CN109990110A - Forced seal ball valve - Google Patents
Forced seal ball valve Download PDFInfo
- Publication number
- CN109990110A CN109990110A CN201910367501.6A CN201910367501A CN109990110A CN 109990110 A CN109990110 A CN 109990110A CN 201910367501 A CN201910367501 A CN 201910367501A CN 109990110 A CN109990110 A CN 109990110A
- Authority
- CN
- China
- Prior art keywords
- valve
- rod
- ball
- valve core
- ball valve
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000000694 effects Effects 0.000 claims abstract description 3
- 238000003780 insertion Methods 0.000 claims abstract description 3
- 230000037431 insertion Effects 0.000 claims abstract description 3
- 238000013461 design Methods 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 4
- 238000005299 abrasion Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000007812 deficiency Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/041—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves
- F16K31/043—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor for rotating valves characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return 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
- F16K5/0647—Spindles or actuating means
-
- 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
- F16K5/0673—Composite packings
-
- 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
- F16K5/06—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
- F16K5/0694—Spindle sealings
-
- 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
- F16K5/14—Special arrangements for separating the sealing faces or for pressing them together
- F16K5/20—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces
- F16K5/204—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the plugs or parts of the plugs mechanically pressing the seals against the housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses forced seal ball valves, including valve body, valve deck, ball valve core, valve seat and valve rod, it is characterized by: the lower end of ball valve core is connected and fixed pivot, fixed pivot axi can be swung and be rotated in Lower shaft sleeve, the upper end of ball valve core is setting of floating, the upper end of ball valve core has valve core opening, the lower rod end activity of valve rod penetrates in valve core opening and wedge surface is arranged in upper limit position, valve core opening is fixed with locking pin corresponding with wedge surface, the upper rod end of valve rod is equipped with screw thread and is screwed on valve stem nut screw thread, valve stem nut rotation is set in the bracket being fixedly mounted at the top of valve deck, the rotation of valve stem nut is pushed by execution unit, helical curve wire casing is equipped among valve rod, bracket is equipped in guide pin insertion helical curve wire casing.Switching process sealing surface can be achieved without friction in the present invention, turns off zero leakage, low torque, the seal pressure of valve adjust automatically with the abrasion of ball valve core substantially increases the service life of valve.
Description
Technical field
The present invention relates to a kind of improvement of ball valve inventions.
Background technique
Ball valve is widely used in medium in the conveyance conduits such as petroleum, chemical industry, medicine, weaving, papermaking, environmental protection, military project, airport
Cutting or circulation, the ball valve of the prior art are primarily present following deficiency: during valve switch between ball valve core and valve seat
Sealing surface will carry out contact friction, and valve shutdown is difficult to keep zero leakage for a long time, and the unlatching torque of valve is larger, the sealing of valve
Than pressure be difficult to reliably with the abrasion of ball valve core and adjust automatically, valve service life are short.
Summary of the invention
In view of the deficiencies of the prior art, the purpose of the present invention is intended to provide a kind of achievable switching process sealing surface without rubbing
It wipes, turns off zero leakage, low torque, the seal pressure of valve adjust automatically with the abrasion of ball valve core was greatly improved using the longevity
The forced seal ball valve of life.
The technical solution adopted by the present invention is that:
Forced seal ball valve, including valve body, valve deck, ball valve core, valve seat and valve rod, it is characterised in that: the lower end of ball valve core
It is connected and fixed pivot, fixed pivot axi can be swung and be rotated in Lower shaft sleeve, and the upper end of ball valve core is setting of floating, sphere
The upper end of spool has valve core opening, and the lower rod end activity of valve rod penetrates in valve core opening and wedge surface, valve is arranged in upper limit position
Core opening is fixed with locking pin corresponding with wedge surface, and the upper rod end of valve rod is equipped with screw thread and is screwed on valve stem nut screw thread, valve rod
Nut rotation is set in the bracket being fixedly mounted at the top of valve deck, and the rotation of valve stem nut is pushed by execution unit, valve rod
Centre is equipped with the helical curve wire casing for making valve rod make 90 degree of rotations, and bracket is equipped in guide pin insertion helical curve wire casing.
The forced seal ball valve of above-mentioned technical proposal, during opening and closing, ball valve core and sealing surface of seat are
It is detached from, pushes ball valve core to valve seat again after being rotated in place and realize sealing, sealing surface in the entire rotary course of ball valve core
Do not rub.Concrete operating principle is: when valve is in fully open position, handwheel is rotated clockwise, in valve stem nut and thrust
Under bearing fit, valve rod is begun to decline, and then under helical curve wire casing and guide pin cooperation, valve rod is declining while making side clockwise
To rotation, then ball valve core is rotated synchronously with valve rod, when valve rod drive ball valve core with sealing surface of seat entirely without rubbing
After being rotated by 90 ° in the case where wiping, handwheel is continued to rotate, the valve rod declined again can mechanically be pressed by the wedge surface of rod end under valve rod
Compel ball valve core, ball valve core is made to carry out sidesway to valve seat direction, then ball valve core and sealing surface of seat are in close contact, and are generated
Required seal pressure influences the leakproofness of valve by the variation of pipeline pressure difference, and can have in various operating condition seal performances can
By guaranteeing.Conversely, valve rod promotion is detached from ball valve core to left dislocation and valve seat, then valve rod ability when Open valve
Driving ball valve core turns to open position.In addition, there is lower end fixed pivot axi and upper end floating structure because ball valve core uses,
Valve opening sealing surface frictionless contact first lays down the pressure in valve chamber and remakes 90 degree of rotation, thus be not required to elongated bar and
Handle is impacted, makes to operate Portable power saving, so being low torque operation.In addition, the stream when ball valve core inclines from valve seat, in pipeline
Know from experience and form 360 ° of uniform flowings in ball seal face rapidly, not only eliminates high-velocity fluid and valve seat part is washed away, together
When also washed away foreign debris and accumulations on sealing surface, guarantee the cleaning of valve inner.
Preferably, the valve seat is unidirectionally to design in body cavity, it is close that the assembly outer circle of valve seat and valve body is equipped with O-ring
The sealing contact surface of envelope, valve seat and ball valve core is sealed equipped with greasing.In above-mentioned design, since valve seat uses unidirectional design,
So avoiding the problem of increasing using the chamber pressure of valve when two-way valve seat, thermal expansion problem is also eliminated, without carrying out
Heat release and valve body are released automatically.In addition, the greasing sealing system being equipped with, once when sealing surface of seat has damage or cracking, it can
Stop-leak compound is injected by greasing valve port, gets secondary sealing, it is ensured that the reliability of sealing.
Preferably, being equipped with electrostatic prevention structure between the valve rod and valve deck inner hole, electrostatic prevention structure is by antistatic steel ball
It is formed with anti-static spring, the valve rod is equipped with the placement that mounting hole is used for antistatic steel ball and anti-static spring.By above-mentioned
The valve rod of design, valve is continuously turned on by foring circuit between valve stem nut, valve deck, valve body, ball valve core, has reached anti-
Electrostatic efficiency.
Preferably, the valve rod is equipped with up-small and down-big cone step in the position close to lower rod end, the valve deck
Minimum diameter of bore is less than the outer diameter of cone step.By above-mentioned design, even if upper stem portion is broken, it is located at body cavity and is situated between
Lower stem portion in matter will not flush-out valve it is external, it is ensured that personal safety.
Preferably, the sealing between the valve rod and valve deck include upper packing seal, spacer ring sealing, lower packing seal and
O-ring seals, and greasing sealing is also set up at spacer ring sealing.By above-mentioned design, use can inject sealing between valve rod and valve deck
Rouge, flexible graphite packing and O-ring three seals system structure guarantee sealed reliable, are also convenient for valve on-site maintenance, especially
To the reparation of valve stem seal and the replacement of filler in pipeline situation with pressure.
Preferably, the valve rod is designed with lower limit, locating ring is fixedly mounted on valve rod.By above-mentioned design, may be used
It prevents valve rod from excessively moving down, avoids excessively being compressed between ball valve core and valve seat.
Detailed description of the invention:
Fig. 1 is the structural diagram of the present invention,
Fig. 2 is the portion the A enlarged drawing of Fig. 1,
Fig. 3 is the portion the B enlarged drawing of Fig. 1,
Fig. 4 is the portion the C enlarged drawing of Fig. 1,
Fig. 5 is the portion the D enlarged drawing of Fig. 1.
Specific embodiment:
As shown, forced seal ball valve of the invention, including valve body 1, valve deck 6, ball valve core 3, valve seat 2 and valve rod 8, sphere
The lower end of spool 3 is connected and fixed pivot 4, and fixed pivot axi 4 can be swung and be rotated in Lower shaft sleeve 5, and Lower shaft sleeve 5 is fixed on valve
On body 1, the upper end of ball valve core 3 is setting of floating, and the upper end of ball valve core 3 has valve core opening 16, and the lower rod end of valve rod 8 is living
Dynamic to penetrate in valve core opening 16 and wedge surface 15 is arranged in upper limit position, valve core opening 16 is fixed with locking corresponding with wedge surface 15
Pin 14, the upper rod end of valve rod 8 are equipped with screw thread and are screwed on 9 screw thread of valve stem nut, and the rotation of valve stem nut 9 is set to solid at the top of valve deck 6
In the bracket 7 of Dingan County's dress, valve stem nut 9 carries out axial limiting by retaining bearing 10, and the rotation of valve stem nut 9 is by electronic execution
Component 11 is pushed, and the helical curve wire casing 21 for making valve rod make 90 degree of rotations is equipped among valve rod 8, and bracket 7 is equipped with guide pin 19
It is inserted into helical curve wire casing 21.
The valve seat 2 is unidirectionally to design in 1 inner cavity of valve body, and the assembly outer circle of valve seat 2 and valve body 1 is equipped with O-ring sealing 17,
The sealing contact surface of valve seat 2 and ball valve core 3 is equipped with greasing sealing 18.Antistatic is equipped between 6 inner hole of the valve rod 8 and valve deck
Structure, electrostatic prevention structure are made of antistatic steel ball 13 and anti-static spring 12, and the valve rod 8 is equipped with mounting hole and is used for antistatic
The placement of steel ball 13 and anti-static spring 12.The valve rod 8 is equipped with up-small and down-big cone step in the position close to lower rod end
27, the minimum diameter of bore of the valve deck 6 is less than the outer diameter of cone step 27, and body cavity is located at when valve rod 8 can be prevented to be broken
Lower stem portion in medium will not flush-out valve it is external, it is ensured that personal safety.Sealing between the valve rod 8 and valve deck 6 includes
Upper packing seal 22, spacer ring sealing 23, lower packing seal 25 and O-ring sealing 26, spacer ring, which seals, also sets up greasing sealing at 23
24.The valve rod 8 is designed with lower limit, and locating ring 20 is fixedly mounted on valve rod 8.
The forced seal ball valve of above structure can replace ordinary ball valve, gate valve, plug valve etc. and carry out using with them
Compare, accomplished switching process sealing surface without friction, turn off zero leakage, low torque, the seal pressure of valve with sphere abrasion
And adjust automatically substantially increases the service life of valve, is optimal using unit without helping by the pressure difference of pipeline
Valve.
Claims (6)
1. forced seal ball valve, including valve body, valve deck, ball valve core, valve seat and valve rod, it is characterised in that: under ball valve core
End is connected and fixed pivot, and fixed pivot axi can be swung and be rotated in Lower shaft sleeve, and the upper end of ball valve core is setting of floating, ball
The upper end of body spool has valve core opening, and the lower rod end activity of valve rod penetrates in valve core opening and wedge surface is arranged in upper limit position,
Valve core opening is fixed with locking pin corresponding with wedge surface, and the upper rod end of valve rod is equipped with screw thread and is screwed on valve stem nut screw thread, valve
Stem nut rotation is set in the bracket being fixedly mounted at the top of valve deck, and the rotation of valve stem nut is pushed by execution unit, valve
The helical curve wire casing for making valve rod make 90 degree of rotations is equipped among bar, bracket is equipped in guide pin insertion helical curve wire casing.
2. forced seal ball valve as described in claim 1, it is characterised in that: the valve seat is unidirectional design in body cavity,
The assembly outer circle of valve seat and valve body is sealed equipped with O-ring, and the sealing contact surface of valve seat and ball valve core is sealed equipped with greasing.
3. forced seal ball valve as described in claim 1, it is characterised in that: quiet equipped with preventing between the valve rod and valve deck inner hole
Electric structure, electrostatic prevention structure are made of antistatic steel ball and anti-static spring, and the valve rod is equipped with mounting hole and is used for antistatic steel
The placement of pearl and anti-static spring.
4. forced seal ball valve as described in claim 1, it is characterised in that: the valve rod is equipped in the position close to lower rod end
Up-small and down-big cone step, the minimum diameter of bore of the valve deck are less than the outer diameter of cone step.
5. forced seal ball valve as described in claim 1, it is characterised in that: the sealing between the valve rod and valve deck includes upper
Packing seal, spacer ring sealing, lower packing seal and O-ring seal, and greasing sealing is also set up at spacer ring sealing.
6. forced seal ball valve as described in claim 1, it is characterised in that: the valve rod is designed with lower limit, on valve rod
Locating ring is fixedly mounted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367501.6A CN109990110A (en) | 2019-05-05 | 2019-05-05 | Forced seal ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910367501.6A CN109990110A (en) | 2019-05-05 | 2019-05-05 | Forced seal ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109990110A true CN109990110A (en) | 2019-07-09 |
Family
ID=67136064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910367501.6A Withdrawn CN109990110A (en) | 2019-05-05 | 2019-05-05 | Forced seal ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990110A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608297A (en) * | 2019-10-25 | 2019-12-24 | 沪航科技集团有限公司 | Eccentric half ball valve |
| CN113309871A (en) * | 2021-06-07 | 2021-08-27 | 自贡自高阀门有限公司 | Valve rod guide structure of forced sealing ball valve |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3515371A (en) * | 1966-06-06 | 1970-06-02 | Orbit Valve Co | Valve and valve seat |
| US5263685A (en) * | 1992-07-13 | 1993-11-23 | Orbit Valve Company | Valve seat |
| CN2333844Y (en) * | 1998-09-23 | 1999-08-18 | 刘承昭 | Forced sealing ball valve |
| CN204164409U (en) * | 2014-10-10 | 2015-02-18 | 方正阀门集团有限公司 | Rail mounted ultra low temperature hard seal fixing ball valve |
| US20180094505A1 (en) * | 2014-10-01 | 2018-04-05 | Cameron International Corporation | Stem guide system |
| CN207864677U (en) * | 2018-01-05 | 2018-09-14 | 浙江中德自控科技股份有限公司 | A kind of ball valve |
| CN208474540U (en) * | 2018-04-16 | 2019-02-05 | 西尼（南京）阀门机械有限公司 | A kind of longitudinal single weld seam all-welded ball valve of spherical |
| CN209876012U (en) * | 2019-05-05 | 2019-12-31 | 凯瑞特阀业有限公司 | Forced sealing ball valve |
-
2019
- 2019-05-05 CN CN201910367501.6A patent/CN109990110A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3515371A (en) * | 1966-06-06 | 1970-06-02 | Orbit Valve Co | Valve and valve seat |
| US5263685A (en) * | 1992-07-13 | 1993-11-23 | Orbit Valve Company | Valve seat |
| CN2333844Y (en) * | 1998-09-23 | 1999-08-18 | 刘承昭 | Forced sealing ball valve |
| US20180094505A1 (en) * | 2014-10-01 | 2018-04-05 | Cameron International Corporation | Stem guide system |
| CN204164409U (en) * | 2014-10-10 | 2015-02-18 | 方正阀门集团有限公司 | Rail mounted ultra low temperature hard seal fixing ball valve |
| CN207864677U (en) * | 2018-01-05 | 2018-09-14 | 浙江中德自控科技股份有限公司 | A kind of ball valve |
| CN208474540U (en) * | 2018-04-16 | 2019-02-05 | 西尼（南京）阀门机械有限公司 | A kind of longitudinal single weld seam all-welded ball valve of spherical |
| CN209876012U (en) * | 2019-05-05 | 2019-12-31 | 凯瑞特阀业有限公司 | Forced sealing ball valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110608297A (en) * | 2019-10-25 | 2019-12-24 | 沪航科技集团有限公司 | Eccentric half ball valve |
| CN110608297B (en) * | 2019-10-25 | 2024-04-16 | 沪航科技集团有限公司 | Eccentric hemisphere valve |
| CN113309871A (en) * | 2021-06-07 | 2021-08-27 | 自贡自高阀门有限公司 | Valve rod guide structure of forced sealing ball valve |
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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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190709 |