CN208431374U - A kind of shaft seal based on liquid activation - Google Patents
A kind of shaft seal based on liquid activation Download PDFInfo
- Publication number
- CN208431374U CN208431374U CN201820914862.9U CN201820914862U CN208431374U CN 208431374 U CN208431374 U CN 208431374U CN 201820914862 U CN201820914862 U CN 201820914862U CN 208431374 U CN208431374 U CN 208431374U
- Authority
- CN
- China
- Prior art keywords
- lip
- foam body
- fluid
- rubber material
- gel rubber
- 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.)
- Expired - Fee Related
Links
- 230000004913 activation Effects 0.000 title claims abstract description 21
- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 239000006260 foam Substances 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 230000004888 barrier function Effects 0.000 claims abstract description 13
- 230000008602 contraction Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 230000002441 reversible effect Effects 0.000 abstract description 2
- 239000002352 surface water Substances 0.000 abstract description 2
- 230000002028 premature Effects 0.000 description 4
- 241001416181 Axis axis Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model relates to a kind of shaft seals based on liquid activation, including annular carrier, lip-type seal part and foam body, the foam body is to expand there are fluid, is contacted to pushing the lip portion of lip-type seal part at axis, relative to sealing annular carrier；The shaft seal of liquid activation passes through the gel rubber material with reversible effect in the utility model, when encountering fluid, fluid is penetrated into gel rubber material by the fluid orifice of the surface water barrier of gel rubber material, gel rubber material is according to the characteristic for encountering fluid expansion, to push the lip portion engagement shaft of lip-type seal part, to reach sealing effect relative to sealing annular carrier；Using water barrier setting fluid orifice by the way of, gel rubber material expansion when, fluid orifice is gradually increased, and realizes the effect of accelerated expansion；The annular retainer using gel rubber material is avoided, in the case where keeping function constant, simplifies structure.
Description
Technical field
The utility model relates to sealing element field more particularly to a kind of sealings based on liquid activation.
Background technique
Many industrial applications need axis to pass through another region that wall arrives at structure from a region of a structure.Axis is usually worn
The opening in wall is crossed, and is moved relative to the position of wall.For example, axis can around pass through surface axis axis and translate,
Rotation moves (for example, distortion, bending or stretching, extension) with some combinations for translating and rotating.Lead between axis and wall opening
It is commonly present spatial joint clearance, to facilitate this movement.
Fluid isolation between the region spaced apart of some application requirement structures for being related to shifting axle, so that the one of structure
Leakage or pollutant in a region will not gap between warp beam and wall opening and move on to or flow to the adjacent area of structure.Example
Such as, several bulkheads are passed through along the cardan shaft that the length of naval vessel hull extends, the different compartments on naval vessel are spaced apart by these bulkheads.
It prevents from the water in a compartment from leaking to advance through bulkhead along axis and enter in next compartment, this is for preventing hull from filling
It full water and prevents from flooding naval vessel being very crucial.Shaft seal is for example in axis relative to the axis opening rotation period in ship structure
Between be typically used in limitation fluid stream and from a compartment flow to next compartment.
ND type sealing element includes the O shape circle being positioned at rubber moulded parts-axis abutted surface, so that moulded parts and O
Shape circle is turned round as axis turns round.As bulkhead two sides on unequal pressure value caused by pressure between O shape circle two sides
Official post obtains rubber moulded parts and deforms and be pressed against shell, which is located in around opening.When moulded parts is pressed against shell, prevent
The rotation of mold.Stationary moulded parts produces the sealing to shell and O shape circle is forced to contact with axis.O shape circle
Also stop revolution, and generate the Fluid Sealing relative to axis.
One disadvantage of ND shape shaft seal is: when seal member dries out, the contact between seal member and axis is led
Seal member has been caused to lose too early due to caused by the relevant abrasion as caused by friction on sealing ring and rubber moulded parts
Effect.Current shipbuilder specifications usually require that: before sealing element engages axis, the pressure difference between the apparent surface of seal member is big
About 1/3psig(pounds/square inch, or about 234.1kg/m2) or water be about 8-9 inches (about 203-229mm).Water
Presence help to create the impermeable water termination between axis and seal member (for example, moulded parts and O shape circle).Exist only
In the case where 0.6-0.9 inches of (about 15.2-22.9mm) water, ND type sealing element has been activated (for example, engagement shaft).Sealing
Component engagement shaft when seal member is more dry, results in premature wear.In addition, close when being activated there are small amount water
When sealing component, the pressure difference for being not enough to generate liquid-tight seal is formed between opposite seal member.When not formed liquid-tight seal,
Slip associated with axis and seal member can exceed that shipbuilder specifications.
For example, shipbuilder specifications usually require that self-activating bulkhead sealing, with 0.5 U.S. of maximum leakage rate pint/
Hour (about 0.065ml/s).Self-activating shaft seal usually and is not required to after installing relative to axis and during leakage
Want manual operation (for example, adjustment of sealing element).For DDG type destroyer, the permitted maximum leakage rate of shipbuilder specifications is 1
U.S.'s pint/minute (about 0.1314ml/s).Activation of the sealing element in the case where existing compared with low voltage difference is (for example, above-mentioned beg for
Opinion by the early stage activation caused by opposite low water level) result in the accelerated wear test of seal member.The accelerated wear test of sealing element is led
The premature failure of sealing element has been caused, and and has not met shipbuilder specifications.
There is the demand for self-activating shaft seal as a result, the self-activation shaft seal is there are small amount fluids
In the case where will not premature activation.Furthermore there is the demand for being designed to inhibit the shaft seal of premature wear.There is also
Its design can be determined to scale effectively to seal the demand of the shaft seal of various diameters.For example, in the presence of for for compared with
The demand of the shaft seal of small diameter shaft design and the design of larger diameter axis, both can based on destroyer or commercial naval vessel and
It is found in various industrial applications.
Such as Chinese patent 201180043539.X one kind announced and a kind of axis bulkhead sealing system of liquid activation, axis
Bulkhead sealing system includes annular carrier, and annular carrier is fixed around the shaft relative to bulkhead and enclosing, and the axis extends through bulkhead
And annular carrier.Annular carrier supports a pair of of lip-type seal part, and each lip-type seal part limits the depression and between centers faced out
A part of the lip portion and adjacent carrier that separate.Foam body is arranged in the depression of each lip-type seal part.Each foam
Main body includes gel rubber material, and gel rubber material is configured to expand there are fluid, thus by the lip of lip-type seal part
Divide to push and be contacted at axis, relative to sealing annular carrier.Annular retainer is assembled in every side of annular carrier, uses
In the depression that foam body is maintained at each lip-type seal part.
It is formed in depression between the annular retainer and lip-type seal part used in above-mentioned patent, gel rubber material and the two
Between do not have relatively-stationary connection, gel rubber material can be expanded in any direction in depression, pass through the limit of annular retainer
Realize that gel can only increase annular retaining in the sealing of the expansion realization promotion lip-type seal part in single direction, such structure
Device makes structure more complicated, furthermore annular retainer be easy to cause in the case where seawater is repeatedly penetrated into and is precipitated loosen
Problem.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of shaft seals based on liquid activation, are able to solve one
As fluid seal the expanded of gel rubber material is prevented using mechanical retainer with the gel rubber material that is exposed in fluid
The problem of crossing displacement.
In order to solve the above technical problems, the technical solution of the utility model are as follows: a kind of shaft seal based on liquid activation,
Including annular carrier, the annular carrier is fixed around the shaft relative to bulkhead and enclosing, and the axis extends through bulkhead and annular carries
Body；The annular carrier include around axis and between centers separate to annular inner portion；Its innovative point is: including
Lip-type seal part, the annular carrier support a pair of of lip-type seal part, are arranged on every side to annular inner portion
There is one, each lip-type seal part limits between the lip portion that between centers separates and adjacent described a part to annular inner portion
The depression faced out out；U-shaped buckle slot is provided on the depression inner wall of the lip-type seal part；
Foam body, the foam body be arranged in the depression of each lip-type seal part and be provided in foam body with
The protrusion of the buckle slot cooperation of U-shaped；Foam body realizes foam body in depression by protrusion and the buckle slot cooperation of depression
Interior positioning is fixed；The foam body includes gel rubber material, and the gel rubber material is configured to swollen there are fluid
It is swollen, it is contacted to pushing the lip portion of lip-type seal part at axis, relative to sealing annular carrier.
Further, a water barrier is provided on the surface of the foam body and water barrier is evenly distributed there are several streams
Body orifice.
Further, the fluid orifice on the water barrier gradually increases and foam master with the expansion bore of foam body
Body is accelerated expansion state when inhaling fluid；Conversely, the diminution bore of foam body is gradually reduced and when foam body bank fluid is
Deceleration contraction state.
Further, the lip portion of each lip-type seal part includes the distal end being draped down, the distal end portion
Portion is sealed against the axis when gel rubber material expands.
Further, the distal end of each lip portion being draped down it is thin compared with the remainder of lip portion and
It is not hard.
Utility model has the advantages that
1) shaft seal of liquid activation is encountering fluid by the gel rubber material with reversible effect in the utility model
When, fluid is penetrated into gel rubber material by the fluid orifice of the surface water barrier of gel rubber material, gel rubber material according to encounter stream
The characteristic of body expansion, so that the lip portion engagement shaft of lip-type seal part is pushed, to reach sealing relative to sealing annular carrier
Effect；Using water barrier setting fluid orifice by the way of, gel rubber material expansion when, fluid orifice is gradually increased, realize plus
The effect of speed expansion；The annular retainer using gel rubber material is avoided, in the case where keeping function constant, simplifies structure.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is a kind of three-dimensional structure diagram of shaft seal based on liquid activation of the utility model.
Fig. 2 is a kind of cut-away view of shaft seal based on liquid activation of the utility model.
Fig. 3 is a kind of partial enlarged view of shaft seal based on liquid activation of the utility model.
Specific embodiment
The following examples can make professional and technical personnel that the utility model be more fully understood, but therefore will not
The utility model is limited among the embodiment described range.
A kind of shaft seal based on liquid activation as shown in Figure 1 to Figure 3, including annular carrier 1, the annular carrier
1 is fixed around the shaft relative to bulkhead and enclosing, and the axis extends through bulkhead and annular carrier 1；The annular carrier 1 includes surrounding
Axis and between centers separate to annular inner portion 11；Including
Lip-type seal part 2, the annular carrier supports a pair of of lip-type seal part 2, on every side to annular inner portion 11
Be provided with one, each lip-type seal part 2 the lip portion separated between centers and adjacent described a part to annular inner portion it
Between limit the depression 21 faced out；U-shaped buckle slot 22 is provided on the depression inner wall of the lip-type seal part.
Foam body 3, the foam body 3 are arranged in the depression 21 of each lip-type seal part and are arranged in foam body
There is the protrusion with the cooperation of the buckle slot 22 of U-shaped；Foam body 3 realizes foam master by protrusion and the cooperation of buckle slot 22 of depression
Positioning of the body 3 in depression 21 is fixed；The foam body 3 includes gel rubber material, and the gel rubber material is configured to the presence of stream
It expands in the case where body, is contacted to pushing the lip portion of lip-type seal part 2 at axis, to be carried relative to sealing annular
Body.
It is provided with a water barrier on the surface of foam body 3 and water barrier is evenly distributed there are several fluid orifices.
Fluid orifice on water barrier gradually increases and when foam body inhales fluid is with the expansion bore of foam body
Accelerated expansion state；Conversely, the diminution bore of foam body is gradually reduced and is deceleration contraction state when foam body bank fluid.
The lip portion of each lip-type seal part 2 includes the distal end being draped down, and the distal end is in gel rubber material
The axis is sealed against when expansion.
The distal end of each lip portion being draped down is thin compared with the remainder of lip portion and not hard.
It should be understood by those skilled in the art that the present utility model is not limited to the above embodiments, above-described embodiment and
Only illustrate the principles of the present invention described in specification, on the premise of not departing from the spirit and scope of the utility model,
The utility model also has various changes and improvements, these changes and improvements both fall within the scope of the claimed invention
It is interior.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (5)
1. a kind of shaft seal based on liquid activation, including annular carrier, the annular carrier is relative to bulkhead and surrounds
Axis is fixed, and the axis extends through bulkhead and annular carrier；The annular carrier includes separating around axis and between centers inside
Loop section；It is characterized by comprising
Lip-type seal part, the annular carrier support a pair of of lip-type seal part, are provided with one on every side to annular inner portion
A, each lip-type seal part is limited between the lip portion that between centers separates and adjacent described a part to annular inner portion and is appeared
Outside depression；U-shaped buckle slot is provided on the depression inner wall of the lip-type seal part；
Foam body, the foam body are arranged in the depression of each lip-type seal part and are provided in foam body and U-shaped
The protrusion of the buckle slot cooperation of type；Foam body realizes foam body in depression by protrusion and the buckle slot cooperation of depression
Positioning is fixed；The foam body includes gel rubber material, and the gel rubber material is configured to expand there are fluid, from
And push the lip portion of lip-type seal part at contacting with axis, relative to sealing annular carrier.
2. a kind of shaft seal based on liquid activation according to claim 1, it is characterised in that: the foam body
It is provided with a water barrier on surface and water barrier is evenly distributed there are several fluid orifices.
3. a kind of shaft seal based on liquid activation according to claim 2, it is characterised in that: on the water barrier
Fluid orifice gradually increases and when foam body inhales fluid with the expansion bore of foam body for accelerated expansion state；Conversely,
The diminution bore of foam body is gradually reduced and is deceleration contraction state when foam body bank fluid.
4. a kind of shaft seal based on liquid activation according to claim 1, it is characterised in that: each lip type is close
The lip portion of sealing includes the distal end being draped down, and the distal end is sealed against described when gel rubber material expands
Axis.
5. a kind of shaft seal based on liquid activation according to claim 1, it is characterised in that: each lip portion
The distal end being draped down it is thin compared with the remainder of lip portion and not hard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820914862.9U CN208431374U (en) | 2018-06-13 | 2018-06-13 | A kind of shaft seal based on liquid activation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820914862.9U CN208431374U (en) | 2018-06-13 | 2018-06-13 | A kind of shaft seal based on liquid activation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431374U true CN208431374U (en) | 2019-01-25 |
Family
ID=65101278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820914862.9U Expired - Fee Related CN208431374U (en) | 2018-06-13 | 2018-06-13 | A kind of shaft seal based on liquid activation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208431374U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591469A (en) * | 2018-06-13 | 2018-09-28 | 南通朴和新材料科技有限公司 | A kind of shaft seal based on liquid activation |
-
2018
- 2018-06-13 CN CN201820914862.9U patent/CN208431374U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591469A (en) * | 2018-06-13 | 2018-09-28 | 南通朴和新材料科技有限公司 | A kind of shaft seal based on liquid activation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190125 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |