CN201090749Y - Cylinder type straight travel range control valve - Google Patents
Cylinder type straight travel range control valve Download PDFInfo
- Publication number
- CN201090749Y CN201090749Y CNU200720080905XU CN200720080905U CN201090749Y CN 201090749 Y CN201090749 Y CN 201090749Y CN U200720080905X U CNU200720080905X U CN U200720080905XU CN 200720080905 U CN200720080905 U CN 200720080905U CN 201090749 Y CN201090749 Y CN 201090749Y
- Authority
- CN
- China
- Prior art keywords
- valve
- base
- rod
- push rod
- valve body
- 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
- 210000004907 gland Anatomy 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 9
- 239000004033 plastic Substances 0.000 abstract description 5
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 description 7
- 238000007789 sealing Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Landscapes
- Lift Valve (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a cylinder linear motion control valve which comprises a valve body, a valve rod threaded into the valve body and a valve base arranged in the valve body corresponding to the valve core of the valve rod; the valve rod and the valve core are integrated to a whole; a valve base installation groove is arranged in the valve body; the valve base is movably arranged in the valve base installation groove; the valve base comprises a base which is in hard seal fit with the valve core, a pressure cover arranged on the base, and a soft valve base ring which is in soft seal fit with the valve core and is arranged between the base and the pressure cover. The utility model solves the problem of easy detachment of the valve core and the valve rod, so that the valve rod can not be bent or broken off; because the valve base is not in threaded connection with the valve body, the valve body can not be discarded due to thread erosion; a combination structure is adopted to combine the soft seal with the hard seal, so that the valve base is ensured to bear larger loading force and can be used under high temperature and high pressure with long service life; when the soft seal part of the valve base has plastic deformation or abrasion, only the soft seal part needs to be replaced for maintenance.
Description
Technical field
The utility model relates to a kind of control valve, relates in particular to a kind of cylinder type straight journey control valve.
Background technique
Control valve is a very important final element in the automatic control system, is used for the regulated fluid flow, overcomes interference, guarantees that controlled variable reaches given craft index.Control valve is accurately normally worked normal operation and the safety in production that guarantees tooling is had great significance.The valve portion of traditional diaphragm type straight journey control valve is made up of trim and valve body, and trim comprises spool valve rod, valve seat, stuffing box and valve gap etc.The spool valve rod of tradition control valve adopts split-type structural, and the spool valve rod is to be threaded by taper pin to form.Adopt the spool valve rod of split-type structural mainly to have following problem: form because the spool valve rod adopts taper pin to be threaded, in use, the taper pin easy-rupturing causes spool and valve rod to break away from, and makes troubles to production, and has potential safety hazard; Existing valve rod is thinner, rigidity is in use relatively poor, easy deformation, it is close that control valve is not closed completely, and causes that control valve leaks, and it is crooked or fracture valve rod often to occur, control accuracy and reliability are low, and working life is short, and production can not normally be carried out, improve production and maintenance cost, reduced manufacturing efficiency.
The leakage of control valve mainly is the sealing decision of spool and valve seat in addition, and valve base sealing is divided into two kinds of hard sealing and soft seals according to medium and temperature different.The soft seal valve seat construction of traditional single seat, two-seater control valve all adopts the direct machine shaping of polytetrafluoroethylene (PTFE) material to cooperate with the spool of metal to reach sealing.This threaded valve seat of directly being processed by the polytetrafluoroethylene (PTFE) material can only bear limited load power, promptly be no more than the power that makes the elastic properties of materials distortion, load one height will make the valve seat distortion, causes leakage, thereby can not use under the working condition of High Pressure Difference and high temperature.And the threaded valve seat inconvenient maintenance of this polytetrafluoroethylene (PTFE) integrated type if during normal use need repairing, can cause the destruction to the valve seat screw thread when taking off, thereby recycling rate of waterused is low, and working life is short; In addition, all must integral replacing when this all-in-one-piece soft seal valve seat generation plastic deformation or wearing and tearing, improved maintenance cost.The valve seat of tradition control valve is to link to each other with valve body by screw thread, after the screw thread of valve seat and valve body joint is corroded, can cause valve body to be scrapped, and has improved manufacture cost.Because valve seat is fixed on the valve body, when processing, assembling, be difficult to reach and make valve seat and spool concentric, the processing and assembling difficulty strengthens, and can not guarantee higher leakage class.
In addition, the diaphragm actuator of traditional diaphragm type straight journey control valve is designed to two kinds of positive interactions and reverse actuator to the abort situation open and close, therefore at the scene if fail close, in the time will converting fault to and open, just must purchase the control valve of a positive interaction diaphragm actuator in addition.And the control valve of positive interaction diaphragm actuator will be ressembled, and must the control valve on the pipeline be taken off, yet because a lot of control valve can not take off, has brought difficulty therefore for on-the-spot the replacing.
Summary of the invention
The purpose of this utility model is to overcome the problems referred to above that existing control valve exists, and a kind of cylinder type straight journey control valve is provided.The utility model has solved the problem that spool and valve rod easily break away from, and valve rod can be not crooked or fractures, and the reliability height is safe in utilization; Spool and valve seat can be adjusted into one heart automatically, processing and assembling is simple, and nothing is threaded between valve seat and valve body, can not occur during use because screw thread is corroded and causes valve body to be scrapped; Adopt fabricated structure, soft seal and hard sealing are combined, make valve seat can bear bigger load power, can not only under High Temperature High Pressure, use, and long service life; When plastic deformation or wearing and tearing take place in soft seal place of valve seat, only need to change the soft seal parts, shortened engineering time, reduced maintenance cost.
For achieving the above object, the technical solution adopted in the utility model is as follows:
A kind of cylinder type straight journey control valve, comprise valve body, stretch into the valve rod in the valve body and be equipped with valve seat in valve body with the spool of valve rod, it is characterized in that: described valve rod and spool are an integral body, have the valve seat mounting groove in the valve body, and valve seat is movably arranged in the valve seat mounting groove; Described valve seat comprises the gland that is provided with on the base that is sealed and matched firmly with spool and the base, is provided with the soft seat ring that cooperates with the spool soft seal between base and the gland.
Described valve body is connected with support through valve gap, and support is provided with cylinder actuator, and cylinder actuator is connected with push rod, and valve rod is connected with push rod in valve gap stretches into support.
Described cylinder actuator comprises the cylinder that is fixed on the bracket, the piston that cooperates with cylinder inner wall, described piston is connected with cylinder head elasticity, be fixedly connected with the push rod separation sleeve on the piston, push rod passes bracket and piston stretches in the push rod separation sleeve, bracket is provided with the pushrod bushing that cooperates with push rod, is provided with seal ring between pushrod bushing and push rod.
Described valve body is provided with the fixing cage of valve seat that is used to limit the fixed valve base position.
Be provided with the filler disrance sleeve between described valve gap and valve rod, the filler disrance sleeve is provided with two packing grooves.
Also be provided with upper end guide pipe and lower end guide pipe between described valve gap and valve rod.
Also be provided with the measuring appliance that is used to measure push rod displacement distance on the described support.
The diameter of described valve rod is the 12-21 millimeter.
Adopt advantage of the present utility model to be:
One, the utility model is by valve body and the design of valve seat clearance type, and promptly valve seat can move in mounting groove, has realized the self-alignment center of spool and valve seat, does not need manual control.
Two, spool and valve seat self-alignment center do not need to grind, and it is tighter that control valve is closed, and improved the control valve leakage class.
Three, because spool and valve seat do not have threaded connection relation, the situation that the screw thread corrosion causes valve body to be scrapped can not take place.
Four, loading and unloading are easy, and maintenance is repaired simple, save cost, and eliminated the hidden danger of accident, guaranteed to produce normal operation and safety in production.
Five, valve rod and spool are monolithic construction, can bear High Pressure Difference, have solved the problem that traditional spool and valve rod come off, and valve rod can be not crooked and fractures, and has improved the reliability that control valve uses; The diameter of valve rod is 2-3 a times of traditional valve rod, can accept the thrust bigger than traditional control valve, and it is tighter that control valve is closed, and improved the control valve leakage class; Adopt monolithic construction to improve control accuracy, prolonged control valve working life, saved cost, improved manufacturing efficiency, and eliminated potential safety hazard, safe in utilization.
Six, spool contacts with soft seat ring is soft, contact firmly with base, realize soft seal and hard sealing, when in the regime of elastic deformation of load power at soft seat ring, spool fully contacts tight shutoff with soft seat ring and reaches zero leakage, soft seat ring plastic deformation or destroyed back valve core just form hard the contact with the stainless steel base and realize double seal after load power increases, and can not only use under High Temperature High Pressure, and increase working life.
Seven, do not have between valve seat and valve body and directly be connected, easy removal, when soft seat ring plastic deformation or destroyed, only need pull down gland, after bad soft seat ring dismounting, just can reuse after embedding new soft seat ring, do not need to change whole valve seat, the recycling rate of waterused height has shortened maintenance time, and reduced maintenance cost, saved user cost.
Eight, the utility model adopts the control valve of cylinder actuator structure, and making abort situation open and close can exchange at the scene, has improved the recycling rate of waterused of actuator, has reduced maintenance cost.
Nine, the utility model adopts the control valve of cylinder actuator structure, and bleed pressure is big, thereby thrust is big; Can be by means of the Shuttoff Valve of making a concerted effort of acting force of the spring, cylinder thrust and fluid self pressure, turn-off performance is more reliable.
But ten, the fixing cage direct fluid of valve seat, buffer fluid pressure, the destruction that the protection valve body is not subjected to fluid erosion, flash distillation and cavitation has been reduced noise simultaneously, has improved working life.
11, be provided with upper end guide pipe and lower end guide pipe between valve gap and valve rod, solved between valve gap and the valve rod friction and problem such as stuck, reliable and stable.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the utility model valve seat construction schematic representation
Be labeled as among the figure: 1, valve body, 2, valve rod, 3, spool, 4, valve seat, 5, base, 6, gland, 7, soft seat ring, 8, support, 9, bracket, 10, push rod, 11, valve gap, 12, cylinder, 13, spring, 14, piston, 15, the push rod separation sleeve, 16, the lower end guide pipe, 17, measuring appliance.
Embodiment
A kind of cylinder type straight journey control valve, comprise valve body 1, stretch into the valve rod 2 in the valve body 1 and be equipped with valve seat 4 in valve body with the spool 3 of valve rod 2, described valve rod 2 and spool 3 are an integral body, have the valve seat mounting groove in the valve body 1, valve seat 4 is movably arranged in the valve seat mounting groove, and valve seat 4 is provided with seal washer with valve body 1 cooperation place; Described valve seat 4 comprises the gland 6 that is provided with on the base 5 that is sealed and matched firmly with spool 3 and the base 5, is provided with the soft seat ring 7 that cooperates with spool 3 soft seals between base 5 and the gland 6.
Described valve body 1 is connected with support 8 by connecting folder through valve gap 11, be provided with seal ring with support 8 all-in-one-piece brackets 9, be connected with the cylinder actuator that is located at the top by snap ring, cylinder actuator is connected with push rod 10, and valve rod 2 is connected with push rod 10 in valve gap 11 stretches into support 8.Described cylinder actuator comprises cylinder 12, spring 13, the piston 14 that cooperates with cylinder 12 inwalls, be fixedly connected with push rod separation sleeve 15 on the piston 14, push rod 10 passes bracket 9 and piston 14 stretches in the push rod separation sleeve 15, bracket 9 is provided with the pushrod bushing that cooperates with push rod 10, is provided with seal ring between pushrod bushing and push rod.
In addition, valve body 1 is provided with the fixing cage of valve seat that is used to limit valve seat 4 positions; Be provided with the filler disrance sleeve between valve gap 11 and valve rod, the filler disrance sleeve is provided with two packing grooves, and valve gap 11 and 2 of valve rods also are provided with upper end guide pipe and lower end guide pipe 16.In support 8, also be provided with the measuring appliance 17 that is used to measure push rod 10 displacement distances.The diameter of the utility model valve rod 2 is the 12-21 millimeter, and base 5 and gland 6 are stainless steel base and gland, and soft seat ring is the soft PTFE seat ring.
Working principle of the present utility model is: after cylinder was carried out machine acknowledge(ment) signal source of the gas, cylinder produced thrust, and piston is moved up or down, pressure spring, drive push rod, valve rod, spool move up or down, and spool leaves or close valve seat, thereby opens or closes valve.Keep one regularly when signal pressure, valve just maintains on certain aperture.
Claims (8)
1. cylinder type straight journey control valve, comprise valve body (1), stretch into the valve rod (2) in the valve body (1) and be equipped with valve seat (4) in valve body (1) with the spool (3) of valve rod (2), it is characterized in that: described valve rod (2) and spool (3) are an integral body, valve body has the valve seat mounting groove in (1), and valve seat (4) is movably arranged in the valve seat mounting groove; Base (5) that described valve seat (4) comprises and spool (3) is sealed and matched firmly and base (5) are gone up the gland (6) that is provided with, and are provided with the soft seat ring (7) that cooperates with spool (3) soft seal between base (5) and the gland (6).
2. cylinder type straight journey control valve according to claim 1, it is characterized in that: described valve body (1) is connected with support (8) through valve gap (11), support (8) is provided with cylinder actuator, cylinder actuator is connected with push rod (10), and valve rod (2) is connected with push rod (10) in valve gap (11) stretches into support (8).
3. cylinder type straight journey control valve according to claim 2, it is characterized in that: described cylinder actuator comprises the cylinder (12) that is fixed on the bracket (9), the piston (14) that cooperates with cylinder (12) inwall, described piston (14) is connected with cylinder (12) top elasticity, be fixedly connected with push rod separation sleeve (15) on the piston (14), push rod (10) passes bracket (9) and piston (14) stretches in the push rod separation sleeve (15), bracket (9) is provided with the pushrod bushing that cooperates with push rod (10), is provided with seal ring between pushrod bushing and push rod.
4. according to claim 1,2 or 3 described cylinder type straight journey control valves, it is characterized in that: described valve body (1) is provided with the fixing cage of valve seat that is used to limit valve seat (4) position.
5. according to claim 2 or 3 described cylinder type straight journey control valves, it is characterized in that: be provided with the filler disrance sleeve between described valve gap (11) and valve rod (2), the filler disrance sleeve is provided with two packing grooves.
6. cylinder type straight journey control valve according to claim 5 is characterized in that: also be provided with upper end guide pipe and lower end guide pipe (16) between described valve gap (11) and valve rod (2).
7. according to claim 2,3 or 6 described cylinder type straight journey control valves, it is characterized in that: also be provided with the measuring appliance that is used to measure push rod (10) displacement distance on the described support (8) and measure 17 devices.
8. according to claim 1,2,3 or 6 described cylinder type straight journey control valves, it is characterized in that: the diameter of described valve rod (2) is the 12-21 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720080905XU CN201090749Y (en) | 2007-08-31 | 2007-08-31 | Cylinder type straight travel range control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720080905XU CN201090749Y (en) | 2007-08-31 | 2007-08-31 | Cylinder type straight travel range control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201090749Y true CN201090749Y (en) | 2008-07-23 |
Family
ID=39862509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720080905XU Expired - Fee Related CN201090749Y (en) | 2007-08-31 | 2007-08-31 | Cylinder type straight travel range control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201090749Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806775A (en) * | 2015-03-12 | 2015-07-29 | 杭州艾诺流体控制仪表有限公司 | Hard sealing control valve |
| CN105240546A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | Pneumatic straight-stroke single-base control valve |
-
2007
- 2007-08-31 CN CNU200720080905XU patent/CN201090749Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806775A (en) * | 2015-03-12 | 2015-07-29 | 杭州艾诺流体控制仪表有限公司 | Hard sealing control valve |
| CN104806775B (en) * | 2015-03-12 | 2017-05-24 | 杭州艾诺流体控制仪表有限公司 | hard sealing control valve |
| CN105240546A (en) * | 2015-10-12 | 2016-01-13 | 罗普阀业（宜兴）有限公司 | Pneumatic straight-stroke single-base control valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201502724U (en) | Pneumatic adjusting valve | |
| CN201090749Y (en) | Cylinder type straight travel range control valve | |
| CN203453518U (en) | Plug valve | |
| CN104482253A (en) | Combined valve | |
| CN101982680B (en) | Stop valve | |
| CN111810664B (en) | Vacuum die-casting stop valve of hydraulic pump | |
| CN210372110U (en) | Eccentric half ball valve | |
| CN201133479Y (en) | Quick repairing type double seal stop valve | |
| CN103603964A (en) | Online-maintainable butt-welding high-temperature high-pressure rapid cut-off steam ball valve | |
| CN203384402U (en) | Ultra-high-temperature hard seal ball valve | |
| CN2416290Y (en) | Cone seal stop valve for liquid caustic soda | |
| CN201909048U (en) | Globe valve | |
| CN210344511U (en) | Double-bellows valve rod sealing structure | |
| CN219866286U (en) | Stop valve | |
| CN211145368U (en) | Multiple corrugated pipe stop valve | |
| CN202371181U (en) | Critical process valve for power station | |
| CN109084078B (en) | Y-shaped stop valve | |
| CN218152405U (en) | Flange type double eccentric soft sealing butterfly valve | |
| CN216407773U (en) | Sealing device of regulating valve | |
| CN211624231U (en) | Porous flash evaporation control valve | |
| CN218377732U (en) | High-performance butterfly valve for high-humidity environment | |
| CN202733049U (en) | Improved three-way stop valve | |
| CN220523319U (en) | Bypass cut-off valve | |
| CN219673404U (en) | Nuclear-grade pneumatic stop check valve | |
| CN218971837U (en) | Bellows seal regulating valve with anti-rotation function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHI HONGLIANG Free format text: FORMER OWNER: CHENGDU ATEMI CONTROL VALVE INSTRUMENT CO., LTD. Effective date: 20080808 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080808 Address after: 4, unit 13, 66, Guanghua village street, 5, Qingyang District, Sichuan, Chengdu, China: 610072 Patentee after: Shi Hongliang Address before: A325, 4 innovation center, West Central Road, hi tech West District, Sichuan, Chengdu 611731, China Patentee before: Chengdu Atemi Control Valve Instrument Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20140831 |
|
| EXPY | Termination of patent right or utility model |