CN205859158U - Axle class stuffing seal - Google Patents
Axle class stuffing seal Download PDFInfo
- Publication number
- CN205859158U CN205859158U CN201620632516.2U CN201620632516U CN205859158U CN 205859158 U CN205859158 U CN 205859158U CN 201620632516 U CN201620632516 U CN 201620632516U CN 205859158 U CN205859158 U CN 205859158U
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- CN
- China
- Prior art keywords
- axle
- gland
- filler
- stuffing seal
- filler casing
- 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.)
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Abstract
Axle class stuffing seal, this device includes: filler casing, at least part of length of the axle sealed extends through in the axial direction and forms space between the inner surface of described filler casing and the outer surface of described axle and described filler casing, and airtight and watertight padding is placed in described space and stacked distribution vertically；Gland, described gland is adjustably secured on described filler casing by gland fastening member, and the change of described gland position in the axial direction determines the upper limit in described space；End liner set, described end liner is sheathed on below described filler casing and fixes relative to described filler casing, the lower limit that described space has been determined above of described end liner set；Wherein, it is respectively equipped with elastic component between the described filler of stacked distribution vertically.Axle class stuffing seal of the present utility model, it is possible to reduce the dielectric leakage in axle class stuffing seal.
Description
Technical field
This utility model relates to sealing device field, more particularly to axle class stuffing seal.
Background technology
The structure sealing the soft packing radial contact seal typically all using axial compression of axle class, such as such as Fig. 1 institute
Show.This device is mainly made up of filler casing 1, gland 2, gland fastening member 3, filler 4, end liner set 7.Filler can be selected for dish
The materials such as root, moulding plastics circle, graphite circle, carbon fibers circle.Under installment state, such as when being installed in valve gear, this is close
Filler casing 1 in seal apparatus can be formed by valve body, and end liner set directly can be formed by bearing, and filler is placed in axle (or axle sleeve)
And between stuffing box (valve body).This traditional sealing structure, due to simple in construction, is suitably filled out as long as selecting by working condition requirement
Material type, just can apply, the most still be widely used.
But this traditional structure there is problems in that
1, filler radially enclasping force σrAlong with leave gland contact with filler formed sealed upper end mouth the degree of depth strengthen
And reduce, the seepage falloff curve contrast of medium p, two plots changes are to anti-(profile institute on the right side of such as Fig. 1
Showing, curve place coordinate origin is O, and depth coordinate axle is that h) medium permeates up the most from below and leaks；
2, enclasping force loads uneven, and the contact stress of sealed upper end mouth is excessive, and axle and the filler at this position are easy to wear, draw
Rise the radially enclasping force of the filler in stuffing box body lax and leak；
3, there is gap with coordinating of bearing in the axle owing to being sealed, and can produce certain when bearing is subject to bigger side force
Flexural deformation, now rotary shaft filler will be whirled up agitation effect and leak；
4, temperature influence and produce the additive in change in volume, the scaling loss of filler, filler and the volatilization of bonding agent, axle
With the frictional dissipation etc. of filler, cause enclasping force lax and leak.
Leak as it is shown in figure 1, this sealing structure unit is mainly produced by three kinds of approach:
A is from the slot leakage by axle side；
The B loose, the gap leakage by filler itself；
C is from the slot leakage of stuffing box body wall.
Therefore, for solving the problem above of conventional sealing apparatus, this area needs the axle class packing seal dress of a kind of improvement badly
Put.
Utility model content
The purpose of this utility model is to provide a kind of axle class stuffing seal, in order to reduce axle class stuffing seal
In dielectric leakage, more specifically: make device have self-compensating function；Change filler radially enclasping force σrAdd with the degree of depth
Greatly, i.e. enclasping force loads uneven problem；Increase filler radially enclasping force.
For achieving the above object, axle class stuffing seal of the present utility model, including filler casing, the axle sealed
At least partly length extends through in the axial direction and forms space between the inner surface of filler casing and the outer surface of axle and filler casing, close
Packing material is placed in space and stacked distribution vertically；Gland, gland is adjustably secured to filler by gland fastening member
On casing, the change of gland position in the axial direction determines the upper limit in space；End liner set, end liner is sheathed under filler casing
Just and fix relative to filler casing, the lower limit that space has been determined above of end liner set；Wherein, stacked distribution vertically
Elastic component it is respectively equipped with between filler.
Preferably, the rigidity of elastic component increases from upper strata to lower floor successively.
Preferably, the setting of elastic component makes, and by the filler of the elastic force effect of elastic component, presents substantially on radial section
Trapezoidal, generally trapezoidal shorter base is against the inner surface of filler casing, and generally trapezoidal longer base is against the appearance of axle
Face.
Preferably, elastic component is butterfly spring.
This utility model simple in construction；Store elastic potential energy after elastic component compression thus realize self-compensating function；Further
Ground, the variable rigidity of elastic component, filler enclasping force can be made uniform；Additionally, can be by trapezoidal for filler radial section boil down to thus increase
Big enclasping force.
Accompanying drawing explanation
Detailed description of the invention of the present utility model is illustrated, in the accompanying drawings referring now to the following drawings:
Fig. 1 is the cross-sectional schematic of the axle class stuffing seal of prior art；
Fig. 2 is the cross-sectional schematic according to axle class stuffing seal of the present utility model, and wherein left side shows gland
State before compression, right side illustrates the state after related device gland compression.
Detailed description of the invention
In preferred embodiment of the present utility model as shown in Figure 2, axle class stuffing seal includes filler casing 1, pressure
Lid 2, gland fastening member 3, filler 4, elastic component 5, end liner set 7.Wherein, the partial-length of axle 6 can extend through filler casing 1 and axle
Form to place the space of filler 4 between outer surface and the inner surface of filler casing 1 of 6.The material of filler 4 can include dish
Root, moulding plastics circle, graphite circle, carbon fibers circle or other material making filler commonly used in the art.Filler 4 can be in filler
Ring or the form of insertion ring.Filler 4 is along the axially stacked distribution of axle 6, and filler 4 is almost full with axle 6 the most diametrically
Space between the inner surface of outer surface and filler casing 1.In the axial direction, the upper end in space of filler 4 is placed by gland 2 times
End limits, and the lower end in this space is limited by the upper end of end liner set 7.End liner set 7 positions in the axial direction can be filled out with being located at by it
The cooperation of the stage portion of hopper body 1 and fixed.End liner set 7 is alternatively embodied as bearing or other can play spacing filler sky
Between the device of lower limit or structure.Gland 2 can move down thus the most in the axial direction near end liner set 7 until by filler 4 institute
Implant in space compresses, or moves up thus away from end liner set 7 until departing from filler casing 1.Gland 2 is in the axial direction
Position fixed by gland fastening member 3.Preferably, gland fastening member 3 can farther include stud 31 and nut 32, and logical
The through hole of the flange part of overpressure cap 2 and the screw-threaded counterbore of the upper surface corresponding position of filler casing 1 thus realize gland
Fixing.Alternatively, gland fastening member 3 also can be realized by the fastening means of bolt, screw or other equivalent.Gland 2 is alternatively
The device that can play spacing filling space upper limit for other or structure, and similar device or structure can be configured to relatively fill out
Hopper body can not adjust.Alternatively, end liner set 7 and gland 2 can be integrated, and/or are integrated with filler casing.
The elastic component of preferably butterfly spring can be increased between insertion ring.Alternatively, elastic component can include spring, rubber ring etc.
The article that can store elastic potential energy commonly used in other this area.Wherein, the elastic component quantity between insertion ring is preferred
It it is two.Make gland 2 move axially downwards by gland fastening member 3, thus elastic component 5 is compressed and stores elastic potential
Can, thus the self-compensating effect of the system that reaches.
In another preferred embodiment of the present utility model, it is preferable that the rigidity of elastic component 5 increases from upper strata to lower floor successively
Greatly, enclasping force is made to be more uniformly distributed.
In another preferred embodiment of the present utility model, it is preferable that the radial section of filler 4 is pressed into generally trapezoidal,
Add axle side enclasping force.Specifically, generally trapezoidal shorter base (the upper end) can be against the inner surface of filler casing 1, and greatly
Causing trapezoidal longer base (going to the bottom) can be against the outer surface of axle 6.
Above in association with concrete preferred embodiment, design of the present utility model is explained in detail, but for this area
For those of ordinary skill, the further modifications and variations in this utility model concept will it is to be understood that these
Amendment and deformation all fall within the protection domain of appended claims.
Claims (6)
1. an axle class stuffing seal, described device includes filler casing, and at least part of length of the axle sealed is at axle
Upwards extending through formation space between the inner surface of described filler casing and the outer surface of described axle and described filler casing, sealing is filled out
Material is placed in described space and stacked distribution vertically；Gland, described gland is adjustably secured to by gland fastening member
On described filler casing, the change of described gland position in the axial direction determines the upper limit in described space；End liner set, described
End liner is sheathed on below described filler casing and fixes relative to described filler casing, and being determined above of described end liner set is described
The lower limit in space；Wherein, it is respectively equipped with elastic component between the described filler of stacked distribution vertically.
Axle class stuffing seal the most according to claim 1, it is characterised in that the rigidity of described elastic component from upper strata to
Lower floor increases successively.
Axle class stuffing seal the most according to claim 1, it is characterised in that the setting of described elastic component makes, and is subject to
The described filler of the elastic force effect of described elastic component, presents generally trapezoidal on radial section, the described generally trapezoidal shorter end
While against the inner surface of described filler casing, and described generally trapezoidal longer base is against the outer surface of described axle.
Axle class stuffing seal the most according to claim 1, it is characterised in that described elastic component is butterfly spring.
Axle class stuffing seal the most according to claim 1, it is characterised in that described gland fastening member includes bolt
And nut.
Axle class stuffing seal the most according to claim 1, it is characterised in that described end liner set is bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620632516.2U CN205859158U (en) | 2016-06-21 | 2016-06-21 | Axle class stuffing seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620632516.2U CN205859158U (en) | 2016-06-21 | 2016-06-21 | Axle class stuffing seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205859158U true CN205859158U (en) | 2017-01-04 |
Family
ID=57637085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620632516.2U Active CN205859158U (en) | 2016-06-21 | 2016-06-21 | Axle class stuffing seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205859158U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237463A (en) * | 2020-02-18 | 2020-06-05 | 江苏丰尚智能科技有限公司 | Shaft end sealing mechanism |
| CN114871455A (en) * | 2022-03-31 | 2022-08-09 | 南通市力沛流体阀业有限公司 | Valve filler instrument and removing method thereof |
-
2016
- 2016-06-21 CN CN201620632516.2U patent/CN205859158U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237463A (en) * | 2020-02-18 | 2020-06-05 | 江苏丰尚智能科技有限公司 | Shaft end sealing mechanism |
| CN114871455A (en) * | 2022-03-31 | 2022-08-09 | 南通市力沛流体阀业有限公司 | Valve filler instrument and removing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |