Replaceable Valve Seat Assembly With Nested Bolt Head
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Solution Overview
Problem
Existing valve seat units require the replacement of the entire cylinder when the valve seat plate wears out, leading to unnecessary disposal of components and potential impairment of seating performance.
Innovation Solution
A valve seat unit design featuring a separate base and bolt configuration, where the bolt head is positioned between the seat surface and seat back surface, allowing the valve seat to be replaced independently without affecting the base, thus reducing the number of parts to be disposed of and ensuring stable seating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve seat plate is formed integrally with the cylinder, then the seating performance is stable, but the number of parts to be disposed of increases when replacement is needed
Solution Approach 1:
The valve seat unit is divided into separate components: the valve seat (including seat plate and seat back surface) and the base (cylinder), connected by a bolt. This allows the valve seat to be replaced independently without disposing of the base, resolving the contradiction between stable seating performance and reduction of parts to be disposed of.
2Loss of substance
If the valve seat is replaced independently from the base, then the number of parts to be disposed of is reduced, but the seating performance may be impaired
Solution Approach 1:
The bolt head is positioned inside the valve seat structure, with the bolt passing through the seat plate and securing the valve seat to the base. This nested arrangement ensures that when the valve seat is replaced, the bolt remains in place, maintaining the structural integrity and seating performance while allowing independent replacement of the valve seat.
3Device complexity
If the bolt head is positioned outside the valve seat, then the structure is simpler, but the seating process is interfered with
Solution Approach 1:
The bolt head is nested within the valve seat structure, specifically positioned between the seat plate and the discharge valve. This placement prevents the bolt head from interfering with the valve's seating process on the seat surface, while still providing secure fastening. The bolt shank passes through the seat back surface to secure the assembly.
Data Source
AI summary
A valve seat unit according to an embodiment of the present disclosure, includes: a base; a valve seat including a seat surface for a valve to sit on and configured separately from the base; and a bolt securing the valve seat to the base. A head portion of the bolt is located between the seat surface and a seat back surface of the valve seat located opposite to the seat surface.