Notch Plate Design With Reinforcing Ribs For Valve Positioning
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Solution Overview
Problem
Existing notch plates in piping systems, especially those used in bulk material transport, face strength issues due to the need for robust materials like steel to accommodate multiple positions, leading to increased cost and complexity, and are prone to damage from abuse such as hammering and kicking, which can cause fingers to bend or break, especially when made from weaker materials like aluminum.
Innovation Solution
A notch plate design that incorporates intermediate notches and through notches, integrated with the valve stem housing, providing enhanced strength and durability, allowing for more positions without requiring separate steel components, and can be cast from aluminum, with travel stops and a detent mechanism to secure the valve handle in selected positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If notch plates are made from robust materials like steel to accommodate multiple positions, then strength is improved, but cost and device complexity increase
Solution Approach 1:
The patent combines the notch plate and travel stop into a single integrated component cast from aluminum alloy. This merging eliminates the need for separate steel components, reducing device complexity while maintaining strength through the integrated design and use of reinforcing ribs.
Solution Approach 2:
The patent changes the material parameter from steel to aluminum alloy, and compensates for the lower inherent strength by modifying the geometric parameters - adding reinforcing ribs and optimizing the thickness distribution. This allows achieving required strength with a lighter, less complex material.
2Device complexity
If notch plates are made from weaker materials like aluminum to reduce cost and complexity, then device complexity is reduced, but strength deteriorates making them prone to damage from abuse
Solution Approach 1:
The patent modifies the geometric parameters of the aluminum notch plate by adding reinforcing ribs and optimizing thickness distribution. These parameter changes compensate for the lower inherent strength of aluminum, enabling the material to withstand abuse forces while maintaining simplicity and low cost.
Solution Approach 2:
The patent uses aluminum alloy with specific properties (strength, castability) and combines it with geometric reinforcement features. This creates a composite solution of material + structure that achieves the required performance without the complexity of multi-material construction.
3Adaptability or versatility
If notch plates have more valve positions to provide greater adjustability, then adaptability is improved, but fingers must be narrower which reduces strength
Solution Approach 1:
The patent changes the geometric parameters of the fingers by adding reinforcing ribs and optimizing thickness. This allows the fingers to be narrower (providing more notches for greater adjustability) while maintaining sufficient strength through the reinforcement features.
Solution Approach 2:
The patent segments the finger structure by adding reinforcing ribs that divide the finger into sections. This segmentation provides structural reinforcement without increasing the overall finger width, allowing narrower fingers with more notches while maintaining strength.
Data Source
AI summary
A valve having an improved multiple position notch plate providing a large number of selectable valve positions with enhanced strength, including in the travel stop limiting the range of movement of the valve handle connected to the valve member. The notch plate includes a plurality of intermediate notches extending only partially through a radial outer periphery thereof, at spaced locations along an arcuate path of movement of a detent element in connection with the valve handle. In one embodiment, the intermediate notches are disposed in radial outer tips of fingers defining a plurality of through notches extending completely through the notch plate, also for receiving the detent element for holding the handle. As a result a greater number of valve positions can be achieved, with robustness and strength to withstand hammer blows, kicking and the like.