The drainage pumps used in the building include submersible sewage pump, subliquid drainage pump, vertical sewage pump and horizontal sewage pump. As the building site generally smaller, less displacement, priority use of submersible drainage pump sewage pump and liquid drainage pump, sewage pump generally used in important places in which liquid; vertical and horizontal sewage pump sewage pump set isolation based on self filling type absorbent, and occupied a certain space, it is less in construction use.
The discharge of the drainage pump should be selected according to the design of the second flow of the living drainage; when the drainage amount is adjusted, the flow rate can be selected according to the maximum hourly discharge of the living drainage. The flow rate of the drainage pump in the pool of fire elevator is not less than 10L/s.
The lift of the drainage pump is determined according to the height of the lifting and the calculation of the loss of the pipe, and a certain free head is added. The free head should be 0.02 ~ 0.03MPa. The flow rate of water suction pipe and outlet pipe should not be less than 0.7m/s, and it should not be greater than 2.0m/s. Health level self-priming pump
In public buildings, a spare pump should be set up in each water and drainage pool for the unit. Underground water, equipment room, garage to wash the ground drainage, if there are two or more than two pumps can not be used to pump equipment. When the gathering pool can not set up the accident drainage pipe, the pump shall have continuous power supply. When the drainage pipe can be closed, no interruptible power supply can be provided, but the alarm device shall be set.
When upgrading the dirty and waste water with larger impurities, the outlet pipe of the submersible sewage pump in different collecting tanks should not be combined and discharged. When upgrading the general wastewater, we can consider the actual situation of the submersible sewage pump outlet pipe of different pools.
When a water pump is shared by two or more pumps or more, valves and check valves should be installed on the outlet pipes of each pump. When a single pump drainage is likely to produce inverted irrigation, a check valve should be set. The pressure drainage is not allowed to be discharged from the gravity drainage pipe in the building.
When the submersible sewage pump is lifting large lump, the submersible sewage pump should have a smashing device. When lifting the sewage containing more fiber, the large channel submersible sewage pump should be used.
When the power of the submersible sewage pump is greater than or equal to 7.5kW or the outlet pipe diameter is greater than or equal to DN100, the pump can be fixed and self coupled device. When the power of the submersible sewage pump motor is less than 7.5kW or the outlet pipe diameter is less than DN100, a hose Mobile installation can be installed. When the sewage water pool is drained by the submersible sewage pump, a pump fixed auto coupling device should be set to facilitate the maintenance of the water pump.
The drainage pump should be able to start and stop automatically and the field manual start and stop. Many pumps can be operated alternatively in parallel, and can also be put into operation in segments.
- Close This Page
- Recommendation：
- Browse：
