CN205877201U - Buffering formula device for sealing magnetic fluid - Google Patents
Buffering formula device for sealing magnetic fluid Download PDFInfo
- Publication number
- CN205877201U CN205877201U CN201620878568.8U CN201620878568U CN205877201U CN 205877201 U CN205877201 U CN 205877201U CN 201620878568 U CN201620878568 U CN 201620878568U CN 205877201 U CN205877201 U CN 205877201U
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- CN
- China
- Prior art keywords
- pole shoe
- hole
- shoe ring
- permanent magnet
- axle
- Prior art date
- 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.)
- Withdrawn - After Issue
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a mechanical engineering sealing technique field specifically indicates a buffering formula device for sealing magnetic fluid, including axle, shell, outer end terminal ring, gas bomb, interior end terminal ring, permanent magnet, a plurality of intervals of interior end terminal ring install in epaxial, clearance installation permanent magnet between the interior end terminal ring, in the radial direction of axle, the radial height of end terminal ring in the radial height of permanent magnet is less than, including the outside of the outer anchor ring of end terminal ring set up outer end terminal ring, have the clearance between the outer wall that inner wall that outer end terminal encircled and interior end terminal encircled, same through -hole I and the through -hole II of radially setting up who follows the axle on the outer end terminal ring sum shell respectively, outside the shell is located to the gas bomb, through hose and through -hole I and through -hole II sealing connection. The utility model discloses a sealing device seal pressure is high, and sealing performance is reliable.
Description
Technical field
This utility model relates to mechanical engineering technical field of sealing technology, refers specifically to the buffer-type magnetic fluid that a kind of voltage endurance capability is high
Sealing device.
Background technology
Magnet fluid sealing has the advantage such as zero leakage, nothing abrasion, life-span length, simple in construction, high reliability by extensively due to it
The general all trades and professions that are applied to, zero leakage performance therein other seal form especially are unapproachable.But, magnet fluid sealing is used
When high pressure operating mode, causing seal failure owing to the pressure reduction of magnetic fluid both sides is excessive is that device for sealing magnetic fluid is badly in need of asking of solution
Topic.The pressure of medium the most to be sealed is higher, if all resisting medium to be sealed by device for sealing magnetic fluid
Pressure is the highest to volume and the requirement of strength of device for sealing magnetic fluid, thus volume can be caused the biggest.Existing magnetic fluid is close
Seal apparatus arranges gas balance device in the outside of sealing device, carries out pressure regulation by the chamber of gas interior, to balance magnetic current
Body seals the pressure reduction of both sides, substantially increases the voltage endurance capability of device for sealing magnetic fluid.But prior art is at sealing device
Low-pressure side one chamber is set, the pressure regulation chamber that extraneous gas is passed through low-pressure side carrys out the magnetic fluid within balanced seal device
The pressure of both sides, this method needs to offer comb structure in pole shoe, permanent magnet or other sealing structures, makes the gas being filled with
Form pressure at labyrinth seal intracavity and remove the high-pressure medium gas of balanced seal, offer comb and be unfavorable for simplifying sealing structure, and
And in the case of there is multiple sealing ring between high-pressure side and low-pressure side, only one pressure regulation chamber is set in low-pressure side, it is difficult to
Ensure the air pressure balance of each sealing ring both sides, thus be unfavorable for improving the voltage endurance capability that sealing device is overall.Prior art is also
The solution existed is to arrange gas outlet and air inlet on sealing device, and air inlet is connected with the pressure regulation chamber of low-pressure side,
This method needs constantly to be filled with pressure regulation gas inside sealing device and carries out dynamic voltage adjustment, and the power consumption of this method is relatively big, no
It is beneficial to reduce equipment cost.
Summary of the invention
This utility model is for the defect of prior art, it is provided that a kind of energy consumption is low, simple in construction, the buffering that voltage endurance capability is high
Formula device for sealing magnetic fluid.
The technical solution of the utility model is as follows:
A kind of buffer-type device for sealing magnetic fluid, including axle, shell, outer pole shoe ring, gas bomb, interior pole shoe ring, permanent magnet,
Described axle is installed in shell, the cross section of shell and the cross section of axle concentric circular each other, and described outer pole shoe ring is arranged on
On the inwall of shell；Described interior pole shoe ring is provided with more than two, and spacer sleeve is loaded on axle, is positioned at the coverage of outer pole shoe ring
In, interior pole shoe ring extends along the inwall of the outside pole shoe ring of radial direction of axle, and leaves gap between the inwall of outer pole shoe ring；Phase
Being provided with permanent magnet in the adjacent space between two interior pole shoe ring, described permanent magnet is sleeved on axle, and the radial direction of permanent magnet is high
Degree is less than the radial height of interior pole shoe ring；
Respectively along same the through hole I and through hole II that is radially arranged, described through hole I of axle in described outer pole shoe ring and shell
Identical with through hole II size shape；Described through hole I is corresponding with permanent magnet with through hole II, quantity also with the quantity one of permanent magnet
Cause；
Described gas bomb is located at outside shell, is tightly connected with through hole I and through hole II by flexible pipe.
Described through hole I and through hole II is screwed hole；Described hose end is provided with external screw thread, it is possible to seals to screw in and leads to
In hole I and through hole II.
Every flexible pipe is respectively provided with an effusion meter and a check valve.
Sealing device described in the utility model also includes magnetism-isolating loop and bearing, is positioned at the left side of the pole shoe ring of the leftmost side
Installing magnetism-isolating loop and bearing successively, magnetism-isolating loop and bearing are installed, successively wherein every magnetic in the right side of the pole shoe ring being positioned at the rightmost side
The end of ring flushes with the end of outer pole shoe ring.
Described permanent magnet is axial charging type permanent magnet, and the adjacent magnetic line of force between two permanent magnets is in opposite direction.
The quantity of described interior pole shoe ring is 3-9.
Gap between outer wall and the inwall of outer pole shoe ring of described interior pole shoe ring is 0.1mm-5mm.
Operation principle of the present utility model is after determining on high-tension side gas pressure, is determined by calculating and is filled with two-by-two
The gas pressure of the chamber between pole shoe, is filled with the gas of relevant pressure, it is only necessary to be filled with one the most again to each pressure regulation chamber
Secondary.
The installation process of sealing device described in the utility model is as follows: interior pole shoe ring and permanent magnet are spaced installation successively
On axle, magnetism-isolating loop is installed in the left side of the interior pole shoe ring in the leftmost side, and magnetism-isolating loop is installed on the right side of the interior pole shoe ring in the rightmost side；
In the outside of the outer ring surface of interior pole shoe ring, outer pole shoe ring is installed, between making the inwall of outer pole shoe ring and the outer wall of interior pole shoe ring exist
Gap, and inwardly between pole shoe ring and outer pole shoe ring, in the gap of composition, inject magnetic fluid；The axle at two ends, pole shoe ring left and right outside
On be respectively mounted bearing；Axle is installed shell, makes jacket live in and state the part being installed on axle, each through hole II on shell
Position with in interior pole shoe ring the position of each through hole I coaxial, the inwall of shell left end is close to be positioned at the bearing in left side, shell
Right-hand member is attached by screw thread with end cap, and end cap compresses the outer ring of the bearing being positioned at right side；Form to through hole I and through hole II
Passage loads flexible pipe, and one end of flexible pipe passes through hole, and the other end is connected with gas bomb, through every flexible pipe of through hole outside being positioned at
The outer portion part of shell is respectively provided with an effusion meter and a check valve, after determining the on high-tension side gas pressure of sealing device, to
In the chamber of interior pole shoe ring composition, insufflation gas is with the pressure of equilibrium magnetism fluid both sides, the gas being filled be nitrogen or its
Its noble gas.
Sealing device described in the utility model, the principle sealed according to cushion gas, shell and outer pole shoe are arranged logical
Hole, through hole, corresponding to the interior chamber of composition between pole shoe ring and permanent magnet two-by-two, is balanced often by insufflation gas in chamber
The air pressure of the magnet fluid sealing ring both sides that individual interior pole shoe ring is corresponding, the pressure reduction making each magnet fluid sealing ring both sides is uniform, thus
Improve the voltage endurance capability that device for sealing magnetic fluid is overall, expand the range of safety operation of device for sealing magnetic fluid；This practicality is new
Type is after determining on high-tension side pressure, by calculating, it may be determined that the gas pressure of the chamber being filled with in each two between pole shoe ring
Power, gas bomb only need to be filled with a gas, energy-conservation of consumption reduction according to result of calculation to each chamber；This utility model due to
The low-pressure side of each interior pole shoe ring arranges chamber, can be controlled the pressure reduction of each sealing ring both sides, it is to avoid labyrinth seal is tied
Structure causes the problem that each sealing ring both sides pressure reduction is uneven, not only simplify the structure of sealing device, also improves sealing dress
The overall voltage endurance capability put.
Accompanying drawing explanation
Fig. 1 is the structural representation of sealing device described in the utility model
In figure, each sequence number indicates and the structure title of correspondence is as follows: 1-axle, 2-shell, the outer pole shoe ring of 3-, 4-check valve,
5-effusion meter, 6-gas bomb, 7-through hole II, 8-through hole I, 9-end cap, 10-bearing, pole shoe ring in 11-, 12-permanent magnet, 13-every
Magnet ring.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is further described.
Buffer-type device for sealing magnetic fluid as shown in Figure 1, including axle 1, shell 2, outer pole shoe ring 3, gas bomb 6, interior pole
Boots ring 11, permanent magnet 12, described axle 1 is installed in shell 2, the cross section of shell 2 and the cross section concentric circular each other of axle 1,
Described outer pole shoe ring 3 is arranged on the inwall of shell 2；Described interior pole shoe ring 11 is provided with more than two, and spacer sleeve is loaded on axle 1
On, it being positioned at the coverage of outer pole shoe ring 3, interior pole shoe ring 11 extends along the inwall of the outside pole shoe ring of radial direction 3 of axle 1,
And leave gap between the inwall of outer pole shoe ring 3；It is provided with permanent magnet 12, institute in the adjacent space between two interior pole shoe ring 11
The permanent magnet 12 stated is sleeved on axle 1, and the radial height of permanent magnet 12 is less than the radial height of interior pole shoe ring 11；
Respectively along the same through hole I8 and through hole II7 that is radially arranged of axle 1 in described outer pole shoe ring 3 and shell 2, described
Through hole I8 is identical with through hole II7 size shape；Described through hole I8 and through hole II7 is corresponding with permanent magnet 12, and quantity is also with forever
The quantity of magnet 12 is consistent；
Described gas bomb 6 is located at outside shell 2, is tightly connected with through hole I8 and through hole II7 by flexible pipe.
Described through hole I8 and through hole II7 is screwed hole；Described hose end is provided with external screw thread, it is possible to seals and screws in
In through hole I8 and through hole II7.
Every flexible pipe is respectively provided with an effusion meter 5 and a check valve 4.
Sealing device described in the utility model also includes magnetism-isolating loop 13 and bearing 10, is positioned at the pole shoe ring 11 of the leftmost side
Left side magnetism-isolating loop 13 and bearing 10 are installed successively, magnetism-isolating loop 13 He is installed on the right side of the pole shoe ring 11 being positioned at the rightmost side successively
Bearing 10, wherein the end of magnetism-isolating loop 13 flushes with the end of outer pole shoe ring 3.
Described permanent magnet 12 is axial charging type permanent magnet, the adjacent magnetic line of force direction phase between two permanent magnets 12
Instead.
The quantity of described interior pole shoe ring 11 is 3-9.
Gap between outer wall and the inwall of outer pole shoe ring 3 of described interior pole shoe ring 11 is 0.1mm-5mm.
The installation process of sealing device described in the utility model is as follows: interior pole shoe ring 11 and permanent magnet 12 are spaced successively
Being arranged on axle 1, magnetism-isolating loop 13 is installed in the left side of the interior pole shoe ring 11 in the leftmost side, on the right side of the interior pole shoe ring 11 of the rightmost side
Magnetism-isolating loop 13 is installed；In the outside of the outer ring surface of interior pole shoe ring 11, outer pole shoe ring 3 is installed, makes the inwall of outer pole shoe ring 3 and interior pole
There is gap in the outer wall of boots ring 11, and inwardly injects magnetic fluid between pole shoe ring 11 and outer pole shoe ring 3 in the gap of composition；?
It is respectively mounted bearing 10 on the axle 1 at outer pole shoe ring about 3 two ends；Axle 1 is installed shell 2, makes shell 2 cover above-mentioned being installed on
Part on axle 1, on shell 2, the position of each through hole II7 is coaxial with the position of each through hole I8 in interior pole shoe ring 11, shell 2
The inwall of left end is close to be positioned at the bearing 10 in left side, and the right-hand member of shell 2 is attached by screw thread with end cap 9, and end cap 9 compresses position
Outer ring in the bearing 10 on right side；The passage formed to through hole I8 and through hole II7 loads flexible pipe, and one end of flexible pipe passes through hole,
The other end is connected with gas bomb 6, and the every flexible pipe through through hole is respectively provided with an effusion meter 5 and at the outer portion part being positioned at shell
Individual check valve 4, after determining the on high-tension side gas pressure of sealing device, is filled with in the chamber of pole shoe ring 11 composition in two-by-two
Gas is with the pressure of equilibrium magnetism fluid both sides, and the gas being filled with is nitrogen or other noble gas.
Claims (7)
1. a buffer-type device for sealing magnetic fluid, including axle (1), shell (2), outer pole shoe ring (3), gas bomb (6), interior pole shoe
Ring (11), permanent magnet (12), described axle (1) is installed in shell (2), and the cross section of shell (2) and the cross section of axle (1) are mutual
For concentric circular, it is characterised in that:
Described outer pole shoe ring (3) is arranged on the inwall of shell (2)；Described interior pole shoe ring (11) is provided with more than two,
Spacer is loaded on axle (1), is positioned at the coverage of outer pole shoe ring (3), and interior pole shoe ring (11) is outside along the radial direction of axle (1)
The inwall of pole shoe ring (3) extends, and leaves gap between the inwall of outer pole shoe ring (3)；Two adjacent interior pole shoe ring (11) it
Between space in be provided with permanent magnet (12), described permanent magnet (12) is sleeved on axle (1), and the radial height of permanent magnet (12) is little
Radial height in interior pole shoe ring (11)；
It is radially arranged through hole I(8 along the same of axle (1) respectively in described outer pole shoe ring (3) and shell (2)) and through hole II(7),
Described through hole I(8) with through hole II(7) size shape is identical；Described through hole I(8) and through hole II(7) with permanent magnet (12) phase
Correspondence, quantity is also consistent with the quantity of permanent magnet (12)；
Described gas bomb (6) is located at outside shell (2), by flexible pipe and through hole I(8) and through hole II(7) be tightly connected.
2. buffer-type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: described through hole I(8) and through hole II
(7) it is screwed hole；Described hose end is provided with external screw thread, it is possible to seals and screws in through hole I(8) and through hole II(7) in.
3. buffer-type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: on every flexible pipe, it is respectively provided with one
Individual effusion meter (5) and a check valve (4).
4. buffer-type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: also include magnetism-isolating loop (13) and bearing
(10), the left side of the pole shoe ring (11) being positioned at the leftmost side installs magnetism-isolating loop (13) and bearing (10) successively, is positioned at the rightmost side
The right side of interior pole shoe ring (11) installs magnetism-isolating loop (13) and bearing (10), the wherein end of magnetism-isolating loop (13) and outer pole shoe ring successively
(3) end flushes.
5. buffer-type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: described permanent magnet (12) is axial
The type that magnetizes permanent magnet, the adjacent magnetic line of force between two permanent magnets (12) is in opposite direction.
6. buffer-type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: the number of described interior pole shoe ring (11)
Amount is 3-9.
7. buffer-type device for sealing magnetic fluid as claimed in claim 1, it is characterised in that: outside described interior pole shoe ring (11)
Gap between the inwall of wall and outer pole shoe ring (3) is 0.1mm-5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878568.8U CN205877201U (en) | 2016-08-15 | 2016-08-15 | Buffering formula device for sealing magnetic fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620878568.8U CN205877201U (en) | 2016-08-15 | 2016-08-15 | Buffering formula device for sealing magnetic fluid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205877201U true CN205877201U (en) | 2017-01-11 |
Family
ID=57703247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620878568.8U Withdrawn - After Issue CN205877201U (en) | 2016-08-15 | 2016-08-15 | Buffering formula device for sealing magnetic fluid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205877201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090237A (en) * | 2016-08-15 | 2016-11-09 | 广西科技大学 | A kind of buffer-type device for sealing magnetic fluid |
-
2016
- 2016-08-15 CN CN201620878568.8U patent/CN205877201U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090237A (en) * | 2016-08-15 | 2016-11-09 | 广西科技大学 | A kind of buffer-type device for sealing magnetic fluid |
| CN106090237B (en) * | 2016-08-15 | 2018-03-27 | 广西科技大学 | A kind of buffer-type device for sealing magnetic fluid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170111 Effective date of abandoning: 20180327 |
|
| AV01 | Patent right actively abandoned |