CN207814442U - Sealing mechanism - Google Patents
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- CN207814442U CN207814442U CN201820070756.7U CN201820070756U CN207814442U CN 207814442 U CN207814442 U CN 207814442U CN 201820070756 U CN201820070756 U CN 201820070756U CN 207814442 U CN207814442 U CN 207814442U
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- open cavity
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Abstract
The utility model provides a kind of sealing mechanism, is related to technical field of mechanical, and sealing mechanism provided by the utility model includes：Shell, gland, shaft, spring and W type elastic sealing rings, the open cavity that shell has section rounded, gland is connected to the open end of open cavity, shaft passes through open cavity and gland, it is gradually reduced from the open end of open cavity to the bottom end of open cavity, the sectional dimension in the space between shaft and open cavity side wall；W type elastic sealing rings are sheathed on shaft, spring is between W types elastic sealing ring and gland, spring is in compressive state, so that W type elastic sealing rings have the trend that move to the bottom end of open cavity, sealing mechanism provided by the utility model alleviate in the prior art metallic packing ring caused by wearing, corroding the technical issues of sealing performance reduction.
Description
Technical field
The utility model is related to technical field of mechanical, more particularly, to a kind of sealing mechanism.
Background technology
The cylindrical surface that the mechanical seal of common surface elastic metal sealing ring is used as being parallel to rotation axis is radially obturaged, and metal is close
The inside and outside sealing surface of the seal ring periphery with shaft (this shaft can be that revolving part can also be non-rotary static element) respectively
It is bonded with the inner cylinder face of shell, under the action of the screen resilience of the pressure of fluid and metallic packing ring, linear sealing is formed, with resistance
Fluid stopping body leaks.
Contact of the sealing surface of this common metal sealing ring with seal is single line contact sealing, and this metal is close
Seal ring generates annealing in the case of a high temperature to be made its metallic gold phase constitution change and its elasticity is made to reduce, if fluid has corrosion
Property, the sealing surface of metallic packing ring can be corroded, if shaft is revolving part, long-term work sealing surface can wear, go out
Existing case above can all be such that the sealing performance of metallic packing ring gradually reduces until sealing entirely ineffective.
Utility model content
The purpose of this utility model is to provide a kind of sealing mechanism, with alleviate in the prior art metallic packing ring because of mill
The technical issues of sealing performance reduces caused by damage, corrosion.
Sealing mechanism provided by the utility model includes：Shell, gland, shaft, spring and W type elastic sealing rings, it is described
The open cavity that shell has section rounded, the gland are connected to the open end of the open cavity, and the shaft passes through
The open cavity and the gland, and the axis direction of the shaft is identical as the axis direction of the open cavity, from institute
Open end to the bottom end of the open cavity for stating open cavity, space between the shaft and the open cavity side wall
Sectional dimension is gradually reduced；
The W types elastic sealing ring is sheathed on the shaft, inner sealing surface and the shaft of the W types elastic sealing ring
Circumference contact, the external seal face of the W types elastic sealing ring contacts with the side wall of the open cavity, the W types elasticity
The open end of sealing ring is opposite with the bottom end of the open cavity；
The spring between the W types elastic sealing ring and the gland, and respectively with the W types elastic sealing ring
It is contacted with the gland, the spring is in compressive state, so that the W types elastic sealing ring has to the open cavity
The trend of bottom end movement.
Further, from the open end of the open cavity to the bottom end of the open cavity, the diameter of the shaft by
It is cumulative big.
Further, from the open end of the open cavity to the bottom end of the open cavity, the open cavity it is straight
Diameter is gradually reduced.
Further, from the open end of the open cavity to the bottom end of the open cavity, the diameter of the shaft by
Cumulative big, the diameter of the open cavity is gradually reduced.
Further, the quantity of the spring is multiple, circumferentially-spaced distribution of multiple springs along the shaft.
Further, the spring includes cylinder helical spring, one end of the helical spring and the W types bullet
Property sealing ring contact, the other end contacts with the gland.
Further, the gland end face opposite with the helical spring is equipped with cylindrical groove, the number of the cylindrical groove
Amount is identical as the quantity of the helical spring；
The helical spring is oppositely arranged one by one with the cylindrical groove, helical spring one end opposite with the gland
In the cylindrical groove.
Further, gasket is equipped between the W types elastic sealing ring and the helical spring, the gasket is sheathed on institute
Shaft is stated, and can be along the relatively described shaft sliding of length direction of the shaft.
Further, the first sealing ring is equipped between the shell and the gland.
Further, the second sealing ring is equipped between the gland and the shaft.
The utility model embodiment provide sealing mechanism include：Shell, gland, shaft, spring and W type elastic packings
Ring, shell have a rounded open cavity in section, and gland is connected to the open end of open cavity, shaft pass through open cavity and
Gland, and the axis direction of shaft is identical as the axis direction of open cavity, from the open end of open cavity to open cavity
The sectional dimension of bottom end, the space between shaft and open cavity side wall is gradually reduced；W type elastic sealing rings are sheathed on shaft, W
The inner sealing surface of type elastic sealing ring and the circumference contact of shaft, the external seal faces of W type elastic sealing rings and open cavity
Side wall contacts, and the open end of W type elastic sealing rings is opposite with the bottom end of open cavity；Spring is located at W types elastic sealing ring and pressure
It between lid, and is contacted respectively with W types elastic sealing ring and gland, spring is in compressive state, so that W type elastic sealing rings have
The trend moved to the bottom end of open cavity.When W type bullet sealing rings occur abrasion, corrosion situations such as and so that its power in sealing contact is subtracted
Hour, the spring in compressive state makes W type elastic packing circumferential directions be moved close to the direction of open cavity bottom end, keeps W types elastic
The side in the external seal face and open cavity of the inner sealing surface of metallic packing ring and the periphery of shaft, W type surface elastic metal sealing rings
Wall keeps being bonded, to keep sealing more constant than sub-.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram for the sealing mechanism that the utility model embodiment provides；
Fig. 2 is the schematic cross-section of the W type elastic sealing rings for the sealing mechanism that the utility model embodiment provides；
Fig. 3 is the structural schematic diagram of the shell for the sealing mechanism that the utility model embodiment provides.
Icon：100- shells；110- sealed grooves；200- glands；210- cylindrical grooves；220- seal convexities；
300- shafts；400- springs；500-W type elastic sealing rings；600- gaskets；The first sealing rings of 700-；800- second is close
Seal.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Fig. 1 is the structural schematic diagram for the sealing mechanism that the utility model embodiment provides, as shown in Figure 1, the utility model
Embodiment provide sealing mechanism include：Shell 100, gland 200, shaft 300, spring 400 and W types elastic sealing ring 500, shell
The open cavity that body 100 has section rounded, gland 200 are connected to the open end of open cavity, and shaft 300 passes through opening empty
Chamber and gland 200, and the axis direction of shaft 300 is identical as the axis direction of open cavity, extremely from the open end of open cavity
The sectional dimension of the bottom end of open cavity, the space between shaft 300 and open cavity side wall is gradually reduced；
W types elastic sealing ring 500 is sheathed on shaft 300, the circle of the inner sealing surface and shaft 300 of W types elastic sealing ring 500
Circumferential surface contacts, and the external seal face of W types elastic sealing ring 500 is contacted with the side wall of open cavity, and W types elastic sealing ring 500 is opened
Mouth end is opposite with the bottom end of open cavity；
Spring 400 is located between W types elastic sealing ring 500 and gland 200, and respectively with W types elastic sealing ring 500 and pressure
Lid 200 contacts, spring 400 be in compressive state, so that W types elastic sealing ring 500 to the bottom end of open cavity with moving
Trend.
As shown in Fig. 2, the axial cross section of W types elastic sealing ring 500 is in W types, W types elastic sealing ring 500 is installed on out
When in mouth cavity, the opening of W types elastic sealing ring 500 is opposite with the bottom end of open cavity, and fluid is located at the bottom end of open cavity
Between W types elastic sealing ring 500, the pressure of fluid makes the inner sealing surface of W types elastic sealing ring 500 be bonded with shaft 300, W
The external seal face of type elastic sealing ring 500 is bonded with the side wall of open cavity, to play sealing function.
Further, W types elastic sealing ring 500 is made of nickel base superalloy, nickel base superalloy refer to be with nickel
Matrix (content is generally higher than 50%) has higher intensity and good anti-oxidant, fire-resistant within the scope of 650 DEG C -1000 DEG C
The high temperature alloy of gas corrosion ability.W types elastic sealing ring 500 is made of nickel base superalloy, can adapt to high temperature and high frequency vibrating
It is dynamic to wait environment.
In some embodiments, gradually increase from the open end of open cavity to the bottom end of open cavity, the diameter of shaft 300
Greatly.
As shown in Figure 1, from the open end of open cavity to the bottom end of open cavity, the circumference of shaft 300 is away from turning
The direction of 300 axis of axis tilts, to make the sectional dimension in the space between shaft 300 and open cavity side wall be gradually reduced.
As another embodiment, from the open end of open cavity to the bottom end of open cavity, the diameter of open cavity
It is gradually reduced.
As shown in figures 1 and 3, from the open end of open cavity to the bottom end of open cavity, the side wall of open cavity to by
The direction of nearly open cavity axis tilts, to keep the sectional dimension in the space between shaft 300 and open cavity side wall gradual
Reduce.
As another embodiment, from the open end of open cavity to the bottom end of open cavity, the diameter of shaft 300 by
Cumulative big, the diameter of open cavity is gradually reduced, to make the sectional dimension in the space between shaft 300 and open cavity side wall
It is gradually reduced.
Further, the quantity of spring 400 is multiple, circumferentially-spaced distribution of the multiple springs 400 along shaft 300.
Specifically, 400 equal one end of multiple springs is contacted with gland 200, the other end is contacted with W types elastic sealing ring 500, and
Vertically it is in compressive state.
When W types elastic sealing ring 500 is worn, multiple springs 400 in compressive state keep W type elasticity close simultaneously
Seal ring 500 to close to open cavity bottom end direction move, to make W types elastic sealing ring 500 and shaft 300 periphery and
The side wall of open cavity keeps fitting.
Further, multiple springs 400 around the shaft 300 axis be uniformly distributed.
It is in compressive state along the equally distributed multiple springs of the axis of shaft 300 400, when W types elastic sealing ring 500
Inner sealing surface or external seal face when wearing, multiple springs 400 in compressive state make W type elastic sealing rings simultaneously
500 move to the direction close to open cavity bottom end, and multiple springs 400 are uniformly distributed along the axis of shaft 300, keep W types elastic
Sealing ring 500 is more uniformly stressed, and prevents W types elastic sealing ring 500 from generating inclination in moving process.
In some embodiments, spring 400 can be cylindroid helical-coil compression spring, disk spring or wave mode spring etc., at this
In embodiment, spring 400 includes cylinder helical spring, one end of helical spring contacts with W types elastic sealing ring 500,
The other end is contacted with gland 200.
Specifically, the quantity of helical spring be it is multiple, multiple helical springs around the shaft 300 axis be uniformly distributed；It is multiple
Helical spring is vertically arranged, and is in compressive state, the upper end of the lower face and gland 200 of multiple helical springs
Face contacts, and the upper surface of multiple helical springs is contacted with the lower face of W types elastic sealing ring 500.
W types elastic sealing ring 500 is sheathed in shaft 300, and the helical spring in compressive state makes W type elastic sealing rings
500 have to the movement tendency close to open cavity bottom end, when W types elastic sealing ring 500 is worn, W type elastic packings
The radial dimension of ring 500 reduces, and coil spring urges W types elastic sealing ring 500 is moved to close to open cavity bottom end, due to certainly
The open end of open cavity to the bottom end of open cavity, the sectional dimension in the space between shaft 300 and open cavity side wall by
Decrescence small, the inner sealing surface of W types elastic sealing ring 500 is bonded with the periphery of shaft 300 again, W types elastic sealing ring 500
External seal face is bonded with the side wall of open cavity again, prevents W types elastic sealing ring 500 from influencing sealing effect because of abrasion.
Further, the quantity of helical spring can be two, three or four etc., in the present embodiment, helical spring
Quantity is four；Specifically, four helical springs around the shaft 300 axis be uniformly distributed, and be in compressive state.
When the inner sealing surface of W types elastic sealing ring 500 or external seal face are worn, four spiral shells for being in compressive state
Rotation spring makes W types elastic sealing ring 500 be moved to the direction close to open cavity bottom end simultaneously, and W types elastic sealing ring 500 is made to protect
It holds and is bonded with the side wall of the periphery of shaft 300 and open cavity.
Further, the end face opposite with helical spring of gland 200 be equipped with cylindrical groove 210, the quantity of cylindrical groove 210 with
The quantity of helical spring is identical；
Helical spring is oppositely arranged one by one with cylindrical groove 210, and helical spring one end opposite with gland 200 is located at cylindrical groove
In 210.
Specifically, in some embodiments, the quantity of cylindrical groove 210 can be two, three or four etc., in the present embodiment
In, the quantity of cylindrical groove 210 is four, and four cylindrical grooves 210 are uniformly distributed along the circumferential direction of gland 200；The diameter of cylindrical groove 210
Slightly larger than the outer diameter of helical spring, one end of helical spring is located in cylindrical groove 210.
One end of helical spring is set in cylindrical groove 210, prevents helical spring from generating mobile and influencing to push W type elasticity close
Seal ring 500.
Further, gasket 600 is equipped between W types elastic sealing ring 500 and helical spring, gasket 600 is sheathed on shaft
300, and can be slided with respect to shaft 300 along the length direction of shaft 300.
As shown in Figure 1, gasket 600 is located between helical spring and W types elastic sealing ring 500, helical spring passes through gasket
600 push W types elastic sealing ring 500, and W types elastic sealing ring 500 is made to be more uniformly stressed.
Further, the first sealing ring 700 is equipped between shell 100 and gland 200.
As shown in Figure 1, gland 200 is bolted with shell 100；As shown in figure 3, shell 100 is opposite with gland 200
End face be equipped with sealed groove 110；The end face opposite with shell 100 of gland 200 is close equipped with coordinating with sealed groove 110
Envelope protrusion 220, when gland 200 is covered on shell 100, seal convexity 220 is located in sealed groove 110；Seal convexity 220
Height be less than the depth of sealed groove 110, the first sealing ring 700 is located in sealed groove 110.Seal convexity 220 is by first
Sealing ring 700 is sealed in sealed groove 110.The setting of first sealing ring 700 realizes end face seal.
Further, the second sealing ring 800 is equipped between gland 200 and shaft 300.
As shown in Figure 1, gland 200 is equipped with the through-hole passed through for shaft 300, the side wall of through-hole is recessed equipped with annular
Slot, the second sealing ring 800 are located in annular groove, the circumference contact of the inner ring and shaft 300 of the second sealing ring 800.Second
The setting of sealing ring 800 realizes radial seal.
In some embodiments, the first sealing ring 700 and the second sealing ring 800 are high-temperature-resistant flexible graphite circle.
The utility model embodiment provide sealing mechanism include：Shell 100, gland 200, shaft 300, spring 400 and W
Type elastic sealing ring 500, the open cavity that shell 100 has section rounded, gland 200 are connected to the opening of open cavity
End, shaft 300 passes through open cavity and gland 200, and the axis direction of shaft 300 is identical as the axis direction of open cavity,
From the open end of open cavity to the bottom end of open cavity, the sectional dimension in the space between shaft 300 and open cavity side wall
It is gradually reduced；W types elastic sealing ring 500 is sheathed on shaft 300, inner sealing surface and the shaft 300 of W types elastic sealing ring 500
The external seal face of circumference contact, W types elastic sealing ring 500 is contacted with the side wall of open cavity, W types elastic sealing ring 500
Open end is opposite with the bottom end of open cavity；Spring 400 is located between W types elastic sealing ring 500 and gland 200, and respectively with W
Type elastic sealing ring 500 and gland 200 contact, and spring 400 be in compressive state, so that W types elastic sealing ring 500 is with to opening
The trend of the bottom end movement of mouth cavity.Its power in sealing contact is set to reduce when abrasion, corrosion occur for W type bullet sealing rings situations such as
When, the spring 400 in compressive state makes W types elastic sealing ring 500 be moved to the direction close to open cavity bottom end, makes W types
The inner sealing surface of surface elastic metal sealing ring and the periphery of shaft 300, the external seal face of W type surface elastic metal sealing rings and opening are empty
The side wall of chamber keeps being bonded, to keep sealing more constant than sub-.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of sealing mechanism, which is characterized in that including：Shell, gland, shaft, spring and W type elastic sealing rings, the shell
The open cavity that body has section rounded, the gland are connected to the open end of the open cavity, and the shaft passes through institute
Open cavity and the gland are stated, and the axis direction of the shaft is identical as the axis direction of the open cavity, described in
The open end of open cavity to the bottom end of the open cavity, section in the space between the shaft and the open cavity side wall
Face size is gradually reduced；
The W types elastic sealing ring is sheathed on the shaft, the circle of the inner sealing surface and the shaft of the W types elastic sealing ring
Circumferential surface contacts, and the external seal face of the W types elastic sealing ring is contacted with the side wall of the open cavity, the W types elastic packing
The open end of ring is opposite with the bottom end of the open cavity；
The spring between the W types elastic sealing ring and the gland, and respectively with the W types elastic sealing ring and institute
Gland contact is stated, the spring is in compressive state, so that the W types elastic sealing ring has to the bottom end of the open cavity
The trend of movement.
2. sealing mechanism according to claim 1, which is characterized in that empty from the open end of the open cavity to the opening
The diameter of the bottom end of chamber, the shaft gradually increases.
3. sealing mechanism according to claim 1, which is characterized in that from the open end of the open cavity to the opening
The diameter of the bottom end of cavity, the open cavity is gradually reduced.
4. sealing mechanism according to claim 1, which is characterized in that from the open end of the open cavity to the opening
The diameter of the bottom end of cavity, the shaft gradually increases, and the diameter of the open cavity is gradually reduced.
5. sealing mechanism according to claim 1, which is characterized in that the quantity of the spring is multiple, multiple bullets
Circumferentially-spaced distribution of the spring along the shaft.
6. sealing mechanism according to claim 5, which is characterized in that the spring includes cylinder helical spring,
One end of the helical spring is contacted with the W types elastic sealing ring, the other end is contacted with the gland.
7. sealing mechanism according to claim 6, which is characterized in that the gland end face opposite with the helical spring
It is equipped with cylindrical groove, the quantity of the cylindrical groove is identical as the quantity of the helical spring；
The helical spring is oppositely arranged one by one with the cylindrical groove, and helical spring one end opposite with the gland is located at
In the cylindrical groove.
8. sealing mechanism according to claim 6, which is characterized in that the W types elastic sealing ring and the helical spring
Between be equipped with gasket, the gasket is sheathed on the shaft, and can be along the relatively described shaft sliding of length direction of the shaft.
9. sealing mechanism according to claim 1, which is characterized in that it is close to be equipped with first between the shell and the gland
Seal.
10. sealing mechanism according to claim 1, which is characterized in that be equipped with second between the gland and the shaft
Sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820070756.7U CN207814442U (en) | 2018-01-15 | 2018-01-15 | Sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820070756.7U CN207814442U (en) | 2018-01-15 | 2018-01-15 | Sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207814442U true CN207814442U (en) | 2018-09-04 |
Family
ID=63325998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820070756.7U Active CN207814442U (en) | 2018-01-15 | 2018-01-15 | Sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207814442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503183A (en) * | 2020-11-27 | 2021-03-16 | 中国航发四川燃气涡轮研究院 | Elastic sealing structure |
-
2018
- 2018-01-15 CN CN201820070756.7U patent/CN207814442U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503183A (en) * | 2020-11-27 | 2021-03-16 | 中国航发四川燃气涡轮研究院 | Elastic sealing structure |
| CN112503183B (en) * | 2020-11-27 | 2023-01-13 | 中国航发四川燃气涡轮研究院 | Elastic sealing structure |
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