Pipe Fitting With Elastic Blocking Nut and Retained Gasket
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Solution Overview
Problem
Existing pipe fittings face difficulties in easy connection and disconnection due to the deformation of annular sealing gaskets and blocking ring nuts during pipe insertion, leading to inefficient sealing and blocking, especially when the nut is partially screwed to the main body.
Innovation Solution
The fitting incorporates a deformable annular sealing gasket with a widened mouth section and an elastically deformable blocking ring nut, along with retaining means such as an annular stiff element, which maintains the gasket's shape during pipe insertion and prevents deformation, allowing easy insertion and withdrawal even when the nut is partially screwed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the annular sealing gasket and blocking ring nut are fitted onto the pipe before insertion into the fitting body, then the pipe can be inserted into the fitting, but the gasket undergoes hard deformation during insertion which reduces sealing efficiency
Solution Approach 1:
The patent applies preliminary action by pre-assembling the fastening nut onto the fitting body threads, and positioning the blocking ring nut and sealing gasket within the fitting body before pipe insertion. This preparation ensures that when the pipe is inserted, the components are already in their correct positions and can perform their sealing and blocking functions immediately without undergoing hard deformation during the insertion process.
2Reliability
If the blocking ring nut has inner diameter substantially like outer diameter of the pipe, then the pipe blocking is effective, but the pipe cannot be easily inserted or withdrawn from the fitting
Solution Approach 1:
The patent applies dynamics by making the blocking ring nut elastically deformable. The blocking ring nut is designed with elastic material properties and appropriate geometric features (such as radial thickness and cross-sectional shape) that allow it to deform elastically during pipe insertion and withdrawal, and then return to its original shape to provide effective blocking. This dynamic behavior enables easy pipe insertion while maintaining reliable blocking effectiveness.
3Reliability
If the conical walls of the fitting body and fastening nut interfere with the blocking ring nut during tightening, then the pipe blocking and sealing are ensured, but the connection process becomes complicated and slow
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the blocking ring nut, specifically its radial thickness and cross-sectional shape. These parameter changes enable the blocking ring nut to deform elastically in a controlled manner during the tightening process, allowing the conical walls to engage effectively for reliable blocking and sealing while maintaining a simple and fast connection process.
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
This solution enables faster, reliable, and efficient connection and disconnection of pipes by preventing gasket deformation and interference, ensuring effective sealing and blocking without damaging the gasket or ogive during assembly and disassembly.
Implementation Method 1
the annular sealing gasket, truncated cone or of other shape, if fitted within the main body before the pipe insertion, would be subjected, during the pipe insertion to a hardly amendable deformation
Implementation Method 2
such blocking ring nut is elastically deformable at least in radial direction
Implementation Method 3
the strong friction and/or interference generated between the inner surface of the annular sealing gasket, made of rubber or synthetic material, and the outer surface of the pipe, made of metal or plastic, during the insertion of the pipe within the fitting
Data Source
AI summary
A fitting for a pipe is disclosed. It includes a main body for internally accommodating the pipe, fastening means able to be tightened to the main body, a deformable annular sealing gasket and a blocking ring nut which can be positioned within the fitting between the main body and the fastening means, respectively, to ensure the sealing of, and block in firm position, the pipe, at least when the fastening means are tightened to the main body, the blocking ring nut being elastically deformable in radial direction. The fitting also has means for retaining in a widened position at least the mouth section of the annular sealing gasket, with an inner diameter greater than the outer diameter of the pipe.