The foundation excavation in the construction of the city, and auxiliary buried underground pipes, underground water is the first problem to be solved, and the key to solve the problem is to use the pump can easily be extracted from the ground water and sludge, water submersible pumps are generally not able to complete the project, because the roadbed under water with many the sediment, it will lead to a stuck pump impeller pump motor burned, so it must be to complete the task of pumping using submersible sewage pump.
The popular sewage submersible pump in the use of urban construction to really brings a lot of convenience, but it also has some disadvantages, it is that it is not very long service life, the reason is because the garbage and sludge with different specifications of the stones, forming a plug or export pump body around the impeller the motor does not turn, the occurrence of the above soon pump can not be used.
To solve this problem we need to pump inhaled debris and long fiber after cutting emissions, then sand and water pollution to go out, it will not only prolong the service life of the water pump, which creates favorable conditions for speeding up construction of municipal engineering. There is also a stir type electric pump, its effect is slightly different from cutting. It is equipped with a stirring mechanism of attachment, when pumping to the bottom, because the underwater sediment or sediment concentration reaches a certain proportion and uneven, to make water not dry sand was sucked into the thick stuck, which first need to put them into uniform stirring and diluted to a thin sand, this play is not easy to damage the electric pump. In addition, in order to maintain the balance of the axial force of the main impeller, a pair of impeller structure must be set, which can reduce the pressure of the sealing chamber, so that the axial force of the electric pump and the service life of the mechanical seal are greatly improved. The heat pump is always the key problem of the service life of the pump power, if the cooling effect is not good, the temperature will rise inside the motor, the motor power continuous or large, easy to burn out the motor, shorten the service life of the pump.
In order to solve this problem, the outer loop cooling system can be used to enhance the heat dissipation function, which can ensure the normal operation of the electric pump when the surface is exposed to the water surface. For the discharge of the more serious corrosive liquid, the first use of the electric pump, its corrosion resistance, and the use of reliability will be greatly improved.
