CN203867960U - Micro-contact type shaft end sealing device - Google Patents
Micro-contact type shaft end sealing device Download PDFInfo
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- CN203867960U CN203867960U CN201420322255.5U CN201420322255U CN203867960U CN 203867960 U CN203867960 U CN 203867960U CN 201420322255 U CN201420322255 U CN 201420322255U CN 203867960 U CN203867960 U CN 203867960U
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- micro
- shaft end
- lip sheet
- axle sleeve
- hole
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Abstract
The utility model relates to a micro-contact type shaft end sealing device. The micro-contact type shaft end sealing device is arranged in each of shaft holes of different pump sealing cavities with negative pressure or micro positive pressure and low medium viscosity, a plurality of mounting thread holes are formed in the periphery of each pump sealing cavity, and the sealing device is connected with the pump sealing cavity through mounting bolts. The micro-contact type shaft end sealing device comprises a shaft sleeve, a pressure cover, a sealing box, a lip press plate A, a lip press plate B and elastic lips. The micro-contact type shaft end sealing device needs to be filled with lubricating grease regularly so as to prevent sealing damage and failure due to dry friction. The lubricating grease plays a role of lubricating the elastic lip sealing so as to prevent the dry friction damaging the shaft sleeve when a rotating shaft drives the shaft sleeve to rotate. Because the elastic lips are elastic, the elastic lips can seal medium under pressure; the sealing device reliability is increased through arranging a plurality of elastic lips in series. The micro-contact type shaft end sealing device does not need cooling water, is simple in structure and is convenient to maintain.
Description
Technical field
The present invention relates to a kind of micro-contact shaft end seal device.Being mainly used in various pump seal cavitys in the system fields such as oil, chemical industry, pharmacy, rubber, oil refining is negative pressure or micro positive pressure and the not high operating mode of dielectric viscosity, belongs to mechanized equipment manufacturing technology field.
Background technique
Current, packing_seal and mechanical seal are that conveying equipment seal arrangement uses maximum seal types.Although packing_seal is simple in structure, low price, easy to process, mounting or dismounting easily, using scope is wide, its poor sealing performance, leakage rate is large, frictional loss is large, and serious wear to axle axle sleeve.Although mechanical seal sealing is reliable, leakage rate is little, long service life, frictional loss is little, running is stable, applicability is strong, its seal structure complex, process relatively difficultly, and price is high.
As described in " Seal Design handbook " P171, packing seal is for lubrication friction position and take away frictional heat, reduce fret wear, increase the service life, packing seal will allow a certain amount of leakage, therefore, seal request tight, life requirements long occasion high for machine rotational speed, it is unable to do what one wishes that soft packing seal just seems.
As described in " Seal Design handbook " P17 mechanical seal also have complex structure, high to manufacturing requirement, install and shortcomings such as changing trouble, require workman to have certain technical merit, processing is more difficult while there is contingency accident, price is high.
Be negative pressure or micro positive pressure and the not high operating mode of dielectric viscosity for pump seal cavity, design a kind of micro-contact shaft end seal device and can tackle the deficiency of above situation.
Summary of the invention
The object of the present invention is to provide a kind of micro-contact shaft end seal device, this apparatus structure is simple, cost is low, durable in use, and being suitable in pump seal cavity is negative pressure or micro positive pressure and the not high operating mode of dielectric viscosity.
