CN203230851U - Shaft end sealing device - Google Patents
Shaft end sealing device Download PDFInfo
- Publication number
- CN203230851U CN203230851U CN 201320256399 CN201320256399U CN203230851U CN 203230851 U CN203230851 U CN 203230851U CN 201320256399 CN201320256399 CN 201320256399 CN 201320256399 U CN201320256399 U CN 201320256399U CN 203230851 U CN203230851 U CN 203230851U
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- ring
- annular
- rubber
- annular groove
- rubber sleeve
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a shaft end sealing device which comprises a static ring arranged on a transparent cover and a rubber sleeve arranged on a shaft neck. The shaft end sealing device is characterized in that an annular groove is formed in the static ring; a permanent magnet is embedded in the annular groove; at least one annular groove is formed in the rubber sleeve; an annular iron ring is arranged in the annular groove; a copper ring is arranged between the rubber sleeve and the static ring; the rear end of the copper ring is embedded in an end part groove opening of the rubber sleeve; iron screws are uniformly distributed on the rubber sleeve; the iron screws penetrate through the rubber ring and the annular iron ring and are screwed in the rear end of the copper ring of the rubber sleeve; and the end face of the front part of the copper ring is tightly supported against the static ring to form a movable leakage surface.
Description
Technical field
The utility model relates to a kind of shaft end seal, especially a kind of shaft end seal based on magnetic force.
Background technique
Industrial gear-box, blower fan, steam turbine, motor, pump, etc. in the equipment, oil leak not only influences the proper functioning of these equipment, reduce their working life, and caused the serious environmental pollution, the more important thing is in some occasion, in chemical industry, the leakage of lubricant oil can cause serious security incident, for many years, in these equipment, the general rubber oil seas that adopt of axle head in case leak-stopping oil more.Require higher equipment to use the dual-oil seal structure, be generally an outside framework oil seal and add an exoskeletal oil sealing, perhaps use two outside framework oil seals.This outside framework oil seal has simple in structure, and compactness is cheap, characteristics easy for installation.But because the direct contact friction of outside framework oil seal and axle journal place, outside framework oil seal requires than higher the surface accuracy at axle journal place.When surface accuracy does not reach requirement, will cause wearing and tearing to oil sealing, cause outside framework oil seal to lose the function of oil sealing, in addition, outside framework oil seal also can cause certain wearing and tearing to axle journal simultaneously.For these reasons, outside framework oil seal generally only is applicable to rotational speed≤20 m/s, uses under the working environment of pressure≤0.05 MPa.
Along with the progress and development of science and technology, feasible requirement to mechanical shaft end seal is also progressively improving, and this traditional rubber and plastic oil sealing is difficult in and continues to satisfy harsh day by day working environment and the specific (special) requirements in market in the future.In some important occasion, in chemical industry, the leakage of lubricant oil can cause serious security incident.If but use traditional mechanical oil sealing, though can solve problems such as leakage of oil and life-span, the expensive maintenance of its complex structure is loaded down with trivial details, and the manufacturing of machinery and maintenance cost are risen.
As everybody knows, magnetic sealing device is to develop from mechanical seal device, and its key is the face pressure of motive sealing face, the face pressure selection whether rationally directly have influence on sealing effect.Different Environmental Conditions is also different to the requirement of face pressure, as: different rotational speeies, to the degree that requires of leakage rate, the pressure of sealed medium, external environment condition pressure etc.At this moment the adjustability of magnetic force, it is very important that convenience just becomes.
External some seal arrangements based on magnetic force that emerged.But, involve great expense, mainly adopt the O type circle on the rotating ring to move the mode that compensates at axle journal by magnetic force.This is high to the axle journal requirement on machining accuracy, causes O type circle and the leakage of oil of axle journal cooperation place if axle journal is crossed the young pathbreaker, and axle journal is crossed senior general and caused O type circle not move, thereby can not compensate, moving leakage face seal failure.Aspect installation, there is not the positioning table terrace on the axle journal yet.At present, this seal form and may not be certain has and uses advantage reliable and easy for installation.
Summary of the invention
The purpose of this utility model is: the surface accuracy at the rubber oil sea axle journal place that exists in the machinery requires only to be applicable to lower rotational speed than lacking in higher, working life; Machinery oil seal structure complexity, expensive, safeguard loaded down with trivial details; External involves great expense based on magnetic sealing device, adopt O type circle to compensate the axle journal requirement on machining accuracy high, operating condition for machinery requires also to compare a series of problems such as harshness, and a kind of brand-new magnetic adjustable shaft end seal with double seal effect is provided.
The purpose of this utility model is achieved in that a kind of shaft end seal device, comprises the rubber sleeve of installing on the stationary ring that covers installation and the axle journal, and it is characterized in that: be provided with annular groove in the stationary ring one, permanent magnet is flush-mounted in the annular groove; At least be provided with one annular groove in the rubber ring, insert annular iron ring in the annular groove; Be provided with copper ring between rubber sleeve and the stationary ring, the copper ring rear end embeds the end notch of rubber sleeve, be evenly distributed with the irony screw on the rubber sleeve, the irony screw passes rubber ring and annular iron ring is screwed into the copper ring rear end that embeds rubber sleeve, and the copper ring front end face is tight against stationary ring and forms moving leakage face.
In the present embodiment: described rubber ring is concentric with axle journal, and described axle journal is provided with the location shoulder block, and the rear portion of rubber ring is closely against the location shoulder block; Twice convex annular weir before and after the inner ring of rubber ring is provided with, the convex annular weir closely contacts with axle journal and forms quiet leakage face, is the buffering compensating basin between the twice convex annular weir.
In the present embodiment: be provided with 2-4 road annular groove in the described rubber ring, all insert annular iron ring in the per pass annular groove; Described permanent magnet is provided with the dismounting screw; Described stationary ring is provided with sealing gasket with the junction plane of saturating lid, and stationary ring and axle journal connecting part are provided with labyrinth-type excluder.
In the present embodiment: the closed annular iron ring that described annular iron ring is combined to form by 2-4 sheet open annular ironware; Described rubber ring adopts whippy oil-resistant rubber material to make.
Advantage in the utility model is: owing to be provided with relative static rubber sleeve with axle journal, and the twice convex annular weir, front and back by rubber sleeve closely contacts with axle journal and forms quiet leakage face, simultaneously, between rubber sleeve and stationary ring, be provided with copper ring, by forming moving leakage face between copper ring and the stationary ring, junction plane at stationary ring and axle journal is provided with labyrinth-type excluder, and these measures can stop lubricant oil to be revealed from axle journal; Owing to be provided with annular groove one in stationary ring, permanent magnet is flush-mounted in the annular groove, is provided with one annular groove at least simultaneously in rubber ring, inserts annular iron ring in the annular groove, under the effect of magnet, makes copper ring be close to stationary ring, improves the sealing effect of moving leakage face; Because what form between the twice convex annular weir is the buffering compensating basin, can reduces or offsets in the journal motion because shaking the adverse effect to quiet leakage face sealing effect by the buffering compensating basin; Because permanent magnet is to be provided with the dismounting screw, can by the dismounting screw permanent magnet be taken out from annular groove easily.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation.
Fig. 2 is the local enlarged diagram of I among Fig. 1.
Fig. 3 is a kind of axial cross-sectional configuration schematic representation of rubber sleeve.
Among the figure: 1, rubber sleeve, 2, the irony screw, 3, axle journal, 4, annular iron ring, 5, copper ring, 6, saturating lid, 7, sealing gasket, 8, the location shoulder block, 9, stationary ring, 10, permanent magnet, 11, labyrinth-type excluder, 12, annular groove, 13, convex annular weir, 14, the buffering compensating basin, 15, notch, 16, adjust ring, 17, bearing.
Embodiment
The nonrestrictive concrete structure that discloses the utility model embodiment of accompanying drawing is done to describe further to the utility model below in conjunction with accompanying drawing.
By Fig. 1 and Fig. 2 as seen, the utility model comprises and covers on 6 the rubber sleeve of installing on the stationary ring 9 installed and the axle journal 31, rubber ring 1 is concentric with axle journal 3, twice convex annular weir before and after the inner ring of rubber ring 1 is provided with, the convex annular weir closely contacts with axle journal 3 and forms quiet leakage face B and C, is the buffering compensating basin between the twice convex annular weir.Be provided with one annular groove in the stationary ring 9, permanent magnet 10 is flush-mounted in the annular groove; At least be provided with one annular groove in the rubber ring 9, insert annular iron ring 4 in the annular groove; Be provided with copper ring 5 between rubber sleeve 1 and the stationary ring 9, copper ring 5 rear ends embed rubber sleeve 1 end notch, be evenly distributed with irony screw 2 on the rubber sleeve 1, irony screw 2 passes rubber ring 1 and annular iron ring 4 is screwed into copper ring 5 rear ends that embed rubber sleeve 1, and copper ring 5 front end face are tight against stationary ring 9 and form moving leakage face A.Stationary ring 5 is provided with sealing gasket 7 with the junction plane of saturating lid 6, and stationary ring 9 is provided with labyrinth-type excluder 11 with axle journal 3 connecting parts.
In the present embodiment, axle journal 3 is provided with location shoulder block 8, and the rear portion of rubber ring 1 is closely against location shoulder block 8.Also be provided with between saturating lid and the bearing 17 and adjust ring 16.
During concrete enforcement, described rubber ring 1 can adopt whippy oil-resistant rubber material to make, 2-4 road annular groove can be set in the rubber ring 1, all insert annular iron 4 in the per pass annular groove, the closed annular iron ring that described annular iron ring 4 can be combined to form by 2-4 sheet open annular ironware.Described permanent magnet 10 is provided with the dismounting screw.
As seen from Figure 3, in rubber ring 1 rubber ring 1 twice annular groove 12 is set, twice convex annular weir 13 before and after the inner ring of rubber ring 1 is provided with, be buffering compensating basin 14 between the twice convex annular weir 13, described copper ring 5 is embedded by the notch of end, during assembling, irony screw 2 passes rubber ring 1 and annular iron ring 4 is screwed into copper ring 5 rear ends that embed rubber sleeve 1.
Claims (4)
1. shaft end seal device comprises the rubber sleeve of installing on the stationary ring that covers installation and the axle journal, and it is characterized in that: be provided with annular groove in the stationary ring one, permanent magnet is flush-mounted in the annular groove; At least be provided with one annular groove in the rubber ring, insert annular iron ring in the annular groove; Be provided with copper ring between rubber sleeve and the stationary ring, the copper ring rear end embeds the end notch of rubber sleeve, be evenly distributed with the irony screw on the rubber sleeve, the irony screw passes rubber ring and annular iron ring is screwed into the copper ring rear end that embeds rubber sleeve, and the copper ring front end face is tight against stationary ring and forms moving leakage face.
2. shaft end seal device according to claim 1, it is characterized in that: described rubber ring is concentric with axle journal, and described axle journal is provided with the location shoulder block, and the rear portion of rubber ring is closely against the location shoulder block; Twice convex annular weir before and after the inner ring of rubber ring is provided with, the convex annular weir closely contacts with axle journal and forms quiet leakage face, is the buffering compensating basin between the twice convex annular weir.
3. shaft end seal device according to claim 1 and 2 is characterized in that: be provided with 2-4 road annular groove in the described rubber ring, all insert annular iron ring in the per pass annular groove; Described permanent magnet is provided with the dismounting screw; Described stationary ring is provided with sealing gasket with the junction plane of saturating lid, and stationary ring and axle journal connecting part are provided with labyrinth-type excluder.
4. shaft end seal device according to claim 3 is characterized in that: the closed annular iron ring that described annular iron ring is combined to form by 2-4 sheet open annular ironware; Described rubber ring adopts whippy oil-resistant rubber material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320256399 CN203230851U (en) | 2013-05-13 | 2013-05-13 | Shaft end sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320256399 CN203230851U (en) | 2013-05-13 | 2013-05-13 | Shaft end sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230851U true CN203230851U (en) | 2013-10-09 |
Family
ID=49286978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320256399 Expired - Lifetime CN203230851U (en) | 2013-05-13 | 2013-05-13 | Shaft end sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230851U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715799A (en) * | 2016-03-23 | 2016-06-29 | 南京高精齿轮集团有限公司 | Adjustable graphite sealing device |
-
2013
- 2013-05-13 CN CN 201320256399 patent/CN203230851U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105715799A (en) * | 2016-03-23 | 2016-06-29 | 南京高精齿轮集团有限公司 | Adjustable graphite sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191014 Address after: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee after: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: Yuhuatai District of Nanjing City, Jiangsu province 210012 outside the Chinese small especially Jia Ao No. 3 Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200514 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210000 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: 211103 No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co.,Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131009 |
|
| CX01 | Expiry of patent term |