CN109268518A - A kind of gate valve with emergency opening function - Google Patents
A kind of gate valve with emergency opening function Download PDFInfo
- Publication number
- CN109268518A CN109268518A CN201811322621.6A CN201811322621A CN109268518A CN 109268518 A CN109268518 A CN 109268518A CN 201811322621 A CN201811322621 A CN 201811322621A CN 109268518 A CN109268518 A CN 109268518A
- Authority
- CN
- China
- Prior art keywords
- valve plate
- main valve
- thread column
- emergency opening
- auxiliary
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
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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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/506—Mechanical actuating means with screw-spindle or internally threaded actuating means with plural sets of thread, e.g. with different pitch
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The present invention relates to gate valve technical fields, especially a kind of gate valve with emergency opening function, including valve body, valve deck is equipped with above first connection ring, running through at the top of the valve deck has the first screw thread column casing, the first screw thread column casing is arranged right below cambered surface link block, cambered surface link block bottom is fixedly connected with main valve plate, thick blind hole is equipped in the middle part of the main valve plate one side, it sets there are four thin blind hole along main valve plate side is circumferentially equidistant, the main valve plate other side is equipped with auxiliary valve plate, leakproof rubber pad is fixed on the side of the auxiliary valve plate, auxiliary valve plate side Middle face is fixedly connected with coarse-pitch thread column, running through in four thin blind holes has fine thread column, the main valve plate and auxiliary valve plate bottom surface are equipped with emergency opening mechanism.The present invention has the function of emergency opening, can guarantee that valve body is normally-open when threaded stem is broken, and in addition can also guarantee leakproofness when valve body closure by adjusting the spacing between main valve plate and auxiliary valve plate.
Description
Technical field
The present invention relates to gate valve technical field more particularly to a kind of gate valves with emergency opening function.
Background technique
The opening and closing element of gate valve is flashboard, and the direction of motion and flow direction of flashboard are perpendicular, and gate valve can only make standard-sized sheet and complete
It closes, cannot make adjustments and throttle.Most of gate valve is using forced seal, i.e., when valve is closed, by force will by external force
Flashboard presses to valve seat, and to guarantee the leakproofness of sealing surface, the flashboard of gate valve is for linear motion with valve rod, is lifting lever brake
Valve is also Outside screw stem rising through handwheel type gate valve, usually there is trapezoidal thread on elevating lever, by the guide groove on the nut and valve body of valve tip,
Rotary motion is become moving along a straight line, that is, becomes operation torque to operate thrust.
Outside screw stem rising through handwheel type gate valve is widely used in life, and general Outside screw stem rising through handwheel type gate valve is in order to guarantee that leakproofness all can be in flashboard table
Face is bonded with leakproof leather packing layer, is causing to leak because of abrasion when used for a long time, and the gate valve in addition used in some systems is logical
It is often in normally opened or normally off, it, may be due to for a long time not when the gate valve that one is chronically at closed state needs to open
It " is blocked " using and there is a situation where flashboard by valve seat, if firmly opening by force, valve rod can be broken.Gate valve rod fracture is general
Occur in valve rod and spool interconnecting piece, sectional area is smaller herein, stress concentration and over-standard phenomenon easily occurs.Especially work as operating condition
Valve rod is easily broken off when significantly deviateing design parameter.Be difficult to processing or it is unforeseen be that pipeline valve spool falls off and causes
Pipeline blockage problem once process pipelines can not cut off valve, can not replace, will certainly directly threaten in this case
It is very harmful to the progress normally produced.
Summary of the invention
The purpose of the present invention is to solve exist in the prior art gate valve be used for a long time after generate leakproof leather packing abrasion and
The shortcomings that valve rod easy fracture, and a kind of gate valve with emergency opening function proposed.
To achieve the goals above, present invention employs following technical solutions:
A kind of gate valve with emergency opening function, including valve body are designed, is fixed with the first connection ring at the top of the side of valve body,
Be equipped with valve deck above first connection ring, the valve deck side bottom is fixed with the second connection ring, first connection ring and
Second connection ring two sides, which are run through, the bolt being slidably connected with it, is threaded on each bolt and connects positioned at first
The nut of ring bottom is connect, running through at the top of the valve deck has the first screw thread column casing being firmly connected with it, the first screw thread column casing
It is arranged right below cambered surface link block, the cambered surface link block inside middle portion is equipped with the first cylindrical cavity, first cylindrical cavity
It is inside installed with the first rotation plectane being rotatablely connected with it, first rotation is fixed in the middle part of plectane top surface through the first cylindricality
Cavity and the threaded stem being threadedly coupled with the first screw thread column casing, cambered surface link block bottom are fixedly connected with main valve plate, institute
It states and is equipped with thick blind hole in the middle part of main valve plate one side, set that there are four thin blind hole, the main valve plate other sides along main valve plate side is circumferentially equidistant
Equipped with auxiliary valve plate, the auxiliary valve plate is far from being fixed with leakproof rubber pad, the auxiliary not set leakproof rubber of valve plate on the side of main valve plate
Be fixedly connected with through main valve plate in the middle part of the side of Rubber washer and protrude into the coarse-pitch thread column in thick blind hole, the thick blind hole bottom surface and
Be equipped with the first stop nut connecting with coarse-pitch thread male screw on main valve plate side, in four thin blind holes through have with
It is slidably connected and bottom end is fixed on fine thread column on auxiliary valve plate side, is threaded with two on each fine thread column
A the second stop nut being located on thin blind via bottom and main valve plate side, the main valve plate and auxiliary valve plate bottom surface are equipped with and answer
Anxious opener.
Preferably, the emergency opening mechanism includes the first arc-shaped slot, be installed with inside first arc-shaped slot with
The arc fixture block that its shape matches, the arc fixture block surface middle part are equipped with inside and are installed with the second of main valve plate and auxiliary valve plate
Arc-shaped slot, the second arc-shaped slot on both sides of the middle are equipped with the second cylindrical cavity, and each second cylindrical cavity blocks
Equipped with the second rotation plectane, it is fixedly connected at the top of each second rotation plectane through the second cylindrical cavity top and valve
The long threaded rod of body sidewall, the every long threaded rod side top is threaded with to be consolidated with through valve body and with body wall
Surely the second screw thread column casing connected.
Preferably, as the main valve plate with auxiliary valve plate is circular slab and surface area.
Preferably, first connection ring is as the second connection ring size.
Preferably, handwheel is fixed at the top of the threaded stem.
Preferably, two long threaded rods are vertically arranged and parallel to each other.
Preferably, two sides are respectively and fixedly provided with rotating bar at the top of each long threaded rod.
A kind of gate valve with emergency opening function proposed by the present invention, beneficial effect are:
1, by the way that main valve plate is arranged in valve body, a thick blind hole and four thin blind holes are set on main valve plate, then by thick blind
The fine thread column on coarse-pitch thread column and thin blind hole on hole fixes main valve plate and auxiliary valve plate, and such setting passes through the thick spiral shell that comes loose
Between the second stop nut on the first stop nut and fine thread column of line column can be adjusted between main valve plate and auxiliary valve plate
Away from, thus even if the leakproof rubber pad on auxiliary valve plate surface because rub it is thinning also by adjusting between main valve plate and auxiliary valve plate between
Away from and achieve the purpose that anti-leak, also sufficiently leakproof rubber pad can be utilized, avoided waste；
2, by the way that in body base setting emergency opening mechanism, normal use, the long threaded rod in emergency opening mechanism can be incited somebody to action
Arc fixture block is fixed in the first arc-shaped slot, and when threaded stem is broken, we can be by rotating two root long spiral shells simultaneously
Arc fixture block is moved upwards with main valve plate and auxiliary valve plate when rasp bar, to guarantee the intracorporal fluid proper flow of valve.
Detailed description of the invention
Fig. 1 is a kind of cross-sectional view of the gate valve with emergency opening function proposed by the present invention；
Fig. 2 is the enlarged drawing in figure at A；
Fig. 3 is the side view of main valve plate in a kind of gate valve with emergency opening function proposed by the present invention；
Fig. 4 is the structural schematic diagram of arc fixture block in a kind of gate valve with emergency opening function proposed by the present invention.
In figure: valve body 1, the first connection ring 2, valve deck 3, the second connection ring 4, bolt 5, nut 6, the first screw thread column casing 7, arc
Face link block 8, the first cylindrical cavity 9, first rotation plectane 10, threaded stem 11, main valve plate 12, thick blind hole 13, thin blind hole 14,
Auxiliary valve plate 15, leakproof rubber pad 16, coarse-pitch thread column 17, the first stop nut 18, fine thread column 19, the second stop nut 20,
First arc-shaped slot 21, arc fixture block 22, the second arc-shaped slot 23, the second cylindrical cavity 24, second rotate plectane 25, long screw thread
Bar 26, the second screw thread column casing 27, rotating bar 28, handwheel 29.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-4, a kind of gate valve with emergency opening function, a kind of gate valve with emergency opening function, including
Valve body 1,1 side top of valve body are fixed with the first connection ring 2, valve deck 3 are equipped with above the first connection ring 2, and 3 side bottom of valve deck is solid
Surely there is the second connection ring 4, the first connection ring 2 is as 4 size of the second connection ring, 4 two sides of the first connection ring 2 and the second connection ring
Through there is the bolt 5 being slidably connected with it, the nut positioned at 2 bottom of the first connection ring is threaded on each bolt 5
6, through there is the first screw thread column casing 7 being firmly connected with it at the top of valve deck 3, the first screw thread column casing 7 is arranged right below cambered surface connection
Block 8,8 inside middle portion of cambered surface link block be equipped with the first cylindrical cavity 9, is installed in the first cylindrical cavity 9 and is rotatablely connected with it
First rotation plectane 10, first rotation 10 top surface of plectane in the middle part of be fixed with through the first cylindrical cavity 9 and with the first screw thread column casing 7
The threaded stem 11 of threaded connection is fixed with handwheel 29 at the top of threaded stem 11, and 8 bottom of cambered surface link block is fixedly connected with main valve
Plate 12 is equipped with thick blind hole 13 in the middle part of main valve plate 12 one side, sets there are four thin blind hole 14 along 12 side of main valve plate is circumferentially equidistant, main
12 other side of valve plate is equipped with auxiliary valve plate 15, and main valve plate 12 is as circular slab and surface area with auxiliary valve plate 15, and auxiliary valve plate 15 is remote
Leakproof rubber pad 16, the side middle part of the not set leakproof rubber pad 16 of auxiliary valve plate 15 are fixed on side from main valve plate 12
It is fixedly connected with through main valve plate 12 and protrudes into the coarse-pitch thread column 17 in thick blind hole 13, thick 13 bottom surface of blind hole and 12 side of main valve plate
On be equipped with the first stop nut 18 being threadedly coupled with coarse-pitch thread column 17, through having and its company of sliding in four thin blind hole 14
It connects and bottom end is fixed on fine thread column 19 on auxiliary 15 side of valve plate, be threadedly coupled that there are two respectively on each fine thread column 19
The second stop nut 20 on thin 14 bottom of blind hole and 12 side of main valve plate.When opening to the gate valve, handwheel is rotated
29, the rotation of handwheel 29 drives threaded stem 11 to rotate, and revolves threaded stem 11 from the first screw thread column casing 7 being threadedly coupled with it
Out, to pull main valve plate 12 to move upwards into valve deck 3 by the first rotation plectane 10 in the first cylindrical cavity 9, make
Valve body 1 is in the open state, otherwise similarly can valve body 1, in 12 side of main valve plate, one thick blind hole 13 and four are set
Thin blind hole 14, then setting runs through the coarse-pitch thread column 17 being fixedly connected inside it and with auxiliary valve plate 15 in thick blind hole 13, at four
It is respectively provided with fine thread column 19 that is internal and being fixedly connected with auxiliary valve plate 15 through it in thin blind hole 14, passes through the coarse-pitch thread column 17 that comes loose
On two the first stop nuts 18 and each fine thread column 19 on two the second stop nuts 20, can be to main valve plate 12 and auxiliary
Spacing between valve plate 15 is adjusted, and so after the leakproof rubber pad 16 on auxiliary 15 surface of valve plate is worn, tunes up main valve plate
Spacing between 12 and auxiliary valve plate 15 can reassure the leakproofness of valve body 1, while extend the use longevity of leakproof rubber pad 16
Life, reduces the cost of maintenance.
Main valve plate 12 and 15 bottom surface of auxiliary valve plate are equipped with emergency opening mechanism, and emergency opening mechanism includes the first arc-shaped slot
21, the arc fixture block 22 to match with its shape is installed with inside the first arc-shaped slot 21, and 22 surface middle part of arc fixture block is equipped with
Inside is installed with the second arc-shaped slot 23 of main valve plate 12 and auxiliary valve plate 15, and 23 on both sides of the middle of the second arc-shaped slot is equipped with second
Cylindrical cavity 24, each second cylindrical cavity 24 are installed with the second rotation plectane 25, and each second rotation plectane, 25 top is
It is fixedly connected with the long threaded rod 26 through 24 top and 1 side wall of valve body of the second cylindrical cavity, two root long threaded rods 26 are vertical
It is arranged and parallel to each other, each long 26 top two sides of threaded rod are respectively and fixedly provided with rotating bar 28, every 26 side top of root long threaded rod
The the second screw thread column casing 27 for being threaded with and running through valve body 1 and being fixedly connected with 1 side wall of valve body.It is produced when in threaded stem 11
When raw fracture, by rotating the rotating bar 28 on two root long threaded rods 26 simultaneously, arc fixture block 22 can be made to move up disengaging the
One arc-shaped slot 21, and arc fixture block 22 is transported upwards by the second arc-shaped slot 23 picking-up main valve plate 12 and auxiliary valve plate 15 at this time
It is dynamic, to guarantee that the fluid in valve body 1 can be with proper flow.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of gate valve with emergency opening function, including valve body (1), it is characterised in that: valve body (1) side top is solid
Surely have the first connection ring (2), be equipped with valve deck (3) above first connection ring (2), valve deck (3) side bottom is fixed with
Second connection ring (4), first connection ring (2) and the second connection ring (4) two sides, which are run through, the bolt being slidably connected with it
(5), the nut (6) positioned at the first connection ring (2) bottom, valve deck (3) top are threaded on each bolt (5)
Through there is the first screw thread column casing (7) being firmly connected with it, the first screw thread column casing (7) is arranged right below cambered surface link block in portion
(8), cambered surface link block (8) inside middle portion is equipped with the first cylindrical cavity (9), is installed in first cylindrical cavity (9)
The first rotation plectane (10) being rotatablely connected with it, first rotation are fixed in the middle part of plectane (10) top surface through the first cylindricality
Cavity (9) and the threaded stem (11) being threadedly coupled with the first screw thread column casing (7), cambered surface link block (8) bottom is fixed to be connected
It is connected to main valve plate (12), is equipped with thick blind hole (13) in the middle part of main valve plate (12) one side, it is circumferential etc. along main valve plate (12) side
Away from setting there are four thin blind hole (14), main valve plate (12) other side is equipped with auxiliary valve plate (15), and the auxiliary valve plate (15) is far from main valve plate
(12) it is fixed on side leakproof rubber pad (16), in the middle part of the side of the auxiliary not set leakproof rubber pad (16) of valve plate (15)
Be fixedly connected with through main valve plate (12) and protrude into the coarse-pitch thread column (17) in thick blind hole (13), thick blind hole (13) bottom surface and
The first stop nut (18) being threadedly coupled with coarse-pitch thread column (17), four thin blind holes are equipped on main valve plate (12) side
(14) it is slidably connected with it and bottom end is fixed on fine thread column (19) on auxiliary valve plate (15) side through having in, it is each described
Second be located at there are two being threadedly coupled on fine thread column (19) on thin blind hole (14) bottom and main valve plate (12) side
Stop nut (20), the main valve plate (12) and auxiliary valve plate (15) bottom surface are equipped with emergency opening mechanism.
2. a kind of gate valve with emergency opening function according to claim 1, it is characterised in that: the emergency opening machine
Structure includes the first arc-shaped slot (21), is installed with the arc fixture block to match with its shape inside first arc-shaped slot (21)
(22), arc fixture block (22) surface middle part is equipped with the second arc card that inside is installed with main valve plate (12) and auxiliary valve plate (15)
Slot (23), the second arc-shaped slot (23) on both sides of the middle are equipped with the second cylindrical cavity (24), and each second cylindricality is empty
Chamber (24) is installed with the second rotation plectane (25), is fixedly connected at the top of each second rotation plectane (25) through the
At the top of two cylindrical cavities (24) and the long threaded rod (26) of valve body (1) side wall, every long threaded rod (26) side top are equal
The the second screw thread column casing (27) for being threaded with and running through valve body (1) and being fixedly connected with valve body (1) side wall.
3. a kind of gate valve with emergency opening function according to claim 1, it is characterised in that: the main valve plate (12)
It is as circular slab and surface area with auxiliary valve plate (15).
4. a kind of gate valve with emergency opening function according to claim 1, it is characterised in that: first connection ring
(2) as the second connection ring (4) size.
5. a kind of gate valve with emergency opening function according to claim 1, it is characterised in that: the threaded stem
(11) top is fixed with handwheel (29).
6. a kind of gate valve with emergency opening function according to claim 2, it is characterised in that: two long screw threads
Bar (26) is vertically arranged and parallel to each other.
7. a kind of gate valve with emergency opening function according to claim 2, it is characterised in that: each long screw thread
Two sides are respectively and fixedly provided with rotating bar (28) at the top of bar (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322621.6A CN109268518B (en) | 2018-11-08 | 2018-11-08 | A kind of gate valve with emergency opening function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322621.6A CN109268518B (en) | 2018-11-08 | 2018-11-08 | A kind of gate valve with emergency opening function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109268518A true CN109268518A (en) | 2019-01-25 |
| CN109268518B CN109268518B (en) | 2019-11-15 |
Family
ID=65192379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811322621.6A Active CN109268518B (en) | 2018-11-08 | 2018-11-08 | A kind of gate valve with emergency opening function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109268518B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792792A (en) * | 2019-11-18 | 2020-02-14 | 晟福（天津）流体自动控制设备有限公司 | Valve with double sealing effect |
| WO2021216945A1 (en) * | 2020-04-24 | 2021-10-28 | Cameron International Corporation | Fracturing valve systems and methods |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751192Y (en) * | 2004-10-15 | 2006-01-11 | 湖北洪城通用机械股份有限公司 | Pressing ring adjustable double sealing knife shape gate valve |
| CN201787105U (en) * | 2010-08-27 | 2011-04-06 | 李卫军 | Totally enclosed lift type flow passage gate valve |
| CN104633151A (en) * | 2014-12-24 | 2015-05-20 | 鞍钢汽车运输有限责任公司 | Gate valve structure with emergency open function and implementation method |
| CN205401778U (en) * | 2016-03-10 | 2016-07-27 | 中正科技阀门有限公司 | Novel sluice valve |
| CN207393991U (en) * | 2017-09-12 | 2018-05-22 | 浙江百鼎斯阀业有限公司 | A kind of gate valve |
-
2018
- 2018-11-08 CN CN201811322621.6A patent/CN109268518B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2751192Y (en) * | 2004-10-15 | 2006-01-11 | 湖北洪城通用机械股份有限公司 | Pressing ring adjustable double sealing knife shape gate valve |
| CN201787105U (en) * | 2010-08-27 | 2011-04-06 | 李卫军 | Totally enclosed lift type flow passage gate valve |
| CN104633151A (en) * | 2014-12-24 | 2015-05-20 | 鞍钢汽车运输有限责任公司 | Gate valve structure with emergency open function and implementation method |
| CN205401778U (en) * | 2016-03-10 | 2016-07-27 | 中正科技阀门有限公司 | Novel sluice valve |
| CN207393991U (en) * | 2017-09-12 | 2018-05-22 | 浙江百鼎斯阀业有限公司 | A kind of gate valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110792792A (en) * | 2019-11-18 | 2020-02-14 | 晟福（天津）流体自动控制设备有限公司 | Valve with double sealing effect |
| WO2021216945A1 (en) * | 2020-04-24 | 2021-10-28 | Cameron International Corporation | Fracturing valve systems and methods |
| US11421508B2 (en) | 2020-04-24 | 2022-08-23 | Cameron International Corporation | Fracturing valve systems and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109268518B (en) | 2019-11-15 |
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| CB02 | Change of applicant information |
Address after: 325000 No. 1017, Jinhai Third Road, Airport New District, Longwan District, Wenzhou City, Zhejiang Province Applicant after: Zhejiang Zhengpeng Valve Co., Ltd. Address before: No. 3361 Yongqiang Road, Longwan District, Wenzhou City, Zhejiang Province, 325000 Applicant before: Zhejiang Zhengpeng Valve Co., Ltd. |
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