CN105134964A - Multi-channel rotary gas delivery device for sealing magnetic liquid - Google Patents
Multi-channel rotary gas delivery device for sealing magnetic liquid Download PDFInfo
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- CN105134964A CN105134964A CN201510568518.XA CN201510568518A CN105134964A CN 105134964 A CN105134964 A CN 105134964A CN 201510568518 A CN201510568518 A CN 201510568518A CN 105134964 A CN105134964 A CN 105134964A
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Abstract
The invention discloses a multi-channel rotary gas delivery device for sealing magnetic liquid, and belongs to the field of mechanical engineering sealing. The problem that an existing multi-channel gas delivery device cannot deliver gas under the condition that relative movement exists at a gas inlet and a gas outlet is solved successfully. Gas passes through a first gas inlet channel (6), a second gas inlet channel (4) and an N<th> gas inlet channel (3) and then enters the multi-channel rotary gas delivery device for sealing magnetic liquid, and the gas is exhausted from a corresponding first gas outlet channel (21), a second gas outlet channel (22) and an N<th> gas outlet channel (23). The multi-channel rotary gas delivery device for sealing magnetic liquid solves the sealing problem of gas between all the channels when relative movement exists at the gas inlet and the gas outlet.
Description
Technical field
The invention belongs to sealing field of mechanical engineering.Be applicable under gas inlet and outlet has relative movement situation, the transmission of multi-channel gas.
Background technique
Magnetic fluid sealing technology owing to having zero leakage, without wearing and tearing, life-span long, easy to maintenance, advantages of simple structure and simple gradually use by increasing industry.Existing multichannel air delivery device can only carry gas when gas inlet and outlet does not have relative movement, and when gas inlet and outlet has relative movement, there is no good solution for the gas seal problem between each passage.
Summary of the invention
The technical issues that need to address of the present invention are, existing multichannel air delivery device can only carry gas when gas inlet and outlet does not have relative movement, and can not, when gas inlet and outlet has relative movement, guarantee to carry gas in leak free situation between each passage.Therefore a kind of multipassage rotary air delivery device of magnetic fluid sealing is provided.
The technical solution adopted for the present invention to solve the technical problems is:
The multipassage rotary air delivery device of magnetic fluid sealing, this device comprises right bearing, N-1 screw, N intake duct, second intake duct, inlet hole, first intake duct, first rubber seal, first screw, second rubber seal, first magnetic conductive disk, N rubber seal, screw, shell, regulate pad, magnetic shield, N annular permanent magnet, second magnetism shielding hood, second annular permanent magnet, first magnetism shielding hood, first annular permanent magnet, first air outlet channel, second air outlet channel, N air outlet channel, N-1 magnetism shielding hood, second magnetic conductive disk, left bearing, screw.
The first described rubber seal is arranged in the groove of the first annular permanent magnet end, form the first annular permanent magnet of band rubber seal, second rubber seal is arranged in the groove of the second annular permanent magnet end face, form the second annular permanent magnet of band rubber seal, be arranged in the groove of N annular permanent magnet end face to N rubber seal by that analogy, form the N annular permanent magnet of band rubber seal;
Right bearing and left bearing are arranged on respectively two end faces of magnetic shield annular boss, form the magnetic shield of band bearing; The magnetic shield of band bearing is loaded in the endoporus of shell; Continue and the N annular permanent magnet of band rubber seal is loaded in the endoporus of magnetic shield; Continue in the endoporus of the N annular permanent magnet of N-1 magnetism shielding hood tape loaded rubber seal; By that analogy, continue and will the second annular permanent magnet of rubber seal is with to load in the endoporus of the second magnetism shielding hood; Continue in the endoporus of the second annular permanent magnet of the first magnetism shielding hood tape loaded rubber seal; Continue and the first annular permanent magnet of band rubber seal is loaded in the endoporus of the first magnetism shielding hood; By the first screw, the first magnetism shielding hood is connected with the first magnetic conductive disk; By that analogy, by N-1 screw, N-1 magnetism shielding hood is connected with the first magnetic conductive disk; Magnetic shield and the first magnetic conductive disk fixed with being threaded on magnetic shield by screw; Appropriate magnetic liquid is noted at the first annular permanent magnet, the second annular permanent magnet until the left side of N annular permanent magnet; By the left side regulating pad to be arranged on left bearing; Second magnetic conductive disk is arranged on the left side of shell; By being threaded of screw and shell shell and the second magnetic conductive disk fixed, each part axial is located; By welding by the first intake duct left end, the second intake duct left end, be connected with the suction port of the first magnetic conductive disk to N intake duct left end by that analogy; By welding by the second intake duct lower end, be connected to N intake duct lower end with the first intake duct upper end by that analogy; By welding by the first air outlet channel, the second air outlet channel, be connected to the air outlet of N air outlet channel with the second magnetic conductive disk by that analogy.
Described first intake duct is processed with N number of through hole, forms N number of inlet hole, and on its excircle, N-1 inlet hole is corresponding with N-1 intake duct connects, and Placement can adopt welding or the mode such as to be threaded.
The first described magnetic conductive disk is processed with N number of through hole, forms N number of suction port, and N number of suction port is corresponding with N number of intake duct respectively to be connected, and Placement can adopt modes such as welding or be threaded.
The second described magnetic conductive disk is processed with N number of through hole, forms N number of air outlet, and N number of air outlet is corresponding with N number of air outlet channel respectively to be connected, and Placement can adopt modes such as welding or be threaded.
The second described magnetic conductive disk right side is processed with N number of boss, forms N number of annular pole shoe, each pole shoe is processed with pole tooth and teeth groove, the pole tooth number of each pole shoe is 2 ~ 10, pole facewidth degree is greater than 0.3mm, and space width is greater than 0.5mm, can choose according to concrete sealing situation.
Described magnetism shielding hood cross section is " recessed " font, and right side is processed with tapped hole and a vent, and vent position is identical with the lead to the hole site on the first magnetic conductive disk respectively.The excircle of each magnetism shielding hood left side is all processed with boss, for the left side of fixed permanent magnet.
Described intake duct and air outlet channel quantity should not too much, and N can choose in 2 ~ 6 scopes.Along with intake duct and air outlet channel quantity increase, radial area increases thereupon, and centrifugal force will increase, and therefore intake duct and air outlet channel quantity should not be too much.
The left side of the first described annular permanent magnet is N (S) pole, and right side is S (N) pole; Second annular permanent magnet left side is S (N) pole, right side is N (S) pole, be N (S) pole to N annular permanent magnet left side by that analogy, right side is S (N) pole, therefore can ensure that magnetic circuit forms closed loop.
Inject magnetic liquid in gap between the left side of described annular permanent magnet and the pole tooth of the second magnetic conductive disk, form radial seal, this interstice coverage is 0.001 ~ 1mm, compares traditional magnetic fluid tight manner, and below 0.01mm can be accomplished completely in its gap.
It is as follows that the present invention and prior art compare had beneficial effect: (1) is injected magnetic liquid by the gap between annular permanent magnet and the first magnetic conductive disk and sealed, solve gas inlet and outlet when having a relative movement, between each passage, gas cannot the problem of effective sealing; (2) magnetic fluid sealing to the rotation of Intake shaft without any interference effect; (3) owing to adopting end face seal mode, the pole shoe on the second magnetic conductive disk and the seal clearance between annular permanent magnet can be far smaller than the seal clearance of existing magnetic fluid seal device, even can reach micron level; (4) owing to adopting end face seal mode, avoid pole tooth in installation process and to collide the problem damaged; (5) adopt this end face seal mode, magnetic liquid is injected very convenient, the dismounting of component is also very easy to.
Accompanying drawing explanation
The multipassage rotary air delivery device structural drawing of Fig. 1 magnetic fluid sealing.
