Flow Regulating Apparatus Valve Seat Design
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Solution Overview
Problem
The existing flow regulating apparatus experiences deformation of the valve hole due to repeated contact with the needle part, leading to inadequate flow rate regulation and retention of fluid and particles.
Innovation Solution
A flow regulating apparatus with a taper-shaped valve seat part and a diaphragm part, where the contact position between the valve body and seat is separated from the valve hole edge, preventing direct stress transmission and using a circular arc connection part to guide fluid flow, thereby preventing deformation and retention of fluid and particles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the needle part contacts the bottom surface of the needle housing part to block fluid flow, then the flow rate regulation is achieved, but the valve hole diameter deforms due to repeated contact stress
Solution Approach 1:
The invention extracts the harmful contact function from the valve hole edge and relocates it to a dedicated valve seat part. The needle part base end contacts the valve seat part instead of the valve hole edge, separating the sealing function from the structural integrity of the valve hole, thus preventing deformation while maintaining flow regulation.
Solution Approach 2:
The valve seat part acts as an intermediary element between the needle part and the valve hole. It receives the contact stress from the needle part base end and redirects it away from the valve hole edge through its inclined surface, preventing direct stress transmission that would cause deformation.
2Ease of manufacture
If the needle housing part is formed as a circular concave part, then the needle part can be housed, but fluid and particles are retained and accumulated in the outer edge portion
Solution Approach 1:
The invention applies curvature to the valve seat part by forming it with an inclined surface that slopes away from the valve hole. This curved geometry prevents fluid and particles from accumulating in the outer edge portion by guiding them smoothly away, eliminating dead zones while maintaining the circular housing structure.
Data Source
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AI summary
A flow regulating apparatus (100) including: a valve body part (1) having a projecting part (5a) provided at a tip thereof; and a taper-shaped valve seat part (33) in which a distance from a center axis (C) gradually becomes longer at a constant inclination as it gets away from a valve hole (32) along a center axis (C) direction of a valve chamber (30), in which in a blocking state where inflow of the fluid from the valve hole (32) to the valve chamber (30) is blocked, a contact position (33a) where the needle part (5a) and the valve seat part (33) come into contact with each other is separated from a valve hole edge (32a) serving as a boundary of the valve hole (32) and the valve seat part (33).