CN103244709B - Pressure-regulating valve - Google Patents
Pressure-regulating valve Download PDFInfo
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- CN103244709B CN103244709B CN201310161871.7A CN201310161871A CN103244709B CN 103244709 B CN103244709 B CN 103244709B CN 201310161871 A CN201310161871 A CN 201310161871A CN 103244709 B CN103244709 B CN 103244709B
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Abstract
The present invention relates to a kind of pressure-regulating valve, including valve body, cover plate, regulation diaphragm, spring, anti-impact diaphragm and laminating diaphragm；The bottom of valve body has the first projection, multiple the second through holes connected with air outlet adapter are provided with the first projection, anti-impact diaphragm is arranged in the first projection, and positioned at the first raised lower section, when anti-impact diaphragm is fitted with the first projection, anti-impact diaphragm can cover all second through holes in the first projection；Diaphragm of fitting is located in valve body, and one end of laminating diaphragm is connected with regulation diaphragm, and the other end for diaphragm of fitting and the bottom of valve body are connected, and when diaphragm of fitting is fitted with the first projection, laminating diaphragm can cover all second through holes in the first projection.Simple in construction, governing speed of the invention is fast, reliability is high, it is to avoid idling or to idling operation change when inter deterioration and collision, and destruction of the reverse impact that produces of backfiring in intake manifold to valve inner part.
Description
Technical field
The present invention relates to engine crankshaft ventilation system part, and in particular to a kind of pressure-regulating valve.
Background technology
Pressure-regulating valve is the critical piece of crankcase ventilation system, and its main function is that piston gas blowby is passed through into air inlet system
System, when valve outlet has excessive air-intake negative-pressure, adjusts gas blowby intake, to keep the pressure stability before valve and be slightly less than big
Air pressure.
Available engine typically " carries the crankcase pressure control valve of crooked joint using what such as Chinese patent literature was recorded
Structure "（Publication No. CN 1944970A）, this pressure-regulating valve it is simple in construction, it include have bowl-shape valve body, its
In upper opening；Cover plate, closes the top of the valve body；Diaphragm, installed in the bottom of the cover plate；Air induction hose joint,
Extend downwardly from, and be connected on air induction hose from the bottom of the valve body；Throttle convex pipe, is stretched upwards from the inside of the valve body
Go out, and with the air induction hose fittings, wherein the jag formation of the convex pipe of the throttling is towards the bottom of the diaphragm
The throttle orifice of opening；Crooked joint, it is shaped as being inclined upwardly extension from the side wall of the valve body, and is connected to steam hose
On；By-pass prot, is formed on the side wall of the convex pipe of throttling；Process hole, formed on the side wall of the valve body, so as to allow from
Enter in the by-pass prot to the outer linear of valve body；And blocking, the processing hole is closed.But the regulating valve of this structure is deposited
In problems with：Diaphragm is when adjusting gas blowby intake, and moving displacement amount is big above and below it, and pressure governing speed is slow, unstable,
And have a negative impact to its reliability；In addition, in idling or when being changed to idling operation, diaphragm bottom need to connect with valve body
Close, abrasion is also easy to produce for a long time, even collision is produced in fierceness regulation, make a noise or diaphragm fracture.Available engine
There is " a kind of Novel diaphragm type PCV valve " recorded using such as Chinese patent literature（Publication No. CN201148890）, this diaphragm
Formula Pcv valve it is complicated, it includes diaphragm, support and housing, below diaphragm with support connection be provided with small bullet
Spring bracket, little spring is located in little spring support and is in contact with diaphragm.Though the regulating valve governing speed of this structure can be obtained
Ensure, but still contact and impact of the little spring support with lower casing can not be avoided.
With the development of fuel-economizing trend, available engine is mounted with VVT more and more, and its is unfavorable
Aspect is that timing accuracy declines, and occurs easily causing igniting exception during abnormal conditions, the situation of backfiring in intake manifold, this causes
Pressure-regulating valve is operationally subjected to reverse air pulse impact, and the anti-reflective of above two pressure-regulating valve is to impulsive force
Ability is poor, and inner body displacement is easily caused when slight or diaphragm is impaired, housing can be caused to burst when serious.
Accordingly, it would be desirable to be modified to existing pressure-regulating valve.
The content of the invention
It is an object of the invention to provide a kind of pressure-regulating valve that simple in construction, governing speed is fast, reliability is high, and it can keep away
Exempt from idling or to idling operation change when inter deterioration and collision, and backfiring in intake manifold produce reverse impact to valve body
The destruction of inner body.
