Double-clamping spin-pressing metal pipe fitting

Abstract

The invention relates to the technical field of pipeline fittings, in particular to a double-clamping spin-pressing metal pipe fitting which comprises a first pipe fitting, an isosceles trapezoidal sealing ring, a flat gasket, a spring wave gasket, a clamping ring, a fastening member and a second pipe which are sequentially mounted on the inner side of the first pipe fitting, an external thread on the outer side of the fastening member and an internal thread on the inner side of the first pipe fitting are in threaded connection, the second pipe penetrates the fastening member and then is socketed in the first pipe fitting, a first concave groove used for filling of the clamping ring is formed in the outer side wall of the second pipe, a wrench opening groove is formed in the tail of the fastening member, and a second concave groove is formed in the inner side of the first pipe fitting and filled with an O-shaped sealing ring. The double-clamping spin-pressing metal pipe fitting is convenient to assemble and remarkable in fastening and double-sealing effect.

Description

technical field [0001] The invention relates to the technical field of pipe fittings, in particular to a double-clip spinning metal pipe fitting. Background technique [0002] A pipeline is a device used to transport gas, liquid or fluid with solid particles connected by pipes, pipe connectors and valves. Usually, after the fluid is pressurized by blowers, compressors, pumps and boilers, it flows from the high-pressure part of the pipeline to the low-pressure part, and it can also be transported by the pressure or gravity of the fluid itself. [0003] Pipes are widely used, mainly used in building water supply, drainage, heat supply, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial installations. Connector designs are also evolving. [0004] At present, there are many kinds of pipe fittings on the market, generally using welding or pressing connection, but although the welding connection ...

AI Technical Summary

Problems solved by technology

[0004] At present, there are many kinds of pipe fittings on the market, generally using welding or pressing connection, but although the welding connection is fastened, the welding material is more complicated to deal with, and the service life is not long, while the resistance of the pressing connection The pressure, torque, and pulling force are not enough, and the resistance to thermal expansion and cold contraction is not enough. At the same time, the sealing effect is not enough after long-term use. Once the fluid leaks, it may cause serious safety accidents.

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