CN107676534A - A kind of main shaft sealing construction of engine EGR cooler by-passing valve - Google Patents
A kind of main shaft sealing construction of engine EGR cooler by-passing valve Download PDFInfo
- Publication number
- CN107676534A CN107676534A CN201710707693.1A CN201710707693A CN107676534A CN 107676534 A CN107676534 A CN 107676534A CN 201710707693 A CN201710707693 A CN 201710707693A CN 107676534 A CN107676534 A CN 107676534A
- Authority
- CN
- China
- Prior art keywords
- main shaft
- spindle drum
- ring
- passing valve
- sealing
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/06—Spindle sealings with stuffing-box ; Sealing rings with at least one ring attached to both spindle and housing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
- F02M26/23—Layout, e.g. schematics
- F02M26/25—Layout, e.g. schematics with coolers having bypasses
- F02M26/26—Layout, e.g. schematics with coolers having bypasses characterised by details of the bypass valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The present invention relates to a kind of main shaft sealing construction of engine EGR cooler by-passing valve, belong to engine art, the structure includes main shaft and the spindle drum with cavity, axle cap and the rocking arm that are sheathed on successively on main shaft, wherein, spindle drum intracavitary is sequentially provided with the ring-shaped graphite being sheathed on main shaft, T-shaped guide sleeve, annular sleeve and sealing ring；Spindle drum is sheathed on the step of main shaft, and spindle drum intracavitary is provided with first step；Ring-shaped graphite contacts with spindle drum bottom of chamber face and chamber side wall；One end face of T-shaped guide sleeve contacts with ring-shaped graphite, and other end and the first step of spindle drum intracavitary leave space；The first compressing member is additionally provided between T-shaped guide sleeve and annular sleeve；Sealing ring is pressed in annular sleeve by axle cap interference, and T-shaped guide sleeve, annular sleeve and sealing ring also contact with chamber side wall；The second compressing member is additionally provided between axle cap and rocking arm.Structure novelty of the present invention is compact, good sealing effect, it is ensured that enduringly works.
Description
Technical field
The present invention relates to a kind of main shaft sealing construction of cooler by-passing valve, by especially a kind of engine EGR cooler
The main shaft sealing construction of port valve, belong to engine art.
Background technology
It in the cooler for recycled exhaust gas by-passing valve main shaft course of work, should rotate, while also need to ensure to seal, and the medium sealed
For engine exhaust, for temperature at 400 DEG C or so, pressure is close including end face O-ring in 320Kpa or so, traditional sealing means
Envelope, oil sealing sealing etc., it is difficult to meet the reliability requirement of sealing, what it is additionally, due to leakage is engine exhaust, is contained in waste gas
Soot and other HC compounds, piece surface dirt deposits after leakage, it is difficult to meet customer need.
Therefore, the main shaft for being badly in need of a kind of novel, compact, good sealing effect the engine cooling apparatus by-passing valve of structure at present is close
Seal structure.
The content of the invention
It is an object of the invention in view of the above-mentioned problems, providing a kind of engine EGR cooler by-passing valve main shaft seal
Structure, there is good sealing effectiveness.Concrete scheme is as follows：
A kind of main shaft sealing construction of engine EGR cooler by-passing valve, including main shaft and the band that is sheathed on successively on main shaft
Spindle drum, axle cap and the rocking arm of cavity, wherein, spindle drum intracavitary is sequentially provided with the ring-shaped graphite being sheathed on main shaft, T-shaped is oriented to
Set, annular sleeve and sealing ring；Spindle drum is sheathed on the step of main shaft, and spindle drum intracavitary is provided with first step；Ring-shaped graphite with
Spindle drum bottom of chamber face and the contact of chamber side wall；One end face of T-shaped guide sleeve contacts with ring-shaped graphite, other end and spindle drum intracavitary
First step leave space；The first compressing member is additionally provided between T-shaped guide sleeve and annular sleeve；Sealing ring passes through axle cap interference
It is pressed in annular sleeve, T-shaped guide sleeve, annular sleeve and sealing ring also contact with chamber side wall；Second is additionally provided between axle cap and rocking arm
Compressing member.