The present invention solves the technological scheme that its technical problem takes: a kind of micro-contact shaft end seal device, be arranged on pressure and be in the axis hole on the various pump seal cavitys that negative pressure or micro positive pressure and dielectric viscosity are not high, pump seal cavity periphery is provided with multiple installation tapped holes, by construction bolt, sealing device is connected with pump seal cavity;
A kind of micro-contact shaft end seal device comprises axle sleeve, gland, sealed case, lip sheet pressing plate A, lip sheet pressing plate B, elastomer lip sheet;
Axle sleeve is arranged on running shaft, is provided with axle sleeve O ring in axle sleeve inner side with running shaft surface of contact;
Between sealed case and pump seal cavity, be provided with sealing O ring, on sealed case, be provided with the multiple installation through holes corresponding with tapped hole is installed, the multiple connecting threads of sealed case arranged outside hole;
Gland is circular, is provided with positioning spiro pit on gland, and collection load is fixed on gland by holding down bolt, and collection load end snaps in the locating slot in axle sleeve outside;
On gland, be provided with the mounting hole corresponding with through hole is installed, construction bolt is successively finally arranged on and installs in tapped hole through mounting hole, installation through hole;
On gland, be provided with the assembling counterbore corresponding with connecting thread hole, assembling bolt is mounted in connecting thread hole by assembling counterbore;
Gland and sealed case contacting side are provided with gland O ring; Sealed case side arranges an interface, inside arranges a guiding gutter, and interface connects guiding gutter, and priming cup is installed in interface outside; Sealed case and shaft room are provided with the black box of lip sheet pressing plate A, elastomer lip sheet and at least two groups from the inside to the outside successively, and black box front end is lip sheet pressing plate B, and rear end is elastomer lip sheet; Lip sheet pressing plate B is upper along the multiple oil-through holes of circumference, and oil-through hole connects by guiding gutter and interface, on lip sheet pressing plate B, is provided with circular groove.
The invention has the beneficial effects as follows: compared with prior art, a kind of micro-contact shaft end seal device of the present invention does not need cooling water compared with packing_seal, and without leakage, maintenance maintenance expense is low.Compared with mechanical seal, it is simple in structure, and cost is low, is convenient to maintenance.
Brief description of the drawings
Fig. 1 is structure sectional view of the invention process.
Wherein: 1. axle sleeve O ring, 2. lip sheet pressing plate A, 3. lip sheet pressing plate B, 4. sealing O ring, 5. elastomer lip sheet, 6. sealed case, 7. priming cup, 8. gland, 9. gland O ring, 10. holding down bolt, 11. collection loads, 12. construction bolts, 13. mounting holes, 14. install through hole, 15. axle sleeves, 16. running shafts, 17. guiding gutters, 18. circular grooves, 19. pump seal cavitys, 20. connecting thread holes, 21. positioning spiro pits, 22. locating slots, 23. axis holes, 24. install tapped hole, 25. assembling counterbores, 26. assembling bolts, 27. interfaces, 28. oil-through holes.
Embodiment
As shown in Figure 1, a kind of micro-contact shaft end seal device, be arranged on pressure and be in the axis hole 23 on the various pump seal cavitys 19 that negative pressure or micro positive pressure and dielectric viscosity are not high, pump seal cavity 19 peripheries are provided with multiple installation tapped holes 24, by construction bolt 12, sealing device are connected with pump seal cavity 19;
A kind of micro-contact shaft end seal device comprises axle sleeve 15, gland 8, sealed case 6, lip sheet pressing plate A2, lip sheet pressing plate B3, elastomer lip sheet 5;
Axle sleeve 15 is enclosed within on running shaft 16, is provided with axle sleeve O ring 1 in axle sleeve 15 inner sides and running shaft 16 surface of contact;
Between sealed case 6 and pump seal cavity 19, be provided with sealing O ring 4, on sealed case 6, be provided with the multiple installation through holes 14 corresponding with tapped hole 24 is installed, the sealed case multiple connecting threads of 6 arranged outside hole 20;
Gland 8 is circular, is provided with positioning spiro pit 21 on gland 8, and collection load 11 is fixed on gland 8 by holding down bolt 10, and collection load 11 ends snap in the locating slot 22 in axle sleeve 15 outsides;
On gland 8, be provided with the mounting hole corresponding with through hole 14 is installed 13, construction bolt 12 is successively finally arranged on and installs in tapped hole 24 through mounting hole 13, installation through hole 14;
On gland 8, be provided with the assembling counterbore 25 corresponding with connecting thread hole 20, assembling bolt 26 is mounted in connecting thread hole 20 by assembling counterbore 25;
Gland 8 is provided with gland O ring 9 with sealed case 6 contacting sides; Sealed case 6 sides arrange an interface 27, inside arranges a guiding gutter 17, and interface 27 connects guiding gutter 17, and priming cup 7 is installed in interface 27 outsides; The black box that lip sheet pressing plate A2, elastomer lip sheet 5 and at least two groups are installed between sealed case 6 and axle sleeve 15 from the inside to the outside successively, black box front end is lip sheet pressing plate B3, rear end is elastomer lip sheet 5; Lip sheet pressing plate B3 is upper along the multiple oil-through holes 28 of circumference, and oil-through hole 28 connects by guiding gutter 17 and interface 27, on lip sheet pressing plate B3, is provided with circular groove 18.
In described elastomer lip sheet 5 lip chambeies, be full of lubricating grease.
Described elastomer lip sheet 5 is rubber material.
Described elastomer lip sheet 5 is cylndrical surface or sphere with the micro-contact segment of axle sleeve 15.
Described elastomer lip sheet 5 is 1/60～1/40 with the ratio of the micro-contact width of axle sleeve 15 and contacting point axle sleeve 15 external diameters.
Described elastomer lip sheet 5 is at least one surface of contact with the micro-contact segment of axle sleeve 15.
Described elastomer lip sheet 5 internal diameters and the dimension difference of axle sleeve 15 external diameters and axle sleeve 15 outside dimension ratios are 1/50～1/20.
Described sealed case 6 can be overall structure, can be also that multiple parts are formed by connecting, and O ring or pad are set between part.
Described oil-through hole 28 is distributed on the circumferential surface of lip sheet pressing plate B3.
The installation step of micro-contact shaft end seal device:
1), to packing successively lip sheet pressing plate A2, elastomer lip sheet 5 and at least two group black boies in sealed case 6 into, black box front end is lip sheet pressing plate B3, rear end is elastomer lip sheet 5;
2), axle sleeve 15 is pressed to Fig. 1 direction and inserted sealed case 6;
3), installation gland O encircles 9, and gland 8 is arranged in the mounting disc 18 of sealed case 6 by assembling bolt 26, assembling counterbore 25, assembling tapped hole 20;
4), collection load 11 is snapped in to locating slot 22, and use holding down bolt 10 to fix by installation screw B21;
5), will in opening 27, fill lubricating grease, installation priming cup 7;
6) by priming cup 7 to supplemental lubrication fat in opening 27, ensure to be full of;
7) axle sleeve O ring 1 is installed, sealing O ring 4.
The installation steps of micro-contact shaft end seal device:
1), pack this shaft end seal device into pump seal cavity 19, use construction bolt 12 successively through mounting hole 13, through hole 14 is installed and is finally arranged on and install in tapped hole 24, micro-contact shaft end seal device is fixed on above pump seal cavity 19;
2), running shaft 16 is penetrated to axle sleeve 15, be compacted to mounting point by pump impeller positioning ring;
3), remove collection load 11 and holding down bolt 10, and keep properly, to use when dismounting.
Owing to being provided with oil-through hole 28 on lip sheet pressing plate B3, oil-through hole 28 connects with opening 27, and oil-through hole 28 upper ends are circular groove.In the time injecting lubricating grease by opening 27, lubricating grease can be filled to per pass elastomer lip sheet 5 smoothly uniformly.Elastomer lip sheet 5 can equally be held axle sleeve 15 tightly by similar oil sealing, and resists certain pressure.Axle sleeve 15 adopts special processing process, and surface finishment is high, and wear resistance is good.Elastomer lip sheet 5 adopts rubber material, and wear resistance, resistance to medium are good.
A kind of micro-contact shaft end seal device of the present invention needs regularly to inject lubricating grease, prevents that dry friction from causing bad seals to lose efficacy.Lubricating grease seals lubricate to elastomer lip sheet 5, in the time that running shaft 16 drives axle sleeve 15 to rotate, avoids dry friction to damage axle sleeve 15.Because elastomer lip sheet 5 has certain elasticity, in the time bearing pressure, just can realize the sealing of axle sleeve 15, multiple tracks elastomer lip sheet 5 tandem arrangement, have increased the reliability of seal arrangement.This device does not need cooling water, simple in structure, is convenient to maintenance.
