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Reasonable selection, material selection and Operation of Slurry Pump

In recent years, in addition to the requirements of long life, high efficiency, energy saving and environmental protection, low cost and easy maintenance, the slurry pump products also put forward higher requirements for the performance and extractability of the pump. 

In order to meet these requirements, it is necessary not only to have excellent hydraulic design and structural design, suitable anti-wear materials and high-level manufacturing and inspection quality, but also to correctly and reasonably select models, materials and use.

Foreign slurry pump manufacturers attach great importance to the rational selection and use of slurry pumps. 

G, Daviden, director of the development department of Worthington Canada Pump Company, has been engaged in research on the influence of pump selection and material selection on the performance and use of slurry pumps. Correct matching of the hydraulic system and obtaining the pump flow are the material selection for the longest life. 

If the type is improperly selected, under the given working conditions, when the flow rate deviates from the optimal efficiency point, it will cause the accidental flow in the pump, which will cause wear and shorten the service life. This is most pronounced at 50% of the flow away from the optimum efficiency point. 

Therefore, when selecting the type, according to the requirements of the system, the slurry flow point should not be selected too large, pay attention to the influence of the relative performance of the solid in the slurry, select the correction factor appropriately, accurately calculate the system resistance and clarify the slurry rheology The effect of characteristics on pump performance.

 Only in this way can we achieve reasonable selection, reduce backflow, enable the pump to operate efficiently, reduce energy consumption, and reduce wear and tear. The choice of wear-resistant materials has an extremely important influence on the service life of the pump. Although there is no single material that can accommodate all the different abrasive conditions, as mentioned above, any material has the most suitable conditions. At present, the series of wear-resistant materials are relatively wide, and they are developing towards special-purpose types.

 Therefore, when selecting materials, the most suitable material for working conditions should be selected according to the characteristics of the conveyed slurry and the accumulated operating experience in the past, so as to improve the service life of the pump. 

In a word, the reasonable selection, material selection and use of the slurry pump are the crucial prerequisites for giving full play to the function of the pump itself, economical operation, reducing energy consumption and improving lifespan.

According to experience, to solve this problem, we should pay attention to the following aspects:

(1) Analyze and study the characteristics of the pumped slurry and related parameters of the system.

(2) Correctly select the structural form and caliber of the pump.

(3) Determine the performance parameters of the pump.

(4) Reasonably select the material of the overcurrent parts.

(5) Select the transmission mode and shaft seal form of the pump.

(6) The series connection of the pump.