Casting Mold Gas Suction Valve with Swirling Anti-Fouling Flow
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Solution Overview
Problem
The existing gas suction devices for casting molds face issues with foreign matter adhering to the shut-off valve, which reduces the sealing performance and requires frequent maintenance, thereby decreasing the effective operating rate of the casting mold.
Innovation Solution
A gas suction device design featuring a shut-off valve with a valve element and housing section that includes an obtuse angle between the downstream-side housing portion and the angle reference surface, an arc-shaped outer peripheral edge, and a swirling introduction path to prevent foreign matter adhesion, utilizing a filter to trap foreign matter and maintain efficient gas suction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional shut-off valve is used in the gas suction device, then the gas suction function is achieved, but foreign matter adheres to the shut-off valve reducing sealing performance and requiring frequent maintenance
Solution Approach 1:
The patent extracts and removes foreign matter from the gas flow before it reaches the shut-off valve by introducing a dedicated suction path that draws foreign matter away from the valve area, preventing adhesion and maintaining sealing performance without requiring frequent maintenance interruptions
Solution Approach 2:
The patent introduces a filter as an intermediary component between the cavity and the shut-off valve. The filter captures foreign matter in the gas flow, acting as a mediator that protects the shut-off valve from direct contact with contaminants, thereby maintaining sealing performance and reducing maintenance frequency
2Reliability
If maintenance operations are performed frequently to remove foreign matter from the shut-off valve, then sealing performance is restored, but the effective operating rate of the casting mold decreases
Solution Approach 1:
The patent performs preliminary action by capturing foreign matter in advance before it can adhere to the shut-off valve. The filter and suction path system removes contaminants from the gas flow upstream of the valve, preventing adhesion before it occurs and eliminating the need for frequent maintenance interventions
Solution Approach 2:
The patent implements a self-cleaning mechanism where the suction path continuously draws foreign matter away from the shut-off valve area, and the filter automatically captures contaminants. This self-service system maintains valve cleanliness and sealing performance automatically without requiring external maintenance operations
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
The design effectively suppresses foreign matter adhesion to the shut-off valve, ensuring efficient gas suction and reducing maintenance needs, thereby maintaining the sealing performance and operational efficiency of the casting mold.
Implementation Method 1
the introduction path is connected to the upstream-side housing portion along a tangential direction of the outer peripheral edge
Data Source
AI summary
A gas suction device of a casting mold includes an overflow portion, a suction path, and a shut-off valve. The shut-off valve includes a housing section for housing a valve element. An upstream-side housing portion of the housing section has an arc-shaped outer peripheral edge. The overflow portion includes an introduction path which is continuous with the upstream-side housing portion and guides gas to the upstream-side housing portion. At a predetermined location on the outer peripheral edge, the introduction path is connected to the upstream-side housing portion along the tangential direction of the outer peripheral edge.