The stainless steel sewage pump used in the building is that the general venue in the building is small and the displacement is not large. The drainage pump can be preferred to use the WQ series pump and the under -yw liquid under the series. Pumps and horizontal sewage pumps require setting foundation, self -irrigation water absorption, and occupying certain venues, so they are less used in the building.

The flow of the pump should be selected according to the daily drainage design of the living drainage; when there is a drainage volume, the maximum flow of the daily drainage can be selected. The flow of drainage pumps in the fire elevator pump is not less than 10L/s.

The ravage of the pump is increased at the height,

After the pipeline loss calculation is determined, a certain free water head is added. The free water head should be 0.02 ～ ～ 0.03MPa. The flow rate of pump water absorption pipes and water outlet pipes should not be less than 0.7m/s, and should not be greater than 2.0m/s.

Public buildings should set a spare pump in each living drainage pool for units, which should be operated on the same way. The watering of the basement, equipment room, and garage rinse the ground. If there are two or two or more drainage pumps, there is no equipment pump.

When a collection of accidents cannot be set up, the pump should have uninterrupted power supply; when the drainage pipe can be turned off, there may be no constant power supply, but alarm device should be set up.

When promoting pollution and wastewater with large impurities, the water pump out of the diving sewage pump in different ponds should not be merged and discharged; when the general wastewater is promoted, the submersible sewage pump out of the water pump of different ponds can be considered according to the actual situation. Essence

When two or more water pumps are shared with a water pipe, a valve and a stop valve should be installed on each water pump out of the water pipe. When a single water pump drainage may cause inverted irrigation, the return valve should be set. The pressure drainage control is not allowed to merge and discharge the gravity drainage pipe in the building.

When enhanced large pieces of debris, the pump should have a crushed device; when it is enhanced, a large channel diving pump should be adopted when it contains more fiber sewage.

When the power of the pump motor is greater than equal to 7.5kW or the diameter of the outlet pipe is greater than equal to DN100, the water pump fixed auto -coupled device can be used; when the power pump motor power is less than 7.5kW or the diameter of the outlet pipe is less than DN100, a hose movement can be installed installed. Essence When the sewage tank is drained with a submersible sewage pump, it should