Slide Valve Mounting Aid for Visual Spring Installation Check
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Solution Overview
Problem
In slide valves, it is difficult to determine if the spring element and/or valve slide have been correctly fitted in the housing bore, as the down-pressed state makes it hard to verify the installation, and issues arise when one of these parts is missing or incorrectly positioned.
Innovation Solution
A mounting aid device with a movable mounting slide and guide piece is used, where the guide piece is placed coaxially on the valve housing, allowing the mounting slide to be force-loaded under compression of the spring element, enabling precise positioning and visual confirmation of correct installation by varying protrusion lengths, and a stop element limits the valve slide's movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the valve slide is pressed down into the housing bore, then the valve slide is securely mounted in position, but it becomes difficult or impossible to verify whether the spring element and valve slide are correctly fitted
Solution Approach 1:
The mounting slide is designed to protrude from the guide piece by a specific length before the valve slide is fully compressed. This preliminary protrusion state allows visual verification that the spring element and valve slide are correctly positioned before final compression occurs. The protrusion serves as an advance indicator of correct assembly, enabling verification before the valve slide is pressed down into its final mounted position.
2Ease of manufacture
If a mounting aid device is used to press down the valve slide, then the valve slide can be mounted, but the device becomes complex and requires high forces
Solution Approach 1:
The mounting slide serves multiple functions: it guides the valve slide into the housing bore, transmits the compressive force from the operator to the valve slide, and provides a visual indicator through its protrusion length to show correct assembly. By combining guidance, force transmission, and verification functions into a single component, the device complexity is minimized while maintaining ease of mounting.
Solution Approach 2:
The mounting slide acts as an intermediary tool between the operator and the valve slide. Instead of directly pressing the valve slide, the operator presses the mounting slide, which in turn compresses the spring element and moves the valve slide. This intermediary approach distributes the force and simplifies the mounting operation.
3Manufacturing precision
If the spring element is compressed to move the valve slide, then the valve slide reaches the correct position, but high forces are required
Solution Approach 1:
The mounting process utilizes the dynamic compression of the spring element. As the mounting slide progresses into the housing bore, the spring element gradually compresses, allowing the valve slide to move incrementally to its correct position. The spring's progressive resistance provides natural feedback, allowing the operator to apply force gradually rather than requiring a sudden high force impulse.
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 solution allows for simple, low-force operation to ensure correct installation of the spring element and valve slide, providing clear visual cues for correct mounting and preventing misalignment or missing parts, while minimizing friction and creating space for a stop element to close the housing bore.
Implementation Method 1
a spring element (8) supported on the valve housing (1)... with a first end position in which the axial movement of the valve slide (6) is limited when the spring element (8) is compressed
Data Source
AI summary
A mounting aid device for mounting a valve slide in a housing bore of a valve housing of a slide valve includes a mounting slide arranged movably in a guide of a guide piece and protruding out of the guide of the guide piece on both sides. The guide piece includes a first stop, with which the guide piece is placeable coaxially to the housing bore when the guide piece contacts the valve housing at the first stop. The mounting slide configured to protrude into the housing bore until contact on the second end region of the valve slide and, by force-loading of the mounting slide under compression of the spring element, the valve slide is movable until the valve slide reaches the first end position.