pump idling for about 2 minutes, and check whether it starts, runs normally, and whether the direction of rotation is correct.

5. Fix the pump body and use a steel pipe or rubber tube (not too soft to avoid flattening) to connect the water inlet and the bottom valve. The bottom valve must be placed perpendicular to the horizontal plane and more than 30cm away from the bottom to avoid sucking mud and sand.

6. Before using the clean water centrifugal pump and the automatic clean water pump, the water storage tank should be filled with water. After tens of seconds after power on, the water can not be automatically discharged, and there is no need to fill the water in the future.

7. Before using the self-priming clean water pump and the automatic self-priming clean water pump pipe, the water storage tank should be filled with water. After tens of seconds after power on, the water can not be automatically discharged, and there is no need to fill the water in the future.

8. When using, the motor should be kept dry, pay attention to the drop of the water level, and the bottom valve should not be exposed out of the water surface. When the temperature is lower than 40C. Anti-freezing work should be done to avoid freezing and cracking the pump body.

9. If it is not used for a period of time, drain the water in the pump, scrub the main parts clean, apply anti-rust oil, and place it in a ventilated and dry place for later use.