Selection characteristics and requirements of submersible sewage pump

When selecting the sewage discharge equipment in the building, due to the different structure and size of the building site and the different displacement, the drainage equipment selected is also different. Generally, the submersible sewage pump of China Sewage Pump Factory is selected in the building , Submersible sewage pumps, vertical sewage pumps and horizontal sewage pumps, etc. Sewage pumps can be divided into submersible sewage pumps and submersible sewage pumps. Among them, submersible sewage pumps are generally used in important places; vertical sewage pumps and horizontal sewage pumps need to be equipped with isolation foundations, self-filling and water absorption, and occupy a certain position, so they are very important in buildings. Use less.

The flow rate of the submersible sewage pump is selected according to the second flow rate of domestic drainage; when there is drainage regulation, it can be selected according to the hourly flow rate of domestic drainage. The discharge pump flow rate in the fire lift sump shall not be less than 10L/s.

The head of the drainage pump is determined according to the calculation of the lifting height and the loss of the pipeline, and then a certain head is added. The water head is 0.02~0.03mpa. The flow velocity of the suction pipe and outlet pipe of the drainage pump shall not be less than 0.7m/s and not greater than 2.0m/s.

There is one pump for equipment in public buildings, and each domestic drainage pool is a unit, which should be mutually operated at ordinary times. For the drainage of the basement, equipment room and flushing the ground, if there are two or more drainage pumps, the equipment pump may not be used. When the emergency drainage pipe cannot be installed in the sump, the water pump should provide uninterrupted power supply; when the drainage and water inlet pipes can be closed, an uninterruptible power supply can be installed, but an alarm device should be installed.

When lifting sewage and wastewater containing a large amount of impurities, the outlet pipes of submersible sewage pumps in different sumps must not be discharged together; when lifting general wastewater, the outlet pipes of submersible sewage pumps in different sumps can be combined and discharged according to the actual situation.

When two or more pumps share one outlet pipe, valves and check valves should be installed on the outlet pipe of each pump. When backflow may occur in the drainage of a single pump, a check valve should be installed. Pressure drains in buildings must not discharge at the same time as gravity drains.

When the submersible sewage pump contains large debris, the submersible sewage pump should be equipped with a crushing device; when lifting sewage with more fibers, a large channel cutting sewage pump should be used.

China Solar Water Pump Manufacturers When the motor power of submersible sewage pump is greater than or equal to 7.5kW or the outlet diameter is greater than or equal to DN100, a fixed pump auto-coupling device can be used; when the motor power of submersible sewage pump is less than 7.5kW or the outlet diameter is less than DN100, it can be set Hose mobile installation. When the sewage pool is drained by the submersible sewage pump, a fixed pump self-coupling device should be installed to facilitate the maintenance of the pump.

The dewatering pump shall be able to be started and stopped automatically and manually on site. Multiple water pumps can be operated in parallel alternately or put into operation in sections.