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Sewage pump has broad application prospects in the construction industry
Sewage pump has broad application prospects in the construction industry

Drain pumps used in buildings include submersible sewage pumps, submerged drain pumps, sewage drain pumps, and self-priming sewage pumps. Because the general site in the building is small and the displacement is not large, the submersible sewage pump and the submerged drainage pump can be preferentially used in the drainage pump. The submerged sewage pump is generally used in important places; the sewage pump and the self-priming sewage pump operate smoothly, without the advantages of vibration, energy saving and environmental protection are new products that I have discharged from the construction industry.

The flow rate of the sewage pump should be selected according to the design flow design load of the domestic sewage:
1.When lifting general wastewater, the submersible sewage pump outlet pipes of different water collection tanks can be combined and discharged according to actual conditions. When two or more pumps share a single outlet, valves and check valves should be installed on each pump outlet. When a single pump drain may cause backflow, a check valve shall be provided. It is not allowed to combine the pressure drainage with the gravity drain in the building. When the submersible sewage pump is lifted to contain large debris, the submersible sewage pump should be equipped with a crushing device.

2. When lifting sewage containing more fiber, it is advisable to use a large-channel submersible sewage pump. When the submersible sewage pump motor power is greater than or equal to 7.5kW or the outlet diameter is greater than or equal to DN100, the pump can be used to fix the auto transformer.
3. When there is displacement adjustment, it can be selected according to the maximum hourly flow rate of domestic drainage. The flow rate of the drainage pump in the fire elevator collecting pool is not less than 10L/s. The head of the drain pump is calculated according to the height of the lift and the loss of the pipeline, and then a certain free head is attached. The free head should be 0.02-0.03MPa. The flow rate of the suction pipe and the outlet pipe of the drain pump should not be less than 0.7m/s, and should not be greater than 2.0m/s. In the public building, a spare pump should be set up in each living drainage basin as a unit, and it should be operated interactively. Drainage in the basement, equipment room, and garage flushing floor. If there are two or more drainage pumps, the pump may not be used. When the collecting basin cannot provide an accident drain pipe, the pump should have an uninterrupted power supply.

4. When the drainage inlet pipe can be closed, there is no need for uninterrupted power supply, but an alarm device should be provided. When lifting sewage and wastewater with large impurities, the outlet pipes of submersible sewage pumps in different collection pools should not be combined and discharged.
5. 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 installed in a mobile installation. When the sewage collection basin is drained by the submersible sewage pump, a water pump fixed auto-coupling device shall be provided to facilitate the inspection of the water pump. The drain pump should be able to start and stop automatically and manually start and stop on site. Multiple pumps can be operated in parallel or in sections.