Straight-Through Stop Valve Sealing Structure for Dead-Angle Hygiene
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Solution Overview
Problem
Straight-through globe valves used in antibiotic production face issues with liquid accumulation due to dead angles at the connection between the valve flap and metal parts, complicating cleaning and maintaining a sanitary and aseptic environment.
Innovation Solution
A valve opening and closing member with a valve core sealing gasket and securing ring, along with a sealing structure that includes an interference fit cylinder, prevents medium flow into clearances by securing the gasket to the valve flap, using an integrally formed external threaded column and blind internal threaded hole to ensure sealing and prevent liquid accumulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If threaded connection or rivet connection is used to secure valve core sealing gasket to valve flap, then the valve core sealing gasket is securely fixed, but dead angles are created where medium accumulates and cannot flow out
Solution Approach 1:
The patent extracts and eliminates the problematic threaded connection structure that creates dead angles. Instead of using traditional threaded or rivet connections between the valve flap and valve body, the invention integrates these components to remove the clearance spaces where liquid accumulation occurs, while maintaining the securing function through alternative structural design
Solution Approach 2:
The patent merges the valve flap and valve body into an integrated structure, eliminating the separate connection components (threads, rivets) that create dead angles. The sealing function and structural connection are combined into a unified design where the valve core sealing gasket is directly secured to the valve flap without creating clearance spaces
2Ease of manufacture
If traditional connection methods are used, then the valve structure is simple to manufacture, but cleaning and sterilization become difficult due to liquid accumulation
Solution Approach 1:
The patent removes the threaded connection structure that creates cleaning difficulties, replacing it with an integrated design that eliminates dead angles while maintaining manufacturing simplicity through direct forming or welding of the valve flap and valve body components
Solution Approach 2:
The patent applies local quality modification by creating a smooth, continuous surface structure at the connection area between valve flap and valve body, eliminating localized dead angles that trap liquid, while maintaining the overall simple manufacturing approach for the rest of the valve 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
Prevents liquid accumulation within the valve, simplifies sterilization and cleaning, and maintains a sanitary and aseptic environment by effectively sealing off dead angles, ensuring the integrity of the production process.
Implementation Method 1
the sealing structure includes a cylinder which is configured to be in interference fit with a cylindrical hole arranged below the internal threaded hole
Data Source
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AI summary
Provided are a valve opening and closing member and a straight-through globe valve. The valve opening and closing member includes a valve core sealing gasket, a valve core sealing gasket securing ring, and a valve flap. The valve core sealing gasket and the valve core sealing gasket securing ring are sequentially arranged on a side of the valve flap, and the valve core sealing gasket securing ring is configured to secure the valve core sealing gasket to the valve flap. The valve flap includes a valve flap body and an external threaded column coaxially arranged below the valve flap body; an internal threaded hole arranged on the valve core sealing gasket securing ring and threadedly connected to the external threaded column; and a sealing structure arranged on a side of the external threaded column facing away from the valve flap body and configured to prevent a medium from entering a clearance between the external threaded column and the internal threaded hole.