Coupling Sleeve Valve for High Flow Hydraulic Lines
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Solution Overview
Problem
Existing quick couplings for high-pressure hydraulic lines are costly to produce and not suitable for high flow rates, limiting their efficiency and applicability.
Innovation Solution
A coupling sleeve design with a two-piece bearing sleeve and optimized valve seat geometry, including conical transition surfaces and a trapezoidal cross-sectional enlargement, which minimizes turbulence and allows for high flow rates without increasing external dimensions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional quick coupling designs are used, then the structure is simple and easy to manufacture, but the flow rate is limited and not suitable for high flow rates
Solution Approach 1:
The bearing sleeve is divided into two separate pieces: an outer bearing sleeve and an inner bearing sleeve. This segmentation allows for optimized flow channel geometry and reduced turbulence without requiring a complete redesign of the entire coupling structure, thereby enabling high flow rates while maintaining reasonable structural complexity
Solution Approach 2:
The flow channel cross-section is enlarged in the radial dimension by utilizing the space between the outer and inner bearing sleeves. This dimensional expansion increases the flow area and reduces flow resistance, allowing high flow rates to be achieved without significantly increasing the axial length of the coupling
2Productivity
If the flow channel cross-section is enlarged to increase flow rate, then the flow rate increases, but the external dimensions of the coupling increase
Solution Approach 1:
The inner bearing sleeve is nested within the outer bearing sleeve, creating a concentric arrangement. This nesting strategy allows the flow channel cross-section to be enlarged by utilizing the annular space between the two sleeves, thereby increasing flow rate without significantly increasing the external dimensions of the coupling
3Productivity
If conventional valve seat geometry is used, then the manufacturing is simpler, but turbulence occurs and flow rate is limited
Solution Approach 1:
The valve seat geometry is optimized with specific conical transition surfaces and rounded edges at critical locations where flow transitions occur. This localized geometric optimization reduces turbulence and improves flow characteristics without requiring complex manufacturing processes throughout the entire valve seat structure
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 flow rates of at least 240 L/min while maintaining compact dimensions, reducing turbulence and ensuring secure locking of the closing valve, thus enhancing the coupling's efficiency and suitability for high-pressure hydraulic applications.
Implementation Method 1
which minimizes turbulence and allows for high flow rates
Implementation Method 2
Each clutch part also has a clutch housing within which a spring-loaded valve is arranged
Data Source
Figure 1
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Figure 3
AI summary
The present invention relates to a coupling part (1), in particular a coupling sleeve (2), for a quick coupling for high-pressure hydraulic lines, comprising a coupling housing (3) with a flow channel (5) and a valve assembly (51) arranged within the flow channel (5) with a plunger-like closing valve (50) for closing the flow channel (5) in the uncoupled state of the coupling part (1), wherein the coupling housing (3) has a conical valve seat surface, and the closing valve (50) has a valve longitudinal axis (73) and a valve head with a conical surface and a valve sealing ring (76) for sealing contact with the valve seat surface, wherein the valve sealing ring (76) has a circular cylindrical annular circumferential surface projecting radially beyond the conical surface, which has a valve sealing diameter DVD.wherein the flow channel (5) has an annular cross-sectional expansion (49) with a maximum expansion diameter DEW, wherein the cross-sectional expansion (49) is radially opposite the annular circumferential surface (93a) in the maximum open position of the closing valve (50) with respect to the longitudinal axis (73) of the valve, and a quick coupling with such a coupling part (1).