Inline Interlocking Poppet Valve Force Balancing
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Solution Overview
Problem
Existing directional seated valves face performance losses due to lack of force-balancing, requiring high actuating forces and complex structural designs, which can lead to failure and difficulties in controlling fluid connections effectively.
Innovation Solution
A directional seated valve design featuring interlocking actuating rods and valve pistons arranged in an inline configuration with restoring devices, allowing for simple actuation with low forces and improved control functions, enabling compact and cost-effective construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If conventional valve piston arrangements are used, then the valve can control fluid ports, but the valve pistons require high actuating forces due to lack of force-balancing
Solution Approach 1:
The patent combines multiple valve pistons (first, second, third, and fourth valve pistons) into a single integrated valve cartridge assembly where they work together as a unified force-balanced system. The pistons are arranged in pairs that interlock and move relative to each other, sharing actuating forces and achieving force-balancing that reduces the required actuation force while improving reliability.
2Manufacturing precision
If complex actuation mechanisms are used to achieve defined opening of control edges, then control precision is improved, but device complexity increases and failure risk increases
Solution Approach 1:
The patent employs dynamic movement of valve pistons relative to each other within the valve cartridge, where the pistons can move independently in response to actuating forces. This dynamic arrangement allows the control edges to automatically achieve defined openings through the relative motion of paired pistons, eliminating the need for complex mechanical actuation mechanisms while maintaining precision.
3Volume of moving object
If valve pistons are arranged in interlocking pairs with return mechanism, then installation space is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent segments the valve cartridge into distinct paired piston assemblies (first and second valve pistons as one pair, third and fourth valve pistons as another pair), where each pair is independently manufacturable yet functions as an integrated unit. This segmentation allows for standardized manufacturing of piston pairs that can be assembled into the compact valve cartridge, reducing overall installation space while maintaining ease of manufacture through modular construction.
Data Source
Figure 1~2
AI summary
The invention relates to a directional poppet valve (10), comprising valve pistons (16-22) arranged in a valve housing (12) for controlling a plurality of fluid connections (A, B, P, T), wherein the positions of each of the valve pistons (16-22) in the valve housing (12) can be changed by means of at least one actuating device, and wherein the fluid connections (A, B, P, T) are connected to one another or separated from one another alternately depending on the position of the valve pistons (16-22). The invention is characterised in that the valve pistons (16-22) are arranged inline along at least one axis (R), consecutively and/or at least such as to partially interengage, in the valve housing (12).