Valve Seat Locking Ring Post-Coating Attachment
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Solution Overview
Problem
The existing methods for attaching valve seats to valve housings using adhesives are time-consuming, prone to coating damage, and make replacement impractical, as they require masking and unmasking processes that can lead to premature corrosion and necessitate replacing the entire valve when only the seat needs replacement.
Innovation Solution
A valve seat design featuring cylindrical symmetry with locking-ring grooves and screw elements that allow secure attachment after the coating process, utilizing a locking-ring with a closed helix configuration and O-ring groove for a gripping relationship between the valve seat and housing, enabling attachment post-coating without damaging the protective layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If adhesive attachment method is used, then good adhesion to valve housing is achieved, but replacement of valve seat becomes impractical and entire valve must be replaced
Solution Approach 1:
The valve assembly is segmented into separable components: the valve body and the valve seat. The locking ring mechanism enables the valve seat to be independently attached and detached without affecting the valve body, allowing replacement of only the seat component when needed.
Solution Approach 2:
The attachment system transitions from a static adhesive bond to a dynamic mechanical locking system. The locking ring can be engaged and disengaged through screw elements, enabling the valve seat to be securely attached during operation and easily removed for replacement when necessary.
2Manufacturing precision
If masking process is used before coating, then good coating coverage is achieved, but time is consumed and coating may crack or peel during unmasking
Solution Approach 1:
The valve seat is attached to the valve body before the coating process using the locking ring mechanism. This preliminary attachment eliminates the need for subsequent masking operations, as the seat is already in its final position and does not require protective coverage during coating.
Solution Approach 2:
The masking step is extracted and eliminated from the process sequence. By attaching the valve seat beforehand, the problematic masking and unmasking operations are completely removed, saving time and avoiding coating damage.
3Reliability
If adhesive attachment is used, then valve seat is securely fixed, but the entire valve must be replaced when seat needs replacement
Solution Approach 1:
The valve assembly is divided into independent replaceable modules. The locking ring and screw elements create a self-contained attachment system that allows the valve seat to be serviced independently, reducing replacement complexity from entire valve to just the seat component.
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
The valve seat of the present invention is configured for attachment to the valve housing after the valve housing has been coated with a protective coating. The valve seat is configured to grip the valve housing, thereby providing a secure attachment. In its simplest form, the valve seat and the valve housing are both configured with corresponding locking-ring grooves, and a locking-ring element is positioned so as to be at least partially deployed in both the valve seat locking-ring groove and the valve housing locking-ring groove simultaneously. It will be appreciated that the features of the present invention may be used to benefit with substantially any type and style of valve known in the art.