Valve Top Automatic Return Mechanism
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Solution Overview
Problem
Existing valve tops do not automatically return to the 'completely closed' position after fluid withdrawal, leading to undesired water dispensing, especially with hot water, and require manual operation to reset.
Innovation Solution
A valve top design featuring a control sleeve and guide sleeve interplay, where the control sleeve is biased by a spring element and has slanted guide edges, allowing automatic return to the 'completely closed' position upon activation, enabling easy function exchange and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve top remains in the open position after fluid withdrawal, then the valve structure is simple, but water continues to be dispensed undesirably
Solution Approach 1:
The valve top employs a dynamic return mechanism where the control sleeve can move axially between open and closed positions. The spring element provides a restoring force that automatically returns the control sleeve to the closed position after operation, transforming a static valve structure into a dynamic one with automatic reset capability.
Solution Approach 2:
The valve top achieves self-service through the spring-biased control sleeve mechanism. After the valve is operated to withdraw fluid, the spring automatically pushes the control sleeve back to the closed position without requiring manual intervention, making the system self-resetting and reducing operational complexity.
2Productivity
If manual operation is required to reset the valve to closed position, then the mechanism is simpler, but operational efficiency decreases
Solution Approach 1:
The spring-biased control sleeve automatically returns the valve to the closed position after fluid withdrawal, eliminating the need for manual reset operations. This self-service mechanism significantly improves operational efficiency by reducing the number of manual steps required.
Solution Approach 2:
The valve operation follows a periodic cycle: opening for fluid withdrawal, then automatic closing via spring return. This periodic action pattern enables rapid successive operations without manual intervention between cycles, thereby increasing productivity.
3Extent of automation
If the control sleeve is biased by a spring element, then automatic return is achieved, but the device complexity increases
Solution Approach 1:
The control sleeve acts as an intermediary element between the spindle and the valve body. It translates rotational motion of the spindle into axial movement, and the spring provides the intermediary restoring force. This intermediary mechanism achieves automation while keeping the overall structure manageable.
Solution Approach 2:
The valve top is segmented into distinct functional components: the control sleeve for axial movement, the guide sleeve for radial guidance, and the spring element for biasing. This segmentation allows each component to perform its specific function independently, simplifying the design and maintenance of the automated return mechanism.
4Reliability
If ceramic disks are used for controlling through-flow, then sealing is improved, but the risk of defect increases
Solution Approach 1:
The valve top separates the ceramic sealing disks from the control mechanism. The control sleeve and guide sleeve can be replaced independently if defective, while the ceramic disks remain in place. This segmentation improves ease of repair by allowing replacement of only the mechanical components without disturbing the sealed ceramic surfaces.
Solution Approach 2:
The control sleeve and guide sleeve act as intermediary mechanical components between the operational spindle and the ceramic sealing surfaces. These intermediaries can be replaced if defective, protecting the more critical ceramic sealing surfaces from damage and simplifying maintenance.
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
Ensures automatic return to the 'completely closed' position after fluid withdrawal, reducing water dispensing and allowing for different operational modes without manual intervention, enhancing operational efficiency and reliability.
Implementation Method 1
the control sleeve is biased by a spring element and has slanted guide edges
Implementation Method 2
the control sleeve is biased against the guide sleeve, preferably by way of a spring element, preferably a helical spring
Data Source
AI summary
A valve top includes a head piece which is centrally penetrated by a spindle which is rotatably mounted in the head piece around its longitudinal axis and via which a control disk can be rotated relative to an inlet plate abutting the same, wherein a control sleeve having a control contour is arranged within the head piece on the spindle, and a guide sleeve having a guide contour is arranged opposite the control contour, which control sleeve and guide sleeve interact in such a way that after actuation of the control disk via the spindle into a defined direction, an autonomous return movement of the control disk into its starting position is effected.