CN203948666U - There is the stop valve of double-level-metal seal bellows - Google Patents
There is the stop valve of double-level-metal seal bellows Download PDFInfo
- Publication number
- CN203948666U CN203948666U CN201420394344.0U CN201420394344U CN203948666U CN 203948666 U CN203948666 U CN 203948666U CN 201420394344 U CN201420394344 U CN 201420394344U CN 203948666 U CN203948666 U CN 203948666U
- Authority
- CN
- China
- Prior art keywords
- valve
- sealing plate
- sealing
- stem passage
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 82
- 238000005242 forging Methods 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
- Diaphragms And Bellows (AREA)
- Lift Valve (AREA)
Abstract
The utility model discloses a kind of stop valve with double-level-metal seal bellows, comprise valve body, flap and valve rod, top at valve body is provided with valve stem passage, be provided with ladder boss at the middle part of valve stem passage, top in valve stem passage is provided with plane of inclination, be provided with lower bellows in the outside of lower valve rod, top at lower bellows is provided with sealing plate, sealing plate above be provided with sealing clamp, sealing clamp is fixed by screws on sealing plate, be provided with bellows at the top of sealing clamp, top at upper bellows is provided with top sealing plate, above top sealing plate, be provided with top seal pressing plate, top seal pressing plate is fixed on top sealing plate by top set screw and the end of top seal pressing plate is fixed on the top of valve stem passage by fixing bolt.Of the present utility model simple in structure, can effectively eliminate the sealing between valve rod and valve stem passage, anti-vibration performance is good, can effectively prevent that it from producing elastic strain, sealing good stability.
Description
Technical field
The utility model belongs to stop valve technical field, is specifically related to a kind of stop valve with double-level-metal seal bellows.
Background technique
Stop valve is a kind of conventional valve body, the stop valve of prior art is generally made up of valve body, flap and valve rod, and complete sealing by filler and Gland between valve body and valve rod, although it has sealability to a certain extent, but adopt filler and Gland sealing, the absorption of its vibration proof, swing can be more poor, can affect to a certain extent its sealability, simultaneously prior art all only has one deck seal, easily in use make and leaking, affect safety in utilization, applicability is affected, and is difficult to meet the demand in market.
Summary of the invention
The purpose of this utility model is to provide a kind of simple in structure, stop valve with double-level-metal seal bellows that sealability is stable.
The technological scheme that realizes the utility model object is a kind of stop valve with double-level-metal seal bellows, comprise valve body and be arranged on the flap in described valve body, at the valve rod at described flap top, the bottom of described valve rod is fixed on the top at flap by fixing pin, top at described valve body is provided with valve stem passage, described valve stem passage and described valve body are wholely set, described valve rod comprises lower valve rod and upper valve rod, be provided with ladder boss at the middle part of described valve stem passage, and valve stem passage bottom diameter is less than the setting of valve stem passage upper-end inner diameter, top in described valve stem passage is provided with plane of inclination, described lower valve rod is arranged between flap and ladder boss, be provided with lower bellows in the outside of described lower valve rod, top at described lower bellows is provided with sealing plate, described sealing plate above be provided with sealing clamp, described sealing plate lower end be bottom little be obliquely installed and described sealing plate plane of inclination be connected on ladder boss, described sealing clamp is fixed by screws on sealing plate, the bottom of described upper valve rod is connected with sealing plate and with the top of described lower valve rod through described sealing clamp, be provided with bellows at the top of described sealing clamp, the top of bellows is provided with top sealing plate on described, above described top sealing plate, be provided with top seal pressing plate, to be that bottom is little be obliquely installed and the plane of inclination of described top sealing plate is connected on the plane of inclination of valve stem passage described top sealing plate, described top seal pressing plate is fixed on top sealing plate by top set screw and the end of described top seal pressing plate is fixed on the top of valve stem passage by fixing bolt.
Top at described upper valve rod is also provided with handwheel, and described handwheel is connected with upper valve rod by Stem Mut.
Described valve body is that this body stainless steel forgings difficult to understand forms through solid solution.
Described sealing plate, sealing clamp, top sealing plate and top seal pressing plate be metallic material and make.
The height of described valve stem passage is 2 times of valve body length.
The utlity model has positive effect: of the present utility model simple in structure, be provided with double-ply bellows, double-layer seal plate and double-layer seal pressing plate, can effectively eliminate the sealing between valve rod and valve stem passage, and adopt double-ply bellows can effectively prevent that flap is affected by medium motion and the vibration and the swing that cause, anti-vibration performance is good, and the double-layer seal pressing plate of double-layer seal plate, can effectively prevent that it from producing elastic strain, improve to a certain extent sealing stability, adopt screw to be fixed simultaneously, can regulate the slackness between sealing plate and sealing clamp by screw as required, effectively improve sealing stability, applicability is good, practical, valve body is that this body stainless steel forgings difficult to understand forms through solid solution simultaneously, and at the bottom of its impurity density, applicability is wide.
Brief description of the drawings
For content of the present utility model is more likely to be clearly understood, according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail below, wherein:
Fig. 1 is structural representation of the present utility model.
Embodiment
(embodiment 1)
Fig. 1 has shown a kind of embodiment of the present utility model, and wherein Fig. 1 is structural representation of the present utility model.
See Fig. 1, a kind of stop valve with double-level-metal seal bellows, comprise valve body 1 and be arranged on the flap 2 in described valve body 1, at the valve rod 3 at described flap 2 tops, the bottom of described valve rod 3 is fixed on the top at flap 2 by fixing pin 4, be provided with valve stem passage 5 at the top of described valve body 1, described valve stem passage 5 is wholely set with described valve body 1, described valve rod 3 comprises lower valve rod 31 and upper valve rod 32, be provided with ladder boss 51 at the middle part of described valve stem passage 5, and valve stem passage 5 bottom diameters are less than the setting of valve stem passage upper-end inner diameter, be provided with plane of inclination 52 at the top of described valve stem passage 5, described lower valve rod 31 is arranged between flap 2 and ladder boss 51, be provided with lower bellows 6 in the outside of described lower valve rod 31, be provided with sealing plate 7 at the top of described lower bellows 6, above described sealing plate 7, be provided with sealing clamp 8, to be that bottom is little be obliquely installed and the plane of inclination of described sealing plate 7 is connected on ladder boss 51 in described sealing plate 7 lower ends, described sealing clamp 8 is fixed on sealing plate 7 by screw 9, the bottom of described upper valve rod 32 is connected with sealing plate 7 and with the top of described lower valve rod 31 through described sealing clamp 8, be provided with bellows 10 at the top of described sealing clamp 8, the top of bellows 10 is provided with top sealing plate 11 on described, above described top sealing plate 11, be provided with top seal pressing plate 12, described top sealing plate 11 for bottom little be obliquely installed and the plane of inclination of described top sealing plate 11 is connected on the plane of inclination 52 of valve stem passage 5, described top seal pressing plate 12 is fixed on top sealing plate 11 by top set screw 13 and the end of described top seal pressing plate 12 is fixed on the top of valve stem passage 5 by fixing bolt 14.
Top at described upper valve rod 32 is also provided with handwheel 15, and described handwheel 15 is connected with upper valve rod 32 by Stem Mut 16.
Described valve body 1 is that this body stainless steel forgings difficult to understand forms through solid solution.
Described sealing plate 7, sealing clamp 8, top sealing plate 11 and top seal pressing plate 12 are metallic material and make.
The height of described valve stem passage 5 is 2 times of valve body 1 length.
When use, rotation hand wheel, make upper valve rod drive lower valve rod upstream or downstream, thereby compress bellows drives flap to complete opens or disconnects, and in use, sealing between its valve body and bellows realizes by the sealing between valve body and sealing clamp, adopt bimetal hard sealing structure, seal pressure between valve body and sealing plate is to be arranged on screw on sealing clamp by adjusting to carry out pretightening force and regulate, seal pressure reaches between air-proof condition valve body and bellows just realizes sealing, and sealability is strong; Screw presses on the pretightening force on sealing plate by sealing clamp, produces resiliently deformable stored energy lock screw between causing two sealing plates, prevent valve because of generation of vibration screw lax, stability in use is good.
