Gate Valve Cam Mechanism Perpendicular Screw Fixation
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Solution Overview
Problem
The existing gate valve design requires inclined screw attachment holes, making it difficult to achieve positional accuracy during attachment to a chamber wall, necessitating expensive and complex multifunction processing machines and resulting in poor processability.
Innovation Solution
A gate valve design that uses a cam mechanism with perpendicular screw attachment, allowing the valve plate housing frame to be fixed to chamber walls with perpendicular surfaces, eliminating the need for inclined holes and improving attachment precision and simplicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If inclined screw attachment holes are used to fix the valve plate housing frame to chamber walls, then the frame can be attached to perpendicular surfaces, but positional accuracy deteriorates and processing complexity increases
Solution Approach 1:
Instead of creating inclined holes in perpendicular surfaces (complex approach), the invention inverts the approach by creating perpendicular holes and using a cam mechanism to achieve the inclined attachment effect. The cam mechanism converts the perpendicular screw insertion into a thrust force that presses the frame walls against the chamber walls at the required angles, thereby achieving accurate positioning without complex inclined hole processing.
Solution Approach 2:
The cam mechanism acts as an intermediary between the perpendicular screw attachment and the perpendicular surface contact. It transforms the simple perpendicular screw insertion into a mechanism that generates thrust force to press the frame walls against the chamber walls, thereby achieving the desired attachment without directly creating complex inclined geometry.
2Adaptability or versatility
If inclined screw attachment holes are used, then perpendicular surfaces can be connected, but processing complexity and equipment requirements increase
Solution Approach 1:
The invention inverts the conventional approach by using perpendicular holes instead of inclined holes. The cam mechanism then provides the functional equivalent of inclined attachment through thrust force generation, thereby achieving the same connection capability with simpler, more standard processing equipment.
Solution Approach 2:
The invention changes the geometric parameters of the attachment system by using perpendicular holes instead of inclined holes. The cam mechanism compensates for this parameter change by generating the necessary thrust force to achieve the required attachment geometry, thereby simplifying the processing requirements while maintaining connection capability.
3Manufacturing precision
If perpendicular screw holes are used instead of inclined holes, then processing simplicity improves, but the ability to press frame walls against chamber walls deteriorates
Solution Approach 1:
The cam mechanism serves as an intermediary that converts the simple perpendicular screw insertion into a force-generating mechanism. It transforms the linear screw motion into a thrust force that presses the frame walls against the chamber walls, thereby maintaining the force requirement while using simpler perpendicular hole geometry.
Solution Approach 2:
The invention changes the force transmission parameter by introducing the cam mechanism. Instead of relying on the screw axis to directly provide the pressing force at an angle, the cam mechanism converts the perpendicular screw motion into the necessary thrust force, thereby maintaining force effectiveness while simplifying the hole geometry.
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
The cam mechanism enables accurate and straightforward attachment of the valve plate housing frame to chamber walls, enhancing processability and reducing costs by eliminating the need for complex machinery and angled workpieces.
Implementation Method 1
a cam mechanism that generates a thrust force in a direction perpendicular to the axis of the fixation screw in the valve plate housing frame when tightening the fixation screw
Data Source
AI summary
To provide a gate valve such that two connected surfaces perpendicular to each other of a valve plate housing frame can be connected to two side walls perpendicular to each other of a chamber in such a manner that the connected surfaces are in contact with the side surfaces. When screwing a fixation screw perpendicularly into a screw hole formed in one chamber wall of a chamber through a screw insertion hole formed in one frame wall of a valve plate housing frame of a gate valve, and tightening the fixation screw to press and fix the frame wall against and to the first chamber wall, a thrust force in a direction perpendicular to the axis of the fixation screw is generated in the valve plate housing frame by a cam mechanism formed on the fixation screw and in the screw insertion hole, and the other frame wall of the valve plate housing frame is pressed against and fixed to the other chamber wall of the chamber by the thrust force.