CN106051178A - High-performance butterfly valve capable of ensuring double seal - Google Patents
High-performance butterfly valve capable of ensuring double seal Download PDFInfo
- Publication number
- CN106051178A CN106051178A CN201610517401.3A CN201610517401A CN106051178A CN 106051178 A CN106051178 A CN 106051178A CN 201610517401 A CN201610517401 A CN 201610517401A CN 106051178 A CN106051178 A CN 106051178A
- Authority
- CN
- China
- Prior art keywords
- valve shaft
- butterfly plate
- butterfly
- sealing ring
- pressing plate
- 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.)
- Pending
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
- F16K1/224—Details of bearings for the axis of rotation
-
- 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
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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
-
- 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
- F16K1/48—Attaching valve members to screw-spindles
- F16K1/487—Attaching valve members to screw-spindles by a fixing element extending in the axial direction of the spindle, e.g. a screw
Abstract
The invention discloses a high-performance butterfly valve capable of ensuring double seal. The butterfly valve comprises a valve body, a butterfly plate and a valve shaft; the valve shaft is divided into an upper valve shaft and a lower valve shaft, and the butterfly valve further comprises a composite bearing and an adjusting pressing plate; a first sealing ring is arranged at the positions, close to the sealing face of the valve body, of the two sides of the butterfly plate, an adjusting screw hole is formed in the adjusting pressing plate, an adjusting screw is arranged on the adjusting pressing plate, a second sealing ring is arranged at the position, close to a nut of the adjusting screw, of the adjusting screw hole, and a third sealing ring located between the adjusting pressing plate and the butterfly plate is arranged at the end, close to the adjusting pressing plate and away from the first sealing ring, of the surface of the butterfly plate; and the composite bearing is adopted to support the valve shaft, the butterfly plate and the valve shaft are connected through a flat key for transmission, the transmission torque is large, detaching and overhauling are convenient, the first sealing ring makes contact with the wide valve body sealing face, when the butterfly plate is opened and closed, torque of the valve is effectively reduced, meanwhile the service life of the valve is prolonged, the adjusting pressing plate can achieve reverse seal of the valve, and the phenomenon that when the butterfly plate is closed, seal of the butterfly plate fails under medium pressure is avoided.
Description
Technical field
The present invention relates to a kind of butterfly valve, especially ensure the high-performance butterfly valve of double containment.
Background technology
Butterfly valve is as the control element being connected with pipe-line equipment, and in the keying operating process of valve, client wishes
Reduce the open and close torque of valve as far as possible.Using taper bolt to be connected transmission at present between butterfly plate and the valve shaft of butterfly valve, taper bolt runs through
Valve shaft, need to strengthen valve shaft diameter to increase valve shaft intensity, and production cost so can be caused to improve and the increase of moment of torsion, and circular cone
Pin is closely cooperating of taper, and when valve shaft and butterfly plate, to need dismounting to pull down taper bolt when separating the most extremely difficult.Client couple at present
Being desirable that it is two way seal in butterfly valve, the butterfly valve of traditional structure can only realize one-way sealing, and one-way sealing to realize two-way close
Envelope, can only increase the diameter of valve shaft, strengthen the intensity of butterfly plate.Although and some butterfly valves can realize two way seal, but structure is complicated,
Part is more, adds production difficulty and production cost.
Summary of the invention
Present invention aim to address that increasing valve shaft diameter can cause moment of torsion to increase and existing bidirectional sealed butterfly valve structure is multiple
The problem that miscellaneous, production cost is high.
The technical solution used in the present invention is: ensure the high-performance butterfly valve of double containment, including valve body, butterfly plate and valve shaft, valve
Axle is divided into valve shaft and lower valve shaft, and it also includes composite bearing, regulation pressing plate, and it is close that described composite bearing is respectively arranged at valve body
At upper valve shaft and valve body is at lower valve shaft, described upper valve shaft and lower valve shaft are respectively with the composite bearing activity near them even
Connecing, described butterfly plate both sides are provided with the first sealing ring at valve body sealing surface, and described regulation pressing plate has two, lays respectively at butterfly
Plate both sides, described regulation pressing plate is provided with regulation screw hole, regulation pressing plate is provided through regulation screw hole with butterfly plate even
The regulation screw connect, described regulation screw hole is provided with the second sealing ring at the nut of regulation screw, and original state is lowered
Joint pressing plate can contact and regulate under original state pressing plate with the first sealing ring and the second sealing ring surface to be had with butterfly plate surface
One determining deviation, butterfly plate surface be provided with away from the end of the first sealing ring near regulation pressing plate be positioned at regulation pressing plate and butterfly plate it
Between the 3rd sealing ring, the first sealing ring and the 3rd sealing ring have certain elasticity, when regulate pressing plate be under pressure time regulation pressure
Plate can contact with butterfly plate surface, stretches out to valve body sealing surface direction elasticity thus tight when regulation pressing plate contacts with butterfly plate surface
Coordinate with valve body sealing surface and regulate between pressing plate and butterfly plate by the first sealing ring, the second sealing ring and the 3rd sealing ring close
Envelope, butterfly plate central authorities are provided with positioning spigot, are positioned on the butterfly plate at upper valve shaft and lower valve shaft of the positioning spigot both sides and set respectively
There are the upper valve shaft of closure and the end cap of lower valve shaft one end, the side of the butterfly plate relative with being provided with end cover side be provided with attachment screw,
The radial direction of described upper valve shaft and lower valve shaft offers keyway, and the butterfly plate of the radial direction side being positioned at valve shaft and lower valve shaft is provided with
Lock-screw, one end of described lock-screw penetrate butterfly plate be located close at valve shaft or lower valve shaft and connect in its end have flat
Key, described flat key is arranged in keyway.
As a further improvement on the present invention, described butterfly plate is provided with trim ring and the first pad, institute at attachment screw
Stating the side of the first pad to contact opposite side with butterfly plate and contact with trim ring, described trim ring contacts with the nut of attachment screw, institute
State butterfly plate at end cap, be provided with the second pad that two opposite sides contact with end cap and butterfly plate respectively.
The invention has the beneficial effects as follows: using composite bearing to support valve shaft, butterfly plate uses flat key to be connected transmission with valve shaft, passes
Torque delivery is big and readily accessible maintenance, and the first sealing ring contacts with wider valve body sealing surface, and butterfly plate can effectively reduce when opening and closing
The moment of torsion of valve, extends valve service life simultaneously, and regulation pressing plate is capable of reversely the sealing of valve, when preventing butterfly plate from closing
Lost efficacy at pressure medium lower seal.
Accompanying drawing explanation
Fig. 1 is present configuration schematic diagram.
Fig. 2 is that the present invention the first sealing ring coordinates schematic diagram with wider valve body sealing surface.
Fig. 3 is the schematic diagram being connected transmission between butterfly plate with valve shaft.
Fig. 4 realizes valve for regulation pressing plate and reversely seals schematic diagram.
Shown in figure: 1 composite bearing, valve shaft on 2,3 valve bodies, 4 valve body sealing surfaces, 5 first sealing rings, 6 regulation pressing plates, 7
Butterfly plate, 8 flat keys, 9 lower valve shafts, 10 trim rings, 11 first pads, 12 second pads, 13 end caps, 14 lock-screws, 15 second seal
Circle, 16 the 3rd sealing rings, 17 regulation screws.
Detailed description of the invention
Below in conjunction with the accompanying drawings, the present invention is described further.
Embodiment: ensureing the high-performance butterfly valve of double containment, including valve body 3, butterfly plate 7 and valve shaft, valve shaft is divided into valve shaft 2 He
Lower valve shaft 9, it also include composite bearing 1, regulation pressing plate 6, described composite bearing be respectively arranged at valve body at upper valve shaft and
Valve body is at lower valve shaft, and described upper valve shaft and lower valve shaft are flexibly connected with the composite bearing near them respectively, described butterfly plate
Both sides are provided with the first sealing ring 5 at valve body sealing surface, and described regulation pressing plate has two, lays respectively at butterfly plate both sides, institute
State and on regulation pressing plate, be provided with regulation screw hole, regulation pressing plate is provided through the regulation spiral shell that regulation screw hole is connected with butterfly plate
Nail 17, described regulation screw hole is provided with the second sealing ring 15 at the nut of regulation screw, regulates pressing plate under original state
Can contact with the first sealing ring and the second sealing ring surface and regulate under original state pressing plate and butterfly plate surface have certain between
The be provided with between regulation pressing plate and butterfly plate away from the end of the first sealing ring near regulation pressing plate away from, butterfly plate surface
Three sealing rings 16, the first sealing ring and the 3rd sealing ring have certain elasticity, regulate pressing plate energy when regulating pressing plate and being under pressure
Enough contact with butterfly plate surface, stretch out to valve body sealing surface direction elasticity when regulation pressing plate contacts with butterfly plate surface thus close and
Valve body sealing surface 4 coordinates and regulates by the first sealing ring, the second sealing ring and the sealing of the 3rd sealing ring between pressing plate and butterfly plate,
Butterfly plate central authorities are provided with positioning spigot, are positioned on the butterfly plate at upper valve shaft and lower valve shaft of the positioning spigot both sides and are respectively equipped with envelope
Block the end cap 13 of valve shaft and lower valve shaft one end, the side of the butterfly plate relative with being provided with end cover side is provided with attachment screw, institute
The radial direction stating valve shaft and lower valve shaft offers keyway, and the butterfly plate of the radial direction side being positioned at valve shaft and lower valve shaft is provided with lock
Tight screw 14, one end of described lock-screw penetrate butterfly plate be located close at valve shaft or lower valve shaft and in its end connect have flat
Key 8, described flat key is arranged in keyway.Described butterfly plate is provided with trim ring 10 and the first pad 11 at attachment screw, described
The side of the first pad contacts opposite side with butterfly plate and contacts with trim ring, and described trim ring contacts with the nut of attachment screw, described
Butterfly plate is provided with the second pad 12 that two opposite sides contact with end cap and butterfly plate respectively at end cap.
In the present invention, valve body sealing surface 4 is wider, and there is rounding on valve body sealing surface both sides, the first sealing ring 5 side and valve
Body sealing surface 4 coordinates, opposite side is conditioned pressing plate 6 and butterfly plate 7 surrounds, matching part is preferably circular arc, and (such first seals
It is easier to coordinate with valve body sealing surface during circle pressurized).Use flat key 8 to be connected between upper valve shaft 2 and butterfly plate 7, transmit moment of torsion greatly, if
Put holding screw 14 and make transmission more steadily (being preferably provided two holding screws), and be easy to tearing open between upper valve shaft 2 and butterfly plate 7
Unloading, the connection between lower valve shaft 9 and butterfly plate 7 is also such.In the present invention, at described regulation screw hole near the spiral shell regulating screw
Being provided with the second sealing ring 15 at cap, butterfly plate surface is provided with away from the end of the first sealing ring near regulation pressing plate and is positioned at tune
The 3rd sealing ring 16(between joint pressing plate and butterfly plate i.e. regulates pressing plate 6 and arranges the 3rd sealing ring at the Internal hole positioning of butterfly plate 7
16), the first sealing ring, the second sealing ring and the 3rd sealing ring preferably both have certain elasticity, the material that such as seals is rubber,
Second sealing ring and the 3rd sealing ring are preferably with O-ring seals, and after stress, the first sealing ring, the second sealing ring and the 3rd seal
Circle can crimp, due to the first sealing ring 5 be conditioned pressing plate 6 respectively, butterfly plate 7 surrounds, therefore the first sealing ring 5 can only be to valve
The extruding of body sealing surface 4 direction and valve seal, the second sealing ring and the 3rd sealing ring prevent valve shaft 2 and butterfly plate 7 after being squeezed
Contact surface has medium to enter to produce corrosion, valve shaft and one end of lower valve shaft in end cap seal, prevents medium from entering.
When the present invention uses, butterfly plate 7 in opening-closing process rotational trajectory as shown in phantom in Figure 2, in opening-closing process first
Sealing ring 5 is smooth entrance or disengages valve body sealing surface 4, and there is not jam during opening-closing process, the coefficient of sliding friction is relatively
Low, can effectively reduce valve opening and closing moment of torsion, simultaneously prolongation sealing ring service life.After butterfly plate is closed, if regulation pressing plate 6 is subject to
To pressure, the second sealing ring and the 3rd sealing ring be squeezed after sealing against leakage, act on regulation pressing plate 6 on power pass to
First sealing ring 5, the first sealing ring 5 to the extruding of valve body sealing surface 4 direction thus add sealing ring 5 and valve body sealing surface 4 it
Between sealed increscence amount, it is ensured that reversely sealing, pressure more high sealing effect is the best.
In addition the present invention can go out to arrange trim ring 10 and the first pad 11 near attachment screw, arranges the at close end cap 13
Two pads 12 so that flat key two ends trim ring 10 combine with the first pad 11 and end cap 13 and the second pad 12 to form combination close
Envelope, sealing property are more preferable.
Those skilled in the art are it is to be understood that the protection scheme of the present invention is not limited only to the above embodiments, it is also possible to
Various permutation and combination and conversion is carried out, on the premise of spirit of the present invention, to the present invention on the basis of above-described embodiment
The various conversion carried out all fall within protection scope of the present invention.
