CN103244709A - Pressure regulating valve - Google Patents
Pressure regulating valve Download PDFInfo
- Publication number
- CN103244709A CN103244709A CN2013101618717A CN201310161871A CN103244709A CN 103244709 A CN103244709 A CN 103244709A CN 2013101618717 A CN2013101618717 A CN 2013101618717A CN 201310161871 A CN201310161871 A CN 201310161871A CN 103244709 A CN103244709 A CN 103244709A
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- valve body
- impact
- projection
- applying
- 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
Images
Landscapes
- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a pressure regulating valve which comprises a valve body, a cover plate, a regulating membrane, a spring, an impact-resistant membrane and a fitting membrane. A first protrusion is arranged at the bottom of the valve body, a plurality of second through holes which are communicated with an air outlet joint are arranged on the first protrusion, and the impact-resistant membrane is mounted on the first protrusion, is positioned on the lower side of the first protrusion, and can cover all the second through holes on the first protrusion when the impact-resistant membrane fits with the first protrusion; and the fitting membrane is positioned in the valve body, one end of the fitting membrane is connected with the regulating membrane, the other end of the fitting membrane is connected with the bottom of the valve body, and the fitting membrane can cover all the second through holes on the first protrusion when fitting with the first protrusion. The pressure regulating valve has the advantages that the pressure regulating valve is simple in structure and high in regulating speed and reliability, internal abrasion and collision caused under an idling working condition or in a procedure for switching a current working condition into the idling working condition can be prevented, and parts inside the valve body are prevented from being damaged by reverse impact due to backfire of an intake manifold.
Description
Technical field
The present invention relates to the engine crankshaft ventilation system parts, be specifically related to a kind of pressure regulator valve.
Background technique
Pressure regulator valve is the critical piece of crankcase ventilation system, and it mainly acts on is that the piston gas blowby is fed gas handling system, when valve outlet has excessive air-intake negative-pressure, regulates gas blowby feeding amount, with the pressure stability before the maintaining valve and be slightly less than barometric pressure.
General " structure that has the crankcase pressure control valve of crooked joint " (publication number is CN 1944970A) that adopts as the Chinese patent literature record of available engine, this pressure regulator valve simple in structure, it comprises having bowl-shape valve body, and it is at upper opening; Cover plate seals the top of described valve body; Diaphragm is installed in the bottom of described cover plate; The air induction hose joint stretches out downwards from the bottom of described valve body, and is connected on the air induction hose; The protruding pipe of throttling protrudes upward from the inside of described valve body, and is communicated with described air induction hose joint, and the protruding terminus of the protruding pipe of wherein said throttling forms the throttle orifice towards the lower openings of described diaphragm; Crooked joint, it is shaped as from the extension that is inclined upwardly of the sidewall of described valve body, and is connected on the steam hose; By-pass hole is formed on the sidewall of the protruding pipe of described throttling; Machining hole is formed on the sidewall of described valve body, so as to allow from the outer linear of valve body enter in the described by-pass hole; And obstruction, with described machining hole sealing.But there is following problem in the modulating valve of this structure: diaphragm is when regulating gas blowby feeding amount, and its displacement amount that moves up and down is big, and the pressure governing speed is slow, instability, and its reliability had a negative impact; In addition, when changing in idling or to idling operation, the diaphragm bottom needs to engage with valve body, easily produces wearing and tearing for a long time, when fierceness is regulated even produce and collide, makes a noise or diaphragm ruptures.Available engine also has " a kind of novel diaphragm type PCV valve " (publication number is CN201148890) that adopts as the Chinese patent literature record, the complex structure of this diaphragm type PCV valve, it comprises diaphragm, support and housing, be positioned at the following of diaphragm and support connection and be provided with the little spring support, little spring is positioned at the little spring support and contacts with diaphragm.Though the modulating valve governing speed of this structure can be guaranteed, but still can't avoid contacting and impact of little spring support and lower casing.
Development along with fuel-economizing trend, available engine has been installed Variable Valve Time more and more, its unfavorable aspect is that the timing accuracy descends, easily cause igniting unusual when abnormal conditions occurring, the situation of backfiring in intake manifold, this makes pressure regulator valve need bear reverse pulsing airflow impact when work, and the anti-reverse impact power ability of above-mentioned two kinds of pressure regulator valves is all relatively poor, easily cause inner body displacement or diaphragm impaired when slight, can cause the housing explosion when serious.
Therefore, need carry out modification to existing pressure regulator valve.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structure, governing speed is fast, reliability is high pressure regulator valve, and can avoid idling or inter deterioration and collision when changing to idling operation, and the reverse impact that produces of backfiring in intake manifold is to the destruction of valve inner part.
Pressure regulator valve of the present invention comprises:
One valve body, the upper opening of this valve body, and the sidewall of valve body has outward extending air input joint, and the bottom of valve body has the air outlet adapter of downward extension;
One cover plate seals the top of described valve body, on the cover board is provided with first through hole;
One regulates diaphragm, is installed between described cover plate and the valve body;
One spring is arranged on and regulates between diaphragm and the valve body;
The bottom of described valve body has the first inside projection with the air outlet adapter corresponding position, and is provided with a plurality of second through holes that are communicated with air outlet adapter in first projection;
Also comprise an anti-impact diaphragm and an applying diaphragm;
Described anti-impact diaphragm is installed on first projection, and is positioned at the below of first projection, and when anti-impact diaphragm and the first projection applying, the anti-impact diaphragm can cover all second through holes on first projection;
Described applying diaphragm is positioned at valve body, and an end of applying diaphragm is connected with the adjusting diaphragm, and the other end of applying diaphragm is connected with the bottom of valve body, and when applying diaphragm and the first projection applying, the applying diaphragm can cover all second through holes on first projection.
Top end at the valve body top edge is provided with annular groove, and the edge of described adjusting diaphragm is absorbed in the annular groove, and compresses by cover plate.
Described anti-impact diaphragm is circular, and this anti-impact diaphragm is installed on first projection by back-off.
One end of described applying diaphragm is bonded in the bottom of regulating diaphragm, and the other end of applying diaphragm is installed on the bottom of valve body by back-off.
Described cover plate is circular dull and stereotyped.
Described spring is tension spring.
Described adjusting diaphragm is circular, and its middle part is provided with the second downward projection.
Described adjusting diaphragm is made by fluorine rubber.
Effective effect of the present invention:
(1) end of applying diaphragm is connected with the adjusting diaphragm, the other end of applying diaphragm is connected with the bottom of valve body, the micro-displacement of regulating diaphragm just can drive the displacement significantly of applying diaphragm, fast so regulate the speed, the reliability height, and whole pressure regulation process is by the applying of applying diaphragm and first projection or separates to realize, when changing in idling or to idling operation, can effectively avoid sharply descending to wearing and tearing and the collision of valve body and inner body because of the absolute pressure at exhaust joint place.
(2) the anti-impact diaphragm is positioned at the below of first projection, and when the reverse impact air-flow, the anti-impact diaphragm fits on first projection, when backfiring in intake manifold, can effectively avoid the reverse impact air-flow to the impact of valve body and inner body.
(3) first projectioies are one-body molded with valve body, and intensity is higher, phenomenon can not occur damaging, thereby improve reliability.
(4) simple in structure.
Description of drawings
Fig. 1 is internal structure schematic representation of the present invention;
Fig. 2 is along the sectional view (non-fit-state) of A-A line among Fig. 1;
Fig. 3 is along the sectional view (fit-state and shock resistance state) of A-A line among Fig. 1;
Fig. 4 is the structural representation of first projection among Fig. 1.
Embodiment
Now by reference to the accompanying drawings the present invention is described in further detail.
Pressure regulator valve as shown in Figures 1 to 4 comprises:
One valve body 1, the upper opening of this valve body 1, and the sidewall of valve body 1 has outward extending air input joint 1c, and the bottom of valve body 1 has the air outlet adapter 1d of downward extension;
One cover plate 3 seals the top of described valve body 1, and this cover plate 3 is circular dull and stereotyped, which is provided with the first through hole 3a;
One regulates diaphragm 2, and this regulates diaphragm 2 is circular, is made by fluorine rubber, be provided with the second downward protruding 2a at the middle part of regulating diaphragm 2, top end at valve body 1 top edge is provided with annular groove 1g, and the edge of described adjusting diaphragm 2 is absorbed in the annular groove 1g, and compresses by cover plate 3;
One spring 5, this spring 5 is tension spring, is arranged on to regulate between diaphragm 2 and the valve body 1;
Also comprise an anti-impact diaphragm 6 and an applying diaphragm 4;
The bottom of described valve body 1 has the first inside protruding 1a with air outlet adapter 1d corresponding position, and be provided with a plurality of second through hole 1f that are communicated with air outlet adapter 1d at the first protruding 1a, described anti-impact diaphragm 6 is circular, this anti-impact diaphragm 6 is installed on the first protruding 1a by back-off 1b, and be positioned at the below of the first protruding 1a, when anti-impact diaphragm 6 and the first protruding 1a fitted, anti-impact diaphragm 6 can cover all the second through hole 1f on the first protruding 1a;
Described applying diaphragm 4 is positioned at valve body 1, and an end of applying diaphragm 4 is bonded in the bottom of regulating diaphragm 2, and the other end of applying diaphragm 4 is installed on the bottom of valve body 1 by back-off 1b.When applying diaphragm 4 and the first protruding 1a fitted, applying diaphragm 4 can cover all the second through hole 1f on the first protruding 1a.
As shown in Figure 2, when the piston gas blowby enters pressure regulator valve from air input joint 1c, the absolute pressure of air input joint 1c place gas rises, to regulating the active force increase that diaphragm 2 makes progress, regulating diaphragm 2 moves up, drive on the applying diaphragm 4 and move, the gap of applying diaphragm 4 and the first protruding 1a increases, and gas blowby is discharged from air outlet adapter 1d by the second through hole 1f on the first protruding 1a and the gap of the first protruding 1a and anti-impact diaphragm 6.
When the piston gas blowby more for a long time, the absolute pressure of air input joint 1c place gas rises obviously, short time even surpass barometric pressure, at this moment, to regulating the active force maximum that diaphragm 2 makes progress, regulate on the diaphragm 2 and move on to the extreme higher position, drive on the applying diaphragm 4 and move, make the gap maximum of applying diaphragm 4 and the first protruding 1a, air-flow is discharged, at this moment rapidly by the gap of the second through hole 1f on the first protruding 1a and the first protruding 1a and anti-impact diaphragm 6 from air outlet adapter 1d, the absolute pressure of the gas at air input joint 1c place since throughput greater than silting up, to drop to below the barometric pressure, thereby control the absolute pressure upper limit at air input joint 1c place, and be slightly less than barometric pressure.
As shown in Figure 3, when changing at idling operation or to idling operation, the absolute pressure of air outlet adapter 1d sharply descends, to regulating the active force decline that diaphragm 2 makes progress, barometric pressure makes that regulating diaphragm 2 moves down, driving applying diaphragm 4 moves down, the gap of applying diaphragm 4 and the first protruding 1a reduces, at this moment, only there is a small amount of gas blowby to discharge from air outlet adapter 1d by the gap of two through hole 1f on the first protruding 1a and the first protruding 1a and anti-impact diaphragm 6, fits fully until applying diaphragm 4 and the first protruding 1a, all second through hole 1f that applying diaphragm 4 covers on the first protruding 1a, at this moment, air-flow can't pass through, and the absolute pressure of the gas at air input joint 1c place is silted up gradually, will rise until barometric pressure, thereby controlled the absolute pressure lower limit at air input joint 1c place, and be no more than barometric pressure.
When backfiring in intake manifold, air-flow upwards appears in air outlet adapter 1d, this moment, 6 meetings of anti-impact diaphragm were fitted with the first protruding 1a, cover all the second through hole 1f on the first protruding 1a, air-flow can't be passed through, impact force action is on anti-impact diaphragm 6 and the first protruding 1a, because the first protruding 1a and valve body 1 are one-body molded, intensity is higher, phenomenon can not occur damaging, thereby improve reliability.
Claims (8)
1. pressure regulator valve comprises:
One valve body (1), the upper opening of this valve body (1), and the sidewall of valve body (1) has outward extending air input joint (1c), and the bottom of valve body (1) has the air outlet adapter (1d) of downward extension;
One cover plate (3) seals the top of described valve body (1), is provided with first through hole (3a) at cover plate (3);
One regulates diaphragm (2), is installed between described cover plate (3) and the valve body (1);
One spring (5) is arranged on and regulates between diaphragm (2) and the valve body (1);
The bottom of described valve body (1) has inside first projection (1a) with air outlet adapter (1d) corresponding position, and is provided with a plurality of second through holes (1f) that are communicated with air outlet adapter (1d) in first projection (1a),
It is characterized in that:
Also comprise an anti-impact diaphragm (6) and an applying diaphragm (4);
Described anti-impact diaphragm (6) is installed on first projection (1a), and be positioned at the below of first projection (1a), when anti-impact diaphragm (6) was fitted with first projection (1a), anti-impact diaphragm (6) can cover all second through holes (1f) on first projection (1a);
Described applying diaphragm (4) is positioned at valve body (1), one end of applying diaphragm (4) is connected with adjusting diaphragm (2), the other end of applying diaphragm (4) is connected with the bottom of valve body (1), when applying diaphragm (4) was fitted with first projection (1a), applying diaphragm (4) can cover all second through holes (1f) on first projection (1a).
2. pressure regulator valve according to claim 1, it is characterized in that: the top end at valve body (1) top edge is provided with annular groove (1g), and the edge of described adjusting diaphragm (2) is absorbed in the annular groove (1g), and compresses by cover plate (3).
3. pressure regulator valve according to claim 1 and 2 is characterized in that: described anti-impact diaphragm (6) is for circular, and this anti-impact diaphragm (6) is installed on first projection (1a) by back-off (1b).
4. pressure regulator valve according to claim 1 and 2 is characterized in that: an end of described applying diaphragm (4) is bonded in the bottom of regulating diaphragm (2), and the other end of applying diaphragm (4) is installed on the bottom of valve body (1) by back-off (1b).
5. pressure regulator valve according to claim 1 and 2 is characterized in that: described cover plate (3) is for circular dull and stereotyped.
6. pressure regulator valve according to claim 1 and 2, it is characterized in that: described spring (5) is tension spring.
7. pressure regulator valve according to claim 1 and 2 is characterized in that: described adjusting diaphragm (2) is for circular, and its middle part is provided with downward second projection (2a).
8. pressure regulator valve according to claim 7, it is characterized in that: described adjusting diaphragm (2) is made by fluorine rubber.
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 true CN103244709A (en) | 2013-08-14 |
| CN103244709B 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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107532731A (en) * | 2015-05-06 | 2018-01-02 | 曼·胡默尔有限公司 | For adjusting or controlling the unit of Fluid pressure |
| CN110439405A (en) * | 2017-09-17 | 2019-11-12 | 曹云霞 | A kind of damper of slide guide device |
| CN110439408A (en) * | 2017-09-17 | 2019-11-12 | 曹云霞 | A kind of slide 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 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107532731A (en) * | 2015-05-06 | 2018-01-02 | 曼·胡默尔有限公司 | For adjusting or controlling the unit of Fluid pressure |
| 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 |
| CN110439408A (en) * | 2017-09-17 | 2019-11-12 | 曹云霞 | A kind of slide guide device |
| CN110439410A (en) * | 2017-09-17 | 2019-11-12 | 曹云霞 | A kind of damper of slide guide device |
| CN110469224A (en) * | 2017-09-17 | 2019-11-19 | 曹云霞 | A kind of damper of slide guide device |
| CN110485843A (en) * | 2017-09-17 | 2019-11-22 | 曹云霞 | A kind of damper of slide guide device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103244709B (en) | 2017-08-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103244709A (en) | Pressure regulating valve | |
| CN1133909C (en) | Elastomeric element valve | |
| US9587751B2 (en) | Flow control valves | |
| CA2791429A1 (en) | Valve for control of a gas stream, fluid separator, ventilation system as well as combustion engine with such valve | |
| US20140054486A1 (en) | Flow control valve | |
| US20130105009A1 (en) | Flow control valve | |
| US9988957B2 (en) | Ventilation system for an internal combustion engine | |
| JP6493060B2 (en) | PCV valve | |
| US8356587B2 (en) | PCV valve guide | |
| CN201486862U (en) | Internal pressure ratio adjusting device of screw type compressor | |
| US20170145878A1 (en) | Pressure regulator assemblies | |
| CN204961016U (en) | Spiral oil and gas separator and engine assembly | |
| CN201148890Y (en) | Novel diaphragm type PCV valve | |
| CN207893169U (en) | A kind of gs-oil separator pressure-regulating valve | |
| CN108049939B (en) | Oil-gas separator | |
| CN111425278B (en) | Oil-gas separator assembly | |
| CN202250467U (en) | Fuel saving device for controlling opening/closing of atmosphere balance hole of carburetor | |
| CN221169696U (en) | Oil-gas separation module based on atmospheric pressure self-adjustment flow cross section | |
| CN201786664U (en) | Pneumatic control overflowing system for movable screw compressor | |
| CN218816594U (en) | Oil-gas separator module and oil-gas separator | |
| CN202273728U (en) | Oil-gas separation device of engine | |
| CN202645676U (en) | Engine crank case breathing valve and breathing device | |
| CN101943165B (en) | Pneumatic control overflow system for mobile screw compressor | |
| JP2020051332A (en) | Blow-by gas treatment device | |
| JP6087322B2 (en) | Actuator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |