CN206694651U - A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved - Google Patents
A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved Download PDFInfo
- Publication number
- CN206694651U CN206694651U CN201720400049.5U CN201720400049U CN206694651U CN 206694651 U CN206694651 U CN 206694651U CN 201720400049 U CN201720400049 U CN 201720400049U CN 206694651 U CN206694651 U CN 206694651U
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- CN
- China
- Prior art keywords
- valve
- hole portion
- bushing
- stem nut
- upper sealing
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Abstract
It the utility model is related to a kind of diaphragm valve bonnet assemblies that upper sealing can be achieved, including bonnet (1) and valve rod (5), described bonnet (1) is provided with the shoulder hole passed through for the valve rod (5), the shoulder hole includes the small hole portion of underlying smaller aperture due and the big hole portion of larger aperture above, in big hole portion region, bushing (3) and valve stem nut (2) are also arranged with described valve rod (5), wherein, the bottom of described bushing (3) abuts the bottom of the big hole portion, and seal the small hole portion, described valve stem nut (2) is above the bushing (3), and for being fixed the bushing (3).Compared with prior art, the utility model is simple in construction, safe and reliable, the light economy of product, easy to maintenance etc..
Description
Technical field
A kind of parts of diaphragm valve are the utility model is related to, more particularly, to a kind of diaphragm valve valve that upper sealing can be achieved
Cap assemblies.
Background technology
Diaphragm valve opens and closes function using the realization that moves up and down of barrier film.Barrier film isolates medium with bonnet assemblies epicoele,
There is no packing medium not leak outside yet.But in the case of barrier film breakage, it is possible to medium occurs and leaks, threatens equipment, people
Member's safety.Therefore, Seal Design on increasing on bonnet, bonnet assemblies seal cavity is formed to realize that secondary seal seems extremely
It is important.
Utility model content
The purpose of this utility model is exactly to be provided the defects of overcoming above-mentioned prior art to exist on a kind of can be achieved
The diaphragm valve bonnet assemblies of sealing.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved, including bonnet and valve rod, being provided with for described bonnet supply
The shoulder hole that the valve rod passes through, the shoulder hole include the small hole portion of underlying smaller aperture due and large hole above
The big hole portion in footpath, in big hole portion region, bushing and valve stem nut are also arranged with described valve rod, wherein, described bushing
Bottom abut the bottom of the big hole portion, and seal the small hole portion, described valve stem nut above the bushing, and
For being fixed the bushing.
As preferred embodiment, the screw hole for extending transversely through its side side wall, valve rod are additionally provided with described bonnet
The downward precession of nut and when compressing the bushing, one matched holding screw of insertion in described screw hole, and cause tight
Determine screw and push against the valve stem nut.
As preferred embodiment, the outside wall surface of described valve stem nut is additionally provided with for the tightening in correspondence position
Screw stretches into the locking groove of stop.
As preferred embodiment, the external diameter of described bushing matches with the internal diameter of the big hole portion.
As preferred embodiment, annular seal groove is additionally provided with the outside wall surface of described bushing, in the annular
O-ring is provided with seal groove.
As preferred embodiment, the top of described valve stem nut is provided with flat recess, its outer surface be provided with it is described
The connection screw thread of the big hole portion inner surface matching of shoulder hole.
As preferred embodiment, the edge on the top of described valve stem nut stretches out, and forms covering valve
The dust cap on cover top.
Diaphragm valve bonnet assemblies of the present utility model are formed by independent bushing and valve rod and sealed, and by valve stem nut,
Connection screw thread inside bonnet is isolated to outside seal with buss, and so, even if barrier film is damaged, medium will not also leak and corrode spiral shell
Line and valve stem nut, so as to avoid the danger that valve stem nut contact medium is corroded, while also can be completely in particular cases copper
Valve stem nut does not allow the requirement with particular medium contact.
Compared with prior art, the utility model has advantages below：
(1) it is simple in construction：The new structure is simple and reliable, by groups such as bonnet, valve rod, bushing, valve stem nut, holding screws
Into.
(2) it is safe and reliable：Connection screw thread and threaded stem are isolated to outside seal with buss by the structure, even if barrier film is broken
Damage, medium will not also leak and corrode screw thread and valve stem nut, so as to avoid the risk that valve stem nut contact medium is corroded.
(3) product is light, economical：Valve stem nut is fastened by straight slot and special spanner, cancels the boss of pretension, if
Dust cap is calculated as, blank and pts wt is greatly reduced, has saved cost.
(4) it is easy to maintenance：When not exclusively failure occurs for such as structure, valve stem nut can be unclamped online, takes out bushing, carried out
Sealing ring or component are safeguarded and changed, easy to maintenance.
(5) valve stem nut can be operated by holding screw stop in valve stem nut with flexibly being set after bonnet assembly pretightening
Simply, function is reliable.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
In figure, 1- bonnets, 2- valve stem nuts, 3- bushings, 4-O type circles, 5- valve rods, 6- holding screws.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved, its structure is as shown in figure 1, including bonnet 1 and valve rod 5, valve
Lid 1 is provided with the shoulder hole passed through for valve rod 5, and the shoulder hole includes the small hole portion of underlying smaller aperture due and positioned at upper
The big hole portion of the larger aperture of side, in big hole portion region, is also arranged with bushing 3 and valve stem nut 2 on valve rod 5, wherein, bushing
3 bottom abuts the bottom of big hole portion, and seals small hole portion, and valve stem nut 2 is used to be fixed lining located at the top of bushing 3
Set 3.
As preferred embodiment, the screw hole for extending transversely through its side side wall, valve stem nut 2 are additionally provided with bonnet 1
Downward precession and when compressing bushing 3, one matched holding screw 6 of insertion in screw hole, and cause holding screw 6 to push against valve
Stem nut 2.
As preferred embodiment, the external diameter of bushing 3 matches with the internal diameter of big hole portion.It is furthermore preferred that the outer wall of bushing 3
Annular seal groove is additionally provided with face, O-ring 4 is provided with annular seal groove.
As preferred embodiment, the top of valve stem nut 2 is provided with flat recess, and its outer surface is provided with big with shoulder hole
The connection screw thread of hole portion inner surface matching.It is furthermore preferred that the edge on the top of valve stem nut 2 stretches out, and form covering valve
The dust cap of the operative tip of lid 1.
The diaphragm valve bonnet assemblies of the present embodiment are formed by independent bushing 3 and valve rod 5 and sealed, and by valve stem nut 2,
Connection screw thread inside bonnet 1 is isolated to outside the sealing of bushing 3, and so, even if barrier film is damaged, medium will not also leak and corrode
Screw thread and valve stem nut 2, so as to avoid the danger that the contact medium of valve stem nut 2 is corroded, while also can completely in particular cases
Copper valve stem nut 2 does not allow the requirement with particular medium contact.Meanwhile bushing 3 is fixed by valve stem nut 2, valve rod
Nut 2 is matched with the connection screw thread inside bonnet 1 and is fixedly connected, succinct, reliable by the stop of holding screw 6 after fastening.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using practicality
It is new.Person skilled in the art obviously can easily make various modifications to these embodiments, and illustrating herein
General Principle be applied in other embodiment without by performing creative labour.Therefore, the utility model is not limited to above-mentioned
Embodiment, those skilled in the art according to announcement of the present utility model, do not depart from improvement that the utility model category made and
Modification all should be within the scope of protection of the utility model.
Claims (7)
1. a kind of diaphragm valve bonnet assemblies that upper sealing can be achieved, including bonnet (1) and valve rod (5), described bonnet (1) it is upper
Provided with the shoulder hole passed through for the valve rod (5), the shoulder hole includes the small hole portion of underlying smaller aperture due and positioned at upper
The big hole portion of the larger aperture of side, it is characterised in that in big hole portion region, bushing (3) is also arranged with described valve rod (5)
With valve stem nut (2), wherein, the bottom of described bushing (3) abuts the bottom of the big hole portion, and seals the small hole portion,
Described valve stem nut (2) is used to be fixed the bushing (3) above the bushing (3).
A kind of 2. diaphragm valve bonnet assemblies that upper sealing can be achieved according to claim 1, it is characterised in that described valve
The screw hole for extending transversely through its side side wall is additionally provided with lid (1), valve stem nut (2) precession downwards simultaneously compresses the bushing (3)
When, described screw hole one matched holding screw (6) of interior insertion, and cause holding screw (6) to push against the valve rod spiral shell
Female (2).
A kind of 3. diaphragm valve bonnet assemblies that upper sealing can be achieved according to claim 2, it is characterised in that described valve
The outside wall surface of stem nut (2) is additionally provided with the locking groove that stop is stretched into for the holding screw (6) in correspondence position.
A kind of 4. diaphragm valve bonnet assemblies that upper sealing can be achieved according to claim 1, it is characterised in that described lining
The external diameter of set (3) matches with the internal diameter of the big hole portion.
A kind of 5. diaphragm valve bonnet assemblies that upper sealing can be achieved according to claim 4, it is characterised in that described lining
Cover and be additionally provided with annular seal groove in the outside wall surface of (3), O-ring (4) is provided with the annular seal groove.
A kind of 6. diaphragm valve bonnet assemblies that upper sealing can be achieved according to claim 1, it is characterised in that described valve
The top of stem nut (2) is provided with flat recess, and its outer surface is provided with the connection spiral shell matched with the big hole portion inner surface of the shoulder hole
Line.
A kind of 7. diaphragm valve bonnet assemblies that upper sealing can be achieved according to claim 6, it is characterised in that described valve
The edge on the top of stem nut (2) stretches out, and forms the dust cap on covering bonnet (1) top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400049.5U CN206694651U (en) | 2017-04-17 | 2017-04-17 | A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720400049.5U CN206694651U (en) | 2017-04-17 | 2017-04-17 | A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206694651U true CN206694651U (en) | 2017-12-01 |
Family
ID=60445060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720400049.5U Active CN206694651U (en) | 2017-04-17 | 2017-04-17 | A kind of diaphragm valve bonnet assemblies that upper sealing can be achieved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206694651U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885042A (en) * | 2017-04-17 | 2017-06-23 | 上海阀门五厂有限公司 | A kind of diaphragm valve bonnet assemblies for being capable of achieving upper sealing |
-
2017
- 2017-04-17 CN CN201720400049.5U patent/CN206694651U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106885042A (en) * | 2017-04-17 | 2017-06-23 | 上海阀门五厂有限公司 | A kind of diaphragm valve bonnet assemblies for being capable of achieving upper sealing |
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