CN211083171U - Connecting and sealing structure of pipe fitting - Google Patents
Connecting and sealing structure of pipe fitting Download PDFInfo
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- CN211083171U CN211083171U CN201921880954.0U CN201921880954U CN211083171U CN 211083171 U CN211083171 U CN 211083171U CN 201921880954 U CN201921880954 U CN 201921880954U CN 211083171 U CN211083171 U CN 211083171U
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- 238000007789 sealing Methods 0.000 title claims abstract description 52
- 230000000670 limiting effect Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a connecting and sealing structure of a pipe fitting, which comprises a first pipe body, a second pipe body and a sealing framework; one end of the first pipe body is sequentially provided with an inclined guide part and a horizontal flaring part, and the second pipe body is inserted into the first pipe body along the flaring part; the sealing framework is connected in a cavity formed by the inner wall of the flared part and the outer wall of the second pipe body, sealing rings are arranged on the outer side face and the inner side face of the sealing framework, and the sealing rings are in jacking connection with the inner wall of the guide part, the inner wall of the flared part and the outer wall of the second pipe body. A connection seal structure of pipe fitting, sealing performance is good, the structure is nimble.
Description
Technical Field
The utility model relates to a pipe fitting connection structure especially relates to a connection seal structure of pipe fitting.
Background
In actual construction work, two pipe fittings are often required to be connected to meet the use requirement. When connecting two pipelines with different diameters, one end of the pipe fitting with a smaller diameter is inserted into one end of the pipe fitting with a larger diameter, and a seal is arranged at the joint. In the prior art, O-shaped sealing rings are mostly adopted for sealing; the sealing form is simple, when the pressure of the medium in the pipeline rises, the leakage condition can occur at the joint of the pipe fittings, and the reliability is low.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the not enough of existence among the prior art, the utility model provides a connection seal structure of pipe fitting to guarantee the leakproofness between the interconnect pipe fitting.
The technical scheme is as follows: in order to achieve the purpose, the utility model discloses a connecting and sealing structure of a pipe fitting, which comprises a first pipe body, a second pipe body and a sealing framework; one end of the first pipe body is sequentially provided with an inclined guide part and a horizontal flaring part, and the second pipe body is inserted into the first pipe body along the flaring part; the sealing framework is connected in a cavity formed by the inner wall of the flared part and the outer wall of the second pipe body, sealing rings are arranged on the outer side face and the inner side face of the sealing framework, and the sealing rings are in jacking connection with the inner wall of the guide part, the inner wall of the flared part and the outer wall of the second pipe body.
Furthermore, the sealing framework is provided with a conical surface matched with the guide part and a cylindrical surface matched with the flaring part, sealing grooves are formed in the conical surface and the cylindrical surface, and the sealing ring is arranged in the sealing groove.
Furthermore, one end of the first pipe body is connected with a fastening bolt, one end of the second pipe body is connected with a fastening nut, and the first pipe body and the second pipe body are fixedly connected through the matching of the fastening bolt and the fastening nut.
Furthermore, the fastening nut is provided with a stepped inner hole, the large-diameter part of the inner hole is screwed with the fastening bolt, the end part of the sealing framework is provided with a limiting bulge, and the stepped end surface of the inner hole is in jacking connection with the limiting bulge.
Further, the inner hole is provided with a conical part, the conical part is communicated with the small-diameter part of the inner hole, an anti-pulling ring is sleeved on the second pipe body and arranged in the inner hole, and the anti-pulling ring slides along the axial direction under the driving of the second pipe body to enable the anti-pulling ring to be in abutting contact with the conical part.
Furthermore, a groove is formed in the second pipe body, and the anti-pulling ring is provided with an opening and is clamped in the groove
Has the advantages that: the utility model discloses a connection seal structure of pipe fitting, at first pipe fitting be provided with guide part and flaring portion, the sealed skeleton roof pressure is in the cavity that flaring portion inner wall and second body outer wall are constituteed through fastening nut roof pressure to form twice through the sealing washer on the sealed solid frame respectively with guide part and flaring portion and seal, guaranteed sealed reliability; simultaneously be provided with the toper portion in fastening nut, be connected with the resistance to plucking ring on the second pipe fitting, the resistance to plucking ring makes the second pipe fitting can relative movement in first pipe fitting, and then the length after first pipe fitting and the second pipe fitting are connected can be adjusted to a certain extent, and is more nimble.
Drawings
FIG. 1 is a structural sectional view of the present invention;
fig. 2 is a schematic structural view of a portion a of fig. 1.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
The connecting and sealing structure of the pipe fittings shown in the attached figures 1 to 2 comprises a first pipe body 1, a second pipe body 2 and a sealing framework 3; the outer wall diameter of second body 2 slightly is less than the internal diameter of first body 1 to guarantee that second body 2 can insert the inside of first body 1. The connecting end part of the first pipe body 1 is sequentially provided with a guide part 4 and a flared part 5, the guide part 4 is a conical surface, the flared part 5 is a cylindrical surface, and the inner diameter of the flared part 5 is larger than the main body inner diameter of the first pipe body 1. The inner wall of flaring portion 5 and the outer wall of second body 2 form a cavity, sealed skeleton 3 set up in the cavity. The sealing framework 3 is provided with a conical surface matched with the guide part 4 and a cylindrical surface matched with the flaring part 5, the sealing framework 3 is provided with three sealing rings 6 which are respectively arranged on the conical surface matched with the guide part 4, the cylindrical surface matched with the flaring part 5 and an inner hole on the sealing framework, so that the sealing with the inner wall of the first pipe body 1 and the outer wall of the second pipe body 2 is completed. The sealing ring is an O-shaped sealing ring, a groove is formed in the sealing framework 3, and the three sealing rings are arranged in the groove.
