CN105221747A - A kind of mechanical seal asbestos packing and preparation method thereof - Google Patents
A kind of mechanical seal asbestos packing and preparation method thereof Download PDFInfo
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- CN105221747A CN105221747A CN201510621268.1A CN201510621268A CN105221747A CN 105221747 A CN105221747 A CN 105221747A CN 201510621268 A CN201510621268 A CN 201510621268A CN 105221747 A CN105221747 A CN 105221747A
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Abstract
A kind of mechanical seal asbestos packing and preparation method thereof, described packing surface penetration has adhesive layer, and described adhesive is rubber-like adhesive.Its preparation method comprises the steps: 1) common asbestos packing be placed in the vibration of vibrator internal intermediate frequency or manually pat or roll extrusion, packing top layer is vibrated and shakes up, the packing width after shaking up is wide compared with life size 1 ~ 3 millimeter, makes packing surface form loosening layer; 2) asbestos packing after above-mentioned shaking up is placed in chlorinated hydrocabon to soak 30 ~ 60 minutes, makes packing loosen layer and be chlorinated hydrocarbon and immerse completely; 3) the selected Adhesive temp of heating is to dissolved state, by step 2) packing takes out and directly puts not in adhesive, putting busy 1 ~ 2 hour, take out and cool from chlorinated hydrocabon; 4) packing taken out in adhesive is placed in dimethylbenzene or toluene soaks 20 ~ 30 minutes, and taking-up is dried for subsequent use.
Description
Technical field
The present invention relates to sealing material, particularly relate to a kind of mechanical seal asbestos packing and preparation method thereof.
Background technique
In current all kinds of machinery static groove seal structures, the seal request of joint, boundary is all very high, and the sealing material generally used at present is packing form, inserts packing groove with packing multilayer, and end cap compresses the effect reaching sealing.
Existing packing is divided into soft shaping strip, and advantage has certain elastoplasticity, chemical stability, impermeability, self lubricity, temperature tolerance, easy accessibility, manufacture simple.Shortcoming be must cut in installation process, opposite joint, inlay, the operation such as compacting, installation requirement is high, loaded down with trivial details, does not reach technical requirements will inevitably leak if installed.In actual use, in the mode compressing end cap, packing is out of shape completely, thus reaches the object of sealing.
The material of packing is made by fibre strip bundle, lubricating grease, graphite, the mixture of lubricating grease and graphite is spread upon on fibre strip bundle uniformly, the shortcoming of this type of software sealing is the amount of deformation that lacks flexibility, lack continued tension, simultaneously due to its graphite material characteristic, in mechanical compaction process very easily impaired and produce leak space, cause working life shorter, especially serious for the occasion place with relative jitter.
Summary of the invention
The object of the present invention is to provide a kind of mechanical seal asbestos packing and preparation method thereof, it had both been applicable to static sealing occasion, was also applicable to the sealing of part with slight jitter.
For achieving the above object, technological scheme of the present invention is:
A kind of mechanical seal asbestos packing, it is characterized in that, described packing surface penetration has adhesive layer, and described adhesive is rubber-like adhesive.
Preferably, described rubber-like adhesive comprises neoprene, nitrile butadiene rubber, styrene butadiene rubber or butyl rubber adhesive.
Preferably, the thickness of described adhesive layer is 2 ~ 3 millimeters.
The preparation method of mechanical seal asbestos packing of the present invention, it comprises the steps:
1) common asbestos packing be placed in vibrator internal vibration or manually pat or roll extrusion, packing top layer is vibrated and shakes up, the packing width after shaking up is wide compared with life size 1 ~ 3 millimeter, makes packing surface form loosening layer;
2) asbestos packing after above-mentioned shaking up is placed in chlorinated hydrocabon to soak 30 ~ 60 minutes, makes packing loosen layer and be chlorinated hydrocarbon and immerse completely;
3) the selected Adhesive temp of heating is to dissolved state, by step 2) packing takes out and directly puts not in adhesive, putting busy 1 ~ 2 hour, take out and cool from chlorinated hydrocabon;
4) packing taken out in adhesive is placed in dimethylbenzene or toluene soaks 20 ~ 30 minutes, and taking-up is dried for subsequent use.
In preparation method of the present invention:
1) common asbestos packing be placed in vibrator internal vibration or manually pat or roll extrusion, packing top layer is vibrated and shakes up, the packing width after shaking up is compared with the wide 1-3 millimeter of life size.
The object of this step is that commercial packing surface is formed loosens layer, makes the establishment density on packing surface reduce, is easy to the enforcement of lower step operation.
2) asbestos packing after above-mentioned shaking up is placed in chlorinated hydrocabon and soaks 30-60 minute, make packing layer of shaking up be chlorinated hydrocarbon and immerse completely.
Chlorinated hydrocabon is a kind of solvent of adhesive, and is the solvent melted completely, has very strong permeability, and it runs into adhesive can play diluting effect and the degree of depth is adsorbed in packing loosens layer.
3) the selected Adhesive temp of heating is to can stirring (dissolved state), by step 2) packing takes out and directly puts not in adhesive, putting busy 1-2 hour, take out and cool from chlorinated hydrocabon.
When packing is also put not in chlorinated hydrocabon, by adhesive heating for dissolving to can stirring, after determining to dissolve completely, the packing taken out in chlorinated hydrocabon is directly put not in adhesive, now chlorinated hydrocabon and adhesive reactive adsorption, the absorption of the adhesive degree of depth enters packing and loosens layer, and 1-2 hour (heated constant temperature) adsorbs completely afterwards, takes out the cooling of rear normal temperature.
