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Sewage pump maintenance
Sewage pump has been more and more people's attention, from the original purely for the transport of fresh water to the delivery of a variety of domestic sewage, industrial wastewater, construction site drainage, liquid feed and so on. In municipal engineering, industry, hospitals, buildings, restaurants, water conservancy construction plays a very important role in all walks of life. However, the most critical problem for the sewage pump is reliability, because the use of the sewage pump is under liquid; the medium is a mixture of some solid materials; the pump is very close to the motor; the pump is vertical Arrangement, rotating parts and impeller water pressure in the same direction. These problems make the sewage pump in sealing, motor carrying capacity, bearing arrangement and selection requirements than the average sewage pump is higher. In order to improve the life of the sewage pump, most domestic and foreign manufacturers are in the pump protection system think of a way, that is, the pump leaks, overload, over temperature and other failures can automatically alarm and automatically shut down for repair. In the sewage pump protection system is necessary, it can effectively protect the safe operation of the pump. However, this is not the crux of the problem. The protection system is only a remedy after a pump failure. It is a relatively passive approach. The crux of the problem should be from the very beginning, to completely solve the pump in the sealing, overload and other issues, this is a more proactive approach. To this end the impeller hydrodynamic sealing technology and pump no overload design technology used in submersible sewage pump to greatly improve the pump seal reliability and carrying capacity and prolong the service life of the pump. Sewage pump pool can not set the accident drain, the pump should have uninterrupted power supply; when you can close the drainage pipe, it may not provide uninterrupted power supply, but should set the alarm device. When upgrading the sewage and waste water with larger impurities, the submersible sewage pump outlet pipes in different sumps should not be combined and discharged. When to enhance the general wastewater, according to the actual situation of different submersible sewage pump outlet pipe merged discharge. When two or more pumps share one outlet pipe, a valve and a check valve shall be installed on each outlet pipe of the pump. A single pump drainage may occur when the backflow should be set check valve. Do not allow the pressure drain and the building gravity drainage pipe merged discharge. When the submersible sewage pump to enhance large debris, the submersible sewage pump should be equipped with a comminution device; when upgrading with more fibrous waste water, should adopt a large submersible sewage pump. When the motor power is greater than or equal to 7.5kW or outlet diameter is greater than or equal to DN100, the pump can be used to fix the coupling device; 8, when the submersible sewage pump motor power is less than 7.5kW or outlet diameter less than DN100, Mobile installation. Sewage collection pond submersible sewage pump drainage, water pumps should be set fixed auto-coupling device to facilitate pump maintenance. Drainage pump should be able to automatically start and stop and on-site manual start and stop. Multiple pumps can be alternately operated in parallel, but also can be put into operation in stages.