CN103925372B - Brush type magnetic liquid sealing device - Google Patents
Brush type magnetic liquid sealing device Download PDFInfo
- Publication number
- CN103925372B CN103925372B CN201410185394.2A CN201410185394A CN103925372B CN 103925372 B CN103925372 B CN 103925372B CN 201410185394 A CN201410185394 A CN 201410185394A CN 103925372 B CN103925372 B CN 103925372B
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- China
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- pole shoe
- seal ring
- magnetic liquid
- permanent magnet
- shell
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Sealing Devices (AREA)
Abstract
The invention belongs to the field of mechanical engineering sealing, and discloses a brush type magnetic liquid sealing device solving the problems that an existing magnetic liquid rotating sealing device can only seal the liquid medium under the low-pressure and low-linear-speed environment, and certain leakage is probably caused under the high-pressure and high-linear-speed environment. The brush type magnetic liquid sealing device comprises an outer shell (1), a left pole shoe (2), a permanent magnet (4), a right pole shoe (5), an end cover (6), a long bristle bundle (9), a short bristle bundle (10) and the like. An inner circular groove of the left pole shoe and an inner circular groove of the right pole shoe are internally provided with the non-permeability long bristle bundle (9) and the permeability short bristle bundle (10) which are evenly mixed, the mixed bristle bundles are filled with magnetic fluid to form combined sealing of the magnetic fluid and brush sealing, and the liquid medium can be sealed under the high-pressure and high-revolving-speed environment.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.
Background technique
Magnetic fluid sealing technology due to its have zero leakage, without wearing and tearing, the life-span is long, advantages of simple structure and simple gradually use by increasing industry.Existing magnetic liquid rotating sealing device typical structure is if publication number is for CN102518811A and publication number are for as described in the patent application of CN202091519U.Existing magnetic liquid rotating sealing device can only at the environment lower seal liquid medium of low pressure, low linear velocity, certain leakage problem is had under the environment of high pressure, high linear speed, therefore application area has larger narrow limitation, especially, when aerospace field seals pH value liquid, there is certain potential safety hazard.
Summary of the invention
The technical issues that need to address of the present invention are, existing magnetic liquid rotating sealing device can only at the environment lower seal liquid medium of low pressure, low linear velocity, certain leakage problem is had under the environment of high pressure, high linear speed, therefore application area has larger narrow limitation, especially, when aerospace field seals pH value liquid, there is certain potential safety hazard.Therefore a kind of brush magnetic fluid seal device is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Brush magnetic fluid seal device, forms this device and comprises:
Shell, left pole shoe, left seal ring, permanent magnet, right pole shoe, end cap, screw, right seal ring, long brush hairs bundle, whisk broom pieces, magnetic liquid;
Connection between each several part forming this device:
Described left seal ring is arranged in the seal groove on left pole shoe cylindrical, and form the left pole shoe of band seal ring, right seal ring is arranged in the seal groove on right pole shoe cylindrical, forms the right pole shoe of band seal ring;
Described permanent magnet is arranged on the right side of the left pole shoe of band seal ring, the right pole shoe of described band seal ring is arranged on the right side of permanent magnet, the left side of permanent magnet and the right side of left pole shoe, between the right side of permanent magnet and the left side of right pole shoe by gluing connection, to immerse in magnetic liquid after long brush hairs bundle and whisk broom pieces Homogeneous phase mixing, make to fill magnetic liquid in bristle gap, the bristle row filling magnetic liquid is loaded in left and right pole shoe in round recessed, form black box;
Boss right side in the enclosure installed by described black box;
Described end cap is arranged on the right side of right pole shoe, end cap and shell to be fixed with being threaded on shell right side by screw, makes each part axial location of enclosure;
Left and right pole shoe inner circle is processed with the annular groove installing bristle row;
Long brush hairs Shu Caiyong non-magnet material, its length equals the monolateral gap of rotating shaft and pole shoe;
Whisk broom pieces adopts magnetic conductive material, and its length is less than the monolateral gap of rotating shaft and pole shoe;
Long brush hairs bundle and whisk broom pieces Homogeneous phase mixing, fill magnetic liquid in bristle row gap upon mixing;
The present invention compares had beneficial effect with prior art:
By the whisk broom pieces of the non-magnetic long brush hairs bundle after being provided with Homogeneous phase mixing in round recessed in left and right pole shoe and magnetic conductivity, magnetic liquid is filled in bristle row upon mixing, form the combination seal of magnetic liquid and brush seal, make use of brush seal can the advantage of effective sealing liquid and the advantage of magnetic fluid sealing zero leakage, achieves the sealing to liquid medium under high pressure, high-revolving environment.
Accompanying drawing explanation
The brush magnetic fluid seal device structural drawing of Fig. 1.
In Fig. 1: shell 1, left pole shoe 2, left seal ring 3, permanent magnet 4, right pole shoe 5, end cap 6, screw 7, right seal ring 8, long brush hairs bundle 9, whisk broom pieces 10, magnetic liquid 11.
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing:
Brush magnetic fluid seal device, as Fig. 1, sealing device comprises: shell 1, left pole shoe 2, left seal ring 3, permanent magnet 4, right pole shoe 5, end cap 6, screw 7, right seal ring 8, long brush hairs bundle 9, whisk broom pieces 10, magnetic liquid 11.
Connection between each several part forming this device:
Described left seal ring 3 is arranged in the seal groove on left pole shoe 2 cylindrical, and form the left pole shoe of band seal ring, right seal ring 8 is arranged in the seal groove on right pole shoe 5 cylindrical, forms the right pole shoe of band seal ring;
Described permanent magnet 4 is arranged on the right side of the left pole shoe of band seal ring, the right pole shoe of described band seal ring is arranged on the right side of permanent magnet 4, by gluing connection between the right side of the left side of permanent magnet 4 and the right side of left pole shoe 2, permanent magnet 4 and the left side of right pole shoe 5, to immerse in magnetic liquid after long brush hairs bundle 9 and whisk broom pieces 10 Homogeneous phase mixing, make to fill magnetic liquid 11 in bristle gap, the bristle row filling magnetic liquid 11 is loaded in left and right pole shoe in round recessed, form black box;
Described black box is arranged on the boss right side in shell 1;
Described end cap 6 is arranged on the right side of right pole shoe 5, end cap 6 and shell 1 to be fixed, make each part axial location of enclosure by screw 7 with being threaded on shell 1 right side;
Left and right pole shoe inner circle is processed with the annular groove installing bristle row;
Long brush hairs bundle 9 adopts non-magnet material, and its length equals the monolateral gap of rotating shaft and pole shoe;
Whisk broom pieces 10 adopts magnetic conductive material, and its length is less than the monolateral gap of rotating shaft and pole shoe;
Long brush hairs bundle 9 and whisk broom pieces 10 Homogeneous phase mixing, fill magnetic liquid 11 in bristle row gap upon mixing;
Shell 1, end cap 6 all select non-permeable material, as stainless steel or aluminium product;
The material that left pole shoe 2 and right pole shoe 5 select magnetic property good, as electrical pure iron;
Permanent magnet 4 selects rubidium iron boron;
The kind of magnetic liquid is according to the magnetic liquid of the different base fluid of the different choice of sealing medium.
Claims (1)
1. brush magnetic fluid seal device, this device comprises:
Shell (1), left pole shoe (2), left seal ring (3), permanent magnet (4), right pole shoe (5), end cap (6), screw (7), right seal ring (8), long brush hairs bundle (9), whisk broom pieces (10), magnetic liquid (11);
Connection between each several part forming this device:
Described left seal ring (3) is arranged in the seal groove on left pole shoe (2) cylindrical, form the left pole shoe of band seal ring, right seal ring (8) is arranged in the seal groove on right pole shoe (5) cylindrical, forms the right pole shoe of band seal ring;
Described permanent magnet (4) is arranged on the right side of the left pole shoe of band seal ring, the right pole shoe of described band seal ring is arranged on the right side of permanent magnet (4), the left side of permanent magnet (4) and the right side of left pole shoe (2), by gluing connection between the right side of permanent magnet (4) and the left side of right pole shoe (5), to immerse in magnetic liquid after long brush hairs bundle (9) and whisk broom pieces (10) Homogeneous phase mixing, make in bristle gap, to fill magnetic liquid (11), the bristle row that will fill magnetic liquid (11) loads left, in the interior round recessed of right pole shoe, form black box,
Described black box is arranged on the boss right side in shell (1);
Described end cap (6) is arranged on the right side of right pole shoe (5), by screw (7) and being threaded fixing to end cap (6) and shell (1) on shell (1) right side, make each part axial location of enclosure;
It is characterized in that:
Left and right pole shoe inner circle is processed with the annular groove installing bristle row;
Long brush hairs bundle (9) adopts non-magnet material, and its length equals the monolateral gap of rotating shaft and pole shoe;
Whisk broom pieces (10) adopts magnetic conductive material, and its length is less than the monolateral gap of rotating shaft and pole shoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185394.2A CN103925372B (en) | 2014-05-04 | 2014-05-04 | Brush type magnetic liquid sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410185394.2A CN103925372B (en) | 2014-05-04 | 2014-05-04 | Brush type magnetic liquid sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103925372A CN103925372A (en) | 2014-07-16 |
| CN103925372B true CN103925372B (en) | 2015-07-22 |
Family
ID=51143692
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410185394.2A Expired - Fee Related CN103925372B (en) | 2014-05-04 | 2014-05-04 | Brush type magnetic liquid sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103925372B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534100B (en) * | 2015-01-08 | 2015-10-28 | 北京交通大学 | Improve high linear speed and the new method in stationary magnetic hydraulic seal life-span |
| CN105202198B (en) * | 2015-09-18 | 2017-09-22 | 北京化工大学 | Flexible pole shoe device for sealing magnetic fluid |
| CN107939974B (en) * | 2017-11-28 | 2019-04-26 | 沈阳航空航天大学 | A kind of adjustable magnetic damping suppression is quivered brush seal structure |
| CN107906208B (en) * | 2017-12-13 | 2023-05-02 | 广西科技大学 | Convex arc type magnetic fluid sealing device |
| CN110081177A (en) * | 2019-05-06 | 2019-08-02 | 北京化工大学 | A kind of sealing device and bearing housing system |
| CN111503275A (en) * | 2020-04-30 | 2020-08-07 | 大连理工大学 | Tunnel boring machine main drive rubber-magnetic fluid coupling sealing device and mounting method |
| CN112431928B (en) * | 2020-11-25 | 2022-09-23 | 清华大学 | Magnetic liquid sealing device |
| CN113639046B (en) * | 2021-08-16 | 2022-04-12 | 清华大学 | Magnetic liquid sealing device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947566A (en) * | 1982-09-07 | 1984-03-17 | Ishikawajima Harima Heavy Ind Co Ltd | Shaft seal device employing magnetic fluid |
| CN102182830A (en) * | 2011-05-05 | 2011-09-14 | 北京交通大学 | Rotary sealing device for magnetic liquid |
| RU2451225C1 (en) * | 2011-05-19 | 2012-05-20 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" (ОАО "НПО "Сатурн") | Magnetic fluid shaft seal |
| CN103133700A (en) * | 2013-03-21 | 2013-06-05 | 北京交通大学 | Magnetic liquid rotating and sealing device |
| CN103148220A (en) * | 2013-03-27 | 2013-06-12 | 北京交通大学 | Magnetic liquid rotary sealing device |
| CN103759015A (en) * | 2014-01-17 | 2014-04-30 | 北京交通大学 | Micro-pump type upstream pumping magnetic-fluid sealing device |
-
2014
- 2014-05-04 CN CN201410185394.2A patent/CN103925372B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947566A (en) * | 1982-09-07 | 1984-03-17 | Ishikawajima Harima Heavy Ind Co Ltd | Shaft seal device employing magnetic fluid |
| CN102182830A (en) * | 2011-05-05 | 2011-09-14 | 北京交通大学 | Rotary sealing device for magnetic liquid |
| RU2451225C1 (en) * | 2011-05-19 | 2012-05-20 | Открытое акционерное общество "Научно-производственное объединение "Сатурн" (ОАО "НПО "Сатурн") | Magnetic fluid shaft seal |
| CN103133700A (en) * | 2013-03-21 | 2013-06-05 | 北京交通大学 | Magnetic liquid rotating and sealing device |
| CN103148220A (en) * | 2013-03-27 | 2013-06-12 | 北京交通大学 | Magnetic liquid rotary sealing device |
| CN103759015A (en) * | 2014-01-17 | 2014-04-30 | 北京交通大学 | Micro-pump type upstream pumping magnetic-fluid sealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103925372A (en) | 2014-07-16 |
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Granted publication date: 20150722 Termination date: 20200504 |