CN107676534B - 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
- CN107676534B CN107676534B CN201710707693.1A CN201710707693A CN107676534B CN 107676534 B CN107676534 B CN 107676534B CN 201710707693 A CN201710707693 A CN 201710707693A CN 107676534 B CN107676534 B CN 107676534B
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- China
- Prior art keywords
- main shaft
- spindle drum
- ring
- sealing
- sealing ring
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Classifications
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- 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
Abstract
The present invention relates to a kind of main shaft sealing constructions of engine EGR cooler by-passing valve, belong to engine art, the spindle drum with cavity, axle cap and the rocker arm that the structure includes main shaft and is successively sheathed on main shaft, wherein, spindle drum is intracavitary is successively arranged the ring-shaped graphite being sheathed on main shaft, T shape guide sleeve, annular sleeve and sealing ring；Spindle drum is sheathed on the step of main shaft, and spindle drum is intracavitary to be equipped with first step；Ring-shaped graphite is contacted with spindle drum bottom of chamber face and chamber side wall；One end face of T shape guide sleeve is contacted with ring-shaped graphite, and there are gaps with the intracavitary first step of spindle drum for other end；The first compressing member is additionally provided between T shape guide sleeve and annular sleeve；Sealing ring is pressed in annular sleeve by axle cap interference, and T shape guide sleeve, annular sleeve and sealing ring are also contacted with chamber side wall；The second compressing member is additionally provided between axle cap and rocker arm.Structure of the invention novelty is compact, sealing effect is good, 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 technique
It in the cooler for recycled exhaust gas by-passing valve main shaft course of work, should rotate, while also need the medium for guaranteeing to seal, and seal
For engine exhaust, temperature is at 400 DEG C or so, and for pressure in 320Kpa or so, traditional sealing means include that end face O-ring is close
Envelope, oil sealing sealing etc., it is difficult to which the reliability requirement for meeting sealing, what it is additionally, due to leakage is engine exhaust, is contained in exhaust gas
Soot and other HC compounds, piece surface dirt deposits after leakage, it is difficult to meet customer need.
Therefore, it is close to be badly in need of a kind of structure novel, the main shaft for the engine cooling apparatus by-passing valve that compact, sealing effect is good at present
Seal structure.
Summary 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 has good sealing effect.Concrete scheme is as follows:
A kind of main shaft sealing construction of engine EGR cooler by-passing valve, including main shaft and be successively sheathed on main shaft
The spindle drum with cavity, axle cap and rocker arm, wherein spindle drum is intracavitary to be successively arranged the ring-shaped graphite being sheathed on main shaft, T shape
Guide sleeve, annular sleeve and sealing ring；Spindle drum is sheathed on the step of main shaft, and spindle drum is intracavitary to be equipped with first step；Annular stone
Ink is contacted with spindle drum bottom of chamber face and chamber side wall；One end face of T shape guide sleeve is contacted with ring-shaped graphite, other end and spindle drum
There are gaps for intracavitary first step；The first compressing member is additionally provided between T shape guide sleeve and annular sleeve；Sealing ring passes through axle cap
Interference is pressed in annular sleeve, and T shape guide sleeve, annular sleeve and sealing ring are also contacted with chamber side wall；It is additionally provided between axle cap and rocker arm
Second compressing member.
Further, the first compressing member and the second compressing member are waveform spring.The waveform spring of axle cap upper end can be kept
Main shaft is bonded with spindle drum end face, forms end face seal；Waveform spring in spindle drum allows ring-shaped graphite by compressing guide sleeve
It remains certain decrement, enhances sealing effect；Ring-shaped graphite is while sealing, it can be ensured that the smooth rotation of main shaft.
Further, main shaft is equipped with a plurality of groove, pressing force when on the contact surface of ring-shaped graphite and main shaft due to press fitting
The bar shaped rib to be formed with groove cooperation is acted on waveform spring.Main shaft and ring-shaped graphite form radial and local linear sealing,
Further increase sealing effect.
Further, the sealing ring is backbone sealing ring, and backbone sealing ring locally connects with annular sleeve, main shaft and axle cap
Touching, it is ensured that leaked gas is thoroughly sealed up entire sealing structure to.
Further, spindle drum is fixedly arranged on cover board, it is ensured that while air-tightness, guarantee main shaft is same with lower support hole
Axis degree, so that main axis is flexible.
Beneficial effects of the present invention are as follows:
The present invention passes through main shaft and the end face seal of spindle drum, the end face seal of soft graphite and spindle drum, soft graphite
The waveform spring effect of radial seal and consideration soft graphite decrement attenuation compensation with main shaft and spindle drum, keeps soft
The radial seal of property graphite is effective always, finally again by with backbone sealing ring will likely leak through come exhaust gas thoroughly seal
Firmly, it is ensured that this structure is normal, reliably, enduringly works, it is ensured that exhaust gas of the engine exhaust for recycling does not leak, and protects
Pressure before booster whirlpool is held, engine performance does not decline, while the not noise due to caused by exhaust gas leakage, avoids due to high temperature
Exhaust gas leakage bring security risk.Since soft graphite has certain lubricating function, it can be ensured that main shaft is entirely using
It is rotated in the process flexibly, without clamping stagnation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the main shaft sealing construction of EGR cooler for diesel by-passing valve；
Fig. 2 is the structural schematic diagram of EGR cooler for diesel by-passing valve；
Fig. 3 is that EGR cooler for diesel by-passing valve is installed on the schematic diagram 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 in by-passing valve under natural conditions；
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 shaft, 2- spindle drum, 3- ring-shaped graphite, 4- cover board, 5-T type guide sleeve, the first compressing member of 6-, 7- ring
Shape set, 8- sealing ring, 9- axle cap, the second compressing member of 10-, 11- swing arm, 12-EGR valve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out clearly and completely to the technical solution in the present embodiment
Description, it is clear that described embodiment is only rather than whole example to a part of example of the present invention.Based on the present invention
In embodiment, those of ordinary skill in the art's every other implementation obtained under that premise of not paying creative labor
Example, shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, the present embodiment be the main shaft sealing construction of EGR cooler for diesel by-passing valve, including main shaft 1 with
And successively it is sheathed on the spindle drum 2 with cavity, axle cap 9 and rocker arm 11 on main shaft, wherein intracavitary be successively arranged of spindle drum is arranged
In ring-shaped graphite 3, T shape guide sleeve 5, annular sleeve 7 and sealing ring 8 on main shaft；Spindle drum is sheathed on the step of main shaft, is formed
End face seal, spindle drum is intracavitary to be equipped with first step；Ring-shaped graphite can be soft graphite, and soft graphite 3 has axis certain
Lubricating action, in order to main shaft rotation.
Ring-shaped graphite 3 is contacted with spindle drum bottom of chamber face and chamber side wall, and 3 lower end surface of ring-shaped graphite is formed with 2 bottom surface of spindle drum
End face seal, 3 external cylindrical surface of ring-shaped graphite and 2 chamber side wall of spindle drum form radial cylindrical surface and seal, 3 inner cylinder face of ring-shaped graphite
It forms radial cylindrical surface with 1 external cylindrical surface of main shaft to seal, preferably, main shaft is equipped with a plurality of groove, ring-shaped graphite and main shaft
Contact surface on due to press fitting when pressing force and waveform spring act on to be formed with the groove cooperation bar shaped rib.Main shaft and annular
Graphite forms radial and local linear sealing, further increases sealing effect.
5 bottom end face of T shape guide sleeve is contacted with ring-shaped graphite, and the lower end surface on 5 top of T shape guide sleeve and spindle drum are intracavitary
There are gaps for first step；The first compressing member 6 is additionally provided between T shape guide sleeve 5 and annular sleeve 7, the first compressing member 6 compresses T shape
Guide sleeve remains certain decrement by ring-shaped graphite；Sealing ring 8 is pressed in annular sleeve 7 by 9 interference of axle cap, and T shape is led
Also in sealing contact with 2 chamber side wall of spindle drum to set 5, annular sleeve 7 and sealing ring 8, sealing ring is preferably backbone sealing ring, and skeleton is close
It is round that seal and 9 localized contact of annular sleeve 7, main shaft 1 and axle cap, 8 lip of backbone sealing ring and 1 external cylindrical surface of main shaft form multiple tracks
Linear sealing, it is ensured that exhaust 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 8 force fit of backbone sealing ring, the first compressing member 6 passes through
Compressing guide sleeve 5 compresses soft graphite 3, it is ensured that decrement needed for soft graphite 3 remains sealing during the work time；Axis
The second compressing member 10 is additionally provided between cap 9 and rocker 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 weld together with main shaft 1.As excellent
Choosing, the first compressing member and the second compressing member are waveform spring.
While ensuring air-tightness, guarantee the concentricity of main shaft and 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 inlet, then pass through the heat-dissipating pipe of U-shaped cooler for recycled exhaust gas body, at EGR valve 12
In the case where setting place's EGR valve closing, exhaust gas is enclosed in cooler for recycled exhaust gas, and main shaft 1 is all 320kPa in 2 lower periphery of spindle drum
The exhaust gas of pressure；In the case that EGR valve is opened at 12 position of EGR valve, exhaust gas flows through cooler for recycled exhaust gas exit by EGR valve,
Main shaft 1 is all that pressure is slightly less than 320kPa exhaust gas in 2 lower periphery of spindle drum.
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 inlet, cooler for recycled exhaust gas assembly EGR valve seat are directly entered, at EGR valve 12
In the case where setting place's EGR valve closing, exhaust gas is enclosed in cooler for recycled exhaust gas, and main shaft 1 is all 320kPa in 2 lower periphery of spindle drum
The exhaust gas of pressure；In the case that EGR valve is opened at 12 position of EGR valve, exhaust gas flows through cooler for recycled exhaust gas exit by EGR valve,
Main shaft 1 is all that pressure is slightly less than 320kPa exhaust gas in 2 lower periphery of spindle drum；
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of main shaft sealing construction of engine EGR cooler by-passing valve, it is characterised in that: including main shaft and be successively arranged
In the spindle drum with cavity, axle cap and rocker arm on main shaft, wherein spindle drum is intracavitary to be successively arranged the annular being sheathed on main shaft
Graphite, T shape guide sleeve, annular sleeve and sealing ring；Spindle drum is sheathed on the step of main shaft, and spindle drum is intracavitary to be equipped with First
Rank；Ring-shaped graphite is contacted with spindle drum bottom of chamber face and chamber side wall；One end face of T shape guide sleeve is contacted with ring-shaped graphite, the other end
There are gaps with the intracavitary first step of spindle drum in face；The first compressing member is additionally provided between T shape guide sleeve and annular sleeve；Sealing ring
It is pressed in annular sleeve by axle cap interference, T shape guide sleeve, annular sleeve and sealing ring are also contacted with chamber side wall；Axle cap and rocker arm it
Between be additionally provided with the second compressing member；Main shaft is equipped with a plurality of groove, due to compressing when press fitting on the contact surface of ring-shaped graphite and main shaft
Power and waveform spring act on the bar shaped rib to be formed with groove cooperation.
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 waveform spring.
3. the main shaft sealing construction of engine EGR cooler by-passing valve according to claim 1, it is characterised in that: described
Sealing ring is backbone sealing ring, backbone sealing ring and annular sleeve, main shaft and axle cap localized contact.
4. 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 board, it is ensured that the verticality of main shaft and cover board.
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 CN107676534A (en) | 2018-02-09 |
| CN107676534B true 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 |
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| Country | Link |
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| 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 Fuer Industrie- Und Nuklearanlagen, 7592 Renchen, De | |
| 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 Fuer Industrie- Und Nuklearanlagen, 7592 Renchen, De | |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN107676534A (en) | 2018-02-09 |
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