CN203022918U - EGR (Exhaust Gas Recirculation) valve with low leakage amount - Google Patents
EGR (Exhaust Gas Recirculation) valve with low leakage amount Download PDFInfo
- Publication number
- CN203022918U CN203022918U CN2013200002544U CN201320000254U CN203022918U CN 203022918 U CN203022918 U CN 203022918U CN 2013200002544 U CN2013200002544 U CN 2013200002544U CN 201320000254 U CN201320000254 U CN 201320000254U CN 203022918 U CN203022918 U CN 203022918U
- Authority
- CN
- China
- Prior art keywords
- valve body
- guide sleeve
- valve
- egr
- 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
Links
Images
Classifications
-
- 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
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses an EGR (Exhaust Gas Recirculation) valve with a low leakage amount. The EGR valve comprises a valve body provided with a central rod; the inner wall of the valve body, which is provided with the central rod, is sleeved with a guide sleeve which is slidingly matched with the central rod; a sealing ring with the diameter which is greater than the diameter of the guide sleeve is further arranged at the part of the inner wall of the valve body, which is provided with the central rod, above the guide sleeve; and the top face of the sealing ring corresponds to the top face of the valve body, and the sealing ring, the guide sleeve and the valve body are riveted through rivets. The EGR valve disclosed by the utility model is compact in structure and can reduce the leakage amount between the valve body and the guide sleeve, so that the occurrence of a separation phenomenon of the guide sleeve and the valve body is avoided and the service life of the EGR valve is further prolonged.
Description
Technical field
The utility model relates to EGR valve in engine exhaust emission control gear field, particularly a kind of engine exhaust emission gas recirculation system.
Background technique
In the engine exhaust emission gas recirculation system, the valve body of EGR valve part mostly adopts the composite unit structure that guide sleeve and center-pole are equipped with mutually, its effect be when making center-pole do longitudinal movement can and valve body between guarantee less gap value, and make center-pole keep relatively vertical in movement process.Yet, when making valve body, in order to lengthen the guidance quality of center-pole, usually guide sleeve is stretched out valve body one segment distance, when this kind structure does relative motion between center-pole and valve body, easily make the excesssive gap between guide sleeve and center-pole, thereby cause the leakage rate between guide sleeve and valve body suction port excessive, make not clean-burning harmful gas to be fully burned, do not have simultaneously clean-burning waste gas can constantly enter the vacuum chamber on valve seat top, then flow into atmosphere, pollute.In addition, guide sleeve is to adopt the mode that directly is pressed into valve body to install at present, if the magnitude of interference that guide sleeve is pressed in valve body is less, easily cause to vibrate for a long time under working condition at guide sleeve and break away from valve body, even come off, thereby make center-pole can't do relative vertical motion, also can occur stuck existing when serious.
Summary of the invention
The technical problem that the utility model solves is to provide a kind of compact structure, can reduce the EGR valve of leakage rate between valve body and guide sleeve, thereby avoid the generation of guide sleeve and valve body break-off, the working life of further improving the EGR valve.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
Low leakage EGR valve, comprise the valve body that is provided with center-pole, valve body arranges on the inwall of center-pole and is set with the guide sleeve that is slidably matched with center-pole, described valve body arranges the top that is positioned at guide sleeve on the inwall of center-pole and also is provided with diameter greater than the seal ring of guide sleeve diameter, the end face of described seal ring is corresponding with the valve body end face, passes through rivet between seal ring and guide sleeve, valve body.
Owing to having adopted above technological scheme, the obtained technological progress of the utility model is:
The utility model compact structure, setting due to seal ring, make center-pole sealed circle when doing longitudinal movement encase, reduced center-pole because of the amount of friction that produces between motion out of plumb and guide sleeve and quantity of gas leakage between guide sleeve and valve body, when reducing leakage rate, also reduced frictional noise.The structure that the utility model adopts guide sleeve to combine with seal ring adopts interference fit to be pressed into successively in valve body guide sleeve and seal ring simultaneously, then adopts the mode that presses that guide sleeve and seal ring are fastened on valve body; Avoided in guide sleeve Long-term Vibration process producing loosening, even broken away from the possibility of valve body, guaranteed that further center-pole can do vertical motion in guide sleeve, improved working life of the present utility model.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Wherein: 1. valve body, 2. guide sleeve, 3. center-pole, 4. seal ring, 5. rivet.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
A kind of low leakage EGR valve, its structure as shown in Figure 1.Comprise the valve body 1 that is provided with center-pole 3, valve body arranges on the inwall of center-pole and is set with guide sleeve 2 and seal ring 4, between seal ring and center-pole, be between guide sleeve and center-pole and be slidably matched.
The height of seal ring and guide sleeve and corresponding with the height of valve body, namely the end face of the end face of seal ring and valve body is corresponding; The diameter of seal ring is greater than the diameter of guide sleeve, and seal ring 4 is riveted by rivet 5 with the position that guide sleeve 2, valve body 1 intersect, as shown in Figure 2.Rivet is provided with six altogether, and even cloth forms six fastening point on seal ring.
When center-pole 3 is done longitudinal movement, on seal ring 4, center-pole 3 is encased, reduced center-pole 3 because of the amount of friction between motion out of plumb and guide sleeve 2, reduced the leakage rate between guide sleeve 2 and valve body 1.
Claims (1)
1. low leakage EGR valve, comprise the valve body (1) that is provided with center-pole (3), valve body arranges on the inwall of center-pole and is set with the guide sleeve (2) that is slidably matched with center-pole (3), it is characterized in that: described valve body (1) arranges the top that is positioned at guide sleeve (2) on the inwall of center-pole and also is provided with diameter greater than the seal ring (4) of guide sleeve diameter, the end face of described seal ring (4) is corresponding with valve body (1) end face, rivets by rivet (5) between seal ring (4) and guide sleeve (2), valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200002544U CN203022918U (en) | 2013-01-03 | 2013-01-03 | EGR (Exhaust Gas Recirculation) valve with low leakage amount |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200002544U CN203022918U (en) | 2013-01-03 | 2013-01-03 | EGR (Exhaust Gas Recirculation) valve with low leakage amount |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203022918U true CN203022918U (en) | 2013-06-26 |
Family
ID=48646908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013200002544U Expired - Lifetime CN203022918U (en) | 2013-01-03 | 2013-01-03 | EGR (Exhaust Gas Recirculation) valve with low leakage amount |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203022918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221832A (en) * | 2015-11-12 | 2016-01-06 | 无锡隆盛科技股份有限公司 | EGR valve valve rod leak-proof structure |
-
2013
- 2013-01-03 CN CN2013200002544U patent/CN203022918U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221832A (en) * | 2015-11-12 | 2016-01-06 | 无锡隆盛科技股份有限公司 | EGR valve valve rod leak-proof structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203022918U (en) | EGR (Exhaust Gas Recirculation) valve with low leakage amount | |
| CN212509055U (en) | Hydraulic cylinder buffer device | |
| CN202719067U (en) | Stepless speed regulation air spring | |
| CN205479621U (en) | Oxygen production electromagnetic valve | |
| CN103206319A (en) | Sealing structure for electric EGR (exhaust gas recirculation) valve | |
| CN204025233U (en) | cylinder piston rod | |
| CN201963863U (en) | Liquid sealing type piston of air cylinder | |
| CN201461980U (en) | Exhaust adsorption fully-sealing program-controlled valve | |
| CN203868393U (en) | Paste ball valve | |
| CN203202256U (en) | Small flow control valve | |
| CN203146148U (en) | Sealing structure of electric EGR valve | |
| CN203214898U (en) | Sealing structure of bottom valve | |
| CN201896953U (en) | Axial flow control valve | |
| CN202484182U (en) | Guider component for shock absorber | |
| CN204692437U (en) | A kind of improved shock absorber piston | |
| CN205243667U (en) | Can improve swirl ratio, sealing performance and refrigerated engine cylinder of valve portion lid | |
| CN203809408U (en) | Oil cylinder with front lug ring and rear lug ring | |
| CN202301914U (en) | Piston structure of brake main cylinder | |
| CN204784883U (en) | Sleeve check valve | |
| CN102615632A (en) | Air inflow control device of pneumatic tool | |
| CN204283658U (en) | Internal combustion engine shroud ring | |
| CN209278378U (en) | A kind of convenient air-leg | |
| CN202628672U (en) | Stable hydraulic oil cylinder | |
| CN202252313U (en) | Sealing element | |
| CN203202264U (en) | Blind plate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |
|
| CX01 | Expiry of patent term |