CN206972965U - A kind of double graphite hard seal ball valves of low torque all-metal - Google Patents
A kind of double graphite hard seal ball valves of low torque all-metal Download PDFInfo
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- CN206972965U CN206972965U CN201720712342.5U CN201720712342U CN206972965U CN 206972965 U CN206972965 U CN 206972965U CN 201720712342 U CN201720712342 U CN 201720712342U CN 206972965 U CN206972965 U CN 206972965U
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Abstract
The utility model provides a kind of low torque all-metal double graphite hard seal ball valves, including valve body, bonnet, valve rod, steel ball and valve seat, the valve body is arranged on the inside of bonnet, steel ball is provided with the inside of the valve body, the top of the steel ball is engaged with valve rod, flexible graphite packing and establishment graphite packing are provided with the outside of the valve rod, turbine is connected with the top of the valve rod, gland is provided with below the turbine, valve seat is provided between the valve body and bonnet, carbon seal ring is provided with the inside of the valve seat, gasket ring, pressure ring and disc spring, the carbon seal ring is provided with two, gasket ring is provided between two carbon seal rings, the pressure ring is arranged on the right side of carbon seal ring, disc spring is provided with the right side of the pressure ring；Compared with prior art, the utility model has following beneficial effect：It is ingenious in design, the market competitiveness is improved, has reached purpose simple in construction and reasonable in design.
Description
Technical field
The utility model is a kind of double graphite hard seal ball valves of low torque all-metal, belongs to machinery equipment field.
Background technology
Ball valve sealing pair（That is sealing surface of seat and ball seal face）Material is paired into the ball valve of metal to metal.Ball valve
Structure type is divided into floating ball type and fixed ball, and type of attachment is flange connection, is welded to connect and is threadedly coupled.
Hard seal ball valve, manual cast steel hard seal ball valve body surface uses advanced spraying technology, by various differences
The processing of working condition, maximum hardness is up to HRC78.The processing of sealing surface of seat, maximum hardness is up to HRC72.Spheroid and valve
Seat carries out pairing grinding, and all sealing areas of the whole sealing surface of ball valve pass through precise finiss.Be suitable for HTHP water,
Steam, oil, coal, fiber, consistence and Korrosionsmedium, and the medium with particle.Metal seal ball valve have float ball and
Fixed two kinds of structural metal valve cup rings of ball and sphere-contact, by act on uniform spring-load on valve cup ring make valve cup ring and
Sphere forms sealing.
Because the effect of spring-load expands auxiliary seal, the load of the sealing springs between valve body and valve seat is realized
It is enough to provide between valve seat and spheroid and reliably seals, under lower pressure, can be designed between sealing surface of seat and spheroid close
Seal fat injected system.
Seal ball-valve structure of the prior art is single, is not easy to promote.
Utility model content
In view of the deficienciess of the prior art, to be to provide a kind of double graphite of low torque all-metal firmly close for the utility model purpose
Blocking valve, to solve the problems mentioned in the above background technology.
To achieve these goals, the utility model is to realize by the following technical solutions：A kind of low torque is entirely golden
The double graphite hard seal ball valves of category, including valve body, bonnet, valve rod, steel ball and valve seat, the valve body are arranged on the inside of bonnet, institute
State and steel ball is provided with the inside of valve body, the top of the steel ball is engaged with valve rod, and the outside of the valve rod sets flexible stone
Black filler and establishment graphite packing, are connected with turbine at the top of the valve rod, gland are provided with below the turbine,
Valve seat is provided between the valve body and bonnet, carbon seal ring, gasket ring, pressure ring and disc spring are provided with the inside of the valve seat,
The carbon seal ring is provided with two, gasket ring is provided between two carbon seal rings, the pressure ring is arranged on carbon seal ring
Right side, be provided with disc spring on the right side of the pressure ring.
Further, the establishment graphite packing is provided with two, and flexible graphite packing is arranged on two establishment graphite packings
Between.
Further, stuffing-box is provided with the top of the valve body, the gland is engaged by bolts and nuts, after
And on the stuffing-box of valve body.
Further, the carbon seal ring, gasket ring, pressure ring and disc spring form a sealing mechanism.
Further, two carbon seal rings are in 0.3 ~ 0.6mm of precompressed.
Further, the surface roughness of valve rod is between Ra0.1 ~ 0.3.
The beneficial effects of the utility model：A kind of double graphite hard seal ball valves of low torque all-metal of the present utility model, two
Road sealing ring coordinates the long-armed design of disc spring, reduces the influence power of deformation or error to starting force, so as to meet minimum sealing ratio
Sealing force minimum can be realized in the case of pressure, filler uses flexible graphite packing and works out the Combination Design of graphite packing,
The assembly technology of locking torque is controlled by single pretension, ensures the sealing and torque stability of axis filler.
Brief description of the drawings
By reading the detailed description made with reference to the following drawings to non-limiting example, other spies of the present utility model
Sign, objects and advantages will become more apparent upon：
Fig. 1 is a kind of structural representation of the double graphite hard seal ball valves of low torque all-metal of the utility model；
Fig. 2 is that a kind of carbon seal ring of the double graphite hard seal ball valves of low torque all-metal of the utility model and gasket ring coordinate
Schematic diagram；
In figure：1. bonnet, 2. valve bodies, 3. steel balls, 4. carbon seal rings, 5. valve rods, 6. valve seats, 7. establishment graphite packings,
8. flexible graphite packing, 9. glands, 10. worm gears, 11. gasket rings, 12. pressure rings, 13. disc springs.
Embodiment
Technological means, creation characteristic, reached purpose and effect to realize the utility model are easy to understand, below
With reference to embodiment, the utility model is expanded on further.
Fig. 1 to Fig. 2 is referred to, the utility model provides a kind of technical scheme：A kind of double graphite of low torque all-metal are firmly close
Blocking valve, including valve body 2, bonnet 1, valve rod 5, steel ball 3 and valve seat 6, valve body 2 are arranged on the inner side of bonnet 1, the inner side of valve body 2
Steel ball 3 is provided with, the top of steel ball 3 is engaged with valve rod 5, and the outside of valve rod 5 is provided with flexible graphite packing 8 and establishment stone
Black filler 7, the top of valve rod 5 are connected with turbine 10, and the lower section of turbine 10 is provided with gland 9, between valve body 2 and bonnet 1
Valve seat 6 is provided with, the inner side of valve seat 6 is provided with carbon seal ring 4, gasket ring 11, pressure ring 12 and disc spring 13, and carbon seal ring 4 is set
There are two, gasket ring 11 is provided between two carbon seal rings 4, pressure ring 12 is arranged on the right side of carbon seal ring 4, pressure ring 12
Right side is provided with disc spring 13.
Work out graphite packing 7 and be provided with two, flexible graphite packing 8 is arranged between two establishment graphite packings 7, passes through list
The assembly technology of individual pretension control locking torque, ensure the sealing and torque stability of axis filler.
The top of valve body 2 is provided with stuffing-box, and gland 9 is engaged by bolts and nuts, then installed in valve body 2
On stuffing-box.
Carbon seal ring 4, gasket ring 11, pressure ring 12 and disc spring 13 form a sealing mechanism.
Two carbon seal rings 4 are in 0.3 ~ 0.6mm of precompressed, coordinate 13 long-armed design of disc spring, reduce deformation or error to first
The influence power of beginning power, so as to which sealing force minimum can be realized in the case where meeting minimum seal pressure.
Steel ball 3 and valve seat 6 are installed additional using grinding technics, and between 0.003 ~ 0.007, surface roughness exists out of roundness
Between Ra0.1 ~ 0.3.
Valve rod 5 is installed additional using rolling technology, and the surface roughness of valve rod 5 is between Ra0.1 ~ 0.3.
As one embodiment of the present utility model：The assembly technology of the present apparatus is：
The oil or dust that attach on gland 9 are wiped over totally, then to ensure that gland 9 being capable of smooth loading valve
In the stuffing-box of body 2；
The oil or dust that are attached in the stuffing-box of valve body 2 are wiped over totally；
The oil or dust that are attached on valve rod 5 are wiped over totally, while confirmed on valve rod 5 without scuffing or evidence of corrosion；
An establishment graphite packing 7 is initially charged with, is then locked with torque wrench, will first to maximum thrust 40MPa
53 reciprocal 90 ° of switch motions of valve rod, the thrust for working out graphite packing 7 is unclamped, returns the thrust of establishment graphite packing 7
Zero, then thrust 35MPa is given, lock first establishment graphite packing 7；
Then flexible graphite packing 8 is sequentially loaded into, finally loads establishment graphite packing 7, until filler assembling is completed.
As one embodiment of the present utility model：A kind of double graphite hard seal balls of low torque all-metal of the present utility model
Valve, two seals circle coordinate 13 long-armed design of disc spring, reduce the influence power of deformation or error to starting force, so as to minimum in satisfaction
Sealing force minimum can be realized in the case of seal pressure, filler is using flexible graphite packing 8 and the group of establishment graphite packing 7
Design is closed, the assembly technology of locking torque is controlled by single pretension, ensures the sealing and torque stability of axis filler.
The advantages of general principle and principal character of the present utility model and the utility model has been shown and described above, for
For those skilled in the art, it is clear that the utility model is not limited to the details of above-mentioned one exemplary embodiment, and without departing substantially from this
In the case of the spirit or essential attributes of utility model, the utility model can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the utility model is by institute
Attached claim rather than described above limit, it is intended that will fall in the implication and scope of the equivalency of claim
All changes are included in the utility model.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of double graphite hard seal ball valves of low torque all-metal, including valve body, bonnet, valve rod, steel ball and valve seat, its feature
It is：The valve body is arranged on the inside of bonnet, and steel ball is provided with the inside of the valve body, and top and the valve rod of the steel ball match
Close, flexible graphite packing and establishment graphite packing be provided with the outside of the valve rod, turbine is connected with the top of the valve rod,
Gland is provided with below the turbine, valve seat is provided between the valve body and bonnet, is provided with the inside of the valve seat
Carbon seal ring, gasket ring, pressure ring and disc spring, the carbon seal ring are provided with two, are provided between two carbon seal rings
Gasket ring, the pressure ring are arranged on the right side of carbon seal ring, disc spring are provided with the right side of the pressure ring.
A kind of 2. double graphite hard seal ball valves of low torque all-metal according to claim 1, it is characterised in that：The establishment
Graphite packing is provided with two, and flexible graphite packing is arranged between two establishment graphite packings.
A kind of 3. double graphite hard seal ball valves of low torque all-metal according to claim 1, it is characterised in that：The valve body
Top be provided with stuffing-box, the gland is engaged by bolts and nuts, then on the stuffing-box of valve body.
A kind of 4. double graphite hard seal ball valves of low torque all-metal according to claim 1, it is characterised in that：The graphite
Sealing ring, gasket ring, pressure ring and disc spring form a sealing mechanism.
A kind of 5. double graphite hard seal ball valves of low torque all-metal according to claim 1, it is characterised in that：Two graphite
Sealing ring is in 0.3 ~ 0.6mm of precompressed.
A kind of 6. double graphite hard seal ball valves of low torque all-metal according to claim 1, it is characterised in that：The table of valve rod
Surface roughness is between Ra0.1 ~ 0.3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720712342.5U CN206972965U (en) | 2017-06-19 | 2017-06-19 | A kind of double graphite hard seal ball valves of low torque all-metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720712342.5U CN206972965U (en) | 2017-06-19 | 2017-06-19 | A kind of double graphite hard seal ball valves of low torque all-metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206972965U true CN206972965U (en) | 2018-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720712342.5U Active CN206972965U (en) | 2017-06-19 | 2017-06-19 | A kind of double graphite hard seal ball valves of low torque all-metal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061781A (en) * | 2017-06-19 | 2017-08-18 | 中山铁王流体控制设备有限公司 | A kind of double graphite hard seal ball valves of low torque all-metal |
-
2017
- 2017-06-19 CN CN201720712342.5U patent/CN206972965U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061781A (en) * | 2017-06-19 | 2017-08-18 | 中山铁王流体控制设备有限公司 | A kind of double graphite hard seal ball valves of low torque all-metal |
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