CN206988432U - A kind of flow blockage device of mechanical seal - Google Patents
A kind of flow blockage device of mechanical seal Download PDFInfo
- Publication number
- CN206988432U CN206988432U CN201720921769.6U CN201720921769U CN206988432U CN 206988432 U CN206988432 U CN 206988432U CN 201720921769 U CN201720921769 U CN 201720921769U CN 206988432 U CN206988432 U CN 206988432U
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- CN
- China
- Prior art keywords
- agitating shaft
- pressure source
- elastomer
- flow blockage
- blockage device
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Abstract
The utility model belongs to technical field of sealing technology, more particularly to a kind of flow blockage device of mechanical seal, flow blockage device is arranged on the periphery of agitating shaft, flow blockage device includes mounting flange, certain interval between mounting flange and agitating shaft, seal groove is provided with mounting flange, elastomer is provided with seal groove, mounting flange enters pipeline provided with least one pressure source, and deformed dilation is and the second state of formation sealing surface between agitating shaft after elastomer has with the first state in agitating shaft holding gap and enters pipeline air-inlet by pressure source.In normal work, the rotation that being not pressurized makes flow blockage device not to agitating shaft has an impact, when mechanical seal, which is failed, to be needed to change or repair, enter to pressure source in pipeline and enter gas or liquid, distortional elastomer is set to expand and form sealing surface between agitating shaft, the effect of stifled stream is formed, container contents discharge leakage would not be made when changing or repairing the mechanical seal above flow blockage device, avoiding forming production and environment influences.
Description
Technical field
The utility model belongs to technical field of sealing technology, and in particular to a kind of flow blockage device of mechanical seal.
Background technology
Chemical industry, toxic industrial production stirring pressure vessel on, mechanical seal as stir sealing be it is essential,
At present when mechanical seal, which is failed, to be needed to change or repair, often to stop production, material and pressure in emptying receptacles, to production and ring
Bring considerable influence in border.
The content of the invention
The utility model is in view of the above-mentioned problems, provide a kind of flow blockage device of mechanical seal.
Technical solution adopted in the utility model is as follows：A kind of flow blockage device of mechanical seal, the flow blockage device are set
Put includes mounting flange in the periphery of agitating shaft, the flow blockage device, between the mounting flange and the agitating shaft necessarily
Interval, the mounting flange is interior to be provided with seal groove, elastomer is provided with the seal groove, the mounting flange is provided with least one
Individual pressure source enters pipeline, and the elastomer, which has, to be kept the first state in gap with agitating shaft and entered by pressure source
Deformed dilation after pipeline air-inlet and between agitating shaft formed sealing surface the second state.
The elastomer is connected with a rigid positioning sleeve, and it is variable that size is formed between the elastomer and positioning sleeve
Inflatable chamber, the positioning sleeve are provided with venting channels, and the both ends of the venting channels are respectively communicated with pressure source into pipeline and filled
Air cavity, inflated by pressure source into pipeline, gas enters in inflatable chamber through venting channels, inflatable chamber is become big, elastomer with
Agitating shaft is bonded to form sealing surface.
The positioning sleeve is provided with the first bulge loop, and the outer wall of first bulge loop is bonded with the inwall of the seal groove, institute
Venting channels are stated to be arranged in the first bulge loop and with pressure source into pipeline be connected.
The positioning sleeve is provided with two the second bulge loops, and two second bulge loops are respectively positioned at the upper of first bulge loop
Side and lower section and it is symmetrical arranged on the second bulge loop, the external diameter of second bulge loop is less than the external diameter of the first bulge loop, and described the
Groove is formed between one bulge loop and the second bulge loop, the elastomer is annular and section is c-type, the width of the elastomer boundary
Degree is more than the distance between the second bulge loop and seal groove inwall, and the elastomer boundary is spacing in groove, the positioning sleeve
Upper and lower ends and seal groove inwall or two second bulge loops shape is compressed to elastomer between the two with seal groove inwall
Into sealing surface, inflatable chamber is formed between the sealing surface of upper and lower two.
The venting channels are annular.
The venting channels are more than the pressure source into the position width that pipeline connects with pressure source and enter the interior of pipeline
Footpath.
The mounting flange lower end is provided with gland, and the mounting flange coordinates with gland forms seal groove, is formed to elasticity
Body and positioning sleeve it is spacing.
The agitating shaft that the flow blockage device includes being fixedly connected with the agitating shaft puts circle, and the mounting flange upper end is provided with
Put with the agitating shaft and enclose the stopper slot being adapted to, the agitating shaft is put circle and is arranged in stopper slot.
The beneficial effects of the utility model are as follows：Flow blockage device is arranged on below mechanical seal, in normal work, no
Inflation has an impact rotation of the flow blockage device not to agitating shaft, when mechanical seal, which is failed, to be needed to change or repair, to pressure
Source, which enters air inlet in pipeline, makes distortional elastomer expand and form sealing surface between agitating shaft, forms the effect of stifled stream, so,
Container contents discharge leakage would not be made when changing or repair again the mechanical seal above flow blockage device, avoided to production and ring
Border, which is formed, to be influenceed.
Brief description of the drawings
Fig. 1 is the structural representation of flow blockage device.
Fig. 2 is the enlarged diagram of A in Fig. 1.
In figure, 1, agitating shaft；2, mounting flange；201, pressure source enters pipeline；202, stopper slot；3, seal groove；4, bullet
Property body；5, agitating shaft puts circle；6, positioning sleeve；601, the first bulge loop；602, the second bulge loop；603, groove；604, venting channels；7,
Inflatable chamber；8, gland.
Embodiment
Below in conjunction with the accompanying drawings and embodiment, the utility model can be better described.
A kind of flow blockage device of mechanical seal, the flow blockage device are arranged on the periphery of agitating shaft 1, the flow blockage device bag
Mounting flange 2 is included, certain interval between the mounting flange 2 and the agitating shaft 1, the mounting flange 2 is interior to be provided with sealing
Groove 3, the seal groove 3 is interior to be provided with elastomer 4, and the mounting flange 2 enters pipeline 201 provided with least one pressure source,
The elastomer 4, which has, to be kept the first state in gap with agitating shaft 1 and is deformed after entering the air inlet of pipeline 201 by pressure source
Expand and the second state of sealing surface is formed between agitating shaft 1.Flow blockage device is arranged on below mechanical seal, in normal work
In work, the non-aerating rotation for making flow blockage device not to agitating shaft has an impact, when mechanical seal, which is failed, to be needed to change or repair,
Distortional elastomer is expanded into air inlet in pipeline to pressure source and sealing surface is formed between agitating shaft, form the work of stifled stream
With so, then container contents discharge leakage would not being made when changing or repair the mechanical seal above flow blockage device, avoided pair
Production and environment, which are formed, to be influenceed.
The elastomer 4 is connected with a rigid positioning sleeve 6, and big I is formed between the elastomer 4 and positioning sleeve 6
The inflatable chamber 7 of change, the positioning sleeve 6 are provided with venting channels 604, and the both ends of the venting channels 604 are respectively communicated with pressure source
Into pipeline 201 and inflatable chamber 7, inflated by pressure source into pipeline 201, gas enters inflatable chamber 7 through venting channels 604
It is interior, inflatable chamber 7 is become big, elastomer 4 is bonded to form sealing surface with agitating shaft 1.Also another embodiment, i.e. elastomer 4
As tire, provided with a valve, valve is connected with air inlet, and inflation can make elastomeric intumescent form sealing with agitating shaft
Face, but during normal operation, elastomer is likely to occur folding and has part to be bonded with agitating shaft, influences agitating shaft
Rotation, in addition, elastomer agitating shaft rotate during, also can Fast Wearing.And set rigid positioning sleeve can be to bullet
Property body form the effect of spacing and opening, prevent that elastomer from folding, make the elasticity under unaerated state with agitating shaft holding not
The state of fitting.
The positioning sleeve 6 is provided with the first bulge loop 601, the inwall of the outer wall of first bulge loop 601 and the seal groove 3
Fitting, the venting channels 604 are arranged in the first bulge loop 601 and are connected with pressure source into pipeline 201.Ensure fast aeration
Do not reveal.
The positioning sleeve 6 is provided with two the second bulge loops 602, and two second bulge loops 602 are located at described first respectively
It is symmetrical arranged above and below bulge loop 601 and on the second bulge loop 602, the external diameter of second bulge loop 602 is less than first
The external diameter of bulge loop 601, forms groove 603 between the bulge loop 602 of the first bulge loop 601 and second, the elastomer 4 for annular and
Section is c-type, and the width of the boundary of elastomer 4 is more than the distance between the second bulge loop 602 and the inwall of seal groove 3, described
The boundary of elastomer 4 is spacing in groove 603, upper and lower ends and the inwall of seal groove 3 or two described second of the positioning sleeve 6
Bulge loop 602 compresses to elastomer 4 between the two with the inwall of seal groove 3 and forms sealing surface, structure between the sealing surface of upper and lower two
Into inflatable chamber 7.By the design of the second bulge loop and elastomer shape allow elastomer positioning sleeve 6 and the inwall of seal groove 3 it
Between it is fixed and form the inflatable chamber 7 only connect with venting channels 604, so when senile abrasion, which occurs, for elastomer needs replacing,
Elastomer can only be changed.Also another embodiment is exactly that elastomer is adhered with positioning sleeve by adhesive, can both be consolidated
Surely the inflatable chamber 7 only connected with venting channels 604 can also be formed, but when elastomer generation senile abrasion needs to change,
With regard to needing to change together with positioning sleeve.
The venting channels 604 are annular.If venting channels 604 and cavernous structure, it is necessary to by venting channels
604 enter pipeline 201 with pressure source is aligned or venting channels 604 are covered more than pressure source into pipeline completely, but this
Kind mode is just needed to ensure that positioning sleeve is unable to turned position, and venting channels 604 are set into annular, even if positioning sleeve is using
Middle displacement can also ventilate.
The venting channels 604 are more than the pressure source into the position width that pipeline 201 connects with pressure source and enter pipe
The internal diameter in road 201., in use, may downward shift position, so design because elastomer has certain elasticity
It offset by that to enter the gas that is passed through of pipeline 201 by pressure source unaffected even if can ensure.
The lower end of mounting flange 2 is provided with gland 8, and the mounting flange 2 coordinates with gland 8 forms seal groove 3, formation pair
Elastomer 4 is spacing with positioning sleeve 6.Mounting flange 2 and gland 8 are set to split, so convenient installation positioning sleeve and elasticity
Body.Mounting flange 2 and gland 8 can also be set to integral, then positioning sleeve needs to be set to merge some splits for forming ring-type,
It could install, and install with elastomer and more bother together.
The agitating shaft that the flow blockage device includes being fixedly connected with the agitating shaft 1 puts circle 5, the upper end of mounting flange 2
5 stopper slots 202 being adapted to are enclosed provided with being put with the agitating shaft, the agitating shaft is put circle 5 and is arranged in stopper slot 202.If stir
It is larger to mix the weight of axle, mechanical seal dismounting can be played or repair and avoid agitating shaft by setting agitating shaft to put circle 5 and stopper slot 202
Drop in container.If the weight of agitating shaft is not very big, and the structure of equipment others structure such as agitating shaft bottom can
To meet the support weight to agitating shaft, then agitating shaft is put circle 5 and the structure of stopper slot 202 and can also be not provided with.
A kind of embodiment of the present utility model is the foregoing is only, is not used for limiting the scope of protection of the utility model；
The scope of protection of the utility model is limited by the claim in claims, and it is every made according to utility model it is equivalent
Change and modification, all within the protection domain of the utility model patent.
Claims (8)
1. a kind of flow blockage device of mechanical seal, the flow blockage device are arranged on agitating shaft（1）Periphery, it is characterised in that：Institute
Stating flow blockage device includes mounting flange（2）, the mounting flange（2）With the agitating shaft（1）Between certain interval, the peace
Fill flange（2）It is interior to be provided with seal groove（3）, the seal groove（3）It is interior to be provided with elastomer（4）, the mounting flange（2）It is provided with extremely
Few one pressure source enters pipeline（201）, the elastomer（4）Have and agitating shaft（1）Keep gap first state with
And pipeline is entered by pressure source（201）Deformed dilation after air inlet and and agitating shaft（1）Between formed sealing surface the second state.
2. the flow blockage device of mechanical seal according to claim 1, it is characterised in that：The elastomer（4）With one just
The positioning sleeve of property（6）Connection, the elastomer（4）With positioning sleeve（6）Between form the variable pressure chamber of size（7）, it is described fixed
Position set（6）It is provided with pressure source channels（604）, the pressure source channels（604）Both ends be respectively communicated with pressure source and enter pipeline
（201）And pressure chamber（7）, pipeline is entered by pressure source（201）Pressurization, pressure source is through pressure source channels（604）Into pressure
Chamber（7）It is interior, make pressure chamber（7）Become big, elastomer（4）With agitating shaft（1）Fitting forms sealing surface.
3. the flow blockage device of mechanical seal according to claim 2, it is characterised in that：The positioning sleeve（6）It is provided with the
One bulge loop（601）, first bulge loop（601）Outer wall and the seal groove（3）Inwall fitting, the pressure source channels
（604）It is arranged on the first bulge loop（601）It is interior and enter pipeline with pressure source（201）Linking.
4. the flow blockage device of mechanical seal according to claim 3, it is characterised in that：The positioning sleeve（6）It is provided with two
Individual second bulge loop（602）, two second bulge loops（602）It is located at first bulge loop respectively（601）Above and below simultaneously
And on the second bulge loop（602）It is symmetrical arranged, second bulge loop（602）External diameter be less than the first bulge loop（601）External diameter, institute
State the first bulge loop（601）With the second bulge loop（602）Between form groove（603）, the elastomer（4）It is C for annular and section
Type, the elastomer（4）The width of boundary is more than the second bulge loop（602）With seal groove（3）The distance between inwall, the bullet
Property body（4）Boundary is spacing in groove（603）It is interior, the positioning sleeve（6）Upper and lower ends and seal groove（3）Inwall or two institutes
State the second bulge loop（602）With seal groove（3）Inwall is to elastomer between the two（4）Compression forms sealing surface, upper and lower two
Pressure chamber is formed between sealing surface（7）.
5. the flow blockage device of the mechanical seal according to Claims 2 or 3, it is characterised in that：The pressure source channels（604）
For annular.
6. the flow blockage device of mechanical seal according to claim 5, it is characterised in that：The pressure source channels（604）With
Pressure source enters pipeline（201）The position width to connect enters pipeline more than the pressure source（201）Internal diameter.
7. the flow blockage device of mechanical seal according to claim 2, it is characterised in that：The mounting flange（2）Lower end is set
There is gland（8）, the mounting flange（2）With gland（8）Coordinate and form seal groove（3）, formed to elastomer（4）With positioning sleeve
（6）It is spacing.
8. the flow blockage device of mechanical seal according to claim 1, it is characterised in that：The flow blockage device include with it is described
Agitating shaft（1）The agitating shaft being fixedly connected puts circle（5）, the mounting flange（2）Upper end is provided with puts circle with the agitating shaft（5）It is suitable
The stopper slot matched somebody with somebody（202）, the agitating shaft puts circle（5）It is arranged on stopper slot（202）It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921769.6U CN206988432U (en) | 2017-07-27 | 2017-07-27 | A kind of flow blockage device of mechanical seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720921769.6U CN206988432U (en) | 2017-07-27 | 2017-07-27 | A kind of flow blockage device of mechanical seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206988432U true CN206988432U (en) | 2018-02-09 |
Family
ID=61417196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720921769.6U Active CN206988432U (en) | 2017-07-27 | 2017-07-27 | A kind of flow blockage device of mechanical seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206988432U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506497A (en) * | 2018-07-06 | 2018-09-07 | 中国科学院上海高等研究院 | A kind of plastic seal ring and the shutdown sealing device with plastic seal ring |
| CN110615296A (en) * | 2019-10-12 | 2019-12-27 | 无锡灵鸽机械科技股份有限公司 | Disc feeding machine and using method thereof |
| CN110925434A (en) * | 2019-11-27 | 2020-03-27 | 西安航天动力研究所 | Ultra-low temperature high-bearing bidirectional sealing device |
| CN111795056A (en) * | 2020-07-04 | 2020-10-20 | 孙浩 | Bolt |
-
2017
- 2017-07-27 CN CN201720921769.6U patent/CN206988432U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108506497A (en) * | 2018-07-06 | 2018-09-07 | 中国科学院上海高等研究院 | A kind of plastic seal ring and the shutdown sealing device with plastic seal ring |
| CN108506497B (en) * | 2018-07-06 | 2023-12-22 | 中国科学院上海高等研究院 | Plastic sealing ring and shutdown sealing device with same |
| CN110615296A (en) * | 2019-10-12 | 2019-12-27 | 无锡灵鸽机械科技股份有限公司 | Disc feeding machine and using method thereof |
| CN110925434A (en) * | 2019-11-27 | 2020-03-27 | 西安航天动力研究所 | Ultra-low temperature high-bearing bidirectional sealing device |
| CN111795056A (en) * | 2020-07-04 | 2020-10-20 | 孙浩 | Bolt |
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