CN203925798U - A kind of sealing configuration of electric EGR valve - Google Patents
A kind of sealing configuration of electric EGR valve Download PDFInfo
- Publication number
- CN203925798U CN203925798U CN201420379081.6U CN201420379081U CN203925798U CN 203925798 U CN203925798 U CN 203925798U CN 201420379081 U CN201420379081 U CN 201420379081U CN 203925798 U CN203925798 U CN 203925798U
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- center
- pole
- egr valve
- sealing
- guide sleeve
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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
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses a kind of sealing configuration of electric EGR valve, comprise the guide sleeve being sleeved on center-pole, the equipped upper end of described guide sleeve and center-pole offers annular groove, is provided with the lip seal part with center-pole sealing assembling in annular groove; Described guide sleeve and center-pole match to hold to hold and are set to hierarchic structure, and retaining ring sealing part and little O RunddichtringO are installed on top-down the first ladder, on the second ladder, Shim are installed, and on the 3rd ladder, retaining washer are installed; Described retaining ring sealing part is positioned at little O RunddichtringO inner ring and assembles with center-pole sealing.The utility model can prevent that engine exhaust from entering the transmission system of electric EGR valve, has protected transmission part in valve not corroded, and has improved the reliability of EGR valve work, has extended the working life of EGR valve.
Description
Technical field
The utility model relates to engine exhaust emission control gear technical field, particularly the sealing configuration of electric EGR valve in a kind of engine exhaust emission gas recirculation system.
Background technique
Engine exhaust-gas recirculating system, its basic principle is that the part waste gas that motor is discharged is introduced gas handling system, thereby improves combustion performance, to reduce the formation of NOx and the discharge amount of refuse in engine exhaust, reduces pollution of atmosphere, improves atmosphere environment.Electric EGR valve is the executive component that regulates EGR gas flow in engine exhaust-gas recirculating system, be arranged on the electromechanical integrated product that is used for controlling the amount of exhaust gas recirculation that feeds back to gas handling system on motor, be most important parts in gas recirculation system, whether its stability and reliability direct relation motor can normally work.
The utilization of sealing configuration in electric EGR valve very extensively, for preventing waste gas direct admission valve intracoelomic cavity.But due to the environment very severe of electric EGR valve work, after working long hours, be easy to form the bad phenomenon such as carbon distribution, coking, and particle in waste gas and sour gas are very easy to destroy Sealing, thereby cause seal fails, the waste gas direct admission valve intracoelomic cavity that motor is discharged, causes the transmission system of electric EGR valve inside because hot and humid reason lost efficacy, and then causes engine exhaust-gas recirculating system to run well.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and seals reliably, can effectively prevent that engine exhaust from entering the electric EGR valve sealing configuration of electric EGR valve transmission system.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A sealing configuration for electric EGR valve, comprises the guide sleeve being sleeved on center-pole, and the equipped upper end of described guide sleeve and center-pole offers annular groove, is provided with the lip seal part with center-pole sealing assembling in annular groove; Described guide sleeve and center-pole match to hold to hold and are set to hierarchic structure, and retaining ring sealing part and little O RunddichtringO are installed on top-down the first ladder, on the second ladder, Shim are installed, and on the 3rd ladder, retaining washer are installed; Described retaining ring sealing part is positioned at little O RunddichtringO inner ring and assembles with center-pole sealing.
Improvement of the present utility model is: described retaining ring sealing part material is teflon.
Improvement of the present utility model is: the outer circumferential side of described guide sleeve is by the large O RunddichtringO of twice and valve body assembling.
Owing to having adopted above technological scheme, the obtained technological progress of the utility model is as follows.
The utility model arranges first ring type sealing structure in guide sleeve bottom, sealing configuration is made up of teflon retaining ring sealing part, O RunddichtringO and two-layer pad; Spielpassung between pad and center-pole, has stoped most exhaust gas particle; Retaining ring sealing part forms certain drive fit by tension force and the center-pole of O RunddichtringO, prevents that soot particles and impurity from entering valve inner.Guide sleeve top arranges lip formula sealing configuration one; sealing configuration is made up of stainless steel and resistance to machine oil, resistance to diesel oil, resistant to elevated temperatures teflon herein; due to the existence of sealing configuration herein; even lower seal structural failure; sealing herein also can be played good protection effect; along with the surface of contact between the part meeting of increase lip seal and the center-pole of exhaust gas pressure becomes larger, seal all the more tight simultaneously.By using the utility model structure, soot particles thing in can very effective prevention engine exhaust, sour gas, high-temperature water vapor etc. enter electric EGR valve intracoelomic cavity, have improved reliability and the working life of electric EGR valve.
Brief description of the drawings
Accompanying drawing 1 is for being equipped with the utility model structural representation;
Wherein: 1. center-pole, 2. lip seal part, 3. guide sleeve, 4. large O RunddichtringO, 5. retaining ring sealing part, 6. Shim, 7. retaining washer, 8. little O RunddichtringO.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
A sealing configuration for electric EGR valve, as shown in Figure 1, comprises the large O RunddichtringO of guide sleeve 3, two 4, retaining ring sealing part 5, little O RunddichtringO 8, Shim 6, retaining washer 7 and a lip seal part 2.
Wherein guide sleeve 3 is circular, is set on center-pole 1; Large O RunddichtringO 4 is arranged in the groove of guide sleeve outer ring, for assembling with valve seal.
The equipped upper end of guide sleeve 3 and center-pole offers annular groove, and lip seal part 2 is positioned at annular groove, and assembles with center-pole 1 sealing.Guide sleeve and center-pole match to hold to hold and are set to hierarchic structure, and retaining ring sealing part 5 and little O RunddichtringO 8 are arranged on top-down the first ladder, and Shim 6 is placed on the second ladder, and retaining washer 7 is placed on the 3rd ladder; Wherein retaining ring sealing part 5 is positioned at little O RunddichtringO 8 inner ring places, with center-pole sealing assembling.
The present embodiment guide ring Sealing 5 materials are teflon, and lip seal part 2 is made up of stainless steel and teflon.
When the utility model assembling, first pack 2 compactings of lip seal part into guide sleeve 3, and guide sleeve 3 is pressed; Then guide sleeve 3 is inverted, loads onto successively retaining ring sealing part 5, little O RunddichtringO 8, little Shim 6 and retaining washer 7 and press, pack center-pole 7 into; Finally load onto 2 large O RunddichtringOs 4 in guide sleeve outer ring, this has just completed assembling of the present utility model.
In the time of electronic EGE valve work, the air cavity that enters electric EGR valve with the high compression engine waste gas of soot particles thing, sour gas, high-temperature water vapor etc., 2 large O RunddichtringOs 4 of guide sleeve outer ring are by effectively having stoped waste gas to enter into body cavity with closely cooperating of valve body; Pad in one ring type sealing configuration that guide sleeve bottom arranges and the Spielpassung between center-pole, stoped most exhaust gas particle; Sealing shield ring forms certain drive fit by tension force and the center-pole of O RunddichtringO, prevents that soot particles and impurity from entering valve inner.One lip formula sealing configuration that guide sleeve top arranges is made up of stainless steel and resistance to machine oil, resistance to diesel oil, resistant to elevated temperatures teflon; even lower seal structural failure; sealing herein also can be played good protection effect; soot particles thing in can very effective prevention engine exhaust, sour gas, high-temperature water vapor etc. enter electric EGR valve intracoelomic cavity, have improved reliability and the working life of electric EGR valve.
Claims (3)
1. the sealing configuration of an electric EGR valve, comprise the guide sleeve (3) being sleeved on center-pole (1), it is characterized in that: the equipped upper end of described guide sleeve (3) and center-pole offers annular groove, in annular groove, be provided with the lip seal part (2) with center-pole sealing assembling; Described guide sleeve and center-pole match to hold to hold and are set to hierarchic structure, retaining ring sealing part (5) and little O RunddichtringO (8) are installed on top-down the first ladder, Shim (6) is installed on the second ladder, retaining washer (7) is installed on the 3rd ladder; Described retaining ring sealing part (5) is positioned at little O RunddichtringO (8) inner ring and assembles with center-pole sealing.
2. a kind of sealing configuration of electric EGR valve according to claim 1, is characterized in that: described retaining ring sealing part (5) material is teflon.
3. the sealing configuration of a kind of electric EGR valve according to claim 1, is characterized in that: the outer circumferential side of described guide sleeve is by the large O RunddichtringOs of twice (4) and valve body assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379081.6U CN203925798U (en) | 2014-07-09 | 2014-07-09 | A kind of sealing configuration of electric EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420379081.6U CN203925798U (en) | 2014-07-09 | 2014-07-09 | A kind of sealing configuration of electric EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203925798U true CN203925798U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420379081.6U Active CN203925798U (en) | 2014-07-09 | 2014-07-09 | A kind of sealing configuration of electric EGR valve |
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| CN (1) | CN203925798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088730A (en) * | 2014-07-09 | 2014-10-08 | 无锡隆盛科技股份有限公司 | Sealing structure for electric EGR valves |
-
2014
- 2014-07-09 CN CN201420379081.6U patent/CN203925798U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088730A (en) * | 2014-07-09 | 2014-10-08 | 无锡隆盛科技股份有限公司 | Sealing structure for electric EGR valves |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |