The difference between the explosion-proof sewage pump and the ordinary sewage pump is that the explosion-proof sewage pump has an explosion-proof device more than the ordinary sewage pump. The explosion-proof sewage pump is based on the submersible sewage pump. The original ordinary motor is changed to an explosion-proof motor, and an explosion-proof head is added to the lead-out cable pump body to avoid fire and explosion accidents caused by sparks from the pump body motor and wiring. The cable also uses explosion-proof submersible cables on the basis of the ordinary submersible cables used by ordinary submersible pumps, so as to meet the explosion-proof standards. The characteristics of explosion-proof submersible pumps are mainly to prohibit the use of transporting flammable and explosive liquids, because after all, the entire motor is submerged in the liquid to work Yes, if the cable is damaged or the water pump leaks, it may cause sparks and cause dangerous accidents. It can only be used in places where the environment requires explosion-proof.
The sewage pump is a pump product that is connected with a pump and a motor, and works under the liquid at the same time. Compared with a general horizontal pump or a vertical sewage pump, the sewage pump has a compact structure and a small area. Installation and maintenance are convenient. Large sewage pumps are generally equipped with automatic coupling devices for automatic installation. Installation and maintenance are quite convenient. Long continuous operation time. Since the sewage pump and the motor are coaxial, the shaft is short, and the weight of the rotating parts is light, the load (radial) on the bearing is relatively small, and the service life is much longer than that of the general pump. There are no problems such as cavitation damage and irrigation. Especially the latter point brings great convenience to the operator. The vibration and noise are small, the temperature rise of the motor is low, and it does not pollute the environment.
1. Find out the use environment of the water pump and choose the correct type of water pump (generally divided into wet and dry)
2. Calculate the required head of the water pump. Sometimes when customers encounter the flat ground transportation distance is also included in the head, this is wrong, the flat transportation distance is multiplied by the friction coefficient, and then the head can be calculated.
3. Pipeline elbow wear, pipeline friction, etc. must be included in the calculation. These are different in actual conditions, and it is quite troublesome to calculate accurately, so it is recommended to leave some space to ensure that the pump can pump water.
4. If you choose a stainless steel sewage pump, you must also figure out the pH of the water and the particle diameter, etc., and choose the appropriate stainless steel material. Generally, 304 material is suitable for PH4~10, and it is recommended to use 316 or 316L stainless steel if it exceeds this range.
5. The water pump must be used within the rated head range to ensure that the motor is not overloaded.
For example, the actual required head is 30 meters, but the standard head is less than 30 meters for pumping water. This situation is an incorrect use method, which will cause the motor to overload, and in severe cases, the motor will be burned out.
6. The water pump pipeline must be dredged. If the pipeline is blocked, the motor will also be overloaded, and the motor will be burned out in severe cases.