Claims (2)
1. ensureing the high-performance butterfly valve of double containment, including valve body, butterfly plate and valve shaft, valve shaft is divided into valve shaft and lower valve shaft, and it is special
Levying and be that it also includes composite bearing, regulation pressing plate, described composite bearing is respectively arranged at valve body at upper valve shaft and valve body
At lower valve shaft, described upper valve shaft and lower valve shaft are flexibly connected with the composite bearing near them respectively, described butterfly plate both sides
Being provided with the first sealing ring at valve body sealing surface, described regulation pressing plate has two, lays respectively at butterfly plate both sides, described regulation
It is provided with regulation screw hole on pressing plate, regulation pressing plate is provided through the regulation screw that regulation screw hole is connected with butterfly plate, institute
Stating regulation screw hole and be provided with the second sealing ring at the nut of regulation screw, regulating pressing plate under original state can be with first
Sealing ring and the second sealing ring surface contact and regulate under original state pressing plate and have at regular intervals, butterfly plate surface with butterfly plate surface
It is provided with the 3rd sealing ring between regulation pressing plate and butterfly plate near regulating the pressing plate end away from the first sealing ring, the
One sealing ring and the 3rd sealing ring have certain elasticity, when regulating pressing plate and being under pressure, regulation pressing plate can connect with butterfly plate surface
Touch, stretch out to valve body sealing surface direction elasticity when regulation pressing plate contacts with butterfly plate surface thus coordinate with valve body sealing surface closely
And sealed by the first sealing ring, the second sealing ring and the 3rd sealing ring between regulation pressing plate and butterfly plate, butterfly plate central authorities are provided with
Positioning spigot, is positioned on the butterfly plate at upper valve shaft and lower valve shaft of the positioning spigot both sides and is respectively equipped with the upper valve shaft of closure and lower valve
The end cap of axle one end, is provided with attachment screw, described upper valve shaft and lower valve shaft in the side of the butterfly plate relative with being provided with end cover side
Radial direction offer keyway, the butterfly plate of the radial direction side being positioned at valve shaft and lower valve shaft is provided with lock-screw, described locking
One end of screw penetrates butterfly plate and is located close at valve shaft or lower valve shaft and in its end connect have flat key, described flat key to be arranged on
In keyway.
The high-performance butterfly valve of guarantee double containment the most according to claim 1, it is characterised in that described butterfly plate is near connecting spiral shell
Being provided with trim ring and the first pad at nail, the side of described first pad contacts opposite side with butterfly plate and contacts with trim ring, described
Trim ring contacts with the nut of attachment screw, and described butterfly plate is provided with two opposite sides at end cap and contacts with end cap and butterfly plate respectively
The second pad.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610517401.3A CN106051178A (en) | 2016-07-05 | 2016-07-05 | High-performance butterfly valve capable of ensuring double seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610517401.3A CN106051178A (en) | 2016-07-05 | 2016-07-05 | High-performance butterfly valve capable of ensuring double seal |
Publications (1)
Publication Number | Publication Date |
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CN106051178A true CN106051178A (en) | 2016-10-26 |
Family
ID=57200847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201610517401.3A Pending CN106051178A (en) | 2016-07-05 | 2016-07-05 | High-performance butterfly valve capable of ensuring double seal |
Country Status (1)
Country | Link |
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CN (1) | CN106051178A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106949249A (en) * | 2017-04-13 | 2017-07-14 | 航天长征化学工程股份有限公司 | Three-eccentric butterfly valve sealing ring and three-eccentric 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 |
CN110388472A (en) * | 2019-07-08 | 2019-10-29 | 英诺威阀业有限公司 | Flexible butterfly valve |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201314383Y (en) * | 2008-11-18 | 2009-09-23 | 张维春 | High temperature and corrosion resistant butterfly valve |
CN102853093A (en) * | 2011-06-30 | 2013-01-02 | 江苏神通阀门股份有限公司 | Double-acting type isolating valve |
US20130056667A1 (en) * | 2011-09-01 | 2013-03-07 | Jianchao Shu | Triple Offset Butterfly Valve and Rotary Valves For Sever Services |
CN104653791A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Splitting type valve seat self-adjustable sealing three-eccentric butterfly valve |
CN205780930U (en) * | 2016-07-05 | 2016-12-07 | 英诺威阀业有限公司 | Ensure the high-performance butterfly valve of double containment |
-
2016
- 2016-07-05 CN CN201610517401.3A patent/CN106051178A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201314383Y (en) * | 2008-11-18 | 2009-09-23 | 张维春 | High temperature and corrosion resistant butterfly valve |
CN102853093A (en) * | 2011-06-30 | 2013-01-02 | 江苏神通阀门股份有限公司 | Double-acting type isolating valve |
US20130056667A1 (en) * | 2011-09-01 | 2013-03-07 | Jianchao Shu | Triple Offset Butterfly Valve and Rotary Valves For Sever Services |
CN104653791A (en) * | 2015-02-10 | 2015-05-27 | 无锡智能自控工程股份有限公司 | Splitting type valve seat self-adjustable sealing three-eccentric butterfly valve |
CN205780930U (en) * | 2016-07-05 | 2016-12-07 | 英诺威阀业有限公司 | Ensure the high-performance butterfly valve of double containment |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106949249A (en) * | 2017-04-13 | 2017-07-14 | 航天长征化学工程股份有限公司 | Three-eccentric butterfly valve sealing ring and three-eccentric 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 |
CN110388472A (en) * | 2019-07-08 | 2019-10-29 | 英诺威阀业有限公司 | Flexible butterfly valve |
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C06 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
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RJ01 | Rejection of invention patent application after publication | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161026 |