CN108869764A - A kind of high leakproofness butterfly valve - Google Patents
A kind of high leakproofness butterfly valve Download PDFInfo
- Publication number
- CN108869764A CN108869764A CN201811018515.9A CN201811018515A CN108869764A CN 108869764 A CN108869764 A CN 108869764A CN 201811018515 A CN201811018515 A CN 201811018515A CN 108869764 A CN108869764 A CN 108869764A
- Authority
- CN
- China
- Prior art keywords
- butterfly plate
- sealing ring
- towards
- valve
- butterfly
- 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.)
- Granted
Links
Classifications
-
- 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
- F16K1/16—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 with pivoted closure-members
- F16K1/18—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 with pivoted closure-members with pivoted discs or flaps
- F16K1/22—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 with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/226—Shaping or arrangements of the sealing
- F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
-
- 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
- F16K1/36—Valve members
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a kind of high leakproofness butterfly valves, including valve body and it is set to the medium channel of valve body, the valve rod worn into medium channel is installed in the valve body, valve seat is installed on the medium channel wall, butterfly plate is installed on the valve rod, pressing ring is installed on the butterfly plate, the installation annular groove around the butterfly plate center of circle is formed between the butterfly plate and pressing ring, the sealing ring that cooperation valve seat realizes sealing is equipped in the installation annular groove, the installation annular groove carries out the deformation gap of deformation towards being formed between the one side and sealing ring of valve seat for sealing ring, the sealing ring is towards the one side in deformation gap and the position of close butterfly plate is extended with the extension worn into being pressed between pressing ring and butterfly plate and by the two.The present invention has the following advantages and effects：The present invention has better service life and can reach better seal effect.
Description
Technical field
The present invention relates to a kind of valve, in particular to a kind of high leakproofness butterfly valve.
Background technique
Butterfly valve is called flap valve, is a kind of simple regulating valve of structure, can be used for the switch control of low pressure pipeline medium
Butterfly valve refers to closure member（Flap or butterfly plate）For disk, a kind of valve of open and close is reached around valve shaft rotation.
Notification number is that the Chinese patent of CN207178716U discloses a kind of three eccentric two-way hard seal butterfly valve, includes valve
Body and valve shaft, valve body lower end are provided with matched hubcap, and the adjustment dress matched with valve shaft is provided in hubcap
It sets, the adjustment device includes the supporting block to offset and adjusting bolt, the lower end surface of the upper surface of supporting block and the valve shaft
It offsets, the annular seal groove I of sealing ring I is provided in supporting block, adjust overhead portion, threaded portion that bolt includes integral type
The rotation section and.
In above-mentioned patent be arranged between floating valve seat, butterfly plate and pressing ring in valve body be clamped with cooperation floating valve seat realize it is close
The sealing ring of envelope, the one side of floating valve seat back to valve body internal perisporium are the sealing surface being obliquely installed, and sealing ring is towards floating valve seat
One side be matching trim inclined surface.Since fluid media (medium) can be to the sealing surface of floating valve seat during quick flowing
Cause to wash away so that floating valve seat contacted with sealing ring become more coarse on one side；In the course of rotation along with butterfly plate
Sealing ring be will drive towards the movement of floating valve seat direction and form opposite extrusion friction with the sealing surface of floating valve seat, caused thick
Rough sealing surface can cause concentrated wear to sealing ring, if things go on like this be easy to influence the service life of sealing ring, to influence
To the sealing effect of butterfly valve.
Summary of the invention
The object of the present invention is to provide a kind of high leakproofness butterfly valve, which can be reduced the abrasion caused by sealing ring, from
And make butterfly valve that there is better seal effect.
Above-mentioned technical purpose of the invention technical scheme is that：A kind of high leakproofness butterfly valve, packet
It includes valve body and is set to the medium channel of valve body, the valve rod worn into medium channel, the medium are installed in the valve body
Be installed with valve seat on conduit wall, butterfly plate be installed on the valve rod, be installed with pressing ring on the butterfly plate, the butterfly plate and pressing ring it
Between be formed with installation annular groove around the butterfly plate center of circle, the sealing ring that cooperation valve seat realizes sealing is equipped in the installation annular groove,
The installation annular groove carries out the deformation gap of deformation towards being formed between the one side and sealing ring of valve seat for sealing ring, described close
One side of the seal towards deformation gap and the position close to butterfly plate, which are extended with to wear between pressing ring and butterfly plate and by the two, presses
The extension held.
By using above-mentioned technical proposal, butterfly valve drives butterfly plate to turn towards valve seat direction during closing by valve rod
It is dynamic so that sealing ring is first contacted with the sealing surface of valve seat close to the side of butterfly plate, sealing ring by from valve seat to it
The active force of application, so that sealing ring can carry out deformation offset towards the direction where deformation gap close to the side of pressing ring；It is logical
The setting for crossing deformation gap enables sealing ring to have space to carry out material deformation, to reduce butterfly valve during the shutdown process, seals
The opposing force that circle is formed between the two with valve seat, reduction are worn for caused by sealing ring, and lift-off seal circle uses the longevity
Life, enables butterfly valve to have better seal effect.And the setting in deformation gap can be reduced sealing ring close to the material of pressing ring side
Structural strength so that sealing ring close to the side of pressing ring when by active force, can preferably carry out deformation；When fluid media (medium) rushes
When hitting one side wall of the sealing ring towards pressing ring, the material deformation that sealing ring can preferably shift towards valve seat direction, thus
Make butterfly valve that there is better seal effect.
It is further arranged to：The installation annular groove includes being set to pressing ring towards the left groove body of butterfly plate one side and being set to
Butterfly plate is correspondingly arranged between the left groove body and right groove body towards the right groove body of pressing ring one side, and the left groove body is towards valve seat
One side wall offers indent, and the indent is connected to setting with butterfly plate close to the one side wall of butterfly plate, the extension include linkage section,
Connect linkage section one end joining section and connect joining section one end pressure holding section, the linkage section back to joining section one end with
Sealing ring is wholely set and offsets close to the one side wall of butterfly plate and the one side wall of right groove body towards left groove body, and the pressure holding section extends
Into indent.
By using above-mentioned technical proposal, presses section and extend into indent and fixation is pressed by both pressing ring and butterfly plate, it should
Kind of setting so that the fixed force of sealing ring is all located at side of the sealing ring towards butterfly plate, enable sealing ring close to the side of pressing ring more
Good carry out deformation effect.
It is further arranged to：The one side wall of the joining section is towards sealing ring, another side wall and right groove body towards valve seat
One side wall offsets, and the joining section is formed with deformation spacing towards between the one side wall and sealing ring of sealing ring, between the deformation
Away from being connected to setting with deformation gap.
By using above-mentioned technical proposal, the setting of deformation spacing increases the deformation space of sealing ring, and makes sealing ring
Fixed force can enable sealing ring preferably to carry out deformation, and the setting energy of deformation spacing more close to the side where butterfly plate
It contradict the sealing ring that deformation occurs will not by joining section, it is ensured that carry out stable deformation.
It is further arranged to：One side of the butterfly plate towards pressing ring and the position corresponding to indent are equipped with limiting slot, described
It is spaced setting between limiting slot and right groove body, is integrally formed with the limit section for extending into limiting slot in the pressure holding section.
By using above-mentioned technical proposal, the setting for limiting section increases contact of the sealing ring with pressing ring and butterfly plate between the two
Area, and extend the curved path of fixed seal ring, better fixed effect is reached to sealing ring.
It is further arranged to：The one side of the left groove body towards right groove body is equipped with left groove, and the sealing ring corresponds to a left side
The position of groove extends into left groove；The one side of the right groove body towards left groove body is equipped with right groove, the sealing ring and company
The position that section is connect corresponding to right groove extends into right groove.
By using above-mentioned technical proposal, the setting of left groove and right groove carries out the sealing ring being located in mounting ring slot
Further limit, prevents sealing ring to be detached from installation annular groove when excessive deformation occurs.
It is further arranged to：The annular compartment around the butterfly plate center of circle is offered inside the sealing ring.
By using above-mentioned technical proposal, the setting of chamber is further reduced the strength of materials of sealing ring, so that sealing ring
Material deformation can be more preferably carried out when by applied external force, worn for caused by itself to reduce, extended making for itself
Use the service life.
It is further arranged to：The stem internal is equipped with air inlet pipe, and one end of the air inlet pipe is worn from the side wall of valve rod
It is connected to after out and with chamber fixation.
By using above-mentioned technical proposal, gas is injected towards chamber interior by air inlet pipe, is used by the gas of injection
In the volume of control sealing ring, so that sealing ring is able to cooperate valve seat and reaches better seal effect, when butterfly plate is when needing to rotate,
Internal pressure by reducing chamber prevents the excessive wear of sealing ring for reducing the volume of sealing ring；And this kind of setting side
Formula can make the sealing ring under normal condition when that valve seat can not be cooperated to be sealed, and be able to achieve sealing ring by the gas of injection
Emergency sealing, promotes the practicability of butterfly valve.
In conclusion the invention has the advantages that：The present invention has better service life and can reach more preferable
Sealing effect.
Detailed description of the invention
Fig. 1 is the longitudinal sectional view of embodiment；
Fig. 2 is the transverse sectional view of embodiment；
Fig. 3 is the portion A enlarged drawing in Fig. 2.
In figure：1, valve body；2, medium channel；3, valve rod；4, valve seat；5, butterfly plate；6, pressing ring；7, annular groove is installed；7.1, left
Groove body；7.2, right groove body；8, sealing ring；9, deformation gap；10, extension；10.1, linkage section；10.2, joining section；10.3, pressure
Hold section；11, indent；12, deformation spacing；13, limiting slot；14, section is limited；15, left groove；16, right groove；17, chamber；18,
Air inlet pipe；19, deformation slot；20, installation passage.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
Referring to figs. 1 to Fig. 3, a kind of high leakproofness butterfly valve including valve body 1 and is set to the medium channel 2 of valve body 1, valve
The valve rod 3 worn into medium channel 2 is installed, the wall of medium channel 2 is equipped with the valve seat 4 of coaxial arrangement, and bolt passes through in body 1
Valve seat 4 is threadedly coupled the fixation being on 2 wall of medium channel for realizing valve seat 4 with valve body 1.It is located at medium channel 2 on valve rod 3
Position be fixedly installed butterfly plate 5, be equipped with pressing ring 6 back to the side of valve rod 3 on butterfly plate 5, bolt passes through pressing ring 6 and 5 spiral shell of butterfly plate
Line connects the fixation being on butterfly plate 5 for realizing pressing ring 6；Installation passage 20, installation passage are offered along its axial direction in valve rod 3
20 one end is in communication with the outside, the other end is connected to medium channel 2, is equipped in installation passage 20 and extends into medium channel 2
Air inlet pipe 18 passes through glue filling between 18 outer wall of installation passage wall and air inlet pipe and realizes fixing seal.
The installation annular groove 7 around 5 center of circle of butterfly plate is formed between butterfly plate 5 and pressing ring 6, installation annular groove 7 includes being set to
Pressing ring 6 towards butterfly plate 5 left groove body 7.1 and the right groove body 7.2 when being set to butterfly plate 5 towards pressing ring 6, left groove body
It is correspondingly arranged between 7.1 and right groove body 7.2；Left groove body 7.1 runs through periphery wall, the right groove body of pressing ring 6 close to the one side wall of valve seat 4
7.2 run through the periphery wall of butterfly plate 5 close to the one side wall of valve seat 4, are placed with a cooperation valve seat 4 in left groove body 7.1 and right groove body 7.2
Realize the sealing ring 8 of sealing.Sealing ring 8 back to valve seat 4 one side wall and left groove body 7.1 towards between the one side wall of valve seat 4, it is close
The one side wall and right groove body 7.2 of seal 8 back to valve seat 4 are each formed with deformation gap 9 towards between the side wall of valve seat 4.Left groove body
7.1 offer left groove 15 towards right groove body 7.2 on one side, and the position that sealing ring 8 corresponds to left groove 15 extends into left groove
In 15；Right groove body 7.2 offers right groove 16 towards left groove body 7.1 on one side, and the position that sealing ring 8 corresponds to right groove 16 is prolonged
Put in right groove 16, sealing ring 8 back to butterfly plate 6 one side and be located at installation annular groove 7 outside position offer around butterfly
The annular deformation slot 19 in 6 center of circle of plate can preferably drive sealing ring 8 towards 4 side of valve seat when fluid media impingement deformation slot 19
To movement, to realize better seal.
Left groove body 7.1 offers indent 11 towards valve seat 4 on one side, and indent 11 runs through pressing ring 6 close to the one side wall of butterfly plate 5
Towards the one side of butterfly plate 5, sealing ring 8 has been wholely set extension 10 back to valve seat 4 on one side, and extension 10 includes linkage section
10.1, it connects the joining section 10.2 of 10.1 one end of linkage section and connects the pressure holding section 10.3 of 10.2 one end of joining section；Linkage section
10.1, it is wholely set between joining section 10.2 and pressure holding 10.3 three of section, the radial parallel setting of linkage section 10.1 and butterfly plate 5,
Joining section 10.2 is vertically arranged with linkage section 10.1, presses section 10.3 extends into indent 11 and is vertically arranged with joining section 10.2.
Linkage section 10.1 is wholely set back to one end of joining section 10.2 and sealing ring 8 and one side wall and right groove body 7.2 close to butterfly plate 5
It offsets towards the one side wall of left groove body 7.1, joining section 10.2 is tangible towards being formed between the one side wall and sealing ring 8 of sealing ring 8
Become spacing 12, joining section 10.2 back to valve seat 4 one side wall with right groove body 7.2 offseting on one side towards valve seat 4, deformation spacing 12
Setting is connected to deformation gap 9.
One side of the butterfly plate 5 towards pressing ring 6 and the position corresponding to indent 11 offer limiting slot 13, limiting slot 13 and right slot
It is spaced setting between body 7.2, presses and is integrally formed with the limit section 14 for extending into limiting slot 13 in section 10.3, limit section 14 and pressure holding
Section 10.3 is vertically arranged；The annular compartment 17 around 5 center of circle of butterfly plate is offered inside sealing ring 8, air inlet pipe 18 is located at medium
One end inside channel 2 extends into 8 inside of sealing ring and connects with chamber 17 after passing through butterfly plate 5 back to the side of pressing ring 6 from butterfly plate 5
It is logical, between air inlet pipe 18 and sealing ring 8, is filled by glue between air inlet pipe 18 and butterfly plate 5 and realize fixing seal.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (7)
1. a kind of high leakproofness butterfly valve, including valve body (1) and it is set to the medium channel (2) of valve body (1), the valve body (1)
The valve rod (3) worn into medium channel (2) is inside installed, is installed with valve seat (4), the valve rod on medium channel (2) wall
(3) it is installed on butterfly plate (5), is installed with pressing ring (6) on the butterfly plate (5), is formed between the butterfly plate (5) and pressing ring (6)
Around the installation annular groove (7) in butterfly plate (5) center of circle, the sealing that sealing is realized in cooperation valve seat (4) is equipped in installation annular groove (7)
It encloses (8), it is characterised in that：Installation annular groove (7) towards be formed between the one side and sealing ring (8) of valve seat (4) for sealing
Enclose the deformation gap (9) that (8) carry out deformation, the sealing ring (8) towards deformation gap (9) one side and close to butterfly plate (5)
Position, which is extended with, to be worn between pressing ring (6) and butterfly plate (5) and the extension (10) that is pressed by the two.
2. a kind of high leakproofness butterfly valve according to claim 1, it is characterised in that：The installation annular groove (7) includes setting
In pressing ring (6) towards butterfly plate (5) left groove body (7.1) and right groove body when being set to butterfly plate (5) towards pressing ring (6)
(7.2), it is correspondingly arranged between the left groove body (7.1) and right groove body (7.2), the left groove body (7.1) is towards the one of valve seat (4)
Side wall offers indent (11), and one side wall of the indent (11) close to butterfly plate (5) is connected to setting, the extension with butterfly plate (5)
Portion (10) includes linkage section (10.1), the joining section (10.2) for connecting linkage section (10.1) one end and connection joining section (10.2)
One end of the pressure holding section (10.3) of one end, the linkage section (10.1) back to joining section (10.2) is wholely set with sealing ring (8)
And offset close to the one side wall of butterfly plate (5) and the one side wall of right groove body (7.2) towards left groove body (7.1), the pressure holding section
(10.3) indent (11) are extended into.
3. a kind of high leakproofness butterfly valve according to claim 2, it is characterised in that：The one side wall of the joining section (10.2)
It offsets towards the one side wall of sealing ring (8), another side wall and right groove body (7.2) towards valve seat (4), joining section (10.2) court
It is formed with deformation spacing (12) between the one side wall and sealing ring (8) of sealing ring (8), between the deformation spacing (12) and deformation
Gap (9) connection setting.
4. a kind of high leakproofness butterfly valve according to claim 2, it is characterised in that：The butterfly plate (5) is towards pressing ring (6)
Limiting slot (13) are equipped on one side and corresponding to the position of indent (11), are spaced between the limiting slot (13) and right groove body (7.2)
It is arranged, is integrally formed with the limit section (14) for extending into limiting slot (13) on pressure holding section (10.3).
5. a kind of high leakproofness butterfly valve according to claim 2, it is characterised in that：The left groove body (7.1) is towards right slot
The one side of body (7.2) is equipped with left groove (15), and the position that the sealing ring (8) corresponds to left groove (15) extends into left groove
(15) in；The right groove body (7.2) towards left groove body (7.1) one side be equipped with right groove (16), the sealing ring (8) with connect
The position that section (10.1) corresponds to right groove (16) extends into right groove (16).
6. a kind of high leakproofness butterfly valve according to claim 1, it is characterised in that：It is offered inside the sealing ring (8)
Around the annular compartment (17) in butterfly plate (5) center of circle.
7. a kind of high leakproofness butterfly valve according to claim 6, it is characterised in that：Be equipped with inside the valve rod (3) into
One end of tracheae (18), the air inlet pipe (18) is pierced by rear and is connected to chamber (17) fixation from the side wall of valve rod (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811018515.9A CN108869764B (en) | 2018-09-03 | 2018-09-03 | High leakproofness butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811018515.9A CN108869764B (en) | 2018-09-03 | 2018-09-03 | High leakproofness butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108869764A true CN108869764A (en) | 2018-11-23 |
| CN108869764B CN108869764B (en) | 2023-08-29 |
Family
ID=64323082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811018515.9A Active CN108869764B (en) | 2018-09-03 | 2018-09-03 | High leakproofness butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108869764B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927964A (en) * | 2020-07-15 | 2020-11-13 | 天津市塘沽第一阀门有限公司 | Two-way self sealss device of two eccentric butterfly valve dish boards |
