Solve for the relationship between material viscosity and the flow rate, power consumption, and efficiency of screw pumps and rotor pumps
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Dear experts, please help determine the relationship between material viscosity and the flow rate of screw pumps and rotor pumps Is it true that at the same rotational speed, the higher the viscosity, the greater the flow rate? Is there an upper limit for viscosity? What is the relationship between the pump and viscosity?
Viscosity and flow rate are two different concepts. For the same bucket of liquid with a fixed volume, will its flow rate change depending on its viscosity? No, viscosity leads to an increase in the pump’s power consumption. When the viscosity is low, this factor can be ignored, but once it exceeds a certain level, its impact on power consumption increases, and power correction becomes necessary
Compared to rotary pumps and screw pumps, isn’t it the case that too low a viscosity can be problematic for these pumps? Do experts have any knowledge regarding the relationship between the performance of rotary pumps and screw pumps and the viscosity level? Is there an optimal viscosity level for rotary pumps and screw pumps? Please provide an answer
This question is quite general; there is no fixed ratio for it, and it needs to be determined based on specific usage. The choice of a suitable pump, its speed, and the setting of the clearance all need to be determined based on the specific conditions at the site; it’s not possible to apply fixed formulas in such cases. Pumps have different applications, and it’s not true that the higher the viscosity, the greater the flow rate. Gear pumps, rotor pumps, and screw pumps all belong to the category of positive displacement pumps, and the flow rate is directly related to the speed, but not to the viscosity. Each case must be analyzed individually; therefore, no meaningful conclusions can be drawn regarding this unspecified question