CN204327326U - The valve rod lubricating structure of EGR valve - Google Patents
The valve rod lubricating structure of EGR valve Download PDFInfo
- Publication number
- CN204327326U CN204327326U CN201420805670.6U CN201420805670U CN204327326U CN 204327326 U CN204327326 U CN 204327326U CN 201420805670 U CN201420805670 U CN 201420805670U CN 204327326 U CN204327326 U CN 204327326U
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- China
- Prior art keywords
- valve rod
- valve
- oil storage
- guide sleeve
- egr
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- 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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- 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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- Lift Valve (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model provides a kind of valve rod lubricating structure of EGR valve, belongs to valve technology field.It solve short problem in valve rod in existing electric EGR valve power-transmitting unit working life.The valve rod lubricating structure of this EGR valve, EGR valve comprises valve body and is positioned at the valve rod of valve body, and valve body internal fixtion has guide sleeve cylindrically, and valve rod is slidably located in guide sleeve and valve rod is coaxial with guide sleeve, is provided with oil-bearing structure between valve rod and guide sleeve.The valve rod lubricating structure of this EGR valve has the advantage of valve rod long service life.
Description
Technical field
The utility model belongs to valve technology field, relates to a kind of EGR valve, particularly a kind of valve rod lubricating structure of EGR valve.
Background technique
Engine exhaust-gas recirculating system (abbreviation egr system) is for reducing the discharge capacity of nitrogen oxides in waste gas, when its function mode refers to and operates under engine load, EGR valve is opened, a small amount of waste gas that motor is discharged is transmitted back to intake manifold, and enters cylinder again burn together with fresh inflammable mixture.Its principle is, utilizes a large amount of CO2 contained in waste gas, and CO2 can not burn and can absorb a large amount of heat, and the combustion temperature of mixed gas in cylinder is reduced, thus reduces the growing amount of NOx, reduces exhaust pollution.
EGR valve in egr system is mainly used in the flow of regulable control EGR gas, the working principle of conventional electric EGR valve is slowed down by double-reduction gear by the moment of torsion that direct current generator exports, after increasing output torque and reduction rotational speed, be straight line motion by eccentric wheel by convert rotational motion again, thus the action of band ovable valve stem, realize the open and close of EGR valve.
A kind of electric EGR valve power-transmitting unit [application number: 201310227178.5 disclosed in Chinese patent storehouse, Authorization Notice No.: CN 103277562 A], comprise the valve rod be arranged in valve seat, the top of described valve rod is connected with power take-off mechanism by power-transmitting unit, described power take-off mechanism comprises direct current generator, the output shaft connection reducer of direct current generator, the output shaft of retarder connects power-transmitting unit, described power-transmitting unit comprises the metal gear be arranged on reducer output shaft, valve stem tip is provided with under power-transmitting unit effect with the slide block that ovable valve stem moves downward, the top of slide block is fixedly connected with the tooth bar be meshed with metal gear, described valve rod, slide block and tooth bar coaxial line are also perpendicular with the central axis of metal gear, the spring for the valve rod that resets is provided with between the bottom of described slide block and valve seat.
In above-mentioned electric EGR valve power-transmitting unit, valve rod outer side wall be stick together with case inside wall thus leading role is played to the movement of valve rod.But this electric EGR valve power-transmitting unit does not arrange lubricating structure, the friction of valve rod when mobile and between housing is strengthened, affects the working life of valve rod.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of valve rod lubricating structure of EGR valve of valve rod long service life.
The purpose of this utility model realizes by following technical proposal: a kind of valve rod lubricating structure of EGR valve, EGR valve comprises valve body and is positioned at the valve rod of valve body, it is characterized in that, described valve body internal fixtion has guide sleeve cylindrically, described valve rod is slidably located in guide sleeve and valve rod is coaxial with guide sleeve, is provided with oil-bearing structure between described valve rod and guide sleeve.
When reality uses, guide sleeve madial wall and valve rod outer side wall stick together thus play leading role to the movement of valve rod.Lubricant oil is stored in this structure during by arranging oil-bearing structure and work between guide sleeve and valve rod, thus lubrication is played to the slip of valve rod, reduce the dry friction between guide sleeve and valve rod, valve rod is glided swimmingly, adds the working life of valve rod simultaneously.
In the valve rod lubricating structure of above-mentioned EGR valve, described oil-bearing structure comprises the some oil storage tanks one being arranged on valve rod outer side surface.
Lubricant oil is stored in oil storage tank one and lubricant oil contacts with guide sleeve madial wall, and in the process of valve rod movement, lubricant oil can contact with whole guide sleeve madial wall gradually, thus further enhancing the working life of valve rod.
In the valve rod lubricating structure of above-mentioned EGR valve, described oil storage tank one is in ring and oil storage tank one is coaxial with valve rod.
By being arranged to the oil storage tank one of ring-type, increasing the area of contact between lubricant oil and guide sleeve madial wall, thus further enhancing the working life of valve rod.
In the valve rod lubricating structure of above-mentioned EGR valve, described oil-bearing structure comprises the some oil storage tanks two being arranged on guide sleeve inner side surface.
Lubricant oil is stored in oil storage tank two and lubricant oil contacts with valve rod outer side wall, and in the process of valve rod movement, lubricant oil can contact with whole valve rod outer side wall gradually, thus further enhancing the working life of valve rod.
In the valve rod lubricating structure of above-mentioned EGR valve, described oil storage tank two is in ring and oil storage tank two is coaxial with guide sleeve.
By being arranged to the oil storage tank two of ring-type, increasing the area of contact between lubricant oil and valve rod outer side wall, thus further enhancing the working life of valve rod.
In the valve rod lubricating structure of above-mentioned EGR valve, the sidewall of described guide sleeve have some oil storage holes, and the oil storage hole be equipped with between two adjacent oil storage tanks one described in, be provided with oil storage part in described oil storage hole, described oil storage part and valve rod lean.
Be used for storing lubricant oil by arranging oil storage part, and coordinate with oil storage tank one, extend the time of valve rod having been moved to lubrication effect, thus strengthen the working life of valve rod further.Being used for storing lubricant oil by arranging oil storage part, reducing the leakage of guide sleeve lubricant oil when assembling, thus extending the time of lubrication further, then strengthening the working life of valve rod further.
In the valve rod lubricating structure of above-mentioned EGR valve, the material of described oil storage part is sponge or cotton.
During use, first sponge or cotton are immersed in lubricant oil and make sponge or cotton absorb lubricant oil, then sponge or cotton are put in oil storage hole, in the moving process of valve rod, valve rod outer side wall can extrude sponge or cotton, lubricant oil is oozed out from sponge or cotton, valve rod is moved and lubricates, thus improve the working life of valve rod.
Compared with prior art, the valve rod lubricating structure of this EGR valve has the following advantages:
1, by between guide sleeve and valve rod, oil-bearing structure is set and this work time this structure in store lubricant oil, thus lubrication is played to the slip of valve rod, reduce the dry friction between guide sleeve and valve rod, valve rod is glided swimmingly, adds the working life of valve rod simultaneously.
2, by being arranged to the oil storage tank one of ring-type, increasing the area of contact between lubricant oil and guide sleeve madial wall, thus further enhancing the working life of valve rod.
3, be used for storing lubricant oil by arranging oil storage part, and coordinate with oil storage tank one, extend the time of valve rod having been moved to lubrication effect, thus strengthen the working life of valve rod further.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of the valve rod lubricating structure of this EGR valve.
Fig. 2 is the structure for amplifying schematic diagram at A place in Fig. 1.
In figure, 1, valve body; 2, valve rod; 2a, oil storage tank one; 3, guide sleeve; 4, oil storage part; 5,0 RunddichtringO.
Embodiment
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, EGR valve comprises valve body 1, is arranged on the valve rod 2 in valve body 1 and is positioned at valve body 1 and the power-transmitting unit that can move up and down with ovable valve stem 2.
Valve rod 2 lubricating structure of this EGR valve is made up of guide sleeve 3, oil storage part 4 etc.Wherein, guide sleeve 3 cylindrically and this guide sleeve 3 be fixed in valve body 1 by friction tight mode.
Further illustrate, guide sleeve 3 outer side wall is provided with annular groove, is provided with 0 RunddichtringO 5 and the outer circumferential face of this 0 RunddichtringO 5 and case inside wall offset in annular groove, makes the connection between guide sleeve 3 and housing keep sealing.
Valve rod 2 is located in guide sleeve 3 and valve rod 2 outer side wall reclines mutually with guide sleeve 3 madial wall.Oil-bearing structure is provided with between valve rod 2 and guide sleeve 3.
As shown in Figure 2, in the present embodiment, oil-bearing structure comprises some oil storage tanks one 2a of being arranged on valve rod 2 outer side surface and along valve rod 2 distribution of lengths.Further optimization, oil storage tank one 2a is ring and oil storage tank one 2a is coaxial with valve rod 2, thus increases the area of contact between lubricant oil and guide sleeve 3 madial wall, thus further enhancing the working life of valve rod 2.
Be equipped with an oil storage hole in adjacent two oil storage tank one 2a and oil storage hole is positioned at guide sleeve 3, be equipped with oil storage part 4 in each oil storage hole and oil storage part 4 and valve rod 2 lean.In the present embodiment, the material of oil storage part 4 is sponge or cotton.During use, first sponge or cotton are immersed in lubricant oil and make sponge or cotton absorb lubricant oil, then sponge or cotton are put in oil storage hole, in the moving process of valve rod 2, valve rod 2 outer side wall can extrude sponge or cotton, lubricant oil is oozed out from sponge or cotton, valve rod 2 is moved and lubricates, thus improve the working life of valve rod 2.
Embodiment two
The present embodiment two with the structure of embodiment one and principle substantially identical, different place is: oil-bearing structure comprises the some oil storage tanks two being arranged on guide sleeve 3 inner side surface, and oil storage tank two is in ring and oil storage tank two is coaxial with guide sleeve 3.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (7)
- The valve rod lubricating structure of 1.EGR valve, EGR valve comprises valve body (1) and is positioned at the valve rod (2) of valve body (1), it is characterized in that, described valve body (1) internal fixtion has guide sleeve (3) cylindrically, described valve rod (2) is slidably located in guide sleeve (3) and valve rod (2) is coaxial with guide sleeve (3), is provided with oil-bearing structure between described valve rod (2) and guide sleeve (3).
- 2. valve rod lubricating structure according to claim 1, is characterized in that, described oil-bearing structure comprises the some oil storage tanks one (2a) being arranged on valve rod (2) outer side surface.
- 3. the valve rod lubricating structure of EGR valve according to claim 2, is characterized in that, described oil storage tank one (2a) is in ring and oil storage tank one (2a) is coaxial with valve rod (2).
- 4. the valve rod lubricating structure of EGR valve according to claim 1, is characterized in that, described oil-bearing structure comprises the some oil storage tanks two being arranged on guide sleeve (3) inner side surface.
- 5. the valve rod lubricating structure of EGR valve according to claim 4, is characterized in that, described oil storage tank two is in ring and oil storage tank two is coaxial with guide sleeve (3).
- 6. the valve rod lubricating structure of the EGR valve according to Claims 2 or 3, it is characterized in that, the sidewall of described guide sleeve (3) have some oil storage holes, and the oil storage hole be equipped with between two adjacent oil storage tanks one (2a) described in, be provided with oil storage part (4) in described oil storage hole, described oil storage part (4) and valve rod (2) lean.
- 7. the valve rod lubricating structure of EGR valve according to claim 6, is characterized in that, the material of described oil storage part (4) is sponge or cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805670.6U CN204327326U (en) | 2014-12-17 | 2014-12-17 | The valve rod lubricating structure of EGR valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805670.6U CN204327326U (en) | 2014-12-17 | 2014-12-17 | The valve rod lubricating structure of EGR valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204327326U true CN204327326U (en) | 2015-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420805670.6U Expired - Fee Related CN204327326U (en) | 2014-12-17 | 2014-12-17 | The valve rod lubricating structure of EGR valve |
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| Country | Link |
|---|---|
| CN (1) | CN204327326U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571592A (en) * | 2018-05-15 | 2018-09-25 | 江苏海川卓越密封材料有限公司 | A kind of seal assembly of mechanical structure |
-
2014
- 2014-12-17 CN CN201420805670.6U patent/CN204327326U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571592A (en) * | 2018-05-15 | 2018-09-25 | 江苏海川卓越密封材料有限公司 | A kind of seal assembly of mechanical structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20211217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |