CN105587928A - Sealing structure between valve cover and valve rod - Google Patents
Sealing structure between valve cover and valve rod Download PDFInfo
- Publication number
- CN105587928A CN105587928A CN201610142482.3A CN201610142482A CN105587928A CN 105587928 A CN105587928 A CN 105587928A CN 201610142482 A CN201610142482 A CN 201610142482A CN 105587928 A CN105587928 A CN 105587928A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- valve
- valve rod
- packing ring
- valve gap
- 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
- 238000007789 sealing Methods 0.000 title abstract description 8
- 238000012856 packing Methods 0.000 claims description 37
- 238000010276 construction Methods 0.000 claims description 14
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 5
- 239000010962 carbon steel Substances 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 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
- F16K5/02—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 conical surfaces; Packings therefor
- F16K5/0257—Packings
- F16K5/0285—Packings spindle sealing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to the technical field of ball valves and discloses a sealing structure between a valve cover and a valve rod. The sealing structure between the valve cover and the valve rod comprises a valve body, a valve rod and the valve cover, wherein an air clearance is formed between the valve rod and the valve body, a supporting ring is arranged on the outer wall of the valve rod, the valve rod is sleeved with a filling material ring, the filling material ring is positioned above the supporting ring and in the position of the air clearance, a first assembling groove is formed in the inner wall of the filling material ring, a second assembling groove is formed in the outer ring wall of the filling material ring, O-shaped rings are respectively assembled in the first assembling groove and the second assembling groove, and an axial boss is formed in the valve cover and faces to the air clearance. The sealing structure provided by the invention has the beneficial effects as follows: the sealing structure can ensure that the valve cover is not in contact with a medium, and the manufacturing cost of the valve cover is lowered remarkably.
Description
Technical field
The present invention relates to ball valve technical field, be specifically related to the hermetically-sealed construction between a kind of valve gap and valve rod.
Background technology
Ball valve is that opening and closing element (spheroid) is driven by valve rod, and the valve rotating around ball valve axis. Ball valve was come out the 1950's, and along with scientific and technical develop rapidly, updating of production technology and product structure, in the 50 short years, has developed rapidly and become a kind of main valve class. In the west flourishing country of industry, the use of ball valve is constantly risen year by year.
Between fixing ball valve valve gap and valve rod, need to fill seal and ensure sealing. And valve gap bottom directly contacts with medium, in the time that medium has corrosivity, need to adopt corrosion-resistant material. The material require of valve gap possesses corrosion resistance thus, easily causes manufacturing cost significantly to raise.
Summary of the invention
The object of the present invention is to provide the hermetically-sealed construction between a kind of valve gap and valve rod, sealing structure can make valve gap not with medium contact.
For achieving the above object, the invention provides following technical scheme:
Hermetically-sealed construction between a kind of valve gap and valve rod, comprise valve body, valve rod and valve gap, above-mentioned valve rod is through above-mentioned valve body, above-mentioned valve gap is sheathed on above-mentioned valve rod, above-mentioned valve gap is bolted above-mentioned valve body, between above-mentioned valve rod and above-mentioned valve body, be formed with space, above-mentioned valve rod outer wall is provided with support ring, above-mentioned valve stem sleeve is provided with packing ring, this packing ring is positioned at above-mentioned support ring top, above-mentioned packing ring is positioned at above-mentioned gap, above-mentioned packing ring inwall is provided with the first assembling groove, above-mentioned packing ring outer wall is provided with the second assembling groove, in above-mentioned the first assembling groove and the second assembling groove, be respectively fitted with O shape circle, above-mentioned valve gap is provided with axial protuberance, this axial protuberance is towards gap.
Preferably, above-mentioned packing ring is corrosion-resistant filling ring.
Preferably, above-mentioned valve gap is carbon steel valve gap.
Preferably, above-mentioned valve stem sleeve is provided with thrust pad, and this thrust pad is between above-mentioned support ring and packing ring.
Preferably, above-mentioned packing ring inwall is provided with the 3rd assembling groove, is equipped with O shape circle in the 3rd assembling groove.
Preferably, above-mentioned axial protuberance outer wall is equipped with wound gasket.
Preferably, above-mentioned packing ring corresponding with support ring end face cover the end face of above-mentioned support ring.
Operation principle of the present invention is: owing to all there being O shape circle inside and outside packing ring, O shape circle is for sealing, therefore, corrosive medium can only contact with packing ring, and can not contact with the valve gap of packing ring top, so only need packing ring to adopt resistant material, valve gap can adopt common carbon steel material. The structure of valve gap and the packing ring one of comparing, cost of manufacture reduces greatly, and valve aperture is larger, and the effect reducing costs is more remarkable.
Beneficial effect of the present invention is: hermetically-sealed construction can make valve gap not with medium contact, because of medium, the making material of valve gap is not had to higher requirement, reduced significantly the cost of manufacture of valve gap.
Brief description of the drawings
Fig. 1 is schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is further described. Following examples are only for technical scheme of the present invention is more clearly described, and can not limit the scope of the invention with this.
The concrete technical scheme of implementing of the present invention is:
As shown in Figure 1, hermetically-sealed construction between a kind of valve gap 2 and valve rod 6, comprise valve body 4, valve rod 6 and valve gap 2, above-mentioned valve rod 6 is through above-mentioned valve body 4, above-mentioned valve gap 2 is sheathed on above-mentioned valve rod 6, above-mentioned valve gap 2 connects above-mentioned valve body 4 by bolt 1, between above-mentioned valve rod 6 and above-mentioned valve body 4, be formed with space, above-mentioned valve rod 6 outer walls are provided with support ring, above-mentioned valve rod 6 is arranged with packing ring 8, this packing ring 8 is positioned at above-mentioned support ring top, above-mentioned packing ring 8 is positioned at above-mentioned gap, above-mentioned packing ring 8 inwalls are provided with the first assembling groove, above-mentioned packing ring 8 outer walls are provided with the second assembling groove, in above-mentioned the first assembling groove and the second assembling groove, be respectively fitted with O shape circle 7, above-mentioned valve gap 2 is provided with axial protuberance 9, this axial protuberance 9 is towards gap.
Above-mentioned packing ring 8 is corrosion-resistant filling ring 8.
Above-mentioned valve gap 2 is carbon steel valve gap 2.
Above-mentioned valve rod 6 is arranged with thrust pad 5, and this thrust pad 5 is between above-mentioned support ring and packing ring 8.
Above-mentioned packing ring 8 inwalls are provided with the 3rd assembling groove, are equipped with O shape circle 7 in the 3rd assembling groove.
Above-mentioned axial protuberance 9 outer walls are equipped with wound gasket 3.
Above-mentioned packing ring 8 corresponding with support ring end face cover the end face of above-mentioned support ring.
Operation principle of the present invention is: owing to all there being O shape circle 7 inside and outside packing ring 8, therefore, corrosive medium can only contact with packing ring 8, and can not contact with the valve gap 2 of packing ring 8 tops, so only need packing ring 8 to adopt resistant material, valve gap 2 can adopt common carbon steel material. The structure of valve gap 2 and packing ring 8 one of comparing, cost of manufacture reduces greatly, and valve aperture is larger, and the effect reducing costs is more remarkable.
Beneficial effect of the present invention is: hermetically-sealed construction can make valve gap 2 not with medium contact, because of medium, the making material of valve gap 2 is not had to higher requirement, reduced significantly the cost of manufacture of valve gap 2.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. the hermetically-sealed construction between a valve gap and valve rod, comprise valve body, valve rod and valve gap, above-mentioned valve rod is through above-mentioned valve body, above-mentioned valve gap is sheathed on above-mentioned valve rod, above-mentioned valve gap is bolted above-mentioned valve body, it is characterized in that, between above-mentioned valve rod and above-mentioned valve body, be formed with space, above-mentioned valve rod outer wall is provided with support ring, above-mentioned valve stem sleeve is provided with packing ring, this packing ring is positioned at above-mentioned support ring top, above-mentioned packing ring is positioned at above-mentioned gap, above-mentioned packing ring inwall is provided with the first assembling groove, above-mentioned packing ring outer wall is provided with the second assembling groove, in above-mentioned the first assembling groove and the second assembling groove, be respectively fitted with O shape circle, above-mentioned valve gap is provided with axial protuberance, this axial protuberance is towards gap.
2. the hermetically-sealed construction between valve gap according to claim 1 and valve rod, is characterized in that, above-mentioned packing ring is corrosion-resistant filling ring.
3. the hermetically-sealed construction between valve gap according to claim 2 and valve rod, is characterized in that, above-mentioned valve gap is carbon steel valve gap.
4. the hermetically-sealed construction between valve gap according to claim 3 and valve rod, is characterized in that, above-mentioned valve stem sleeve is provided with thrust pad, and this thrust pad is between above-mentioned support ring and packing ring.
5. the hermetically-sealed construction between valve gap according to claim 4 and valve rod, is characterized in that, above-mentioned packing ring inwall is provided with the 3rd assembling groove, is equipped with O shape circle in the 3rd assembling groove.
6. the hermetically-sealed construction between valve gap according to claim 5 and valve rod, is characterized in that, above-mentioned axial protuberance outer wall is equipped with wound gasket.
7. the hermetically-sealed construction between valve gap according to claim 6 and valve rod, is characterized in that, above-mentioned packing ring corresponding with support ring end face cover the end face of above-mentioned support ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142482.3A CN105587928A (en) | 2016-03-14 | 2016-03-14 | Sealing structure between valve cover and valve rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610142482.3A CN105587928A (en) | 2016-03-14 | 2016-03-14 | Sealing structure between valve cover and valve rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105587928A true CN105587928A (en) | 2016-05-18 |
Family
ID=55927725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610142482.3A Pending CN105587928A (en) | 2016-03-14 | 2016-03-14 | Sealing structure between valve cover and valve rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105587928A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171049Y (en) * | 1992-12-13 | 1994-07-06 | 王乃俊 | Double sealing conceal rod type valve |
| CN2656738Y (en) * | 2003-12-02 | 2004-11-17 | 上海艾维科阀门有限公司 | Spring sealing sluice valve |
| CN2872022Y (en) * | 2006-01-26 | 2007-02-21 | 安徽铜都阀门有限公司 | Axial-sealed valve with floating valve rod |
| JP2010090964A (en) * | 2008-10-07 | 2010-04-22 | Sumitomo Chemical Co Ltd | Rotary valve |
| CN102330842A (en) * | 2011-10-22 | 2012-01-25 | 无锡智能自控工程有限公司 | Valve rod sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
| CN202302272U (en) * | 2011-10-22 | 2012-07-04 | 无锡智能自控工程有限公司 | Valve rod sealing structure for copious-cooling butterfly valve under ultralow-temperature operation conditions |
| CN202418874U (en) * | 2011-11-28 | 2012-09-05 | 北京航科航天石化氟塑泵阀有限公司 | Double-seal stop valve |
| CN203628010U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Pressure self-sealing packing structure |
-
2016
- 2016-03-14 CN CN201610142482.3A patent/CN105587928A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2171049Y (en) * | 1992-12-13 | 1994-07-06 | 王乃俊 | Double sealing conceal rod type valve |
| CN2656738Y (en) * | 2003-12-02 | 2004-11-17 | 上海艾维科阀门有限公司 | Spring sealing sluice valve |
| CN2872022Y (en) * | 2006-01-26 | 2007-02-21 | 安徽铜都阀门有限公司 | Axial-sealed valve with floating valve rod |
| JP2010090964A (en) * | 2008-10-07 | 2010-04-22 | Sumitomo Chemical Co Ltd | Rotary valve |
| CN102330842A (en) * | 2011-10-22 | 2012-01-25 | 无锡智能自控工程有限公司 | Valve rod sealing structure for cryogenic butterfly valve under ultralow temperature working condition |
| CN202302272U (en) * | 2011-10-22 | 2012-07-04 | 无锡智能自控工程有限公司 | Valve rod sealing structure for copious-cooling butterfly valve under ultralow-temperature operation conditions |
| CN202418874U (en) * | 2011-11-28 | 2012-09-05 | 北京航科航天石化氟塑泵阀有限公司 | Double-seal stop valve |
| CN203628010U (en) * | 2013-11-20 | 2014-06-04 | 天津百利展发集团有限公司 | Pressure self-sealing packing structure |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160518 |
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| RJ01 | Rejection of invention patent application after publication |