Submersible sewage pump is a pump product developed based on the characteristics of water pumps. It can tear and cut long fibers, bags, belts, grass, cloth strips and other substances in sewage, and then discharge them smoothly. It is particularly suitable for transporting liquids containing hard solids, fiber materials, as well as particularly dirty, sticky and slippery liquids.
The submersible sewage pump adopts a single or double channel impeller structure and a new mechanical seal, which can effectively transport solid materials and long fibers. Compared with traditional impellers, the impeller of this pump adopts a single channel or double channel form, which is similar to a curved pipe with the same cross-sectional size and has very good flow characteristics. Coupled with a reasonable volute chamber, the pump has high efficiency and the impeller has undergone dynamic and static balance tests, making the pump operate without vibration.
Submersible sewage pump is a type of pump product that is connected to a motor and works underwater at the same time. Compared with general horizontal or vertical sewage pumps, submersible sewage pumps have the following advantages:
1. Compact structure and small footprint. Submersible sewage pumps can be directly installed in sewage tanks due to their underwater operation, without the need to build specialized pump rooms for installing pumps and machines, which can save a lot of land and infrastructure costs.
2. Easy installation and maintenance. Small submersible sewage pumps can be freely installed, while large submersible sewage pumps are generally equipped with automatic coupling devices for automatic installation, making installation and maintenance quite convenient.
3. Long continuous operation time. Submersible sewage pumps have a shorter shaft and lighter weight of rotating components due to the coaxial design of the pump and motor. Therefore, the radial load on the bearings is relatively smaller, and the service life is much longer than that of ordinary pumps.
4. There are no issues such as cavitation damage or water injection. Especially the latter point has brought great convenience to the operators.
5. Low vibration noise, low motor temperature rise, and no pollution to the environment.
In order to improve the service life of submersible sewage pumps, most manufacturers at home and abroad are now working on pump protection systems, which can automatically alarm and shut down for maintenance in case of pump leakage, overload, overheating and other faults. But we believe that it is necessary to install a protection system in submersible sewage pumps, which can effectively protect the safe operation of the electric pump. But this is not the key issue, the protection system is just a remedial measure after a pump failure, which is a relatively passive approach.
The key to the problem should be to start from the root and strive to completely solve the problems of pump sealing, overload, etc. This is a more proactive approach. To this end, we have applied the hydrodynamic sealing technology of the secondary impeller and the overload free design technology of the submersible sewage pump to the submersible sewage pump, greatly improving the reliability and load-bearing capacity of the pump seal and extending the service life of the pump.
