How to choose self-priming pump?

There are many types of self-priming pumps, different functions, and different quality levels. How should I choose a self-priming pump?

This article contains the following:

Choose self-priming pump according to local conditions

Water pumps should be properly selected

Self-priming pump features

1. Choose self-priming pump according to local conditions

The commonly used self-priming pumps are divided into the following three according to the principle of action:

a. Working process of gas-liquid hybrid self-priming pump: Due to the special structure of the self-priming pump body, after the pump stops, there is a certain amount of water in the pump body. After the pump is started again, the air in the pipeline is sucked due to the rotation of the impeller. Fully mixed with water and discharged into the gas-water separation chamber, the gas in the upper part of the gas-water separation chamber overflows, the water in the lower part returns to the impeller, and remixes with the remaining air in the suction line until all the gas in the pump and suction pipe is discharged. Complete self-priming and pump normally.

b. The water ring wheel self-priming pump is to combine the water ring wheel and the water pump impeller in a shell, and use the water ring wheel to discharge the gas to achieve self-priming. When the pump works normally, the channel of the water ring wheel and the water pump impeller can be cut off by the valve, and the liquid in the water ring wheel can be drained.

c. Jet self-priming pump.It is composed of a centrifugal pump and a jet pump (or ejector), and relies on the spray device to create a vacuum at the nozzle to achieve suction.

2. Water pumps should be properly selected

After determining the type of pump, we must consider its economic performance, especially pay attention to the choice of pump head and flow and its supporting power. It must be noted that the pump head (total head) indicated on the pump's label is different from the water outlet head (actual head) in use, because there will be a certain resistance loss when the water flows through the water pipe and the pipeline. Therefore, the actual head is generally 10% to 20% lower than the total head, and the water output is also reduced accordingly.

Therefore, in actual use, it can only be estimated from 80% to 90% of the head and flow rate marked on the sign. The choice of power for the pump can be selected according to the power indicated on the sign. In order to make the pump start quickly and use safely, the power machine The power can also be slightly larger than the power required by the water pump, which is generally about 10% higher. If you already have power, when you buy a water pump, you can buy the matching water pump according to the power of the power machine.

3.Self-priming pump features

The overflow parts of the FZB self-priming pump are all made of fluoroplastic and have self-priming function. The FZB self-priming pump adopts humanized design and excellent working performance, and has become an indispensable pump equipment for more and more users. one.

The FZB self-priming pump is extremely versatile, pumping corrosive liquids in the underground tank to the target location, pumping the acid and alkali in the acid and alkali tank with no outlet at the bottom to the target location, or used for circulation between multiple acid tank , Or used for unloading acid, widely used in chemical industry, pesticides, acid and alkali production, papermaking, pickling process, electronics and other industries.

If you want to buy self-priming pumps,please contact SUOTO PUMP.