Buy technology used in building 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 requirements set isolation based on self filling type absorbent, and occupy a certain space, it is less used in construction.
The flow of the water 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. 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.
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