Claims (9)
1. a micro-contact shaft end seal device, be arranged on pressure and be in the axis hole (23) on the various pump seal cavitys (19) that negative pressure or micro positive pressure and dielectric viscosity are not high, pump seal cavity (19) periphery is provided with multiple installation tapped holes (24), by construction bolt (12), sealing device is connected with pump seal cavity (19);
A kind of micro-contact shaft end seal device comprises axle sleeve (15), gland (8), sealed case (6), lip sheet pressing plate A(2), lip sheet pressing plate B(3), elastomer lip sheet (5);
It is upper that axle sleeve (15) is enclosed within running shaft (16), is provided with axle sleeve O ring (1) in axle sleeve (15) inner side with running shaft (16) surface of contact;
Between sealed case (6) and pump seal cavity (19), be provided with sealing O ring (4), on sealed case (6), be provided with the multiple installation through holes (14) corresponding with tapped hole (24) is installed, the multiple connecting threads of sealed case (6) arranged outside holes (20);
Gland (8) is circular, is provided with positioning spiro pit (21) on gland (8), and it is upper that collection load (11) is fixed on gland (8) by holding down bolt (10), and collection load (11) end snaps in the locating slot (22) in axle sleeve (15) outside;
On gland (8), be provided with the mounting hole (13) corresponding with through hole (14) is installed, construction bolt (12) is successively finally arranged on and installs in tapped hole (24) through mounting hole (13), installation through hole (14);
On gland (8), be provided with the assembling counterbore (25) corresponding with connecting thread hole (20), assembling bolt (26) is mounted in connecting thread hole (20) by assembling counterbore (25);
Gland (8) is provided with gland O ring (9) with sealed case (6) contacting side;
It is characterized in that: sealed case (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; Lip sheet pressing plate A(2 is installed between sealed case (6) and axle sleeve (15) from the inside to the outside successively), the black box of elastomer lip sheet (5) and at least two groups, black box front end is lip sheet pressing plate B(3), rear end is elastomer lip sheet (5); Lip sheet pressing plate B(3) upper along the multiple oil-through holes of circumference (28), oil-through hole (28) connects by guiding gutter (17) and interface (27), lip sheet pressing plate B(3) on be provided with circular groove (18).
2. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: in described elastomer lip sheet (5) lip chamber, be full of lubricating grease.
3. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: described elastomer lip sheet (5) is rubber material.
4. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: described elastomer lip sheet (5) is cylndrical surface or sphere with the micro-contact segment of axle sleeve (15).
5. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: described elastomer lip sheet (5) is 1/60～1/40 with the ratio of the micro-contact width of axle sleeve (15) and contacting point axle sleeve (15) external diameter.
6. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: described elastomer lip sheet (5) is at least one surface of contact with the micro-contact segment of axle sleeve (15).
7. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: dimension difference and axle sleeve (15) the outside dimension ratio of described elastomer lip sheet (5) internal diameter and axle sleeve (15) external diameter are 1/50～1/20.
8. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: described sealed case (6) can be overall structure, can be also that multiple parts are formed by connecting, and O ring or pad are set between part.
9. a kind of micro-contact shaft end seal device according to claim 1, is characterized in that: described oil-through hole (28) is distributed on lip sheet pressing plate B(3) circumferential surface on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322255.5U CN203867960U (en) | 2014-06-17 | 2014-06-17 | Micro-contact type shaft end sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420322255.5U CN203867960U (en) | 2014-06-17 | 2014-06-17 | Micro-contact type shaft end sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203867960U true CN203867960U (en) | 2014-10-08 |
Family
ID=51648920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420322255.5U Withdrawn - After Issue CN203867960U (en) | 2014-06-17 | 2014-06-17 | Micro-contact type shaft end sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203867960U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994094A (en) * | 2014-06-17 | 2014-08-20 | 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 CN201420322255.5U patent/CN203867960U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103994094A (en) * | 2014-06-17 | 2014-08-20 | 东营海森密封技术有限责任公司 | Micro contact type shaft end sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141008 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |