CN208778699U - The magnetic fluid seal device of bellows auxiliary seal - Google Patents
The magnetic fluid seal device of bellows auxiliary seal Download PDFInfo
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- CN208778699U CN208778699U CN201821058118.XU CN201821058118U CN208778699U CN 208778699 U CN208778699 U CN 208778699U CN 201821058118 U CN201821058118 U CN 201821058118U CN 208778699 U CN208778699 U CN 208778699U
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- bellows
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Abstract
The utility model discloses a kind of magnetic fluid seal devices of bellows auxiliary seal, comprising: sealing element shell；Cylinder pin socket, cylinder pin socket are controlled and are positioned for gap；Bellows, bellows upper flanges and bellows lower end flange, bellows respectively with bellows upper flanges and bellows lower end flange welding, the first sealing ring is installed in bellows upper flanges seal groove, second sealing ring is installed in bellows lower end flange sealing trough, to form bellows component, wherein, bellows upper flanges are bonded with sealing element shell, and bellows lower end flange and cylinder pin socket, there are prepsetting gaps for sealing element shell.The device uses bellows auxiliary seal, can play buffer function using the elasticity of bellows when circular runout occurs for shaft, to effectively solve the problems, such as that the sealing element caused by the bounce of shaft damages under high-speed working condition.
Description
Technical field
The utility model relates to mechanical engineering technical field of sealing technology, in particular to a kind of magnetic liquid of bellows auxiliary seal
Body sealing device.
Background technique
Magnetic fluid sealing has many advantages, such as zero leakage, low cost, long-life, thus is used widely.However
In practical applications, especially under the operating condition of high speed, since installation accuracy, machining accuracy are limited, shaft exists in radial direction
Biggish bounce, and the gap between magnetic fluid sealing part and shaft is smaller, easily there is a phenomenon where touch mill and fatigue.These
Phenomenon has seriously affected the service life of magnetic fluid sealing, while also reducing the reliability of sealing.
In the related technology, the variable magnetic fluid seal device of magnetic fluid seal device such as seal clearance, described device
The seal clearance of magnetic fluid sealing is adjusted by adjusting the position of trapezoidal movable magnetic inductive block to reduce shaft and sealing element
Touch mill, but seal failure problem caused by seal clearance cyclically-varying, and the device when not can solve shaft bounce
Using active control, the control in gap can not be adaptively carried out at work.
Utility model content
The utility model is intended to solve at least some of the technical problems in related technologies.
For this purpose, the purpose of this utility model is that propose a kind of magnetic fluid seal device of bellows auxiliary seal, it should
Device using the elasticity of bellows can play buffer function when circular runout occurs for shaft, effectively solve under high-speed working condition by
The sealing element caused by the bounce of shaft damages problem.
In order to achieve the above objectives, on the one hand the utility model proposes the magnetic fluid sealing of a kind of bellows auxiliary seal
Device, comprising: sealing element shell；Cylinder pin socket, the cylinder pin socket are controlled and are positioned for gap；Bellows, ripple
Pipe upper flanges and bellows lower end flange, the bellows respectively with the bellows upper flanges and the bellows lower end
Flange welding is equipped with the first sealing ring, the bellows lower end flange sealing trough in the bellows upper flanges seal groove
In the second sealing ring is installed, to form bellows component, wherein the bellows upper flanges and the sealing element shell paste
It closes, the bellows lower end flange and the cylinder pin socket, there are prepsetting gaps for the sealing element shell.
The magnetic fluid seal device of the bellows auxiliary seal of the utility model embodiment, in the base of magnetic fluid sealing
Auxiliary seal is carried out with bellows on plinth, uses bellows auxiliary seal, ripple can be utilized when circular runout occurs for shaft
The elasticity of pipe plays buffer function, effectively solves the damage of the sealing element caused by the bounce of shaft under high-speed working condition and asks
Topic.
Further, the prepsetting gap is 0.1mm to 2mm.
Further, the bellows upper flanges are fixedly connected by bolt with the sealing element shell, the ripple
It manages lower end flanges and is threaded hole, be attached and fix by screw thread and the sealing cavity shell.
Further, further includes: the first rolling bearing and the second rolling bearing, first rolling bearing are mounted on described
In sealing element shell inner hole, and positioned by the side of the shaft shoulder of shaft and the inner convex platform of the sealing element shell, it is described
Second rolling bearing is mounted in the inner hole of the sealing element shell, and with another side contacts of the shaft shoulder of shaft.
Further, further includes: magnetic fluid sealing component, the magnetic fluid sealing component include first order boots,
Second level boots, third level boots, third sealing ring, the 4th sealing ring, the 5th sealing ring, the first permanent magnet and the second permanent magnet, it is described
Third sealing ring is mounted in the seal groove of the first order boots external cylindrical surface, and the 4th sealing ring is mounted on the second level
In the seal groove of boots external cylindrical surface, the 5th sealing ring is mounted in the seal groove of the third level boots external cylindrical surface, described
First permanent magnet is mounted on first order boots lower end surface, and second permanent magnet is mounted on second level boots lower end surface.
Further, further includes: described to be mounted on second rolling bearing lower end surface every magnetic orientation set every magnetic orientation set
On, the magnetic fluid sealing component is mounted on every on magnetic orientation set lower end surface.
Further, straight pin, the inside boss of the cylinder pin socket are installed in the pin hole of the cylinder pin socket
Upper surface and the lower end surface of the third level boots are in close contact.
Further, further includes: the circular hole of gland, the gland upper surface clasps the straight pin, and compresses the circle
The lower end surface of pin sleeve, and be connected through a screw thread and the bellows lower end flanged joint and fixation, wherein the straight pin
There are preset radial gaps between the gland.
Further, the preset radial gap is 2mm to 6mm.
Further, wherein the first order boots, the second level boots, the third level boots select magnetic property material
Material, first permanent magnet, second permanent magnet select Ru-Fe-Mn's permanent magnet.
The additional aspect of the utility model and advantage will be set forth in part in the description, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The utility model is above-mentioned and/or additional aspect and advantage from the following description of the accompanying drawings of embodiments will
Become obvious and be readily appreciated that, in which:
Fig. 1 is the structure according to the magnetic fluid seal device of the bellows auxiliary seal of the utility model one embodiment
Schematic diagram；
Fig. 2 is according to the enlarged diagram at the location A in Fig. 1 of the utility model one embodiment.
Description of symbols:
Magnetic fluid seal device 10, sealing element shell 100, the cylinder pin socket 200, straight pin of bellows auxiliary seal
210, bellows component 300, bellows 310, bellows upper flanges 320, the first sealing ring 321, bellows lower end flange
330, the second sealing ring 331, the first rolling bearing 400, the second rolling bearing 500, magnetic fluid sealing component 600, the first order
Boots 610, second level boots 620, third level boots 630, third sealing ring 640, the 4th sealing ring 650, the 5th sealing ring 660, first
Permanent magnet 670, the second permanent magnet 680 cover 700, gland 800 and magnetic liquid 900 every magnetic orientation.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
The magnetic liquid for describing the bellows auxiliary seal proposed according to the utility model embodiment with reference to the accompanying drawings is close
Seal apparatus.
Fig. 1 is the structural representation of the magnetic fluid seal device of the bellows auxiliary seal of the utility model one embodiment
Figure.
As shown in Figure 1, the magnetic fluid seal device 10 of the bellows auxiliary seal includes: sealing element shell 100, cylinder
Pin socket 200 and bellows component 300.
Wherein, sealing element shell 100.The cylinder pin socket 200 is controlled and is positioned for gap.Bellows 310 is distinguished
It is welded with bellows upper flanges 320 and bellows lower end flange 330, the is equipped in 320 seal groove of bellows upper flanges
One sealing ring 321 is equipped with the second sealing ring 331 in 330 seal groove of bellows lower end flange, to form bellows component 300,
Wherein, bellows upper flanges 320 are bonded with sealing element shell 100, bellows lower end flange 330 and cylinder pin socket 200, close
There are prepsetting gaps for sealing shell 100.The device 10 of the utility model embodiment uses bellows auxiliary seal, can turn
Buffer function is played using the elasticity of bellows when circular runout occurs for axis, to effectively solve under high-speed working condition due to shaft
Bounce caused by sealing element damage problem.
It is understood that the utility model embodiment carried out on the basis of magnetic fluid sealing with bellows 310 it is auxiliary
Sealing is helped, i.e., is connected with sealing element shell 100 and bellows upper flanges 320, lower end and bellows lower end flange 330
Between there are certain gaps, while using straight pin, No. 1 cylinder pin socket and No. 2 cylinder pin sockets carry out gaps control with
Positioning, to efficiently solve at high speeds, bounce occurs for shaft to touch mill with sealing element, so as to cause close
The problem of seal apparatus reduced service life, sealing performance reduces.
Specifically, as shown in Figure 1, bellows 310 respectively with bellows upper flanges 320, bellows lower end flange 330
Welding, the first sealing ring 321 are mounted in the seal groove of bellows upper flanges 320, and the second sealing ring 331 is mounted on bellows
In the seal groove of lower end flanges 330, bellows component 300 is constituted.Under cylinder pin socket 200, sealing element shell 100 and bellows
Radially and axially there is gap in end flanges 330, i.e., stay between cylinder pin socket 200 and bellows lower end flange 330
There is gap, there are gaps between sealing element shell 100 and bellows lower end flange 330.
Further, in one embodiment of the utility model, prepsetting gap is 0.1mm to 2mm.
Further, in one embodiment of the utility model, bellows upper flanges 320 pass through bolt and sealing element
For shell 100 by being fixedly connected, bellows lower end flange 330 is threaded hole, can pass through screw thread and sealing cavity shell 100
It is attached and fixes.
Further, in one embodiment of the utility model, the device 10 of the utility model embodiment further include: the
One rolling bearing 400 and the second rolling bearing 500.Wherein, the first rolling bearing 400 is mounted in 100 inner hole of sealing element shell,
And positioned by the side of the shaft shoulder of shaft and the inner convex platform of sealing element shell 100, the second rolling bearing 500 is mounted on close
In the inner hole of sealing shell 100, and with another side contacts of the shaft shoulder of shaft.
Further, in one embodiment of the utility model, the device 10 of the utility model embodiment further include: magnetic
Property hydraulic seal component 600.Wherein, magnetic fluid sealing component 600 includes first order boots 610, second level boots 620, the third level
Boots 630, third sealing ring 640, the 4th sealing ring 650, the 5th sealing ring 660, the first permanent magnet 670 and the second permanent magnet 680,
Third sealing ring 640 is mounted in the seal groove of 610 external cylindrical surface of first order boots, and the 4th sealing ring 650 is mounted on second level boots
In the seal groove of 620 external cylindrical surfaces, the 5th sealing ring 660 is mounted in the seal groove of 630 external cylindrical surface of third level boots, and first forever
Magnet 670 is mounted on 610 lower end surface of first order boots, and the second permanent magnet 680 is mounted on 620 lower end surface of second level boots.
Further, in one embodiment of the utility model, wherein first order boots 610, second level boots 620, third
Grade boots 630 can select magnetic property material, and the first permanent magnet 670, the second permanent magnet 680 can select Ru-Fe-Mn's permanent magnetism
Body.
It is understood that first order boots 610, second level boots 620, third level boots 630 can select magnetic property good
Good material, such as electrical pure iron, certainly, about the material of magnetic property material and permanent magnet, those skilled in the art can root
It is selected according to actual conditions, only with electrical pure iron and Ru-Fe-Mn's permanent magnet as an example, herein in the utility model embodiment
It is not specifically limited.
Further, in one embodiment of the utility model, the device 10 of the utility model embodiment further include: every
Magnetic orientation set 700.Wherein, it is mounted on 500 lower end surface of the second rolling bearing every magnetic orientation set 700, magnetic fluid sealing component
500 are mounted on every on 700 lower end surfaces of magnetic orientation set.
Further, in one embodiment of the utility model, as shown in Fig. 2, pacifying in the pin hole of cylinder pin socket 200
Equipped with straight pin 210, the inside boss upper surface of cylinder pin socket 200 and the lower end surface of third level boots 630 are in close contact.
Further, in one embodiment of the utility model, the device 10 of the utility model embodiment further include: pressure
Lid 800.Wherein, the circular hole of 800 upper surface of gland clasps straight pin 210, and compresses the lower end surface of cylinder pin socket 200, and lead to
It crosses threaded connection to connect and fix with bellows lower end flange 330, wherein there are default diameters between straight pin 210 and gland 800
To gap.
In one embodiment of the utility model, preset radial gap can be 2mm to 6mm.
Further, the device 10 of the utility model embodiment further include: magnetic liquid 900.Wherein, magnetic liquid 900
Type the magnetic liquids of different base fluids can be selected according to the difference of sealing gas.
It should be noted that the technological designs such as magnetic fluid sealing component, bellows component, shafting assembly can be according to tool
Body sealing operating condition is selected, and is not specifically limited herein.
To sum up, bellows and bellows upper flanges and bellows lower end flange welding, bellows upper flanges and sealing
The fitting of part shell, bellows lower end flange and cylinder pin socket, there are gaps for sealing element shell.In actual operation, ripple
End flanges are used with fixed rack and are threadedly coupled under managing, the sealing element shell that can not be moved, and be connected with bellows upper flanges
Connected with shaft by rolling bearing, it can be with shaft run-out be turned, due to sealing element shell and straight pin and straight pin
There are radial clearances between bellows lower end flange in radial directions for sleeve assembly, therefore are avoided that rigidity occurs for sealing element
Impact is to damage, simultaneously because the elasticity of bellows, can provide rebound in shaft generating period circular runout
Power keeps the gap of entire sealing element basicly stable.In addition to this, bellows equally has good sealing performance, Neng Gouzuo
For the auxiliary seal of entire sealing element.
According to the magnetic fluid seal device for the bellows auxiliary seal that the utility model embodiment proposes, in magnetic liquid
Auxiliary seal is carried out with bellows on the basis of sealing, uses bellows auxiliary seal, it can be when circular runout occurs for shaft
Buffer function is played using the elasticity of bellows, effectively solves the sealing element caused by the bounce of shaft under high-speed working condition
Damage problem.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.The meaning of " plurality " is at least two, such as two in the description of the present invention,
It is a, three etc., unless otherwise specifically defined.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
It states and is necessarily directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be with
It can be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this field
Technical staff can by the feature of different embodiments or examples described in this specification and different embodiments or examples into
Row combination and combination.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (10)
1. a kind of magnetic fluid seal device of bellows auxiliary seal characterized by comprising
Sealing element shell；
Cylinder pin socket, the cylinder pin socket are controlled and are positioned for gap；And
Bellows, bellows upper flanges and bellows lower end flange, the bellows respectively with the bellows upper flanges
With the bellows lower end flange welding, the first sealing ring, the ripple are installed in the bellows upper flanges seal groove
The second sealing ring is installed in the flange sealing trough of pipe lower end, to form bellows component, wherein the bellows upper flanges with
Sealing element shell fitting, the bellows lower end flange with the cylinder pin socket, there are pre- for the sealing element shell
If gap.
2. the magnetic fluid seal device of bellows auxiliary seal according to claim 1, which is characterized in that described default
Gap is 0.1mm to 2mm.
3. the magnetic fluid seal device of bellows auxiliary seal according to claim 1, which is characterized in that the ripple
Pipe upper flanges are fixedly connected by bolt with the sealing element shell, and the bellows lower end flange is threaded hole, are led to
It crosses screw thread and sealing cavity shell is attached and fixes.
4. the magnetic fluid seal device of bellows auxiliary seal according to claim 1, which is characterized in that further include:
First rolling bearing and the second rolling bearing, first rolling bearing are mounted in the sealing element shell inner hole, and
It is positioned by the side of the shaft shoulder of shaft and the inner convex platform of the sealing element shell, second rolling bearing is mounted on institute
In the inner hole for stating sealing element shell, and with another side contacts of the shaft shoulder of shaft.
5. the magnetic fluid seal device of bellows auxiliary seal according to claim 1, which is characterized in that further include:
Magnetic fluid sealing component, the magnetic fluid sealing component include first order boots, second level boots, third level boots, third
Sealing ring, the 4th sealing ring, the 5th sealing ring, the first permanent magnet and the second permanent magnet, the third sealing ring are mounted on described
In the seal groove of first order boots external cylindrical surface, the 4th sealing ring is mounted on the seal groove of the second level boots external cylindrical surface
In, the 5th sealing ring is mounted in the seal groove of the third level boots external cylindrical surface, and first permanent magnet is mounted on institute
First order boots lower end surface is stated, second permanent magnet is mounted on second level boots lower end surface.
6. the magnetic fluid seal device of bellows auxiliary seal according to claim 4, which is characterized in that further include:
It is described to be mounted on second rolling bearing lower end surface every magnetic orientation set every magnetic orientation set, the magnetic fluid sealing
Component is mounted on every on magnetic orientation set lower end surface.
7. the magnetic fluid seal device of bellows auxiliary seal according to claim 5, which is characterized in that the cylinder
Straight pin, the inside boss upper surface of the cylinder pin socket and the lower end of the third level boots are installed in the pin hole of pin socket
Face is in close contact.
8. the magnetic fluid seal device of bellows auxiliary seal according to claim 7, which is characterized in that further include:
The circular hole of gland, the gland upper surface clasps the straight pin, and compresses the lower end surface of the cylinder pin socket, and lead to
Cross threaded connection and the bellows lower end flanged joint and fixation, wherein there are pre- between the straight pin and the gland
If radial clearance.
9. the magnetic fluid seal device of bellows auxiliary seal according to claim 8, which is characterized in that described default
Radial clearance is 2mm to 6mm.
10. the magnetic fluid seal device of bellows auxiliary seal according to claim 5, which is characterized in that wherein,
The first order boots, the second level boots, the third level boots select magnetic property material, first permanent magnet,
Second permanent magnet selects Ru-Fe-Mn's permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821058118.XU CN208778699U (en) | 2018-07-04 | 2018-07-04 | The magnetic fluid seal device of bellows auxiliary seal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821058118.XU CN208778699U (en) | 2018-07-04 | 2018-07-04 | The magnetic fluid seal device of bellows auxiliary seal |
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| CN208778699U true CN208778699U (en) | 2019-04-23 |
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| CN201821058118.XU Active CN208778699U (en) | 2018-07-04 | 2018-07-04 | The magnetic fluid seal device of bellows auxiliary seal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679233A (en) * | 2018-07-04 | 2018-10-19 | 清华大学 | The magnetic fluid seal device of bellows auxiliary seal |
| CN112197009A (en) * | 2020-09-10 | 2021-01-08 | 清华大学 | Magnetic liquid sealing device's shell and stirred tank/reation kettle |
| CN113108064A (en) * | 2021-04-29 | 2021-07-13 | 北京交通大学 | Modularized magnetic liquid sealing device |
-
2018
- 2018-07-04 CN CN201821058118.XU patent/CN208778699U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679233A (en) * | 2018-07-04 | 2018-10-19 | 清华大学 | The magnetic fluid seal device of bellows auxiliary seal |
| CN108679233B (en) * | 2018-07-04 | 2023-11-17 | 清华大学 | Magnetic liquid sealing device for auxiliary sealing of corrugated pipe |
| CN112197009A (en) * | 2020-09-10 | 2021-01-08 | 清华大学 | Magnetic liquid sealing device's shell and stirred tank/reation kettle |
| US11125337B1 (en) | 2020-09-10 | 2021-09-21 | Tsinghua University | Housing for magnetic fluid sealing device and agitation kettle/reaction kettle |
| CN113108064A (en) * | 2021-04-29 | 2021-07-13 | 北京交通大学 | Modularized magnetic liquid sealing device |
| CN113108064B (en) * | 2021-04-29 | 2022-03-25 | 北京交通大学 | Modularized magnetic liquid sealing device |
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