CN201475542U - Sealing structure of pipe joint - Google Patents
Sealing structure of pipe joint Download PDFInfo
- Publication number
- CN201475542U CN201475542U CN2009201930695U CN200920193069U CN201475542U CN 201475542 U CN201475542 U CN 201475542U CN 2009201930695 U CN2009201930695 U CN 2009201930695U CN 200920193069 U CN200920193069 U CN 200920193069U CN 201475542 U CN201475542 U CN 201475542U
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- China
- Prior art keywords
- pipe joint
- ring
- packing ring
- sealing structure
- connection end
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 31
- 238000012856 packing Methods 0.000 claims description 37
- 230000000694 effects Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004080 punching Methods 0.000 description 11
- 238000010276 construction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000013475 authorization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010587 phase diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
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Abstract
A sealing structure of a pipe joint comprises a pipe joint body, a screw nut and a gasket, wherein the pipe joint body is provided with a connection end part, external threads matched with inner threads of the screw nut for threaded connection are formed on the outer side of the connection end part, and a ring-shaped groove for accommodating the gasket is formed in the middle of the connection end part. The sealing structure is characterized in that the gasket is in tight fit with the interior of the ring-shaped groove. Compared with the prior art, the sealing structure has the advantages that the gasket is in tight fit with the interior of the ring-shaped groove to achieve certain sealing effect; and the structure can avoid the damage of a seal ring caused by all-directional movements of the gasket during the rotational progression of the screw nut, thereby further improving the leak tightness.
Description
Technical field
The utility model relates to a kind of pipe joint sealing structure, relates in particular to a kind of sealing configuration that has packing ring, belongs to the pipe joint technical field.
Background technique
Traditional pipe joint is generally two pipe butt joints, screw with the nut that carries on one of them pipe then, and by control connection end face and screw thread geometric accuracy, sub-gasket compound rubber seal ring seals, concrete structure as shown in Figure 1, pipe joint sealing structure comprises pipe joint body 1a, screw nut 2a, seal ring 3a and packing ring 4a, pipe joint body 1a has the end 11a of connection, this connection end 11a outside forms and screws the outside thread that the screw-internal thread fit of nut 2a is spirally connected, and, forming an annular groove 12a for packing ring 4a and seal ring 3a setting in the middle of the connection end 11a (cries again: the sealing distance), because of packing ring 4a will be by connecting the head 13a of end, so the internal diameter of packing ring 4a is than next big of annular groove 12a radial length, when screwing nut 2a rotation and go forward one by one, packing ring 4a easily about, play up and down, easily cause seal ring 3a wearing and tearing, and then influence sealing effect, seriously cause the leakage of fluid pressure effect lower interface place, thereby can't satisfy seal request.
For this reason, the technician has done a lot of improvement on enhanced leaktightness, as the patent No. is Chinese utility model patent " spinning sealing extruding fastening-type the pipe joint " (notice of authorization number: CN2447606Y) of ZL00255800.9, this patent comprises joint body, spiral cover and conical seal ring, and the spiral cover inwall is provided with ring ladder; The end face of ring ladder contacts with the wide end surface of seal ring, and the narrow end surface of seal ring contacts with conical seal ring; Be the taper anchor ring between ring ladder and the spiral cover interior edge face, this taper anchor ring cooperates with snap ring, and snap ring does not contact with seal ring.Said structure is separated sealing sealing function that extrusion produced and the snap ring locating function that is arranged on the pipeline.Pipeline connects reliable, and sealability is improved.And for example:, as the patent No. is Chinese utility model patent " compensation high sealing the pipe joint " (notice of authorization number: CN201190856Y) of ZL200820115255.2, this comprises pipe joint body, seal ring, locking ring, tightening nut and packing ring, described locking ring is located in the taper hole of tightening nut, the locking ring endoporus is smooth, and cylindrical is a sphere, and axially open is arranged, the radial side that the pipe joint body end is installed the cone shape hole of seal ring is the plane, and axial sides is a conical surface.Sealing also increases.
Though a lot of improved pipe seals at present make moderate progress, but structural design is comparatively complicated, and product changes more to traditional pipe joint, and component machine shaping comparatively bothers, succinct inadequately, develop that a kind of to process pipe joint quick, that sealing is good imperative.
