CN203009855U - Internal-pressure self-sealing type valve cover stop valve - Google Patents
Internal-pressure self-sealing type valve cover stop valve Download PDFInfo
- Publication number
- CN203009855U CN203009855U CN 201220755770 CN201220755770U CN203009855U CN 203009855 U CN203009855 U CN 203009855U CN 201220755770 CN201220755770 CN 201220755770 CN 201220755770 U CN201220755770 U CN 201220755770U CN 203009855 U CN203009855 U CN 203009855U
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- China
- Prior art keywords
- valve
- valve rod
- sealing
- flap
- pressure self
- Prior art date
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- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title abstract description 26
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000011324 bead Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 239000000835 fiber Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012856 packing Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000003678 scratch resistant effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
- 230000007480 spreading Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Taps Or Cocks (AREA)
Abstract
The utility model relates to a valve, and particularly relates to an internal-pressure self-sealing type valve cover stop valve. A valve port in a valve body is provided with a cylindrical valve clack with a conical surface; the valve clack is connected with the tail end of a valve rod; the valve rod is provided with a valve cover; a cylindrical sealing ring is arranged at the joint of the valve cover and the valve body; fillers are arranged between the valve rod and the valve cover; a valve rod nut is arranged at the upper end of the valve rod; thrust ball bearings are arranged on the upper and lower parts of a circular bead of the valve rod nut; the valve rod nut is connected with an electric device through a flat key; and a hand wheel is arranged on the side surface of the electric device. The stop valve adopts pressure self-tight sealing, is simple in structure, high in hardness of a sealing surface, wear-resistant, high-temperature-resistant, good in sealing performance, convenient and easy to operate, small in switching torque, safe to use and long in service life.
Description
Technical field
The utility model relates to a kind of valve, particularly a kind of Pressure seat formula valve gap stop valve.
Background technique
Since China reform and opening-up, national economy obtains rapid growth, has become the main flow of the present industrial development of China with " scientific and technical innovation, autonomous innovation ", and China's industry is progressively to intensive style, energy-saving and emission-reduction, the future development of low-carbon (LC).Stop valve also is pipe valve, is the valve that closure member (flap) moves along the valve seat center line.Because valve rod unlatching or the shutoff stroke of such valve are relatively short, have cutting function very reliably, applied widely, be most popular a kind of valve.The stop valve of commonly using at present, the connection sealing means that adopt the bolt compress gasket more, that screw bolt and nut is occured is loosening when the variation of pipe vibration and medium temperature, pressure, pad is aging in addition, medium is easy to from here to external leakage, and the body cavity space too king-bolt bear larger medium static pressure.In addition, flap adopts Quenching Treatment more, and the coaxality of flap and valve rod is poor, and sealability is undesirable.Simultaneously, be subjected to the impact of fluid resistance, valve open/close moment is also larger.In order to overcome the above problems, R﹠D institution and science and technology in enterprise personnel utilize modern science and technology in constantly research, exploration, and existing stop valve is improved innovation, although obtained technically some progress, still existed the technical barrier that not yet overcomes in practice.
Summary of the invention
The purpose of this utility model is to overcome above deficiency, and a kind of Pressure seat formula valve gap stop valve is provided, and this stop valve adopts the pressure self-tightening sealing, and is simple in structure, sealing surface hardness is high, and is wear-resisting, high temperature resistant, good seal performance, operate lightly, open and close moment little, use safety, the life-span is long.
the technological scheme that its technical problem that solves the utility model adopts is: contain handwheel, Electric actuator, Stem Mut, thrust ball bearing, filler, valve gap, seal ring, valve rod, flap, valve body, the valve port position of valve inner is provided with the cylinder valve flap with conical, flap is connected with valve stem end, valve rod is provided with valve gap, the joint of valve gap and valve body is provided with the cylindrical seal circle, be provided with filler between valve rod and valve gap, the valve rod upper end is provided with Stem Mut, the shoulder place of Stem Mut, thrust ball bearing respectively is housed up and down, Stem Mut is connected by flat key with Electric actuator, the side of Electric actuator is provided with handwheel, formed a kind of Pressure seat formula valve gap stop valve.
The know-why that the utility model adopts is: make valve unimpeded or inaccessible by rotation hand wheel.During use, the handwheel that turns clockwise, valve rod drives flap and moves downward, and flap is subjected to the mechanical compression effect of valve rod, is pressed on valve seat valve closing.Rotate counterclockwise handwheel, valve rod drives flap and moves upward, and flap breaks away from valve seat, valve opening.In the valve lumen, medium can leak along the valve lever clearance place in MEDIA FLOW, and when medium was applied to seal ring, the automatic spreading of seal ring meeting formed sealing, and pressure medium is larger, and what rise is tighter, and sealing effect is better.The packing layer that seals on valve rod adopts flexible ten meters braided packings, and traverse fiber and long grain fiber are alternately placed, and compresses with filler pressing sleeve and hold-down grid, has at utmost guaranteed the sealing of valve body.The seal ring of valve seat is bumped into valve body, and material is identical with valve body, too vertical No. 6 cemented carbide of sealing surface weld deposit department; Flap and valve body adopt same material, and too vertical No. 6 cemented carbide of sealing surface weld deposit department have valve wear-resisting, high temperature resistant when opening or closing, the anti-thermal shock impact, and the scratch-resistant performance, thus extended working life of valve.Flap adopts valve clack cover to be connected with valve rod, and itself is provided with guiding device flap, has guaranteed that the correct of sealing surface of seat coincide, good sealing effect.Respectively be equipped with up and down thrust ball bearing, and pump nozzle be installed at the shoulder place of Stem Mut, but oil injecting lubricating makes valve opening or rapid operation when closing.
The utility model beneficial effect is: this stop valve adopts pressure self-tightening sealing, and simple in structure, sealing surface hardness is high, and is wear-resisting, high temperature resistant, and good seal performance operate lightly, opens and closes moment little, use safety, and the life-span is long.
Description of drawings
The below further describes the utility model in conjunction with the accompanying drawings and embodiments:
It is a kind of Pressure seat formula valve gap stop valve structure schematic diagram in figure.
In the drawings: 1. handwheel, 2. Electric actuator, 3. Stem Mut, 4. thrust ball bearing, 5. filler, 6. valve gap, 7. seal ring, 8. valve rod, 9. flap, 10. valve body.
Embodiment
In the drawings, the valve port position of valve body 10 inside is provided with cylinder valve flap with conical 9, flap 9 is connected with valve rod 8 ends, and valve rod 8 is provided with valve gap 6, and valve gap 6 is provided with cylindrical seal circle 7 with the joint of valve body 10, be provided with filler 5 between valve rod 8 and valve gap 6, valve rod 8 upper ends are provided with Stem Mut 3, and thrust ball bearing 4 respectively is equipped with at the shoulder place of Stem Mut 3 up and down, Stem Mut 3 is connected by flat key with Electric actuator 2, and the side of Electric actuator 2 is provided with handwheel 1.
Make valve unimpeded or inaccessible by rotation hand wheel 1.During use, the handwheel 1 that turns clockwise, valve rod 8 drives flap 9 and moves downward, and flap 9 is subjected to the mechanical compression effect of valve rod 8, is pressed on valve seat valve closing.Rotate counterclockwise handwheel 1, valve rod 8 drives flap 9 and moves upward, and flap 9 breaks away from valve seat, valve opening.In the valve lumen, medium can leak along valve rod 8 gap locations in MEDIA FLOW, and when medium was applied to seal ring 7, the seal ring 7 automatic spreadings of meeting formed sealing, and pressure medium is larger, and what rise is tighter, and sealing effect is better.The filler 5 of sealing on valve rod 8 adopts flexible ten meters braided packings, and traverse fiber and long grain fiber are alternately placed, and compresses with filler pressing sleeve and hold-down grid, has at utmost guaranteed the sealing of valve body.The seal ring of valve seat is bumped into valve body, and material is identical with valve body 10, too vertical No. 6 cemented carbide of sealing surface weld deposit department; Flap 9 and valve body 10 adopts same materials, and too vertical No. 6 cemented carbide of sealing surface weld deposit department have it wear-resisting, and are high temperature resistant, the anti-thermal shock impact, and the scratch-resistant performance, thus extended working life of valve.Flap 9 adopts valve clack cover to be connected with valve rod 8, and flap 9 itself is provided with guiding device, has guaranteed that the correct of sealing surface of seat coincide, good sealing effect.Respectively be equipped with up and down thrust ball bearing 4, and pump nozzle be installed at the shoulder place of Stem Mut 3, but oil injecting lubricating makes valve opening or rapid operation when closing.
Claims (1)
1. Pressure seat formula valve gap stop valve, contain handwheel, Electric actuator, Stem Mut, thrust ball bearing, filler, valve gap, seal ring, valve rod, flap, valve body, it is characterized in that: the valve port position of valve inner is provided with the cylinder valve flap with conical, flap is connected with valve stem end, valve rod is provided with valve gap, the joint of valve gap and valve body is provided with the cylindrical seal circle, be provided with filler between valve rod and valve gap, the valve rod upper end is provided with Stem Mut, the shoulder place of Stem Mut, thrust ball bearing respectively is housed up and down, Stem Mut is connected by flat key with Electric actuator, the side of Electric actuator is provided with handwheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220755770 CN203009855U (en) | 2012-12-30 | 2012-12-30 | Internal-pressure self-sealing type valve cover stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220755770 CN203009855U (en) | 2012-12-30 | 2012-12-30 | Internal-pressure self-sealing type valve cover stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009855U true CN203009855U (en) | 2013-06-19 |
Family
ID=48601452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220755770 Expired - Fee Related CN203009855U (en) | 2012-12-30 | 2012-12-30 | Internal-pressure self-sealing type valve cover stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203009855U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134980A (en) * | 2015-09-28 | 2015-12-09 | 伯特利阀门集团有限公司 | High-performance impact angle valve |
| CN108061182A (en) * | 2016-11-09 | 2018-05-22 | 西派集团有限公司 | A kind of high-pressure large-caliber Bivalved Wafer Check Valves |
-
2012
- 2012-12-30 CN CN 201220755770 patent/CN203009855U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105134980A (en) * | 2015-09-28 | 2015-12-09 | 伯特利阀门集团有限公司 | High-performance impact angle valve |
| CN108061182A (en) * | 2016-11-09 | 2018-05-22 | 西派集团有限公司 | A kind of high-pressure large-caliber Bivalved Wafer Check Valves |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |