Compact Valve Cartridge With Axial-Bore Spindle for Tight Installations
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Solution Overview
Problem
Existing straight way valves are complex in construction and require significant installation space, making them inefficient in terms of space utilization.
Innovation Solution
A valve cartridge design featuring a spindle with an axial bore for water passage, held turnably and axially displaceably in a headpiece with minimized outside diameter, allowing for compact configuration and integration into straight way valve fittings with minimized installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional straight way valves are designed with multiple shoulders for axial fixation of the spindle, then the spindle can be securely fixed, but the outside diameter of the headpiece increases and installation space is enlarged
Solution Approach 1:
The invention merges the axial fixation function with the sealing function by integrating the sealing element into the spindle structure itself. The sealing element is axially displaceable within the spindle and provides both sealing against the seat and axial positioning, eliminating the need for separate fixation shoulders on the headpiece.
Solution Approach 2:
The sealing element is nested within the spindle, allowing it to be housed inside the spindle structure rather than requiring external fixation features. This nested arrangement enables the sealing element to provide axial displacement control while maintaining a compact headpiece diameter.
2Ease of operation
If traditional straight way valves use separate fixed disks and control disks with sliding contact, then flow rate control is achieved, but the construction becomes complex and installation space increases
Solution Approach 1:
The invention combines the functions of the fixed disk and control disk into a single integrated valve seat structure. The sealing element on the spindle interacts with this integrated seat, eliminating the need for separate sliding disks and reducing construction complexity while maintaining flow control capability.
Solution Approach 2:
The sealing element serves multiple functions: it provides sealing against the valve seat, acts as the control element for flow rate adjustment through axial displacement, and provides axial positioning for the spindle. This multi-functionality reduces the number of separate components needed.
Data Source
AI summary
A valve cartridge includes a top part that is penetrated in the center by a spindle which is rotatably and axially slidably mounted in the top part and which includes an axial through-hole to allow water to flow therethrough; the spindle actuates a valve, by which the flow rate of the water through the through-hole can be controlled.