CN205504064U - Soft or hard double sealing ball valve - Google Patents
Soft or hard double sealing ball valve Download PDFInfo
- Publication number
- CN205504064U CN205504064U CN201620304184.5U CN201620304184U CN205504064U CN 205504064 U CN205504064 U CN 205504064U CN 201620304184 U CN201620304184 U CN 201620304184U CN 205504064 U CN205504064 U CN 205504064U
- Authority
- CN
- China
- Prior art keywords
- soft
- valve seat
- valve
- spheroid
- seal
- 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.)
- Active
Links
Landscapes
- Taps Or Cocks (AREA)
Abstract
The utility model relates to a soft or hard double sealing ball valve, a soft or hard double sealing ball valve, it includes valve body, disk seat and spheroid, the valve body endotheca is equipped with the spheroid the valve body is equipped with the disk seat with spheroidal contact department, be equipped with a runner on the spheroid, disk seat and valve body are corresponding be equipped with the opening on the position at runner both ends, the disk seat is equipped with seal structure with spheroidal linking department, seal structure includes first sealing washer, second sealing washer, a metal sealing element and the 2nd metal sealing element, first sealing washer is embedded on the disk seat, and one end is exposed and is being pasted spheroid surface, it is embedded on the disk seat that first sealing washer is being hugged closely to the second sealing washer, and one end is exposed and is being pasted spheroid surface, a metal sealing element is close to first sealing washer setting on the disk seat surface, the 2nd metal sealing element is close to the second sealing washer and sets up on the disk seat surface, realizes the soft or hard double containment of ball valve.
Description
Technical field
This utility model relates to a kind of valve, particularly to a kind of soft or hard double-seal ball valve.
Background technology
Ball valve, defined in standard GB/T21465-2008 " valve term " be: opening and closing element (spheroid) is driven by valve rod, and around
The valve that ball valve axis rotates.Also can be used for regulation and the control of fluid, the most firmly seal its V-type core of V-type ball valve
And there is between the metal seat valve of pile-up welding hard alloy the strongest shearing force, be particularly well-suited to fibre-bearing, small solid material etc.
Medium.And multi-pass ball valve not only can control the interflow of medium, shunting and the switching flowed on pipeline flexibly, also may be used simultaneously
Close arbitrary passage and make two other passage be connected.
Existing ball valve, mostly uses a kind of seal form, and fire prevention degree is the highest.
Utility model content
In order to overcome the deficiency of background technology, this utility model provides a kind of soft or hard double-seal ball valve.
This utility model be the technical scheme is that a kind of soft or hard double-seal ball valve, and it includes valve body, valve seat and ball
Body, is arranged with spheroid in valve body, be provided with valve seat in the contact position of described valve body Yu spheroid, and described spheroid is provided with a runner, institute
Stating valve seat and valve body and be provided with opening on the position at corresponding described runner two ends, described valve seat is provided with sealing with the joining place of spheroid
Structure, described sealing structure includes the first sealing ring, the second sealing ring, the first metal seal and the second metal seal, institute
Stating the first sealing ring to be embedded on valve seat, one end is exposed and is against spherome surface, and the first sealing ring is close to by described second sealing ring
Being embedded on valve seat, one end is exposed and is against spherome surface, and described first metal seal is close to the first sealing ring and is arranged on valve
Seating face, described second metal seal is close to the second sealing ring and is arranged on valve base surface.
Described first sealing ring is fluorubber soft seal circle.
Described second sealing ring is PTFE soft seal circle.
Described first metal seal, the second metal seal all use lip type cutting edge.
It is provided with air tightness compensation arrangement between described valve seat and valve body.
Described air tightness compensation arrangement includes the groove being arranged on valve body and the helical spring being arranged on valve seat, described recessed
The open horizontal of groove is arranged towards valve seat, and described helical spring is pressed in groove in advance.
Described valve seat and valve body joining place are sequentially provided with soft graphite fire proof seal circle and O RunddichtringO.
Described valve seat is provided with oiling passage, and described oiling passage includes first passage and second channel, and described first leads to
One end, road connects air, and the other end connects with second channel, and described second channel other end opening is positioned at the second metal seal
Lower section, and towards spheroid.
