CN107461481B - A kind of automobile rear axle vent valve - Google Patents
A kind of automobile rear axle vent valve Download PDFInfo
- Publication number
- CN107461481B CN107461481B CN201710721118.7A CN201710721118A CN107461481B CN 107461481 B CN107461481 B CN 107461481B CN 201710721118 A CN201710721118 A CN 201710721118A CN 107461481 B CN107461481 B CN 107461481B
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- CN
- China
- Prior art keywords
- oil
- venthole
- gas separation
- spool
- rear axle
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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.)
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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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0473—Multiple-way safety valves
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Self-Closing Valves And Venting Or Aerating Valves (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a kind of automobile rear axle vent valves, comprising: mounting base is mounted on rear axle housing body；It is fixed on mounting base upper valve body, interior axial direction is equipped with venthole；Dust cap, is fixed on the top of valve body, and the bottom of dust cap has gas outlet；Spool is set in venthole, and the cavity between spool and venthole is oil-gas separation chamber；Inlet chamber is equipped in spool, inlet chamber bottom is communicated with rear axle housing body；The side wall of inlet chamber is equipped with multiple ventholes being connected with Oil-gas Separation room；Upper valve block is installed on spool top and is used to open or closes oil-gas separation chamber；Oil-gas separation chamber is connected after opening with exhaust outlet；Preloading spring is set between valve deck and upper valve block, for controlling the opening pressure of upper valve block；High-pressure oil gas mixture makes Oil-gas Separation through the side wall that venthole flows out inlet chamber and hits venthole.This programme in valve body by being arranged oil-gas separation chamber, so that gaseous mixture realizes Oil-gas Separation after hitting oil-gas separation chamber side wall.
Description
Technical field
The present invention relates to automobile axle field of accessories more particularly to a kind of automobile rear axle vent valves.
Background technique
External muddy water, dust are splashed into inside axle housing automobile axle in order to prevent, cause gear premature wear, and prevent inside
Oil temperature raising increases axle housing internal pressure, causes axle-shaft oil seal, oil leak at main shaft oil sealing, usually in axle housing or final drive casing
Upper setting breather valve.Currently, most of rear axle breather valve is one-way valve structures, the hole wall on venthole top is equipped with connection axle housing
The internal normal closed gate with outside atmosphere, and in the fixing seat being threadably secured on axle housing for passing through its underpart.The breather plug
Structure is relatively simple, can be realized balance axle housing inside and outside air pressure balance and external muddy water, dust is prevented to be splashed into inside axle housing, but
Be due to axle housing inside high-speed gear operating cause oil temperature to increase, generated gas mixture condenses in discharge process
The case where oil leak still can be generated after breather plug is outer.
Currently, most of rear axle breather valve uses one-way valve structures, as shown in Figure 1, breather valve is solid by its mounting base 2a
It is fixed that on rear axle housing body 1a, the upper end valve body 6a is equipped with the normally closed valve block 5a inside connection rear axle housing body 1a with outside atmosphere, when after
When pressure is increased to certain value in axle housing, valve block 5a compression preloading spring 4a is pushed up, valve block 5a and the upper end valve body 6a are produced
Raw gap, gas mixture discharge after dust cap 3a from this gap.The structure of the breather plug is relatively simple, Neng Goushi
It now balances axle housing inside and outside air pressure balance and external muddy water, dust is prevented to be splashed into inside axle housing.
It is relatively simple using the rear axle vent valve structure of one-way valve structures at present, although can be realized gas inside and outside balance axle housing
It flattens weighing apparatus and external muddy water, dust is prevented to be splashed into inside axle housing, but as caused by the high-speed gear operating inside axle housing
Lubricating oil splash and oil temperature increase, and the gas mixture of generation increases air pressure in axle housing, it is necessary to be discharged to bridge by breather valve
Outside shell, because the rear axle breather valve of one-way valve structures cannot carry out Oil-gas Separation to the gas mixture being discharged in axle housing, make oil
Gas mixture is discharged to outside axle housing together, and gas mixture can generate oil leak after condensing in outside breather valve in discharge process
The case where, influence the quality of product.
Summary of the invention
The present invention cannot achieve Oil-gas Separation to solve existing breather valve, and the oil liquid in gas mixture is caused to be aggregated
At the fuel-displaced place of breather valve, it is exposed to lead to the problem of oil liquid.
