How To Reasonably Select, Select And Use Slurry Pumps?

In recent years, in addition to long service life, high efficiency, energy saving, environmental protection, low cost and easy maintenance, slurry pump products have also put forward higher requirements for pump performance and reliability. 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 quality, but also to select, select and use correctly and reasonably.

Foreign slurry pump manufacturers attach great importance to the reasonable selection and use of slurry pumps. G. Daweideng has been engaged in the research of the influence of pump selection and material selection on the performance and use of slurry pumps. A lot of practice shows that: when transporting strong abrasive slurry, it is necessary to pay attention to the correct matching of the pump and its hydraulic system and the material selection to obtain the longest life of the pump's flow-through components. If the selection is improper, under a given working condition, when the flow deviates from the best efficiency point, it will cause the vortex in the pump to be generated, which will cause wear and shorten the life. This situation is most obvious when it deviates from 50% of the flow at the best 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 solidity of the slurry on the performance; appropriately select the correction coefficient; accurately calculate the system resistance and understand the slurry rheology The influence of characteristics on pump performance. Only in this way can we achieve reasonable model selection, reduce backflow, enable the pump to run efficiently, reduce energy consumption, and reduce wear.

The choice of wear-resistant materials for slurry pumps has an extremely important impact on the service life of the pump. Although no one kind of material can adapt to all different abrasive working conditions, as mentioned above, any kind of material is guilty of adaptable working conditions. At present, the series of wear-resistant materials have a wide range of qualities, and they are developing towards special-purpose types. Therefore, when selecting materials, the material that is most suitable for the working conditions should be selected according to the characteristics of the conveyed slurry and combined with the accumulated operating experience in the past, so as to improve the service life of the pump.

In short, the reasonable selection, material selection and use of slurry pumps are essential prerequisites for giving full play to the pump's own functions, economical operation, reducing energy consumption and increasing service life. According to experience, to solve this problem, you should pay attention to the following aspects:

1. Analyze and study the characteristics of the pumping slurry and related parameters of the system.

2. Correctly select the structure and caliber of the pump.

3. Determine the performance parameters of the pump.

4. Reasonably choose the material of the wetted parts

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

6. The problem of the series connection of the pump