The beneficial effects of the utility model are: this utility model utilizes the first sealing ring and the second sealing ring to carry out low temperature
Soft seal under environment, utilizes the first metal seal and the second metal seal to carry out firmly sealing under hot environment, in fact
The soft or hard double containment of existing ball valve, simultaneously as the first sealing ring and the second sealing ring are soft seal, its material is the easiest
Damage, therefore design the first sealing ring and the second sealing ring are positioned at the first metal seal and the centre of the second metal seal, profit
Soft seal is protected not to be destroyed with hard sealing of metal.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is enlarged drawing of the present utility model in Fig. 1.
1-valve body, 11-groove, 2-valve seat, 21-helical spring, 22-soft graphite fire proof seal circle, 23-O RunddichtringO,
24-oiling passage, 241-first passage, 242-second channel, 3-spheroid, 41-the first sealing ring, 42-the second sealing ring, 43-
First metal seal, 44-the second metal seal, 5-bonnet, 51-the first flexible graphite gasket, 6-bottom flange, 61-
Two flexible graphite gaskets, 7-pressing plate, 71-the 3rd flexible graphite gasket, 72-flexible graphite packing, 8-valve rod, 81-the 4th is flexible
Graphite pad.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model embodiment is described further:
As it can be seen, a kind of soft or hard double-seal ball valve, it includes valve body 1, valve seat 2 and spheroid 3, is arranged with in valve body 1
Spheroid 3, is provided with valve seat 2 in the contact position of described valve body 1 with spheroid 3, and described spheroid 3 is provided with a runner, described valve seat 2 and valve
Body 1 is provided with opening on the position at corresponding described runner two ends, and described valve seat 2 is provided with sealing structure, institute with the joining place of spheroid 3
State sealing structure and include the first sealing ring the 41, second sealing ring the 42, first metal seal 43 and the second metal seal 44, institute
Stating the first sealing ring 41 to be embedded on valve seat 2, one end is exposed and is against spheroid 3 surface, and described second sealing ring 42 is close to first
Sealing ring 41 is embedded on valve seat 2, and one end is exposed and against spheroid 3 surface, and it is close that described first metal seal 43 is close to first
Seal 41 is arranged on valve seat 2 surface, and described second metal seal 44 is close to the second sealing ring 42 and is arranged on valve seat 2 surface,
Utilize the first sealing ring 41 and the second sealing ring 42 to carry out the soft seal under low temperature environment, utilize the first metal seal 43 He
Second metal seal 44 carries out the hard sealing under hot environment, it is achieved the soft or hard double containment of ball valve, simultaneously as first is close
Seal 41 and the second sealing ring 42 are soft seal, and its material is at high temperature easily damaged, therefore design the first sealing ring 41 and second
Sealing ring 42 is positioned at the first metal seal 43 and centre of the second metal seal 44, utilizes the hard sealing of metal to protect soft
Seal and be not destroyed.
Described first sealing ring 41 is fluorubber soft seal circle, and fluorubber material has the advantage that:
1, chemical stability is good, it is possible to the corrosiveness of resistance to strong acid, highly basic, strong oxidizer and organic solvent；
2, heat stability, can be high temperature resistant；
3, mechanical performance, its ductility and compressibility are good.
Described second sealing ring 42 is PTFE soft seal circle, and PTFE material has the advantage that:
1, chemical stability is good, it is possible to the corrosiveness of resistance to strong acid, highly basic, strong oxidizer and organic solvent；
2, heat stability, can be high temperature resistant；
3, having anti-attrition, coefficient of friction is extremely low, while sealing, and rub resistance, it is not necessary to often change；
4, having self lubricity, almost all of stickum all can not adhere to its surface up, therefore can protect
Demonstrate,prove nearest sealing property.
Described first metal seal the 43, second metal seal 44 all uses lip type cutting edge, and lip type cutting edge is similar to one
The boss of individual projection, contacts with the direct of spheroid 3 relative to valve seat 2, and lip type cutting edge is much smaller with the contact surface of spheroid 3, ball
Body 3 surface is arc, and contact area is the least, and contact gap reduces, snugly can be the best, spheroid 3 moment of torsion meeting in rotary course
Reduce.
It is provided with air tightness compensation arrangement between described valve seat 2 and valve body 1, is used for compensating soft seal and hard sealing, makes ball valve
Better tightness.
Described air tightness compensation arrangement includes the groove 11 being arranged on valve body 1 and the helical spring 21 being arranged on valve seat 2,
The open horizontal of described groove 11 is arranged towards valve seat 2, and described helical spring 21 is pressed in groove 11 in advance, preload screw spring
21 act on valve body 1 and valve seat 2, there is a precompressed elastic force, and this precompressed elastic force is applied on valve seat 2, to valve seat 2 one
The individual power away from valve body 1, i.e. promotes valve seat 2 to contact further with spheroid 3, makes the better tightness of ball valve.
Bonnet, 5, bottom flange 6, pressing plate 7 and valve rod 8, described bonnet, 5 is connected with valve body 1 upper end after running through valve rod 8, institute
Stating bottom flange 6 to be connected with valve body 1 lower end, described pressing plate 7 is arranged on the upper end of described bonnet, 5, described bonnet, 5 sidewall with
The joining place of valve body 1 upper end sidewall is provided with the first flexible graphite gasket 51, at described bottom flange 6 sidewall and valve body 1 lower end sidewall
Joining place be provided with the second flexible graphite gasket 61, protected by the first flexible graphite gasket 51 and the second flexible graphite gasket 61
Fire line between card valve body 1 and bonnet, 5, valve body 1 and bottom flange 6, it is ensured that the safe operation of ball valve.
Pressing plate 7 is connected with bonnet, 5 by bolt, and described pressing plate 7 lower surface is provided with the joining place of bonnet, 5 upper surface
3rd flexible graphite gasket 71, processes in order to the fire prevention of ball valve, arranges O RunddichtringO, in order to the encapsulation process of ball valve simultaneously.
Owing to each joining place may connect ball valve inside and air, described pressing plate 7 sidewall sets with the joining place of valve rod 8 sidewall
Flexible graphite packing 72, described valve rod 8 upper surface is had to be provided with the 4th flexible graphite gasket with the joining place of bottom flange 6 lower surface
81, described valve seat 2 and valve body 1 joining place are provided with soft graphite fire proof seal circle 22 and O RunddichtringO 23, all preventing in order to ball valve
Fire processes, and prevents outside burning things which may cause a fire disaster from damaging ball valve, meanwhile, may also set up O RunddichtringO at each joining place, as encapsulation process,
Prevent ball valve from internal leakage.
Described valve seat 2 is provided with oiling passage 24, and described oiling passage includes first passage 241 and second channel 242, institute
Stating first passage 241 one end and connect air, the other end connects with second channel 242, described second channel 242 other end opening position
In the lower section of the second metal seal 44, and towards spheroid 3, utilize this oiling passage 24, can again ball valve leakage time, carry out tight
Anxious sealing, it is also possible to as oiling, carry out the lubrication on surface between valve seat 2 and valve body 1.
It is only preferred implementation of the present utility model above in association with the embodiment described by accompanying drawing, and not to this practicality
The restriction of novel protection domain, any improvement done based on this utility model spirit all ought to protect model at this utility model
Within enclosing.
Claims (8)
1. a soft or hard double-seal ball valve, it is characterised in that: it includes valve body (1), valve seat (2) and spheroid (3), valve body (1)
Inside being arranged with spheroid (3), be provided with valve seat (2) in the contact position of described valve body (1) Yu spheroid (3), described spheroid (3) is provided with one
Runner, described valve seat (2) and valve body (1) are provided with opening on the position at corresponding described runner two ends, it is characterised in that: described
Valve seat (2) is provided with sealing structure with the joining place of spheroid (3), and described sealing structure includes the first sealing ring (41), the second sealing
Circle (42), the first metal seal (43) and the second metal seal (44), described first sealing ring (41) is embedded in valve seat (2)
On, one end is exposed and is against spheroid (3) surface, and described second sealing ring (42) is close to the first sealing ring (41) and is embedded in valve seat
(2) on, one end is exposed and is against spheroid (3) surface, and described first metal seal (43) is close to the first sealing ring (41) and arranges
On valve seat (2) surface, described second metal seal (44) is close to the second sealing ring (42) and is arranged on valve seat (2) surface.
Soft or hard double-seal ball valve the most according to claim 1, it is characterised in that: described first sealing ring (41) is fluorine rubber
Jiao Ruanmifengquan.
Soft or hard double-seal ball valve the most according to claim 1, it is characterised in that: described second sealing ring (42) is PTFE
Soft seal circle.
Soft or hard double-seal ball valve the most according to claim 1, it is characterised in that: described first metal seal (43),
Second metal seal (44) all uses lip type cutting edge.
Soft or hard double-seal ball valve the most according to claim 1, it is characterised in that: between described valve seat (2) and valve body (1)
It is provided with air tightness compensation arrangement.
Soft or hard double-seal ball valve the most according to claim 5, it is characterised in that: described air tightness compensation arrangement includes arranging
Groove (11) on valve body (1) and the helical spring (21) being arranged on valve seat (2), the open horizontal court of described groove (11)
Arranging to valve seat (2), described helical spring (21) is pressed in groove (11) in advance.
Soft or hard double-seal ball valve the most according to claim 1, it is characterised in that: described valve seat (2) is connected with valve body (1)
Place is sequentially provided with soft graphite fire proof seal circle (22) and O RunddichtringO (23).
Soft or hard double-seal ball valve the most according to claim 1, it is characterised in that: described valve seat (2) is provided with oiling and leads to
Road (24), described oiling passage includes first passage (241) and second channel (242), and described first passage (241) one end connects
Air, the other end connects with second channel (242), and described second channel (242) other end opening is positioned at the second metal seal
(44) lower section, and towards spheroid (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620304184.5U CN205504064U (en) | 2016-04-13 | 2016-04-13 | Soft or hard double sealing ball valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620304184.5U CN205504064U (en) | 2016-04-13 | 2016-04-13 | Soft or hard double sealing ball valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205504064U true CN205504064U (en) | 2016-08-24 |
Family
ID=56712712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620304184.5U Active CN205504064U (en) | 2016-04-13 | 2016-04-13 | Soft or hard double sealing ball valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205504064U (en) |
-
2016
- 2016-04-13 CN CN201620304184.5U patent/CN205504064U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205479583U (en) | In -band leaks super low temperature check valve of function | |
| CN205173525U (en) | Submarine pipeline pair gate valve | |
| CN2926698Y (en) | Fixed membrane metal sealed spherical valve | |
| CN205504064U (en) | Soft or hard double sealing ball valve | |
| CN201539596U (en) | Sealing pair for hard sealed ball valve | |
| CN205715756U (en) | A kind of novel anti-gray valve seat construction of Coal Chemical Industry ball valve | |
| CN103775674A (en) | Low-temperature spherical valve | |
| CN202719181U (en) | Hard seal ball valve | |
| CN202418635U (en) | PFA-lined butterfly valve | |
| CN201705982U (en) | High-temperature wear-resistant ball valve | |
| CN103672011A (en) | Cryogenic top entry type fireproof ball valve with composite heat dissipation disc valve cover | |
| CN205504062U (en) | Ball valve fire resistive construction | |
| CN201069001Y (en) | Zero leakage ultra-high pressure fixed ball-valve | |
| CN202790658U (en) | Valve seat of fixed ball valve | |
| CN203670883U (en) | Ball valve with spring energy accumulating sealing structure | |
| CN103994274A (en) | Corrugated pipe plug valve | |
| CN104154265B (en) | A kind of roof-mounted cryogenic ball valve of closed type that mixes | |
| CN204852428U (en) | Titanium material ball valve sealed firmly | |
| CN205504061U (en) | Fire resistive construction's ball valve seating | |
| CN203718011U (en) | Low-temperature ball valve | |
| CN204805604U (en) | Ultra -low temperature metal ball valve that floats sealed firmly | |
| CN204756079U (en) | Full welded fastening formula ball valve | |
| CN105202201A (en) | High-sealability dust-proof butterfly valve | |
| CN204755991U (en) | Eccentric hemisphere valve of upper assembling type | |
| CN203594821U (en) | Top-mounted fireproof copious-cooling ball valve with composite heat-dissipation disc valve deck |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |