Four major factors when choosing a submersible sewage pump: flow, head, voltage, size

The first thing to consider when purchasing a submersible sewage pump is the environment in which the submersible sewage pump is used. If it is ordinary sewage, then a QW submersible sewage pump will do. If there is sediment, you need to choose a JYWQ mixing sewage pump. If it contains debris, you need to choose When purchasing a belt cutting submersible sewage pump, of course you must also consider the medium of the sewage. For ordinary sewage, cast iron is sufficient. If the sewage is relatively acidic, you need to purchase a stainless steel submersible sewage pump.

But after determining these, the four most important parameters must also be determined, as follows:

1. Submersible sewage pump flow:

Submersible sewage pumps are products that must be equipped and installed before design for industrial enterprises, municipal projects and other projects. When selecting the pump, you must consider that heavy rains, typhoons, etc. may cause waterlogging in enterprises, cities, etc., and the designed flow rate must ensure the occurrence of special circumstances. Generally, there are main water pumps and auxiliary pumps.

2. Submersible sewage pump head:

The lift of a submersible pump must comprehensively consider various factors such as vertical height, horizontal distance, and elbows. Under normal circumstances, the selected submersible sewage pump should be within 20% of the required lift; if the lift is lower than the required lift, water cannot be pumped. If the lift is too high, the submersible pump will exceed the rated flow rate, and the motor will experience overcurrent. This may cause the machine to overheat or even burn out.

3． Submersible sewage pump power supply voltage:

The motor voltage of three-phase power supply is 380V; the motor voltage of single-phase power supply is 220V. Civilian electricity generally uses 220V single-phase sewage pumps, industrial enterprises generally choose 380V three-phase sewage submersible pumps, and mining enterprises generally choose 660V/1140V explosion-proof types.

4. Dimensions and methods of submersible sewage pumps:

The size of the submersible sewage pump plus the elbow is generally larger. The size of the sewage pit must be fully taken into consideration. If it is too small, heat dissipation will not be timely. There are two commonly used installation methods for submersible pumps, namely mobile installation and coupling installation. Among them, the mobile installation is relatively simple. You only need to hang the pump with a rope and lift it into the sewage pool. The coupled installation is more complicated and can be carried out under the guidance of the manufacturer. The auxiliary devices: hoists, stainless steel chains, guide rails, etc. must be equipped .

Selection of submersible sewage pump is a relatively complex but relatively simple process. First, you must know the key points of selection. You must first know the discharged sewage medium, and then select the appropriate flow rate, lift, motor power, installation size, etc. If you have any questions about submersible sewage pump selection, please contact our Dingfei Pump Industry staff