CN201306492Y - Pneumatic control valve - Google Patents
Pneumatic control valve Download PDFInfo
- Publication number
- CN201306492Y CN201306492Y CNU2008202264339U CN200820226433U CN201306492Y CN 201306492 Y CN201306492 Y CN 201306492Y CN U2008202264339 U CNU2008202264339 U CN U2008202264339U CN 200820226433 U CN200820226433 U CN 200820226433U CN 201306492 Y CN201306492 Y CN 201306492Y
- Authority
- CN
- China
- Prior art keywords
- valve
- control valve
- pneumatic control
- rod
- ring
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims description 20
- 230000037431 insertion Effects 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 20
- 239000000945 filler Substances 0.000 claims description 17
- 210000004907 gland Anatomy 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000246 remedial effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
Abstract
The utility model discloses a pneumatic control valve which comprises a film head, a valve device, a support frame and a connecting block, wherein the film head comprises two film covers, a film sheet, a spring and a push rod; the film covers are in dismountable connection; the film sheet and the spring are arranged in the film covers; the push rod is fixedly connected with the film sheet; the valve device comprises a valve body, a valve rod, a valve cover and a valve rod sealing device; the valve rod is used for controlling the opening and closing of an overflowing passage of the valve body; the valve cover is arranged around the periphery of the valve rod; the valve rod sealing device is arranged in an annular cavity formed by the valve rod and the valve cover; the support frame is arranged between the film head and the valve device; the connecting block is connected between the push rod and the valve rod; the outer peripheral surface of the valve cover is provided with a flange; a stop slot is arranged on the valve body; the flange of the valve cover is arranged in the stop slot of the valve body; and the valve body and the valve cover are connected together by a connecting element connected between the valve body and the support frame. Through the method, the utility model has a compact structure, can reduce the volume of the pneumatic control valve, and can reduce the cost.
Description
Technical field
The utility model relates to a kind of modulating valve, relates in particular to a kind of pneumatic control valve.
Background technique
Modulating valve claims control valve again, it is to use power operation in the process control system, change the device of fluid flow, modulating valve is made up of actuator and valve assembly, wherein, actuator is the thrust part of modulating valve, and it produces corresponding thrust by the size of control signal pressure, promotes the controlling mechanism action.Valve body is the adjusting parts of pneumatic control valve, and it directly contacts with regulating medium, works to regulate flow.Actuator is that the valve of power source is a pneumatic control valve with pressurized air, the service condition of modulating valve is more abominable, be usually used in inflammable and explosive, the easily extremely adjusting of medium such as poison of crystallization, the quality of modulating valve directly influences the quality of system, modulating valve is different from general valve, it is an industrial process measurement and control instrument, so to its complete machine performance, appearance quality has proposed requirements at the higher level, and the actuator on the adjusted valve of present market and the Placement of valve body generally are to utilize flange that valve gap and support are linked together, and this Placement not only volume is big, and intensity is low, and complex structure, not compact, because the quality requirement of valve gap is higher, so relative cost is higher.
In addition, film head in the pneumatic actuator of known a kind of modulating valve can only be fixedlyed connected with support by a connecting end, so modulating valve can only be realized positive interaction and drive, or reaction driven, can't exchange, thereby can not adapt to different occasions, can only change the film head when needed, increase cost like this, can not satisfy the many-sided demand of client.
General filler is in long using process, because friction is bigger, and friction for a long time damages filler easily between the valve rod, and packing seal wearing and tearing back magnitude of recruitment is little, reveal easily, filler makes modulating valve shortening in working life if leakage does not have other remedial measure, can only change valve, increase operating cost.And the coaxality of push rod and valve rod is poor, damages easily, so reduced the working life of modulating valve.
The model utility content
Technical problem to be solved in the utility model provides a kind of pneumatic control valve, its compact structure, and volume is little, can reduce cost.
For solving the problems of the technologies described above, the technical solution of the utility model is: pneumatic control valve, comprise the film head, and described film head comprises two membrane covers that removably connect, and is installed in diaphragm and spring in the described membrane cover, the push rod of fixedlying connected with described diaphragm; Control valve unit, described control valve unit comprises valve body, is used to control the valve rod that the flow channels of described valve body opens and closes, and is surrounded on the valve gap of described valve rod peripheral part, is arranged on the interior valve rod sealing device of toroidal cavity that described valve rod and described valve gap form; Support, described support are installed between film head and the control valve unit; Contiguous block, described contiguous block are connected between push rod and the valve rod; The outer circumferential face of described valve gap is provided with flange, and described valve body is provided with the seam groove, and the flange of valve gap is placed in the seam groove of valve body, and the link that is connected between valve body and the support is fixed together support, valve body and valve gap.
As a kind of improvement, be equipped with a connecting end on described each membrane cover, the identical and coaxial setting of these two connecting end shapes is equipped with the connection set that links together with described support on the connecting end of described membrane cover; On another connecting end of described membrane cover the blocking device that is used to seal described connecting end is installed.
As further improvement, described valve rod sealing device comprises filler, be used for described filler is applied the gland of axial clamping force, described gland and described valve gap are fixed together, described filler comprises insertion ring, the cross section of described insertion ring is a V-arrangement, and described insertion ring comprises internal surface of fitting with valve rod and the outer surface of fitting with valve gap, and the internal surface of described insertion ring and outer surface are respectively conical.
After having adopted technique scheme, the beneficial effect that the utility model is obtained is: by the outer circumferential face with described valve gap flange is set, the seam groove is set on described valve body, flange with valve gap is placed in the seam groove of valve body then, can support, valve body and valve gap be fixed together by the link that is connected between valve body and the support like this.Can make valve gap be surrounded on described valve rod peripheral part in this way and be positioned at valve body and the inside of support skeleton, reduce the volume of pneumatic control valve, made simple in structurely, compact like this, and not only save component such as flange, the corresponding volume that also can reduce valve gap has reduced cost.
By on each membrane cover, being equipped with a connecting end, and the identical and coaxial setting of these two connecting end shapes, can fixedly connected with two connecting ends respectively by connection set, realize the just counteractive exchange of valve, can satisfy the different demand of client like this, be applicable to different occasions, and easy to use, the installation and maintenance of this Placement.
Be designed to taper shape by internal surface and outer surface, can reduce the inner and outer surface of insertion ring and the surface of contact between valve rod and the valve gap, thereby reduce surface friction drag, make insertion ring not fragile, thereby prolong the working life of filler insertion ring.
Description of drawings
Accompanying drawing is the utility model embodiment's a structural representation.
Embodiment
As shown in drawings, pneumatic control valve comprises two membrane covers that removably connect 1, is installed in diaphragm 2 and spring 3 in the described membrane cover 1, is fixedly connected with push rod 4 on the described diaphragm 2; Be fixedly connected with contiguous block 9 in the end of push rod 4, the other end of contiguous block 9 is equipped with valve rod 6, can control the switching of the flow channels of described valve body 5 by valve rod 6.
On each membrane cover 1, be equipped with a connecting end, identical and the coaxial setting of these two connecting end shapes, the connecting end of a membrane cover 1 and described support 8 are fixed together by connection set, described connection set is a flanged flange link 18, and the connecting end of described flange link 18 and membrane cover 1 is by being threaded togather; The blocking device of sealing is installed on the connecting end of another membrane cover 1, described blocking device is suspension ring 11, suspension ring 11 not only can play the closing membrane head, form the effect of sealed air chamber, and can make things convenient for on-the-spot the installation, all film head and support 8 can be linked together by two identical connecting ends of shape, the anti-turnback of film head can be realized the just counteractive exchange of pneumatic control valve valve, can adapt to different work requirements.
Valve rod sealing device is arranged in the toroidal cavity of described valve rod 6 and 7 formation of described valve gap, described valve rod sealing device comprises filler and is used for described filler is applied first gland 12 and second gland of axial clamping force, second gland is a valve gap 7, described first gland 12 is threaded togather with described valve gap 7, and described filler is placed in the described toroidal cavity.Wherein, filler comprises insertion ring 13, and the upper and lower of insertion ring 13 is separately installed with trim ring and lower clamping ring.Described insertion ring 13 comprises that cross section is that last faying surface, the cross section of V-arrangement is the following faying surface of V-arrangement, the internal surface of fitting with valve rod 6 and the outer surface of fitting with valve gap; It is the faying surface of V-arrangement that described upward trim ring and lower clamping ring have the cross section of fitting with described insertion ring respectively; Fit by the last faying surface that will go up trim ring and insertion ring 13, with the following faying surface applying of lower clamping ring and insertion ring 13, with they composition fillers that presses together; The internal surface of described insertion ring 13 and outer surface are respectively conical, can reduce the inner and outer surface of insertion ring 13 and the surface of contact between valve rod 6 and the valve gap 7 like this, thereby reduce surface friction drag, make insertion ring 13 not fragile, thereby prolong the working life of filler.
Described valve rod sealing device also comprises and is used for first seal ring 16 that the radial clearance between first gland 12 and the valve rod 6 is sealed, described first seal ring 16 is installed in the groove of inner surface of described first gland 12, can play the effect of sealing once more by first seal ring 16, improve valve rod 6 sealing effects.
Described valve rod sealing device also comprises and is used for second seal ring 17 that the radial clearance between first gland 12 and the valve gap 7 is sealed, described second seal ring 17 is installed in the groove of outer surface of described first gland 12, can seal once more valve rod 6 by second seal ring 17, improve sealing effect.
Be provided with inflow port 14 and go out head piece 15 on described valve body, described inflow port 14 is identical with the described cross section that goes out head piece 15, and channels designs such as employings can make the flow resistance of modulating valve reduce, thereby reduce friction, raising adjusting sensitivity.
Described contiguous block 9 is an integral structure, and the contiguous block 9 by one can improve the coaxality of valve rod 6 and push rod 4, makes valve rod 6 not fragile, thereby has prolonged the working life of pneumatic control valve.
The utility model is not limited to above-mentioned embodiment, and those of ordinary skill in the art is from above-mentioned enlightenment, expect other the replacement structure all within protection domain of the present utility model.
Claims (8)
1. pneumatic control valve comprises
The film head, described film head comprises two membrane covers that removably connect, and is installed in diaphragm and spring in the described membrane cover, the push rod of fixedlying connected with described diaphragm;
Control valve unit, described control valve unit comprises valve body, is used to control the valve rod that the flow channels of described valve body opens and closes, and is surrounded on the valve gap of described valve rod peripheral part, is arranged on the interior valve rod sealing device of toroidal cavity that described valve rod and described valve gap form;
Support, described support are installed between film head and the control valve unit;
Contiguous block, described contiguous block are connected between push rod and the valve rod; It is characterized in that:
The outer circumferential face of described valve gap is provided with flange, and described valve body is provided with the seam groove, and the flange of valve gap is placed in the seam groove of valve body, and the link that is connected between valve body and the support is fixed together support, valve body and valve gap.
2. pneumatic control valve as claimed in claim 1, it is characterized in that: be equipped with a connecting end on described each membrane cover, identical and the coaxial setting of these two connecting end shapes is equipped with on the connecting end of described membrane cover and is used for the connection set that links together with described support; On another connecting end of described membrane cover the blocking device that is used to seal described connecting end is installed.
3. pneumatic control valve as claimed in claim 2 is characterized in that: described connection set is a flanged link, and described link is threaded with the connecting end of membrane cover, and described blocking device is suspension ring.
4. pneumatic control valve as claimed in claim 3, it is characterized in that: described valve rod sealing device comprises filler, described filler is placed in the described toroidal cavity, described filler comprises trim ring, insertion ring and lower clamping ring, described insertion ring comprises that cross section is that last faying surface, the cross section of V-arrangement is the following faying surface of V-arrangement, the internal surface of fitting with valve rod and the outer surface of fitting with valve gap, describedly goes up trim ring and lower clamping ring to have the cross section of fitting with described insertion ring respectively be the faying surface of V-arrangement; Be used for described filler is applied first gland and second gland of axial clamping force; The internal surface of described insertion ring and outer surface are respectively conical.
5. pneumatic control valve as claimed in claim 4, it is characterized in that: described valve rod sealing device also comprises and is used for first seal ring that the radial clearance between first gland and the valve rod is sealed, and described first seal ring is installed in the groove of inner surface of described first gland.
6. pneumatic control valve as claimed in claim 5, it is characterized in that: described valve rod sealing device also comprises and is used for second seal ring that the radial clearance between first gland and the valve gap is sealed, and described second seal ring is installed in the groove of outer surface of described first gland.
7. as the described pneumatic control valve of the arbitrary claim of claim 1 to 6, it is characterized in that: described valve body is provided with the influent stream passage and goes out circulation road, and described influent stream passage is identical with the described cross-section area that goes out circulation road.
8. pneumatic control valve as claimed in claim 7 is characterized in that: described contiguous block is an integral structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202264339U CN201306492Y (en) | 2008-12-09 | 2008-12-09 | Pneumatic control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202264339U CN201306492Y (en) | 2008-12-09 | 2008-12-09 | Pneumatic control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201306492Y true CN201306492Y (en) | 2009-09-09 |
Family
ID=41098957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202264339U Expired - Fee Related CN201306492Y (en) | 2008-12-09 | 2008-12-09 | Pneumatic control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201306492Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135203A (en) * | 2011-01-17 | 2011-07-27 | 卓旦春 | Connecting device for executer and valve |
| CN102494176A (en) * | 2011-12-12 | 2012-06-13 | 浙江中控流体技术有限公司 | Pneumatic film actuating mechanism |
| CN102606748A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class II film pneumatic bellows stop valve |
| CN102767641A (en) * | 2012-07-02 | 2012-11-07 | 上海高特环保技术工程有限公司 | Heating furnace burner valve actuator |
| CN105333159A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Double-valve-element pneumatic control valve |
-
2008
- 2008-12-09 CN CNU2008202264339U patent/CN201306492Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102606748A (en) * | 2010-12-29 | 2012-07-25 | 大连大高阀门有限公司 | Nuclear class II film pneumatic bellows stop valve |
| CN102135203A (en) * | 2011-01-17 | 2011-07-27 | 卓旦春 | Connecting device for executer and valve |
| CN102135203B (en) * | 2011-01-17 | 2012-12-12 | 卓旦春 | Connecting device for executer and valve |
| CN102494176A (en) * | 2011-12-12 | 2012-06-13 | 浙江中控流体技术有限公司 | Pneumatic film actuating mechanism |
| CN102767641A (en) * | 2012-07-02 | 2012-11-07 | 上海高特环保技术工程有限公司 | Heating furnace burner valve actuator |
| CN105333159A (en) * | 2015-10-26 | 2016-02-17 | 无锡市圣科不锈钢气动自控阀门厂 | Double-valve-element pneumatic control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201306492Y (en) | Pneumatic control valve | |
| CN201568497U (en) | Double-acting brake wheel cylinder assembly | |
| CN212480223U (en) | Pneumatic three-way regulating valve | |
| CN118564681A (en) | Full-diameter bidirectional sealing C-shaped ball valve | |
| CN201661692U (en) | Adjustable and interchangeable two-way three-eccentric hard-sealing butterfly valve | |
| CN208311514U (en) | Intelligent bracing type parallel double-flashboard alloy seal magnetic force gate valve | |
| CN219588170U (en) | Double row pilot safety valve | |
| CN218598823U (en) | Root valve of liquid oxygen storage tank | |
| CN217422222U (en) | Butterfly valve for harsh working conditions | |
| CN206299798U (en) | Floated control valve | |
| CN214534582U (en) | High-temperature high-pressure sleeve type self-sealing structure regulating valve | |
| CN213900015U (en) | Dynamic balance valve and dynamic balance valve core | |
| CN2921497Y (en) | Micro-block flow-limiting non-return valve | |
| CN206257324U (en) | A kind of valve for pressure difference | |
| CN202691131U (en) | Pneumatic straight-through type diaphragm valve | |
| CN219102063U (en) | Leak-proof pneumatic film regulating valve | |
| CN213451812U (en) | Linear regulating valve | |
| CN220060757U (en) | Self-operated regulating valve | |
| CN222798227U (en) | A pneumatically controlled one-way valve | |
| CN217583334U (en) | Electromagnetic valve body | |
| CN2876478Y (en) | Automatic safety valve for fuel gas leakage | |
| CN216279613U (en) | Pressure reducing valve capable of preventing leakage at adjusting bolt | |
| CN215059493U (en) | Valve clack adjustable pressure reducing valve | |
| CN218625438U (en) | Solenoid valve and solenoid valve subassembly | |
| CN113324079A (en) | Low-power consumption regulating valve with cut-off function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090909 Termination date: 20121209 |