Further, the first compressing member and the second compressing member are wavy spring.The wavy spring of axle cap upper end can be kept
Main shaft is bonded with spindle drum end face, forms end face seal；Wavy spring in spindle drum allows ring-shaped graphite by compressing guide sleeve
Certain decrement is remained, strengthens sealing effectiveness；Ring-shaped graphite is while sealing, it can be ensured that the smooth rotation of main shaft.
Further, main shaft is provided with a plurality of groove, thrust when on the contact surface of ring-shaped graphite and main shaft due to press fitting
The bar shaped rib to be formed and coordinated with the groove is acted on wavy spring.Main shaft forms radial direction and local linear sealing with ring-shaped graphite,
Further increase sealing effectiveness.
Further, the sealing ring is backbone sealing ring, and backbone sealing ring locally connects with annular sleeve, main shaft and axle cap
Touch, it is ensured that the gas that will leak out whole sealing structure thoroughly seals up.
Further, spindle drum is fixedly arranged on cover plate, it is ensured that while air-tightness, guarantee main shaft is same with lower support hole
Axle degree, so that main axis is flexible.
Beneficial effects of the present invention are as follows：
The present invention passes through the end face seal of the end face seal of main shaft and spindle drum, soft graphite and spindle drum, soft graphite and master
The radial seal of axle and spindle drum and the wavy spring effect for considering soft graphite decrement attenuation compensation, keep flexible stone
Ink radial seal it is effective all the time, finally again by with backbone sealing ring will likely leak through come waste gas thoroughly seal up, can
To ensure that this structure is normal, reliably, enduringly works, it is ensured that the waste gas that engine exhaust is used to recycle does not leak, and keeps increasing
Pressure before depressor whirlpool, engine performance do not decline, while the not noise caused by exhaust gas leakage, avoid due to high-temp waste gas
Leak the potential safety hazard brought.Because soft graphite has certain lubricating function, it can be ensured that main shaft is entirely using process
It is middle to rotate flexibly, without clamping stagnation.
Brief description of the drawings
Fig. 1 is the structural representation of the main shaft sealing construction of EGR cooler for diesel by-passing valve；
Fig. 2 is the structural representation of EGR cooler for diesel by-passing valve；
Fig. 3 is the schematic diagram that EGR cooler for diesel by-passing valve is installed on cooler for recycled exhaust gas assembly EGR valve seat；
Fig. 4 is schematic diagram of the main shaft sealing construction of EGR cooler for diesel by-passing valve under by-passing valve nature；
Fig. 5 be EGR cooler for diesel by-passing valve main shaft sealing construction under by-passing valve working condition schematic diagram；
Wherein：1- main shafts, 2- spindle drums, 3- ring-shaped graphites, 4- cover plates, 5-T types guide sleeve, the compressing members of 6- first, 7- annular sleeves,
8- sealing rings, 9- axle caps, the compressing members of 10- second, 11- swing arms, 12-EGR valves.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the present embodiment is carried out clearly and completely
Description, it is clear that described embodiment is only to a part of example of the present invention, rather than whole examples.Based on the present invention
In embodiment, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not paid
Example, belongs to the scope of protection of the invention.
As shown in Figure 1-2, the present embodiment is the main shaft sealing construction of EGR cooler for diesel by-passing valve, including main shaft 1 with
And the spindle drum 2 with cavity, axle cap 9 and rocking arm 11 on main shaft are sheathed on successively, wherein, spindle drum intracavitary, which is sequentially provided with, to be arranged
In the ring-shaped graphite 3 on main shaft, T-shaped guide sleeve 5, annular sleeve 7 and sealing ring 8；Spindle drum is sheathed on the step of main shaft, is formed
End face seal, spindle drum intracavitary are provided with first step；Ring-shaped graphite can be soft graphite, and soft graphite 3 has certain to axle
Lubrication, in order to which main shaft rotates.
Ring-shaped graphite 3 is contacted with spindle drum bottom of chamber face and chamber side wall, and the lower surface of ring-shaped graphite 3 is formed with the bottom surface of spindle drum 2
End face seal, the external cylindrical surface of ring-shaped graphite 3 form the radial direction face of cylinder with the chamber side wall of spindle drum 2 and sealed, the inner cylinder face of ring-shaped graphite 3
The radial direction face of cylinder is formed with the external cylindrical surface of main shaft 1 to seal, preferably, main shaft is provided with a plurality of groove, ring-shaped graphite and main shaft
Contact surface on due to press fitting when thrust and wavy spring act on to be formed with the groove coordinate bar shaped rib.Main shaft and annular
Graphite forms radial direction and local linear sealing, further increases sealing effectiveness.
The bottom end face of T-shaped guide sleeve 5 contacts with ring-shaped graphite, lower surface and the spindle drum intracavitary on the top of T-shaped guide sleeve 5
First step leaves space；The first compressing member 6 is additionally provided between T-shaped guide sleeve 5 and annular sleeve 7, the first compressing member 6 compresses T-shaped
Guide sleeve remains certain decrement by ring-shaped graphite；Sealing ring 8 is pressed in annular sleeve 7 by the interference of axle cap 9, and T-shaped is led
In sealing contact also with the chamber side wall of spindle drum 2 to set 5, annular sleeve 7 and sealing ring 8, sealing ring is preferably backbone sealing ring, and skeleton is close
Seal and annular sleeve 7, main shaft 1 and the localized contact of axle cap 9, the lip of backbone sealing ring 8 form multiple tracks circle with the external cylindrical surface of main shaft 1
Linear sealing, it is ensured that waste gas does not leak.Annular sleeve 7 can be copper sheathing.
Precommpression is carried out to the first compressing member 6 by copper sheathing 7 after the force fit of backbone sealing ring 8, the first compressing member 6 passes through
Compressing guide sleeve 5 compresses soft graphite 3, it is ensured that soft graphite 3 remains the decrement needed for sealing in the course of the work；Axle
The second compressing member 10 is additionally provided between cap 9 and rocking arm 11, the second compressing member 10 can keep main shaft to be bonded with spindle drum end face, really
Confidential letter, swing arm 11 are pressed into after keeping the second compressing member 11 to have certain decrement and welded together with main shaft 1.As excellent
Choosing, the first compressing member and the second compressing member are wavy spring.
While ensuring air-tightness, ensure main shaft and the axiality in lower support hole, so that main axis is flexible.
As shown in figure 3, the main shaft sealing construction of the present embodiment EGR cooler for diesel by-passing valve is installed on cooler for recycled exhaust gas
Schematic diagram on assembly EGR valve seat.
As shown in figure 4, the main shaft sealing construction of the present embodiment EGR cooler for diesel by-passing valve is in by-passing valve nature
Lower signal, EGR exhaust enter from cooler for recycled exhaust gas porch, then the radiating tube by U-shaped cooler for recycled exhaust gas body, in EGR valve 12
In the case of putting place's EGR valve closing, waste gas is enclosed in cooler for recycled exhaust gas, and main shaft 1 is all 320kPa in the lower periphery of spindle drum 2
The waste gas of pressure；In the case where the opening position EGR valve of EGR valve 12 is opened, waste gas flows through cooler for recycled exhaust gas exit by EGR valve,
Main shaft 1 is all that pressure is slightly less than 320kPa waste gas in the lower periphery of spindle drum 2.
As shown in figure 5, the main shaft sealing construction of the present embodiment EGR cooler for diesel by-passing valve is in by-passing valve working condition
Lower signal, EGR exhaust enter from cooler for recycled exhaust gas porch, are directly entered cooler for recycled exhaust gas assembly EGR valve seat, in EGR valve 12
In the case of putting place's EGR valve closing, waste gas is enclosed in cooler for recycled exhaust gas, and main shaft 1 is all 320kPa in the lower periphery of spindle drum 2
The waste gas of pressure；In the case where the opening position EGR valve of EGR valve 12 is opened, waste gas flows through cooler for recycled exhaust gas exit by EGR valve,
Main shaft 1 is all that pressure is slightly less than 320kPa waste gas in the lower periphery of spindle drum 2；
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (5)
- A kind of 1. main shaft sealing construction of engine EGR cooler by-passing valve, it is characterised in that：It is arranged including main shaft and successively In the spindle drum with cavity, axle cap and rocking arm on main shaft, wherein, spindle drum intracavitary is sequentially provided with the annular being sheathed on main shaft Graphite, T-shaped guide sleeve, annular sleeve and sealing ring；Spindle drum is sheathed on the step of main shaft, and spindle drum intracavitary is provided with First Rank；Ring-shaped graphite contacts with spindle drum bottom of chamber face and chamber side wall；One end face of T-shaped guide sleeve contacts with ring-shaped graphite, the other end Face and the first step of spindle drum intracavitary leave space；The first compressing member is additionally provided between T-shaped guide sleeve and annular sleeve；Sealing ring It is pressed on by axle cap interference in annular sleeve, T-shaped guide sleeve, annular sleeve and sealing ring also contact with chamber side wall；Axle cap and rocking arm it Between be additionally provided with the second compressing member.
- 2. the main shaft sealing construction of engine EGR cooler by-passing valve according to claim 1, it is characterised in that：First Compressing member and the second compressing member are wavy spring.
- 3. the main shaft sealing construction of engine EGR cooler by-passing valve according to claim 1, it is characterised in that：Main shaft It is provided with a plurality of groove, thrust and wavy spring, which act on, when on the contact surface of ring-shaped graphite and main shaft by press fitting to form and institute State the bar shaped rib of groove cooperation.
- 4. the main shaft sealing construction of engine EGR cooler by-passing valve according to claim 1, it is characterised in that：It is described Sealing ring is backbone sealing ring, backbone sealing ring and annular sleeve, main shaft and axle cap localized contact.
- 5. the main shaft sealing construction of engine EGR cooler by-passing valve according to claim 1, it is characterised in that：Main shaft Seat is fixedly arranged on cover plate, it is ensured that the perpendicularity of main shaft and cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710707693.1A CN107676534B (en) | 2017-08-17 | 2017-08-17 | A kind of main shaft sealing construction of engine EGR cooler by-passing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710707693.1A CN107676534B (en) | 2017-08-17 | 2017-08-17 | A kind of main shaft sealing construction of engine EGR cooler by-passing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107676534A true CN107676534A (en) | 2018-02-09 |
| CN107676534B CN107676534B (en) | 2019-05-31 |
Family
ID=61136015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710707693.1A Active CN107676534B (en) | 2017-08-17 | 2017-08-17 | A kind of main shaft sealing construction of engine EGR cooler by-passing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676534B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538790A (en) * | 1983-03-24 | 1985-09-03 | Whitey Co. | Valve stem packing assembly |
| DE9213296U1 (en) * | 1992-10-02 | 1992-12-03 | Chemat GmbH Armaturen für Industrie- und Nuklearanlagen, 7592 Renchen | Fitting for fluid-tight and fire-resistant stem sealing |
| CN203348604U (en) * | 2013-06-28 | 2013-12-18 | 浙江华夏阀门有限公司 | Three-sheet butt-weld connection float ball valve |
| CN103620281A (en) * | 2010-07-30 | 2014-03-05 | 世伟洛克公司 | Anti-extrusion packing support |
| DE102013100043A1 (en) * | 2013-01-04 | 2014-07-10 | Vag-Armaturen Gmbh | Stop valve for use in fluid line to limit or interrupt fluid flow, has spindle bearing comprising outer part and inner part, and radially outwardly pressing outer part against housing for fixation against housing |
| CN204573178U (en) * | 2015-04-27 | 2015-08-19 | 浙江申仪自控阀门有限公司 | A kind of ball valve |
| CN105240562A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | Silica-sol high platform floating ball valve |
| CN205841844U (en) * | 2016-06-27 | 2016-12-28 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of manual flanged ball valve |
| CN206246721U (en) * | 2016-12-01 | 2017-06-13 | 中山高达阀门有限公司 | The stem structure of ball valve |
-
2017
- 2017-08-17 CN CN201710707693.1A patent/CN107676534B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538790A (en) * | 1983-03-24 | 1985-09-03 | Whitey Co. | Valve stem packing assembly |
| DE9213296U1 (en) * | 1992-10-02 | 1992-12-03 | Chemat GmbH Armaturen für Industrie- und Nuklearanlagen, 7592 Renchen | Fitting for fluid-tight and fire-resistant stem sealing |
| CN103620281A (en) * | 2010-07-30 | 2014-03-05 | 世伟洛克公司 | Anti-extrusion packing support |
| DE102013100043A1 (en) * | 2013-01-04 | 2014-07-10 | Vag-Armaturen Gmbh | Stop valve for use in fluid line to limit or interrupt fluid flow, has spindle bearing comprising outer part and inner part, and radially outwardly pressing outer part against housing for fixation against housing |
| CN203348604U (en) * | 2013-06-28 | 2013-12-18 | 浙江华夏阀门有限公司 | Three-sheet butt-weld connection float ball valve |
| CN204573178U (en) * | 2015-04-27 | 2015-08-19 | 浙江申仪自控阀门有限公司 | A kind of ball valve |
| CN105240562A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | Silica-sol high platform floating ball valve |
| CN205841844U (en) * | 2016-06-27 | 2016-12-28 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of manual flanged ball valve |
| CN206246721U (en) * | 2016-12-01 | 2017-06-13 | 中山高达阀门有限公司 | The stem structure of ball valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107676534B (en) | 2019-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105240532B (en) | A kind of oil enveloping structure | |
| CN209444958U (en) | A kind of whirl compensator sealing structure with the level on outer tube inner convex platform | |
| CN101086197A (en) | Bearing metal sealing structure for rock bit | |
| CN107676534A (en) | A kind of main shaft sealing construction of engine EGR cooler by-passing valve | |
| CN210859602U (en) | Non-maintaining universal joint seal structure with combination formula exhaust hole | |
| CN209370297U (en) | A kind of deep groove ball bearing seal assembly | |
| CN217682879U (en) | Novel universal joint bearing | |
| CN103552827A (en) | Three-lip combined sealing device of carrier roller | |
| CN204329585U (en) | The carbon seal ring hermetically-sealed construction of rotary furnace | |
| CN114962461A (en) | Novel universal joint bearing | |
| CN208703129U (en) | A kind of mechanically-sealing apparatus of erosion resistant | |
| CN202597023U (en) | High-pressure packing sealing device for compressor | |
| CN208185466U (en) | A kind of five lip combination seals | |
| CN205806482U (en) | Combination hydraulic rotary shaft oil seal | |
| CN205315506U (en) | Take resistant high pressure and high temperature of gas pocket and water proofness automobile water pump bearing seal circle | |
| CN205743811U (en) | Support, sealing and the lubrication system of a kind of trailing type wellhead sealing device | |
| CN205479460U (en) | Floating ball valve | |
| CN211599325U (en) | Combined type breathable sealed universal joint | |
| CN211992031U (en) | Deep hole lathe is awarded oily ware tip rotation prevention of seepage and is leaked structure | |
| CN210344073U (en) | Universal joint with breathable sealing structure | |
| CN203548905U (en) | Pouring plug sealing body | |
| CN207526742U (en) | A kind of bi-motor sealing device | |
| CN211009898U (en) | Air seal assembly structure | |
| CN214331469U (en) | Oil seal device for bearing chamber of boiler feed water pre-pump | |
| CN205745386U (en) | A kind of self-pressure-sealed gate valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |