CN108591515A - A kind of double stub shaft control ball valve - Google Patents
A kind of double stub shaft control ball valve Download PDFInfo
- Publication number
- CN108591515A CN108591515A CN201810509757.1A CN201810509757A CN108591515A CN 108591515 A CN108591515 A CN 108591515A CN 201810509757 A CN201810509757 A CN 201810509757A CN 108591515 A CN108591515 A CN 108591515A
- Authority
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- China
- Prior art keywords
- straight trough
- valve
- locating slot
- ball valve
- bar
- 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
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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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0605—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0689—Packings between housing and plug
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/08—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The present invention relates to a kind of double stub shafts to control ball valve, it is characterised in that：The runner bottom surface is provided with locating slot, preceding straight trough and rear straight trough, the locating slot centered on the ball valve vertical axis line at fan arcuate structure, preceding straight trough is arranged in the underface of the ball valve horizontal axis, the preceding straight trough one end is communicated with one end of locating slot, the junction of preceding straight trough and locating slot is equipped with preceding arc surface, the preceding straight trough other end stretches to runner mouth nearby, the other end in locating slot is arranged in straight trough afterwards, and be arranged at 90 degree with preceding straight trough, the junction of rear straight trough and locating slot is equipped with rear arc surface；Regulating device is equipped in the runner, which includes ball clack, compressed spring, telescopic rod, locating rod and adjusting set, and lateral card device is equipped in the locating rod lower end；It is internally provided with upper interior bar in upper outer bar, interior bar upper end is equipped with the upper wrench being laterally arranged on this, and upper interior bar lower end is equipped with the straight-bar that lateral cross section is ellipse, has the advantages that protection against erosion is good, long lifespan.
Description
Technical field
The present invention relates to a kind of ball valves, and ball valve is controlled more particularly, to a kind of double stub shaft.
Background technology
Existing ball valve, includes mainly valve body, valve seat, sphere and upper valve rod, and sphere is placed in body cavity, energy is equipped in sphere
The runner communicated with body cavity, valve seat are made of non-metallic plastic material, can be formed and be sealed with outer surface of spheroid, sphere is by valve
Bar drives and makees 90 degree of rotary motions around ball valve axis, the open and close with valve seat cooperation for fluid, its shortcoming is that：
During sphere opens and closes, part valve seat can be detached from spherome surface, and the medium of ball valve inlet side can pass through valve seat and ball
Gap between body surface face is flowed to ball valve outlet side, and the medium of the flowing of medium, especially high-voltage high-speed can be to valve seat table
Face is washed away, and to destroy valve seat, causes valve leak, service life short.
Invention content
For technological deficiency existing in the prior art, a kind of valve seat protection against erosion of present invention offer is good, service life is long,
A kind of safe double stub shaft control ball valve and its application method.
The present invention realizes by following technical solution：
A kind of double stub shaft control ball valve, including：Valve body, sphere, valve seat, filler, gland, lower wrench, upper outer bar and lower valve rod,
Upper end is equipped with connecting flange and packing groove in the middle part of valve body, and filler is fixedly installed in packing groove by gland, and gland is tight by standard
Firmware is mounted at the connecting flange, and lower wrench horizontal direction is mounted on upper outer bar upper end, and upper outer bar lower end is stretched across packing groove
Enter body cavity to connect with sphere, sphere is placed in body cavity, and outer surface of spheroid is spherical surface structure, and being equipped in sphere can be with
The runner that body cavity communicates, valve seat are made of non-metallic plastic material and are vertically provided at body cavity, and valve seat is equipped with and ball
External surface forms the sealing surface of seat of sealing, and sphere is driven by upper outer bar and around 90 degree of rotations of the ball valve vertical axis, thus
It is turned on and off the ball valve, lower valve rod lower part is fixedly mounted on valve body middle and lower part, and the upper end of lower valve rod is connect with sphere, feature
It is：The runner bottom surface is provided with locating slot, preceding straight trough and rear straight trough, locating slot line centered on the ball valve vertical axis
At fan arcuate structure, preceding straight trough is arranged in the underface of the ball valve horizontal axis, one end phase of the preceding straight trough one end and locating slot
Logical, the junction of preceding straight trough and locating slot is equipped with preceding arc surface, which stretches to runner mouth nearby, and rear straight trough is set
The other end in locating slot is set, and is arranged at 90 degree with preceding straight trough, the junction of rear straight trough and locating slot is equipped with rear arc surface；
Regulating device is equipped in the runner, which includes ball clack, compressed spring, telescopic rod, locating rod and adjusting set, adjusting set
At inverted bucket shape structure, and line is vertically provided in runner centered on the vertical axis of the ball valve, and ball clack one end is equipped with and sphere
The consistent spherical surface of appearance radius surface, ball clack outer circle is consistent with the size of runner mouth diameter, and telescopic rod is laterally arranged, should
Telescopic rod one end is fixed at ball clack other end, which, which is equipped with, adjusts card slot, and stretches into adjusting set, fixed
Position bar is vertically arranged, which is fixed on telescopic rod, and locating rod lower end is stretched into locating slot, in the locating rod lower end
Equipped with lateral card device, which includes clamp and butterfly spring, and straight trough after clamp can stretch under the promotion of butterfly spring compresses bullet
Spring is horizontally installed between ball clack and adjusting set；It is internally provided with upper interior bar in upper outer bar, upper outer bar upper end is stretched out in upper interior bar upper end
Face, interior bar upper end is equipped with the upper wrench being laterally arranged on this, and upper interior bar lower end is equipped with the straight-bar that lateral cross section is ellipse,
The straight-bar stretches to adjusting set inner cavity lower part by adjusting card slot.
Further, retaining block is installed at the packing groove, the retaining block by standard fasteners fix filler with
Between filler groove bottom.
Further, O-ring seal is equipped between the upper outer bar and upper interior bar.
Further, the seat material is polytetrafluoroethylene (PTFE).
Further, the valve body is made of left and right valve body, and left and right valve body is fixedly mounted on by standard fasteners
Together.
A kind of application method of double stub shaft control ball valve:
It is as follows to close a kind of application method of double stub shaft control ball valve:
A. upper interior bar is rotated using upper wrench, drives adjusting set, telescopic rod, locating rod, compressed spring and ball clack together along fixed
The shape rotation of position slot,
B. before locating rod reaches when straight trough position, ball clack is moved along preceding straight trough to runner mouth under the promotion of compressed spring,
Finally
Ball clack rests on runner mouth, and ball clack outer surface forms one with outer surface of spheroid,
C. it is rotated further by upper outer bar using lower wrench to rotate at 90 degree, closes a kind of double stub shaft control ball valve;Valve is closed at this time
It is as follows to open a kind of application method of double stub shaft control ball valve:
A. outer bar is rotated first using lower wrench to rotate at 90 degree, the import that runner mouth is directed at the ball valve is made to go out,
B. the upper upper interior bar of wrench rotation, telescopic rod is recycled to drive locating rod edge under the action of section is the straight-bar of ellipse
Arc surface is detached from before
Preceding straight trough, while ball clack being driven to be detached from runner mouth,
C. continue to rotate interior bar, ball clack, compressed spring, telescopic rod, locating rod driven to return to home position along locating slot,
The clamp of card device enters rear straight trough, at this time valve opening under the action of butterfly spring along rear arc surface at this time.
The advantage of the invention is that：Runner position be equipped with regulating device, during valve opening, closing, the valve into
The medium of mouth side will not be flowed by the gap between outer surface of spheroid and sealing surface of seat to outlet side, and medium will not be to valve seat
Sealing surface is washed away, the effective service life for extending valve seat；Retaining block is installed, it is ensured that replacing filler at packing groove
When, it prevents upper valve rod from flying out under the action of pressure medium, has the advantages that safe；Upper outer bar and upper interior bar are set
It sets, has the advantages that easy to adjust；The simple, convenient, and reliable property of application method of the valve is high.
Description of the drawings
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is the vertical view of the locating slot of the present invention, preceding straight trough and rear straight trough.
Specific implementation mode：
According to Fig. 1, Fig. 2 it is found that a kind of double stub shaft controls ball valve, including：Valve body 1, sphere 2, valve seat 3, filler 13, gland
14, lower wrench 16, upper outer bar 12 and lower valve rod 10,1 middle part upper end of valve body are equipped with connecting flange and packing groove, and filler 13 is by gland
14 are fixedly installed at packing groove, and gland 14 is mounted on by standard fasteners at the connecting flange, lower 16 horizontal direction of wrench
Mounted on 12 upper end of upper outer bar, 12 lower end of upper outer bar is stretched into 1 inner cavity of valve body across packing groove and is connect with sphere 2, and sphere 2 is placed in valve
1 inner cavity of body, 2 outer surface of sphere are spherical surface structure, are equipped with the runner that can be communicated with 1 inner cavity of valve body in sphere 2, valve seat 3 by
Non-metallic plastic material is made and is vertically provided at 1 inner cavity of valve body, and valve seat 3 is equipped with the valve seat that sealing is formed with 2 outer surface of sphere
Sealing surface, sphere 2 is driven by upper outer bar 12 and around 90 degree of rotation of the ball valve vertical axis, to be turned on and off the ball valve, under
10 lower part of valve rod is fixedly mounted on 1 middle and lower part of valve body, and the upper end of lower valve rod 10 is connect with sphere 2, is provided in the runner bottom surface
Locating slot 8, preceding straight trough 19 and rear straight trough 21, the locating slot 8 line centered on the ball valve vertical axis are preceding straight at fan arcuate structure
Slot 19 is arranged in the underface of the ball valve horizontal axis, which communicates with one end of locating slot 8, preceding straight trough 19 with
The junction of locating slot 8 is equipped with preceding arc surface 18, which stretches to runner mouth nearby, and the setting of rear straight trough 21 exists
The other end of locating slot 8, and be arranged at 90 degree with preceding straight trough 19, rear straight trough 21 and the junction of locating slot 8 are equipped with rear arc surface
20；Regulating device is equipped in the runner, which includes ball clack 4, compressed spring 5, telescopic rod 6, locating rod 7 and adjust
Set 11, adjusting set 11 is at inverted bucket shape structure, and line is vertically provided in runner centered on the vertical axis of the ball valve, ball clack 4
One end is equipped with the spherical surface consistent with 2 appearance radius surface of sphere, and 4 outer circle of ball clack is consistent with the size of runner mouth diameter,
Laterally setting, 6 one end of telescopic rod are fixed at 4 other end of ball clack to telescopic rod 6, which, which is equipped with, is adjusted
Card slot, and stretch into adjusting set 11, locating rod 7 is vertically arranged, which is fixed on telescopic rod 6, under locating rod 7
End is stretched into locating slot 8, and lateral card device 9 is equipped in 7 lower end of locating rod, which includes clamp and butterfly spring, clamp
Straight trough 21 after being stretched under the promotion of butterfly spring, compressed spring 5 are horizontally installed between ball clack 4 and adjusting set 11；In upper outer bar
12 are internally provided with interior bar 15, and upper 12 upper surface of outer bar is stretched out in 15 upper end of upper interior bar, and 15 upper end of interior bar is equipped with transverse direction on this
The upper wrench 17 being arranged, 15 lower end of upper interior bar are equipped with the straight-bar that lateral cross section is ellipse, which is stretched to by adjusting card slot
11 inner cavity lower part of adjusting set is equipped with retaining block at the packing groove, which fixes filler by standard fasteners and fill out
Between hopper bottom surface, O-ring seal is equipped between the upper outer bar and upper interior bar.
It is as follows to close a kind of application method of double stub shaft control ball valve:
A. upper interior bar 15 is rotated using upper wrench 17, drives adjusting set 11, telescopic rod 6, locating rod 7, compressed spring 8 and ball clack 4
It is rotated together along the shape of locating slot 8,
B. before locating rod 7 reaches when 19 position of straight trough, ball clack 4 is under the promotion of compressed spring 5 along preceding straight trough 19 to runner
Mouth is mobile, and last ball clack 4 rests on runner mouth, and 4 outer surface of ball clack forms one with 2 outer surface of sphere,
C. it is rotated further by upper outer bar 12 using lower wrench 16 to rotate at 90 degree, closes a kind of double stub shaft control ball valve;
During closing, sealing surface of seat is tightly attached to sphere or ball clack surface always, and the medium of the ball valve inlet side can not
Enter outlet side by sphere or ball clack surface, medium will not wash away sealing surface of seat.
It is as follows to open a kind of application method of double stub shaft control ball valve:
A. it rotates upper outer bar 12 first using lower wrench 16 to rotate at 90 degree, the import that runner mouth is directed at the ball valve is made to go out,
B. the upper upper interior bar 15 of the rotation of wrench 17, telescopic rod 6 is recycled to drive positioning under the action of section is the straight-bar of ellipse
Bar 7 is along preceding circular arc
Face 18 is detached from preceding straight trough 19, while ball clack 4 being driven to be detached from runner mouth,
C. continue to rotate interior bar 15, ball clack 4, compressed spring 5, telescopic rod 6, locating rod 7 is driven to return to original along locating slot 8
Beginning position, at this time the clamp of card device 9 under the action of butterfly spring, along rear arc surface 20 enter rear straight trough 21, open completely at this time
It opens.
During unlatching, sealing surface of seat is tightly attached to sphere or ball clack surface, the medium of the ball valve inlet side always
Outlet side can not be entered by sphere or ball clack surface, medium will not wash away sealing surface of seat.
In conclusion the above is merely preferred embodiments of the present invention, being not intended to limit the scope of the present invention.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of double stub shaft controls ball valve, including：Valve body, sphere, valve seat, filler, gland, lower wrench, upper outer bar and lower valve rod,
Upper end is equipped with connecting flange and packing groove in the middle part of valve body, and filler is fixedly installed in packing groove by gland, and gland is tight by standard
Firmware is mounted at the connecting flange, and lower wrench horizontal direction is mounted on upper outer bar upper end, and upper outer bar lower end is stretched across packing groove
Enter body cavity to connect with sphere, sphere is placed in body cavity, and outer surface of spheroid is spherical surface structure, and being equipped in sphere can be with
The runner that body cavity communicates, valve seat are made of non-metallic plastic material and are vertically provided at body cavity, and valve seat is equipped with and ball
External surface forms the sealing surface of seat of sealing, and sphere is driven by upper outer bar and around 90 degree of rotations of the ball valve vertical axis, thus
It is turned on and off the ball valve, lower valve rod lower part is fixedly mounted on valve body middle and lower part, and the upper end of lower valve rod is connect with sphere, feature
It is：The runner bottom surface is provided with locating slot, preceding straight trough and rear straight trough, locating slot line centered on the ball valve vertical axis
At fan arcuate structure, preceding straight trough is arranged in the underface of the ball valve horizontal axis, one end phase of the preceding straight trough one end and locating slot
Logical, the junction of preceding straight trough and locating slot is equipped with preceding arc surface, which stretches to runner mouth nearby, and rear straight trough is set
The other end in locating slot is set, and is arranged at 90 degree with preceding straight trough, the junction of rear straight trough and locating slot is equipped with rear arc surface；
Regulating device is equipped in the runner, which includes ball clack, compressed spring, telescopic rod, locating rod and adjusting set, adjusting set
At inverted bucket shape structure, and line is vertically provided in runner centered on the vertical axis of the ball valve, and ball clack one end is equipped with and sphere
The consistent spherical surface of appearance radius surface, ball clack outer circle is consistent with the size of runner mouth diameter, and telescopic rod is laterally arranged, should
Telescopic rod one end is fixed at ball clack other end, which, which is equipped with, adjusts card slot, and stretches into adjusting set, fixed
Position bar is vertically arranged, which is fixed on telescopic rod, and locating rod lower end is stretched into locating slot, in the locating rod lower end
Equipped with lateral card device, which includes clamp and butterfly spring, and straight trough after clamp can stretch under the promotion of butterfly spring compresses bullet
Spring is horizontally installed between ball clack and adjusting set；It is internally provided with upper interior bar in upper outer bar, upper outer bar upper end is stretched out in upper interior bar upper end
Face, interior bar upper end is equipped with the upper wrench being laterally arranged on this, and upper interior bar lower end is equipped with the straight-bar that lateral cross section is ellipse,
The straight-bar stretches to adjusting set inner cavity lower part by adjusting card slot.
2. a kind of double stub shaft according to claim 1 controls ball valve, it is characterised in that：Resistance shelves are installed at the packing groove
Block, the retaining block are fixed by standard fasteners between filler and filler groove bottom.
3. a kind of double stub shaft according to claim 1 controls ball valve, it is characterised in that：Between the upper outer bar and upper interior bar
Equipped with O-ring seal.
4. a kind of double stub shaft according to claim 1 controls ball valve, it is characterised in that：The seat material is polytetrafluoroethyl-ne
Alkene.
5. a kind of double stub shaft according to claim 1 controls ball valve, it is characterised in that：The valve body is by left and right valve body group
At left and right valve body is fixedly installed togather by standard fasteners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509757.1A CN108591515A (en) | 2018-05-24 | 2018-05-24 | A kind of double stub shaft control ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810509757.1A CN108591515A (en) | 2018-05-24 | 2018-05-24 | A kind of double stub shaft control ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108591515A true CN108591515A (en) | 2018-09-28 |
Family
ID=63629094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810509757.1A Pending CN108591515A (en) | 2018-05-24 | 2018-05-24 | A kind of double stub shaft control ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108591515A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361013A (en) * | 2020-11-25 | 2021-02-12 | 单县兴源塑胶阀门有限公司 | Plastic valve and processing and manufacturing method thereof |
| CN113324051A (en) * | 2021-07-01 | 2021-08-31 | 永嘉企达知识产权咨询有限公司 | Butterfly valve with double butterfly plates |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440969A (en) * | 1994-03-09 | 1995-08-15 | Shin; Wan-Sheng | Cylinder-operated and spring-loaded driving mechanism for a ball valve |
| CN1298067A (en) * | 1999-11-30 | 2001-06-06 | 王加新 | Rolling ball valve sealing structure |
| KR20030086952A (en) * | 2003-09-29 | 2003-11-12 | 신관철 | Ball valve |
| CN104913080A (en) * | 2015-04-20 | 2015-09-16 | 广州市昊封流体工程技术有限公司 | Non-wear boosting ball valve |
| CN206092998U (en) * | 2016-05-25 | 2017-04-12 | 中冶南方工程技术有限公司 | Butterfly valve |
| CN106763856A (en) * | 2017-02-22 | 2017-05-31 | 李祥庆 | One kind is without abradable seal plug valve |
-
2018
- 2018-05-24 CN CN201810509757.1A patent/CN108591515A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5440969A (en) * | 1994-03-09 | 1995-08-15 | Shin; Wan-Sheng | Cylinder-operated and spring-loaded driving mechanism for a ball valve |
| CN1298067A (en) * | 1999-11-30 | 2001-06-06 | 王加新 | Rolling ball valve sealing structure |
| KR20030086952A (en) * | 2003-09-29 | 2003-11-12 | 신관철 | Ball valve |
| CN104913080A (en) * | 2015-04-20 | 2015-09-16 | 广州市昊封流体工程技术有限公司 | Non-wear boosting ball valve |
| CN206092998U (en) * | 2016-05-25 | 2017-04-12 | 中冶南方工程技术有限公司 | Butterfly valve |
| CN106763856A (en) * | 2017-02-22 | 2017-05-31 | 李祥庆 | One kind is without abradable seal plug valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112361013A (en) * | 2020-11-25 | 2021-02-12 | 单县兴源塑胶阀门有限公司 | Plastic valve and processing and manufacturing method thereof |
| CN112361013B (en) * | 2020-11-25 | 2022-05-13 | 单县兴源塑胶阀门有限公司 | Plastic valve and processing and manufacturing method thereof |
| CN113324051A (en) * | 2021-07-01 | 2021-08-31 | 永嘉企达知识产权咨询有限公司 | Butterfly valve with double butterfly plates |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180928 |
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| RJ01 | Rejection of invention patent application after publication |