CN103994094B - A kind of micro-contact axle end sealing device - Google Patents
A kind of micro-contact axle end sealing device Download PDFInfo
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- CN103994094B CN103994094B CN201410269151.7A CN201410269151A CN103994094B CN 103994094 B CN103994094 B CN 103994094B CN 201410269151 A CN201410269151 A CN 201410269151A CN 103994094 B CN103994094 B CN 103994094B
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Abstract
The present invention relates to a kind of micro-contact axle end sealing device, being arranged on pressure is in the axis hole on negative pressure or pressure-fired and the highest various pump seal cavitys of dielectric viscosity, pump seal cavity periphery is provided with multiple installation screwed hole, is connected with pump seal cavity by this sealing device by installing bolt.Micro-contact axle end sealing device includes axle sleeve, gland, seal box, lips pressing plate A, lips pressing plate B, elastomer lips.A kind of micro-contact axle end sealing device of the present invention needs periodically to inject grease, prevents dry friction from causing bad seals to lose efficacy.Grease has sealed lubrication to elastomer lips, when rotary shaft drives axle sleeve to rotate, it is to avoid dry friction damages axle sleeve.Owing to elastomer lips has certain elasticity, just can realize the sealing to medium, multiple tracks elastomer lips arranged in series when bearing pressure, add the reliability of sealing device.This device need not cool down water, simple in construction, it is simple to maintenance.
Description
Technical field
The present invention relates to a kind of micro-contact axle end sealing device.Being mainly used in various pump seal cavitys in the system regions such as oil, chemical industry, pharmacy, rubber, oil refining is negative pressure or pressure-fired and the highest operating mode of dielectric viscosity, belongs to mechanized equipment manufacturing technology field.
Background technology
Currently, packing_seal and mechanical seal are that conveying equipment sealing device uses most seal types.Although packing_seal simple in construction, low price, easy to process, mounting or dismounting are easy, range is wide, but its poor sealing performance, leakage rate are big, frictional dissipation is big, and the serious wear of countershaft axle sleeve.Although mechanical seal seal reliable, leakage rate is little, length in service life, frictional dissipation is little, operating is stable, the suitability is strong, but its seal structure complex, process relative difficulty, and price height.
Packing seal as described in " Seal Design handbook " P171 for lubrication friction position and takes away frictional heat, reduce material abrasion, increase the service life, packing seal to have allowed a certain amount of leakage, therefore high for machine rotational speed, seal request tight, the occasion of life requirements length, soft packing seal just seems unable to do what one wishes.
Mechanical seal as described in " Seal Design handbook " P17 also has that structure is complicated, high to processing and manufacturing requirement, install and change trouble, require that workman has certain technical merit, occurs to process the shortcomings such as more difficult, price is high during occasionality accident.
It is negative pressure or pressure-fired and the highest operating mode of dielectric viscosity for pump seal cavity, designs a kind of micro-contact axle end sealing device and can tackle the deficiency of case above.
Summary of the invention
It is an object of the invention to provide a kind of micro-contact axle end sealing device, this apparatus structure is simple, cost is low, durable in use, be suitable in pump seal cavity be negative pressure or pressure-fired and the highest operating mode of dielectric viscosity.
The present invention solves its technical problem and is adopted the technical scheme that: a kind of micro-contact axle end sealing device, being arranged on pressure is in the axis hole on negative pressure or pressure-fired and the highest various pump seal cavitys of dielectric viscosity, pump seal cavity periphery is provided with multiple installation screwed hole, is connected with pump seal cavity by this sealing device by installing bolt；
A kind of micro-contact axle end sealing device includes axle sleeve, gland, seal box, lips pressing plate A, lips pressing plate B, elastomer lips；
Axle sleeve is installed on the rotary shaft, is provided with axle sleeve O ring inside axle sleeve with rotary shaft contact surface；
It is provided with sealing O ring between seal box and pump seal cavity, seal box is provided with the multiple installation through holes corresponding with installing screwed hole, multiple connection screwed hole is set outside seal box；
Gland is circular, and gland is provided with positioning spiro pit, and collection load is fixed on gland by bolt, and collection load end snaps in the locating slot outside axle sleeve；
It is provided with the installing hole corresponding with installing through hole on gland, bolt is installed and is successively finally arranged in installation screwed hole through installing hole, installation through hole；
Being provided with the assembling counterbore corresponding with connecting screwed hole on gland, assembling bolt is installed to connecting in screwed hole by assembling counterbore；
Gland and seal box contact side are provided with gland O ring；Seal box side arranges an interface, inside arranges a guiding gutter, and interface connects guiding gutter, installs priming cup outside interface；Seal box and shaft room are sequentially installed with the black box of lips pressing plate A, elastomer lips and at least two groups from the inside to the outside, and black box front end is lips pressing plate B, and rear end is elastomer lips；Circumferentially arranging multiple oil-through hole on lips pressing plate B, oil-through hole is through with interface by guiding gutter, and lips pressing plate B is provided with cannelure.
The invention has the beneficial effects as follows: compared with prior art, a kind of micro-contact axle end sealing device of the present invention need not cool down water, and No leakage compared with packing_seal, and maintenance maintenance expense is low.Compared with mechanical seal, its simple in construction, low cost, it is simple to maintenance.
Accompanying drawing explanation
Fig. 1 is the structure sectional view that the present invention implements.
Wherein: 1. axle sleeve O ring, 2. lips pressing plate A, 3. lips pressing plate B, 4. seal O ring, 5. elastomer lips, 6. seal box, 7. priming cup, 8. gland, 9. gland O ring, 10. bolt, 11. collection loads, 12. install bolt, 13. installing holes, 14. install through hole, 15. axle sleeves, 16. rotary shafts, 17. guiding gutters, 18. cannelures, 19. pump seal cavitys, 20. connect screwed hole, 21. positioning spiro pits, 22. locating slots, 23. axis holes, 24. install screwed hole, 25. assembling counterbores, 26. assembling bolts, 27. interfaces, 28. oil-through holes.
Detailed description of the invention
As shown in Figure 1, a kind of micro-contact axle end sealing device, being arranged on pressure is in the axis hole 23 on negative pressure or pressure-fired and the highest various pump seal cavitys 19 of dielectric viscosity, pump seal cavity 19 periphery is provided with multiple installation screwed hole 24, is connected with pump seal cavity 19 by this sealing device by installing bolt 12；
A kind of micro-contact axle end sealing device includes axle sleeve 15, gland 8, seal box 6, lips pressing plate A2, lips pressing plate B3, elastomer lips 5；
Axle sleeve 15 is enclosed within rotary shaft 16, inside axle sleeve 15, rotary shaft 16 contact surface is provided with axle sleeve O ring 1；
It is provided with sealing O ring 4 between seal box 6 and pump seal cavity 19, seal box 6 is provided with the multiple installation through holes 14 corresponding with installing screwed hole 24, multiple connection screwed hole 20 is set outside seal box 6；
Gland 8 is circular, and gland 8 is provided with positioning spiro pit 21, and collection load 11 is fixed on gland 8 by bolt 10, and collection load 11 end snaps in the locating slot 22 outside axle sleeve 15；
It is provided with the installing hole 13 corresponding with installing through hole 14 on gland 8, bolt 12 is installed and is successively finally arranged in installation screwed hole 24 through installing hole 13, installation through hole 14；
Being provided with the assembling counterbore 25 corresponding with connecting screwed hole 20 on gland 8, assembling bolt 26 is installed to connecting in screwed hole 20 by assembling counterbore 25；
Gland 8 and seal box 6 contact side are provided with gland O ring 9；Seal box 6 side arranges an interface 27, inside arranges a guiding gutter 17, and interface 27 connects guiding gutter 17, installs priming cup 7 outside interface 27；Being sequentially installed with lips pressing plate A2, elastomer lips 5 and the black box of at least two groups between seal box 6 and axle sleeve 15 from the inside to the outside, black box front end is lips pressing plate B3, and rear end is elastomer lips 5；Circumferentially arranging multiple oil-through hole 28 on lips pressing plate B3, oil-through hole 28 is through with interface 27 by guiding gutter 17, and lips pressing plate B3 is provided with cannelure 18.
Described elastomer lips 5 lip intracavity is full of grease.
Described elastomer lips 5 is elastomeric material.
Described elastomer lips 5 is the face of cylinder or sphere with the micro-contact portion of axle sleeve 15.
Described elastomer lips 5 is 1/60～1/40 with the ratio of the micro-contact width of axle sleeve 15 with contact position axle sleeve 15 external diameter.
Described elastomer lips 5 is at least one contact surface with the micro-contact portion of axle sleeve 15.
Described elastomer lips 5 internal diameter is 1/50～1/20 with dimension difference and the axle sleeve 15 outside dimension ratio of axle sleeve 15 external diameter.
Described seal box 6 can be overall structure, it is also possible to is that multiple part is formed by connecting, arranges O ring or pad between part.
Described oil-through hole 28 is distributed on the periphery of lips pressing plate B3.
The installation step of micro-contact axle end sealing device:
1), being sequentially loaded into lips pressing plate A2, elastomer lips 5 and at least two group black boies in seal box 6, black box front end is lips pressing plate B3, and rear end is elastomer lips 5；
2), axle sleeve 15 is pressed Fig. 1 direction and inserts seal box 6；
3), gland O ring 9 is installed, and by assembling bolt 26, assembling counterbore 25, assembling screwed hole 20, gland 8 is arranged in the mounting disc 18 of seal box 6；
4), by collection load 11 snap in locating slot 22, and use bolt 10 to be fixed by installation screw B21；
5), opening 27 will fill grease, priming cup 7 is installed；
6) by priming cup 7 supplemental lubrication fat in opening 27, it is ensured that be full of；
7) mounting sleeve O ring 1, seals O ring 4.
The installation steps of micro-contact axle end sealing device:
1), this axle end sealing device is loaded pump seal cavity 19, use installation bolt 12 successively to pass installing hole 13, through hole 14 is installed and is finally arranged in installation screwed hole 24, micro-contact axle end sealing device is fixed on above pump seal cavity 19；
2), rotary shaft 16 is penetrated axle sleeve 15, be compacted to installation site by impeller of pump locating ring；
3), remove collection load 11 and bolt 10, and keep properly, in order to use during dismounting.
Owing to being provided with oil-through hole 28 on lips pressing plate B3, oil-through hole 28 is through with opening 27, and oil-through hole 28 upper end is cannelure.When injecting grease by opening 27, grease can be filled the most uniformly to per pass elastomer lips 5.Elastomer lips 5 can be similar to oil sealing and equally hold axle sleeve 15 tightly, and resists certain pressure.Axle sleeve 15 uses special processing process, and surface smoothness is high, and wearability is good.Elastomer lips 5 uses elastomeric material, and wearability, resistance to medium are good.
A kind of micro-contact axle end sealing device of the present invention needs periodically to inject grease, prevents dry friction from causing bad seals to lose efficacy.Grease has sealed lubrication to elastomer lips 5, when rotary shaft 16 drives axle sleeve 15 to rotate, it is to avoid dry friction damages axle sleeve 15.Owing to elastomer lips 5 has certain elasticity, just can realize the sealing of axle sleeve 15, multiple tracks elastomer lips 5 arranged in series when bearing pressure, add the reliability of sealing device.This device need not cool down water, simple in construction, it is simple to maintenance.
Claims (9)
1. a micro-contact axle end sealing device, being arranged on pressure is in the axis hole (23) on negative pressure or pressure-fired and the highest various pump seal cavitys (19) of dielectric viscosity, pump seal cavity (19) periphery is provided with multiple installation screwed hole (24), is connected with pump seal cavity (19) by this sealing device by installing bolt (12)；
A kind of micro-contact axle end sealing device includes axle sleeve (15), gland (8), seal box (6), lips pressing plate A(2), lips pressing plate B(3), elastomer lips (5)；
Axle sleeve (15) is enclosed within rotary shaft (16), in axle sleeve (15) inner side, rotary shaft (16) contact surface is provided with axle sleeve O ring (1)；
Being provided with sealing O ring (4) between seal box (6) and pump seal cavity (19), seal box (6) is provided with the multiple installation through holes (14) corresponding with installing screwed hole (24), seal box (6) outside arranges multiple connection screwed hole (20)；
Gland (8) is circular, and gland (8) is provided with positioning spiro pit (21), and collection load (11) is fixed on gland (8) by bolt (10), and collection load (11) end snaps in the locating slot (22) in axle sleeve (15) outside；
It is provided with the installing hole (13) corresponding with installing through hole (14) on gland (8), bolt (12) is installed and is successively finally arranged in installation screwed hole (24) through installing hole (13), installation through hole (14)；
Being provided with the assembling counterbore (25) corresponding with connecting screwed hole (20) on gland (8), assembling bolt (26) is installed to connecting in screwed hole (20) by assembling counterbore (25)；
Gland (8) and seal box (6) contact side are provided with gland O ring (9)；
It is characterized in that: seal box (6) side arranges an interface (27), inside arranges a guiding gutter (17), interface (27) connects guiding gutter (17), and priming cup (7) is installed in interface (27) outside；Be sequentially installed with lips pressing plate A(2 between seal box (6) and axle sleeve (15) from the inside to the outside), the black box of elastomer lips (5) and at least two groups, black box front end is lips pressing plate B(3), rear end is elastomer lips (5)；Lips pressing plate B(3) on circumferentially arrange multiple oil-through hole (28), oil-through hole (28) by guiding gutter (17) through with interface (27), lips pressing plate B(3) on be provided with cannelure (18).
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described elastomer lips (5) lip intracavity is full of grease.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described elastomer lips (5) is elastomeric material.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described elastomer lips (5) and axle sleeve (15) micro-contact portion are the face of cylinder or sphere.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described elastomer lips (5) is 1/60～1/40 with the ratio of axle sleeve (15) micro-contact width with contact position axle sleeve (15) external diameter.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described elastomer lips (5) and axle sleeve (15) micro-contact portion are at least one contact surface.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described elastomer lips (5) internal diameter is 1/50～1/20 with dimension difference and axle sleeve (15) the outside dimension ratio of axle sleeve (15) external diameter.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described seal box (6) can be overall structure, it is also possible to is that multiple part is formed by connecting, arranges O ring or pad between part.
A kind of micro-contact axle end sealing device the most according to claim 1, it is characterised in that: described oil-through hole (28) is distributed on lips pressing plate B(3) periphery on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269151.7A CN103994094B (en) | 2014-06-17 | 2014-06-17 | A kind of micro-contact axle end sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410269151.7A CN103994094B (en) | 2014-06-17 | 2014-06-17 | A kind of micro-contact axle end sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103994094A CN103994094A (en) | 2014-08-20 |
| CN103994094B true CN103994094B (en) | 2016-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410269151.7A Active CN103994094B (en) | 2014-06-17 | 2014-06-17 | A kind of micro-contact axle end sealing device |
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| CN (1) | CN103994094B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3815655C2 (en) * | 1988-05-07 | 1994-04-14 | Blohm Voss Ag | Sealing for rotating shafts, especially stern tube sealing |
| JP4047024B2 (en) * | 2002-01-31 | 2008-02-13 | 古河機械金属株式会社 | Pump shaft seal device |
| CN201057270Y (en) * | 2007-04-19 | 2008-05-07 | 成都西南泵阀有限责任公司 | Packless seal device |
| CN202597212U (en) * | 2012-05-15 | 2012-12-12 | 攀钢集团攀枝花钢钒有限公司 | Water pump shaft seal structure |
| CN203867960U (en) * | 2014-06-17 | 2014-10-08 | 东营海森密封技术有限责任公司 | Micro-contact type shaft end sealing device |
-
2014
- 2014-06-17 CN CN201410269151.7A patent/CN103994094B/en active Active
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| Publication number | Publication date |
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| CN103994094A (en) | 2014-08-20 |
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