CN206816944U - Stuffing seal, the bonnet for having the device and the regulating valve for having the bonnet - Google Patents
Stuffing seal, the bonnet for having the device and the regulating valve for having the bonnet Download PDFInfo
- Publication number
- CN206816944U CN206816944U CN201720703472.2U CN201720703472U CN206816944U CN 206816944 U CN206816944 U CN 206816944U CN 201720703472 U CN201720703472 U CN 201720703472U CN 206816944 U CN206816944 U CN 206816944U
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- China
- Prior art keywords
- filler
- bonnet
- stuffing seal
- valve rod
- valve
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Abstract
The utility model provides a kind of stuffing seal, has the bonnet of the device and have the regulating valve of the bonnet, and stuffing seal is in the inner chamber of bonnet and is placed on through on the valve rod of inner chamber, includes：First filler；Second filler；3rd filler；Second filler is located between the first filler and the 3rd filler；The surface contacted with the second filler of first filler and the surface contacted with the 3rd filler of the second filler are concave surfaces, and the surface contacted with the first filler of the second filler and the surface contacted with the second filler of the 3rd filler are convex surfaces.Bonnet includes stuffing seal described above.Regulating valve includes bonnet described above.The utility model the good sealed valve cap inner chamber of filler energy and valve rod, escapes medium, avoids environmental pollution and hazard to person under medium high-temperature condition.And the kinetic force of friction of filler is small, valve is operated steadily, precision height, and reduce the abrasion of executing agency, increase the service life of valve.
Description
Technical field
It the utility model is related to valve seal technical field, more particularly to a kind of stuffing seal, the valve for having the device
Cover and have the regulating valve of the bonnet.
Background technology
Regulating valve is after a period of time is run, valve rod friction filler, if filler deformation is small, i.e., the energy of automatic compensation abrasion
Power is inadequate, or the thrust deficiency of the bolt of the hold-down grid of pressure filler, nut, and the medium in regulating valve will be with valve rod
Motion escaped into air.
Medium in existing regulating valve especially in high temperature adjustable valve escapes that situation is serious, because the valve of generally use
The instrument of sealing, it is to use graphite packing or graphite impregnation packing, its deflection is small and frictional force is big, can abrade valve rod, influences
The service life of valve rod.
Therefore, existing regulating valve has many defects, and frictional force is big at its filler, can seriously abrade valve rod, filler is certainly
Dynamic compensation wear resistance can not enough cause medium to escape, and medium can cause personal injury, atmosphere pollution, property loss after escaping,
So as to influence the service life of valve.
Utility model content
The technical problems to be solved in the utility model is to overcome filler in high temperature valve running in the prior art
The problem of with valve rod frictional force, the defects of stability that valve uses difference and higher cost, there is provided a kind of stuffing seal, have
The bonnet of the device and the regulating valve for having the bonnet.
The utility model is that solve above-mentioned technical problem by following technical proposals：
A kind of stuffing seal, it is in an inner chamber of a bonnet and is placed on through on a valve rod of the inner chamber,
The stuffing seal includes：One first filler；One second filler；One the 3rd filler；Along along the direction of the valve rod, institute
The second filler is stated to be located between first filler and the 3rd filler；First filler contacts with second filler
Surface and the surface contacted with the 3rd filler of second filler be concave surface, second filler with described
The surface of one filler contact and the surface contacted with second filler of the 3rd filler are convex surfaces.
It is preferred that in stuffing seal of the present utility model, the stuffing seal also includes one first graphite
Ring and one second graphite annulus, first graphite annulus, second graphite are located on the valve rod, and first graphite annulus is set
The side relative with second filler of first filler is placed in, second graphite annulus is arranged at the 3rd filler
The side relative with second filler.
It is preferred that in stuffing seal of the present utility model, first graphite annulus with the first filler phase
To side on be provided with a guide pipe, the guide pipe is placed on the valve rod.
It is preferred that in stuffing seal of the present utility model, the guide pipe it is relative with first graphite annulus
Side on be provided with a hold-down grid, the valve rod passes through the hold-down grid, and the hold-down grid passes through an adjusting means
It is connected with the bonnet.
It is preferred that in stuffing seal of the present utility model, the adjusting means includes a bolt and a nut, institute
Bonnet described in bolt connection and the hold-down grid are stated, the nut is in one relative with the guide pipe of the hold-down grid
Side and the bolt connection.
It is preferred that in stuffing seal of the present utility model, one is additionally provided between the guide pipe and the valve rod
Pilot bushing.
It is preferred that in stuffing seal of the present utility model, first graphite annulus and second graphite annulus are
Woven graphite ring.
It is preferred that in stuffing seal of the present utility model, the convex surface is the surface that angle is 100 °, described recessed
Face is the surface that angle is 90 °.
It is preferred that in stuffing seal of the present utility model, first filler and the 3rd filler are by graphite
Band is interior plus steel wire winding forms.
It is preferred that in stuffing seal of the present utility model, second filler is worked out including four by graphite tape
The filler unit formed.
A kind of bonnet, it includes stuffing seal as described above.
A kind of regulating valve, it includes bonnet as described above.
On the basis of common sense in the field is met, above-mentioned each optimum condition, can be combined, produce the utility model respectively compared with
Good example.Positive effect of the present utility model is：
Stuffing seal of the present utility model, there is the bonnet of the device and have the regulating valve of the bonnet, pass through filler
The improvement of material, structure, processing technology causes under medium high-temperature condition, filler can sealed valve cap inner chamber and valve rod well,
Medium is escaped, avoid environmental pollution and hazard to person.And the kinetic force of friction of filler is small so that valve operates steadily,
Precision is high, and reduces the abrasion of executing agency, adds the service life of valve.
Brief description of the drawings
Fig. 1 be the embodiment of the utility model one stuffing seal in the first filler, the second filler and the 3rd filler not
Cross-sectional view during compression.
Fig. 2 is the stuffing seal of the embodiment of the utility model one in the first filler, the second filler and the 3rd filler pressure
Cross-sectional view during contracting.
Reference：
1- bonnets, 11- inner chambers；
2- valve rods；
The fillers of 3- first；
The fillers of 4- second；
The fillers of 5- the 3rd；
The graphite annulus of 6- first；
The graphite annulus of 7- second；
8- guide pipes, 81- pilot bushings；
9- hold-down grids, 91- bolts, 92- nuts.
Embodiment
Name preferred embodiment, and become apparent from intactly illustrating the utility model with reference to accompanying drawing.
In description of the present utility model, it is to be understood that term " on ", " under ", "front", "rear", "left", "right",
The orientation or position relationship of the instruction such as " vertical ", " level ", " top ", " bottom ", " interior ", " outer " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of description the utility model and simplifies description, rather than indicates or imply signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.
As depicted in figs. 1 and 2, the utility model provides a kind of stuffing seal, and the structure is located at the one of a bonnet 1
In inner chamber 11 and it is placed on through on a valve rod 2 of the inner chamber 11, i.e., the bonnet 1 has an inner chamber 11, and a valve rod 2 passes through should
Inner chamber 11, the stuffing seal are arranged in the inner chamber 11 and are enclosed on the outer surface of valve rod 2, and positioned at the outer surface of valve rod 2
Between the cavity wall of inner chamber 11, the stuffing seal is to be in close contact with the outer surface of valve rod 2 and the cavity wall of inner chamber 11, is risen
To the effect of sealing.
The stuffing seal includes：One first filler 3；One second filler 4；One the 3rd filler 5；Along the side of valve rod 2
Upwards, the second filler 4 is located between the first filler 3 and the 3rd filler 5；The surface contacted with the second filler 4 of first filler 3 with
And second the surface contacted with the 3rd filler 5 of filler 4 be concave surface, the surface contacted with the first filler 3 of the second filler 4 and
The surface contacted with the second filler 4 of 3rd filler 5 is convex surface.
Specifically, the first filler 3 uses convex configuration using concave inward structure, the 3rd filler 5, is propped up for the second filler 4
Support acts on.That is, the section of the first filler 3 is that lower surface has reeded similar rectangular shape, and the section of the second filler 4 is out
The inverted v-shaped of mouth down, the section of the 3rd filler 5 is the similar rectangular shape that upper surface has protuberance, to bonnet 1 and valve
Bar 2 is sealed, when have it is downward the first filler 3 and the 3rd filler 5 are unlikely to deform when forcing the sealing structure, with valve rod 2 and
Bonnet 1 contacts not closely, and centering filler plays support and a protective effect well, prevents inner chamber 11 of the medium from bonnet 1
Leaked with valve rod 2.After very little pretightning force is applied to the sealing structure, the inverted " V " mouth of the second filler 4 opens, in the first filler 3
In support with the second filler 4, the second filler 4 makees radial deformation, is in close contact with the inner chamber 11 of valve rod 2 and bonnet 1, works as valve rod
Both reach good sealing during 2 motion, and cause the kinetic force of friction very little between sealing structure and valve rod 2 again.Second filler 4 uses
Inverted " V " mouth designs, and its deflection is big, small with the contact area of valve rod 2, therefore the frictional force between sealing structure and valve rod 2 is small, Yi Mi
Envelope, significantly drop have supported escaping for medium in valve.In addition, because the frictional force between sealing structure and valve rod 2 is small, valve operation
Precision is high, operates steadily, reduces the power output of the executing agency of valve, improve valve service life, makes the operation of technique
It is more smooth.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, filler is close
Seal apparatus also includes one first graphite annulus 6 and one second graphite annulus 7, and the first graphite annulus 6, the second graphite annulus 7 are placed on valve rod 2,
First graphite annulus 6 is arranged at the side relative with the second filler 4 of the first filler 3, and the second graphite annulus 7 is arranged at the 3rd filler 5
The side relative with the second filler 4.Wherein, the section of the first graphite annulus 6 and the second graphite annulus 7 is rectangle, is unlikely to deform,
Contacted with valve rod 2 and bonnet 1 not close, primarily serve scraping and absorption.When in the motion process of valve rod 2, if any caused
Little particle, then the first graphite annulus 6 and the second graphite annulus 7 are scraped or sponged, in case it enters at the second filler 4, damage
The filler 4 of valve rod 2 and second.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, the first stone
A guide pipe 8 is provided with the side relative with the first filler 3 of black ring 6, guide pipe 8 is placed on valve rod 2, is mainly used in guiding
Valve rod 2 moves, and makes axle of its motion without departing from the inner chamber 11 of bonnet 1.Preferably, one is additionally provided between guide pipe 8 and valve rod 2 to lead
To bushing 81, strengthen the sealing effectiveness between guide pipe 8 and valve rod 2.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, guide pipe 8
The side relative with the first graphite annulus 6 on be provided with a hold-down grid 9, valve rod 2 passes through hold-down grid 9, and hold-down grid 9 passes through
One adjusting means is connected with bonnet 1.Preferably, adjusting means includes a bolt 91 and a nut 92, and bolt 91 connects the He of bonnet 1
Hold-down grid 9, nut 92 are connected in the side relative with guide pipe 8 of hold-down grid 9 with bolt 91.It is more than in medium temperature
At 180 DEG C~650 DEG C, when being especially used cooperatively with extension property bonnet 1, medium temperature is aoxidizing operation up to 650 DEG C
Under, maximum operation (service) temperature is 426 DEG C, and certain journey is tightened by the bolt 91 on the hold-down grid 9 of stuffing seal, nut 92
After degree, the inverted " V " mouth of the second filler 4 is opened, and bonnet 1 and valve rod 2 are sealed, so as to preventing medium from the cavity of bonnet 1 and
Leaked at valve rod 2.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, the first stone
The black graphite annulus 7 of ring 6 and second is woven graphite ring, and woven graphite ring plays a part of to scrape and absorbing medium small particles.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, convex surface is
Angle is 100 ° of surface, and concave surface is the surface that angle is 90 °.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, first fills out
The filler 5 of material 3 and the 3rd in graphite tape by adding steel wire winding to form.Specifically, the first filler 3 and the 3rd filler 5 use high density
Graphite tape in plus steel wire winding form so that, first filler 3 and threeth filler downward when forcing stuffing seal when having
5 are unlikely to deform, and are contacted with valve rod 2 and bonnet 1 not closely, and support and a protective effect well are played to the second filler 4.
As a preferred embodiment of the present utility model, in stuffing seal of the present utility model, second fills out
Material 4 includes four filler units worked out by graphite tape.Specifically, the second filler 4 with the winding of the graphite tape of low-density and
Into so that it is downward when forcing filler when having, because graphite tape density is low when the second filler 4 easily opens, it is radially expanded and is not easy
Fracture, therefore the second filler 4 deforms greatly, there is self-compensating function, it is possible to repeatedly apply pretightning force or during added with spring loaded oneself
Dynamic compensation deformation.
The utility model additionally provides a kind of bonnet, and it includes stuffing seal as described above.
The utility model additionally provides a kind of regulating valve, and it includes bonnet 1 as described above.
Stuffing seal of the present utility model, there is the bonnet of the device and have the regulating valve of the bonnet, pass through filler
The improvement of material, structure, processing technology causes under medium high-temperature condition, filler can sealed valve cap 1 well the He of inner chamber 11
Valve rod 2, escapes medium, avoids environmental pollution and hazard to person.And the kinetic force of friction of filler is small so that valve is run
Steadily, precision is high, and reduces the abrasion of executing agency, adds the service life of valve.
Although the foregoing describing specific embodiment of the present utility model, it will be appreciated by those of skill in the art that
This is merely illustrative of, and the scope of protection of the utility model is defined by the appended claims.Those skilled in the art
On the premise of without departing substantially from principle of the present utility model and essence, various changes or modifications can be made to these embodiments,
But these changes and modification each fall within the scope of protection of the utility model.
Claims (12)
1. a kind of stuffing seal, it is in an inner chamber of a bonnet and is placed on through on a valve rod of the inner chamber, its
It is characterised by, the stuffing seal includes：
One first filler；
One second filler；
One the 3rd filler；
Along along the direction of the valve rod, second filler is located between first filler and the 3rd filler；
The surface contacted with second filler of first filler and being connect with the 3rd filler for second filler
Tactile surface is concave surface, the surface contacted with first filler of second filler and the 3rd filler with described second
The surface of filler contact is convex surface.
2. stuffing seal as claimed in claim 1, it is characterised in that the stuffing seal also includes one first stone
Mo Huan and one second graphite annulus, first graphite annulus, second graphite are located on the valve rod, first graphite annulus
The side relative with second filler of first filler is arranged at, second graphite annulus is arranged at the 3rd filler
The side relative with second filler.
3. stuffing seal as claimed in claim 2, it is characterised in that first graphite annulus with first filler
A guide pipe is provided with relative side, the guide pipe is placed on the valve rod.
4. stuffing seal as claimed in claim 3, it is characterised in that the guide pipe with the first graphite annulus phase
To side on be provided with a hold-down grid, the valve rod passes through the hold-down grid, and the hold-down grid passes through a regulation dress
Put and be connected with the bonnet.
5. stuffing seal as claimed in claim 4, it is characterised in that the adjusting means includes a bolt and a spiral shell
Mother, bonnet described in the bolt connection and the hold-down grid, the nut is in the hold-down grid and the guide pipe phase
To side and the bolt connection.
6. stuffing seal as claimed in claim 3, it is characterised in that be additionally provided between the guide pipe and the valve rod
One pilot bushing.
7. stuffing seal as claimed in claim 2, it is characterised in that first graphite annulus and second graphite annulus
It is woven graphite ring.
8. stuffing seal as claimed in claim 1, it is characterised in that the convex surface is the surface that angle is 100 °, institute
It is the surface that angle is 90 ° to state concave surface.
9. stuffing seal as claimed in claim 1, it is characterised in that first filler and the 3rd filler are by stone
In ink ribbon plus steel wire winding forms.
10. stuffing seal as claimed in claim 1, it is characterised in that second filler includes four by graphite tape
The filler unit worked out.
11. a kind of bonnet, it is characterised in that it includes the stuffing seal described in just like any one of claim 1 to 10.
12. a kind of regulating valve, it is characterised in that it includes bonnet as claimed in claim 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720703472.2U CN206816944U (en) | 2017-06-16 | 2017-06-16 | Stuffing seal, the bonnet for having the device and the regulating valve for having the bonnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720703472.2U CN206816944U (en) | 2017-06-16 | 2017-06-16 | Stuffing seal, the bonnet for having the device and the regulating valve for having the bonnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206816944U true CN206816944U (en) | 2017-12-29 |
Family
ID=60760708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720703472.2U Active CN206816944U (en) | 2017-06-16 | 2017-06-16 | Stuffing seal, the bonnet for having the device and the regulating valve for having the bonnet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206816944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021165819A1 (en) * | 2020-02-17 | 2021-08-26 | Petrolvalves S.P.A. | Gasket with sealing rings |
-
2017
- 2017-06-16 CN CN201720703472.2U patent/CN206816944U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021165819A1 (en) * | 2020-02-17 | 2021-08-26 | Petrolvalves S.P.A. | Gasket with sealing rings |
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