CN108916445A - A kind of polyethylene ball valve - Google Patents
A kind of polyethylene ball valve Download PDFInfo
- Publication number
- CN108916445A CN108916445A CN201810963750.7A CN201810963750A CN108916445A CN 108916445 A CN108916445 A CN 108916445A CN 201810963750 A CN201810963750 A CN 201810963750A CN 108916445 A CN108916445 A CN 108916445A
- Authority
- CN
- China
- Prior art keywords
- valve
- ball
- valve rod
- wall
- annular convex
- 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
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 20
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 20
- -1 polyethylene Polymers 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 75
- 238000004026 adhesive bonding Methods 0.000 claims description 6
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 20
- 239000003345 natural gas Substances 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000010008 shearing Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/12—Covers for housings
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
-
- 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
- F16K5/0689—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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Taps Or Cocks (AREA)
Abstract
The invention discloses a kind of polyethylene ball valves,It is related to ball valve technical field,Including at least valve body,Valve ball,Valve seat,Adapter tube and valve rod,The valve ball is set to body cavity,Valve ball two sides respectively pass through a valve seat and clamp positioning,A valve ball sealing ring is equipped with towards valve ball side on two valve seats,An adapter tube is respectively connected at the valve port at valve body both ends,Body top offers a valve rod through hole,The valve rod passes through valve rod through hole and connect with valve ball,Valve rod on the outside of valve body is equipped with an operation cap,The valve outer wall is equipped with an annular convex platform,The valve rod through hole is located on the inside of annular convex platform,Annular convex platform is equipped with a dismountable seal cap,The seal cap is set on annular convex platform and with annular convex platform by being threadedly engaged fixation,Sealing structure is equipped between seal cap and annular convex platform,The operation cap is located in seal cap.The present invention proposes that the natural gas in a kind of conveying is not easy to leak to the polyethylene ball valve on the outside of ball valve from ball valve inner cavity.
Description
Technical field
The present invention relates to ball valve technical field more particularly to a kind of polyethylene ball valves.
Background technique
Polyethylene ball valve is mainly used for the natural gas transportation in gas ductwork.Polyethylene ball valve and conventional metals valve phase
Than, have the characteristics that light-weight, corrosion-resistant, non-maintaining, opening and closing torque is small, small in size, land occupation is few, and because with polyvinyl piping materials material
Matter matching, therefore it is easy for installation, using simple, in pipeline network of fuel gas in city with being widely used for polyethylene gas pipe and increasingly
Generally.
From structure, polyethylene ball valve belongs to floating ball valve, when valve ball is in closed state, in the side adapter tube of ball valve
Inflating pressure, valve ball can make the displacement relative to valve body, so that the sealing ring of unaerated side generates bigger extruding on valve seat
Deformation, and the sealing ring for inflating side then reduces deflection, the sealing ring for inflating side reduces deflection, be easy to cause adapter tube
Interior natural gas is leaked out in the gap between valve ball and valve body by the joint place between sealing ring and valve ball, so exist from
A possibility that leaking on the outside of ball valve at valve rod has biggish security risk.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes that the natural gas in a kind of conveying is not easy to leak to ball valve from ball valve inner cavity
The polyethylene ball valve in outside.
To achieve the goals above, the present invention uses following technical scheme：A kind of polyethylene ball valve, include at least valve body,
Valve ball, valve seat, adapter tube and valve rod, the valve ball are set to body cavity, and valve ball two sides respectively pass through a valve seat and clamp positioning, two valves
It is equipped with a valve ball sealing ring towards valve ball side on seat, valve ball sealing ring side is fixed with corresponding valve seat, the other side and valve ball
Gluing, sealing is respectively connected with an adapter tube at the valve port at valve body both ends, and body top offers a valve rod through hole, and the valve rod is worn
It crosses valve rod through hole and is connect with valve ball, the valve rod on the outside of valve body is equipped with an operation cap, and the valve outer wall is equipped with
One annular convex platform, the annular convex platform and valve body are integrally formed, and the valve rod through hole is located on the inside of annular convex platform, annular convex platform
It is equipped with a dismountable seal cap, the seal cap is set on annular convex platform and with annular convex platform by being threadedly engaged admittedly
It is fixed, sealing structure is equipped between seal cap and annular convex platform, the operation cap is located in seal cap.
Preferably, the outer wall of the annular convex platform is equipped with external screw thread, the inner wall of the seal cap is equipped with and annular
The matched internal screw thread of external screw thread on boss.
Preferably, the sealing structure between seal cap and annular convex platform includes the step being set on seal cap inner wall, patch
The sealing ring being located on step and the sealing surface at the top of annular convex platform are threadedly engaged rotation when seal cap passes through with annular convex platform
When fastening, gluing, sealing between sealing ring and sealing surface.
Preferably, the outer wall of the seal cap is equipped with a pressure gauge, runs through inside and outside wall in seal cap and offer a survey
Hole is pressed, the pressure measurement interface of the pressure gauge is docked with pressure tap.
Preferably, the valve body in be equipped with a cross slide, the cross slide in a tubular form, cross slide outer wall and valve
To be slidingly sealed cooperation between internal wall, cross slide is located between two valve seats and there are between sliding between two valve seats
Gap, the valve ball are located in the pore of cross slide, and a valve rod location hole is offered on cross slide, and the valve rod passes through valve rod
Location hole and valve ball connect and cooperate between valve rod and valve rod location hole for rotary seal；The valve rod through hole be in valve body
The consistent strip-shaped hole of heart axis direction, the valve rod can in valve rod through hole transverse shifting.
It is combined into preferably, being slidingly sealed between cross slide outer wall and valve interior wall is matched：The transverse direction of valve rod two sides is sliding
Several first sealing rings are arranged on seat, first sealing ring and cross slide sealing are fixed, the first sealing ring and valve body
Inner wall be slidingly sealed cooperation.
It is combined into preferably, the rotary seal between valve rod and valve rod location hole is matched：It is close that several second are arranged on valve rod
The inner wall of seal, second sealing ring and valve rod location hole, which seals, to be fixed, and the second sealing ring and valve rod are rotary seal cooperation.
Preferably, the inner wall of the cross slide is equipped with a valve ball positioning column, the valve ball positioning column is located at valve rod
Location hole face position, valve ball are equipped with a positioning hole, and valve ball positioning column is set to positioning hole and location hole is rotatably assorted.
Therefore, the present invention has the advantages that：1, it is provided with seal cap, so that being bonded between sealing ring and valve ball
Even if all there is leakage at place and valve rod, the natural gas in pipe valve will not be leaked on the outside of ball valve；2, it is arranged in seal cap
There is pressure gauge, when opening and closing valve ball by valve rod, observation pressure gauge reading can be first passed through and judge whether there is natural gas from valve rod
Place's leakage, securely and reliably；3, it is provided with the valve rod through hole of cross slide and strip, so that valve ball is displaced relative to valve body
When, valve rod not will receive lateral shearing stress.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the enlarged drawing in Fig. 1 at a.
Fig. 3 is the top view of valve body and adapter tube in the present invention.
Fig. 4 is the structural schematic diagram of seal cap in the present invention.
Fig. 5 is the structural schematic diagram of another angle of seal cap in the present invention.
Fig. 6 is the cross-sectional view of valve seat in the present invention.
Fig. 7 is the structural schematic diagram of valve seat in the present invention.
Fig. 8 is the cross-sectional view of cross slide in the present invention.
Fig. 9 is the structural schematic diagram of cross slide in the present invention.
1：Valve body；101：Valve rod through hole；102：Annular convex platform；103：Sealing surface；2：Valve ball；3：Valve seat；301：Valve ball
Sealing ring；4：Adapter tube；5：Valve rod；6：Operate cap；7：Seal cap；701：Step；702：Sealing ring；703：Pressure gauge；704：It surveys
Press hole；705：Internal screw thread；8：Cross slide；801：Valve rod location hole；802：Valve ball positioning column；803：First sealing ring；804：
Second sealing ring.
Specific embodiment
The present invention will be further described with specific embodiment with reference to the accompanying drawing.
A kind of polyethylene ball valve includes at least valve body 1, valve ball 2, valve seat 3, adapter tube 4 and valve rod 5, institute referring to Fig. 1 to Fig. 9
Valve ball 2 is stated set on 1 inner cavity of valve body, 2 two sides of valve ball respectively pass through a valve seat 3 clamping and position, towards 2 side of valve ball on two valve seats 3
It is equipped with a valve ball sealing ring 301,301 side of valve ball sealing ring is fixed with corresponding valve seat 3, the other side and 2 gluing, sealing of valve ball,
It is respectively connected with an adapter tube 4 at the valve port at 1 both ends of valve body, a valve rod through hole 101 is offered at the top of valve body 1, the valve rod 5 passes through
Valve rod through hole 101 is simultaneously connect with valve ball 2, and the valve rod 5 positioned at 1 outside of valve body is equipped with an operation cap 6,1 outer wall of valve body
It is equipped with an annular convex platform 102, the annular convex platform 102 is integrally formed with valve body 1, and the valve rod through hole 101 is located at annular
102 inside of boss, annular convex platform 102 are equipped with a dismountable seal cap 7, and the seal cap 7 is for sealing annular convex platform 102
Suitable for reading, seal cap 7 is set on annular convex platform 102 and with annular convex platform 102 by being threadedly engaged fixation, annular convex platform 102
Outer wall is equipped with external screw thread, and the inner wall of the seal cap 7 is equipped with and the matched internal screw thread of external screw thread on annular convex platform 102
705.Sealing structure, the sealing structure packet between seal cap 7 and annular convex platform 102 are equipped between seal cap 7 and annular convex platform 102
It includes the step 701 being set on 7 inner wall of seal cap, the sealing ring 702 being sticked on step 701 and is located at 102 top of annular convex platform
Sealing surface 103, when seal cap 7 and annular convex platform 102 are tightened by being threadedly engaged, sealing ring 702 and sealing surface 103
Between gluing, sealing, the operation cap 6 is located in seal cap 7.The outer wall of the seal cap 7 is equipped with a pressure gauge 703, sealing
A pressure tap 704 is offered through inside and outside wall on cap 7, the pressure measurement interface of the pressure gauge 703 is docked with pressure tap 704.Logical
Before crossing 5 rotary opening and closing valve ball 2 of valve rod, the observation reading of pressure gauge 703 can be first passed through and judge whether there is natural gas and let out from valve rod 5
Leakage, ensures the safety of operator.
Be equipped with a cross slide 8 in the valve body 1, the cross slide 8 in a tubular form, in 8 outer wall of cross slide and valve body 1
To be slidingly sealed cooperation between wall, being slidingly sealed between 1 inner wall of 8 outer wall of cross slide and valve body, which is matched, to be combined into：5 two sides of valve rod
Several first sealing rings 803 are arranged on cross slide 8, first sealing ring 803 is fixed with the sealing of cross slide 8, the
The inner wall of one sealing ring 803 and valve body 1 is to be slidingly sealed cooperation.Cross slide 8 be located between two valve seats 3 and with two valve seats
There are glade plane space between 3, the valve ball 2 is located in the pore of cross slide 8, and it is fixed that a valve rod is offered on cross slide 8
Position hole 801, the valve rod 5 across valve rod location hole 801 and the connection of valve ball 2 and are rotation valve rod 5 and valve rod location hole 801
Sealing cooperation, the rotary seal between valve rod 5 and valve rod location hole 801, which is matched, to be combined into：Several second sealing rings are arranged on valve rod 5
804, the inner wall sealing of second sealing ring 804 and valve rod location hole 801 is fixed, and the second sealing ring 804 is rotation with valve rod 5
Sealing cooperation.The valve rod through hole 101 be with the consistent strip-shaped hole of 1 central axial direction of valve body, the valve rod 5 can be in valve rod
Transverse shifting in through hole 101.The inner wall of the cross slide 8 is equipped with a valve ball positioning column 802, the valve ball positioning column
802 be located at 801 face position of valve rod location hole, valve ball 2 be equipped with a positioning hole, valve ball positioning column 802 be set to positioning hole and
Location hole is rotatably assorted, and valve ball positioning column 802 is for positioning valve ball 2, so that relative to cross slide 8 cross will not occur for valve ball 2
To displacement.
Ball valve of the present invention when normal use, if you need to use the ball valve to cut off gas ductwork, can first rotate in gas ductwork
Seal cap 7 is removed, then valve ball 2 is rotated by rotary valve rod 5 indirectly, makes the rotation of valve ball 2 to closed state.At this point, because of valve ball 2
Natural gas after still storing pressurization in the lumen of air inlet tube side, the intraluminal air pressure in air inlet tube side can connect greater than outlet
The intraluminal air pressure in pipe side, valve ball 2 can float toward outgoing gas connection tube side and deviate.Meanwhile the valve on outgoing gas connection tube side valve seat 3
The deformation quantity of ball sealing ring 301 increases, and the deformation quantity of the valve ball sealing ring 301 on air inlet tube side valve seat 3 then reduces, outlet
Natural gas in adapter tube may then be leaked out to by the joint place between valve ball sealing ring 301 and valve ball 2 valve ball 2 and valve body 1 it
Between gap in, and then there is a possibility that leaking on the outside of ball valve from valve rod 5.And it is provided on the outside of annular convex platform 102 close
Pressure gauge 703 is provided on sealing cap 7 and seal cap 7, operator can first pass through observation pressure when opening and closing valve ball 2 by valve rod 5
Power meter reading judges whether there is natural gas and leaks from valve rod 5, and whether reselection removes 7 rotary valve rod 5 of seal cap, operates really
Safety.
In conventional ball valve, when the floating of valve ball 2 deviates, the valve rod 5 connecting with valve ball 2 is by the valve rod through hole on valve body 1
101 limitations stop, and can not only will affect the sealing between valve rod 5 and valve body 1 by the shearing stress of a transverse direction, this shearing stress
Property, valve rod 5 can be also damaged over time.The present invention is located in cross slide by setting cross slide 8, by valve ball 2 and valve rod 5
It is provided with a valve ball positioning column 802 on 8, also, on cross slide 8, is positioned for enhancing valve ball 2, meanwhile, by valve rod through hole
101 are arranged to strip-shaped hole, so that valve ball 2 floats when offset, valve rod 5 can also make lateral offset in valve rod through hole 101, no
It will receive lateral shearing stress, ensure the service life of valve rod 5.It meanwhile between 1 inner wall of 8 outer wall of cross slide and valve body being sliding
Dynamic sealing cooperation, cooperates for rotary seal between valve rod 5 and valve rod location hole 801, has ensured sealing of the ball valve at valve rod 5
Property, even if having in gas seepage to the gap between valve ball 2 and valve body 1, will not be leaked to from valve rod 5 on the outside of ball valve.
Claims (8)
1. a kind of polyethylene ball valve includes at least valve body（1）, valve ball（2）, valve seat（3）, adapter tube（4）And valve rod（5）, the valve
Ball（2）Set on valve body（1）Inner cavity, valve ball（2）Two sides respectively pass through a valve seat（3）Clamp positioning, two valve seats（3）On towards valve ball
（2）Side is equipped with a valve ball sealing ring（301）, valve ball sealing ring（301）Side and corresponding valve seat（3）It is fixed, the other side with
Valve ball（2）Gluing, sealing, valve body（1）An adapter tube is respectively connected at the valve port at both ends（4）, valve body（1）Top offers a valve rod
Through hole（101）, the valve rod（5）Across valve rod through hole（101）And and valve ball（2）Connection is located at valve body（1）The valve in outside
Bar（5）It is equipped with an operation cap（6）, it is characterised in that：The valve body（1）Outer wall is equipped with an annular convex platform（102）, the ring
Shape boss（102）With valve body（1）It is integrally formed, the valve rod through hole（101）Positioned at annular convex platform（102）Inside, convex annular
Platform（102）It is equipped with a dismountable seal cap（7）, the seal cap（7）It is set in annular convex platform（102）Upper and and convex annular
Platform（102）By being threadedly engaged fixation, seal cap（7）With annular convex platform（102）Between be equipped with sealing structure, the operation cap
（6）Positioned at seal cap（7）It is interior.
2. a kind of polyethylene ball valve according to claim 1, it is characterised in that：The annular convex platform（102）Outer wall on
Equipped with external screw thread, the seal cap（7）Inner wall be equipped with and annular convex platform（102）On the matched internal screw thread of external screw thread
（705）.
3. a kind of polyethylene ball valve according to claim 1, it is characterised in that：Seal cap（7）With annular convex platform（102）It
Between sealing structure include be set to seal cap（7）Step on inner wall（701）, be sticked in step（701）On sealing ring（702）
And it is located at annular convex platform（102）The sealing surface at top（103）, work as seal cap（7）With annular convex platform（102）By being threadedly engaged rotation
When fastening, sealing ring（702）With sealing surface（103）Between gluing, sealing.
4. a kind of polyethylene ball valve according to claim 1 or 2 or 3, it is characterised in that：The seal cap（7）Outer wall
It is equipped with a pressure gauge（703）, seal cap（7）It is upper to offer a pressure tap through inside and outside wall（704）, the pressure gauge（703）
Pressure measurement interface and pressure tap（704）Docking.
5. a kind of polyethylene ball valve according to claim 1, it is characterised in that：The valve body（1）It is laterally sliding to be inside equipped with one
Seat（8）, the cross slide（8）In a tubular form, cross slide（8）Outer wall and valve body（1）It is horizontal to be slidingly sealed cooperation between inner wall
To slide（8）Positioned at two valve seats（3）Between and with two valve seats（3）Between there are glade plane space, the valve balls（2）It is located at
Cross slide（8）Pore in, cross slide（8）On offer a valve rod location hole（801）, the valve rod（5）Across valve rod
Location hole（801）With valve ball（2）Connection and valve rod（5）With valve rod location hole（801）Between for rotary seal cooperate；The valve rod
Through hole（101）For with valve body（1）The consistent strip-shaped hole of central axial direction, the valve rod（5）It can be in valve rod through hole（101）
Interior transverse shifting.
6. a kind of polyethylene ball valve according to claim 5, it is characterised in that：Cross slide（8）Outer wall and valve body（1）It is interior
Being slidingly sealed between wall, which is matched, to be combined into：Valve rod（5）The cross slide of two sides（8）On be arranged with several first sealing rings（803）,
First sealing ring（803）With cross slide（8）Sealing is fixed, the first sealing ring（803）With valve body（1）Inner wall be sliding
Sealing cooperation.
7. a kind of polyethylene ball valve according to claim 5, it is characterised in that：Valve rod（5）With valve rod location hole（801）It
Between rotary seal with being combined into：Valve rod（5）On be arranged with several second sealing rings（804）, second sealing ring（804）With valve
Bar location hole（801）Inner wall seal fix, the second sealing ring（804）With valve rod（5）For rotary seal cooperation.
8. a kind of polyethylene ball valve according to claim 5, it is characterised in that：The cross slide（8）Inner wall on set
There is a valve ball positioning column（802）, the valve ball positioning column（802）Positioned at valve rod location hole（801）Face position, valve ball（2）On
Equipped with a positioning hole, valve ball positioning column（802）Set on positioning hole and location hole is rotatably assorted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963750.7A CN108916445B (en) | 2018-08-23 | 2018-08-23 | polyethylene ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963750.7A CN108916445B (en) | 2018-08-23 | 2018-08-23 | polyethylene ball valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108916445A true CN108916445A (en) | 2018-11-30 |
| CN108916445B CN108916445B (en) | 2020-01-31 |
Family
ID=64405509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810963750.7A Active CN108916445B (en) | 2018-08-23 | 2018-08-23 | polyethylene ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108916445B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386628A (en) * | 2018-12-24 | 2019-02-26 | 宣琦 | A kind of valve for natural gas transportation |
| CN109578611A (en) * | 2018-12-24 | 2019-04-05 | 宣琦 | Ball valve |
| CN111677903A (en) * | 2020-06-22 | 2020-09-18 | 何浩南 | PE ball valve |
| CN111677904A (en) * | 2020-06-22 | 2020-09-18 | 何浩南 | Ball valve convenient to maintain |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180542A (en) * | 1973-09-04 | 1979-12-25 | Celanese Corporation | Methods for making molded plug and plug valve |
| US5165658A (en) * | 1992-01-07 | 1992-11-24 | M&Fc Holding Company, Inc. | Plastic ball valve ball seal means |
| CN2662024Y (en) * | 2003-08-20 | 2004-12-08 | 孙兆儿 | A polyethylene plastic ball valve for burying |
| CN101586674A (en) * | 2009-06-23 | 2009-11-25 | 广东联塑科技实业有限公司 | A kind of down-mounting type plastic ball-valve |
| CN203442199U (en) * | 2013-07-23 | 2014-02-19 | 永和流体智控股份有限公司 | Refrigerating ball valve |
-
2018
- 2018-08-23 CN CN201810963750.7A patent/CN108916445B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4180542A (en) * | 1973-09-04 | 1979-12-25 | Celanese Corporation | Methods for making molded plug and plug valve |
| US5165658A (en) * | 1992-01-07 | 1992-11-24 | M&Fc Holding Company, Inc. | Plastic ball valve ball seal means |
| CN2662024Y (en) * | 2003-08-20 | 2004-12-08 | 孙兆儿 | A polyethylene plastic ball valve for burying |
| CN101586674A (en) * | 2009-06-23 | 2009-11-25 | 广东联塑科技实业有限公司 | A kind of down-mounting type plastic ball-valve |
| CN203442199U (en) * | 2013-07-23 | 2014-02-19 | 永和流体智控股份有限公司 | Refrigerating ball valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386628A (en) * | 2018-12-24 | 2019-02-26 | 宣琦 | A kind of valve for natural gas transportation |
| CN109578611A (en) * | 2018-12-24 | 2019-04-05 | 宣琦 | Ball valve |
| CN111677903A (en) * | 2020-06-22 | 2020-09-18 | 何浩南 | PE ball valve |
| CN111677904A (en) * | 2020-06-22 | 2020-09-18 | 何浩南 | Ball valve convenient to maintain |
| CN111677903B (en) * | 2020-06-22 | 2021-12-03 | 玉环孙氏暖通设备有限公司 | PE ball valve |
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| Publication number | Publication date |
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| CN108916445B (en) | 2020-01-31 |
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