Magnetic Pump Suction Port Shaft Support Turbulence Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional magnetic pumps suffer from reduced suction characteristics and pump efficiency due to a small cross-sectional area of the suction port, leading to turbulence.
Innovation Solution
The magnetic pump design includes a cylindrical suction port with a shaft supporting body positioned further towards the inlet side than the connecting section between the inner wall and supporting legs, and curved portions that smoothly connect the supporting legs to the shaft supporting body, allowing for a longer flow straightening distance and reduced turbulence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a plurality of supporting legs is provided to support the shaft supporting body, then the shaft supporting body can be supported in the suction port, but the cross section of the suction port becomes small and turbulence is generated
Solution Approach 1:
The patent applies curved portions at the connecting sections between the supporting legs and the shaft supporting body, replacing sharp corners with smooth curves. This curvature modification allows fluid flow to follow a smoother path around the supporting structure, reducing flow separation and turbulence while maintaining the structural support function of the legs
2Object-generated harmful factors
If the leading end of the shaft supporting body is positioned closer to the inlet side, then the flow straightening distance is increased and turbulence is reduced, but the supporting legs must extend further
Solution Approach 1:
The shaft supporting body is positioned in advance (further toward the inlet side) before the fluid reaches the impeller. This preliminary positioning creates a longer flow straightening distance upstream, allowing the flow to stabilize and straighten out before entering the impeller, thereby reducing turbulence and improving suction characteristics
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
This design improves suction characteristics and pump efficiency by reducing turbulence and enhancing fluid flow, as evident from the improved NPSHr values and pump efficiency graphs compared to conventional designs.
Implementation Method 1
a rotary driving means that is magnetically coupled to the magnet via the rear casing and gives rotary driving force to the magnet
Data Source
AI summary
A magnetic pump includes a front casing including: a shaft supporting body that supports a leading end of a supporting shaft; and a plurality of supporting legs that extends toward an inner wall of a suction port from the shaft supporting body, and that supports the shaft supporting body in the suction port. In the magnetic pump, a leading end of the shaft supporting body is positioned further toward the inlet side of the suction port than a connecting section between the inner wall of the suction port and the supporting leg.