As a Slurry Pumps Suppliers, share with you. The reasonable selection of slurry pump is one of the key factors to improve the service life of the pump. The reasonable selection of slurry pump includes several main aspects such as reasonable selection of pump type, performance parameters, flow-through parts materials, sealing type and transmission mode.
1. The choice of pump type There are many types of centrifugal slurry pumps. Different types of pumps should be selected according to the nature of the slurry. Take Warman pumps as an example. L-type pumps can be used for low-abrasive slurry with a weight concentration of less than 30%. ; AH type pump can be used for high concentration and strong abrasive slurry pump.
2. Selection of performance parameters After the pump type is determined, the head and flow are the basis for selecting pump specifications and whether it is connected in series. For conveying high-concentration and strong abrasive slurry, the pump's maximum number of revolutions nmax (the highest number of revolutions in the performance curve) is generally not used, and it is more appropriate to choose a number of revolutions of about 3/4nmax. When the selected pump is at 3/4 nmax, the flow rate is appropriate but the head cannot be reached, and multiple pumps in series can be used. For Warman pumps, the flow range of different slurries should also be limited; for high-concentration and strong abrasive slurries, the flow should be selected within the range of 40-80% of the flow rate corresponding to the highest efficiency of the pump; for low-concentration abrasive slurries, The flow rate should be selected within the range of 40%-100% of the flow rate corresponding to the highest efficiency of the pump. Generally, it is not selected in the range of 100%—120% of the flow rate corresponding to the highest efficiency.
3. The selected slurry pump must ensure good operation stability and safe and reliable operation. Therefore, the selected pump should choose the performance corresponding to a short section of the curve after a certain point on the flow and head curve. If the change in flow is large but the change in head or pressure is small, the steep drop performance curve should be selected; if the change in head or head is required to be large but the flow change is small, then the steep drop performance curve should be selected. The pump has better anti-cavitation performance.
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