The difference between sewage pump and clean water pump
The clean water pump is used to transport clean water and other liquids with physical and chemical properties similar to clean water. It is suitable for industrial and urban water supply and drainage, high-rise building pressurized water delivery, garden sprinkler irrigation, fire pressurization, long-distance transportation, HVAC refrigeration cycle, farmland Irrigation, bathroom and other cold and warm water circulation pressurization and equipment matching.
The sewage pump can transport liquids containing solid particles such as fibers, paper scraps, and particularly dirty, sticky and slippery liquids. It is suitable for mining, papermaking, printing and dyeing, environmental protection, oil refining, petroleum, chemical, farm, dyeing, winemaking, Food, chemical fertilizers, coking plants, buildings, marble plants, mud, quicksand, mud ponds, sewage ponds, sewage treatment of thick liquid, charging and suspended matter.
Because the conveyed medium contains fibers that are easy to entangle or bunch. Therefore, the flow passage of this kind of pump is easy to be blocked. Once the pump is blocked, the pump will not work normally, and even the motor will be burned, resulting in poor sewage discharge. It has a serious impact on urban life and environmental protection.
Therefore, blocking resistance and reliability are important factors for the quality of sewage pumps: In short, the main difference between clean water pumps and sewage pumps is: the design of the impeller and the flow channel and the configuration of other parts are very different.
1. In order to prevent clogging, the sewage pump is designed with a large flow channel, which naturally leads to relatively low efficiency, so the head is generally not high. The flow path of the clean water pump is small, the clearance is also small, and the head is relatively high.
2. In order to prevent entanglement, the impeller design of the sewage pump is simpler than that of the clean water pump. There is no retaining ring but it is equipped with a serrated blade, which can crush the cloth and other debris and pump it out. The impeller of the clean water pump is more complicated, but it works efficiently. Will be significantly higher than the former.
3. In order to prevent wear and corrosion, sewage pumps generally use mechanical seals with good wear resistance and strong corrosion resistance and O-rings as the seals of the water pump, while the clean water pump does not need to be strictly considered. In summary, we can understand the problem of why the clean water pump cannot discharge sewage-because of the key design characteristics of the flow path and impeller, the clean water pump is very likely to be blocked, entangled, The occurrence of wear, corrosion, etc., causes the water pump to be damaged or scrapped, so the clean water pump cannot be used for sewage.