One end of the first pipe body 1 is connected with a fastening bolt 7, the end part of an inner hole of the fastening bolt 7 is matched with the guide part 4 and the flaring part 5, and the outer surface of the fastening bolt 7 is provided with threads. The cover of second body 2 is established and is connected with fastening nut 8, fastening nut 8 has the hole 9 of stairstepping, the major diameter part of hole 9 sets up in having the internal thread, the major diameter part and the fastening nut 8 cooperation of hole 9 are connected. One side of the sealing framework 3 close to the flaring portion is provided with a limiting bulge 10, and the stepped surface of the fastening nut 8 is pressed on the sealing framework 3, so that the sealing framework is fixed. Notably, when the sealing framework is pressed and fixed by the stepped surface of the inner hole 9, the limiting protrusion 10 is ensured not to contact with the end of the flared part 5, so as not to affect the sealing effect of the sealing ring.
The inner bore 9 is further provided with a tapered portion 11, the tapered portion 11 communicating with a small diameter portion of the inner bore 9. The connecting end of the second pipe body 2 is provided with a groove, the anti-pulling ring 12 is clamped in the groove, and the anti-pulling ring 12 is arranged in the conical part 11. The anti-pulling ring 12 is driven by the second pipe body 2 to slide along the axial direction, so that the anti-pulling ring 12 is pressed and contacted with the conical part 11. Due to the limiting effect of the anti-pulling ring 12, the length of the first pipe body 1 can be changed to a certain extent after the first pipe body and the second pipe body 2 are connected, so that the first pipe body and the second pipe body are more flexible.
The above description is only a preferred embodiment of the present invention, and it should be noted that: for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (6)
1. The utility model provides a connection seal structure of pipe fitting which characterized in that: comprises a first pipe body (1), a second pipe body (2) and a sealing framework (3); one end of the first pipe body (1) is sequentially provided with an inclined guide part (4) and a horizontal flared part (5), and the second pipe body (2) is inserted into the first pipe body (1) along the flared part (5); the sealing framework (3) is connected in a cavity formed by the inner wall of the flaring portion (5) and the outer wall of the second pipe body (2), sealing rings (6) are arranged on the outer side face and the inner side face of the sealing framework (3), and the sealing rings (6) are connected with the inner wall of the guide portion (4), the inner wall of the flaring portion (5) and the outer wall of the second pipe body (2) in a jacking mode.
2. A connecting seal structure of pipe fittings according to claim 1, wherein: the sealing framework (3) is provided with a conical surface matched with the guide part (4) and a cylindrical surface matched with the flaring part (5), sealing grooves are formed in the conical surface and the cylindrical surface, and the sealing ring (6) is arranged in the sealing groove.
3. A connecting seal structure of pipe fittings according to claim 1, wherein: the one end of first body (1) is connected with fastening bolt (7), the one end of second body (2) is connected with fastening nut (8), first body (1) and second body (2) are connected fixedly through the cooperation of fastening bolt (7) and fastening nut (8).
4. A connecting seal structure of pipe fittings according to claim 3, wherein: fastening nut (8) have hole (9) of stairstepping, the major diameter portion of hole (9) connects with fastening bolt (7) soon, sealed skeleton (3) tip is provided with spacing arch (10), the ladder terminal surface and the spacing arch (10) roof pressure of hole (9) are connected.
5. The connecting and sealing structure of pipe fittings according to claim 4, wherein: hole (9) still are provided with toper portion (11), toper portion (11) communicate with each other with the path part of hole (9), the cover is equipped with anti-pulling ring (12) on second body (2), anti-pulling ring (12) set up in hole (9), anti-pulling ring (12) cause anti-pulling ring (12) and toper portion (11) to support the pressure contact along axial sliding under the drive of second body (2).
6. The connecting and sealing structure of pipe fittings according to claim 5, wherein: the second pipe body (2) is provided with a groove, and the anti-pulling ring (12) is provided with an opening and is clamped in the groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921880954.0U CN211083171U (en) | 2019-11-04 | 2019-11-04 | Connecting and sealing structure of pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921880954.0U CN211083171U (en) | 2019-11-04 | 2019-11-04 | Connecting and sealing structure of pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211083171U true CN211083171U (en) | 2020-07-24 |
Family
ID=71645329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921880954.0U Active CN211083171U (en) | 2019-11-04 | 2019-11-04 | Connecting and sealing structure of pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211083171U (en) |
-
2019
- 2019-11-04 CN CN201921880954.0U patent/CN211083171U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |