Compound seal pipe joint and method and application
A composite sealing and pipe joint technology, applied in the direction of pipe/pipe joint/pipe fitting, threaded connection, passing element, etc., can solve the problems of inability to achieve sealing effect, inflexible use, deformation of pipe wall, etc., and achieve light weight and simple structure. , The effect of high anti-pulling force
Pending Publication Date: 2017-12-15
海盐管件制造有限公司
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Problems solved by technology
[0003] Existing pipe diameters that use cut-in seal and tension seal structure can only reach a maximum outer diameter of 50mm at present, and those exceeding 50mm are usually flanged or welded. The structure is complicated, the installation is complicated, the operation is inconvenient, and the use is not flexible enough; In the case of thin wall, if the pipe diameter is large, the pipe wall will be deformed before cutting into the outer wall when cutting into the seal and tension seal, and the sealing effect cannot be achieved.
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Embodiment Construction
[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0028] Example.
[0029] see Figure 1 to Figure 8 , the composite sealed pipe joint in this embodiment includes a joint body 1, a nut 2, a cut-in sleeve 3 and an O-ring 4, wherein the joint body 1, the nut 2 and the cut-in sleeve 3 are all made of stainless steel, copper, aluminum alloy or nylon .
[0030] In this embodiment, the left and right outer walls of the joint body 1 are provided with external threads 11 , the joint body 1 is provided with a joint body through hole, and a ring of sealing ring grooves 12 are respectively provided at both ends of the joint body through hole. The through-holes of the joint body are successively a cylindrical hole 13, a truncated circular hole 14, a cylindrical hole 2 15 and...
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The invention provides a compound seal pipe joint. The compound seal pipe joint comprises a joint body, a nut, a cut-in sleeve and an O-shaped sealing ring; external threads are arranged on the outer walls of the left and right sides of the joint body; a joint body through hole is formed in the joint body; two sealing ring grooves are formed in two ends of the joint body through hole; the joint body through hole consists of a first cylinder hole, a circular table type hole, a second cylindrical hole and a third cylindrical hole in sequence from outside to inside; the aperture of the first cylindrical hole is smaller than the apertures of the sealing ring grooves; the aperture of the circular table type hole is gradually reduced in the direction from the first cylindrical hole to the second cylindrical hole until the aperture of the circular table type hole is equal to the aperture of the second cylindrical hole; the aperture of the third cylindrical hole is smaller than the aperture of the second cylindrical hole; a boss is formed on the hole wall of the third cylindrical hole; and a nut through hole is formed in the nut. The sealing form of the pipe joint is compounding of cutting-in of the elastic sealing ring and axial sealing; and the cutting-in of a cut-in sleeve stop port at the outer diameter of a connected pipe is finished by dint of the cut-in sleeve under the condition of inner pushing of the nut, so that the pull-out preventing effect of the connected pipe is achieved without welding and flanges.
Description
technical field [0001] The present invention relates to a pipe joint, its sealing method and its use, in particular to a composite sealed pipe joint, its method and its use, which is mainly used for installation in the pipeline for transporting air, such as the pipeline can be connected with an air compressor. Background technique [0002] With the development of science and technology, the scope of application of the pipeline system is becoming wider and wider, and it is widely used in all walks of life. Higher requirements are also put forward for the safety and reliability of the pipeline system. Among them, the ferrule-type pipe joint has the characteristics of simple structure, convenient use and no welding. It is a convenient, reliable, easy-to-install and disassemble medium-high pressure pipe The connection method of the road, as shown in the Chinese patent application number 201521101452.5. However, most of the existing sealing methods are to directly arrange corres...
Claims
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IPC IPC(8): F16L15/08F16L15/04
CPCF16L15/04F16L15/08
Inventor陆建忠王奎东
Owner海盐管件制造有限公司