CN217328933U - Corrugated pipe joint - Google Patents
Corrugated pipe joint Download PDFInfo
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- CN217328933U CN217328933U CN202123452444.3U CN202123452444U CN217328933U CN 217328933 U CN217328933 U CN 217328933U CN 202123452444 U CN202123452444 U CN 202123452444U CN 217328933 U CN217328933 U CN 217328933U
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- corrugated pipe
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Abstract
The utility model relates to a corrugated pipe joint, which comprises a joint body and a clamping ring, wherein a pipe connecting hole for connecting a corrugated pipe and a threaded hole for connecting an external threaded joint are formed in the joint body, the pipe connecting hole is a stepped hole consisting of a large hole section and a small hole section, namely, a first step surface is formed between the large hole section and the threaded hole, a second step surface is formed between the large hole section and the small hole section, and the clamping ring clamps the second step surface limited on the large hole section after clamping the corrugated pipe; the pressing cushion block is arranged between the large hole section and the threaded hole, the pressing cushion block is provided with a large ring section and a small ring section which are distributed in a stepped mode, a first annular sealing gasket used for sealing the small ring section and the pipe orifice of the corrugated pipe is arranged in the large hole section, a second annular sealing gasket used for sealing the large ring section and the end part of the external threaded connector is arranged in the threaded hole, the pressing cushion block is used for conducting the extrusion stress of the first annular sealing gasket and the second annular sealing gasket, and therefore reliable pressing between the two sealing gaskets when the pipe diameter difference value is large is effectively guaranteed, sealing is reliable and stable.
Description
Technical Field
The utility model relates to a metal pipe joint, especially a bellows joint.
Background
The corrugated pipe joint is a metal joint for connecting corrugated pipes, and generally comprises a joint body, a clamping ring, a sealing gasket and other structures, wherein one end of the joint body is provided with a pipe connecting hole for connecting the corrugated pipe, the other end of the joint body is a threaded hole for connecting an external threaded joint, the clamping ring and the sealing gasket are arranged between the pipe connecting hole and the threaded hole, the crest or the trough of the corrugated pipe is clamped by the clamping ring, the clamping ring is clamped in the pipe connecting hole, and the sealing gasket is tightly pressed between the pipe orifice of the corrugated pipe and the external threaded joint along with the threaded hole and the external threaded joint during threaded locking. The sealing structure of the corrugated pipe joint is generally applicable when the aperture difference between the pipe connecting hole and the threaded hole is small, and when the pipe diameter difference between the pipe connecting hole and the threaded hole is large, the sealing effect is not reliable with the help of a single sealing gasket, and the main reason is that the sealing gasket has elasticity due to the fact that the pipe diameter difference is large, the external threaded joint supports the sealing gasket tightly, and the sealing gasket cannot reliably support the pipe orifice of the corrugated pipe. In order to solve the problem, the prior art usually stops the situation when designing, namely, the pipe connecting hole and the threaded hole are guaranteed to be a reasonable pipe diameter difference value, when a small-caliber corrugated pipe is required to be butted with a large-caliber threaded joint, the mode of additionally arranging an adapter is adopted for realizing, obviously, the cost is increased more, the operation is complicated, and the use is inconvenient. For this reason, improvements to the existing corrugated pipe joints, particularly the pipe joint in which a small-caliber corrugated pipe is screwed to a large-caliber threaded joint, are desired.
Disclosure of Invention
For overcoming the above-mentioned not enough, the utility model aims at providing a bellows joint to this field, make it solve the difficult small-bore bellows that is applicable to of current like joint and change to heavy-calibre screwed joint, the switching is comparatively loaded down with trivial details, inconvenient, the higher technical problem of cost. The purpose is realized by the following technical scheme.
A corrugated pipe joint comprises a joint body and a clamping ring, wherein two sections of connecting holes are formed in the joint body, one section of the connecting holes is a pipe connecting hole connected with a corrugated pipe, the other section of the connecting holes is a threaded hole connected with an external threaded joint, the inner diameter of the threaded hole is larger than that of the pipe connecting hole, the pipe connecting hole is a stepped hole formed by a large hole section and a small hole section, namely, a first stepped surface is formed between the large hole section and the threaded hole, a second stepped surface is formed between the large hole section and the small hole section, a clamping groove embedded and clamped with the wave crest of the corrugated pipe is arranged on the inner side of the clamping ring, and the clamping ring is clamped and limited on the second stepped surface of the large hole section after clamping the corrugated pipe; the corrugated pipe sealing device is characterized in that a compression cushion block is arranged between the large hole section and the threaded hole, the compression cushion block is provided with a large ring section and a small ring section which are distributed in an annular step manner, the small ring section is in sliding fit with the large hole section of the pipe connecting hole and extends into the large hole section, a first annular sealing pad which is used for forming annular sealing between the small ring section and a corrugated pipe orifice in the pipe connecting hole is arranged in the large hole section, the large ring section is in sliding fit with the threaded hole, a second annular sealing pad which is used for forming annular sealing between the large ring section and the end part of the external threaded connector is arranged in the threaded hole, when the threaded hole is locked with the external threaded connector in a threaded manner, the large ring section and the end part of the external threaded connector tightly abut against the second annular sealing pad to form annular sealing, and the first annular sealing pad tightly abuts between the small ring section and the corrugated pipe orifice to form annular sealing. Through above-mentioned structure, utilize and compress tightly the extrusion atress that the cushion conducts first annular seal pad and second annular seal pad to first annular seal pad and the reliable compressing tightly of second annular seal pad when effectively having guaranteed the pipe diameter difference great, sealed comparatively reliable, stable. Besides, the pressing cushion block is low in cost, and is convenient to operate and use and high in efficiency.
When the small ring section of the compression cushion block abuts against the first annular sealing gasket, a gap is formed between the large ring section of the compression cushion block and the first step surface in the threaded hole. Through this structure, effectively guarantee to compress tightly the cushion and support tightly first annular seal pad and second annular seal pad simultaneously, it is more reliable to seal.
The first annular sealing gasket abuts against one side face of the small ring section of the compression cushion block, and the second annular sealing gasket abuts against one side face of the end part of the external threaded connector, wherein the side faces are both concave conical surfaces. Through the structure, the end faces of the first annular sealing gasket and the second annular sealing gasket form radial component force when being abutted tightly, so that the first annular sealing gasket and the second annular sealing gasket are abutted tightly with the inner wall of the corresponding pipe connecting hole and the inner wall of the threaded hole to form reliable sealing, namely, the sealing gaskets are axially and radially sealed, the sealing effect is further improved, and the sealing reliability is ensured.
And the end surface of the small ring section of the compression cushion block is a conical end surface which abuts against the conical surface of the first annular sealing gasket. Through this structure, it is more reliable to compress tightly the cushion and support tight first annular sealing gasket.
The pressing cushion block is a rigid body. Through this structure, compress tightly cushion non-deformable, it is more reliable to support tight sealed.
The utility model discloses overall structure easily installs and uses, effectively realizes that the minor-caliber bellows changes to the heavy-calibre screwed joint, and the switching is comparatively convenient, efficiency, and the cost is lower, is fit for as bellows attach fitting to use, or the institutional advancement that connects of the same kind.
Drawings
Fig. 1 is a schematic sectional structure diagram of the present invention.
Fig. 2 is a schematic view of the structure of the present invention in partial section in the use state.
The sequence numbers and names in the figures are: 1. the joint comprises a joint body, 101, a threaded hole, 102, a large hole section, 103, a small hole section, 104, a first step surface, 105, a second step surface, 2, a clamping ring, 3, a pressing cushion block, 301, a small ring section, 302, a large ring section, 4, a first annular sealing gasket, 5, a second annular sealing gasket, 6, a corrugated pipe, 7 and an external threaded joint.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1 and 2, the corrugated pipe joint comprises a joint body 1 and a clamping ring 2, two sections of connecting holes are formed in the joint body, one section of the connecting holes is a pipe connecting hole for connecting a corrugated pipe, the other section of the connecting holes is a threaded hole 101 for connecting an external threaded joint, the inner diameter of the threaded hole is larger than that of the pipe connecting hole, the pipe connecting hole is a stepped hole formed by a large hole section 102 and a small hole section 103, namely, a first stepped surface 104 is formed between the large hole section and the threaded hole, a second stepped surface 105 is formed between the large hole section and the small hole section, a clamping groove for clamping and stopping the crest of the corrugated pipe is arranged on the inner side of the clamping ring, and the clamping ring is clamped and stopped on the second stepped surface limited on the large hole section after clamping and stopping the corrugated pipe. The large hole section and the threaded hole are provided with a rigid compression cushion block 3, the compression cushion block is provided with a large ring section 302 and a small ring section 301 which are distributed in an annular step manner, the small ring section is in sliding fit with the large hole section of the pipe connecting hole and extends into the large hole section, a first annular sealing gasket 4 used for forming annular sealing between the small ring section and the pipe orifice of the corrugated pipe in the pipe connecting hole is arranged in the large hole section, the large ring section is in sliding fit with the threaded hole, a second annular sealing gasket 5 used for forming annular sealing between the large ring section and the end part of the external threaded joint is arranged in the threaded hole, when the threaded hole is locked with the external threaded joint in a threaded manner, the second annular sealing gasket is tightly abutted between the large ring section and the end part of the external threaded joint to form annular sealing, and the first annular sealing gasket is tightly abutted between the small ring section and the pipe orifice of the corrugated pipe to form annular sealing.
In order to further improve the sealing effect of the pipe joint, the structure can be improved as follows: in the first improvement, when the small ring section 301 of the pressing pad 3 abuts against the first annular sealing gasket 4, a gap is formed between the large ring section 302 and the first step surface 104 in the threaded hole 101. In the second improvement scheme, one side of the small ring section of the pressing cushion block pressed against by the first annular sealing gasket and one side of the end part of the external threaded connector pressed against by the second annular sealing gasket are both concave conical surfaces. Correspondingly, the end face of the small ring section of the pressing cushion block is a conical end face which abuts against the conical surface of the first annular sealing gasket.
When in use, firstly, the pipe orifice of the corrugated pipe 6 penetrates through the joint body 1, the clamping ring 2 is embedded at one wave crest of the corresponding corrugated pipe, after the corrugated pipe is embedded, the clamping ring is used for clamping and limiting the corrugated pipe on the second step surface 105 of the pipe connecting hole in the joint body, the pipe orifice of the corrugated pipe is positioned in the large hole section 102 of the pipe connecting hole, the first annular sealing gasket 4 is arranged in the large hole section and props against the pipe orifice of the corrugated pipe, then the pressing cushion block 3 is arranged in the joint body, the small ring section 301 of the pressing cushion block enters the large hole section of the pipe connecting hole and props against the first annular sealing gasket, then the second annular sealing gasket 5 is arranged in the threaded hole 101 of the joint body and props against the end surface of the large ring section 302 of the pressing cushion block, finally, the threaded hole of the joint body is locked with the external threaded joint 7, the external threaded joint props against the second annular sealing ring, and meanwhile, the pressing cushion block props against the first annular sealing ring tightly, reliable sealing between the corrugated pipe and the external threaded joint is realized.
The above contents are intended to illustrate the technical means of the present invention, and do not limit the technical scope of the present invention. Obvious modifications or substitutions for the present invention by a person of ordinary skill in the art in combination with the prior art also fall within the protection scope of the present invention.
Claims (5)
1. A corrugated pipe joint comprises a joint body (1) and a clamping ring (2), wherein two sections of connecting holes are formed in the joint body, one section of the connecting holes is a pipe connecting hole connected with a corrugated pipe (6), the other section of the connecting holes is a threaded hole (101) connected with an external threaded joint (7), the inner diameter of the threaded hole is larger than that of the pipe connecting hole, the pipe connecting hole is a stepped hole formed by a large hole section (102) and a small hole section (103), namely a first stepped surface (104) is formed between the large hole section and the threaded hole, a second stepped surface (105) is formed between the large hole section and the small hole section, a clamping groove embedded and clamped with the wave crest of the corrugated pipe is arranged on the inner side of the clamping ring, and the clamping ring is clamped and limited on the second stepped surface of the large hole section after clamping the corrugated pipe is clamped; it is characterized in that a compressing cushion block (3) is arranged between the big hole section (102) and the threaded hole, the compressing cushion block is provided with a big ring section (302) and a small ring section (301) which are distributed in an annular step, the small ring section is matched with the big hole section (102) of the pipe connecting hole in a sliding way and extends into the big hole section, a first annular sealing gasket (4) used for sealing the small ring section and the pipe orifice of the corrugated pipe in the pipe connecting hole in an annular way is arranged in the big hole section, the large ring section is in sliding fit with the threaded hole (101), a second annular sealing gasket (5) for forming annular sealing between the large ring section and the end part of the external threaded joint is arranged in the threaded hole, when the threaded hole is in threaded locking with the external threaded connector (7), the second annular sealing pad is tightly abutted between the large ring section and the end part of the external threaded connector to form annular sealing, and the first annular sealing pad is tightly abutted between the small ring section and the pipe orifice of the corrugated pipe to form annular sealing.
2. The corrugated pipe joint according to claim 1, characterized in that a gap is provided between the large ring segment (302) of the pressure pad (3) and the first step surface (104) in the threaded bore (101) when the small ring segment (301) abuts against the first annular seal (4).
3. The corrugated pipe joint according to claim 1, wherein the first annular seal (4) bears against a side of the small ring segment (301) of the pressure pad (3) and the second annular seal (5) bears against a side of the end of the external nipple (7), both being concave tapers.
4. A coupling according to claim 3, characterized in that the small ring segment (301) of the pressure packing (3) has a tapered end surface against the tapered surface of the first annular seal (4).
5. The bellows joint according to claim 1, characterized in that said pressure pad (3) is a rigid body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123452444.3U CN217328933U (en) | 2021-12-31 | 2021-12-31 | Corrugated pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123452444.3U CN217328933U (en) | 2021-12-31 | 2021-12-31 | Corrugated pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217328933U true CN217328933U (en) | 2022-08-30 |
Family
ID=82991425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123452444.3U Active CN217328933U (en) | 2021-12-31 | 2021-12-31 | Corrugated pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217328933U (en) |
-
2021
- 2021-12-31 CN CN202123452444.3U patent/CN217328933U/en active Active
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