CN205013906U - Better straight tube attach fitting of leakproofness - Google Patents
Better straight tube attach fitting of leakproofness Download PDFInfo
- Publication number
- CN205013906U CN205013906U CN201520775154.8U CN201520775154U CN205013906U CN 205013906 U CN205013906 U CN 205013906U CN 201520775154 U CN201520775154 U CN 201520775154U CN 205013906 U CN205013906 U CN 205013906U
- Authority
- CN
- China
- Prior art keywords
- straight tube
- outer nut
- base
- snap ring
- fastening snap
- 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 relates to an engine exhaust pollution control field especially relates to a catalyst converter and draws tracheal connection structure. A better straight tube attach fitting of leakproofness, the straight tube attach fitting includes base, fastening snap ring and outer nut, and one end that base and straight tube are connected has an external screw thread, the external screw thread closes with the interior thread to match of outer nut, and the fastening snap ring is located between base and the outer nut, and fastens between snap ring and base and the outer nut all sealedly with conical contact to can fix the link at the straight tube by the chucking. The straight tube attach fitting does not need expander technology when the assembly, it is easier to assemble, and does not destroy the intensity of straight tube, and zonulae occludens between outer nut and fastening snap ring and the base has realized good sealing up simultaneously.
Description
Technical field
The utility model relates to engine exhaust Environmental capacity field, particularly relates to the linkage structure of a kind of catalyst converter and air entraining pipe.
Background technique
Catalyst converter is the main tool solving engine exhaust control problem at present, and it is one of Main Means of prevention and cure of air pollution that engine exhaust controls, and therefore, the stuctures and properties optimizing and improve catalyst converter is the important directions of pollution control research.At present, also there are some problems in the stuctures and properties of catalyst converter.Catalyst converter is the waste gas for the treatment of engine exhaust, and in view of gas is easily revealed, structurally requirement must have good sealing, especially the structure of exhaust-gas flow process on catalyst converter airintake direction.But catalyst converter main body is connected with air entraining pipe is now generally all fixed by screw thread, this linkage structure is difficult to ensure to meet its requirement to sealing.If it is improper to seal, can directly affect catalyzed conversion effect, produce Leakage Gas, affect the use of product, also be unfavorable for that air-polluting is administered simultaneously.
At present, market has occurred the linkage structure between a kind of catalyst converter main body of expander structure and air entraining pipe, this linkage structure is ensure enough sealings, by the linkage section expander of air entraining pipe, and puts an outer nut outside.When connecting, the enlarged tube portion of air entraining pipe being contacted with catalyst converter main body, and screws outer nut, like this active force being directly acted on expander place, utilizing expander to be stuck in joint by air entraining pipe, contact sealing.But this linkage structure directly increases the difficulty of Joining Technology processing, also reduces the intensity of air entraining pipe simultaneously.
Therefore, design and improvement pipe connecting structure, take into account high leak tightness, excellent mechanical performances and low Joining Technology difficulty, be those skilled in the art's technical issues that need to address simultaneously.
Model utility content
In view of there is above-mentioned technical problem in prior art, the utility model provides a kind of straight tube jointing of better tightness, this jointing can be used for straight tube and connect, it adopts fastener ring structure to substitute expander, do not change straight tube structure, the intensity of air entraining pipe can not be had influence on, also do not increase technology difficulty, meanwhile, fastener environmental protection card screws the sealing after outer nut between straight tube and joint base.The utility model have employed following technological scheme.
Straight tube jointing described in the utility model, comprise base, fastening snap ring and outer nut, one end that base is connected with straight tube has outside thread, described outside thread matches with the internal thread of outer nut, fastening snap ring is between base and outer nut, and fastening snap ring and all sealing with taper-face contact between base and outer nut, and the connecting end being fixed on straight tube can be clamped.
Structurally, main change is between outer nut and base, increase fastening snap ring to the utility model, utilizes fastening snap ring to substitute air entraining pipe expander.In the technical solution of the utility model, base is the connection transition portion between straight tube, and fastening snap ring, outer nut are the supplementary structures ensureing degree of being connected firmly and sealing.On the one hand fastening snap ring is by fixing for straight tube clamping, screws outer nut on the other hand by outer nut, be tightly connected between fastening snap ring and base, makes described straight tube jointing, guarantee that straight tube can not come off, and ensures the soundness that connects and sealing.
When using described straight tube jointing, first straight tube is inserted outer nut one end of described straight tube jointing, firmly rotate outer nut, outer nut by force transmission on fastening snap ring, the vertical active force of fastening snap ring is by fastening snap ring and base clamping, straight tube is tightly stuck in described straight tube jointing by the horizontal applied force of fastening snap ring, not only solve the sealing problem of connection like this, ensure that degree of being connected firmly, simultaneously, eliminate the expander technique of straight tube, solve technique assembly problem, technique is assembled easier, and do not destroy the intensity of straight tube.When described straight tube jointing is used for the connection of air entraining pipe and catalyst converter, air entraining pipe is equivalent to above-mentioned straight tube.
Straight tube jointing described in the utility model is not only applicable to the connection between air entraining pipe and catalyst converter, also can be used for the situation that other straight tube connects.
Straight tube jointing described in the utility model has following beneficial effect: 1, do not need expander technique when assembling, and assembling is easier, and does not destroy the intensity of straight tube; 2, screw outer nut, make fastening snap ring and compact siro spinning technology between outer nut and base, achieve good sealing.
Accompanying drawing explanation
Fig. 1 is the straight tube jointing schematic diagram of catalyst converter described in the utility model.
In figure, 1 is straight tube jointing, and 2 is base, and 3 is fastening snap ring, and 4 is outer nut, and 5 is straight tube (air entraining pipe).
Embodiment
Illustrate that this uses novel technological scheme below in conjunction with specific embodiments and the drawings, wherein, Fig. 1 is the straight tube jointing schematic diagram of catalyst converter described in the utility model.
Straight tube jointing 1 as shown in the figure, comprise base 2, fastening snap ring 3 and outer nut 4, one end that base 2 is connected with straight tube 5 has outside thread, described outside thread matches with the internal thread of outer nut 4, fastening snap ring 3 is between base 2 and outer nut 4, and fastening snap ring 3 and all sealing with taper-face contact between base 2 and outer nut 4, and the connecting end being fixed on straight tube 5 can be clamped.
When the straight tube jointing 1 shown in Fig. 1 is used for the connection between air entraining pipe and catalyst converter, air entraining pipe of telling is equivalent to straight tube 5.Concrete assembly process is: first insert in straight tube SEALING FITTING 1 by straight tube (air entraining pipe) 5, firmly rotate outer nut 4, outer nut 4 by force transmission on fastening snap ring 3, fastening snap ring 3 and base 2 clamp by the vertical active force of fastening snap ring 3, and air entraining pipe 5 is tightly stuck in straight tube SEALING FITTING 1 by the horizontal applied force of fastening snap ring 3.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, every technological thought proposed according to the present invention, and any change that technological scheme basis is done, all falls within scope; The technology that the present invention does not relate to all is realized by prior art.
Claims (1)
1. the straight tube jointing of a better tightness, it is characterized in that, described straight tube jointing comprises base, fastening snap ring and outer nut, one end that base is connected with straight tube has outside thread, described outside thread matches with the internal thread of outer nut, fastening snap ring is between base and outer nut, and fastening snap ring and all sealing with taper-face contact between base and outer nut, and the connecting end being fixed on straight tube can be clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775154.8U CN205013906U (en) | 2015-10-08 | 2015-10-08 | Better straight tube attach fitting of leakproofness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520775154.8U CN205013906U (en) | 2015-10-08 | 2015-10-08 | Better straight tube attach fitting of leakproofness |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205013906U true CN205013906U (en) | 2016-02-03 |
Family
ID=55212509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520775154.8U Expired - Fee Related CN205013906U (en) | 2015-10-08 | 2015-10-08 | Better straight tube attach fitting of leakproofness |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205013906U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715879A (en) * | 2016-03-02 | 2016-06-29 | 浙江天庆管业有限公司 | Anti-looseness connection structure for pipeline |
| CN105737250A (en) * | 2016-03-31 | 2016-07-06 | 安徽汇展热交换系统股份有限公司 | Vent pipe assembly for radiator |
| CN112555549A (en) * | 2020-12-17 | 2021-03-26 | 江西五十铃汽车有限公司 | High-tightness connecting device for ventilating hard tube |
-
2015
- 2015-10-08 CN CN201520775154.8U patent/CN205013906U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715879A (en) * | 2016-03-02 | 2016-06-29 | 浙江天庆管业有限公司 | Anti-looseness connection structure for pipeline |
| CN105715879B (en) * | 2016-03-02 | 2019-02-22 | 浙江天庆管业有限公司 | A kind of anti-loosing connecting structure of pipeline |
| CN105737250A (en) * | 2016-03-31 | 2016-07-06 | 安徽汇展热交换系统股份有限公司 | Vent pipe assembly for radiator |
| CN112555549A (en) * | 2020-12-17 | 2021-03-26 | 江西五十铃汽车有限公司 | High-tightness connecting device for ventilating hard tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 708, room 100, Haitong building, No. 211106, Qinhuai Road, Jiangning District, Jiangsu, Nanjing Patentee after: According to the Nanjing Kekate emission technology Limited by Share Ltd Address before: 708, room 100, Haitong building, No. 211106, Qinhuai Road, Jiangning District, Jiangsu, Nanjing Patentee before: NANJING YIKE KATE AUTOMOBILE CATALYTIC CONVERTERS CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160203 Termination date: 20201008 |