2 passages of Fig. 2 magnetic fluid sealing rotate air delivery device structural drawing.
In Fig. 1: right bearing 1, N-1 screw 2, N intake duct 3, second intake duct 4, inlet hole 5, first intake duct 6, first rubber seal 7, first screw 8, second rubber seal 9, first magnetic conductive disk 10, N rubber seal 11, screw 12, shell 13, regulate pad 14, magnetic shield 15, N annular permanent magnet 16, second magnetism shielding hood 17, second annular permanent magnet 18, first magnetism shielding hood 19, first annular permanent magnet 20, first air outlet channel 21, second air outlet channel 22, N air outlet channel 23, N-1 magnetism shielding hood 24, second magnetic conductive disk 25, left bearing 26, screw 27.
Embodiment
Be that the invention will be further described for embodiment with accompanying drawing:
The multipassage rotary air delivery device of magnetic fluid sealing, as Fig. 1, form this device to comprise: right bearing 1, N-1 screw 2, N intake duct 3, second intake duct 4, inlet hole 5, first intake duct 6, first rubber seal 7, first screw 8, second rubber seal 9, first magnetic conductive disk 10, N rubber seal 11, screw 12, shell 13, regulate pad 14, magnetic shield 15, N annular permanent magnet 16, second magnetism shielding hood 17, second annular permanent magnet 18, first magnetism shielding hood 19, first annular permanent magnet 20, first air outlet channel 21, second air outlet channel 22, N air outlet channel 23, N-1 magnetism shielding hood 24, second magnetic conductive disk 25, left bearing 26, screw 27,
Connection between each several part forming this device:
The first described rubber seal 7 is arranged in the groove of the first annular permanent magnet 20 end face, form the first annular permanent magnet of band rubber seal, second rubber seal 9 is arranged in the groove of the second annular permanent magnet 18 end face, form the second annular permanent magnet of band rubber seal, be arranged in the groove of N annular permanent magnet 16 end face to N rubber seal by that analogy, form the N annular permanent magnet of band rubber seal;
Right bearing 1 and left bearing 26 are arranged on respectively two end faces of magnetic shield 15 annular boss, form the magnetic shield of band bearing; The magnetic shield of band bearing is loaded in the endoporus of shell 13; Continue and the N annular permanent magnet of band rubber seal is loaded in the endoporus of magnetic shield 15; Continue in the endoporus of the N annular permanent magnet of N-1 magnetism shielding hood 24 tape loaded rubber seal; By that analogy, continue and will the second annular permanent magnet of rubber seal is with to load in the endoporus of the second magnetism shielding hood 17; Continue in the endoporus of the second annular permanent magnet of the first magnetism shielding hood 19 tape loaded rubber seal; Continue and the first annular permanent magnet of band rubber seal is loaded in the endoporus of the first magnetism shielding hood 19; By the first screw 8, first magnetism shielding hood 19 is connected with the first magnetic conductive disk 10; By that analogy, by N-1 screw 2, N-1 magnetism shielding hood 24 is connected with the first magnetic conductive disk 10; Magnetic shield 15 and the first magnetic conductive disk 10 fixed with being threaded on magnetic shield 15 by screw 12; Appropriate magnetic liquid is noted at the first annular permanent magnet 20, second annular permanent magnet 18 until the left side of N annular permanent magnet 16; By the left side regulating pad 14 to be arranged on left bearing 26; Second magnetic conductive disk 25 is arranged on the left side of shell 13; By being threaded of screw 27 and shell 13 shell 13 and the second magnetic conductive disk 25 fixed, each part axial is located; By welding by the first intake duct 6 left end, the second intake duct 4 left end, be connected to the suction port of N intake duct 3 left end with the first magnetic conductive disk 10 by that analogy; By welding by the second intake duct 4 lower end, be connected to N intake duct 3 lower end with the first intake duct 6 upper end by that analogy; By welding by the first air outlet channel 21, second air outlet channel 22, be connected to the air outlet of N air outlet channel 23 with the second magnetic conductive disk 25 by that analogy.
Described first intake duct 6 is processed with N number of through hole, forms N number of inlet hole, and on its excircle, N-1 inlet hole is corresponding with N-1 intake duct connects, and Placement can adopt welding or the mode such as to be threaded;
The first described magnetic conductive disk 10 is processed with N number of through hole, forms N number of suction port, and the N number of suction port is corresponding with N number of intake duct connects, and Placement can adopt welding or the mode such as to be threaded;
The second described magnetic conductive disk 25 is processed with N number of through hole, forms N number of air outlet, and the N number of air outlet is corresponding with N number of air outlet channel connects, and Placement can adopt welding or the mode such as to be threaded;
The second described magnetic conductive disk 25 right side is processed with N number of boss, forms N number of annular pole shoe, each pole shoe is processed with pole tooth and teeth groove, and the pole tooth number of each pole shoe is 2 ~ 10;
Described magnetism shielding hood cross section is " recessed " font, and right side is processed with tapped hole and a vent;
Described intake duct and air outlet channel quantity should not too much, and N can choose in 2 ~ 6 scopes;
The left side of the first described annular permanent magnet 20 is N (S) pole, and right side is S (N) pole; Second annular permanent magnet 18 left side is S (N) pole, and right side is N (S) pole, and be N (S) pole to N annular permanent magnet 16 left side by that analogy, right side is S (N) pole;
Magnetic liquid is injected in gap between the right side of described annular permanent magnet and the pole tooth of the second magnetic conductive disk 25, form radial seal, solve gas inlet and outlet when having a relative movement, the sealing problem of gas between each passage, and magnetic fluid sealing to the rotation of the first intake duct 6 without any interference effect.
Second intake duct 4 is until N intake duct 3, first air outlet channel 21, second air outlet channel 22 is until N air outlet channel 23, first screw 8 is until N-1 screw 2, first magnetism shielding hood 19, second magnetism shielding hood 17 is until N-1 magnetism shielding hood 24, first intake duct 6, screw 12, shell 13, regulate pad 14, magnetic shield 15 all to adopt nonmagnetic substance such as stainless steel to make.
The material that first magnetic conductive disk 10 and the second magnetic conductive disk 25 adopt magnetic property good is as electrical pure iron.
First annular permanent magnet 20 and the second annular permanent magnet 18 are until N annular permanent magnet 16 selects rubidium iron boron.
Left and right bearing can select the bearing of different model according to axially loaded size, as deep groove ball bearing or angular contact ball bearing etc.
The kind of magnetic liquid is according to the magnetic liquid of sealing gas base load liquid different from the different choice of ambient temperature, general select fluorocarbons based magnetic liquid or Polydimethylsiloxane--based Ferrofluids or two lipid based magnetic liquids when vacuum seal, under low temperature condition, select Polydimethylsiloxane--based Ferrofluids.
Claims (5)
1. the multipassage rotary air delivery device of magnetic fluid sealing, it is characterized in that: this device comprises: right bearing (1), N-1 screw (2), N intake duct (3), second intake duct (4), inlet hole (5), first intake duct (6), first rubber seal (7), first screw (8), second rubber seal (9), first magnetic conductive disk (10), N rubber seal (11), screw (12), shell (13), regulate pad (14), magnetic shield (15), N annular permanent magnet (16), second magnetism shielding hood (17), second annular permanent magnet (18), first magnetism shielding hood (19), first annular permanent magnet (20), first air outlet channel (21), second air outlet channel (22), N air outlet channel (23), N-1 magnetism shielding hood (24), second magnetic conductive disk (25), left bearing (26) and screw (27), described the first rubber seal (7) is arranged in the groove of the first annular permanent magnet (20) end face, form the first annular permanent magnet of band rubber seal, second rubber seal (9) is arranged in the groove of the second annular permanent magnet (18) end face, form the second annular permanent magnet of band rubber seal, be arranged on to N rubber seal by that analogy in the groove of N annular permanent magnet (16) end face, form the N annular permanent magnet of band rubber seal, right bearing (1) and left bearing (26) are arranged on respectively two end faces of magnetic shield (15) annular boss, form the magnetic shield of band bearing, the magnetic shield of band bearing is loaded in the endoporus of shell (13), continue and the N annular permanent magnet of band rubber seal is loaded in the endoporus of magnetic shield (15), continue in the endoporus of the N annular permanent magnet of N-1 magnetism shielding hood (24) tape loaded rubber seal, by that analogy, continue and will the second annular permanent magnet of rubber seal is with to load in the endoporus of the second magnetism shielding hood (17), continue in the endoporus of the second annular permanent magnet of the first magnetism shielding hood (19) tape loaded rubber seal, continue and the first annular permanent magnet of band rubber seal is loaded in the endoporus of the first magnetism shielding hood (19), by the first screw (8), the first magnetism shielding hood (19) is connected with the first magnetic conductive disk (10), by that analogy, by N-1 screw (2), N-1 magnetism shielding hood (24) is connected with the first magnetic conductive disk (10), magnetic shield (15) and the first magnetic conductive disk (10) fixed with being threaded on magnetic shield (15) by screw (12), appropriate magnetic liquid is noted at the first annular permanent magnet (20), the second annular permanent magnet (18) until the left side of N annular permanent magnet (16), pad (14) will be regulated to be arranged on the left side of left bearing (26), second magnetic conductive disk (25) is arranged on the left side of shell (13), by being threaded of screw (27) and shell (13) shell (13) and the second magnetic conductive disk (25) fixed, each part axial is located, by welding by the first intake duct (6) left end, the second intake duct (4) left end, be connected to the suction port of N intake duct (3) left end with the first magnetic conductive disk (10) by that analogy, by welding by the second intake duct (4) lower end, be connected to N intake duct (3) lower end with the first intake duct (6) upper end by that analogy, by welding by the first air outlet channel (21), the second air outlet channel (22), be connected to the air outlet of N air outlet channel (23) with the second magnetic conductive disk (25) by that analogy.
2. the multipassage rotary air delivery device of magnetic fluid sealing according to claim 1, is characterized in that:
Described first intake duct (6) is processed with N number of hole, thus forms N number of inlet hole, and on its excircle, N-1 inlet hole is corresponding with N-1 intake duct connects, and Placement is for being fixedly connected with;
Described intake duct and air outlet channel quantity should not too much, and N can choose in 2 ~ 6 scopes.
3. the multipassage rotary air delivery device of magnetic fluid sealing according to claim 1 and 2, is characterized in that:
Described the first magnetic conductive disk (10) is disc-shaped structure, is processed with N number of through hole, forms N number of suction port, and N number of suction port is corresponding with N number of intake duct respectively to be connected, and Placement is for being fixedly connected with, and its material is magnetic conductive material;
Described the second magnetic conductive disk (25) is disc-shaped structure, is processed with N number of through hole, forms N number of air outlet, and N number of air outlet is corresponding with N number of air outlet channel respectively to be connected, and Placement is for being fixedly connected with, and its material is magnetic conductive material;
Described the second magnetic conductive disk (25) right side is processed with N number of boss, forms N number of annular pole shoe, and each annular pole shoe is processed with pole tooth and teeth groove, and the pole tooth number of each pole shoe is 2 ~ 10.
4. the multipassage rotary air delivery device of magnetic fluid sealing according to claim 1, is characterized in that:
Described the first magnetism shielding hood (19), the second magnetism shielding hood (17) are all identical to N-1 magnetism shielding hood (24) structure, are loop configuration, and its cross section is " recessed " font, and its material is non-permeable material; The right side of each magnetism shielding hood is processed with tapped hole and a vent, and vent position is identical with the lead to the hole site on the first magnetic conductive disk (10) respectively; The excircle of each magnetism shielding hood left end is all processed with boss, for the left side of fixed permanent magnet.
5. the multipassage rotary air delivery device of magnetic fluid sealing according to claim 1, is characterized in that:
Described first to N annular permanent magnet, and wherein adjacent permanent magnet magnetizing direction is contrary, and namely the left side of the first annular permanent magnet (20) is N pole, and right side is S pole; Second annular permanent magnet (18) left side is S pole, right side is N pole, be N pole to N annular permanent magnet (16) left side by that analogy, right side is S pole, thus by forming closed magnetic circuit between the first magnetic conductive disk (10) and the second magnetic conductive disk (25);
Inject magnetic liquid in gap between described first to the left side and the pole tooth of the second magnetic conductive disk (25) of N annular permanent magnet, form radial seal, this interstice coverage is 0.001 ~ 1mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510568518.XA CN105134964B (en) | 2015-09-09 | 2015-09-09 | The multipassage rotary air delivery device of magnetic fluid sealing |
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| CN201510568518.XA CN105134964B (en) | 2015-09-09 | 2015-09-09 | The multipassage rotary air delivery device of magnetic fluid sealing |
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| CN105134964A true CN105134964A (en) | 2015-12-09 |
| CN105134964B CN105134964B (en) | 2017-04-05 |
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| CN201510568518.XA Expired - Fee Related CN105134964B (en) | 2015-09-09 | 2015-09-09 | The multipassage rotary air delivery device of magnetic fluid sealing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704643A (en) * | 2022-03-18 | 2022-07-05 | 北京科技大学 | High-rotation-speed magnetic liquid sealing structure and sealing ring surface air pressure adjusting method |
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| EP0018791B1 (en) * | 1979-04-26 | 1983-08-31 | Ferrofluidics Corporation | Magnetic seal apparatus for magnetically permeable shaft |
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| JPH01220776A (en) * | 1988-02-25 | 1989-09-04 | Nok Corp | Magnetic fluid sealing device |
| JPH04321881A (en) * | 1991-04-23 | 1992-11-11 | Tokin Corp | Magnetic seal rotation introducing machine |
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| CN103174771A (en) * | 2012-07-31 | 2013-06-26 | 中国矿业大学 | Multi-disc type magnetorheological fluid clutch |
| CN103244689A (en) * | 2013-05-17 | 2013-08-14 | 北京交通大学 | Magnetic liquid sealing device used for multi-channel gas delivery between rotating system and static system |
| CN203796967U (en) * | 2014-04-17 | 2014-08-27 | 埃慕迪磁电科技(上海)有限公司 | Multi-gas passage structure for magnetic fluid sealing device |
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2015
- 2015-09-09 CN CN201510568518.XA patent/CN105134964B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0018791B1 (en) * | 1979-04-26 | 1983-08-31 | Ferrofluidics Corporation | Magnetic seal apparatus for magnetically permeable shaft |
| JPS5950275A (en) * | 1982-09-16 | 1984-03-23 | Rigaku Keisoku Kk | Shaft sealing apparatus utilizing magnetic fluid |
| JPH01220776A (en) * | 1988-02-25 | 1989-09-04 | Nok Corp | Magnetic fluid sealing device |
| JPH04321881A (en) * | 1991-04-23 | 1992-11-11 | Tokin Corp | Magnetic seal rotation introducing machine |
| CN102720841A (en) * | 2011-12-20 | 2012-10-10 | 北京交通大学 | Large-diameter magnetic liquid rotating seal assembly method |
| CN102562874A (en) * | 2012-01-20 | 2012-07-11 | 中国矿业大学 | Double-disc-type extrusion magneto-rheological brake |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704643A (en) * | 2022-03-18 | 2022-07-05 | 北京科技大学 | High-rotation-speed magnetic liquid sealing structure and sealing ring surface air pressure adjusting method |
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Granted publication date: 20170405 Termination date: 20200909 |