CN204114440U - A kind of Novel sealing dirt external compression type expansion joint - Google Patents
A kind of Novel sealing dirt external compression type expansion joint Download PDFInfo
- Publication number
- CN204114440U CN204114440U CN201420569517.8U CN201420569517U CN204114440U CN 204114440 U CN204114440 U CN 204114440U CN 201420569517 U CN201420569517 U CN 201420569517U CN 204114440 U CN204114440 U CN 204114440U
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- CN
- China
- Prior art keywords
- joint
- gland
- nipple
- long pipe
- left end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of Novel sealing dirt external compression type expansion joint, it comprises long pipe, bolt, filler, gland, joint, bellows, shell, inner protective tube and nipple.The built-in inner protective tube of described nipple, nipple is tightly connected with flange and shell right output port.Bellows two ends are fixedly connected with joint respectively, and long pipe inserts to be fixedly connected with in its hole and with the coupler bore of right-hand member and forms nose balance structure.Jacket overlaps axial collocation structure and is connected with left end joint sealing.The utility model is at the external axial dust seal structure in the joint exterior edge face of left end, and the gland in this structure is connected with joint by bolt, the gap in gland endoporus groove between the dynamic collocation structure of seal ring shutoff of setting-in and static joint.The utility model structure is simple, easy to manufacture, does not both dust-proofly also affect moving axially of collocation structure, and easy to maintenance.
Description
Technical field
The utility model relates to a kind of shaft seal structure, particularly one and is located at the axial dust seal structure of external compression type expansion joint.
Background technique
External compression type expansion joint is a kind of pipe line compensating device of external bellows structure.The structure characteristic of device be bellows inwall not with transmitted medium contact, the wearing and tearing do not produced with medium relative movement, certainly medium or impurity plug is not had to block up the condition of crest in bellows yet, therefore, external compression type expansion joint have that nose balance is flexible, the feature such as the large and long service life of compensation rate.External compression type expansion joint is used widely in industrial pipe network, mainly has benefited from the beneficial effect that above feature is brought.However, prior art products is only adapted at the comparatively clean occasion of environment and uses, for environment facies to poor, the occasion that particularly dust is larger along with time history using effect worse and worse, even cause the damage of institute's pipe arrangement net because nose balance is malfunctioning.Cause the main cause that prior art products is malfunctioning, there is larger gap between dynamic collocation structure and static joint, bellows inner chamber is communicated with the external world, dust in environment passes through cold-hot air convection, from above gap, enter bellows inner chamber and be adsorbed on inwall, after the dust of long-term accumulation or impurity become dirt, significantly reduce bellows elastic deformability.
Model utility content
The utility model, mainly for the deficiencies in the prior art, proposes that a kind of structure is simple, good dustproof effect, a kind of Novel sealing dirt external compression type expansion joint easy to manufacture and easy to maintenance.
The utility model is achieved through the following technical solutions technical goal.
A kind of Novel sealing dirt external compression type expansion joint, it comprises long pipe, bolt, filler, gland, joint, bellows, shell, inner protective tube and nipple.Described nipple female coaxial is fixedly connected with tubaeform inner protective tube and forms flow guide structure, and nipple is tightly connected integral with flange and cylindrical housing right output port.Described bellows two ends are fixedly connected with the joint of flange towards outside respectively, and long pipe inserts to be fixedly connected with in its hole and with the coupler bore of right-hand member and forms nose balance structure, and jacket overlaps axial collocation structure and is connected with the flange seal of left end joint.Its improvements are: the joint exterior edge face of described left end coaxially connects gland by bolt, and gland endoporus is provided with groove embedded sealing ring, and the seal ring coordinated with long pipe outer wall forms the axial dust seal structure in gap between left end coupler bore and long pipe outer wall.
Seal ring in said structure is rubber mass Sealing.
The utility model compared with prior art, has following good effect:
1, external sealing configuration is simple, easy to manufacture, and easy to maintenance;
2, the gap between the dynamic collocation structure of seal ring shutoff and static joint, does not both dust-proofly affect moving axially of collocation structure yet;
3, due to the existence of seal ring, reduce and coordinate rotten damage, effectively improve collocation structure working environment, thus improve working life.
Accompanying drawing explanation
Accompanying drawing is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
A kind of Novel sealing dirt external compression type expansion joint shown in the drawings, it comprises long pipe 1, bolt 2, filler 3, gland 4, joint 5, bellows 6, shell 7, inner protective tube 8 and nipple 9.Nipple 9 endoporus being positioned at right-hand member is fixedly connected with tubaeform inner protective tube 8 and forms flow guide structure, and nipple 9 is tightly connected integral with flange and cylindrical housing 7 right output port.Elastic element bellows 6 two ends are fixedly connected with the joint 5 of flange towards outside respectively, long pipe 1 inserts to be fixedly connected with in its hole and with joint 5 endoporus of right-hand member and forms nose balance structure, nose balance structure is inserted from the left end hole of shell 7, joint 5 flange of left end and shell 7 left port are tightly connected, connect and compose external compression type expansion joint by above-mentioned.The utility model sets up axial dust seal structure outside the left end joint 5 of external compression type expansion joint, with the gap between the dynamic collocation structure of this shutoff and static joint 5, prevent dust or impurity from entering bellows 6 inner chamber, avoid that incrustation occurs and cause bellows 6 elastic deformability to decline.External axial dust seal structure, is made up of the seal ring 3 being located at setting-in in gland 4 and gland 4 endoporus groove that left end joint 5 exterior edge face coaxially connects with bolt 2.
Axial dust seal structure external in the utility model, structure is simple, easy to manufacture, does not both dust-proofly also affect moving axially of collocation structure, and safeguards easily.
Claims (2)
1. a Novel sealing dirt external compression type expansion joint, it comprises long pipe (1), bolt (2), filler (3), gland (4), joint (5), bellows (6), shell (7), inner protective tube (8) and nipple (9); Described nipple (9) female coaxial is fixedly connected with tubaeform inner protective tube and forms flow guide structure, and nipple (9) is tightly connected integral with flange and cylindrical housing (7) right output port; Described bellows (6) two ends are fixedly connected with the joint (5) of flange towards outside respectively, long pipe (1) inserts to be fixedly connected with in its hole and with joint (5) endoporus of right-hand member and forms nose balance structure, and shell (7) enclosure nose balance structure is also connected with the flange seal of left end joint (5); It is characterized in that: joint (5) exterior edge face of described left end coaxially connects gland (4) by bolt (2), gland (4) endoporus is provided with groove embedded sealing ring (3), and the seal ring (3) coordinated with long pipe (1) outer wall forms the axial dust seal structure in gap between left end joint (5) endoporus and long pipe (1) outer wall.
2. a kind of Novel sealing dirt external compression type expansion joint according to claim 1, is characterized in that: described seal ring (3) is rubber mass Sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569517.8U CN204114440U (en) | 2014-09-30 | 2014-09-30 | A kind of Novel sealing dirt external compression type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420569517.8U CN204114440U (en) | 2014-09-30 | 2014-09-30 | A kind of Novel sealing dirt external compression type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204114440U true CN204114440U (en) | 2015-01-21 |
Family
ID=52331751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420569517.8U Expired - Fee Related CN204114440U (en) | 2014-09-30 | 2014-09-30 | A kind of Novel sealing dirt external compression type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204114440U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850247A (en) * | 2015-07-09 | 2018-03-27 | 保尔伍斯股份有限公司 | FlexbleJoint |
| CN109058641A (en) * | 2018-09-13 | 2018-12-21 | 江苏永昌膨胀节有限公司 | A kind of axial corrugated expansion joint |
| CN112682605A (en) * | 2020-12-30 | 2021-04-20 | 中国电建集团河南省电力勘测设计院有限公司 | Direct-buried corrugated pipe compensator with adjustable connecting pipe installation gradient |
-
2014
- 2014-09-30 CN CN201420569517.8U patent/CN204114440U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107850247A (en) * | 2015-07-09 | 2018-03-27 | 保尔伍斯股份有限公司 | FlexbleJoint |
| CN107850247B (en) * | 2015-07-09 | 2019-06-28 | 保尔伍斯股份有限公司 | FlexbleJoint |
| CN109058641A (en) * | 2018-09-13 | 2018-12-21 | 江苏永昌膨胀节有限公司 | A kind of axial corrugated expansion joint |
| CN112682605A (en) * | 2020-12-30 | 2021-04-20 | 中国电建集团河南省电力勘测设计院有限公司 | Direct-buried corrugated pipe compensator with adjustable connecting pipe installation gradient |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20150930 |
|
| EXPY | Termination of patent right or utility model |