Adaptive Primer Plate and Impeller for Centrifugal Pump
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Solution Overview
Problem
Centrifugal pumps face challenges in efficiently priming and adapting to different fluid types and flow rates due to the need for specific impeller designs and materials, which complicates their operation and maintenance.
Innovation Solution
A modular pump design featuring a removable primer plate with a discharge cutwater tongue and impeller, allowing for easy replacement and customization to match different hydraulic ratings and fluid properties, with a seal ring and mounting studs for secure alignment and sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the impeller and primer plate are fixed in design, then the pump structure is simple and reliable, but the pump cannot be easily adapted to different fluid types and flow rates
Solution Approach 1:
The pump is divided into modular components including a removable primer plate and interchangeable impellers. The primer plate can be detached and replaced, and different impellers can be mounted on the same shaft to accommodate various fluid types and flow rate requirements without redesigning the entire pump structure.
Solution Approach 2:
The pump shaft and mounting structure are designed to accommodate multiple types of impellers, allowing a single pump body to perform multiple functions. The universal mounting interface enables different impellers to be attached to the same shaft, providing versatility across different applications.
2Reliability
If custom impeller designs are created for each application, then the pump performance is optimized for specific fluids, but manufacturing and maintenance costs increase
Solution Approach 1:
The impeller is separated as a replaceable component from the pump body and shaft. This allows the impeller to be optimized for specific applications while keeping the expensive pump housing and motor reusable. When application requirements change, only the impeller needs to be replaced rather than manufacturing a completely new pump.
Solution Approach 2:
The design allows for the replacement of wear-prone or application-specific components like impellers and primer plates while recovering and reusing the main pump structure, shaft, and motor. This reduces manufacturing costs for different applications by reusing the expensive core components.
3Reliability
If the clearance between impeller and discharge volute is closely held, then priming operation is effective, but the pump cannot accommodate impeller trimming for different hydraulic ratings
Solution Approach 1:
The primer plate is designed as a removable component that can be detached and replaced. This allows the clearance between the impeller and discharge volute to be precisely controlled for effective priming operation, while still enabling impeller trimming or replacement for different hydraulic ratings by simply changing the impeller or primer plate configuration.
Solution Approach 2:
The pump configuration can be dynamically adjusted by replacing impellers or primer plates depending on the required hydraulic rating. The system transitions from a fixed clearance design to an adjustable configuration that maintains optimal priming clearance while accommodating different impeller sizes and trim levels.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient operation across various fluid types and flow rates by facilitating easy servicing and reconfiguration of pumps, reducing waste and operating costs through modular components.
Implementation Method 1
The rotational motion of the impeller generates a centrifugal force that increases the velocity of the fluid so that the fluid flows through the pump casing to an outlet
Implementation Method 2
The seal ring is configured to be placed along the inner ridge of the pump casing to seal the contact points between the primer plate and the pump casing
Data Source
AI summary
Technologies are generally described for pump devices that include an adaptive cutwater and impeller arrangement. The power end of the pump device can be coupled to a motor to drive an impeller. The primer plate and impeller of the pump device are removable from the pump casing such that the primer plate and impeller can be replaced or modified as desired for different applications. In some examples, the pump casing includes a primer plate that is removable from the pump casing, where the primer plate includes a discharge cutwater tongue that is specifically spaced and sized to service an impeller of a desired design. The discharge cutwater tongue and impellers in the pump device may thus be serviced for replacement parts, as well as to modify the pump device for different fluids of different fluids properties or hydraulic requirements as may be needed in different applications.