The model utility content
First technical problem to be solved in the utility model be provide at the above-mentioned state of the art a kind of easy to process, sealing is tight and can not cause the pipe joint sealing structure of damage to seal ring.
The utility model solves the problems of the technologies described above the technological scheme that is adopted: a kind of pipe joint sealing structure, comprise the pipe joint body, screw nut and packing ring, the aforementioned tubes joint body has the connection end, this outside, connection end forms the outside thread that is spirally connected with the aforementioned screw-internal thread fit that screws nut, and, form an annular groove for the packing ring setting in the middle of this connection end, it is characterized in that described packing ring tightly fits in the described annular groove.
Be further enhanced leaktightness, described packing ring one side is provided with a seal ring, and the sealing circle tightly fits in the described annular groove.
Compared with prior art, advantage of the present utility model is: because packing ring tightly fits in the annular groove, played certain seal action, moreover, when screwing nut rotation and go forward one by one, play and damaged seal ring up and down about packing ring is not understood, thereby further improved sealing, in addition, less to existing sealing configuration change, be suitable for penetration and promotion.Of the present utility modelly add man-hour, as long as punching press can be finished assembling, the processing and assembling simple and fast need not other extra component and comes enhanced leaktightness, and input cost is comparatively cheap.
Description of drawings
Fig. 1 is existing pipe joint sealing structure schematic representation.
Fig. 2 is the second press tool structural representation.
Fig. 3 is that second press tool separates constitutional diagram.
Fig. 4 is the structural representation of packing ring blank.
Fig. 5 is the variation gasket construction schematic representation after the impact briquetting.
Fig. 6 is the sectional view of Fig. 5.
Fig. 7 is the first press tool structural representation.
Fig. 8 is that first press tool separates constitutional diagram.
Fig. 9 is the plan view of first counterdie among Fig. 7.
Magnifying state figure before the pipe joint punching press among Figure 10 Fig. 8.
Figure 11 is phase diagram after the pipe joint punching press.
Figure 12 is for installing phase diagram behind the seal ring additional.
Figure 13 is 22.5 ° variation gasket construction schematic representation for bus and axis.
Figure 14 is 45 ° variation gasket construction schematic representation for bus and axis.
Figure 15 is 30 ° variation gasket construction schematic representation for bus and axis.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
The processing method of the pipe joint sealing structure in the present embodiment comprises the steps:
1., as Fig. 8 and shown in Figure 10, get a pipe joint (pipe joint in the present embodiment is a tee union), this pipe joint comprises pipe joint body 1 and screws nut 2, pipe joint body 1 has the end 11 of connection, the outside thread that the screw-internal thread fit that these 11 outsides, connection end formed and screwed nut 2 is spirally connected, and, form an annular groove 12 in the middle of this connection end 1, then a variation packing ring 4 is inserted in the annular groove 12 that connects the end, variation packing ring 4 internal diameters are radially long greater than the threaded end that connects end 11;
2., as shown in figure 11, the pipe joint that is arranged with variation packing ring 4 is arranged in one first press tool and finishes punching press, the variation packing ring 4 after the punching press becomes smooth, and internal diameter shrinks and tightly fits in the annular groove 12 and can play;
3., as shown in figure 12, at last a seal ring 12 is sheathed in the annular groove 12 and and closely offsets, promptly finish the sealing assembling with variation packing ring 4.
As shown in Figure 5 and Figure 6, variation packing ring 4 is shaped to the side of a round platform, and the angle of the axle of the bus of round platform and round platform is 37.5 ° in the round table-like variation packing ring 4, and promptly the angle of two symmetrical buses is 75 °.
As Fig. 7～shown in Figure 8, first press tool comprises first counterdie 9 and first patrix 8, first counterdie 9 has 1 laterally inserted cavity 91 and the confession of confession pipe joint body and screws the upper-end surface that nut 2 is affiliated to, first patrix, 8 bottoms have a stamping surface 82, these stamping surface 82 middle parts form the groove 81 that stretches into for the connection end 11 of pipe joint body, after pipe joint body 1 is inserted in first counterdie 9, screw cavity 91 ports that nut 2 is hung on first counterdie, variation packing ring 4 is positioned at then that to screw nut 2 upsides to be punched.Cavity 91 longitudinal lengths of first counterdie make pipe joint body 1 hang on first counterdie 9 and expose to screw nut 2 because of the longitudinal length below the nut of screwing greater than the pipe joint body.
As shown in Figure 3, variation packing ring 4 adopts smooth packing ring blank 7 to make by one second press tool punching press, packing ring blank 7 has mesopore 71, thickness is the variation packing ring 4 after smooth less times greater than punching press, with reference to figure 2 and Fig. 4, second press tool comprises second patrix 5 and second counterdie 6, second patrix 5 has the elongated portion 51 to lower convexity, these elongated portion 51 roots have the radially intilted of annular and top bar 52, second counterdie 6 has the hollow cavity that stretches into for elongated portion 51, this hollow cavity port 52 forming tank of coincideing that form and top bar, under the impact briquetting state, 7 of packing ring blanks are located in this forming tank.
The variation packing ring in the present embodiment 4 is owing to thereby the contraction of internal diameter before and after the punching press can tightly fit in the annular groove 12, and obtains sealing effect.Because of actual demand, internal diameter front and back variable quantity size can be determined by round table-like variation packing ring 4 median generatrixs and the angle of axle before and after the punching press, variation packing ring median generatrix as shown in figure 13 is 22.5 ° with the angle of axle, variation packing ring median generatrix as shown in Figure 14 is 45 ° with the angle of axle, and variation packing ring median generatrix as shown in figure 15 is 30 ° with the angle of axle.In addition, owing to will pass through the secondary punching press, could guarantee sealing setting, so the packing ring blank generally selects the preferable alloy of ductility to satisfy the punching press deformation requirements.
Claims (2)
1. pipe joint sealing structure, comprise the pipe joint body, screw nut and packing ring, the aforementioned tubes joint body has the connection end, this outside, connection end forms the outside thread that is spirally connected with the aforementioned screw-internal thread fit that screws nut, and, form an annular groove for the packing ring setting in the middle of this connection end, it is characterized in that described packing ring tightly fits in the described annular groove.
2. pipe joint sealing structure according to claim 1 it is characterized in that described packing ring one side is provided with a seal ring, and the sealing circle tightly fits in the described annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201930695U CN201475542U (en) | 2009-08-27 | 2009-08-27 | Sealing structure of pipe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201930695U CN201475542U (en) | 2009-08-27 | 2009-08-27 | Sealing structure of pipe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201475542U true CN201475542U (en) | 2010-05-19 |
Family
ID=42411792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201930695U Expired - Fee Related CN201475542U (en) | 2009-08-27 | 2009-08-27 | Sealing structure of pipe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201475542U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639143B (en) * | 2009-08-27 | 2011-06-29 | 奉化市汇仁汽车部件制造有限公司 | Processing method of pipe joint sealing structure |
-
2009
- 2009-08-27 CN CN2009201930695U patent/CN201475542U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101639143B (en) * | 2009-08-27 | 2011-06-29 | 奉化市汇仁汽车部件制造有限公司 | Processing method of pipe joint sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: FENGHUA HUIREN AUTO PARTS MANUFACTURING CO., LTD. Free format text: FORMER OWNER: TONG ZHONGLIANG Effective date: 20101124 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315505 FENGHUA HUIREN AUTO PARTS MANUFACTURING CO., LTD., NO.46, XINING ROAD, XIWU TOWN, FENGHUA CITY, ZHEJIANG PROVINCE TO: 315505 NO.46, XINING ROAD, XIWU TOWN, FENGHUA CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20101124 Address after: Xining Lu Xi Wu Zhen Zhejiang city of Fenghua province No. 46 315505 Patentee after: Fenghua Huiren Automobile Parts Manufacture Co., Ltd. Address before: Xining Lu Xi Wu Zhen 315505 Zhejiang city of Fenghua province No. 46 Fenghua Huiren Auto Parts Manufacturing Co. Ltd. Patentee before: Tong Zhongliang |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140827 |
|
| EXPY | Termination of patent right or utility model |