CN207064691U - A kind of fast detachable pipeline gate valve - Google Patents
A kind of fast detachable pipeline gate valve Download PDFInfo
- Publication number
- CN207064691U CN207064691U CN201621414347.1U CN201621414347U CN207064691U CN 207064691 U CN207064691 U CN 207064691U CN 201621414347 U CN201621414347 U CN 201621414347U CN 207064691 U CN207064691 U CN 207064691U
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- valve
- bonnet
- gate valve
- lug
- fast detachable
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Abstract
The utility model discloses a kind of fast detachable pipeline gate valve, the gate valve includes：Valve body, valve seat, bonnet, flashboard and valve rod；The flashboard is arranged in valve body；One end of the valve rod is connected with flashboard, and the other end passes through bonnet；The lower section of flange sets lug in the valve body of the gate valve, and hole is provided with the lug；The eyelet bolt is connected on lug by lateral pin, and can be using lateral pin as 180 ° of rotations of axis；Bolt hole in the bonnet on flange has opening slot structure, and the eyelet bolt can be fixed through nut and bonnet.Fast detachable pipeline gate valve of the present utility model is in dismounting, it is only necessary to which the nut to come loose on bonnet, eyelet bolt are outwards scattered using lateral pin as fulcrum, and bonnet can be removed, and eyelet bolt is still hung on the lug of valve body.
Description
Technical field
Valve field is the utility model is related to, more particularly, to a kind of fast detachable pipeline gate valve.
Background technology
Pipeline gate valve is primarily adapted for use on the pipelines such as oil transportation, water delivery, gas transmission, is switched off or on pipeline medium, is had fine
Sealing property.But the middle flange of conventional pipeline gate valve (flange of connection valve body and bonnet) is to use studs and spiral shell
Mother connects., it is necessary to which all studs are all pulled down during maintenance, further take out bonnet, can not on-line maintenance, therefore, maintenance extremely
Inconvenience, it is quite time-consuming.In addition, the sealing between the valve rod and valve body axis hole of existing gate valve is mostly that simple single filler is close
Envelope, sealing have certain hidden danger.
Utility model content
The purpose of this utility model is to provide a kind of fast detachable pipeline gate valve.
To achieve the above object, the utility model uses herein below：
A kind of fast detachable pipeline gate valve, the gate valve include：Valve body, valve seat, bonnet, flashboard and valve rod；The lock
Plate is arranged in valve body；One end of the valve rod is connected with flashboard, and the other end passes through bonnet；Flange in the valve body of the gate valve
Lower section sets lug, and hole is provided with the lug；The eyelet bolt is connected on lug by lateral pin, and can using lateral pin as
180 ° of rotations of axis；Bolt hole in the bonnet on flange has opening slot structure, and the eyelet bolt can be through nut and valve
Lid is fixed.
Fast detachable pipeline gate valve of the present utility model is in dismounting, it is only necessary to the nut to come loose on bonnet, movable joint spiral shell
Bolt is outwards scattered using lateral pin as fulcrum, and bonnet can be removed, and eyelet bolt is still hung on the lug of valve body.
Further, the contact position of the shaft hole inner wall of the outer wall of the valve rod and valve body is multi-layer sealed mechanism；Multilayer is close
Sealing mechanism includes the first packing layer, spacer ring and the second packing layer set gradually along axis hole axis；Above first packing layer
Gland is set, upper seal support is set below second packing layer, divided ring is set below the upper seal support.
Further, first packing layer and the second packing layer are soft graphite material packing layer, and spacer ring is flexible stone
Black material.
Further, first packing layer and the second packing layer are the soft graphite material that sulfur content is not higher than 1000ppm
Matter packing layer, spacer ring are the soft graphite material that sulfur content is not higher than 1000ppm.Flexible graphite material is natural flake graphite warp
Made from oxidant chemical treatment and high-temperature expansion.Inventor is studied valve rod corrosion flexible graphite packing, finds to work as
When sulfur content is too high, valve rod can be caused to corrode.Possible mechanism be flexible graphite packing in use inevitably
Contacted with metal valve stem, it shifts to gap, formed in gap stronger with slight gap, sulphion group between valve rod be present
Electrolyte, make valve rod produce crevice corrosion, simultaneously because graphite is different from the point position of metal, there is also galvanic couple therebetween
Corrosion.To reduce corrosion of the flexible graphite packing to valve rod, while economy is considered, preferably select sulfur content and be not higher than
The flexible graphite material of 1000ppm low sulfur content is as valve stem packing material.
Further, the gate valve also includes：Handwheel, setting are mutually fixed with valve rod through valve stem nut.
The utility model has advantages below：
1st, fast detachable pipeline gate valve of the present utility model sets ledge arrangement in valve body below flange, is bored on lug
Hole, the studs of routine is replaced with the eyelet bolt in the flat hole of single head band, eyelet bolt is connected on lug by lateral pin, movable joint
Bolt can have opening slot structure by axis of lateral pin with 180 ° of rotations, the middle flange bolt hole of bonnet, in dismounting, it is only necessary to
The nut to come loose on bonnet, eyelet bolt outwards scatter using lateral pin as fulcrum, and bonnet can be removed, and eyelet bolt still hangs over valve
On the lug of body.
2nd, fast detachable pipeline gate valve of the present utility model in the outer wall of valve rod and the shaft hole inner wall of valve body by connecing
Synapsis sets multi-layer sealed mechanism, improves the sealing of valve rod and valve body junction, while also improve the fastness of valve rod.
3rd, fast detachable pipeline gate valve design of the present utility model is reasonable, technique is advanced, dependable performance, sealing property
Height, service life length.
4th, fast detachable pipeline gate valve of the present utility model can be applied to boiler, offshore oil drilling platform, petrochemical industry, smelting
The industries such as refining, coal industry and natural gas.
Brief description of the drawings
Specific embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of fast detachable pipeline gate valve of the present utility model.
Fig. 2 is the sealing mechanism structural representation of valve rod and valve body of the present utility model.
Embodiment
In order to illustrate more clearly of the utility model, the utility model is done further with reference to preferred embodiment
It is bright.It will be appreciated by those skilled in the art that specifically described content is illustrative and be not restrictive below, should not be with this
Limit the scope of protection of the utility model.
Embodiment
As illustrated in fig. 1 and 2, it is the structural representation of fast detachable pipeline gate valve of the present utility model.The gate valve includes：
Valve body 1, valve seat 2, bonnet 6, flashboard 3, valve rod 4 and handwheel 12.Handwheel 12 sets and fixed with valve rod 4 through the phase of valve stem nut 11.Lock
Plate 3 is arranged in valve body 1, is coordinated with valve seat 2.One end of valve rod 4 is connected with flashboard 3, and the other end passes through bonnet 6.Method in valve body 1
Blue lower section sets lug 5, and hole is provided with lug 5.Eyelet bolt 14 is connected to lug 5 by lateral pin (not shown)
On, and can be using lateral pin as 180 ° of rotations of axis.Bolt hole in bonnet 6 on flange has opening slot structure 15, eyelet bolt 14
It can be fixed through nut 7 and bonnet 6.The contact position of the outer wall of valve rod 4 and the shaft hole inner wall of valve body 1 is multi-layer sealed mechanism 9；Multilayer
Sealing mechanism 9 includes the first packing layer 91, the packing layer 93 of spacer ring 92 and second set gradually along axis hole axis；First filler
The top of layer 91 sets gland 10, and the lower section of the second packing layer 93 sets upper seal support 8, and the lower section of upper seal support 8 sets divided ring
12.First packing layer 91 and the second packing layer 93 are not higher than 1000ppm soft graphite material packing layer, spacer ring 92 for sulfur content
1000ppm soft graphite material is not higher than for sulfur content.
Fast detachable pipeline gate valve of the present utility model sets ledge arrangement in valve body below flange, bored on lug
Hole, the studs of routine is replaced with the eyelet bolt in the flat hole of single head band, eyelet bolt is connected on lug by lateral pin, movable joint
Bolt can have opening slot structure by axis of lateral pin with 180 ° of rotations, the middle flange bolt hole of bonnet, in dismounting, it is only necessary to
The nut to come loose on bonnet, eyelet bolt outwards scatter using lateral pin as fulcrum, and bonnet can be removed, and eyelet bolt still hangs over valve
On the lug of body.
The use temperature range of fast detachable pipeline gate valve of the present utility model is (- 29) DEG C -425 DEG C, leakage class
Meet《ISO 5208-2008》The requirement of A levels, zero leakage, nominal pressure cover PN16-PN640, CLASS 150-CLASS 300,
It is widely used.Screw thread, socket weld, butt welding can be used to be connected with flange.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model, for those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms, all embodiments can not be exhaustive here,
It is every to belong to obvious changes or variations that the technical solution of the utility model is extended out still in of the present utility model
The row of protection domain.
Claims (4)
1. a kind of fast detachable pipeline gate valve, it is characterised in that the gate valve includes：Valve body, valve seat, bonnet, flashboard and valve
Bar；The flashboard is arranged in valve body；One end of the valve rod is connected with flashboard, and the other end passes through bonnet；The valve of the gate valve
The lower section of flange sets lug in body, and hole is provided with the lug；Eyelet bolt is connected on lug by lateral pin, and can be with
Lateral pin is 180 ° of rotations of axis；Bolt hole in the bonnet on flange has opening slot structure, and the eyelet bolt can be through spiral shell
Mother fixes with bonnet.
2. a kind of fast detachable pipeline gate valve according to claim 1, it is characterised in that the outer wall and valve of the valve rod
The contact position of the shaft hole inner wall of body is multi-layer sealed mechanism；What multi-layer sealed mechanism included setting gradually along axis hole axis first fills out
The bed of material, spacer ring and the second packing layer；Gland is set above first packing layer, set below second packing layer
Upper seal support, the upper seal support lower section set divided ring.
3. a kind of fast detachable pipeline gate valve according to claim 2, it is characterised in that first packing layer and
Two packing layers are soft graphite material packing layer, and spacer ring is soft graphite material.
4. a kind of fast detachable pipeline gate valve according to claim 2, it is characterised in that the gate valve also includes：Hand
Wheel, setting are mutually fixed with valve rod through valve stem nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621414347.1U CN207064691U (en) | 2016-12-22 | 2016-12-22 | A kind of fast detachable pipeline gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621414347.1U CN207064691U (en) | 2016-12-22 | 2016-12-22 | A kind of fast detachable pipeline gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207064691U true CN207064691U (en) | 2018-03-02 |
Family
ID=61500574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621414347.1U Active CN207064691U (en) | 2016-12-22 | 2016-12-22 | A kind of fast detachable pipeline gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207064691U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048244A (en) * | 2021-03-26 | 2021-06-29 | 沪航科技集团有限公司 | Check valve with valve clack having protection structure |
-
2016
- 2016-12-22 CN CN201621414347.1U patent/CN207064691U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113048244A (en) * | 2021-03-26 | 2021-06-29 | 沪航科技集团有限公司 | Check valve with valve clack having protection structure |
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