CN2818934Y - Bearing protecting sealer by magnetic force - Google Patents
Bearing protecting sealer by magnetic force Download PDFInfo
- Publication number
- CN2818934Y CN2818934Y CN 200520105621 CN200520105621U CN2818934Y CN 2818934 Y CN2818934 Y CN 2818934Y CN 200520105621 CN200520105621 CN 200520105621 CN 200520105621 U CN200520105621 U CN 200520105621U CN 2818934 Y CN2818934 Y CN 2818934Y
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- China
- Prior art keywords
- ring
- static friction
- friction ring
- seal arrangement
- gland
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The utility model relates to a bearing protecting sealer with magnetic force, which is arranged on a shaft and is arranged at one side of the bearing, and the utility model comprises a rotating part and a stationary part. The rotating part comprises a driving ring base, a plurality of magnets which are arranged in the driving ring base, a rotation transmitting element which is arranged between the driving ring base and the shaft and can transmit the shaft rotation to the driving ring base, and a movable friction ring which is arranged at the inner end of the driving ring base and faces the stationary part. The stationary part comprises a press cover ring, a static friction ring and an elastic floating ring which can axially connect a press cover ring and the static friction ring, and the static friction ring and/or the press cover ring are made of magnetic attachment materials. The static friction ring is axially connected wit the press cover ring at the inner end via the elastic floating ring, a free gap is radically arranged between the static friction ring and the press cover ring without mutual interference, and the movable friction ring can be rotatablely sealed and jointed on the outer end surface of the static friction ring. The elastic floating ring is preferred to be a sealed hollow cavity corrugated pipe, and a stopping which can prevent the static friction ring from inwards excessive moving is preferred and is arranged on the press cover ring.
Description
Technical field
The utility model relates to a kind of bearing protection seal arrangement that uses magnetic force.
Background technique
In such as machinery such as gear-box, pump, blower fans, bearing need be worked under lubricating condition.In most cases, the damage of bearing is that leakage and entering of environmental contaminants because of lubricant oil causes.Known in the art bearing protective measure comprises asphalt felt, rubber oil sea, mechanical oil sealing etc.The asphalt felt sealing is unreliable, exists to leak.The shortcoming of rubber oil sea is easily aging, the wearing and tearing axle, and Applicable temperature, linear velocity are low, and the life-span is short.The common mechanical oil sealing will adopt dynamic and static ring and nose balance mechanism, to the equipment precision requirement height; And in most machinery, using the axle of mechanical oil sealing to have problems such as axial float, circular runout, sealing effect is undesirable.
In order to improve sealing effect, U. S. Patent 5,730 discloses a kind of self-aligning magnetic rotating sealing device in 447, and it comprises the stationary part that is loaded in the apparatus casing and along with the rotating part of axle rotation.Described stationary part comprises the housing seat that is fixed in the apparatus casing and is connected stationary ring in the housing seat by O shape circle, described O shape circle is assemblied between the interior perimeter surface of the outer surface of stationary ring and housing seat, so that stationary ring has to a certain degree tilt capability with respect to the housing seat.Described rotating part comprises the rotary seal seat, and it has: a plurality of magnets of Bu Zhiing along the circumferential direction are used to the stationary ring and the pushing of housing seat that utilize magnetic force that the rotary seal seat is made towards the ferromagnetic steel of being crossed by cure process; Be arranged on the O shape circle in week in the rotary seal seat, it forms sealing between rotary seal seat and axle, and the driven rotary sealing seat rotates together with the axis; And from the rotary seal seat towards the outstanding seal ring of that end face of stationary ring, its in pushing and pressing under the effect of described magnetic force on the stationary ring end face, and with respect to the stationary ring end face with the rotation of sliding of the mode of sealing.Because stationary ring can tilt with respect to the housing seat, so the orientation that stationary ring can be adapted to the rotary seal seat changes, and improves the sealing effect and the effect in working life to reach.
Yet in the magnetic rotating sealing device of above-mentioned U. S. Patent, because stationary ring directly upwards is connected with the housing seat by O shape circle at it, therefore, stationary ring only is to realize by the resiliently deformable that O shape is enclosed with respect to the inclination of housing seat.The magnitude of inclination that this means stationary ring is inevitable very little, and is difficult in radial and axial mobile.Therefore, stationary ring is very little to the adaptability that rotary seal seat orientation changes.Cause changeing the sealing seat orientation when changing greatly at axial float, circular runout etc. owing to assembly error and axle, stationary ring can not change self orientation neatly, and this must cause leakage occurring between the seal ring of rotary seal seat and the stationary ring.
The model utility content
The utility model is intended to solve problems of the prior art, and a kind of adaptability is strong to provide, the bearing protection seal arrangement of good airproof performance, long service life.
To achieve these goals, the utility model proposes a kind of bearing protection seal arrangement that uses magnetic force, it is arranged at the side that bearing was gone up and be positioned to axle, and described bearing protection seal arrangement comprises rotating part and stationary part; Described rotating part comprises the transmission ring seat, be arranged in a plurality of magnets in the transmission ring seat, be loaded between transmission ring seat and the axle with the rotation with axle be delivered to the transmission ring seat the rotation transmitting element, be installed in the inner of transmission ring seat and towards the outstanding kinetic friction ring of stationary part; Described stationary part comprises gland ring, static friction ring and the elastic floating ring that vertically gland ring is linked to each other with the static friction ring, and described static friction ring and/or described gland ring are made (preferably being that described static friction ring is made by the magnetic attachment material at least) by the magnetic attachment material; The static friction ring is held within it by described elastic floating ring and is connected vertically on the gland ring, has free clearance and mutual noninterference between static friction ring and the gland ring diametrically, and the kinetic friction ring rotatably seals the exterior edge face of applying static friction ring.
As an advantageous measure, can be provided with the backstop that stops the static friction ring excessively to move inward on the gland ring.The collar flange that described backstop can be provided in a side of in the internal surface of gland ring and stretch towards aixs cylinder.Perhaps, described backstop can be provided in a side of in the internal surface of gland ring and a plurality of projections of stretching towards aixs cylinder or be fixed on a plurality of pins on this internal surface.
Preferably, described elastic floating ring is airtight cavity bellows.The axial inner ends of described bellows is connected on the gland ring, and axial outer end is connected on the static friction ring.Preferably, described bellows has and vertical inner end wall and the outer end wall of described axle, and described inner end wall and outer end wall are fixed on static friction ring and the gland ring by installing ring respectively.
Preferably, described magnet be the utmost point to parallel and axial magnetic post, and along the circumferential direction be fixed in the corresponding mounting hole in the transmission ring seat.
Preferably, the outer end of described static friction ring is provided with towards the step of kinetic friction ring, and described step and the exterior edge face sliding contact of kinetic friction ring are by fine finishing.
Preferably, described rotation transmitting element is to be inlaid in the transmission ring seat and to be compressed in O shape circle on the described axle.
According to technique scheme of the present utility model, the static friction ring is held within it by the elastic floating ring and axially is connected on the gland ring, thereby makes the static friction ring both can tilt, and can vertically and move radially again.And, between static friction ring and the gland ring diametrically without any being connected, therefore described inclination and move and can in a big way, take place.Therefore, strong, the good airproof performance of bearing of the present utility model protection seal arrangement adaptability, long service life.
In addition, owing to be provided with backstop, inboard excessive moving to prevent the static friction hoop, thereby can protect the elastic floating ring.Therefore improved the Safety performance of bearing protection seal arrangement widely, thereby further improved its working life.
Description of drawings
Fig. 1 is the sectional view of the bearing protection seal arrangement of use magnetic force of the present utility model.
Fig. 2 is the sectional view of the stationary part of bearing protection seal arrangement.
Fig. 3 is the sectional view of the rotating part of bearing protection seal arrangement.
Embodiment
Embodiment of the present utility model is described with reference to the accompanying drawings.
Referring to Fig. 1; be installed under the situation in the equipment by the bearing (not shown) at axle 1; the bearing protection seal arrangement of use magnetic force of the present utility model is installed between apparatus casing 8 and the axle 1, is arranged in equipment and bearing that supporting axle with protection.That side of bearing just is equipped with in reference character B indication equipment inboard among Fig. 1, the reference number C indication equipment outside.
Bearing protection seal arrangement comprises rotating part 2 and stationary part 5.Stationary part 5 is sleeved on the axle 1 with certain radial clearance, and is fixed in the apparatus casing 8.When axle 1 rotation, stationary part 5 is maintained fixed.Rotate with axle 1 thereby be installed in to rotating part 2 no radial clearances on the axle 1, and form the sliding contact that seals with stationary part 5.By bearing protection seal arrangement, between axle 1 and apparatus casing 8, form sealing, so that inboard B of equipment and equipment outside C are isolated.The oil leak that can prevent the inboard B of equipment like this is to equipment outside C, and the inboard B of pollutant access arrangements such as dust that prevents equipment outside C, is positioned at the bearing of the inboard B of equipment with protection.
Referring to Fig. 2, all elements that constitute described stationary part 5 are and axle 1 annular or the tubular of coaxial setting basically, and comprise gland ring 52, static friction ring 62 and the elastic floating ring that vertically gland ring is linked to each other with the static friction ring (elastic compensating element) 54.
Elastic floating ring 54 is loaded in the holding space of gland ring 52, and is made by the material of elastically deformable.Elastic floating ring 54 is tubular, and its axial end (the inner) is connected on the gland ring 52, and axially the other end (outer end) is connected on the static friction ring 62, thereby has constituted the axial connection set that static friction ring 62 is linked to each other with gland ring 52.As a kind of optimal way, what elastic floating ring 54 adopted is airtight elastic material (for example rubber) cavity bellows, and has inner end wall 70 and the outer end wall 72 vertical with spool 1, and described end wall is connected on gland ring 52 and the static friction ring 62.Preferably, inner end wall 70 is clamped between straight wall 68 and the installing ring 58 and for example screw is fastening by fastening piece 56, and outer end wall 72 is clamped at that for example screw is fastening between the interior edge face of installing ring 60 and static friction ring 62 and by fastening piece 56.By elastic floating ring 54, gland ring 52 and static friction ring 62 are combined in together and form whole stationary part 5.
Can see that static friction ring 62 is only held by described elastic floating ring and is connected vertically on the gland ring 52 within it, have radial clearance between static friction ring 62 and the gland ring 52, and not have any radially connection.This point has significant advantage with respect to stationary ring in the U. S. Patent of quoting previously 5,730,447 in the structure that it directly upwards is connected with the housing seat by O shape circle.Particularly, owing to have free clearance and mutual noninterference (promptly not having any no annexation) diametrically between static friction ring 62 of the present utility model and the gland ring 52, therefore static friction ring 62 is with respect to the inclination of gland ring 52 or move more easily, and amplitude is bigger.
Obviously, elastic floating ring 54 is not limited to the mode shown in the figure with the Placement of gland ring 52 and static friction ring 62.According to principle of the present utility model, those skilled in the art can envision other suitable Placement.For example, inner end wall 70 is not to be fixed on the straight wall 68 by fastening piece 56, and in fact, by magnetic force as described later, inner end wall 70 always is pushed and is against on the straight wall 68.Therefore, have at the elastic floating ring under the situation of enough intensity,, still can realize the purpose of this utility model even inner end wall 70 is not fixedlyed connected with gland ring 52.Equally, outer end wall 72 neither be fixed on the static friction ring 62.Fixedly connected benefit is, stationary part 5 suitable whole assemblys, and assembling easily, and sealability is higher.Yet, if inner end wall 70 is not to be fixedly connected on the straight wall 68, will from gland ring 52, take out as the static friction ring 62 and/or the elastic floating ring 54 of wearing detail easily, so that change.
In addition, inner end wall 70 is not to link to each other with straight wall 68.Those skilled in the art can imagine, even inner end wall 70 is connected on the internal surface of ring wall 66, still can realize the purpose of this utility model.
In sum, it is to make static friction ring 62 is remained in the gland ring 52 by its axial inner ends that the utility model adopts the purpose of elastic floating ring 54, so that static friction ring 62 can tilt largely and axially and move radially.Based on above-mentioned principle, can envision the various concrete linkage structure of elastic floating ring 54.
Referring to Fig. 3, rotating part 2 comprises: have the transmission ring seat 22 of pretightening force, it has the endoporus more bigger than the external diameter of axle 1, so that transmission ring seat 22 is sleeved on the axle 1 with certain radial clearance, transmission ring seat 22 is preferably made by materials such as stainless steel, copper; Along the circumferential direction be arranged in a plurality of magnets 24 in the transmission ring seat 22, they are used for gland ring 52 and static friction ring 62 are produced adsorption force, to produce described pretightening force, thereby transmission ring seat 22 is pushed against on static friction ring 62, the described magnet 24 preferred forms that adopt the utmost point to parallel and axial magnetic post, and in fixing (for example being press-fitted) the corresponding mounting hole in transmission ring seat 22; Be loaded on the rotation transmitting element 26 that is delivered to transmission ring seat 22 between transmission ring seat 22 and the axle 1 with rotation with axle 1, it preferably adopts the form of O shape circle, this O shape circle is inlaid in the annular groove in the bore area of transmission ring seat 22, and be compressed on axle 1 outer surface, thereby drive transmission ring seat 22 with axle 1 rotation, O shape circle is preferably made by the elasticity resistant material; Kinetic friction ring 28; it is installed in the annular groove in that end face (interior edge face) of stationary part 5 (just towards the inboard B of equipment) that is formed at transmission ring seat 22; and stretch out intended distance to the inboard B of equipment from this end face; under the assembled state of bearing protection seal arrangement; be fitted under the adsorption force effect that kinetic friction ring 28 produces by means of magnet on the exterior edge face of static friction ring 62 (under the situation that is provided with step 64; be fitted on the exterior edge face of step 64); so that the mode with the exterior edge face of the ring of sliding contact static friction hermetically 62 (or step 64) is rotated; kinetic friction ring 28 can be made by multiple composite, for example tetrafluoroethylene; carbon graphite etc.
The quantity of magnet 24 without limits, as long as they can produce enough magnetic adsorbabilities with the kinetic friction ring rotatably sealing paste be combined in static friction ring (or step) and go up.Equally, the quantity that constitutes the O shape circle of rotation transmitting element 26 can be one, also can be a plurality of.The form of rotation transmitting element 26 also is not limited to O shape circle, but can also adopt the element with sealing and power transmission performance of other form.
Under the working state of bearing protection seal arrangement, kinetic friction ring 28 pushes against on the step 64 of static friction ring 62 in the mode of slide rotation and sealing.Like this, by rotating part 2 and stationary part 5, between axle 1 and apparatus casing 8, produced reliable rotary seal.
According to another useful embodiment of the present utility model, on gland ring 52, be provided with backstop 74, be used to stop static friction ring 62 excessively mobile to the inboard B of equipment.Preferably, described backstop 74 is to be located in ring wall 66 internal surfaces and towards the collar flange of axle 1 projection with the outer end of ring wall 66 is separated by a distance, perhaps can adopt a plurality of projections that are provided with in the same manner or be fixed on a plurality of pins on ring wall 66 internal surfaces.Static friction ring 62 has corresponding radial flange 76.Under normal state, this radial flange 76 and the backstop 74 axial relative and intended distances of being separated by.Under extreme working state, if static friction ring 62 is subjected to too big end thrust, then static friction ring 62 moves towards the inboard B of equipment, this moves final meeting and is prevented from because of radial flange 76 is resisted against on the backstop 74, thereby prevents static friction ring 62 from excessively moving and cause elastic floating ring 54 by excess compression.
As previously mentioned, static friction ring 62 of the present utility model axially is connected on the gland ring 52 by elastic floating ring 54, thereby makes static friction ring 62 both can tilt, and can vertically and move radially again.And, between static friction ring and the gland ring diametrically without any being connected, therefore described inclination and move and can in a big way, take place.Therefore, strong, the good airproof performance of bearing of the present utility model protection seal arrangement adaptability, long service life.In addition, owing to be provided with backstop 74, excessively mobile to prevent static friction ring 62 towards the inboard B of equipment, thus elastic floating ring 54 can be protected.Therefore improved the Safety performance of bearing protection seal arrangement widely, thereby further improved its working life.
More than describe preferred embodiment of the present utility model in detail.Those skilled in the art will appreciate that above description is only for illustrative, and not restrictive.Under the prerequisite that does not break away from basic principle of the present utility model and scope, can make various modifications to previously described concrete structure.
Claims (10)
1. one kind is used the bearing of magnetic force to protect seal arrangement, and it is arranged at the side that bearing was gone up and be positioned to axle, and described bearing protection seal arrangement comprises rotating part and stationary part;
Described rotating part comprises the transmission ring seat, be arranged in a plurality of magnets in the described transmission ring seat, be loaded between described transmission ring seat and the described axle with the rotation with axle be delivered to the transmission ring seat the rotation transmitting element, be installed in the inner of described transmission ring seat and towards the outstanding kinetic friction ring of described stationary part;
It is characterized in that described stationary part comprises that gland ring, static friction ring and the elastic floating ring that vertically described gland ring is linked to each other with the static friction ring, described static friction ring and/or described gland ring made by the magnetic attachment material; Described static friction ring is held within it by described elastic floating ring and is connected vertically on the gland ring, has free clearance and mutual noninterference between static friction ring and the gland ring diametrically, and the kinetic friction ring rotatably seals the exterior edge face of applying static friction ring.
2. bearing protection seal arrangement as claimed in claim 1 is characterized in that gland ring is provided with the backstop that stops the static friction ring excessively to move inward.
3. bearing as claimed in claim 2 protection seal arrangement is characterized in that, the collar flange that described backstop is provided in a side of in the internal surface of gland ring and stretches towards aixs cylinder.
4. bearing as claimed in claim 2 protection seal arrangement is characterized in that, described backstop is provided in a side of in the internal surface of gland ring and a plurality of projections of stretching towards aixs cylinder or be fixed on a plurality of pins on this internal surface.
5. as arbitrary described bearing protection seal arrangement in the claim 1 to 4, it is characterized in that described elastic floating ring is airtight cavity bellows.
6. bearing protection seal arrangement as claimed in claim 5 is characterized in that the axial inner ends of described bellows is connected on the gland ring, and axial outer end is connected on the static friction ring.
7. bearing protection seal arrangement as claimed in claim 6 is characterized in that, described bellows has and vertical inner end wall and the outer end wall of described axle, and described inner end wall and outer end wall are fixed on static friction ring and the gland ring by installing ring respectively.
8. as arbitrary described bearing protection seal arrangement in the claim 1 to 4, it is characterized in that, described magnet be the utmost point to parallel and axial magnetic post, and along the circumferential direction be fixed in the corresponding mounting hole in the transmission ring seat.
9. as arbitrary described bearing protection seal arrangement in the claim 1 to 4, it is characterized in that the outer end of described static friction ring is provided with towards the step of kinetic friction ring, described step and the exterior edge face sliding contact of kinetic friction ring are by fine finishing.
10. as arbitrary described bearing protection seal arrangement in the claim 1 to 4, it is characterized in that described rotation transmitting element is to be inlaid in the transmission ring seat and to be compressed in O shape circle on the described axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520105621 CN2818934Y (en) | 2005-08-17 | 2005-08-17 | Bearing protecting sealer by magnetic force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520105621 CN2818934Y (en) | 2005-08-17 | 2005-08-17 | Bearing protecting sealer by magnetic force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2818934Y true CN2818934Y (en) | 2006-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520105621 Expired - Lifetime CN2818934Y (en) | 2005-08-17 | 2005-08-17 | Bearing protecting sealer by magnetic force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2818934Y (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392837B (en) * | 2007-09-18 | 2012-07-18 | 刘讯岐 | Opposed internal positioning magnetic mechanical seal |
| CN103112322A (en) * | 2013-02-28 | 2013-05-22 | 湖南大学 | Device for automatically balancing tire pressure in running process of automobile |
| CN103234051A (en) * | 2013-04-14 | 2013-08-07 | 丹东克隆集团有限责任公司 | Magnetic force type water seal mechanism for pump |
| CN103818201A (en) * | 2014-03-10 | 2014-05-28 | 湖南大学 | Device for automatic balance of automobile tire pressure |
| CN104696524A (en) * | 2015-02-13 | 2015-06-10 | 江苏科奥流体科技有限公司 | Mechanical sealing structure of hot water pump |
| CN105333153A (en) * | 2015-12-01 | 2016-02-17 | 李富立 | Magnetic force shaft sealing device and processing method thereof |
| CN105340447A (en) * | 2013-11-28 | 2016-02-24 | 株式会社久保田 | Delivery mechanism of agriculture-used material feeding device |
| CN107923538A (en) * | 2015-08-10 | 2018-04-17 | 埃克森美孚上游研究公司 | Apparatus and method for the dry gas sealing of magnetic force control |
| CN108561557A (en) * | 2018-05-16 | 2018-09-21 | 苏州科耐迈克低温装备科技有限公司 | Magnetic compensation mechanically-sealing apparatus |
| EP3604870A4 (en) * | 2017-03-30 | 2020-12-23 | Eagle Industry Co., Ltd. | Seal device |
-
2005
- 2005-08-17 CN CN 200520105621 patent/CN2818934Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101392837B (en) * | 2007-09-18 | 2012-07-18 | 刘讯岐 | Opposed internal positioning magnetic mechanical seal |
| CN103112322B (en) * | 2013-02-28 | 2016-03-30 | 湖南大学 | For the device of self-equalizing tire pressure in vehicle traveling process |
| CN103112322A (en) * | 2013-02-28 | 2013-05-22 | 湖南大学 | Device for automatically balancing tire pressure in running process of automobile |
| CN103234051A (en) * | 2013-04-14 | 2013-08-07 | 丹东克隆集团有限责任公司 | Magnetic force type water seal mechanism for pump |
| CN105340447B (en) * | 2013-11-28 | 2018-02-23 | 株式会社久保田 | The delivering mechanism of agricultural materials feedway |
| CN105340447A (en) * | 2013-11-28 | 2016-02-24 | 株式会社久保田 | Delivery mechanism of agriculture-used material feeding device |
| CN103818201A (en) * | 2014-03-10 | 2014-05-28 | 湖南大学 | Device for automatic balance of automobile tire pressure |
| CN104696524A (en) * | 2015-02-13 | 2015-06-10 | 江苏科奥流体科技有限公司 | Mechanical sealing structure of hot water pump |
| CN107923538A (en) * | 2015-08-10 | 2018-04-17 | 埃克森美孚上游研究公司 | Apparatus and method for the dry gas sealing of magnetic force control |
| CN107923538B (en) * | 2015-08-10 | 2020-03-03 | 埃克森美孚上游研究公司 | Apparatus and method for magnetically controlled dry gas seal |
| CN105333153A (en) * | 2015-12-01 | 2016-02-17 | 李富立 | Magnetic force shaft sealing device and processing method thereof |
| CN105333153B (en) * | 2015-12-01 | 2017-02-01 | 李富立 | Magnetic force shaft sealing device and processing method thereof |
| EP3604870A4 (en) * | 2017-03-30 | 2020-12-23 | Eagle Industry Co., Ltd. | Seal device |
| CN108561557A (en) * | 2018-05-16 | 2018-09-21 | 苏州科耐迈克低温装备科技有限公司 | Magnetic compensation mechanically-sealing apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150817 Granted publication date: 20060920 |
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| EXPY | Termination of patent right or utility model |