CN105546137A - Sealing structure - Google Patents
Sealing structure Download PDFInfo
- Publication number
- CN105546137A CN105546137A CN201610071531.9A CN201610071531A CN105546137A CN 105546137 A CN105546137 A CN 105546137A CN 201610071531 A CN201610071531 A CN 201610071531A CN 105546137 A CN105546137 A CN 105546137A
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- China
- Prior art keywords
- sealing
- functor
- wall
- inwall
- spacing preiection
- Prior art date
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/46—Attachment of sealing rings
Abstract
The invention provides a sealing structure which comprises a sealing part installed outside a function part. The function part is movably sleeved with the sealing part. The sealing structure has the advantages that the sealing part and the function part are movably connected, assembly is quite convenient, the structure of the function part is not damaged, the fit degree of the sealing part and the face to be sealed can be automatically adjusted through the sealing part, and the sealing effect is good; in addition, the coaxiality requirement is low after the sealing part and the function part are assembled, and the production cost is greatly reduced.
Description
Technical field
The present invention relates to a kind of sealing configuration.
Background technique
Sealing configuration conventional at present, mainly comprises the Sealing be fixedly mounted on outside functor, and it is outer or one-body molded with functor that Sealing is generally fixed on functor.Sealing configuration is when sealing the mechanism of needs sealing, mechanism to be sealed generally has the intercommunicating pore be communicated with between the chamber that two force value are different, the side of intercommunicating pore is formed with to be sealed, and the end face outside of Sealing is sealing surface and is adjacent to face to be sealed thus realizes sealing.Due to Sealing and functor is one-body molded or interference fit forms a fixed connection, because producing or assembly relation, the coaxality of Sealing and functor cannot reach desirable, and adopt between the sealing surface of Sealing and to be sealed of mechanism to be sealed and firmly seal, if the slightly deviation of the coaxality between Sealing and functor, the tilting of relatively to be sealed of sealing surface will be caused, there is gap between sealing surface and to be sealed, and then cause the seal failure between sealing surface and to be sealed.In addition, if Sealing and functor adopt one-body molded, then can be higher to the requirement on machining accuracy of whole product, improve cost of production; If Sealing and functor adopt interference fit to be connected, be easy to the structure destroying functor when being assembled on functor by Sealing, thus cause the function imperfection of functor or suffer damage.
Summary of the invention
There is above-mentioned deficiency to overcome in prior art, the invention provides a kind of simple and compact for structure, cost is low, the sealing configuration of easy for installation, good sealing effect.
The technological scheme that the present invention solves its technical problem is: a kind of sealing configuration, comprises the Sealing be arranged on outside functor, and described Sealing movable set is outside described functor.
Further, described functor is outside equipped with and is limited in by described Sealing on described functor and ensures that described Sealing can the limit structure of relatively described functor activity.
Further, described limit structure comprises recessed restraining groove on the outer wall of described functor, the inwall of described Sealing stretches in described restraining groove, and Spielpassung between the diapire of the inwall of described Sealing and described restraining groove, the width dimensions of described Sealing is less than the width dimensions of described restraining groove, and width dimensions here refers to the size along its axis.
Further, described limit structure comprises the spacing preiection of at least one circle projection on the outer wall of described functor and the recessed limited impression on the inwall of described Sealing of at least one circle, the number of spacing preiection is equal to the number of limited impression, described spacing preiection one_to_one corresponding stretches in described limited impression, and Spielpassung between described spacing preiection and described limited impression, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
Further, described limit structure comprises the spacing preiection of at least one circle projection on the inwall of described Sealing and the recessed limited impression on the outer wall of described functor of at least one circle, the number of spacing preiection is equal to the number of limited impression, described spacing preiection one_to_one corresponding stretches in described limited impression, and Spielpassung between described spacing preiection and described limited impression, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
Further, described limit structure comprises the spacing preiection of two circle projections on the outer wall of described functor, described Sealing is placed between two described spacing preiections, and the internal diameter size of described Sealing is less than the outside dimension of described spacing preiection, the width dimensions of described Sealing is less than the distance between two described spacing preiections, here width dimensions refers to the size along its axis, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
Further, the described limit structure shaft shoulder and comprised on the outer wall being located at described functor is fixed on the block piece on the outer wall of described functor, described Sealing is arranged between the described shaft shoulder and described block piece, and the width dimensions of described Sealing is less than the distance between the described shaft shoulder and described block piece, here width dimensions refers to the size along its axis, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
Further, the outer wall of described functor is provided with draw-in groove, and described block piece is be stuck in the collar in described draw-in groove.
