CN203823079U - Top guided bellows seal low-noise single-seat control valve - Google Patents
Top guided bellows seal low-noise single-seat control valve Download PDFInfo
- Publication number
- CN203823079U CN203823079U CN201420088382.3U CN201420088382U CN203823079U CN 203823079 U CN203823079 U CN 203823079U CN 201420088382 U CN201420088382 U CN 201420088382U CN 203823079 U CN203823079 U CN 203823079U
- Authority
- CN
- China
- Prior art keywords
- valve
- spool
- seat
- upper cover
- bellows component
- 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 - Lifetime
Links
- 238000012856 packing Methods 0.000 claims abstract description 7
- 244000144985 peep Species 0.000 claims description 6
- 238000007789 sealing Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 210000004907 gland Anatomy 0.000 abstract 1
- 239000000945 filler Substances 0.000 description 3
- XLYOFNOQVPJJNP-ZSJDYOACSA-N Heavy water Chemical compound [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 235000013599 spices Nutrition 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model discloses a top guided bellows seal low-noise single-seat control valve. The top guided bellows seal low-noise single-seat control valve comprises a pressure bearing valve chamber consisting of a valve body, an upper cover and a middle cover, wherein a bellows component, a guide bushing, a valve seat and a spool component which are matched with the guide bushing and the valve seat are arranged in the pressure bearing valve chamber, the spool component comprises a spool and a valve stem, the valve stem is connected with the spool through a pin roll, one end of the bellows component is welded with the valve stem, the other end of the bellows component and the upper cover are sealed through a gasket, an anti-rotating mechanism which is used for preventing the bellows component from being damaged during rotation is arranged on the guide bushing, an observation hole plug for checking whether the bellows component is cracked or failed or not is arranged on the upper cover, and a packing gland component is arranged at the top part of the upper cover. The control valve has the advantages that the manufacturing cost of the valve is reduced, the structure is more compact and reasonable and the absolute safety is guaranteed by sealing medium in a cavity between the valve body and the upper cover through the bellows component.
Description
Technical field
The utility model belongs to industrial process control valve field, is specifically related to a kind of top guide sylphon seal low noise single-seat adjusting valve.
Background technique
Sylphon seal low noise single-seat adjusting valve is the terminal original paper that industrial process is controlled, and is applicable to the occasion of poison extremely, inflammable and explosive volatile and rare precious metals medium.The common modulating valve that the industrial departments such as petrochemical industry, Coal Chemical Industry, medicine, power station use, external motive sealing is only with filler together sealing.Because valve rod constantly moves, after long-play, filler is worn, and forms micro-gap with valve rod, and medium is outside seepage likely, if it doesn't matter for generic media; If but poisonous, be harmful to, have the media such as nuclear radiation, once seepage will cause severe contamination to environment, even jeopardize personnel's life; The catalyzer of using as the heavy water in nuclear reactor, chemical industry in addition, rare spice liquid etc. are all very expensive, and these media and above-mentioned dangerous class medium do not allow outside seepage, for common modulating valve, are difficult to meet this requirement.The rotation-preventing mechanism design of common damper valve of bellow seal is between valve rod and upper cover, very inconvenient in processing, installation and debugging process, has increased valve cost.
Summary of the invention
The problems referred to above that exist in order to overcome prior art field, the purpose of this utility model is, a kind of top guide sylphon seal low noise single-seat adjusting valve is provided, improve the processability of valve, facilitate installation and debugging, thereby greatly improve the reliability of valve, extend its working life.
The top guide sylphon seal low noise single-seat adjusting valve that the utility model provides, it comprises by valve body, upper cover, the pressure-bearing valve chamber that middle cover forms, in described pressure-bearing valve chamber, be provided with bellows component, guide bush, valve seat, the mangetic core assembly matching with guide bush and valve seat, described mangetic core assembly comprises spool, valve rod, described valve rod is connected by bearing pin with spool, described bellows component one end and valve rod are welded to connect, the other end is connected by gasket seal with upper cover, described guide bush is provided with and prevents that bellows component is in use because the rotation-preventing mechanism destroying occurs in rotation, on described, cover and be provided with that can to detect the peep hole whether bellows component break or lost efficacy stifled, described upper tops is provided with packing box assembly.
Described valve body is fixedly connected with by bolts and nuts respectively with upper cover with middle cover, middle cover, valve body and middle cover seal by spiral wound gasket I, described valve seat is arranged on valve body by spiral wound gasket II, and described guide bush is connected on valve seat, and guide bush upper end is connected with middle cover.
Described rotation-preventing mechanism is stop pin, is arranged in guide bush.
Described spool is provided with some noise reduction apertures, and spool side is provided with the U-shaped groove of anti-rotation.
The top guide sylphon seal low noise single-seat adjusting valve that the utility model provides, its beneficial effect is, this modulating valve has reduced the manufacture cost of valve, structure is compact and reasonable more also, utilize bellows component medium-tight in the cavity between valve body and upper cover, only have after bellows bursts, medium just can enter the packing cavity of upper cover, filler still seals, and so just forms two seals, guarantees to be perfectly safe.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment's overall structure schematic diagram;
Fig. 2 is the U-shaped groove structure schematic diagram of model utility embodiment spool;
Fig. 3 be in Fig. 2 A-A to sectional view.
In figure, mark:
1. valve body; 2. upper cover; 3. middle cover; 4. bellows component; 5. guide bush; 6. valve seat; 7. spool; 8. valve rod; 9. bearing pin; 10. pad; 11. peep holes are stifled; 12. packing box assemblys; 13. bolts; 14. nuts; 15. spiral wound gasket I; 16. spiral wound gasket II; 17. stop pins; 18.U type groove.
Embodiment
With reference to the accompanying drawings, in conjunction with the embodiments, the top guide sylphon seal low noise single-seat adjusting valve that the utility model is provided, is described in detail.
Embodiment
With reference to Fig. 1-Fig. 3, the top guide sylphon seal low noise single-seat adjusting valve of the present embodiment, it comprises by valve body 1, upper cover 2, the pressure-bearing valve chamber that middle cover 3 forms, in described pressure-bearing valve chamber, be provided with bellows component 4, guide bush 5, valve seat 6, the mangetic core assembly matching with guide bush 5 and valve seat 6, described mangetic core assembly comprises spool 7, valve rod 8, described valve rod 8 is connected by bearing pin 9 with spool 7, described bellows component 4 one end and valve rod 8 are welded to connect, the other end and upper cover 2 seal by pad 10, described guide bush 5 is provided with and prevents that bellows component 4 is in use because the rotation-preventing mechanism destroying occurs in rotation, described upper cover 2 is provided with and can detects the peep hole stifled 11 whether bellows component 4 breaks or lost efficacy, described upper cover 2 tops are provided with packing box assembly 12.
Described valve body 1 is fixedly connected with nut 14 by bolt 13 respectively with upper cover 2 with middle cover 3, middle cover 3, valve body 1 seals by spiral wound gasket I 15 with middle cover 3, described valve seat 6 is arranged on valve body 1 by spiral wound gasket II 16, described guide bush 5 is connected on valve seat 6, and guide bush 5 upper ends are connected with middle cover 3.
Described rotation-preventing mechanism is stop pin 17, is arranged in guide bush 5.
Described spool 7 is provided with some noise reduction apertures, and surface is through chromium plating cure process, is specially adapted to High Pressure Difference operating mode; Spool 7 sides are provided with the U-shaped groove 18 of anti-rotation.
Valve body 1 and middle cover 3 are fixed by bolt 13 and nut 14, form fluid pressure-bearing lumen, and its sealing completes by spiral wound gasket I 15; Valve seat 6 is pressed on valve body 1 and is formed interior sealing by spiral wound gasket II 16, and guide bush 5 is directly pressed on valve seat 6, and its upper end is fixed by middle cover 3; Spool 7 is fixed by bearing pin 9 with valve rod 8, bellows component 4 one end and valve rod 8 welding, and the other end is fixed by bolt 13 and nut 14 by upper cover 2, and its sealing back cushion sheet 10 completes, and forms first sealing; Spool 7 can slide up and down to realize in guide bush 5 inside the switch of valve, and bellows component 4 stretches and compression movement with valve rod 8 simultaneously, and stop pin 17 can prevent that bellows component 4 from rotating; Spool 7 is provided with the U-shaped groove 18 of anti-conversion; The second sealing of valve top leans on packing box assembly 12 to guarantee, two seals has guaranteed sealing reliability; Whether it is stifled 11 that upper cover 2 is provided with peep hole, block up 11 can detect bellows component 4 and break by peep hole.
Claims (4)
1. a top guide sylphon seal low noise single-seat adjusting valve, it is characterized in that: it comprises by valve body, upper cover, the pressure-bearing valve chamber that middle cover forms, in described pressure-bearing valve chamber, be provided with bellows component, guide bush, valve seat, the mangetic core assembly matching with guide bush and valve seat, described mangetic core assembly comprises spool, valve rod, described valve rod is connected by bearing pin with spool, described bellows component one end and valve rod are welded to connect, the other end and upper cover pass through gasket seal, described guide bush is provided with and prevents that bellows component is in use because the rotation-preventing mechanism destroying occurs in rotation, on described, cover and be provided with that can to detect the peep hole whether bellows component break or lost efficacy stifled, described upper tops is provided with packing box assembly.
2. top guide sylphon seal low noise single-seat adjusting valve according to claim 1, it is characterized in that: described valve body is fixedly connected with by bolts and nuts respectively with upper cover with middle cover, middle cover, valve body and middle cover seal by spiral wound gasket I, described valve seat is arranged on valve body by spiral wound gasket II, described guide bush is connected on valve seat, and guide bush upper end is connected with middle cover.
3. top guide sylphon seal low noise single-seat adjusting valve according to claim 1, is characterized in that: described rotation-preventing mechanism is stop pin, is arranged in guide bush.
4. top guide sylphon seal low noise single-seat adjusting valve according to claim 1, is characterized in that: described spool is provided with some noise reduction apertures, and spool side is provided with the U-shaped groove of anti-rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088382.3U CN203823079U (en) | 2014-02-28 | 2014-02-28 | Top guided bellows seal low-noise single-seat control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088382.3U CN203823079U (en) | 2014-02-28 | 2014-02-28 | Top guided bellows seal low-noise single-seat control valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823079U true CN203823079U (en) | 2014-09-10 |
Family
ID=51478583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088382.3U Expired - Lifetime CN203823079U (en) | 2014-02-28 | 2014-02-28 | Top guided bellows seal low-noise single-seat control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823079U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315156A (en) * | 2014-09-18 | 2015-01-28 | 浙江亿科阀门有限公司 | Single base adjusting valve sealing structure |
| CN104533600A (en) * | 2014-11-28 | 2015-04-22 | 孙万军 | Pressure stabilizing valve of adjustable pressure type turbocharger |
-
2014
- 2014-02-28 CN CN201420088382.3U patent/CN203823079U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104315156A (en) * | 2014-09-18 | 2015-01-28 | 浙江亿科阀门有限公司 | Single base adjusting valve sealing structure |
| CN104533600A (en) * | 2014-11-28 | 2015-04-22 | 孙万军 | Pressure stabilizing valve of adjustable pressure type turbocharger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |