Control Valve Connector With Multi-Point Sealing Against Leakage
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Solution Overview
Problem
Traditional control valves experience leakage due to the simple screwing mechanism of the control knob onto the valve body, which fails to effectively stop water flow, leading to inefficiencies in water control.
Innovation Solution
A control valve design incorporating a valve body, a connecting member with a spherical end and through aperture, at least two sealing rings, and a positioning nut, where the connecting member's wider and narrower diameter sections create multiple sealing points to prevent water leakage by engaging with the valve body's threaded sections and inner walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the control knob is simply screwed onto the control valve with a nut to make assembly easy, then the ease of manufacture is improved, but the leakage-proof performance deteriorates because the maximum rotation distance cannot effectively stop the water
Solution Approach 1:
The invention divides the sealing function into multiple segments by introducing at least two sealing rings positioned at different locations along the control knob. This segmentation allows each sealing ring to independently contribute to the overall sealing performance, ensuring that even if one sealing point is insufficient, other sealing points maintain the leakage-proof effect while keeping the assembly structure relatively simple.
Solution Approach 2:
The invention introduces positioning nuts as intermediary components between the control knob and the valve body. These positioning nuts with threaded sections provide precise positioning and additional sealing interfaces, mediating the connection between the control knob and valve body to achieve both ease of assembly and improved leakage-proof performance through multiple sealing contact points.
2Reliability
If multiple sealing rings and positioning nuts are added to improve leakage-proof performance, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The control knob is designed to serve multiple functions: it acts as both the operating handle for controlling water flow and as a sealing element through the integrated positioning nuts and threaded sections. The positioning nuts simultaneously provide positioning, securing, and sealing functions, reducing the need for separate dedicated components and thereby limiting the increase in device complexity despite improved leakage-proof performance.
Solution Approach 2:
The invention employs a nested structure where positioning nuts with threaded sections are integrated into the control knob assembly. The sealing rings are positioned within grooves or channels on the control knob, and the entire assembly fits within the valve body housing. This nesting approach consolidates multiple sealing and positioning functions into a compact integrated structure, minimizing the increase in device complexity.
3Ease of operation
If the control knob rotation distance is maximized to improve operation range, then the ease of operation is improved, but the leakage-proof performance deteriorates because water cannot be effectively stopped
Solution Approach 1:
The positioning nuts with threaded sections are pre-positioned on the control knob at specific locations before assembly. These pre-positioned sealing elements ensure that sealing contact is established at predetermined points along the rotation path, maintaining leakage-proof performance regardless of the maximum rotation distance. The preliminary positioning of sealing elements decouples the relationship between rotation distance and sealing effectiveness.
Solution Approach 2:
The invention transitions from a single-point sealing approach to a multi-dimensional sealing strategy by positioning sealing rings and positioning nuts at different axial locations along the control knob. This dimensional distribution of sealing points ensures that sealing is maintained across the entire rotation range, allowing the control knob to achieve both extended rotation distance for ease of operation and effective water stopping capability.
Data Source
AI summary
A control valve connector has a valve body, a connecting member, at least two sealing rings and a positioning nut. The valve body has a first connecting opening and at least two second connecting openings, an outer edge of the second connecting opening provided with a threaded section. The first connecting opening is configured for coupling with the positioning nut, and the connecting member is a tubal body having a through aperture and a spherical end.