Usage and advantages of sewage pump in the project

The submersible sewage pump is a kind of pump product which is connected with the motor and works underwater at the same time. Compared with the general horizontal pump or vertical sewage pump, the submersible sewage pump has the following advantages:
1. Compact structure and small floor area. Since the submersible sewage pump works underwater, it can be directly installed in the sewage tank without building a special pump house to install pumps and machines, which can save a lot of land and infrastructure costs.
2. Easy installation and maintenance. Small submersible sewage pumps can be installed freely, and large submersible sewage pumps are generally equipped with automatic coupling devices for automatic installation, which is quite convenient for installation and maintenance.
3. Long continuous operation time. Because the pump and motor are coaxial, the shaft is short, and the rotating parts are light, the load (radial) borne by the bearing is relatively small, and the service life of the submersible sewage pump is much longer than that of the general pump.
4. There is no cavitation damage, irrigation and water diversion. In particular, the latter point brings great convenience to operators.
5. Low vibration and noise, low motor temperature rise, no pollution to the environment.
It is precisely because of the above advantages that submersible sewage pumps have been paid more and more attention by people, and the scope of use has become wider and wider. From the original simple use of conveying clean water to the present, they can convey all kinds of domestic sewage, industrial wastewater, construction site drainage, liquid feed and so on.
It plays a very important role in municipal engineering, industry, hospital, construction, hotel, water conservancy construction and other industries.
However, everything is divided into two, and the most critical issue for the submersible sewage pump is the availability, because the submersible sewage pump is used underwater; The medium to be conveyed is some mixed liquids containing solid materials; The pump is close to the motor; The pump is arranged vertically, and the weight of rotating parts and the water pressure borne by the impeller are in the same direction. These problems make the requirements of submersible sewage pump in sealing, motor bearing capacity, bearing arrangement and selection higher than those of ordinary sewage pumps.
In order to improve the service life of the submersible sewage pump, most manufacturers at home and abroad are now trying to find ways to protect the pump, that is, when the pump has leakage, overload, overtemperature and other faults, it can automatically alarm and automatically stop for repair. However, we believe that it is necessary to set up a protection system in the submersible sewage pump, which can effectively protect the safe operation of the electric pump.
However, this is not the key to the problem. The protection system is only a remedy after the pump fails, which is a more passive method. The key to the problem should be to start from the root and completely solve the problems of sealing and overload of the pump, which is a more active way. Therefore, we apply the hydrodynamic sealing technology of the auxiliary impeller and the non overload design technology of the pump to the submersible sewage pump, which greatly improves the sealing reliability and bearing capacity of the pump and extends the service life of the pump.

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