The present invention provides a kind of automobile rear axle vent valve to achieve the goals above, comprising: mounting base is mounted on rear axle
On shell；Valve body is fixed in mounting base, axial in the valve body to be equipped with venthole；Dust cap is fixed on described
The bottom on the top of valve body, the dust cap has gas outlet；Spool is set in venthole, the spool and the ventilation
Cavity between hole is oil-gas separation chamber；Inlet chamber is equipped in the spool, the inlet chamber bottom is communicated with rear axle housing body；Institute
The side wall for stating inlet chamber is equipped with multiple ventholes being connected with Oil-gas Separation room；Upper valve block is movably installed in the spool
Top is used to open or closes oil-gas separation chamber；The oil-gas separation chamber is connected after opening with exhaust outlet；Preloading spring is set
Between valve deck and upper valve block, for controlling the opening pressure of upper valve block；High-pressure oil gas mixture flows out inlet chamber simultaneously through venthole
The side wall for hitting venthole makes Oil-gas Separation.
Preferably, it is intracavitary to be movably installed in the Oil-gas Separation for the inlet chamber；High-pressure oil gas mixed gas drives air inlet
Chamber opens oil-gas separation chamber bottom or top in the intracavitary longitudinal movement of Oil-gas Separation.
Preferably, the upper valve block for blocking venthole one end is equipped on the top of the spool；At the bottom of the spool
End is equipped with the lower disc for blocking the venthole other end；The distance between upper lower disc is greater than the length of venthole.
Preferably, each air inlet is radial is opened on valve body.
Preferably, multiple ventholes are axial is arranged on inlet chamber.
Preferably, the inner wall of the venthole is equipped with helicla flute；The high-pressure oil gas mixture flowed out through venthole is directly made
For the helicla flute.
Preferably, the top of the venthole has helicla flute, and the bottom of venthole and lower disc and valve body surround a ring
Shape oil storage tank.
Preferably, upper valve block is detachably connected with spool, and lower disc and spool are integrally formed.
Effect of the invention is that: this programme in valve body by being arranged oil-gas separation chamber, so that oil liquid is hitting oil gas
It is intracavitary that Oil-gas Separation flowed downwardly to by self gravity after separation chamber side wall, avoids oil liquid from outflowing and blocks gas outlet.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one recorded in the present invention
A little embodiments are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is existing rear axle vent valve structure schematic diagram.
Structural schematic diagram when Fig. 2 is rear axle breather valve closure in the embodiment of the present invention.
Fig. 3 is structural schematic diagram when rear axle breather valve is opened.
In prior art diagram: 1a- rear axle housing body 2a- mounting base 3a- dust cover 4a- preloading spring 5a- valve block 6a-
Valve body
In the present embodiment figure: valve block 6- locking pin 7- on 1- rear axle housing body 2- mounting base 3- spool 4- valve body 5-
Preloading spring 8- dust cover 01- lower disc 02- annular oil storage tank 03- helicla flute 04- exhaust outlet 05- venthole
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing to this hair
It is bright to be further detailed.
It is a kind of automobile rear axle vent valve with Oil-gas Separation provided in an embodiment of the present invention in conjunction with shown in Fig. 2 and Fig. 3,
It is mounted on rear axle housing body；Including mounting base 2, it is mounted on 1 on rear axle housing body.
Valve body 4 is mounted in mounting base 1, axial in valve body 4 to be equipped with venthole.
Dust cap 8, is fixed on the top of valve body 4, and the bottom of dust cap 8 has exhaust outlet 04.
Spool 3 is set in venthole and surrounds an oil-gas separation chamber between venthole；Air inlet is equipped in spool 3
Chamber, inlet chamber bottom are communicated with rear pontic；The side wall of inlet chamber is equipped with multiple ventholes 05 being connected with Oil-gas Separation room.
Upper valve block 5 is movably installed in 3 top of spool, is used to open or closes oil-gas separation chamber；Oil-gas separation chamber is opened
It is connected afterwards with exhaust outlet 04；Preloading spring 7 is set between dust cover 8 and upper valve block 5, for controlling the unlatching pressure of upper valve block 5
Power.Oil gas makes Oil-gas Separation through the side wall that venthole flows out inlet chamber and hits oil-gas separation chamber.This is oil removal process；Exhaust
When, since air pressure increases, valve block 5 is pushed up, upper valve block 5, which is opened, carries out pressure release.That is, by valve body 4
Interior setting oil-gas separation chamber, so that oil liquid flows downwardly to oil-gas separation chamber by self gravity after hitting oil-gas separation chamber side wall
It is interior, it avoids oil liquid from outflowing and blocks gas outlet.
In a preferred embodiment, it is intracavitary that inlet chamber is movably installed in Oil-gas Separation；High-pressure oil gas mixed gas is used for
Drive inlet chamber in the intracavitary longitudinal movement of Oil-gas Separation, to realize the opening at oil-gas separation chamber bottom or top.Specifically,
Upper valve block 5 is fixedly installed in the top of spool 3, for blocking one end of venthole；It is equipped in the bottom end of spool 3 logical for blocking
The lower disc 01 of the stomata other end；The distance between upper and lower valve block is greater than the length of venthole, so that inlet chamber can be transported longitudinally
It is dynamic；Inlet chamber moves upwards, and upper valve block 5 is opened, and is exhausted；Or inlet chamber moves downward, lower disc 01 is opened, to exhaust
It is accumulated in the intracavitary oil liquid of Oil-gas Separation in the process to be recycled, feeds them into rear axle housing.That is, in this scheme,
Upper valve block 5 and lower disc 01 are a step point for oil-gas separation chamber, the opening and closing of the upper and lower ends for controlling oil-gas separation chamber.
Wherein, each venthole 04 is radial is opened on valve body, so that the high-pressure oil gas mixing flowed out from inlet chamber
Gas directly acts on oil-gas separation chamber side wall, so that oil liquid is gathered on the side wall of oil-gas separation chamber；Furthermore, it is understood that more
A venthole 04 is axial to be arranged on inlet chamber, more fully to recycle to high-pressure oil gas mixed gas.
It is highly preferred that the inner wall of venthole is equipped with helicla flute 03 in the present embodiment；High-pressure oil gas through venthole outflow is mixed
Object is closed to directly act on helicla flute 03.In a preferred embodiment, the top of venthole has helicla flute 03, venthole
Bottom and lower disc and valve body surround an annular oil storage tank 02.Since the adhesion on oil liquid and 03 surface of helicla flute is adsorbed onto spiral shell
On 03 surface of spin slot, with the increase of adsorbance, flow under the influence of gravity into annular oil storage tank 02；Certainly, helicla flute 03 can
It is arranged up and down through venthole, its top can also be only set to, as described in above scheme.
Upper valve block 5 is detachably connected with spool 3, and lower disc 01 and spool 3 are integrally formed.Wherein, in the present embodiment, on
5 top of valve block cuts to form the fixing axle that a diameter of axle becomes smaller, lateral in fixing axle to be equipped with locking hole；Upper valve block 5 is installed on
In fixing axle, and it is fixed by locking pin 6.Certainly, can also be used that engagement thread realizes upper valve block and spool can
Dismantling connection.Wherein, lower disc 01 is preferably integrally formed using casting and forming mode with spool 3 and is made.
Lubricating oil splash caused by high-speed gear inside axle housing operates and oil temperature increase, and the gas mixture of generation makes
When air pressure is increased to certain value in rear axle housing body, gas pressure forces spool to compress preloading spring 7 to moving up in rear axle housing body 1
Dynamic, upper valve block 5 is opened with the upper valve 04 that 4 upper surface of valve body is formed, the lower disc that 3 lower part of spool and 4 lower end surface of valve body are formed
01 closes, and gas mixture, to upstream, is entered Oil-gas Separation room by the venthole 05 of spool 3, entered by the inner hole of spool 3
The gas mixture of Oil-gas Separation room blows to the spiral annular groove 03 of valve body 4 first, due to the tiny oil in gas mixture
There is grain certain viscosity will condense on 03 surface of helicla flute, open additionally, due to upper valve 04, and lower valve 01 is closed, by
The small limitation of 3 air inlet of spool, after gas mixture enters Oil-gas Separation room by the venthole 05 on spool 3, space is obtained
Expansion, flow velocity substantially reduce, so that the time of Oil-gas Separation is had guarantee, can achieve sufficient Oil-gas Separation, gas mixture
The gas isolated then the gap between 3 lateral surface of 03 cell wall of helicla flute and spool upwardly through upper valve 04 through on valve body 4
The exhaust outlet 04 of two valve body upper ends on the outside of portion is discharged to outside breather valve, and the tiny oil particles condensed on helicla flute 03 form oil
Liquid is flowed downwardly into along 03 cell wall of helicla flute in the oil storage annular groove 02 of 4 lower end of valve body and the annular oil storage tank of 3 lower end of spool composition,
After pressure reduction in rear axle housing under the action of preloading spring 7, spool 3 is moved down, and upper valve block 04 is closed, extraneous rainwater
It cannot be introduced into rear axle housing with foreign matters such as dusts, lower valve 01 is opened, and oil liquid flows back in rear axle housing in annular oil storage tank, thorough in this way
Bottom avoids oil liquid and is discharged to outside axle housing the case where generating oil leak, the quality of product is improved, simultaneously because after avoiding
Bridge lubricating oil is discharged to the outer caused loss of axle housing, reduces the upkeep cost in user's later period.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability
The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute
The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention
The limitation of claims.
Claims (4)
1. a kind of automobile rear axle vent valve characterized by comprising
Mounting base is mounted on rear axle housing body；
Valve body is fixed in mounting base, axial in the valve body to be equipped with venthole；
Dust cap, is fixed on the top of the valve body, and the bottom of the dust cap has gas outlet；
Spool is set in venthole, and the cavity between the spool and the venthole is oil-gas separation chamber；In the spool
Equipped with inlet chamber, the inlet chamber bottom is communicated with rear axle housing body；The side wall of the inlet chamber is equipped with multiple and Oil-gas Separation room
The venthole being connected；
Upper valve block is movably installed in the spool top, is used to open or closes oil-gas separation chamber；The oil-gas separation chamber is beaten
It is connected after opening with exhaust outlet；
Preloading spring is set between valve deck and upper valve block, for controlling the opening pressure of upper valve block；High-pressure oil gas mixture is through going out
Stomata outflow inlet chamber simultaneously hits the side wall of venthole and makes Oil-gas Separation；
It is intracavitary that the inlet chamber is movably installed in the Oil-gas Separation；High-pressure oil gas mixed gas drives inlet chamber in Oil-gas Separation
Intracavitary longitudinal movement opens oil-gas separation chamber bottom or top；
The upper valve block for blocking venthole one end is equipped on the top of the spool；It is equipped in the bottom end of the spool for sealing
The lower disc of the stifled venthole other end；The distance between upper lower disc is greater than the length of venthole；
The inner wall of the venthole is equipped with helicla flute；The high-pressure oil gas mixture flowed out through venthole directly acts on the spiral
On slot；
The top of the venthole has helicla flute, and the bottom of venthole and lower disc and valve body surround an annular oil storage tank.
2. automobile rear axle vent valve as described in claim 1, which is characterized in that each air inlet it is radial be opened in valve
On body.
3. automobile rear axle vent valve as claimed in claim 2, which is characterized in that multiple ventholes it is axial be arranged in into
On air cavity.
4. automobile rear axle vent valve as described in claim 1, which is characterized in that the upper valve block detachably connects with the spool
It connects, the lower disc and the spool are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721118.7A CN107461481B (en) | 2017-08-21 | 2017-08-21 | A kind of automobile rear axle vent valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710721118.7A CN107461481B (en) | 2017-08-21 | 2017-08-21 | A kind of automobile rear axle vent valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107461481A CN107461481A (en) | 2017-12-12 |
| CN107461481B true CN107461481B (en) | 2019-06-04 |
Family
ID=60549324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710721118.7A Active CN107461481B (en) | 2017-08-21 | 2017-08-21 | A kind of automobile rear axle vent valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107461481B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259922B (en) * | 2019-03-22 | 2023-07-14 | 陕西法士特齿轮有限责任公司 | Be applied to fluid seal cooling device of gearbox air vent |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100507149B1 (en) * | 2002-08-08 | 2005-08-09 | 현대자동차주식회사 | air breather for an automobile transmission |
| CN101761674A (en) * | 2008-12-11 | 2010-06-30 | 刘艳昭 | Wheel valve |
| CN202007722U (en) * | 2011-03-03 | 2011-10-12 | 重庆润通动力有限公司 | Gas vent valve arranged on fuel oil tank of universal gasoline engine |
| CN102152713A (en) * | 2011-03-14 | 2011-08-17 | 广东富华重工制造有限公司 | Air plug structure of drive axle |
| CN202125647U (en) * | 2011-07-07 | 2012-01-25 | 尹捷 | Automobile rear axle vent valve assembly |
| CN202251860U (en) * | 2011-09-08 | 2012-05-30 | 江阴克威齿轮箱制造有限公司 | Vent valve on reduction gearbox |
| CN202392205U (en) * | 2011-10-25 | 2012-08-22 | 比亚迪股份有限公司 | Vent valve and mounting structure thereof |
| CN102705489A (en) * | 2012-06-13 | 2012-10-03 | 三一重工股份有限公司 | Ventilation plug and vehicle axle with same |
| CN103061883A (en) * | 2013-01-19 | 2013-04-24 | 昆山允可精密工业技术有限公司 | Anti-explosion valve for engines |
| CN203560533U (en) * | 2013-11-01 | 2014-04-23 | 尹捷 | Car rear axle vent valve assembly |
| CN203906743U (en) * | 2014-06-19 | 2014-10-29 | 东风汽车公司 | Novel normally closed type air plug |
-
2017
- 2017-08-21 CN CN201710721118.7A patent/CN107461481B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107461481A (en) | 2017-12-12 |
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