| CN113154058A (en) * | 2021-03-26 | 2021-07-23 | 浙江理工大学 | Automatic butterfly valve of locking |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331319A (en) * | 1980-03-06 | 1982-05-25 | Jamesbury Corp. | Butterfly valve |
| CN203670828U (en) * | 2013-11-18 | 2014-06-25 | 杭州俊雄机械制造有限公司 | Inflation type butterfly valve |
| US20140239214A1 (en) * | 2013-02-26 | 2014-08-28 | Severn Glocon Limited | Butterfly Valve |
| CN105221772A (en) * | 2014-07-03 | 2016-01-06 | 金流阀门（上海）有限公司 | A kind of pneumatic expansion sealed type knife gate valve |
| CN106870747A (en) * | 2017-03-29 | 2017-06-20 | 潘健 | Replaceable sealed butterfly valve |
| CN107355547A (en) * | 2017-08-08 | 2017-11-17 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
| CN208858951U (en) * | 2018-09-03 | 2019-05-14 | 唐工阀门集团有限公司 | A kind of high leakproofness butterfly valve |
-
2018
- 2018-09-03 CN CN201811018515.9A patent/CN108869764B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331319A (en) * | 1980-03-06 | 1982-05-25 | Jamesbury Corp. | Butterfly valve |
| US20140239214A1 (en) * | 2013-02-26 | 2014-08-28 | Severn Glocon Limited | Butterfly Valve |
| CN203670828U (en) * | 2013-11-18 | 2014-06-25 | 杭州俊雄机械制造有限公司 | Inflation type butterfly valve |
| CN105221772A (en) * | 2014-07-03 | 2016-01-06 | 金流阀门（上海）有限公司 | A kind of pneumatic expansion sealed type knife gate valve |
| CN106870747A (en) * | 2017-03-29 | 2017-06-20 | 潘健 | Replaceable sealed butterfly valve |
| CN107355547A (en) * | 2017-08-08 | 2017-11-17 | 英诺威阀业有限公司 | It is a kind of from pressurising bidirectional sealed butterfly valve |
| CN208858951U (en) * | 2018-09-03 | 2019-05-14 | 唐工阀门集团有限公司 | A kind of high leakproofness butterfly valve |
Non-Patent Citations (1)
| Title |
|---|
| 王春莲, 孙建国: "双偏心式蝶阀密封效果好", 设备管理与维修, no. 06 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927964A (en) * | 2020-07-15 | 2020-11-13 | 天津市塘沽第一阀门有限公司 | Two-way self sealss device of two eccentric butterfly valve dish boards |
| CN113154058A (en) * | 2021-03-26 | 2021-07-23 | 浙江理工大学 | Automatic butterfly valve of locking |
| CN113154058B (en) * | 2021-03-26 | 2023-03-21 | 浙江理工大学 | Automatic butterfly valve of locking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108869764B (en) | 2023-08-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103438228A (en) | Self-sealing center line-type butterfly valve | |
| CN108869764A (en) | A kind of high leakproofness butterfly valve | |
| CN102207204A (en) | High-performance eccentric ball valve | |
| CN208858951U (en) | A kind of high leakproofness butterfly valve | |
| CN202118294U (en) | High-pressure hard seal ball valve | |
| CN102644760A (en) | Sealing structure of ultrahigh-pressure needle valve | |
| CN107477193B (en) | A kind of spherical valve seat butterfly valve | |
| CN214838417U (en) | Stop valve | |
| CN211423434U (en) | Cylindrical full-bore three-eccentric high-pressure wear-resistant ball valve | |
| CN208204279U (en) | Low abrasion whirl compensator | |
| CN207989766U (en) | Keep the temperature Y shape shut-off valve | |
| CN209385700U (en) | A kind of high-performance two-way hard seal spiral valve | |
| CN207437850U (en) | Double-disc type metal sealing check valve | |
| CN108386634A (en) | Low abrasion whirl compensator | |
| CN108757984A (en) | From pressure seal ball valve | |
| CN208431388U (en) | A kind of butterfly valve | |
| CN218207848U (en) | Butterfly valve sealing structure | |
| CN205978597U (en) | Dedicated V type ceramic ball valve of desulfurization | |
| CN213361127U (en) | Butterfly valve with high sealing performance | |
| CN214662117U (en) | Rubber valve seat with double sealing effect | |
| CN219827771U (en) | Leak-proof sealing valve | |
| CN203115129U (en) | Triple eccentric metallic seal butterfly valve | |
| US20110024660A1 (en) | Angle-seating butterfly vane and method for producing the same | |
| CN104235392A (en) | Elastic self-sealing butterfly valve | |
| CN220268463U (en) | Rubber lining soft sealing structure of butterfly valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |