Segmented Mixture Preventing Valve for Smooth Washing Flow
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Solution Overview
Problem
Conventional mixture preventing valves with complex valve seat shapes cause fluid stagnation and reduced flow velocity, leading to prolonged washing times, especially when dealing with washing fluids.
Innovation Solution
A mixture preventing valve design featuring a valve body with multiple pieces that contact the valve seat on a tapered or spherical surface, simplifying the valve seat configuration to enhance fluid flow and prevent vortex generation, along with a valve rod that supports the valve body and protrudes outside the flow passage to stabilize fluid quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex valve seat shape is used to enable multiple valve bodies to contact the valve seat, then the valve can effectively block the communication passage, but the fluid flow becomes stagnant and vortexes are generated reducing washing efficiency
Solution Approach 1:
The valve body is divided into multiple valve body pieces (first valve body piece, second valve body piece, etc.) that can independently contact the valve seat. This segmentation allows each piece to be positioned optimally for sealing while maintaining smooth fluid flow paths, resolving the contradiction between reliable sealing and washing efficiency.
2Reliability
If multiple valve bodies are disposed in the same plane to block the communication passage, then the valve can prevent mixing of different fluids, but the inner wall surface of the communication passage becomes complicated causing fluid stagnation
Solution Approach 1:
The valve body pieces are arranged in different planes rather than all in the same plane. The first valve body piece is disposed in a first plane and the second valve body piece is disposed in a second plane different from the first plane. This dimensional arrangement maintains effective mixture prevention while simplifying the inner wall surface geometry and eliminating fluid stagnation zones.
Data Source
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AI summary
A mixture preventing valve includes a first flow passage (11) for allowing a first fluid to flow; a second flow passage (12) for allowing a second fluid to flow; a communication passage (13) for allowing the first flow passage (11) and the second flow passage (12) to communicate with each other; a valve body (17) that moves to open and close the communication passage (13); and a valve seat (18) that is provided on an inner wall surface of the communication passage (13), and comes into contact with the valve body (17). The valve body (17) includes a first valve body piece (17a) and a second valve body piece (17b) that are arranged side by side in a state of being separated from each other in a movement direction of the valve body (17). The valve seat (18) comes into contact with respective outer peripheral surfaces of the first valve body piece (17a) and the second valve body piece (17b). In the inner wall surface, a portion (18a) where the valve seat (18) comes into contact with the outer peripheral surface of the first valve body piece (17a), and a portion (18b) where the valve seat (18) comes into contact with the outer peripheral surface of the second valve body piece (17b) exist on the same plane.