Mining Hose Joint Assembly for High-Pressure Leak Tightness
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Solution Overview
Problem
Existing methods for connecting high-pressure mining hoses, such as thread interfaces and U-shaped clamp connectors, suffer from unstable connections, thread wear, and poor tightness, leading to water leaks and safety hazards.
Innovation Solution
A mining hose connecting device comprising a joint unit with first and second joints, a first fastening unit arranged symmetrically, and a second fastening unit with fasteners, which ensures a firm connection and enhanced drag resistance by providing multiple sealing points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If thread interfaces are used to connect high-pressure hoses, then the connection can be assembled, but frequent disassembly causes thread wear resulting in unstable joint connection and poor seal tightness
Solution Approach 1:
The connecting device is divided into a first connecting piece and a second connecting piece with distinct features (first connecting feature and second connecting feature), allowing assembly without traditional threads while preventing disassembly through complementary geometric shapes that interlock
Solution Approach 2:
The connecting features have specific local geometric properties (such as protrusions and recesses with particular shapes and orientations) that provide both ease of assembly in the correct orientation and prevention of disassembly, creating different local characteristics at the connection interface
2Ease of operation
If U-shaped clamp connectors are used to connect high-pressure hoses, then operation is convenient, but tight butt of water pipe connectors cannot be ensured resulting in poor tightness and water leaks
Solution Approach 1:
The connecting features incorporate localized sealing surfaces and geometric interlocking elements that ensure tight butt connection between hoses, with specific local properties (such as tapered surfaces and precision-fitted interfaces) that maintain seal integrity under high pressure while remaining easy to operate
Solution Approach 2:
The connecting pieces are designed with pre-formed geometric features that guide proper alignment and ensure tight connection before the hose is fully assembled, preventing misalignment and ensuring seal tightness from the outset of the connection process
Data Source
AI summary
The present invention relates to a mining hose connecting device and method, and belongs to the field of underground hydraulic equipment for coal mines. The mining hose connecting device comprises a joint unit, wherein the joint unit comprises a first joint and a second joint; a first fastening unit, wherein the first fastening unit is arranged symmetrically about a first plane, and the inner diameter of the first fastening unit is respectively in clearance fit with the outer diameters of the first joint and the second joint; and a second fastening unit, comprising a first fastener and a second fastener, wherein the inner diameters of the first fastener and the second fastener are respectively in clearance fit with the outer diameter of the first fastening unit. A first hose and a second hose are connected respectively through the first joint and the second joint, the end face seal of the joint unit is realized through the first fastening unit, the secondary seal of the first fastening unit is carried out through the second fastening unit to form a firm connecting structure, and the drag resistance of the first hose and the second hose after connection is enhanced to avoid blowout of flow media.