Sewage pumps have received more and more attention from the people, from the original pure water used to transport the various domestic sewage, industrial wastewater, construction site drainage, liquid feed and so on. It plays a very important role in various industries such as municipal engineering, industry, hospitals, architecture, restaurants, and water conservancy construction. However, the most critical issue for the sewage pump is the reliability problem, because the sewage pump is used under the liquid; the medium is a mixed liquid containing some solid materials; the pump is close to the motor; the pump is vertical In the arrangement, the weight of the rotating part is in the same direction as the impeller is subjected to the water pressure. These problems all make the requirements of the sewage pump in terms of sealing, motor bearing capacity, bearing arrangement and selection higher than the general sewage pump.
In order to improve the life of the sewage pump, most domestic and foreign manufacturers are trying to find a solution on the pump protection system, that is, when the pump leaks, overloads, over-temperature and other faults can be automatically alarmed and automatically shut down for repair. It is necessary to set up a protection system in the sewage pump, which can effectively protect the safe operation of the electric pump. But this is not the crux of the problem. The protection system is only a remedy after the pump failure. It is a passive method. The key to the problem should be to start from the root and completely solve the problem of the pump in terms of sealing, overload, etc. This is a more proactive approach. For this purpose, the secondary impeller hydrodynamic sealing technology and the pump's no-overload design technology are applied to the submersible sewage pump, which greatly improves the pump sealing reliability and bearing capacity, and prolongs the service life of the pump.
When the drainage pump sump cannot have an accident drain, the pump should have an uninterrupted power supply; when the drainage inlet can be closed, no uninterrupted power supply may be provided, but an alarm device should be provided. When lifting dirt and waste water with large impurities, the submerged sewage pump outlet pipes in different collection tanks should not be combined and discharged. When the general wastewater is raised, the submerged sewage pump outlet pipes of different collection tanks can be combined and discharged according to actual conditions. When two or more pumps share a single outlet pipe, valves and check valves shall be installed on the outlet pipe of each pump. When a single pump drain may produce backflow, a check valve should be provided. Pressure drainage is not allowed to be combined with gravity drainage pipes in buildings.
When the submersible sewage pump contains large debris, the submersible sewage pump should be equipped with a smashing device; when lifting sewage containing more fiber material, a large-channel submersible sewage pump should be used. When the motor power is greater than or equal to 7.5kW or the outlet pipe diameter is greater than or equal to DN100, the pump can be used to fix the auto-coupling device; 8. When the submersible sewage pump motor power is less than 7.5kW or the outlet pipe diameter is less than DN100, the hose can be set Mobile installation. Sewage collection tanks using submersible sewage pump drainage, the pump should be set up with a fixed auto-coupling device to facilitate the maintenance of the pump. The drainage pump should be able to start and stop automatically and start and stop manually on site. Multiple pumps can be operated in parallel and in parallel, and they can also be put into operation in stages.
In order to improve the life of the sewage pump, most domestic and foreign manufacturers are trying to find a solution on the pump protection system, that is, when the pump leaks, overloads, over-temperature and other faults can be automatically alarmed and automatically shut down for repair. It is necessary to set up a protection system in the sewage pump, which can effectively protect the safe operation of the electric pump. But this is not the crux of the problem. The protection system is only a remedy after the pump failure. It is a passive method. The key to the problem should be to start from the root and completely solve the problem of the pump in terms of sealing, overload, etc. This is a more proactive approach. For this purpose, the secondary impeller hydrodynamic sealing technology and the pump's no-overload design technology are applied to the submersible sewage pump, which greatly improves the pump sealing reliability and bearing capacity, and prolongs the service life of the pump.
When the drainage pump sump cannot have an accident drain, the pump should have an uninterrupted power supply; when the drainage inlet can be closed, no uninterrupted power supply may be provided, but an alarm device should be provided. When lifting dirt and waste water with large impurities, the submerged sewage pump outlet pipes in different collection tanks should not be combined and discharged. When the general wastewater is raised, the submerged sewage pump outlet pipes of different collection tanks can be combined and discharged according to actual conditions. When two or more pumps share a single outlet pipe, valves and check valves shall be installed on the outlet pipe of each pump. When a single pump drain may produce backflow, a check valve should be provided. Pressure drainage is not allowed to be combined with gravity drainage pipes in buildings.
When the submersible sewage pump contains large debris, the submersible sewage pump should be equipped with a smashing device; when lifting sewage containing more fiber material, a large-channel submersible sewage pump should be used. When the motor power is greater than or equal to 7.5kW or the outlet pipe diameter is greater than or equal to DN100, the pump can be used to fix the auto-coupling device; 8. When the submersible sewage pump motor power is less than 7.5kW or the outlet pipe diameter is less than DN100, the hose can be set Mobile installation. Sewage collection tanks using submersible sewage pump drainage, the pump should be set up with a fixed auto-coupling device to facilitate the maintenance of the pump. The drainage pump should be able to start and stop automatically and start and stop manually on site. Multiple pumps can be operated in parallel and in parallel, and they can also be put into operation in stages.
This category of ignition gun belongs to open fire ignition gun, which can be used in household kitchen and outdoor barbecue. It is light in weight and easy to carry. It can be ignited for 3000 times and has a long service life. The ignition gun of open fire uses butane gas, which can be re inflated after being used up. Energy saving and environmental protection. And it is equipped with a safety lock, which has higher safety.
Instead of the commonly used lighter, it can be ignited in a long distance. greatly strengthen the safety, more convenient to use. .
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