CN107763296A - For the pressure regulation pilot mechanism in pneumatic system - Google Patents
For the pressure regulation pilot mechanism in pneumatic system Download PDFInfo
- Publication number
- CN107763296A CN107763296A CN201610678927.XA CN201610678927A CN107763296A CN 107763296 A CN107763296 A CN 107763296A CN 201610678927 A CN201610678927 A CN 201610678927A CN 107763296 A CN107763296 A CN 107763296A
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- China
- Prior art keywords
- diaphragm
- connecting seat
- valve body
- threaded rod
- respiratory cavity
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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
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/126—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like
- F16K31/1262—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded
- F16K31/1264—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a diaphragm, bellows, or the like one side of the diaphragm being spring loaded with means to allow the side on which the springs are positioned to be altered
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a kind of pressure regulation pilot mechanism being used in pneumatic system, including valve body, push rod and threaded rod, also include diaphragm, the valve body and diaphragm surround respiratory cavity, stomata is further opened with valve body, the end of threaded rod is also fixedly connected with elastic component, connecting seat is also fixedly connected with diaphragm, elastic component is fixedly connected with connecting seat, and push rod is fixed on the side that diaphragm deviates from respiratory cavity；It is additionally provided with sealing ring on the side of connecting seat, respiratory cavity is divided into epicoele and cavity of resorption by the sealing ring and connecting seat, and the tie point of threaded rod and elastic component is located at upper intracavitary, and stomata is located at lower intracavitary, and spiracle is additionally provided with the side wall of epicoele.The present invention is simple in construction, and the main valve using the present invention has good output pressure Adjustment precision；In the present invention, the lever movement locus for braking main valve is relatively stable, beneficial to the stability of main valve performance；That is pilot mechanism of the above structure as control bound, safe low-loss operation can be achieved.
Description
Technical field
The present invention relates to compressed gas decompressor field, more particularly to a kind of pressure regulation guide being used in pneumatic system
Mechanism.
Background technology
As combustion gas is with more and more extensive, various forms of pressure-reducing valves are emerged in an endless stream, and gas pressure-reducing valve arrangement is entered
One-step optimization will further promote the utilization of combustion gas.By taking environmental consciousness as an example, the fuel that combustion gas is used for vehicle motor can be significantly
Reduce Vehicular exhaust pollution, such as using natural gas even hydrogen, but in order to improve the single aeration using combustion gas as the vehicle of fuel
Stroke, gas cylinder is provided with vehicle and is used to house combustion gas, in the prior art the internal pressure of hydrogen cylinder up to 35Mpa with
On, the internal pressure of natural gas cylinder is also in more than 20Mpa, and the gaseous-pressure for being finally introducing cylinder is generally several kPas and arrived
Between any several MPas, so, the pressure-reducing valve depressurized to high-pressure gas is particularly important, while in practice,
The stability of decompression valve performance has also intuitively been reacted on the power of vehicle even in traffic safety above.
The device for being used for above combustion gas decompression in the prior art is mostly diaphragm type pneumatic pressure-release valve in higher sensitivity, but by
Big in the both ends pressure difference of pressure-reducing valve, vibrations caused by diaphragm, which will have influence on, in the pressure-reducing valve course of work subsequently uses air pressure in gas system
Stability；Occur a kind of valve type pneumatic pressure-release valve living in the prior art, i.e., on diaphragm set one simultaneously rise transmission and
The bar of guide effect, the amplitude for the limitation diaphragm that the pressure-reducing valve of above structure type can be well, but because bar shakes in limitation
While frictional force caused by its side and valve body compression influence the response speed of bar and the sealing property in bar side face again, it is existing
It is used for the mechanism of decompressor of combustion gas decompression in technology up for further optimization.
The content of the invention
For the pneumatic combustion gas dropping equipment of diaphragm type set forth above existing diaphragm vibrations, sensitivity in use
And the problem of sealing property so that the mechanism of decompressor for combustion gas decompression is up for the purpose that further optimizes in the prior art,
The invention provides a kind of pressure regulation pilot mechanism being used in pneumatic system.
To solve the above problems, will by following technology provided by the present invention for the pressure regulation pilot mechanism in pneumatic system
Put to solve problem：For the pressure regulation pilot mechanism in pneumatic system, including valve body, push rod and the spiral shell being threaded on valve body
Rasp bar, in addition to the diaphragm being fixed on valve body, the valve body and diaphragm surround respiratory cavity, are further opened with valve body and respiratory cavity
The stomata communicated, the end of threaded rod are also fixedly connected with the elastic component in respiratory cavity, position are also fixedly connected with diaphragm
Connecting seat in respiratory cavity, elastic component are fixedly connected with connecting seat, and push rod is fixed on the side that diaphragm deviates from respiratory cavity；
The side of the connecting seat and the sidewall spacers of respiratory cavity coordinate, and sealing ring is additionally provided with the side of connecting seat, institute
State sealing ring and connecting seat and respiratory cavity is divided into epicoele and cavity of resorption, the tie point of threaded rod and elastic component is located at upper intracavitary, gas
Hole position is additionally provided with spiracle in lower intracavitary in the side wall of epicoele.
Specifically, the push rod set is used to act on the valve rod of main valve, with the aperture size of control bound, the stomata of setting
For the control of respiratory cavity internal pressure, using the structure setting being fixed on push rod on diaphragm, it is easy to reach by the deformation of diaphragm
The technique effect of braking mandril motion, i.e. the technical program can realize main valve aperture by diaphragm amplification principle first
Intense adjustment；The threaded rod and elastic component of setting are used to apply compression on diaphragm, and the generation of above compression comes from spiral shell
The rasp bar change of the screw thread position of engagement and elastic deformation of elastic component on valve body, using threaded rod and diaphragm indirect connection
Structure type, it is intended to by elastic component that the elastic deformation on its radial and axial direction occurs is non-homogeneous to buffer diaphragm
Diaphragm caused by deformation and threaded rod are rigidly connected place's local stress, by the deformation in elastic component axially direction, to eliminate
Threaded rod and valve body are rigidly connected the limitation to motion of membrane, buffering diaphragm, and main valve aperture caused by when frequently shaking frequently changes
And caused pressure at expulsion it is unstable the defects of.
Respiratory cavity is divided into the setting of epicoele and cavity of resorption by the sealing ring and connecting seat of setting, it is intended to passes through sealing ring
Cavity of resorption is independent annular seal space, can so avoid compressed gas source from being overflowed by the side wall of threaded rod, not only contribute to economize on gas, together
When the present invention applies to dangerous gas source, above structure also helps the security performance of air supply system.
Further technical scheme is：
Controlled for ease of the internal pressure of lower intracavitary, the stomata includes venthole and air admission hole.
Further to optimize above-mentioned internal pressure control effect so that the main valve that the present invention acts on can timely respond to residing system
Working condition, be additionally provided with magnetic valve on the air admission hole and/or venthole.When applying to automobile-used pressure-reducing valve such as the present invention,
Magnetic valve is respectively provided with air admission hole and venthole, two magnetic valves are connected with the start-up circuit of vehicle, and vehicle so can be achieved and open
The state whether opened with main valve whether is moved to match.
To reduce connecting seat with sealing ring during motion of membrane and the drag size of valve body, beneficial to the sensitivity of the present invention, institute
It is O-ring to state sealing ring, and the quantity at least two of sealing ring.
For ease of simplifying the structure of sealing ring and connecting seat, mitigate the weight of connecting seat, beneficial to the operability of the present invention
And sensitivity, the elastic component is axially axially conllinear compression spring, connecting seat are that bottom is fixed on diaphragm with threaded rod
Barrel-like structure, the free end of compression spring is fixed on connecting seat bucket bottom surface.
To lift the life-span of the anti-corrosion capability of diaphragm, extension diaphragm, in favor of the life-span of the present invention, the material of the diaphragm
For ethylene propylene diene rubber.
The invention has the advantages that：
1st, the present invention is simple in construction, and the push rod of setting is used to act on the valve rod of main valve, with the aperture size of control bound, sets
Stomata be used for respiratory cavity internal pressure control, using the structure setting being fixed on push rod on diaphragm, be easy to the shape by diaphragm
Become the technique effect for reaching braking mandril motion, i.e. the technical program is that can realize main valve by diaphragm amplification principle first
The intense adjustment of aperture；The threaded rod and elastic component of setting are used to on diaphragm apply compression, and the generation of above compression comes
It is indirect with diaphragm using threaded rod from the change of the screw thread position of engagement and the elastic deformation of elastic component on valve body in threaded rod
The structure type of connection, it is intended to which the elastic deformation on its radial and axial direction is occurred to buffer diaphragm by elastic component
Diaphragm caused by heterogeneous deformation and threaded rod are rigidly connected place's local stress, by the deformation in elastic component axially direction,
Come eliminate threaded rod and valve body be rigidly connected the limitation to motion of membrane, buffering diaphragm frequently shake when caused by main valve aperture frequency
It is numerous change and caused pressure at expulsion it is unstable the defects of.I.e. in above structure, pressure control signal is entered by using diaphragm
Row amplification so that the main valve using the present invention has good output pressure Adjustment precision, and the realization of the Adjustment precision can lead to
Cross pneumatic signal and hand-turning threaded rod is realized；In the present invention, the lever movement locus for braking main valve is more steady
It is fixed, beneficial to the stability of main valve performance.
2nd, respiratory cavity is divided into the setting of epicoele and cavity of resorption by the sealing ring and connecting seat set, it is intended to is made by sealing ring
It is independent annular seal space to obtain cavity of resorption, can so avoid compressed gas source from being overflowed by the side wall of threaded rod, not only contribute to economize on gas,
Simultaneously when the present invention applies to dangerous gas source, above structure also helps the security performance of air supply system.I.e. above structure is made
For the pilot mechanism of control bound, safe low-loss operation can be achieved.
Brief description of the drawings
Fig. 1 is the structural representation of pressure regulation pilot mechanism one specific embodiment of the present invention being used in pneumatic system
Figure.
Scheming acceptance of the bid note is respectively：1st, valve body, 11, venthole.12nd, air admission hole, 2, connecting seat, 3, sealing ring, 4, elastic component,
5th, threaded rod, 6, diaphragm, 7, respiratory cavity, 8, push rod, 9, spiracle.
Embodiment
With reference to embodiment, the present invention is described in further detail, but the present invention structure be not limited only to it is following
Embodiment：
Embodiment 1：
As shown in figure 1, for the pressure regulation pilot mechanism in pneumatic system, including valve body 1, push rod 8 and it is threaded on valve body 1
Threaded rod 5, in addition to the diaphragm 6 being fixed on valve body 1, the valve body 1 and diaphragm 6 surround respiratory cavity 7, also opened on valve body 1
Provided with the stomata communicated with respiratory cavity 7, the end of threaded rod 5 is also fixedly connected with the elastic component 4 in respiratory cavity 7, diaphragm 6
On be also fixedly connected with the connecting seat 2 in respiratory cavity 7, elastic component 4 is fixedly connected with connecting seat 2, and push rod 8 is fixed on diaphragm
6 deviate from the side of respiratory cavity 7；
The side of the connecting seat 2 coordinates with the sidewall spacers of respiratory cavity 7, and is additionally provided with sealing ring on the side of connecting seat 2
3, respiratory cavity 7 is divided into epicoele and cavity of resorption by the sealing ring 3 and connecting seat 2, and the tie point of threaded rod 5 and elastic component 4 is located at
Upper intracavitary, stomata is located at lower intracavitary, and spiracle 9 is additionally provided with the side wall of epicoele.
In the present embodiment, the push rod 8 of setting is used to act on the valve rod of main valve, with the aperture size of control bound, sets
Stomata be used for the internal pressure of respiratory cavity 7 control, using the structure setting being fixed on push rod 8 on diaphragm 6, be easy to by diaphragm 6
Deformation reach braking mandril 8 motion technique effect, i.e., the technical program be first can by the amplification principle of diaphragm 6 come reality
The intense adjustment of existing main valve aperture；The threaded rod 5 and elastic component 4 of setting are used to apply compression, above compression on diaphragm 6
Generation come from threaded rod 5 change of the screw thread position of engagement and elastic deformation of elastic component 4 on valve body 1, using threaded rod 5
With the structure type of the indirect connection of diaphragm 6, it is intended to pass through the elasticity occurred on its radial and axial direction of elastic component 4
Deformation is rigidly connected place's local stress come diaphragm 6 caused by buffering the heterogeneous deformation of diaphragm 6 and threaded rod 5, is existed by elastic component 4
The deformation of its axial direction, come eliminate threaded rod 5 and valve body 1 be rigidly connected to diaphragm 6 move limitation, buffering diaphragm 6 it is frequent
Main valve aperture caused by during vibrations frequently change and caused pressure at expulsion it is unstable the defects of.
Respiratory cavity 7 is divided into the setting of epicoele and cavity of resorption by the sealing ring 3 and connecting seat 2 of setting, it is intended to passes through sealing ring 3
So that cavity of resorption is independent annular seal space, it can so avoid compressed gas source from being overflowed by the side wall of threaded rod 5, not only contribute to economize on
Gas, while when the present invention applies to dangerous gas source, above structure also helps the security performance of air supply system.
Embodiment 2：
The present embodiment is further qualified on the basis of embodiment 1, as shown in figure 1, being controlled for ease of the internal pressure of lower intracavitary, institute
Stating stomata includes venthole 11 and air admission hole 12.
Further to optimize above-mentioned internal pressure control effect so that the main valve that the present invention acts on can timely respond to residing system
Working condition, be additionally provided with magnetic valve on the air admission hole 12 and/or venthole 11.As the present invention applies to automobile-used pressure-reducing valve
When, magnetic valve is respectively provided with air admission hole 12 and venthole 11, and two magnetic valves are connected with the start-up circuit of vehicle, so can be achieved
Whether the state whether opened with main valve matches vehicle launch.
To reduce the drag size of sealing ring 3 and valve body 1 when connecting seat 2 moves with diaphragm 6, beneficial to the sensitive of the present invention
Degree, the sealing ring 3 are O-ring, and the quantity at least two of sealing ring 3.
For ease of simplifying the structure of sealing ring 3 and connecting seat 2, mitigate the weight of connecting seat 2, beneficial to the operable of the present invention
Property and sensitivity, the elastic component 4 is axially with the axial conllinear compression spring of threaded rod 5, connecting seat 2 is that bottom is fixed on film
Barrel-like structure on piece 6, the free end of compression spring are fixed on 2 barrels of bottom surfaces of connecting seat.
Embodiment 3：
The present embodiment is further qualified on the basis of above example, as shown in figure 1, for lifted diaphragm 6 anti-corrosion capability,
Extend the life-span of diaphragm 6, in favor of the life-span of the present invention, the material of the diaphragm 6 is ethylene propylene diene rubber.
Above content is to combine the further description that specific preferred embodiment is made to the present invention, it is impossible to assert this
The embodiment of invention is confined to these explanations.For general technical staff of the technical field of the invention,
The other embodiment drawn in the case where not departing from technical scheme, should be included within the scope of the present invention.
Claims (6)
1. for the pressure regulation pilot mechanism in pneumatic system, including valve body（1）, push rod（8）Be threaded in valve body（1）On
Threaded rod（5）, it is characterised in that also include being fixed on valve body（1）On diaphragm（6）, the valve body（1）And diaphragm（6）Surround
Respiratory cavity（7）, valve body（1）On be further opened with and respiratory cavity（7）The stomata communicated, threaded rod（5）End be also fixedly connected with
Positioned at respiratory cavity（7）In elastic component（4）, diaphragm（6）On be also fixedly connected with positioned at respiratory cavity（7）In connecting seat（2）, bullet
Property part（4）With connecting seat（2）It is fixedly connected, push rod（8）It is fixed on diaphragm（6）Away from respiratory cavity（7）Side；
The connecting seat（2）Side and respiratory cavity（7）Sidewall spacers coordinate, and connecting seat（2）Side on be additionally provided with
Sealing ring（3）, the sealing ring（3）And connecting seat（2）By respiratory cavity（7）It is divided into epicoele and cavity of resorption, threaded rod（5）With elasticity
Part（4）Tie point be located at upper intracavitary, stomata is located at lower intracavitary, and spiracle is additionally provided with the side wall of epicoele（9）.
2. the pressure regulation pilot mechanism according to claim 1 being used in pneumatic system, it is characterised in that the stomata bag
Include stomata（11）And air admission hole（12）.
3. the pressure regulation pilot mechanism according to claim 2 being used in pneumatic system, it is characterised in that the air admission hole
（12）And/or venthole（11）On be additionally provided with magnetic valve.
4. the pressure regulation pilot mechanism according to claim 1 being used in pneumatic system, it is characterised in that the sealing ring
（3）For O-ring, and sealing ring（3）Quantity at least two.
5. the pressure regulation pilot mechanism according to claim 1 being used in pneumatic system, it is characterised in that the elastic component
（4）For axial direction and threaded rod（5）Axially conllinear compression spring, connecting seat（2）Diaphragm is fixed on for bottom（6）On tubbiness knot
Structure, the free end of compression spring are fixed on connecting seat（2）On bucket bottom surface.
6. according to the pressure regulation pilot mechanism being used in pneumatic system any one of in claim 1 to 5, its feature exists
In the diaphragm（6）Material be ethylene propylene diene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678927.XA CN107763296A (en) | 2016-08-17 | 2016-08-17 | For the pressure regulation pilot mechanism in pneumatic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610678927.XA CN107763296A (en) | 2016-08-17 | 2016-08-17 | For the pressure regulation pilot mechanism in pneumatic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107763296A true CN107763296A (en) | 2018-03-06 |
Family
ID=61260172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610678927.XA Withdrawn CN107763296A (en) | 2016-08-17 | 2016-08-17 | For the pressure regulation pilot mechanism in pneumatic system |
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| Country | Link |
|---|---|
| CN (1) | CN107763296A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101463A (en) * | 2019-06-18 | 2019-08-09 | 卢乐 | It is a kind of for adsorbing the absorber of tissue |
| CN112555065A (en) * | 2020-12-09 | 2021-03-26 | 河南尚铭网络科技有限公司 | Quantum fuel-saving membrane |
-
2016
- 2016-08-17 CN CN201610678927.XA patent/CN107763296A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110101463A (en) * | 2019-06-18 | 2019-08-09 | 卢乐 | It is a kind of for adsorbing the absorber of tissue |
| CN112555065A (en) * | 2020-12-09 | 2021-03-26 | 河南尚铭网络科技有限公司 | Quantum fuel-saving membrane |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180306 |
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| WW01 | Invention patent application withdrawn after publication |