CN203413129U - Bellows valve - Google Patents
Bellows valve Download PDFInfo
- Publication number
- CN203413129U CN203413129U CN201320360862.6U CN201320360862U CN203413129U CN 203413129 U CN203413129 U CN 203413129U CN 201320360862 U CN201320360862 U CN 201320360862U CN 203413129 U CN203413129 U CN 203413129U
- Authority
- CN
- China
- Prior art keywords
- valve rod
- bonnet
- valve
- bellows
- lower valve
- 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
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model belongs to the technical field of pipeline devices, and relates to valves, in particular to a bellows valve. By using the bellows valve, the technical problems that the structure of the existing bellows valve is complex, the safety performance is low, the strength at a joint is poor and the like can be solved. The bellows valve comprises a valve seat, wherein a lower valve rod is connected to the valve seat; a bellows is sleeved at the outer side of the lower valve rod; an upper valve rod is arranged at one end, far away from the valve seat, of the lower valve rod; a handle is connected to the end part of the upper valve rod; an elastic structure is arranged between the upper valve rod and the lower valve rod; a bonnet is arranged outside the upper and lower valve rods; a bonnet nut is arranged at the connecting part of the bonnet and the valve seat; a first fastening structure is arranged between the bonnet and the upper valve rod; a second fastening structure is connected between the bonnet and the lower valve rod. The bellows valve has the advantages that the design is reasonable, the structure is firm, the safety performance is high, and the sealing property is strong.
Description
Technical field
The utility model belongs to pipe-line equipment technical field, relates to valve, especially relates to a kind of Bellows valves.
Background technique
Bellows valve is generally used on gate valve and stop valve, its structure comprises valve body, valve seat, valve plate, valve gap, handwheel, bellows, valve plate is fixed on valve rod lower end, between valve rod and valve gap, adopts sylphon seal, between valve gap and valve body, by flange seal, is connected.Its shortcoming is to use for a long time while occur leaking when bellows, and medium will leak outside between valve rod and valve gap, and between valve gap and valve body, flange seal is connected in use easily leakage, poor sealing performance.Meanwhile, common Bellows valve flap anti-sticking poor performance, easily stuck by bits in fluid or the corrosion phenomena of self, easily cause to reveal to cause valve seat cavitation erosion to damage.
The problem existing in order to improve prior art, people have carried out long-term exploration, have proposed various solutions.For example, Chinese patent literature discloses a kind of Bellows valve [application number: 200620076422.8], comprises valve body, valve gap, flap, valve rod and handwheel, and on section valve rod of that in valve body, cover has bellows.There is radially boss the lower end of valve rod, and radially boss and valve rod form as one for these.Be characterized in that there are upper overcoat and upper inner sleeve in valve rod upper end, upper overcoat seals mutually with valve cover chamber, is movable and coordinates between upper inner sleeve and valve rod, and the upper end of bellows is clamped between overcoat and upper inner sleeve and welds together.Radially on that section of valve rod on boss, have lower overcoat and lower inner sleeve, the external diameter of lower inner sleeve equates with the external diameter of boss radially and the two is sealing shape and links together, and bellows lower end is clamped between lower overcoat and lower inner sleeve and welds together.
Such scheme has improved prior art to a certain extent, is difficult for breaking, leakage phenomenon in using process.Yet the defect such as complex structure, Safety performance are low, joint intensity difference that such scheme still exists.
Summary of the invention
The purpose of this utility model is the problem existing for prior art, provides a kind of reasonable in design, sound construction, and Safety performance is high, the Bellows valves that sealability is strong.
For achieving the above object, the utility model has adopted following technical proposal: this Bellows valves, comprise valve seat, on valve seat, be connected with lower valve rod, outside at lower valve rod is arranged with bellows, at lower valve rod, away from one end of valve seat, be provided with upper valve rod, end at upper valve rod is connected with handle, between upper valve rod and lower valve rod, be provided with elastic structure, at upper valve rod and lower valve rod, be provided with bonnet outward, described bonnet and valve seat joint are provided with valve cap nut, between described bonnet and upper valve rod, be provided with the first fastening structure, between described bonnet and lower valve rod, be connected with the second fastening structure.The structural strength that is arranged so that Bellows valves of the first fastening structure and the second fastening structure is high, firm and durable, good seal performance.
In above-mentioned Bellows valves, described elastic structure comprises the steel ball being located between upper valve rod and lower valve rod, between steel ball and lower valve rod, is provided with elastic cylindrical pin.
Further, in above-mentioned Bellows valves, on described valve seat, be arranged with two cover ferrule assemblies.
Further, in above-mentioned Bellows valves, described ferrule assemblies comprises front cutting ferrule and the rear cutting ferrule being arranged side by side, and described front cutting ferrule is connected by cutting ferrule nut with rear cutting ferrule.
In above-mentioned Bellows valves, the first described fastening structure comprises the first locking nut being located at outside bonnet, at bonnet and upper valve rod joint, is provided with gland, in the first locking nut, is provided with filler.
In above-mentioned Bellows valves, the second described fastening structure comprises the second locking nut being located at outside bonnet.
In above-mentioned Bellows valves, described upper valve rod is connected by the Cock screw being located in handle with handle.
In above-mentioned Bellows valves, described valve seat and bonnet joint are provided with sealing gasket.
Compared with prior art, the advantage of this Bellows valves is: reasonable in design, and sound construction, Safety performance is high, and sealability is strong.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram that the utility model provides.
In figure, valve seat 1, lower valve rod 2, bellows 3, upper valve rod 4, handle 5, Cock screw 51, elastic structure 6, steel ball 61, elastic cylindrical pin 62, bonnet 7, the first fastening structure 8, the first locking nut 81, gland 82, filler 83, the second fastening structure 9, the second locking nut 9, valve cap nut 10, ferrule assemblies 11, sealing gasket 12.
Embodiment
As shown in Figure 1, this Bellows valves, comprise valve seat 1, on valve seat 1, be connected with lower valve rod 2, in the outside of lower valve rod 2, be arranged with bellows 3, at lower valve rod 2, away from one end of valve seat 1, be provided with upper valve rod 4, in the end of upper valve rod 4, be connected with handle 5, between upper valve rod 4 and lower valve rod 2, be provided with elastic structure 6, outside upper valve rod 4 and lower valve rod 2, be provided with bonnet 7, in bonnet 7 and valve seat 1 joint, be provided with valve cap nut 10, between bonnet 7 and upper valve rod 4, be provided with the first fastening structure 8, between bonnet 7 and lower valve rod 2, be connected with the second fastening structure 9.The structural strength that is arranged so that Bellows valves of the first fastening structure 8 and the second fastening structure 9 is high, firm and durable, good seal performance.
As a kind of technological scheme of comparatively optimizing, in the present embodiment, elastic structure 6 comprises the steel ball 61 being located between upper valve rod 4 and lower valve rod 2, between steel ball 61 and lower valve rod 2, be provided with elastic cylindrical pin 62, on valve seat 1, be arranged with two cover ferrule assemblies 11, ferrule assemblies 11 comprises front cutting ferrule and the rear cutting ferrule being arranged side by side, and front cutting ferrule is connected by cutting ferrule nut with rear cutting ferrule.
The first fastening structure 8 comprises the first locking nut 81 being located at outside bonnet 7, in bonnet 7 and upper valve rod 4 joints, be provided with gland 82, in the first locking nut 81, be provided with filler 83, the second fastening structure 9 comprises the second locking nut 9 being located at outside bonnet 7, upper valve rod 4 is connected by the Cock screw 51 being located in handle 5 with handle 5, in valve seat 1 and bonnet 7 joints, is provided with sealing gasket 12.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as valve seat 1, lower valve rod 2, bellows 3, upper valve rod 4, handle 5, Cock screw 51, elastic structure 6, steel ball 61, elastic cylindrical pin 62, bonnet 7, the first fastening structure 8, the first locking nut 81, gland 82, filler 83, the second fastening structure 9, the second locking nut 9, valve cap nut 10, ferrule assemblies 11, sealing gasket 12 herein, do not got rid of the possibility of using other term.Use these terms to be only used to describe more easily and explain essence of the present utility model, they are construed to any additional restriction is all contrary with the utility model spirit.
Claims (8)
1. a Bellows valves, comprise valve seat (1), on valve seat (1), be connected with lower valve rod (2), in the outside of lower valve rod (2), be arranged with bellows (3), at lower valve rod (2), away from one end of valve seat (1), be provided with upper valve rod (4), in the end of upper valve rod (4), be connected with handle (5), between upper valve rod (4) and lower valve rod (2), be provided with elastic structure (6), outside upper valve rod (4) and lower valve rod (2), be provided with bonnet (7), it is characterized in that, described bonnet (7) is provided with valve cap nut (10) with valve seat (1) joint, between described bonnet (7) and upper valve rod (4), be provided with the first fastening structure (8), between described bonnet (7) and lower valve rod (2), be connected with the second fastening structure (9).
2. Bellows valves according to claim 1, it is characterized in that, described elastic structure (6) comprises the steel ball (61) being located between upper valve rod (4) and lower valve rod (2), between steel ball (61) and lower valve rod (2), is provided with elastic cylindrical pin (62).
3. Bellows valves according to claim 1, is characterized in that, is arranged with two cover ferrule assemblies (11) on described valve seat (1).
4. Bellows valves according to claim 3, is characterized in that, described ferrule assemblies (11) comprises front cutting ferrule and the rear cutting ferrule being arranged side by side, and described front cutting ferrule is connected by cutting ferrule nut with rear cutting ferrule.
5. according to the Bellows valves described in claim 1 or 2 or 3 or 4, it is characterized in that, described the first fastening structure (8) comprises the first locking nut (81) being located at outside bonnet (7), in bonnet (7) and upper valve rod (4) joint, be provided with gland (82), in the first locking nut (81), be provided with filler (83).
6. according to the Bellows valves described in claim 1 or 2 or 3 or 4, it is characterized in that, described the second fastening structure (9) comprises the second locking nut (91) being located at outside bonnet (7).
7. according to the Bellows valves described in claim 1 or 2 or 3 or 4, it is characterized in that, described upper valve rod (4) is connected by the Cock screw (51) being located in handle (5) with handle (5).
8. according to the Bellows valves described in claim 1 or 2 or 3 or 4, it is characterized in that, described valve seat (1) is provided with sealing gasket (12) with bonnet (7) joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320360862.6U CN203413129U (en) | 2013-06-20 | 2013-06-20 | Bellows valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320360862.6U CN203413129U (en) | 2013-06-20 | 2013-06-20 | Bellows valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203413129U true CN203413129U (en) | 2014-01-29 |
Family
ID=49976018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320360862.6U Expired - Fee Related CN203413129U (en) | 2013-06-20 | 2013-06-20 | Bellows valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203413129U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199057A1 (en) * | 2021-03-23 | 2022-09-29 | Engineered Controls International, Llc | Cryogenic fluid shut-off valve |
-
2013
- 2013-06-20 CN CN201320360862.6U patent/CN203413129U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022199057A1 (en) * | 2021-03-23 | 2022-09-29 | Engineered Controls International, Llc | Cryogenic fluid shut-off valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203926889U (en) | A kind of fire-proof ball valve with Novel valve seat structure | |
| CN103591307A (en) | Triple eccentric metal hard sealing butterfly valve | |
| CN201723871U (en) | Pipe joint sealing device | |
| CN203413129U (en) | Bellows valve | |
| CN205350417U (en) | Floating ball valve | |
| CN206268517U (en) | A kind of external hair style check valve of entirety | |
| CN202074071U (en) | Nuclear-power straight-through diaphragm valve | |
| CN201606504U (en) | Hard sealing angle valve | |
| CN209294607U (en) | Injecting glue sealing flange | |
| CN203560467U (en) | Triple-eccentric metal hard-sealing butterfly valve | |
| CN202972300U (en) | Ultrahigh pressure detachable cone sealing pressure-measuring connector | |
| CN202252179U (en) | Stop check valve for high-pressure bellows | |
| CN204756032U (en) | Butt clamp butterfly check valve | |
| CN202629113U (en) | Rubber valve seat of butterfly valve | |
| CN204312745U (en) | A kind of gate valve | |
| CN210179120U (en) | Single-side glue injection sealing flange with leaking stoppage sealing ring | |
| CN102954236A (en) | Stop valve based on high-tightness valve clack | |
| CN201651333U (en) | Special valve for chlorine gas | |
| CN203009855U (en) | Internal-pressure self-sealing type valve cover stop valve | |
| CN205534482U (en) | Valve body of ball valve | |
| CN204358132U (en) | A kind of vent stop valve | |
| CN203757048U (en) | Forced seal ball valve rigidity seal valve seat with stopping and discharging functions | |
| CN203627939U (en) | High-sealing swing check valve | |
| CN203258139U (en) | Middle flange metal seal device for middle-high pressure valve | |
| CN218913752U (en) | Leakage-proof stop valve |
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: 20140129 Termination date: 20150620 |
|
| EXPY | Termination of patent right or utility model |