CN107606225A - Tire formula compensation sealing structure on valve - Google Patents
Tire formula compensation sealing structure on valve Download PDFInfo
- Publication number
- CN107606225A CN107606225A CN201711039008.9A CN201711039008A CN107606225A CN 107606225 A CN107606225 A CN 107606225A CN 201711039008 A CN201711039008 A CN 201711039008A CN 107606225 A CN107606225 A CN 107606225A
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- China
- Prior art keywords
- seal
- sealing
- valve
- connecting portion
- mounting groove
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- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 117
- 239000007937 lozenge Substances 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 6
- 230000008859 change Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 8
- 238000007664 blowing Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The present invention relates to a kind of tire formula sealing structure on valve, including seal, seal includes connecting portion, sealing, and connecting portion and sealing are structure as a whole, and the profile of connecting portion is identical with the shape of the seal mounting groove on valve seal seat；The interior of the connecting portion is provided with hollow type pressure containment chamber；Wedge-shaped pretension face is provided with the outside of connecting portion and sealing；The lower surface of sealing is provided with sealing surface；Connecting portion is provided with the supercharging compensation passage connected with pressure containment chamber, and the supercharging connected with supercharging compensation passage is provided with the outside of connecting portion and compensates mouth.The present invention is ingenious in design, change the conventional thought of valve sealing structure, it is off the beaten track, it is the innovation of gate valve Seal Design, achieves unexpected good result, being compared with traditional sealing structure has certain compensating action, after sealing wears, reparation sealing effectiveness can be carried out by ftercompction, product structure of the present invention is relatively easy, processing and maintenance are easy, therefore cost is low；And easy to use, good sealing effect.
Description
Technical field
The invention belongs to valve seal technical field, more particularly to a kind of tire formula sealing structure on valve.
Background technology
It is well known that valve is the control unit in fluid delivery system, have cut-off, regulation, water conservancy diversion, prevent countercurrently,
The functions such as voltage stabilizing, shunting or overflow pressure relief.It is product indispensable and irreplaceable in current industrial production.Giving over long distances
Generally it is both provided with being in the valve of normally open in drainage pipeline, oil or natural-gas transfer pipeline together at interval of certain distance
Door.Its effect is：Just in case just the valve at this segment pipe both ends is closed when being leaked in certain segment pipe, you can to leak
It is repaired or replaced.Though gate valve or stop valve sealing property are good, keying speed is relatively slow, when emergency occurs not
It can close rapidly；Plug valve or ball valve keying speed are fast, but pressure-resistant relatively poor with sealing, typically also seldom in these occasions
Using；Butterfly valve is very fast with opening speed due to closing, sealing property, so this occasion typically all uses butterfly valve.But
If traditional butterfly valve is entrained with silt particle or debris in fluid when closed, will there are gap, sealing between valve core plate and valve seat
It will can be affected.The major function of butterfly valve is the break-make of control pipeline, and the requirement for butterfly valve is, when opening in pipeline
Medium is smooth by reaching reliable sealing, function-stable during, closure, stands adverse circumstances i.e. high temperature, bonding, corrosion and punching
Brush, possesses the performance of the sealed reliable such as anti-corrosion, wear-resisting, high temperature resistant.
In butterfly valve, closed butterfly valve it is with high content of technology, require strict, widely used.Traditional sealed butterfly valve is valve rod
Valve plate rotation is driven, implements pipeline closed by relative interference fit between sealing pair.When final position is arrived in closing, need to be driven
Device is given the great torque of valve rod and could completed, and its staring torque is typically 8-10 times of ventilation butterfly valve.Because hard sealing is
It is very stiff and demanding between metal and metal, completed in rotation closely sealed, technological requirement is high, and manufacture difficulty is big, it is difficult to produce high-quality
Measure the excellent product of A, B level.The current commonly upper metal sealing of valve element, and rubber seal is installed on valve body, sealed butterfly valve exists
During opening and closing, because manifold pressure is high, seal pressure is big, and unlatching moment is also relatively large, and this power friction is not
But difficulty is brought to manufacture, sealing Accessory injury is also quite serious, not only needs often maintenance and changes, has been greatly reduced sealing
The service life of butterfly valve, and an insoluble major issue for sealed butterfly valve at present.
A kind of heavy caliber gas-flow closure butterfly valve (Application No. 201410472313.7) disclosed in prior art, due to using
Elastic gas-flow closure cushion rubber well, plays main seal using gas-flow closure cushion rubber, preferably solves this problem.But pass through
User is used, and its structure is remained in certain defect, and complicated first, such as " body top is provided with inflation inlet, and bottom is provided with cup-shaped
Valve pin, the inflation inlet side side are provided with gas tube, and described gas tube one end connects with inflation inlet, and the other end enters with valve outside of foot
Stomata is connected with the inlet channel of valve rod lower end, and gas check valve is provided among gas tube ".Obvious this structure is due to valve body tyre
There are gas tube and charge valve, not only manufacturing cost is big, and easily breaks gas tube and charge valve in carrying or installation；Again
It is that gas tube and charge valve tie point are more, the hidden danger that easy gas leakage effect air-tightness be present.The gas-flow closure glue of the present invention in addition
For circle after abrasion, its wall thickness is thinning, and the place explosion in weakness is easy to after pressurization, and then loses the effect of sealing, and one
Explosion or sealing leak, sealing ring, which occur, for denier will lose sealing effectiveness, basically can not repair, cause the waste of resource, tie up
Accomplish this increase；U-shaped O-ring seal is to be pressed by trim ring from lateral surface in the prior art, without any constraint, works as increase
During the internal pressure of O-ring seal, sealing ring has the trend slided in groove sealing ring tankage；Once sealing ring slides, sealing ring is caused
Discontinuity, and then accelerate the abrasion of sealing ring.
The content of the invention
The present invention for solve technical problem present in known technology provide a kind of simple in construction, service life into, tie up
Shield cost is cheap, the good sealing effect tire formula sealing structure on valve.
The present invention is adopted the technical scheme that to solve technical problem present in known technology：
A kind of tire formula sealing structure on valve, including seal, it is characterised in that：The seal includes connection
Portion, sealing, the connecting portion and sealing are structure as a whole, profile and the seal on valve seal seat of the connecting portion
The shape of mounting groove is identical；The interior of the connecting portion is provided with hollow type pressure containment chamber, and the pressure containment chamber is centrally located at
1/4 to 1/2 place of seal whole height, and close to connecting portion side；Wedge-shaped pretension is provided with the outside of connecting portion and sealing
Face；The lower surface of the sealing is provided with sealing surface；It is logical that the connecting portion is provided with the supercharging compensation connected with pressure containment chamber
Road, the supercharging connected with supercharging compensation passage is provided with the outside of connecting portion and compensates mouth.
The present invention can also use following technical measures：
The outside of the connecting portion, which is provided with wedge-shaped pretension face, is additionally provided with only lock station or only lock tooth.
The section of the connecting portion is circular configuration.
The section of the connecting portion is triangular structure.
The seal mounting groove that the valve seal seat is provided with is annular through groove, and the connecting portion of the seal is inlaid in
In annular through groove.
Seal mounting groove on the valve seal seat is semi-open type mounting groove, and the inner side of semi-open type mounting groove is wedge shape
Face structure；Seal clamping plate is provided with by fastener in the inner side of valve seal seat, the lower end of the seal clamping plate is provided with
It is in the lozenges of symmetrical structure with the semi-open type mounting groove on valve seal seat, the valve seal seat surrounds with seal clamping plate
Seal mounting groove.
The present invention has the advantages and positive effects of：Due to changing traditional hard sealing knot using above-mentioned technical proposal
Structure, this sealing structure be not present spin friction coordinate caused by large drag forces, valve open when, the blowing pressure is let out and removed, bullet
Property the release of ring energy reserve, valve plate sealing ring can smoothly depart from sealing ring, valve is opened, and late gate rotates to out
Position, its torque greatly save several times times, there occurs the change of matter for the whole work process of valve compared with traditional hard seal butterfly valve
Change.The butterfly valve seal precision of the present invention can reach high level.The present invention is ingenious in design, changes the biography of valve sealing structure
System thinking, it is off the beaten track, it is the innovation of gate valve Seal Design, achieves unexpected good result, be worthy of popularization.With
Traditional sealing structure after sealing wears, can be repaired compared to having certain compensating action by ftercompction
Sealing effectiveness, compares that sealing effectiveness is more preferable, and service life is longer with traditional hollow type sealing ring, in addition, product structure of the present invention
Relatively easy, processing and maintenance are easy, therefore cost is low；And it is easy to use, effect is good.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention 1；
Fig. 2 is the structural representation of Application Example 1；
Fig. 3 is I portions enlarged drawing in 2；
Fig. 4 is the structural representation of the embodiment of the present invention 2；
Fig. 5 is the structural representation of Application Example 2；
Fig. 6 is II portions enlarged drawing in 5；
Fig. 7 is the structural representation of the embodiment of the present invention 3；
Fig. 8 is the structural representation of Application Example 3；
Fig. 9 is III portions enlarged drawing in Fig. 8.
In figure：1st, seal；1-1, connecting portion；1-2, sealing；1-3, hollow type pressure containment chamber；1-4, wedge-shaped pretension
Face；1-5, sealing surface；1-6, supercharging compensation passage；1-7, only lock station；2nd, supercharging compensation mouth；3rd, valve seal seat；3-1, sealing
Body mounting groove；3-10, limiting stand；4th, seal clamping plate；4-1, lozenges；5th, valve body；6th, valve element；8th, annular seal space is overhauled；
Embodiment
In order to further understand the content, features and effects of the present invention, hereby enumerating following examples, and coordinate accompanying drawing
Describe in detail as follows：
Embodiment 1, referring to Fig. 1, a kind of tire formula sealing structure on valve, including seal 1, the seal
Including connecting portion 1-1, sealing 1-2, the connecting portion and sealing are structure as a whole, and the profile and valve body of the connecting portion are close
The seal mounting groove 3-1 sealed on seat 3 shape is identical；The interior of the connecting portion is provided with hollow type pressure containment chamber 1-3, described
Pressure containment chamber is centrally located at 1/4 to 1/2 place of seal whole height, and close to connecting portion side；The connecting portion is cut
Face is circular configuration, and wedge-shaped pretension face 1-4 is provided with the outside of connecting portion and sealing；The lower surface of the sealing is provided with close
Front cover 1-5；The connecting portion is provided with the supercharging compensation passage 1-6 connected with pressure containment chamber, is provided with the outside of connecting portion
The supercharging connected with supercharging compensation passage compensates mouth 2；The seal mounting groove 3-1 that the valve seal seat 3 is provided with is annular
Groove, the connecting portion of the seal are inlaid in annular through groove.
Application Example 1, refers to Fig. 2 to 3, and on a kind of online maintenance three-way half ball valve with pressure, three-way half ball valve is main
Including valve body 5, valve element 6, Switch seals 7 are installed by spherical crown on valve element, the valve seal seat 3 in maintenance annular seal space 8
The seal mounting groove 3-1 that lower end is provided with, the seal 1 of the structure of above-described embodiment 1, the sealing are installed in seal mounting groove
The connecting portion of body is inlaid in seal mounting groove 3-1, and the sealing 1-2 of the seal stretches out seal mounting groove, works as place
The sealing surface of seal is bonded with the metallic sealing section below Switch seals when inspecting state, and then realizes sealing,
Maintenance or the replacement operation of Switch seals can be carried out after sealing in maintenance annular seal space；After seal wears,
Revealed when causing maintenance to seal, it can not be overhauled, can now open supercharging compensation mouth, be mended by being pressurized the air inlet of compensation mouth
Pressure, due to being provided with wedge-shaped pretension face 1-4 in the outside of connecting portion and sealing during ftercompction, seal will not be from seal
Come off in mounting groove；Elastic deformation occurs due to the constraint of seal mounting groove, and then to sealing, is mended so as to serve sealing
The effect repaid；When removing, or reducing furthermore it is also possible to which the blowing pressure is let out, it is possible to achieve quick valve element of opening seals with maintenance
The contact of the valve seal seat of intracavitary, rapidly enter normal aperture state.
Embodiment 2, referring to Fig. 4, a kind of tire formula sealing structure on valve, including seal 1, the seal
Including connecting portion 1-1, sealing 1-2, the connecting portion and sealing are structure as a whole, and the profile and valve body of the connecting portion are close
The seal mounting groove 3-1 sealed on seat 3 shape is identical；The interior of the connecting portion is provided with hollow type pressure containment chamber 1-3, described
Pressure containment chamber is centrally located at 1/4 to 1/2 place of seal whole height, and close to connecting portion side；The connecting portion is cut
Face is triangular structure, and wedge-shaped pretension face 1-4 is provided with the outside of connecting portion and sealing；The lower surface of the sealing is provided with
Sealing surface 1-5；The connecting portion is provided with the supercharging compensation passage 1-6 connected with pressure containment chamber, is set on the outside of connecting portion
There is the supercharging connected with supercharging compensation passage to compensate mouth 2；Seal mounting groove on the valve seal seat 3 is installed for semi-open type
Groove 3-2, the inner side of semi-open type mounting groove is lozenges structure；Seal is provided with by fastener in the inner side of valve seal seat
Clamping plate 4, the lower end of the seal clamping plate are provided with the lozenges with the semi-open type mounting groove on valve seal seat in symmetrical structure
4-1, the valve seal seat surround seal mounting groove 3-1 with seal clamping plate.
Application Example 2, refers to Fig. 5 to 6, and on a kind of online maintenance three-way half ball valve with pressure, three-way half ball valve is main
Including valve body, valve element, Switch seals are installed by spherical crown on valve element, the lower end of the valve seal seat in maintenance annular seal space is set
Some seal mounting grooves, the seal 1 of the structure of above-described embodiment 2, the connection of the seal are installed in seal mounting groove
Valve seal seat described in portion 1-1 surrounds seal mounting groove 3-1 with seal clamping plate 4, and the sealing stretching of the seal is close
Body mounting groove 3-1 is sealed, the sealing surface of seal and the metallic sealing section below Switch seals when in inspecting state
Fitting, and then sealing is realized, maintenance or the replacement operation of Switch seals can be carried out after sealing in maintenance annular seal space；When
After seal wears, reveal, can not be overhauled when causing maintenance to seal, can now open supercharging compensation mouth, pass through
Supercharging compensation mouth air inlet ftercompction, during ftercompction due to the outside of connecting portion and sealing be provided with wedge-shaped pretension face 1-4 with
The lozenges of seal mounting groove both sides coordinates, and seal will not come off out of seal mounting groove；Due to seal mounting groove
Constraint, and then to sealing occur elastic deformation, so as to serve the effect of sealing compensation；Furthermore it is also possible to inflation is pressed
Power, which is let out, to be removed, or during reduction, it is possible to achieve the quick contact opened valve element and overhaul the valve seal seat in annular seal space, quickly enter
Enter normal aperture state.
Embodiment 3, referring to Fig. 7, a kind of tire formula sealing structure on valve, including seal 1, the seal
Including connecting portion 1-1, sealing 1-2, the connecting portion and sealing are structure as a whole, and the profile and valve body of the connecting portion are close
The seal mounting groove 3-1 sealed on seat 3 shape is identical；The interior of the connecting portion is provided with hollow type pressure containment chamber 1-3, described
Pressure containment chamber is centrally located at 1/4 to 1/2 place of seal whole height, and close to connecting portion side；The connecting portion is cut
Face is triangular structure, and wedge-shaped pretension face 1-4 is provided with the outside of connecting portion and sealing；The outside of the connecting portion is provided with wedge
Only lock station 1-7 or only lock tooth are additionally provided with shape pretension face；The lower surface of the sealing is provided with sealing surface 1-5；The connecting portion
The supercharging compensation passage 1-6 connected with pressure containment chamber is provided with, is provided with the outside of connecting portion and is connected with supercharging compensation passage
Supercharging compensation mouth 2.
Application Example 3, refers to Fig. 8 to 9, a kind of butterfly valve, including valve element, valve body, and the valve body inner periphery is provided with valve
Body seal receptacle 3, described valve seal seat are provided with triangle annular sealing member mounting groove 3-1, seal mounting groove 3-1 and set
Limited location platform 3-10, the connecting portion of above-mentioned seal are inlaid in seal mounting groove 3-1, and the outside of the connecting portion is provided with wedge shape
Only lock station 1-7 is additionally provided with pretension face or only lock tooth is bonded with limiting stand 3-10, the sealing of described seal stretches out sealing
Body mounting groove 3-1；When butterfly valve is closed, the sealing of seal is bonded real with the stainless steel sealing ring on the outside of valve plate
Now seal；After seal wears, seal leakage is caused, supercharging compensation mouth can be now opened, mouth is compensated by being pressurized
Air inlet ftercompction, installed during ftercompction due to being provided with wedge-shaped pretension face 1-4 in the outside of connecting portion and sealing with seal
The lozenges of groove both sides coordinates, and along with only lock station 1-7 or the only constraint between lock tooth and limiting stand 3-10, seal will not be from
Come off in seal mounting groove；Due to the constraint of seal mounting groove, elastic deformation occurs with sealing portion in pressure breaking-out, from
And serve the effect of sealing compensation；When removing, or reducing furthermore it is also possible to which the blowing pressure is let out, it is possible to achieve quick to open
Valve element contact with the valve seal seat in maintenance annular seal space, rapidly enters normal aperture state.
In summary, traditional hard sealing structure is changed using above-mentioned technical proposal, rotation is not present in this sealing structure
Turn large drag forces caused by frictional fit, when valve is opened, the blowing pressure is let out and removed, elastic ring energy reserve discharges, and valve plate is close
Seal ring can smoothly depart from sealing ring, and valve is opened, and late gate rotates to open position, its torque and traditional hard seal butterfly valve
Compare, greatly save several times, there occurs the change of matter for the whole work process of valve.The butterfly valve seal precision of the present invention can be with
Reach high level.The present invention is ingenious in design, changes the conventional thought of valve sealing structure, off the beaten track, is gate valve sealing
The innovation of design, unexpected good result is achieved, is worthy of popularization.Compared with traditional sealing structure with certain
Compensating action, after sealing wears, reparation sealing effectiveness, and traditional hollow type sealing ring can be carried out by ftercompction
More preferable compared to sealing effectiveness, service life is longer, in addition, product structure of the present invention is relatively easy, processing and maintenance are easy, therefore
Cost is low；And it is easy to use, effect is good.
It is described above to be only the preferred embodiments of the present invention, any formal limitation not is made to the present invention,
Every technical spirit according to the present invention belongs to any simple modification made for any of the above embodiments, equivalent variations and modification
In the range of technical solution of the present invention.
Claims (6)
1. a kind of tire formula sealing structure on valve, including seal, it is characterised in that：The seal includes connection
Portion, sealing, the connecting portion and sealing are structure as a whole, profile and the seal on valve seal seat of the connecting portion
The shape of mounting groove is identical；The interior of the connecting portion is provided with hollow type pressure containment chamber, and the pressure containment chamber is centrally located at
1/4 to 1/2 place of seal whole height, and close to connecting portion side；Wedge-shaped pretension is provided with the outside of connecting portion and sealing
Face；The lower surface of the sealing is provided with sealing surface；It is logical that the connecting portion is provided with the supercharging compensation connected with pressure containment chamber
Road, the supercharging connected with supercharging compensation passage is provided with the outside of connecting portion and compensates mouth.
2. the tire formula sealing structure according to claim 1 on valve, it is characterised in that：The outside of the connecting portion
Tooth is locked provided with being additionally provided with only lock station on wedge-shaped pretension face or stopping.
3. the tire formula sealing structure according to claim 1 on valve, it is characterised in that：The section of the connecting portion
For circular configuration.
4. the tire formula sealing structure according to claim 1 on valve, it is characterised in that：The section of the connecting portion
For triangular structure.
5. the tire formula sealing structure according to claim 1 on valve, it is characterised in that：On the valve seal seat
The seal mounting groove being provided with is annular through groove, and the connecting portion of the seal is inlaid in annular through groove.
6. the tire formula sealing structure according to claim 1 on valve, it is characterised in that：On the valve seal seat
Seal mounting groove be semi-open type mounting groove, the inner side of semi-open type mounting groove is lozenges structure；In valve seal seat
Side is provided with seal clamping plate by fastener, and the lower end of the seal clamping plate is provided with pacifies with the semi-open type on valve seal seat
Tankage is in the lozenges of symmetrical structure, and the valve seal seat surrounds seal mounting groove with seal clamping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039008.9A CN107606225A (en) | 2017-10-30 | 2017-10-30 | Tire formula compensation sealing structure on valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711039008.9A CN107606225A (en) | 2017-10-30 | 2017-10-30 | Tire formula compensation sealing structure on valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107606225A true CN107606225A (en) | 2018-01-19 |
Family
ID=61083947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711039008.9A Pending CN107606225A (en) | 2017-10-30 | 2017-10-30 | Tire formula compensation sealing structure on valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107606225A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB362689A (en) * | 1930-12-18 | 1931-12-10 | Sydney Robert Boyce | Improvements in or relating to joints for resisting high pressures |
| US4227702A (en) * | 1977-12-23 | 1980-10-14 | Agfa-Gevaert, A.G. | Inflatable sealing device |
| EP0175531A2 (en) * | 1984-09-15 | 1986-03-26 | The British Petroleum Company p.l.c. | Sealing assembly |
| EP0237770A1 (en) * | 1986-02-10 | 1987-09-23 | Le Joint Francais | Inflatable seal, operable by depressurization |
| EP0466531A1 (en) * | 1990-07-10 | 1992-01-15 | LE JOINT FRANCAIS, Société en Nom Collectif | Inflatable seal for door or sliding panel |
| CN204114224U (en) * | 2014-09-13 | 2015-01-21 | 良精集团有限公司 | A kind of novel Unloading ball valve |
| CN104847908A (en) * | 2014-11-22 | 2015-08-19 | 奉化市智新仪表科技有限公司 | Seal butterfly valve with internal channel inflated with air |
| CN205689802U (en) * | 2016-06-20 | 2016-11-16 | 浙江亚光科技股份有限公司 | Semisphere valve |
| CN205824208U (en) * | 2016-06-27 | 2016-12-21 | 华北电力大学 | A kind of hermetically sealed butterfly valve of novel big orifice |
| CN206036252U (en) * | 2016-07-06 | 2017-03-22 | 华北电力大学 | Novel inflatable seal butterfly valve |
| CN207750519U (en) * | 2017-10-30 | 2018-08-21 | 天津塘沽瓦特斯阀门有限公司 | Tire formula compensation sealing structure on valve |
-
2017
- 2017-10-30 CN CN201711039008.9A patent/CN107606225A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB362689A (en) * | 1930-12-18 | 1931-12-10 | Sydney Robert Boyce | Improvements in or relating to joints for resisting high pressures |
| US4227702A (en) * | 1977-12-23 | 1980-10-14 | Agfa-Gevaert, A.G. | Inflatable sealing device |
| EP0175531A2 (en) * | 1984-09-15 | 1986-03-26 | The British Petroleum Company p.l.c. | Sealing assembly |
| EP0237770A1 (en) * | 1986-02-10 | 1987-09-23 | Le Joint Francais | Inflatable seal, operable by depressurization |
| EP0466531A1 (en) * | 1990-07-10 | 1992-01-15 | LE JOINT FRANCAIS, Société en Nom Collectif | Inflatable seal for door or sliding panel |
| CN204114224U (en) * | 2014-09-13 | 2015-01-21 | 良精集团有限公司 | A kind of novel Unloading ball valve |
| CN104847908A (en) * | 2014-11-22 | 2015-08-19 | 奉化市智新仪表科技有限公司 | Seal butterfly valve with internal channel inflated with air |
| CN205689802U (en) * | 2016-06-20 | 2016-11-16 | 浙江亚光科技股份有限公司 | Semisphere valve |
| CN205824208U (en) * | 2016-06-27 | 2016-12-21 | 华北电力大学 | A kind of hermetically sealed butterfly valve of novel big orifice |
| CN206036252U (en) * | 2016-07-06 | 2017-03-22 | 华北电力大学 | Novel inflatable seal butterfly valve |
| CN207750519U (en) * | 2017-10-30 | 2018-08-21 | 天津塘沽瓦特斯阀门有限公司 | Tire formula compensation sealing structure on valve |
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