What common problems should be paid attention to in the selection of sewage pump?

What are the common problems of sewage pump selection? The blowdown pump is a kind of pump which is connected with the motor and intrudes into the underwater work together. Compared with the usual vertical pump or vertical sewage pump, the blowdown pump has compact structure and small total area. Convenient installation and maintenance. Large and medium-sized sewage pumps are usually equipped with automatic coupling equipment, which can carry out automatic installation. Installation and maintenance are equivalent to convenience. Long running time.
Because the pump and motor are coaxial, the shaft is short and the rotating component is very light, the load (axial) borne on the bearing depends on the small, and the service life of the sewage pump is much longer than that of the usual pump. There are no problems such as cavitation damage and water filling. The latter ones are very convenient for the use staff. Low vibration noise, low motor leakage current, green environmental protection for the bad environment.
Type selection FAQ 1. Find out the bad environment of pump application and select the appropriate type of pump (usually wet test and dry test).
2. Calculate the required water pressure of the pump. Occasionally, customers calculate the flat transportation distance as the water pressure, which is incorrect. After the flat transportation distance is multiplied by the friction resistance, it can be calculated into the water pressure.
3. The damage of pipe bends and pipeline friction must be measured. In fact, this is all different. It is inconvenient to measure. Therefore, it is proposed to leave some space to ensure that the pump can get water.
4. If you choose a stainless steel sewage pump, you should also find out the pH value of the water body, including particle diameter, and choose a suitable metal material. Generally, 304 material is suitable for pH4 ~ 10. Beyond this scope, 316 or 316L stainless steel is proposed.
5. The pumping machine must be applied within the rated water pressure range to ensure that the motor has only load. For example, the specific required water pressure is 30m, but the pump with the standard water pressure less than 30m should be used for pumping. This situation should be an incorrect instruction, which will lead to the load of the motor. In serious cases, the motor will be burned.
6. The pump pipeline must be connected. If the pipeline is blocked, it will lead to motor load, and the motor can be burned under serious conditions.

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