4) packing taken out in adhesive is placed in dimethylbenzene or toluene soaks 20-30 minute, and taking-up is dried for subsequent use.
The object of this step eliminates the adhesive layer on packing surface, and expose packing braiding surface, in order to retain the adhesive layer in loosening layer, soak time is unsuitable long, 20-30 minute.
Beneficial effect of the present invention:
The present invention is applicable to the slot type static seal environment not only good seal performance of normal temperature packing mode, easy to operate, long service life, because packing inside has adhesive layer, compared with common traditional packing_seal, it has more the elastic deformation amount after pressurized and not yielding, obviously can extend 2-3 working life doubly, and Master Cost is lower.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
Mechanical seal asbestos packing of the present invention, described packing surface penetration has adhesive layer, and described adhesive is rubber-like adhesive.
Preferably, described rubber-like adhesive comprises neoprene, nitrile butadiene rubber, styrene butadiene rubber or butyl rubber adhesive.The thickness of described adhesive layer is 2 ~ 3 millimeters.
The preparation method of mechanical seal asbestos packing of the present invention, it comprises the steps:
1) common asbestos packing be placed in the vibration of vibrator internal intermediate frequency or manually pat or roll extrusion, packing top layer is vibrated and shakes up, the packing width after shaking up is wide compared with life size 1 ~ 3 millimeter, makes packing surface form loosening layer;
2) asbestos packing after above-mentioned shaking up is placed in chlorinated hydrocabon to soak 30 ~ 60 minutes, makes packing layer of shaking up be chlorinated hydrocarbon and immerse completely;
3) the selected Adhesive temp of heating is to can stirring and dissolved state, by step 2) packing takes out and directly puts not in adhesive, putting busy 1 ~ 2 hour, take out and cool from chlorinated hydrocabon;
4) packing taken out in adhesive is placed in dimethylbenzene or toluene soaks 20 ~ 30 minutes, and taking-up is dried for subsequent use.
Embodiment
Prepare common 10mm asbestos packing, do relaxation processes, make the packing size after relaxing to 12mm, for subsequent use; Select to put into chlorinated hydrocabon in container, packing is put and does not have wherein 30-60 minute, make packing loosen layer to be chlorinated hydrocarbon and to immerse completely, when packing is also put not in chlorinated hydrocabon, the section of neoprene sizing material is placed in still device and is heated to 48-52 degree, being dissolved to can stirring, after determining to dissolve completely, the packing taken out in chlorinated hydrocabon is directly put not in adhesive, now chlorinated hydrocabon and adhesive reactive adsorption, the absorption of the adhesive degree of depth enters packing and loosens layer, and 1-2 hour (heated constant temperature) adsorbs completely afterwards, takes out the cooling of rear normal temperature; The packing taken out in adhesive is placed in dimethylbenzene or toluene soaks 20-30 minute, eliminates the adhesive layer on packing surface, and expose packing braiding surface, in order to retain the adhesive layer in loosening layer, soak time is unsuitable long, 20-30 minute.
Claims (4)
1. a mechanical seal asbestos packing, is characterized in that, described packing surface penetration has adhesive layer, and described adhesive is rubber-like adhesive.
2. mechanical seal asbestos packing as claimed in claim 1, it is characterized in that, described rubber-like adhesive comprises neoprene, nitrile butadiene rubber, styrene butadiene rubber or butyl rubber adhesive.
3. mechanical seal asbestos packing as claimed in claim 1, it is characterized in that, the thickness of described adhesive layer is 2 ~ 3 millimeters.
4. the preparation method of the mechanical seal asbestos packing according to any one of claims 1 to 3, it is characterized in that, it comprises the steps:
1) common asbestos packing be placed in vibrator internal vibration or manually pat or roll extrusion, packing top layer is vibrated and shakes up, the packing width after shaking up is wide compared with life size 1 ~ 3 millimeter, makes packing surface form loosening layer;
2) asbestos packing after above-mentioned shaking up is placed in chlorinated hydrocabon to soak 30 ~ 60 minutes, makes packing loosen layer and be chlorinated hydrocarbon and immerse completely;
3) the selected Adhesive temp of heating is to dissolved state, by step 2) packing takes out and directly puts not in adhesive, putting busy 1 ~ 2 hour, take out and cool from chlorinated hydrocabon;
4) packing taken out in adhesive is placed in dimethylbenzene or toluene soaks 20 ~ 30 minutes, and taking-up is dried for subsequent use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621268.1A CN105221747A (en) | 2015-09-25 | 2015-09-25 | A kind of mechanical seal asbestos packing and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510621268.1A CN105221747A (en) | 2015-09-25 | 2015-09-25 | A kind of mechanical seal asbestos packing and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105221747A true CN105221747A (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510621268.1A Pending CN105221747A (en) | 2015-09-25 | 2015-09-25 | A kind of mechanical seal asbestos packing and preparation method thereof |
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| CN (1) | CN105221747A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500082A (en) * | 2020-04-29 | 2020-08-07 | 大庆油田有限责任公司 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
-
2015
- 2015-09-25 CN CN201510621268.1A patent/CN105221747A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111500082A (en) * | 2020-04-29 | 2020-08-07 | 大庆油田有限责任公司 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
| CN111500082B (en) * | 2020-04-29 | 2022-03-29 | 大庆油田有限责任公司 | Synthetic sealing filler special for water injection well test blowout prevention pipe and preparation method thereof |
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| C06 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |
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| WD01 | Invention patent application deemed withdrawn after publication |