Sewage pump is a kind of pump and motor connected, and at the same time submerged into the liquid pump work.
Sewage pump selection 1, when there is a displacement adjustment, can be selected according to the maximum daily flow of water discharge. The flow rate of the drainage pump in the fire elevator collection basin shall not be less than 10L/s. The head of the drainage pump is determined according to the lifting height and the pipe loss calculation, and then a certain free head is attached. Free head should use 0.02-0.03MPa. Drain pump suction pipe and outlet pipe flow rate 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 installed in each unit of the living drainage collection basin, which should be operated in an interactive manner. The drainage in the basement, equipment room and garage flushing floor may not be used for equipment pumps if there are two or more drainage pumps.
2. When the catchment tank cannot have an accident drain, the pump should have uninterrupted power supply;
3. When the drainage inlet pipe can be closed, no uninterrupted power supply may be provided, but an alarm device shall be provided.
4. When lifting sewage and wastewater with large impurities, the submerged sewage pump outlet pipes in different collection tanks should not be combined and discharged.
5. When general wastewater is raised, the submerged sewage pump outlet pipes of different collection tanks may 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.
6, when the submersible sewage pump contains large debris, the submersible sewage pump should be equipped with a smashing device; when the lifting of more sewage containing more fiber, it should adopt a large channel submersible sewage pump.
7. 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, can be installed hose 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.
Sewage pump types:
1. Large-diameter non-clogging submerged sewage pump 2. Automatic cutting cloth with knife, automatic mixing of weeds and submersible sewage pump 3. Self-priming sewage pump installed on the water side of the pump 4. Submersible sewage pump - Pump body Into the raw materials, 5,. Corrosion and wear resistance of a good mortar pump is also a sewage pump
Sewage pump selection 1, when there is a displacement adjustment, can be selected according to the maximum daily flow of water discharge. The flow rate of the drainage pump in the fire elevator collection basin shall not be less than 10L/s. The head of the drainage pump is determined according to the lifting height and the pipe loss calculation, and then a certain free head is attached. Free head should use 0.02-0.03MPa. Drain pump suction pipe and outlet pipe flow rate 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 installed in each unit of the living drainage collection basin, which should be operated in an interactive manner. The drainage in the basement, equipment room and garage flushing floor may not be used for equipment pumps if there are two or more drainage pumps.
2. When the catchment tank cannot have an accident drain, the pump should have uninterrupted power supply;
3. When the drainage inlet pipe can be closed, no uninterrupted power supply may be provided, but an alarm device shall be provided.
4. When lifting sewage and wastewater with large impurities, the submerged sewage pump outlet pipes in different collection tanks should not be combined and discharged.
5. When general wastewater is raised, the submerged sewage pump outlet pipes of different collection tanks may 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.
6, when the submersible sewage pump contains large debris, the submersible sewage pump should be equipped with a smashing device; when the lifting of more sewage containing more fiber, it should adopt a large channel submersible sewage pump.
7. 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, can be installed hose 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.
Sewage pump types:
1. Large-diameter non-clogging submerged sewage pump 2. Automatic cutting cloth with knife, automatic mixing of weeds and submersible sewage pump 3. Self-priming sewage pump installed on the water side of the pump 4. Submersible sewage pump - Pump body Into the raw materials, 5,. Corrosion and wear resistance of a good mortar pump is also a sewage pump
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