The positive displacement pumps known as progressing cavity pumps, which are also referred to as rotor-stator pumps, are capable of effectively transferring mediums with low to medium viscosity while maintaining a very high percentage of efficiency. Given that Mingjie Pump (www. mingjiepump. com) is one of the most prominent manufacturers and suppliers of progressing cavity pumps, we would like to take this opportunity to share some insights regarding the efficiency of progressing cavity pumps with you in this article. By forming a series of sealed cavities between the rotor and the stator, progressive cavity pumps are able to transport the medium from the suction port to the pressure port. This is accomplished through the progressive elliptical motion of the cavities. In terms of efficiency, progressing cavity pumps have a number of advantages that are not shared by other types of pumps, such as centrifugal pumps.
The high efficiency of progressing cavity pumps can be attributed to a number of influential factors, including the following:
The medium is transferred through progressive sealing cavities that are formed between the rotor and the stator in progressive cavity pumps. This allows the pumps to avoid turbulent flow and high shear stress, which are both characteristics of centrifugal pumps.
This sensitive handling has the potential to significantly cut down on friction and internal leaks, which ultimately results in increased efficiency. When compared to reciprocating pumps, progressing cavity pumps' mechanical friction loss is significantly lower than that of reciprocating pumps. This is because of the unique trochoid shape of the pump. When compared to screw pumps, the amount of contact that occurs between the rotor and the stator is lower. Having less friction results in increased efficiency. The fit between the rotor and the stator is very important for progressing cavity pumps because of the low slip rate for these pumps. Through the optimization of clearance and surface finish, it is possible to achieve a lower slip rate, which is defined as the difference between the theoretical flow rate and the actual flow rate. Increased pumping efficiency can be attributed to a low slip rate contributor.
Excellent volumetric efficiency: By minimizing both internal and external leakage, progressive cavity pumps are able to achieve volumetric efficiency levels as high as 95-98%. As a result of the progressive cavities' ability to provide dependable sealing and guarantee that the majority of the pumped volume is effectively delivered, the overall pumping efficiency is significantly increased.
Continuous operation and smooth starting:
Because progressive cavity pumps do not require a significant amount of starting torque, they are able to start and run without causing any sudden impact on the drive. Additionally, there is no pulsation and the movement of the rotor and stator is continuous. When it comes to hydraulic and mechanical efficiency, smooth running is directly correlated to high efficiency. When compared to reciprocating pumps, progressing cavity pumps are able to maintain a high level of efficiency across a wider range of flow rates without the need to adjust the pump size. Further optimization of efficiency can be achieved by adjusting the flow through the use of speed variation. Self-priming capability: Because of the progressive motion, progressive cavity pumps do not require the foot valve to be primed before they are started up. When applied in self-priming applications such as dewatering, there is no priming loss that occurs, which contributes to a higher overall efficiency. High viscosity pumping: Progressing cavity pumps are able to effectively handle medium with viscosity that is several times higher than what centrifugal pumps are able to handle. Because there is no turbulence produced during the pumping process, progressive cavity pumps continue to maintain an excellent level of efficiency even when dealing with extremely thick fluids.
Mingjie Pump (www. mingjiepump. com) is committed to conducting ongoing research and development in order to maximize the inherent benefits that are associated with further developing progressing cavity pump application. When it comes to producing rotor-stator sets, we use high precision machining to ensure that the clearances and surface finishes are optimized to reduce slippage as much as possible. Comprehensive hydraulic and mechanical tests are carried out in order to assess the volumetric efficiency, friction loss, and ensure that the product is of high performance. It is possible to use our progressing cavity pumps for applications in a wide variety of industries, including the chemical industry, the food processing industry, mining, and other industries that require high efficiency in the transfer of medium. In a nutshell, progressing cavity pumps possess a remarkable capability that enables them to handle a wide variety of media with high viscosity in a gentle, efficient, and dependable manner. It is possible to achieve a significant level of efficiency in comparison to other types of pumps by optimizing the design and manufacturing of the rotor-stator combination.
As a manufacturer, Mingjie Pump is committed to producing innovative cavity pumps that operate at an efficiency level that is at the forefront of the industry for the benefit of our customers. Our hope is that this article has provided some useful information regarding the advancement of cavity pump efficiency. In the event that you require any progressing cavity pumps or have any other inquiries, please do not hesitate to get in touch with us.