QD Type Multi-stage Submerged Pump is equipped with a protection device. The motor is located at the top of the electric pump and is a single-phase or three-phase asynchronous motor. The pump is located at the bottom of the motor and is a centrifugal impeller and volute structure. A double-end face mechanical seal is used between the water pump and the motor, and each fixed stopper seal adopts an "O"-type rubber seal ring for static sealing. Because of its small size and light weight, this series of electric pumps are suitable for underground water extraction in rural areas,farmland irrigation, garden watering, domestic water use, and can also be used to drain industrial water accumulation, construction water supply and drainage, and aquaculture.
1. The temperature of the water source to be transported should be less than +40℃;
2. For the standard series: the pH of the medium should be between 6.5 and 8.5;
For the stainless steel Submerged Pump series: the pH of the medium should be between 4 and 10;
3. The volume ratio of solid impurities should not exceed 0.1%, and the particle size should not be larger than 0.2mm;
4. The power supply frequency is 50Hz, the single-phase voltage is 220V, the three-phase voltage is 380V, and the voltage fluctuation range is 0.9~1.1 times the rated value;
5. The head used should not be less than 80% of the rated head of the electric pump, and the submersion depth should not exceed 5m.
