Difference Between Sewage Pump And Clean Water Pump

According to the different conveying media, submersible pumps can be divided into clean water submersible pumps suitable for conveying clean media and dirty water submersible pumps that can be used to convey liquids containing particulate impurities. Submersible pump is a type of water pump widely used in industry, agriculture, municipal engineering and other fields. Since the overall operation is underwater, it does not occupy the ground during installation, and does not require other measures, and is not affected by external weather such as wind and rain, so it is chosen to be used in various working conditions. In actual use, the clean water submersible pump can only transport dry clean water, while the sewage submersible pump can transport both sewage and clean water. If you look at the users, you will understand why you need to produce clean water submersible pumps. Even if it is clean water that needs to be transported during cleaning, you will choose a submersible sewage pump to buy. For this reason, Deneng Pump Industry introduces the difference between clean water submersible pumps and sewage submersible pumps, so that users can have a deeper understanding of submersible pumps, and then choose the appropriate submersible pump model according to their own working conditions.

The main difference between submersible pumps and submersible sewage pumps is that they are equipped with different impellers. The submersible pump adopts a closed impeller, and the blades of the impeller are clamped by the front and rear cover plates. If the conveyed medium contains solid particles and fibers, it is easy to get stuck in the blades and cause blockage, so it is only suitable for conveying clear water liquids. But its working efficiency is high, and it can be connected in series to make a high-lift multi-stage pump. Generally, ordinary booster centrifugal pumps use this impeller.

The large-diameter sewage pump adopts a semi-open impeller with only a rear cover or an open impeller with no cover on both sides. It is relatively dry to remove one side or all of the front and rear covers that enclose the impeller. Since the blades are not closed, the non-clogging sewage discharge ability is strong. Coupled with the design of the large runner, even if the conveyed medium contains particulate impurities, it can be conveyed smoothly, but the operating efficiency is much lower than that of the closed impeller clean water submersible pump.

To sum up, the clear water submersible pump has high working efficiency, and a high-lift multistage pump can be made by connecting multiple impellers in series. However, it does not have the sewage discharge capacity of a non-clogging sewage pump and can only rely on the delivery of clean water. Although the sewage pump has the ability to discharge sewage, its work efficiency is low and its lift cannot be too high. Therefore, the user is carefully selecting the submersible sewage pump according to the medium to be pumped.