Further, the outer wall of described functor is provided with screw thread, and described block piece is the nut being arranged in described screw thread place.
Further, the present invention also provides a kind of application of sealing configuration, namely described functor is heat responsive element, described heat responsive element comprises the housing with upper shed, lid is located at the upper cover of the opening of this housing, and the temperature-sensitive main body be located in this housing, this temperature-sensitive main body comprises lower end in described housing and upper end is pressed on sebific duct between described upper cover and the top of housing, be filled in the temperature-sensitive thing between the outer wall of this sebific duct and the inwall of described housing, and the push rod be slidably installed in this sebific duct, the upper end of this push rod is passed described upper cover and stretches out outside described upper cover, described Sealing is movably installed with outside described housing.
The present invention in use, functor is slidably installed in mechanism to be sealed, the lower surface of Sealing is sealing surface and just to be sealed of the intercommunicating pore place of mechanism to be sealed, when needing sealing, a power is applied to functor thus makes functor band dynamic seal near to be sealed, sealing surface can fit tightly with face to be sealed under the effect of thrust, realizes sealing; When not needing sealing, apply a reverse power to functor thus make functor band dynamic seal away to be sealed, sealing surface is separated with to be sealed, thus opens intercommunicating pore.Because Sealing is movably arranged on outside functor, even if the coaxality of Sealing and functor slightly deviation, or the coaxality slightly deviation of to be sealed of Sealing and mechanism to be sealed, or the coaxality slightly deviation of to be sealed of functor and mechanism to be sealed, Sealing can regulate automatically, ensures the laminating degree between sealing surface and to be sealed, good sealing effect, and be flexibly connected between Sealing with functor, assemble very convenient, and cost of production is low.This sealing configuration can be widely used in the mechanism needing sealing, the sealing in the various fields such as such as oil, petrochemical industry, chemical industry, metallurgy, electric power, water conservancy, urban construction, machinery, coal, food, air-conditioning, HVAC.
When the present invention is applied to heat responsive element, heat responsive element is mainly used in heat control valve, have in the valve casing of heat control valve cavity and with the flow channel of this cavity connects and flow pass, the joint of flow channel and cavity is formed with to be sealed, heat responsive element is arranged in cavity, the upper end of the push rod of heat responsive element is fixed on the roof of cavity, and the lower end surface of the Sealing of heat responsive element is sealing surface and just treats sealing surface, is supported with spring between the lower end of Sealing and valve casing.When not working, Sealing is under the action of the spring away to be sealed, and valve is in normally open, and flow channel is communicated with flow pass by cavity; During work, when in the valve of heat control valve, fluid temperature reaches setting temperature, temperature-sensitive thing is heated and starts to expand, compress sebific duct thus promote push rod and upwards produce displacement, reverse promotion housing, Sealing move downward thus close to be sealed, and sealing surface can fit tightly with face to be sealed, realize sealing.Because Sealing is movably arranged on outside housing, even if the coaxality of Sealing and housing slightly deviation, or the coaxality slightly deviation of Sealing and to be sealed, or the coaxality of housing and flow channel slightly deviation, Sealing can regulate automatically, ensure the laminating degree between sealing surface and to be sealed, good sealing effect, and be flexibly connected between Sealing with housing, assemble very convenient, also can not destroy the internal structure of housing, and compared with being fixedly connected with, cost of production is cheaper.
Beneficial effect of the present invention is: for being flexibly connected between Sealing with functor, not only assemble very convenient, the structure of functor can not be destroyed, and Sealing can regulate the laminating degree between to be sealed automatically, good sealing effect, moreover the coaxality after Sealing and functor assemble requires lower, greatly reduces cost of production.
Accompanying drawing explanation
Fig. 1 is the present invention open mode figure in use.
Fig. 2 is the present invention sealing state figure in use.
Fig. 3 is the first mode of execution of limit structure of the present invention.
Fig. 4 is the second mode of execution of limit structure of the present invention.
Fig. 5 is the third mode of execution of limit structure of the present invention.
Fig. 6 is the 4th kind of mode of execution of limit structure of the present invention.
Fig. 7 is the 5th kind of mode of execution of limit structure of the present invention.
Fig. 8 is the 6th kind of mode of execution of limit structure of the present invention.
Fig. 9 is the open mode figure of the present invention when being applied to heat responsive element.
Figure 10 is the sealing state figure of the present invention when being applied to heat responsive element.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to Fig. 1, Fig. 2, a kind of sealing configuration, comprise the Sealing 2 be arranged on outside functor 1, described Sealing 2 movable set is outside described functor 1, and described functor 1 is outside equipped with and is limited in by described Sealing 2 on described functor and ensures that described Sealing 2 can the limit structure of relatively described functor 1 activity.
The first mode of execution of limit structure, with reference to Fig. 3, described limit structure comprises recessed restraining groove 3 on the outer wall of described functor 1, the inwall of described Sealing 2 stretches in described restraining groove 3, and Spielpassung between the inwall of described Sealing 2 and the diapire of described restraining groove 3, the width dimensions of described Sealing 2 is less than the width dimensions of described restraining groove 3, and width dimensions here refers to the size along its axis.In order to Sealing 2 can be made to load smoothly in restraining groove 3, generally guiding surface is set on the sidewall being positioned at outside of restraining groove.
The second mode of execution of limit structure, with reference to Fig. 4, described limit structure comprises the spacing preiection 4 of at least one circle projection on the outer wall of described functor 1 and the recessed limited impression 5 on the inwall of described Sealing 2 of at least one circle, the number of spacing preiection is equal to the number of limited impression, described spacing preiection 4 one_to_one corresponding stretches in described limited impression 5, and Spielpassung between described spacing preiection 4 and described limited impression 5, Spielpassung between the inwall of described Sealing 2 and the outer wall of described functor 1.The shape of spacing preiection 4 can be square, spherical or pointed, and the shape of spacing preiection is pointed more excellent, and spacing preiection 4 can be made to load smoothly in limited impression 5.In the present embodiment, spacing preiection and limited impression are respectively a circle, and the number of turns of spacing preiection and limited impression can also be 2 circles or the multi-turn such as 3 circles or 4 circles.
The third mode of execution of limit structure, with reference to Fig. 5, described limit structure comprises the spacing preiection 4 of at least one circle projection on the inwall of described Sealing 2 and the recessed limited impression 5 on the outer wall of described functor 1 of at least one circle, the number of spacing preiection is equal to the number of limited impression, described spacing preiection 4 one_to_one corresponding stretches in described limited impression 5, and Spielpassung between described spacing preiection 4 and described limited impression 5, Spielpassung between the inwall of described Sealing 2 and the outer wall of described functor 1.The shape of spacing preiection 4 can be square, spherical or pointed, and the shape of spacing preiection 4 is pointed more excellent, and spacing preiection 4 can be made to load smoothly in limited impression 5.In the present embodiment, spacing preiection and limited impression are respectively a circle, and the number of turns of spacing preiection and limited impression can also be 2 circles or the multi-turn such as 3 circles or 4 circles.
4th kind of mode of execution of limit structure, with reference to Fig. 6, described limit structure comprises the spacing preiection 4 of two circle projections on the outer wall of described functor 1, described Sealing 2 is placed between two described spacing preiections 4, and the internal diameter size of described Sealing 2 is less than the outside dimension of described spacing preiection 4, the width dimensions of described Sealing 2 is less than the distance between two described spacing preiections 4, here width dimensions refers to the size along its axis, Spielpassung between the inwall of described Sealing 2 and the outer wall of described functor 1.The shape of spacing preiection 4 can be square, spherical or pointed, and the shape of spacing preiection 4 is pointed more excellent, and Sealing 2 can be made to load smoothly between two spacing preiections 4.
5th kind of mode of execution of limit structure, with reference to Fig. 7, described limit structure comprises the shaft shoulder on the outer wall being located at described functor 16 and and is fixed on block piece on the outer wall of described functor 1, the outer wall of described functor 1 is provided with draw-in groove, described block piece is the collar 7 be stuck in described draw-in groove, described Sealing 2 is arranged between the described shaft shoulder 6 and described collar 7, and the width dimensions of described Sealing 2 is less than the distance between the described shaft shoulder 6 and described collar 7, here width dimensions refers to the size along its axis, Spielpassung between the inwall of described Sealing 2 and the outer wall of described functor 1.First Sealing 2 is sleeved on outside functor 1, and then collar 7 is snapped in draw-in groove, easy for installation.Collar can be made of metal, and also can be made up of nonmetal, can also be made up of pottery.
6th kind of mode of execution of limit structure, with reference to Fig. 8, described limit structure comprises to be located at the shaft shoulder on described functor 16 and and to be fixed on block piece on described functor 1, the outer wall of described functor 1 is provided with screw thread, described block piece is the nut 8 being arranged in described screw thread place, described Sealing 2 is arranged between the described shaft shoulder 6 and described nut 8, and the width dimensions of described Sealing 2 is less than the distance between the described shaft shoulder 6 and described nut 8, here width dimensions refers to the size along its axis, Spielpassung between the inwall of described Sealing 2 and the outer wall of described functor 1.First Sealing 2 is sleeved on outside functor 1, and then nut 8 is screwed in the screw thread place of functor 1, easy for installation.
The present invention in use, functor 1 is slidably installed in mechanism 9 to be sealed, the lower surface of Sealing 2 is that sealing surface 11 is also just to the face to be sealed 12 at intercommunicating pore 10 place of mechanism to be sealed, when needing sealing, a power is applied to functor 1 thus makes functor band dynamic seal 2 near face 12 to be sealed, sealing surface 11 can fit tightly with face 12 to be sealed under the effect of the thrust of functor, realizes sealing; When not needing sealing, apply a reverse power to functor 1 thus make functor band dynamic seal 2 away from face 12 to be sealed, sealing surface is separated with to be sealed, thus opens intercommunicating pore 10.Because Sealing 2 is movably arranged on outside functor 1, even if the coaxality of Sealing and functor slightly deviation, or the coaxality slightly deviation of to be sealed of Sealing and mechanism to be sealed, or the coaxality slightly deviation of to be sealed of functor and mechanism to be sealed, Sealing can regulate automatically, ensures the laminating degree between sealing surface 11 and face to be sealed 12, good sealing effect, and be flexibly connected between Sealing with functor, assemble very convenient, and cost of production is low.This sealing configuration can be widely used in the mechanism needing sealing, the sealing in the various fields such as such as oil, petrochemical industry, chemical industry, metallurgy, electric power, water conservancy, urban construction, machinery, coal, food, air-conditioning, HVAC.
The present invention also provides a kind of application of sealing configuration, namely described functor 1 is heat responsive element, with reference to Fig. 9, Figure 10, described heat responsive element comprises the housing 13 with upper shed, lid is located at the upper cover of the opening of this housing 13, and the temperature-sensitive main body be located in this housing, this temperature-sensitive main body comprises lower end in described housing and upper end is pressed on sebific duct between described upper cover and the top of housing, be filled in the temperature-sensitive thing between the outer wall of this sebific duct and the inwall of described housing, and the push rod 14 be slidably installed in this sebific duct, the upper end of this push rod is passed described upper cover and stretches out outside described upper cover, described Sealing 2 is movably installed with outside described housing 13.
When the present invention is applied to heat responsive element, heat responsive element is mainly used in heat control valve, have in the valve casing 15 of heat control valve cavity 16 and with the flow channel 17 of this cavity connects and flow pass 18, the joint of flow channel and cavity is formed with face 12 to be sealed, heat responsive element is arranged in cavity 16, the upper end of the push rod 14 of heat responsive element is fixed on the roof of cavity, the lower end surface of the Sealing 2 of heat responsive element is sealing surface 11 and is just treating sealing surface 12, is supported with spring 19 between the lower end of Sealing 2 and valve casing 15.When not working, Sealing 2 is away from face 12 to be sealed under the effect of spring 19, and valve is in normally open, and flow channel 17 is communicated with flow pass 18 by cavity 16; During work, when in the valve of heat control valve, fluid temperature reaches setting temperature, temperature-sensitive thing is heated and starts to expand, compress sebific duct thus promote push rod 14 and upwards produce displacement, reverse promotion housing 13, Sealing 2 move downward thus close face 12 to be sealed, sealing surface 11 can fit tightly with face 12 to be sealed under the effect of the thrust of housing, realizes sealing.Because Sealing 2 is movably arranged on outside housing 13, even if the coaxality of Sealing and housing slightly deviation, or the coaxality slightly deviation of Sealing and to be sealed, or the coaxality of housing and flow channel slightly deviation, Sealing can regulate automatically, ensure the laminating degree between sealing surface and to be sealed, good sealing effect, and be flexibly connected between Sealing with housing, assemble very convenient, also can not destroy the internal structure of housing, and compared with being fixedly connected with, cost of production is cheaper.
Claims (11)
1. a sealing configuration, comprises the Sealing be arranged on outside functor, it is characterized in that: described Sealing movable set is outside described functor.
2. sealing configuration according to claim 1, is characterized in that: described functor is outside equipped with and is limited in by described Sealing on described functor and ensures that described Sealing can the limit structure of relatively described functor activity.
3. sealing configuration according to claim 2, it is characterized in that: described limit structure comprises recessed restraining groove on the outer wall of described functor, the inwall of described Sealing stretches in described restraining groove, and Spielpassung between the diapire of the inwall of described Sealing and described restraining groove, the width dimensions of described Sealing is less than the width dimensions of described restraining groove.
4. sealing configuration according to claim 2, it is characterized in that: described limit structure comprises the spacing preiection of at least one circle projection on the outer wall of described functor and the recessed limited impression on the inwall of described Sealing of at least one circle, described spacing preiection one_to_one corresponding stretches in described limited impression, and Spielpassung between described spacing preiection and described limited impression, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
5. sealing configuration according to claim 2, it is characterized in that: described limit structure comprises the spacing preiection of at least one circle projection on the inwall of described Sealing and the recessed limited impression on the outer wall of described functor of at least one circle, described spacing preiection one_to_one corresponding stretches in described limited impression, and Spielpassung between described spacing preiection and described limited impression, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
6. sealing configuration according to claim 2, it is characterized in that: described limit structure comprises the spacing preiection of two circle projections on the outer wall of described functor, described Sealing is placed between two described spacing preiections, and the internal diameter size of described Sealing is less than the outside dimension of described spacing preiection, the width dimensions of described Sealing is less than the distance between two described spacing preiections, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
7. sealing configuration according to claim 2, it is characterized in that: the described limit structure shaft shoulder and comprised on the outer wall being located at described functor is fixed on the block piece on the outer wall of described functor, described Sealing is arranged between the described shaft shoulder and described block piece, and the width dimensions of described Sealing is less than the distance between the described shaft shoulder and described block piece, Spielpassung between the inwall of described Sealing and the outer wall of described functor.
8. sealing configuration according to claim 7, is characterized in that: the outer wall of described functor is provided with draw-in groove, and described block piece is be stuck in the collar in described draw-in groove.
9. sealing configuration according to claim 7, is characterized in that: the outer wall of described functor is provided with screw thread, and described block piece is the nut being arranged in described screw thread place.
10. according to the sealing configuration one of claim 1 ~ 9 Suo Shu, it is characterized in that: described functor is heat responsive element.
11. sealing configurations according to claim 10, it is characterized in that: described heat responsive element comprises the housing with upper shed, lid is located at the upper cover of the opening of this housing, and the temperature-sensitive main body be located in this housing, this temperature-sensitive main body comprises lower end in described housing and upper end is pressed on sebific duct between described upper cover and the top of housing, be filled in the temperature-sensitive thing between the outer wall of this sebific duct and the inwall of described housing, and the push rod be slidably installed in this sebific duct, the upper end of this push rod is passed described upper cover and stretches out outside described upper cover, described Sealing is movably installed with outside described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071531.9A CN105546137B (en) | 2016-02-02 | 2016-02-02 | A kind of sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610071531.9A CN105546137B (en) | 2016-02-02 | 2016-02-02 | A kind of sealing structure |
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| CN105546137A true CN105546137A (en) | 2016-05-04 |
| CN105546137B CN105546137B (en) | 2019-03-05 |
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| US4113268A (en) * | 1977-03-15 | 1978-09-12 | Posi-Seal International, Inc. | Extended temperature range valve seal |
| DE10354192A1 (en) * | 2003-11-20 | 2005-06-02 | Danfoss A/S | radiator valve |
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| CN201636317U (en) * | 2010-03-25 | 2010-11-17 | 董昶福 | Triple seal ring |
| CN201819450U (en) * | 2010-10-13 | 2011-05-04 | 山东力诺瑞特新能源有限公司 | Frame sealing structure for solar thermal collector |
| CN202171005U (en) * | 2011-05-30 | 2012-03-21 | 杭州三花研究院有限公司 | Thermostatic valve |
| CN202349234U (en) * | 2011-09-15 | 2012-07-25 | 玉环县双安水暖有限公司 | Valve core |
| CN202451844U (en) * | 2011-10-27 | 2012-09-26 | 浙江武荣阀门有限公司 | Pneumatic bent pipe stop valve |
| CN202493770U (en) * | 2012-02-29 | 2012-10-17 | 上海骐荣机械自控有限公司 | Follow-up shaft seal ring structure of butterfly valve |
| CN102788160A (en) * | 2011-05-17 | 2012-11-21 | 靳长斌 | Leak-proof temperature control valve |
| CN103016762A (en) * | 2012-11-05 | 2013-04-03 | 宣达实业集团浙江耐森阀业有限公司 | Bidirectional sealing butterfly valve |
| CN104006168A (en) * | 2014-06-11 | 2014-08-27 | 浙江达柏林阀门有限公司 | Stop valve |
| JP2015055311A (en) * | 2013-09-12 | 2015-03-23 | 株式会社鷺宮製作所 | Control valve |
| CN205592407U (en) * | 2016-02-02 | 2016-09-21 | 慈溪市东南复合材料有限公司 | Sealing structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4113268A (en) * | 1977-03-15 | 1978-09-12 | Posi-Seal International, Inc. | Extended temperature range valve seal |
| DE10354192A1 (en) * | 2003-11-20 | 2005-06-02 | Danfoss A/S | radiator valve |
| CN201487374U (en) * | 2009-07-15 | 2010-05-26 | 铜陵市兴达阀门总厂 | Valve sealing ring |
| CN201636317U (en) * | 2010-03-25 | 2010-11-17 | 董昶福 | Triple seal ring |
| CN201819450U (en) * | 2010-10-13 | 2011-05-04 | 山东力诺瑞特新能源有限公司 | Frame sealing structure for solar thermal collector |
| CN102788160A (en) * | 2011-05-17 | 2012-11-21 | 靳长斌 | Leak-proof temperature control valve |
| CN202171005U (en) * | 2011-05-30 | 2012-03-21 | 杭州三花研究院有限公司 | Thermostatic valve |
| CN202349234U (en) * | 2011-09-15 | 2012-07-25 | 玉环县双安水暖有限公司 | Valve core |
| CN202451844U (en) * | 2011-10-27 | 2012-09-26 | 浙江武荣阀门有限公司 | Pneumatic bent pipe stop valve |
| CN202493770U (en) * | 2012-02-29 | 2012-10-17 | 上海骐荣机械自控有限公司 | Follow-up shaft seal ring structure of butterfly valve |
| CN103016762A (en) * | 2012-11-05 | 2013-04-03 | 宣达实业集团浙江耐森阀业有限公司 | Bidirectional sealing butterfly valve |
| JP2015055311A (en) * | 2013-09-12 | 2015-03-23 | 株式会社鷺宮製作所 | Control valve |
| CN104006168A (en) * | 2014-06-11 | 2014-08-27 | 浙江达柏林阀门有限公司 | Stop valve |
| CN205592407U (en) * | 2016-02-02 | 2016-09-21 | 慈溪市东南复合材料有限公司 | Sealing structure |
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| Publication number | Publication date |
|---|---|
| CN105546137B (en) | 2019-03-05 |
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