CN108953660A - A kind of Bidirectional hard seal floating ball valve - Google Patents
A kind of Bidirectional hard seal floating ball valve Download PDFInfo
- Publication number
- CN108953660A CN108953660A CN201811000532.XA CN201811000532A CN108953660A CN 108953660 A CN108953660 A CN 108953660A CN 201811000532 A CN201811000532 A CN 201811000532A CN 108953660 A CN108953660 A CN 108953660A
- Authority
- CN
- China
- Prior art keywords
- valve
- sphere
- transmission section
- valve seat
- valve rod
- 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
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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
- F16K5/08—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- 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
Abstract
The present invention discloses a kind of Bidirectional hard seal floating ball valve comprising valve deck, valve body, valve seat, valve rod and sphere；Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting the first end of sphere, and away from sphere and seal, the second end of elastic connection valve body or valve deck；Valve rod lower end connects sphere upper end by cylindrical transmission section transmission connection sphere upper end, valve rod lower end linear slide connection transmission section upper end, transmission section lower end linear slide；And valve rod and transmission section between can relative displacement direction, with transmission section sphere between can relative displacement direction be mutually perpendicular to.When valve seat elastic component is deformed because of the variation of medium active force, the present invention deforms the displacement of bring sphere by transmission section compensation elastic component, even if so that sphere is not overlapped with valve rod axis axially, also the adjustment that aperture can be carried out with lesser operational torque achievees the purpose that reduce two way seal ball valve operation torque.
Description
Technical field
The present invention relates to two way seal ball valve technical field, especially a kind of Bidirectional hard seal floating ball valve.
Background technique
Ball valve is widely used in industries such as petroleum, chemical industry, metallurgy and concentrated supplies of heating in the city.Hard sealing float ball
Valve sealing surface has wear-resistant coating, is primarily adapted for use in the operating condition containing granule medium.In order to guarantee sealing performance, it is necessary to spring
Seal load is provided, but spring can be deformed due to the variation of loaded load forces size, sphere displacement is driven to cause to operate torque
Increase, so being generally used one-way sealing.
Performance considerations one for ball valve is that sealing effect will be got well, another is exactly to operate torque to want small.Ball valve is in work
In condition can be with using some one-way sealings, but some are two-way must must all to seal, so torque is excessive, will lead to operate
Difficulty will lead to that type selecting is big, situation at high cost causes economic loss if it is band actuator operation.
Summary of the invention
The object of the present invention is to provide a kind of Bidirectional hard seal floating ball valves, by compensation sphere displacement, two-way close
The operation torque for opening moment can be reduced when envelope.
The technical scheme adopted by the invention is as follows: a kind of Bidirectional hard seal floating ball valve, including valve deck, valve body, valve seat, valve rod
And sphere；
Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting sphere
First end, and away from sphere and seal, the second end of elastic connection valve body or valve deck；
Valve rod lower end passes through cylindrical transmission section transmission connection sphere upper end, valve rod lower end linear slide connection transmission section
Upper end, transmission section lower end linear slide connect sphere upper end；And valve rod and transmission section between can relative displacement direction,
Transmission section sphere between can relative displacement direction be mutually perpendicular to.
The present invention is in use, realize that the spring of elastic connection valve body or valve deck can be with the size variation of medium power in valve seat
And deform, so that sphere generates displacement, conventional hard seal ball valve is being opened if necessary to rotary valve rod Open valve at this time
Open moment, it is necessary to it corrects sphere and the axis of sphere is overlapped with the axis of valve rod, need bigger torque, and it is of the invention
Compensation sphere displacement is saved by transmission, even if be not overlapped still can lesser operation torque unlatching for sphere axis and the axis of valve rod
Valve.
Preferably, between the transmission section upper end and valve rod lower end, and transmission section lower end and sphere upper end
Between, it is slidably connected respectively by male-female engagement.The technique of male-female engagement is relatively simple, easy to assembly.
Preferably, transmission section upper end is equipped with first straight line slot, and valve rod lower end and first straight line slot are adapted simultaneously
It is embedded in the first straight line slot, and can be slided along first straight line slot；The sphere upper end is equipped with second straight line slot, transmission section
Lower end and second straight line slot are adapted and are embedded in the second straight line slot, and can slide along second straight line slot；Described first
The extending direction of straight-line groove and the extending direction of second straight line slot are mutually perpendicular to.It is recessed between transmission section both ends and valve rod and sphere
Convex fit system can also be with this embodiment on the contrary, as groove is arranged in valve rod, and transmission section end is embedded in stem groove, sphere
Additional setting sliding part, insertion transmission save in the groove of lower end, etc..Can be realized the two-part relative displacement direction phase
It is mutually vertically target.
Preferably, transmission section upper end diameter is greater than stem diameter, and transmission section lower end diameter is less than stem diameter.Then pass
Dynamic section is external to be integrally formed staircase structural model, when needing to adjust aperture, can further decrease operational torque.
Preferably, the thrust of self-lubricating low-friction coefficient type is additionally provided between stem outer circumference and the valve rod hole inner wall of valve body
Pad, can further decrease operational torque.
Preferably, left valve seat and right valve seat respectively include the valve seat body being sequentially coaxially arranged from first end to second end,
Sealing ring, pressing ring and spring, sealing ring peripheral part abut valve body or valve deck inner peripheral portion, the two sides of sealing ring abut valve sheet respectively
Body and pressing ring.Wherein spring can be deformed in the variation by medium power, so as to cause sphere displacement, sphere axis runout valve rod
Axis.
Preferably, the spring is disk spring.
Preferably, the sealing ring is made of flexible graphite material, it is ensured that the sealing performance under high temperature.
Beneficial effect
The elasticity setting of valve seat of the present invention be suitable for sphere by medium active force is influenced, realization two way seal, while in valve
When seat elastic component is deformed because of the variation of medium active force, by the setting of transmission section, compensation elastic component (such as disk spring) is loaded
Load forces size variation and deform, and then bring sphere be displaced, even if so that sphere axially be not overlapped with valve rod axis, also can
Enough adjustment that aperture is carried out with lesser operational torque have achieved the purpose that reduce two way seal ball valve operation torque.
Detailed description of the invention
Fig. 1 show ball-valve structure schematic diagram of the present invention；
Fig. 2 show transmission section structure schematic diagram；
The compensation schematic diagram that transmission section is displaced sphere when Fig. 3 show application.
Specific embodiment
It is further described below in conjunction with the drawings and specific embodiments.
Embodiment as shown in Figure 1, Bidirectional hard seal floating ball valve include valve deck 1, valve body 2, valve seat, valve rod 10 and sphere
3；Valve deck 1 is mutually butted with valve body 2, and inside forms 3 accommodating cavity of sphere.
Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting
The first end of sphere 3, and away from sphere and seal, the second end of elastic connection valve body or valve deck；As shown in figure 1, the of left valve seat
Two end elasticity abut valve deck 1, and the second end elasticity of right valve seat abuts valve body 2.
With reference to Fig. 1, left valve seat and right valve seat respectively include the valve seat body being sequentially coaxially arranged from first end to second end
7, sealing ring 6, pressing ring 5 and spring 4,6 peripheral part of sealing ring abuts valve body or valve deck inner peripheral portion, the two sides of sealing ring 6 are supported respectively
Connect valve body 7 and pressing ring 5.Wherein spring be disk spring, can preferably adapt to sphere application when by medium power influenced.
It can be deformed in the variation by medium power, so as to cause sphere displacement, sphere axis runout valve rod axis.Sealing ring is using soft
Property graphite material is made, it is ensured that the sealing performance under high temperature.
10 lower end of valve rod passes through 8 transmission connection 3 upper end of sphere of cylindrical transmission section, 10 lower end linear slide of valve rod
8 upper ends of connection transmission section, transmission 8 lower end linear slides of section connect 3 upper end of sphere；And between valve rod 10 and transmission section 8
Can relative displacement direction, with transmission section sphere between can relative displacement direction be mutually perpendicular to.
Referring to figs. 1 and 2, between transmission 8 upper ends of section and 10 lower end of valve rod, and transmission section lower end and ball
Between body upper end, it is slidably connected respectively by male-female engagement.With reference to Fig. 2,8 upper ends 82 of transmission section are equipped with first straight line
Slot 81, in conjunction with Fig. 3,10 lower end of valve rod and first straight line slot 81 are adapted and are embedded in the first straight line slot, and can be along the
The sliding of one straight-line groove；The sphere upper end is equipped with second straight line slot, and transmission section lower end 83 and second straight line slot are adapted simultaneously
It is embedded in the second straight line slot, and can be slided along second straight line slot；The extending direction and second straight line of the first straight line slot
The extending direction of slot is mutually perpendicular to.
8 both ends of transmission section can also be different with the present embodiment from the male-female engagement mode between valve rod 10 and sphere 3, such as valve rod
Groove is set, transmission section end is embedded in stem groove, and sliding part is additionally arranged in sphere, it is embedded in transmission section lower end groove,
Deng.It is mutually perpendicular to can be realized the two-part relative displacement direction as target.
Transmission section 82 diameter of upper end is greater than 10 diameter of valve rod, and transmission section 83 diameter of lower end is less than 10 diameter of valve rod.Then
Transmission section is external to be integrally formed staircase structural model, when needing to adjust aperture, can further decrease operational torque.
The thrust pad of self-lubricating low-friction coefficient type is additionally provided between 10 periphery of valve rod and the valve rod hole inner wall of valve body 1, it can
Further decrease operational torque.Meanwhile being driven section upper end periphery is cylindrical shape, when assembly, is packed into below the valve rod hole of valve body
Hole in, in order to guarantee that transmission section and relative displacement between sphere and valve rod, transmission section and setting at valve body cooperation are appropriate
Gap.
The disk spring 4 of right side valve seat, pressing ring 5, sealing ring 6, valve seat 7 are first put into valve body 2 in assembly by the present embodiment
Valve seat orifice in, then 9 sets of thrust pad on valve rod 10, valve rod 10 is passed through from the valve rod hole of valve body 2, will transmission section it is 8 suitable
First straight line slot put into valve bodies 2 on the valve rod, then by the second straight line slot of sphere 3 along transmission section 8, left side valve seat
Disk spring 4, pressing ring 5, sealing ring 6, valve seat 7 put into the valve seat orifice of valve deck 1, with stud/nut by valve deck 1 and valve body 2
It is connected.The then backout in disassembly.
In use, realized in valve seat elastic connection valve body or valve deck disk spring can with the size variation of medium power and
Deformation is at this time opening conventional hard seal ball valve if necessary to rotary valve rod Open valve so that sphere generates displacement
Moment, it is necessary to it corrects sphere and the axis of sphere is overlapped with the axis of valve rod, need bigger torque, and the present invention is logical
Transmission section compensation sphere displacement is crossed, even if be not overlapped with the axis of valve rod still can lesser operation torque opening valve for sphere axis
Door.
To sum up, valve seat of the present invention elasticity setting be suitable for sphere by medium active force is influenced, realization two way seal,
Simultaneously when valve seat elastic component is deformed because of the variation of medium active force, by the setting of transmission section, compensation elastic component is (such as dish bullet
Spring) loaded load forces size variation and deform, and then bring sphere is displaced, even if so that sphere is not weighed with valve rod axis axially
It closes, the adjustment of aperture can be also carried out with lesser operational torque, achieved the purpose that reduce two way seal ball valve operation torque.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. a kind of Bidirectional hard seal floating ball valve, including valve deck, valve body, valve seat, valve rod and sphere；It is characterized in that:
Valve seat includes the left valve seat and right valve seat for being symmetrically disposed on sphere two sides, and left valve seat and right valve seat respectively include abutting sphere
First end, and away from sphere and seal, the second end of elastic connection valve body or valve deck；
Valve rod lower end passes through cylindrical transmission section transmission connection sphere upper end, valve rod lower end linear slide connection transmission section
Upper end, transmission section lower end linear slide connect sphere upper end；And valve rod and transmission section between can relative displacement direction,
Transmission section sphere between can relative displacement direction be mutually perpendicular to.
2. Bidirectional hard seal floating ball valve according to claim 1, it is characterized in that: under transmission section upper end and valve rod
Between end, and between transmission section lower end and sphere upper end, it is slidably connected respectively by male-female engagement.
3. Bidirectional hard seal floating ball valve according to claim 2, it is characterized in that: transmission section upper end is equipped with first
Straight-line groove, valve rod lower end and first straight line slot are adapted and are embedded in the first straight line slot, and can be sliding along first straight line slot
It is dynamic；The sphere upper end is equipped with second straight line slot, and transmission section lower end and second straight line slot are adapted and are embedded in described second
In straight-line groove, and it can be slided along second straight line slot；The extending direction of the first straight line slot and the extending direction of second straight line slot
It is mutually perpendicular to.
4. Bidirectional hard seal floating ball valve according to claim 3, it is characterized in that: transmission section upper end diameter is greater than valve rod
Diameter, transmission section lower end diameter are less than stem diameter.
5. Bidirectional hard seal floating ball valve according to claim 1, it is characterized in that: in the valve rod hole of stem outer circumference and valve body
The thrust pad of self-lubricating low-friction coefficient type is additionally provided between wall.
6. Bidirectional hard seal floating ball valve according to claim 1, it is characterized in that: left valve seat and right valve seat respectively include from
Valve seat body, sealing ring, pressing ring and the spring that first end is sequentially coaxially arranged to second end, sealing ring peripheral part abut valve body or
The two sides of valve deck inner peripheral portion, sealing ring abut valve body and pressing ring respectively.
7. Bidirectional hard seal floating ball valve according to claim 6, it is characterized in that: the spring is disk spring.
8. Bidirectional hard seal floating ball valve according to claim 6, it is characterized in that: the sealing ring uses soft graphite material
Material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000532.XA CN108953660A (en) | 2018-08-30 | 2018-08-30 | A kind of Bidirectional hard seal floating ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000532.XA CN108953660A (en) | 2018-08-30 | 2018-08-30 | A kind of Bidirectional hard seal floating ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108953660A true CN108953660A (en) | 2018-12-07 |
Family
ID=64474700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811000532.XA Pending CN108953660A (en) | 2018-08-30 | 2018-08-30 | A kind of Bidirectional hard seal floating ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108953660A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120709A (en) * | 2019-05-13 | 2020-05-08 | 浙江苍南仪表集团股份有限公司 | Novel IC card flow cut-off valve |
| CN112081978A (en) * | 2019-06-14 | 2020-12-15 | 浙江三花制冷集团有限公司 | Control valve |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547300U (en) * | 2009-06-26 | 2010-08-11 | 昆山维萨阀门有限公司 | Metal hard-seal ball valve |
| CN105351560A (en) * | 2015-12-10 | 2016-02-24 | 沈阳恒屹实业有限公司 | Full-floating ball rigidity seal ball valve |
| CN206988466U (en) * | 2017-07-06 | 2018-02-09 | 四川赛尔阀门制造有限公司 | A kind of self sealss floating ball valve |
-
2018
- 2018-08-30 CN CN201811000532.XA patent/CN108953660A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201547300U (en) * | 2009-06-26 | 2010-08-11 | 昆山维萨阀门有限公司 | Metal hard-seal ball valve |
| CN105351560A (en) * | 2015-12-10 | 2016-02-24 | 沈阳恒屹实业有限公司 | Full-floating ball rigidity seal ball valve |
| CN206988466U (en) * | 2017-07-06 | 2018-02-09 | 四川赛尔阀门制造有限公司 | A kind of self sealss floating ball valve |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120709A (en) * | 2019-05-13 | 2020-05-08 | 浙江苍南仪表集团股份有限公司 | Novel IC card flow cut-off valve |
| CN111120709B (en) * | 2019-05-13 | 2021-11-30 | 浙江苍南仪表集团股份有限公司 | Novel IC card flow cut-off valve |
| CN112081978A (en) * | 2019-06-14 | 2020-12-15 | 浙江三花制冷集团有限公司 | Control valve |
| CN112081978B (en) * | 2019-06-14 | 2022-10-18 | 浙江三花商用制冷有限公司 | Control 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 | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 215324 No. 18 Jinxi Road, Jinxi Town, Kunshan City, Suzhou City, Jiangsu Province Applicant after: Kunshan Weisa Valve Co., Ltd. Address before: 215324 No. 18 Jinxi Road, Jinxi Town, Kunshan City, Suzhou City, Jiangsu Province Applicant before: Kunshan Weisa Valve Co., Ltd. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181207 |