二、The working principle of liquid submerged slurry pump

• May 27, 2022
• A submersible slurry pump is a kind of centrifugal pump from the principle of physics. Conceptually, it refers to a machine that adds energy to solid and liquid mixed media through the effect of centrifugal force (the rotation of the pump's ...

These pumps are considered multi-level centrifugal pumps operating in the vertical position. Fluids that are augmented by impeller will drop off their kinetic energy in the diffuser and here the conversion of kinetic energy to pressure happens. This is the fundamental principle of both mixed flow and radial pumps. Whereas in the hydraulic submersible pumps, the motor is of hydraulic type other than the electric ones and in the case of closed-cycle the power liquid is kept isolated from the generated liquid. And in the open cycle, there will be a mixing of the generated fluid and the power fluid with that of surface isolation.

 

The shaft of the pump is connected either to the protector or gas separator through mechanical coupling at the pump bottom side. The liquid moves into the pump via the ingesting screen and is then elevated by the pump levels. The other components consist of bushings that are located all across the shaft length thus offering radial assistance to the shaft. In most cases, a thrust bearing handles a portion of the axial forces that arise in the pump, but these forces are maximumly captivated through the protector’s thrust bearing. There even exist various types of screw kind submersible pumps, where there will be a steel screw that operates as a functioning component. This screw permits the pump to operate water even in extreme impurity conditions.

 

How to extend the service life of the submersible slurry pump？

The working environment of the submersible slurry pump determines its service life. Let the centrifugal pump manufacturer teach you how to use coups to extend its service life.

 

 

To deal with this problem, the debris and long fibers sucked by the submersible slurry pump must be cut and discharged, and then the sand and water will be driven out together. This not only prolongs the service life of the submersible slurry pump but also speeds up municipal engineering. Construction speed creates the conditions. There is also a stir-type electric pump, which works slightly differently from cutting. It is equipped with a homogenizing tissue attachment. When the water is pumped to the bottom layer, because the underwater sediment or sediment has reached a certain concentration ratio and is not uniform, the thick sand will be sucked and stuck without draining the water. This is the first You need to mix them evenly and dilute them into thin sand so that it won't damage the electric pump easily.

 

In addition, in order to maintain the balance of the axial force of the main impeller, a sub-impeller structure must be provided, which can reduce the pressure in the seal cavity and greatly increase the axial force of the electric pump and the life of the mechanical seal. The heat dissipation of the electric pump has always been a key issue in the service life of the electric pump. If the heat dissipation is not good, the temperature in the motor will rise, which will continuously increase the power of the motor, easily burn out the motor, and shorten the life of the pump. In order to deal with this problem, we choose an external circulation cooling system to enhance the heat dissipation function, which can ensure that the electric pump can work normally when the water surface is exposed. Regarding the discharge of severe corrosive liquids, a stainless electric pump can be used first. Its corrosion resistance and operating reliability will be greatly improved.

 

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