Nested Poppet Vent Valve for IBC Pressure Relief
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Solution Overview
Problem
The GITS pressure/vacuum relief valve for intermediate bulk containers (IBCs) is prone to leaking, unreliable, and not rugged enough for industrial environments, with issues stemming from a common post that causes sealing complexity, opposing springs leading to instability, and exposure to materials that can damage the springs, as well as a high profile that makes it susceptible to damage and difficult to handle.
Innovation Solution
A valve design featuring two poppets with independent resilient members and seals, eliminating the need for a central post, reducing complexity and exposure to materials, and allowing for manual ventilation by incorporating an actuator that neutralizes pressure differentials, enhancing reliability and ruggedness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common post is used to support both poppets, then device complexity is reduced, but sealing reliability deteriorates due to sealing complexity
Solution Approach 1:
The patent divides the valve into two independent poppet assemblies, each with its own resilient member and seal. This segmentation eliminates the common post that caused sealing complexity, allowing each poppet to be sealed independently against the housing, thereby improving sealing reliability without significantly increasing overall device complexity.
2Adaptability or versatility
If opposing springs are used for pressure and vacuum relief, then both functions are integrated, but stability deteriorates due to mechanical instability
Solution Approach 1:
The patent uses two separate resilient members (springs) that operate independently rather than opposing springs. Each resilient member is contained in its own space and acts on a different poppet, eliminating the mechanical instability caused by opposing springs while maintaining the integrated pressure and vacuum relief functions.
3Ease of operation
If resilient members are exposed to container materials, then manual ventilation is enabled, but reliability deteriorates due to material damage
Solution Approach 1:
The patent introduces a valve body housing as an intermediary structure that contains the resilient members, protecting them from direct exposure to container materials. The housing allows manual ventilation operation while shielding the resilient members from corrosive or damaging materials, thereby maintaining their integrity and reliability.
4Ease of operation
If a high profile valve design is used, then manual operation is facilitated, but ruggedness deteriorates due to susceptibility to damage
Solution Approach 1:
The patent employs a compact nested design where the second poppet is positioned within the first poppet's space, and resilient members are contained within dedicated spaces. This nesting reduces the overall profile and footprint of the valve, making it more rugged and less susceptible to damage while maintaining manual actuation accessibility through the valve body.
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 new valve design significantly reduces leakage, improves reliability, and enhances ruggedness by eliminating the central post, stabilizing the spring mechanism, and enabling manual ventilation, ensuring effective pressure and vacuum regulation without compromising the integrity of the resilient members.
Implementation Method 1
a first resilient member disposed within a first space between said housing and said first poppet, and having a resilient force sufficient to hold said first poppet in said first closed position
Implementation Method 2
a second resilient member disposed within a second space between said first poppet and said second poppet, and having a resilient force sufficient to hold said second poppet in said closed position
Implementation Method 3
to allow said first poppet to move in said first direction to said first open position when said fluid pressure differential exceeds said first point
Implementation Method 4
to allow said second poppet to move in a second direction, different from said first direction, to said second open position when said pressure differential exceeds said second point
Data Source
AI summary
In one embodiment, the valve (100) comprises: (a) a housing (101) configured to interengage with a container (401), and having at least one axis (101a) and at least one aperture (105); (b) a first poppet (110) axially movably within said housing (101) between a first closed position and a first open position; (c) a second poppet (120) axially movable within said first poppet (110) between a second closed position and a second open position; (d) a first seal (111) between said first poppet (110) and said housing (101); (e) a second seal (121) between said first poppet (110) and said second poppet (120); (f) a first resilient member (112) disposed within a first space (130) between said housing(101) and said first poppet (110), and having a resilient force sufficient to hold said first poppet (110) in said first closed position such that said first poppet (110) urges said first seal (111) against said housing (101) when a pressure differential axially across said first poppet (110) is below a first point, and to allow said first poppet (110) to move in said first direction to said first open position when said fluid pressure differential exceeds said first point; and (g) a second resilient member (122) disposed within a second space (140) between said first poppet (110) and said second poppet (120), and having a resilient force sufficient to hold said second poppet (120) in said closed position such that that said second poppet (120) urges said second seal (121) against said first poppet (110) when a pressure differential axially across said second poppet (120) is below a second point, and to allow said second poppet (120) to move in a second direction, different from said first direction, to said second open position when said pressure differential exceeds said second point.