CN108757987A - A kind of band protective case ball valve - Google Patents
A kind of band protective case ball valve Download PDFInfo
- Publication number
- CN108757987A CN108757987A CN201810624722.2A CN201810624722A CN108757987A CN 108757987 A CN108757987 A CN 108757987A CN 201810624722 A CN201810624722 A CN 201810624722A CN 108757987 A CN108757987 A CN 108757987A
- Authority
- CN
- China
- Prior art keywords
- valve
- protective case
- ball valve
- pullover
- 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
Links
- 230000001681 protective effect Effects 0.000 title claims abstract description 35
- 230000009471 action Effects 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000012856 packing Methods 0.000 claims description 9
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 2
- 150000001336 alkenes Chemical class 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000003628 erosive effect Effects 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008569 process Effects 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
- 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
- F16K5/201—Special arrangements for separating the sealing faces or for pressing them together for plugs with spherical surfaces with the housing or parts of the housing mechanically pressing the seal against the 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
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- 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
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
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 band protective case ball valves, it is characterised in that：It is additionally provided with protective case in the inlet side of body cavity, resetting spring, annular reseting groove is equipped on the inlet side inner wall of body cavity, one end of protective case is equipped with set tail, the set tail stretches into the reseting groove, the other end of protective case is equipped with the pullover of tubular structure, the outer circle of the pullover is matched with the inner wall of valve seat, the outer end face of the pullover is equipped with curved surfaces, resetting spring is integrally placed in reseting groove, one end of resetting spring is connected with set tail, the other end of resetting spring is connected with reseting groove end face, protective case can move under the action of resetting spring along the direction of the ball valve horizontal axis, and the curved surfaces of pullover can be made to be close to spherical seal surface, the axis of the upper valve rod deviates a certain distance H in the horizontal direction with ball valve horizontal axis, it is good with valve seat protection against erosion, service life is long, safe advantage.
Description
Technical field
The present invention relates to a kind of ball valves, more particularly, to a kind of band protective case ball valve.
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 valve body 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 close to valve seat
Cover 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 band protective case ball valve.
The present invention realizes by following technical solution：
A kind of band protective case ball valve, including：Valve body, hemisphere, valve seat, filler, gland, connecting bracket, upper valve rod, lower valve rod
And bottom end cover, valve body middle part upper end are equipped with connecting flange and packing groove, filler is fixedly installed in packing groove, connection branch by gland
Frame is mounted on by standard fasteners at the connecting flange, and upper valve rod upper end is equipped with the keyway being connect with external driver device, on
Valve rod lower end is stretched into body cavity across packing groove and is connect with hemisphere, and hemisphere is placed in body cavity, and hemisphere external surface is set
There are spherical seal surface, valve seat to be made of non-metallic plastic material, the axis of valve seat is consistent with the horizontal axis of the ball valve, valve seat
Equipped with the sealing surface of seat for forming sealing with spherical seal surface, hemisphere is driven by upper valve rod and around 90 degree of rotation of the upper valve rod axis
Turn, to be turned on and off the ball valve, bottom end cover is fixedly mounted on valve body lower end by standard bolt, and lower valve rod is arranged in valve body
Lower part, lower valve rod and upper valve rod axis having the same, lower valve rod upper end are connected with hemisphere lower end, lower valve rod lower face and
Bottom end cover upper surface is connected, it is characterised in that：It is additionally provided with protective case, resetting spring in the inlet side of body cavity, in valve body
The inlet side inner wall of inner cavity is equipped with annular reseting groove, and one end of protective case is equipped with set tail, which stretches into the reseting groove, protects
The other end of set is equipped with the pullover of tubular structure, and the outer circle of the pullover is matched with the inner wall of valve seat, and the outer end face of the pullover is set
There are curved surfaces, resetting spring to be integrally placed in reseting groove, one end of resetting spring is connected with set tail, resetting spring it is another
End is connected with an end face of reseting groove, and protective case can be under the action of resetting spring along the direction of the ball valve horizontal axis
It is mobile, and the curved surfaces of pullover can be made to be close to spherical seal surface, the axis and ball valve horizontal axis of the upper valve rod are in level
Deviate a certain distance H in direction.
Further, the pullover is internally provided with magnet, and the hemisphere is internally provided with valve magnet, this magnet with
The valve magnet has the effect of attracting.
Further, the value of the distance H is 4 ~ 8mm.
Further, O-ring seal is equipped between the lower outer bar and valve body lower portion.
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.
Further, the material of the compressed spring is stainless steel.
The advantage of the invention is that：During ball valve is turned on and off, thrust of the protective case in resetting spring, seat magnetic
Iron is moved under the suction of ball magnet along ball valve export direction, and the pullover of protective case stretches out valve seat a certain distance, ball
The medium of valve inlet side will not directly wash away sealing surface of seat, have the advantages that prolong the service life.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram with protective case ball valve of the present invention.
Fig. 2 is a kind of E-E cut-away views with protective case ball valve Fig. 1 of the present invention.
Specific implementation mode
According to Fig. 1,2 it is found that a kind of band protective case ball valve, including：Valve body 1, hemisphere 5, valve seat 6, filler 9, gland
10, connecting bracket 11, upper valve rod 7, lower valve rod 4 and bottom end cover 12,1 middle part upper end of valve body are equipped with connecting flange and packing groove, fill out
Material 9 is fixedly installed in packing groove by gland 10, and connecting bracket 11 is mounted on by standard fasteners at the connecting flange, upper valve
7 upper end of bar is equipped with the keyway being connect with external driver device, and 1 inner cavity of valve body and hemisphere are stretched into 7 lower end of upper valve rod across packing groove
Body 5 connects, and hemisphere 5 is placed in 1 inner cavity of valve body, and 5 outer surface of hemisphere is equipped with spherical seal surface, and valve seat 6 is by non-metallic plastic material
Material is made, and the axis of valve seat 6 is consistent with the horizontal axis of the ball valve, and valve seat 6 is equipped with the valve that sealing is formed with spherical seal surface
Seat sealing surface, hemisphere 5 is driven by upper valve rod 7 and around 7 axis of upper valve rod, 90 degree of rotation, to be turned on and off the ball valve,
Bottom end cover 12 is fixedly mounted on 1 lower end of valve body by standard bolt, and lower valve rod 4 is arranged in 1 lower part of valve body, lower valve rod 4 and upper valve
7 axis having the same of bar, 4 upper end of lower valve rod are connected with 5 lower end of hemisphere, 4 lower face of lower valve rod and 12 upper end of bottom end cover
Face is connected, and the inlet side in 1 inner cavity of valve body is additionally provided with protective case 3, resetting spring 2, on the inlet side inner wall of 1 inner cavity of valve body
Equipped with annular reseting groove, one end of protective case 3 is equipped with set tail, which stretches into the reseting groove, and the other end of protective case 3 is equipped with pipe
The outer circle of the pullover of formula structure, the pullover is matched with the inner wall of valve seat 6, and the outer end face of the pullover is equipped with curved surfaces, resets
Spring 2 is integrally placed in reseting groove, and one end of resetting spring 2 is connected with set tail, the other end of resetting spring 2 and reseting groove
One end face is connected, and protective case 3 can move under the action of resetting spring 2 along the direction of the ball valve horizontal axis, and can
The curved surfaces of pullover are made to be close to spherical seal surface, axis and the ball valve horizontal axis of the upper valve rod 7 deviate in the horizontal direction
The value of a certain distance H, the distance H are 4 ~ 8mm, and O-ring seal, the pressure are equipped between the lower outer bar and valve body lower portion
The material of contracting spring is stainless steel.
When the valve is closed from open state, upper valve rod is rotated, hemisphere is rotated with upper valve rod, due to upper valve rod 7
Axis and ball valve horizontal axis deviate a certain distance H values in the horizontal direction, hemisphere is during rotation, outside hemisphere
The disengaging sealing surface of seat of the spherical seal surface that surface is equipped with gradually, spherical seal surface will not be formed with sealing surface of seat and be rubbed,
Protective case moves under the suction of the thrust of resetting spring, seat magnet and ball magnet along ball valve export direction simultaneously, protects
The pullover of sheath stretches out valve seat a certain distance, and the medium of ball valve inlet side will not directly wash away sealing surface of seat, to effectively
Prevent medium from washing away valve seat, extend the service life of valve seat.
Similarly, when the valve is opened from closed state, hemisphere is rotated with upper valve rod, process of the sphere in rotation
In, spherical seal surface that hemisphere external surface is equipped with gradually close to sealing surface of seat, spherical seal surface will not be with valve base sealing
Face forms friction, and protective case is under the thrust of hemisphere external surface, and the pullover of protective case is close to spherical seal surface, effectively
It prevents medium from washing away valve seat, extends the service life of valve 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 (7)
1. a kind of band protective case ball valve, including：Valve body, hemisphere, valve seat, filler, gland, connecting bracket, upper valve rod, lower valve rod
And bottom end cover, valve body middle part upper end are equipped with connecting flange and packing groove, filler is fixedly installed in packing groove, connection branch by gland
Frame is mounted on by standard fasteners at the connecting flange, and upper valve rod upper end is equipped with the keyway being connect with external driver device, on
Valve rod lower end is stretched into body cavity across packing groove and is connect with hemisphere, and hemisphere is placed in body cavity, and hemisphere external surface is set
There are spherical seal surface, valve seat to be made of non-metallic plastic material, the axis of valve seat is consistent with the horizontal axis of the ball valve, valve seat
Equipped with the sealing surface of seat for forming sealing with spherical seal surface, hemisphere is driven by upper valve rod and around 90 degree of rotation of the upper valve rod axis
Turn, to be turned on and off the ball valve, bottom end cover is fixedly mounted on valve body lower end by standard bolt, and lower valve rod is arranged in valve body
Lower part, lower valve rod and upper valve rod axis having the same, lower valve rod upper end are connected with hemisphere lower end, lower valve rod lower face and
Bottom end cover upper surface is connected, it is characterised in that：It is additionally provided with protective case, resetting spring in the inlet side of body cavity, in valve body
The inlet side inner wall of inner cavity is equipped with annular reseting groove, and one end of protective case is equipped with set tail, which stretches into the reseting groove, protects
The other end of set is equipped with the pullover of tubular structure, and the outer circle of the pullover is matched with the inner wall of valve seat, and the outer end face of the pullover is set
There are curved surfaces, resetting spring to be integrally placed in reseting groove, one end of resetting spring is connected with set tail, resetting spring it is another
End is connected with an end face of reseting groove, and protective case can be under the action of resetting spring along the direction of the ball valve horizontal axis
It is mobile, and the curved surfaces of pullover can be made to be close to spherical seal surface, the axis and ball valve horizontal axis of the upper valve rod are in level
Deviate a certain distance H in direction.
2. a kind of band protective case ball valve according to claim 1, it is characterised in that：The pullover is internally provided with magnet,
The hemisphere is internally provided with valve magnet, this magnet has the effect of attracting with the valve magnet.
3. a kind of band protective case ball valve according to claim 1, it is characterised in that：The value of the distance H is 4 ~ 8mm.
4. a kind of band protective case ball valve according to claim 1, it is characterised in that：Between the lower outer bar and valve body lower portion
Equipped with O-ring seal.
5. a kind of band protective case ball valve according to claim 1, it is characterised in that：The seat material is polytetrafluoroethyl-ne
Alkene.
6. a kind of band protective case ball valve according to claim 1, it is characterised in that：The valve body is made of left and right valve body,
Left and right valve body is fixedly installed togather by standard fasteners.
7. a kind of band protective case ball valve according to claim 1, it is characterised in that：The material of the compressed spring is stainless
Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810624722.2A CN108757987A (en) | 2018-06-16 | 2018-06-16 | A kind of band protective case ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810624722.2A CN108757987A (en) | 2018-06-16 | 2018-06-16 | A kind of band protective case ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108757987A true CN108757987A (en) | 2018-11-06 |
Family
ID=63978359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810624722.2A Pending CN108757987A (en) | 2018-06-16 | 2018-06-16 | A kind of band protective case ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108757987A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2302471A1 (en) * | 1975-02-27 | 1976-09-24 | Regelungstech & Automation Ges | Magnetic valve for high speed flow - has variable diameter through port and flat or conical closing plate with seal |
| JPS63289385A (en) * | 1987-05-19 | 1988-11-25 | Ulvac Corp | Valve for vacuum processing device |
| CN2784686Y (en) * | 2004-12-10 | 2006-05-31 | 开维喜阀门集团有限公司 | Soft and hard sealing combined valve for ash, slag and mortar |
| CN204153202U (en) * | 2014-09-28 | 2015-02-11 | 浙江成高阀门有限公司 | dust-proof ball valve |
| CN205190886U (en) * | 2015-11-30 | 2016-04-27 | 三明高中压阀门有限公司 | Novel ball valve |
| KR20170054669A (en) * | 2015-11-10 | 2017-05-18 | 대우조선해양 주식회사 | Ball valve with holding seat |
-
2018
- 2018-06-16 CN CN201810624722.2A patent/CN108757987A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2302471A1 (en) * | 1975-02-27 | 1976-09-24 | Regelungstech & Automation Ges | Magnetic valve for high speed flow - has variable diameter through port and flat or conical closing plate with seal |
| JPS63289385A (en) * | 1987-05-19 | 1988-11-25 | Ulvac Corp | Valve for vacuum processing device |
| CN2784686Y (en) * | 2004-12-10 | 2006-05-31 | 开维喜阀门集团有限公司 | Soft and hard sealing combined valve for ash, slag and mortar |
| CN204153202U (en) * | 2014-09-28 | 2015-02-11 | 浙江成高阀门有限公司 | dust-proof ball valve |
| KR20170054669A (en) * | 2015-11-10 | 2017-05-18 | 대우조선해양 주식회사 | Ball valve with holding seat |
| CN205190886U (en) * | 2015-11-30 | 2016-04-27 | 三明高中压阀门有限公司 | Novel ball valve |
Non-Patent Citations (2)
| Title |
|---|
| 机械工业部仪器仪表工业局: "《调节阀机械装校工艺学》", 31 August 1987, 机械工业出版社 * |
| 黄日新: "《工业专用阀门手册》", 31 March 1995, 机械工业出版社 * |
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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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181106 |
|
| RJ01 | Rejection of invention patent application after publication |