fuyangby@126.com
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fuyangby@126.com
86 15188770013
Design points
Auxiliary sealing function
Preventing slurry leakage: The centrifugal force generated by the rotation of the secondary impeller throws the slurry outward, forming a barrier to prevent the slurry from leaking in the direction of the pump shaft.
Protective sealing device: The secondary impeller reduces the direct impact of slurry on mechanical seals or packing seals, extending the service life of the seals.
Reduce sealing pressure: The secondary impeller can balance the pressure inside the pump, reduce the working pressure of the sealing device, and minimize the risk of leakage.
Reduce axial force
Balanced axial force: The design of the secondary impeller can offset some of the axial force generated by the main impeller, reduce the load on the bearing, and extend the service life of the bearing.
Improving operational stability: By reducing axial force, the secondary impeller helps to reduce pump vibration and noise, thereby enhancing pump operational stability.
Improve the efficiency of the pump
Reduce energy loss: The design of the secondary impeller can optimize the flow field inside the pump, reduce energy loss, and improve the overall efficiency of the pump.
Extend the service life of the pump: By reducing leakage and axial force, the secondary impeller helps to extend the service life of the pump and reduce maintenance costs.
Adapt to complex working conditions
High concentration slurry: Under high concentration and high wear conditions, the secondary impeller can effectively prevent slurry leakage, protect the pump shaft and sealing device.
Corrosive media: When transporting corrosive media, the secondary impeller can reduce the corrosion of the media on the pump shaft and seals, extending the service life of the pump.
Application effect
sealing effect
The secondary impeller seal relies on fluid dynamic action for sealing and belongs to non-contact sealing. Air or clean water generates pressure under the rotation of the secondary impeller, and forms an air or water slurry equilibrium with the slurry on the outer edge of the secondary impeller, thereby resisting the leakage of liquid at the outlet of the main impeller.
Reduce axial force
In a mud pump, axial force is mainly composed of the pressure difference force exerted by the liquid on the impeller and the gravity of the entire rotating part. After installing the secondary impeller, the direction of the pressure difference force exerted by the liquid on the secondary impeller is opposite to the combined force of the two forces mentioned above, which can offset some of the axial force and prolong the bearing life.
energy consumption
There is a disadvantage to using a secondary impeller sealing system, which is that a portion of energy is consumed on the secondary impeller, usually around 3%. However, as long as the design is reasonable, this loss can be minimized to the lowest extent possible.
Adapt to different working conditions
The design and working principle of the secondary impeller of the slurry pump involve knowledge from multiple disciplines such as fluid mechanics, materials science, and mechanical design. Therefore, studying the secondary impeller of slurry pumps not only helps to improve the overall performance of the pump, but also promotes the development of related disciplines and technologies.
conclusion
In summary, the design of the secondary impeller of the slurry pump focuses on auxiliary sealing, reducing axial force, improving pump efficiency, and adapting to complex working conditions. Its application effects are significant, including effective sealing, reducing axial force, optimizing energy consumption, and adapting to various working conditions. These characteristics make the secondary impeller of the slurry pump a key component in the design of slurry pumps, which plays an important role in improving pump performance, extending service life, and reducing maintenance costs.
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(Editor in charge: Slurry Pump https://www.fuyangpumps.com/)
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