Obviously, above-described embodiment of the present utility model is only for the utility model example is clearly described, and is not the restriction to mode of execution of the present utility model.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also giving exhaustive to all mode of executions.And these belong to apparent variation or the variation that connotation of the present utility model extends out and still belong to protection domain of the present utility model.
Claims (5)
1. one kind has the stop valve of double-level-metal seal bellows, comprise valve body and be arranged on the flap in described valve body, at the valve rod at described flap top, the bottom of described valve rod is fixed on the top at flap by fixing pin, it is characterized in that: the top at described valve body is provided with valve stem passage, described valve stem passage and described valve body are wholely set, described valve rod comprises lower valve rod and upper valve rod, be provided with ladder boss at the middle part of described valve stem passage, and valve stem passage bottom diameter is less than the setting of valve stem passage upper-end inner diameter, top in described valve stem passage is provided with plane of inclination, described lower valve rod is arranged between flap and ladder boss, be provided with lower bellows in the outside of described lower valve rod, top at described lower bellows is provided with sealing plate, described sealing plate above be provided with sealing clamp, described sealing plate lower end be bottom little be obliquely installed and described sealing plate plane of inclination be connected on ladder boss, described sealing clamp is fixed by screws on sealing plate, the bottom of described upper valve rod is connected with sealing plate and with the top of described lower valve rod through described sealing clamp, be provided with bellows at the top of described sealing clamp, the top of bellows is provided with top sealing plate on described, above described top sealing plate, be provided with top seal pressing plate, to be that bottom is little be obliquely installed and the plane of inclination of described top sealing plate is connected on the plane of inclination of valve stem passage described top sealing plate, described top seal pressing plate is fixed on top sealing plate by top set screw and the end of described top seal pressing plate is fixed on the top of valve stem passage by fixing bolt.
2. the stop valve with double-level-metal seal bellows according to claim 1, is characterized in that: the top at described upper valve rod is also provided with handwheel, and described handwheel is connected with upper valve rod by Stem Mut.
3. the stop valve with double-level-metal seal bellows according to claim 2, is characterized in that: described valve body is that this body stainless steel forgings difficult to understand forms through solid solution.
4. the stop valve with double-level-metal seal bellows according to claim 3, is characterized in that: described sealing plate, sealing clamp, top sealing plate and top seal pressing plate be metallic material and make.
5. the stop valve with double-level-metal seal bellows according to claim 4, is characterized in that: the height of described valve stem passage is 2 times of valve body length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394344.0U CN203948666U (en) | 2014-07-10 | 2014-07-10 | There is the stop valve of double-level-metal seal bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420394344.0U CN203948666U (en) | 2014-07-10 | 2014-07-10 | There is the stop valve of double-level-metal seal bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948666U true CN203948666U (en) | 2014-11-19 |
Family
ID=51890703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420394344.0U Expired - Fee Related CN203948666U (en) | 2014-07-10 | 2014-07-10 | There is the stop valve of double-level-metal seal bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056659A (en) * | 2018-01-18 | 2019-07-26 | 江苏鼎晟阀门有限公司 | Chlorine forged steel check valve |
| CN111022654A (en) * | 2019-11-22 | 2020-04-17 | 江苏克劳特低温技术有限公司 | Low-temperature valve |
-
2014
- 2014-07-10 CN CN201420394344.0U patent/CN203948666U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056659A (en) * | 2018-01-18 | 2019-07-26 | 江苏鼎晟阀门有限公司 | Chlorine forged steel check valve |
| CN111022654A (en) * | 2019-11-22 | 2020-04-17 | 江苏克劳特低温技术有限公司 | Low-temperature valve |
| CN111022654B (en) * | 2019-11-22 | 2021-11-26 | 江苏克劳特低温技术有限公司 | Low-temperature valve |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20190710 |