Pressure-regulating valve of the present invention, including：
The side wall of one valve body, the upper opening of the valve body, and valve body has the inlet suction port stretched out, the bottom of valve body
With the air outlet adapter extended downwardly；
One cover plate, closes the top of the valve body, on the cover board provided with first through hole；
One regulation diaphragm, is installed between the cover plate and valve body；
One spring, is arranged between regulation diaphragm and valve body；
The bottom of the valve body has inside first raised with air outlet adapter corresponding position, and in the first projection
Provided with multiple the second through holes connected with air outlet adapter；
Also include an anti-impact diaphragm and a laminating diaphragm；
The anti-impact diaphragm is arranged in the first projection, and positioned at the first raised lower section, it is convex in anti-impact diaphragm and first
When playing laminating, anti-impact diaphragm can cover all second through holes in the first projection；
The laminating diaphragm is located in valve body, and the one end for diaphragm of fitting is connected with regulation diaphragm, the other end for diaphragm of fitting
Be connected with the bottom of valve body, fit diaphragm with first it is raised fit when, diaphragm of fitting can cover all the in the first projection
Two through holes.
Annular groove is provided with the top end face of valve body top edge, the edge of the regulation diaphragm is absorbed in annular groove,
And compressed by cover plate.
The anti-impact diaphragm is circle, and the anti-impact diaphragm is arranged in the first projection by back-off.
One end of the laminating diaphragm is bonded in the bottom of regulation diaphragm, and the other end of laminating diaphragm is arranged on by back-off
On the bottom of valve body.
The cover plate is circular flat board.
The spring is tension spring.
The regulation diaphragm is circle, and its middle part is raised provided with downward second.
The regulation diaphragm is made up of fluorubber.
Effective effect of the present invention：
（1）One end of laminating diaphragm is connected with regulation diaphragm, and the other end for diaphragm of fitting and the bottom of valve body are connected, regulation
The micro-displacement of diaphragm can just drive the significantly displacement of laminating diaphragm, therefore it is fast to regulate the speed, and reliability is high, and whole pressure regulation
Process is realized by diaphragm and the first raised laminating or separate of fitting, in idling or when being changed to idling operation, energy
Enough it is prevented effectively from the absolute pressure at because of exhaust joint and drastically declines abrasion and collision to valve body and inner body.
（2）Anti-impact diaphragm is located at the first raised lower section, and when there is reverse impact air-flow, it is convex that anti-impact diaphragm fits to first
On rising, when backfiring in intake manifold, impact of the reverse impact air-flow to valve body and inner body can be prevented effectively from.
（3）First projection is to be integrally formed with valve body, and intensity is higher, is not in damage phenomenon, so as to improve reliable
Property.
（4）It is simple in construction.
Brief description of the drawings
Fig. 1 is the internal structure schematic diagram of the present invention；
Fig. 2 is the sectional view along A-A lines in Fig. 1（Non- fit-state）；
Fig. 3 is the sectional view along A-A lines in Fig. 1（Fit-state and shock resistance state）；
Fig. 4 is the first raised structural representation in Fig. 1.
Embodiment
The present invention is described in further detail in conjunction with accompanying drawing.
Pressure-regulating valve as shown in Figures 1 to 4, including：
The side wall of one valve body 1, the upper opening of the valve body 1, and valve body 1 has the inlet suction port 1c stretched out, valve body 1
Bottom there is the air outlet adapter 1d that extends downwardly；
One cover plate 3, closes the top of the valve body 1, and the cover plate 3 is circular flat board, which is provided with first through hole 3a；
One regulation diaphragm 2, the regulation diaphragm 2 is circle, is made up of fluorubber, at the middle part of regulation diaphragm 2 provided with downward
The second projection 2a, on the top end face of the top edge of valve body 1 be provided with annular groove 1g, the edge of the regulation diaphragm 2 is absorbed in ring
In connected in star 1g, and compressed by cover plate 3；
One spring 5, the spring 5 is tension spring, is arranged between regulation diaphragm 2 and valve body 1；
Also include an anti-impact diaphragm 6 and a laminating diaphragm 4；
The bottom of the valve body 1 has the first inside projection 1a with air outlet adapter 1d corresponding positions, and first
Raised 1a is provided with multiple the second through hole 1f connected with air outlet adapter 1d, and the anti-impact diaphragm 6 is circle, the anti-impact diaphragm 6
It is arranged on by back-off 1b on the first projection 1a, and positioned at the first projection 1a lower section, in the projection of anti-impact diaphragm 6 and first 1a patches
During conjunction, anti-impact diaphragm 6 can cover all second through hole 1f on the first projection 1a；
The laminating diaphragm 4 is located in valve body 1, and one end of laminating diaphragm 4 is bonded in the bottom of regulation diaphragm 2, laminating film
The other end of piece 4 is arranged on by back-off 1b on the bottom of valve body 1.When diaphragm 4 of fitting is fitted with the first projection 1a, laminating film
Piece 4 can cover all second through hole 1f on the first projection 1a.
As shown in Fig. 2 when there is piston gas blowby to enter pressure-regulating valve from inlet suction port 1c, gas at inlet suction port 1c
Absolute pressure rises, and the active force increase upward to regulation diaphragm 2, regulation diaphragm 2 is moved up, and drives laminating diaphragm 4 to move up,
The projection of diaphragm 4 and first of fitting 1a gap increase, gas blowby passes through the projections of the second through hole 1f and first 1a on the first projection 1a
Discharged with the gap of anti-impact diaphragm 6 from air outlet adapter 1d.
When piston gas blowby is more, the absolute pressure of gas rises substantially at inlet suction port 1c, and the short time is even more than greatly
Air pressure, now, the active force upward to regulation diaphragm 2 are maximum, and extreme higher position is moved on on regulation diaphragm 2, drive on laminating diaphragm 4
Move, make the projection of laminating diaphragm 4 and first 1a gap maximum, make air-flow run through the second through hole 1f on the first projection 1a and
First projection 1a and anti-impact diaphragm 6 gap are discharged from air outlet adapter 1d, now, the absolute pressure of the gas at inlet suction port 1c
Silt up because throughput is more than, will settle to below atmospheric pressure, so that the absolute pressure upper limit at inlet suction port 1c is controlled, and
It is slightly less than atmospheric pressure.
As shown in figure 3, in idling operation or when being changed to idling operation, air outlet adapter 1d absolute pressure drastically declines,
The active force upward to regulation diaphragm 2 declines, and atmospheric pressure causes regulation diaphragm 2 to move down, and drives laminating diaphragm 4 to move down, pastes
The projection of diaphragm 4 and first 1a gap reduction is closed, now, only a small amount of gas blowby passes through two through hole 1f on the first projection 1a and the
One projection 1a and anti-impact diaphragm 6 gap are discharged from air outlet adapter 1d, until laminating diaphragm 4 is fitted completely with the first projection 1a,
Diaphragm 4 of fitting covers all second through hole 1f on the first projection 1a, and now, air-flow can not pass through, the gas at inlet suction port 1c
The absolute pressure of body is gradually silted up, will be risen up to atmospheric pressure, so that the absolute pressure lower limit at inlet suction port 1c is controlled, and
No more than atmospheric pressure.
When backfiring in intake manifold, there is upward air-flow in air outlet adapter 1d, and now anti-impact diaphragm 6 can be with the first projection 1a
All second through hole 1f on laminating, the first projection 1a of covering, make air-flow not pass through, impact force action is in the He of anti-impact diaphragm 6
On first projection 1a, because the first projection 1a and valve body 1 are to be integrally formed, intensity is higher, is not in damage phenomenon, so as to carry
High reliability.
Claims (8)
1. a kind of pressure-regulating valve, including：
One valve body（1）, the valve body（1）Upper opening, and valve body（1）Side wall there is the inlet suction port that stretches out（1c）,
Valve body（1）Bottom there is the air outlet adapter that extends downwardly（1d）；
One cover plate（3）, close the valve body（1）Top, in cover plate（3）It is provided with first through hole（3a）；
One regulation diaphragm（2）, it is installed in the cover plate（3）With valve body（1）Between；
One spring（5）, it is arranged on regulation diaphragm（2）With valve body（1）Between；
The valve body（1）Bottom with air outlet adapter（1d）Corresponding position has inside first raised（1a）, and
One is raised（1a）It is provided with multiple and air outlet adapter（1d）Second through hole of connection（1f）,
It is characterized in that：
Also include an anti-impact diaphragm（6）With a laminating diaphragm（4）；
The anti-impact diaphragm（6）It is raised installed in first（1a）On, and it is raised positioned at first（1a）Lower section, in anti-impact diaphragm
（6）It is raised with first（1a）During laminating, anti-impact diaphragm（6）First can be covered raised（1a）On all second through holes（1f）；
The laminating diaphragm（4）Positioned at valve body（1）It is interior, diaphragm of fitting（4）One end with regulation diaphragm（2）Connection, diaphragm of fitting
（4）The other end and valve body（1）Bottom connection, laminating diaphragm（4）It is raised with first（1a）During laminating, diaphragm of fitting（4）
First can be covered raised（1a）On all second through holes（1f）.
2. pressure-regulating valve according to claim 1, it is characterised in that：In valve body（1）The top end face of top edge is provided with
Annular groove（1g）, the regulation diaphragm（2）Edge be absorbed in annular groove（1g）It is interior, and pass through cover plate（3）Compress.
3. pressure-regulating valve according to claim 1 or 2, it is characterised in that：The anti-impact diaphragm（6）For circle, this resists
Rush diaphragm（6）Pass through back-off（1b）It is raised installed in first（1a）On.
4. pressure-regulating valve according to claim 1 or 2, it is characterised in that：The laminating diaphragm（4）One end be bonded in
Adjust diaphragm（2）Bottom, fit diaphragm（4）The other end pass through back-off（1b）Installed in valve body（1）Bottom on.
5. pressure-regulating valve according to claim 1 or 2, it is characterised in that：The cover plate（3）For circular flat board.
6. pressure-regulating valve according to claim 1 or 2, it is characterised in that：The spring（5）For tension spring.
7. pressure-regulating valve according to claim 1 or 2, it is characterised in that：The regulation diaphragm（2）For circle, wherein
Portion is raised provided with downward second（2a）.
8. pressure-regulating valve according to claim 7, it is characterised in that：The regulation diaphragm（2）It is made up of fluorubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310161871.7A CN103244709B (en) | 2013-05-06 | 2013-05-06 | Pressure-regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310161871.7A CN103244709B (en) | 2013-05-06 | 2013-05-06 | Pressure-regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103244709A CN103244709A (en) | 2013-08-14 |
| CN103244709B true CN103244709B (en) | 2017-08-25 |
Family
ID=48924446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310161871.7A Active CN103244709B (en) | 2013-05-06 | 2013-05-06 | Pressure-regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103244709B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015005692A1 (en) * | 2015-05-06 | 2016-11-10 | Mann + Hummel Gmbh | Pressure control valve |
| CN106194330A (en) * | 2016-08-31 | 2016-12-07 | 广西玉柴机器股份有限公司 | A kind of engine crankcase pressure maintaining valve |
| CN110439405A (en) * | 2017-09-17 | 2019-11-12 | 曹云霞 | A kind of damper of slide guide device |
| CN107816275B (en) * | 2017-09-17 | 2020-07-24 | 台州市路桥巨展塑胶有限公司 | Sliding guide device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835576A (en) * | 1994-07-25 | 1996-02-06 | Nippon Sharyo Seizo Kaisha Ltd | Drain valve for air conditioner on railroad rolling stock |
| JPH08100930A (en) * | 1994-09-30 | 1996-04-16 | Iwatsuku:Kk | Drain valve for cooler drain |
| CN1944970A (en) * | 2005-10-06 | 2007-04-11 | 现代自动车株式会社 | Structure of crankcase pressure control valve with bent nipple |
| CN201173389Y (en) * | 2008-04-07 | 2008-12-31 | 谷红军 | Indoor gas pressure regulator |
| CN101990611A (en) * | 2008-04-09 | 2011-03-23 | 液体成型系统公司 | Valve assembly |
-
2013
- 2013-05-06 CN CN201310161871.7A patent/CN103244709B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0835576A (en) * | 1994-07-25 | 1996-02-06 | Nippon Sharyo Seizo Kaisha Ltd | Drain valve for air conditioner on railroad rolling stock |
| JPH08100930A (en) * | 1994-09-30 | 1996-04-16 | Iwatsuku:Kk | Drain valve for cooler drain |
| CN1944970A (en) * | 2005-10-06 | 2007-04-11 | 现代自动车株式会社 | Structure of crankcase pressure control valve with bent nipple |
| CN201173389Y (en) * | 2008-04-07 | 2008-12-31 | 谷红军 | Indoor gas pressure regulator |
| CN101990611A (en) * | 2008-04-09 | 2011-03-23 | 液体成型系统公司 | Valve assembly |
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| Publication number | Publication date |
|---|---|
| CN103244709A (en) | 2013-08-14 |
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