CN203146148U - Sealing structure of electric EGR valve - Google Patents
Sealing structure of electric EGR valve Download PDFInfo
- Publication number
- CN203146148U CN203146148U CN2013201538099U CN201320153809U CN203146148U CN 203146148 U CN203146148 U CN 203146148U CN 2013201538099 U CN2013201538099 U CN 2013201538099U CN 201320153809 U CN201320153809 U CN 201320153809U CN 203146148 U CN203146148 U CN 203146148U
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- CN
- China
- Prior art keywords
- egr valve
- ring
- sealing
- center
- pole
- 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 - Lifetime
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model discloses a sealing structure of an electric EGR valve. An upper groove and a lower groove are formed in the copper bush upper end and the copper bush lower end of the electric EGR valve; an upper sealing device is riveted in the upper groove in a pressing mode, the upper sealing device comprises an upper polytetrafluoroethylene sealing check ring and an upper shim which are riveted in the upper groove in a pressing mode from bottom to top in sequence, and an upper O-shaped sealing check ring is arranged in the upper polytetrafluoroethylene sealing check ring; a lower sealing device is arranged in the lower groove; the lower sealing device comprises a lower polytetrafluoroethylene sealing check ring, a gasket and a lower shim, wherein the lower polytetrafluoroethylene sealing check ring, the gasket and the lower shim are riveted at the copper bush lower end in a pressing mode from top to bottom in sequence, and a lower O-shaped sealing check ring is arranged in the lower polytetrafluoroethylene sealing check ring. The sealing structure of the electric EGR valve can effectively avoid clamping stagnation of a center rod caused by carbon deposition, ensures working reliability of the electric EGR valve and promotes service life of the EGR valve.
Description
Technical field
The utility model relates to a kind of novel sealing configuration, particularly a kind of sealing configuration that is applied on the electronic EGR valve of motor.
Background technique
The basic principle of gas recirculation system is that the part waste gas that motor is discharged is introduced gas handling system, thereby improves combustion performance, with the formation of NOx and the discharge amount of refuse in the minimizing engine exhaust, reduces the pollution to atmosphere.Electronic EGR valve is one and is installed in the electromechanical integrated product that is used for controlling the amount of exhaust gas recirculation that feeds back to gas handling system on the motor, be parts most important, crucial in the Exhaust gas recirculation device, its reliable and stable work directly affects the proper functioning of motor, a major failure pattern of electronic EGR valve is clamping stagnation, and sealing configuration plays important effect to the clamping stagnation of EGR valve.Because electronic EGR valve needs to work under rugged environment for a long time, be very easy in the copper sheathing form thicker carbon distribution, thereby cause being positioned at the center-pole generation clamping stagnation at copper sheathing center.
Summary of the invention
The technical problem that the utility model solves provides the higher electronic EGR valve seal structure of a kind of sealability, has solved because the center-pole clamping stagnation problem that factors such as carbon distribution cause further improves the reliability of electronic EGR work.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
The sealing configuration of electronic EGR valve, copper sheathing upper end and the copper sheathing lower end of described electronic EGR valve pocket dress center-pole are respectively arranged with upper groove and low groove; Upper sealing device has pressed in the described upper groove, upper sealing device comprise be sleeved on center-pole top and press successively from bottom to top in the copper sheathing upper groove on teflon seal back-up ring and last Shim, be provided with in the last teflon seal back-up ring and center-pole friction tight on O type Sealing shield ring; Be provided with lower sealing device in the described low groove; Lower sealing device comprises that being sleeved on the center-pole bottom also presses successively at following teflon seal back-up ring, packing ring and the following Shim of copper sheathing lower end, is provided with in the following teflon seal back-up ring and the friction tight O type Sealing shield ring down of center-pole from top to bottom.
Owing to adopted above technological scheme, the obtained technological progress of the utility model is as follows.
The novel employing two seals of the utility model structural type, not only can effectively prevent because carbon distribution causes the generation of center-pole catching phenomenon, simultaneously can prevent that again the etchant gases such as water vapor in the waste gas from entering the cavity of electronic EGR valve, component in the electronic EGR valve are produced corrosion, further guarantee the reliability of electronic EGR valve work, improved the working life of EGR valve.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1, copper sheathing, 2, center-pole, 21, go up the teflon seal back-up ring, 22, teflon seal back-up ring down, 31, go up Shim, 32, Shim down, 41, go up O type Sealing shield ring, 42, O type Sealing shield ring down, 5, packing ring.
Embodiment
Below in conjunction with specific embodiments and the drawings, the utility model is further elaborated.
The center-pole 2 of electronic EGR valve is sleeved in the center hole of copper sheathing 1, and the sealing configuration of electronic EGR valve as shown in Figure 1.The position that the upper end of copper sheathing is positioned at center hole is provided with upper groove, upper sealing device has pressed in the upper groove, upper sealing device comprises teflon seal back-up ring 21 and last Shim 31, presses in upper groove successively from bottom to top after last teflon seal back-up ring 21 and last Shim 31 pass center-pole successively.Be provided with O RunddichtringO 41 in the last teflon seal back-up ring 21, last teflon seal back-up ring 21 prevents effectively that by tension force and the center-pole drive fit of last O RunddichtringO 41 soot particles agent and impurity from entering the generation that the center-pole catching phenomenon is caused in valve body copper sheathing inside from the copper sheathing upper end.
The position that the lower end of copper sheathing 1 is positioned at center hole is provided with low groove, be provided with lower sealing device in the low groove, lower sealing device comprises teflon seal back-up ring 22, packing ring 5 and following Shim 32 down, presses successively in little groove from top to bottom after following teflon seal back-up ring 22, packing ring 5 and following Shim 32 pass center-pole successively.Be provided with down O type Sealing shield ring 42 in the following teflon seal back-up ring 22, following teflon seal back-up ring 22 forms the state that closely cooperates by tension force and the center-pole bottom of following O RunddichtringO 42, enters the generation that causes the center-pole catching phenomenon in the valve body copper sheathing from the copper sheathing lower end to prevent soot particles and impurity.
Claims (1)
1. the sealing configuration of an electronic EGR valve is characterized in that: copper sheathing (1) upper end and the copper sheathing lower end of described electronic EGR valve pocket dress center-pole (2) are respectively arranged with upper groove and low groove; Upper sealing device has pressed in the described upper groove, upper sealing device comprises and is sleeved on center-pole (2) top and press successively last teflon seal back-up ring (21) and last Shim (31) copper sheathing (1) upper groove in from bottom to top, be provided with in the last teflon seal back-up ring (21) and center-pole friction tight on O type Sealing shield ring (41); Be provided with lower sealing device in the described low groove; Lower sealing device comprises that being sleeved on the center-pole bottom also presses successively at following teflon seal back-up ring (22), packing ring (5) and the following Shim (32) of copper sheathing (2) lower end, is provided with in the following teflon seal back-up ring (22) and the friction tight O type Sealing shield ring (42) down of center-pole from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201538099U CN203146148U (en) | 2013-03-29 | 2013-03-29 | Sealing structure of electric EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201538099U CN203146148U (en) | 2013-03-29 | 2013-03-29 | Sealing structure of electric EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203146148U true CN203146148U (en) | 2013-08-21 |
Family
ID=48973682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201538099U Expired - Lifetime CN203146148U (en) | 2013-03-29 | 2013-03-29 | Sealing structure of electric EGR valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203146148U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016075093A1 (en) * | 2014-11-10 | 2016-05-19 | Continental Automotive Gmbh | Sealing system and exhaust gas recirculation valve comprising same |
| EP3401538A1 (en) * | 2017-05-12 | 2018-11-14 | Pierburg GmbH | Exhaust valve for a combustion engine |
-
2013
- 2013-03-29 CN CN2013201538099U patent/CN203146148U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016075093A1 (en) * | 2014-11-10 | 2016-05-19 | Continental Automotive Gmbh | Sealing system and exhaust gas recirculation valve comprising same |
| US10378489B2 (en) | 2014-11-10 | 2019-08-13 | Continental Automotive Gmbh | Sealing system and exhaust gas recirculation valve |
| EP3401538A1 (en) * | 2017-05-12 | 2018-11-14 | Pierburg GmbH | Exhaust valve for a combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |