CN103234048B - A kind of magnetic liquid dust-proof sealing device for wind sensor - Google Patents
A kind of magnetic liquid dust-proof sealing device for wind sensor Download PDFInfo
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- CN103234048B CN103234048B CN201310125420.8A CN201310125420A CN103234048B CN 103234048 B CN103234048 B CN 103234048B CN 201310125420 A CN201310125420 A CN 201310125420A CN 103234048 B CN103234048 B CN 103234048B
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- pole shoe
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Abstract
The invention discloses a kind of magnetic liquid dust-proof sealing device for wind sensor, solve the dust-proof problem in gap between wind sensor central shaft and central axle sleeve.This device comprises: central shaft (1), the right pole shoe of annular (2), annular permanent magnet (3), the left pole shoe of annular (4) forms magnetic liquid sealing structure, in the gap formed with central shaft (1) and the left pole shoe of annular (4) in the gap that magnetic liquid (5) injection central shaft (1) and the right pole shoe of annular (2) are formed, the magnetic field that described magnetic liquid (5) produces due to annular permanent magnet (3), be adsorbed in gap that central shaft (1) and the right pole shoe of annular (2) formed and in gap that central shaft (1) and the left pole shoe of annular (4) are formed, prevent introduced contaminants from entering central shaft (1) with in the gap of central axle sleeve (6), reach the object of dust sealing.<!--1-->
Description
Technical field
The present invention relates to a kind of magnetic liquid dust-proof sealing device for wind sensor, belong to sealing field of mechanical engineering.
Background technique
This wind sensor is arranged in the air channel of blower, when blower normally works, can cool, thus make radar normal operation to certain military project radar.Wind sensor judges by wind flag angle of swing the wind-force that blower blows out, and then judge that whether blower is working properly, when the impurity such as dust enter in the gap between the central shaft of wind sensor and central axle sleeve, central shaft can be hindered to rotate freely, cause wind flag angle of swing to judge inaccurate, also just can not judge whether blower normally works.Therefore the dust sealing of wind sensor is most important.Magnetic fluid sealing is a kind of novel sealing means, its topmost feature is its sealability and does not rely on the pressuring action of seal surface, deposit in the case of a relative movement between sealing surface, there is frictional force hardly, and magnetic liquid cognition is full of whole seal clearance under the action of a magnetic force, has and can ensure hermetic feature.Magnetic liquid dust sealing, as one of magnetic fluid sealing application direction, has vast potential for future development.
Summary of the invention
Technical problem to be solved by this invention is the dust-proof problem in gap between wind sensor central shaft and central axle sleeve.
The present invention solves scheme that its technical problem adopts:
For a magnetic liquid dust-proof sealing device for wind sensor, it is characterized in that:
Central shaft, annular right pole shoe, annular permanent magnet, annular left pole shoe, magnetic liquid, central axle sleeve, shell, swing magnetic post, magnetic core, magnetic pole screw, Feng Qi, positioning screwn one, positioning screwn two;
Connection between above-mentioned part:
Right for the annular external diameter of pole shoe is alignd with the external diameter of annular permanent magnet, and by the lower surface of right for annular pole shoe and the upper surface sealer of annular permanent magnet bonding, left for the annular external diameter of pole shoe is alignd with the external diameter of annular permanent magnet, and by bonding for the upper surface sealer of left to the lower surface of annular permanent magnet and annular pole shoe, form sealing configuration overall; Central axle sleeve loads in shell, and welds in bottom, loads in shell, the top of central axle sleeve by the sealing configuration entirety formed; Being utilized by magnetic pole screw is threaded onto on shell; Two positioning screwns are contained on shell; Being loaded by magnetic core swings in magnetic post; By the welding of wind flag on center shaft, central shaft is loaded in sealing configuration entirety, central axle sleeve and swing magnetic post, fix with Cock screw; Magnetic liquid is injected respectively in gap that central shaft and the right pole shoe of annular formed and in gap that central shaft and the left pole shoe of annular are formed.
The magnetic field that described magnetic liquid produces due to annular permanent magnet, be adsorbed in gap that central shaft and the right pole shoe of annular formed and in gap that central shaft and the left pole shoe of annular are formed, prevent introduced contaminants from entering the gap of central shaft and central axle sleeve, reach the object of dust sealing.
The present invention compares had beneficial effect with prior art:
The method structure is simple, and easily, and magnetic liquid is adsorbed in the gap that formed with central shaft and the left pole shoe of annular in gap that central shaft and the right pole shoe of annular formed completely, reaches the object of dust sealing, ensure that the reliability of dust sealing in assembling.Prevent introduced contaminants from entering, avoiding the impurity such as dust to hinder central shaft to rotate freely, being of great importance to correctly judging whether blower normally works.
Accompanying drawing explanation
Fig. 1 has the wind sensor half sectional view of magnetic liquid dust-proof sealing device.
Fig. 2 has the wind sensor worm's eye view of magnetic liquid dust-proof sealing device
In figure: central shaft 1, annular right pole shoe 2, annular permanent magnet 3, annular left pole shoe 4, magnetic liquid 5, central axle sleeve 6, shell 7, swing magnetic post 8, magnetic core 9, magnetic pole screw 10, wind flag 11, positioning screwn 1, positioning screwn 2 13.
When there is no wind in the air channel of blower, the magnetic core 9 of wind sensor can because be subject to the attraction of magnetic pole screw 10, and drive swing magnetic post 8 gear to lean against on positioning screwn 1, now think that the angle of swing of central shaft 1 is 0 degree, when blower normally works, wind flag 11 can experience wind-force, and then band central shaft 1 rotates a certain angle, now swinging magnetic post 8 can be close to positioning screwn 2 13, most backstop leans against on positioning screwn 2 13, now think that blower is working properly, when the decline of blower wind-force or when turning off the blast, magnetic core 9 can because be subject to the attraction of magnetic pole screw 10, and drive swing magnetic post 8 can leave positioning screwn 2 13, close to positioning screwn 1, now by specific signal transmission equipment, blower operation irregularity can be judged.
When having dust impurity to enter between central shaft 1 and central axle sleeve 6, central shaft can be hindered to rotate, accurately cannot judge whether blower normally works, the present invention utilizes magnetic fluid seal device to solve the dust-proof problem of this wind sensor.
Embodiment
For a magnetic liquid dust-proof sealing device for wind sensor, comprise central shaft 1, annular right pole shoe 2, annular permanent magnet 3, annular left pole shoe 4, magnetic liquid 5, central axle sleeve 6, shell 7, swing magnetic post 8, magnetic core 9, magnetic pole screw 10, wind flag 11, positioning screwn 1, positioning screwn 2 13;
Connection between above-mentioned part:
The external diameter of right for annular pole shoe 2 is alignd with the external diameter of annular permanent magnet 3, and by the lower surface of right for annular pole shoe 2 and the upper surface sealer of annular permanent magnet 3 bonding, the external diameter of left for annular pole shoe 4 is alignd with the external diameter of annular permanent magnet 3, and by bonding for the upper surface sealer of left to the lower surface of annular permanent magnet 3 and annular pole shoe 4, form sealing configuration overall;
Central axle sleeve 6 loads in shell 7, and welds in bottom, loads in shell 7, the top of central axle sleeve 6 by the sealing configuration entirety formed;
Being utilized by magnetic pole screw 10 is threaded onto on shell 7, is contained on shell 7 by positioning screwn 1 and positioning screwn 2 13;
Magnetic core 9 is loaded and swings in magnetic post 8;
Wind flag 11 is welded on central shaft 1, central shaft 1 is loaded sealing configuration entirety, central axle sleeve 6 and swing in magnetic post 8, fixing with Cock screw;
Magnetic liquid 5 is injected respectively in gap that central shaft 1 and the right pole shoe of annular 2 formed and in gap that central shaft 1 and the left pole shoe 4 of annular are formed.
The magnetic field that described magnetic liquid 5 produces due to annular permanent magnet 3, be adsorbed in the gap that formed with central shaft 1 and the left pole shoe 4 of annular in gap that central shaft 1 and the right pole shoe of annular 2 formed, prevent introduced contaminants from entering central shaft 1 and the gap of central axle sleeve 6, reach the object of dust sealing.
Fig. 1 is the wind sensor half sectional view with magnetic liquid dust-proof sealing device, and Fig. 2 is the wind sensor worm's eye view with magnetic liquid dust-proof sealing device.
Claims (1)
1. for a magnetic liquid dust-proof sealing device for wind sensor, it is characterized in that: this device comprises with lower component:
Central shaft (1), annular right pole shoe (2), annular permanent magnet (3), annular left pole shoe (4), magnetic liquid (5), central axle sleeve (6), shell (7), swing magnetic post (8), magnetic core (9), magnetic pole screw (10), wind flag (11), positioning screwn one (12), positioning screwn two (13);
Connection between above-mentioned part:
The external diameter of right for annular pole shoe (2) is alignd with the external diameter of annular permanent magnet (3), and by bonding with the upper surface sealer of annular permanent magnet (3) for the lower surface of right for annular pole shoe (2), the external diameter of left for annular pole shoe (4) is alignd with the external diameter of annular permanent magnet (3), and the lower surface of annular permanent magnet (3) is bonding with the upper surface sealer of the left pole shoe of annular (4), form sealing configuration overall;
Central axle sleeve (6) loads in shell (7), and welds in bottom, and the sealing configuration entirety formed loaded in shell (7), sealing structure is positioned at the top of central axle sleeve (6);
Being utilized by magnetic pole screw (10) is threaded onto on shell (7), is contained on shell (7) by positioning screwn one (12) and positioning screwn two (13);
Being loaded by magnetic core (9) swings in magnetic post (8);
Wind flag (11) is welded on central shaft (1), central shaft (1) is loaded sealing configuration entirety, central axle sleeve (6) and swing in magnetic post (8), fixing with Cock screw;
Magnetic liquid (5) is injected respectively in gap that central shaft (1) and the right pole shoe of annular (2) formed and in gap that central shaft (1) and the left pole shoe of annular (4) are formed;
The magnetic field that described magnetic liquid (5) produces due to annular permanent magnet (3), be adsorbed in gap that central shaft (1) and the right pole shoe of annular (2) formed and in gap that central shaft (1) and the left pole shoe of annular (4) are formed, prevent introduced contaminants from entering central shaft (1) and the gap of central axle sleeve (6), reach the object of dust sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310125420.8A CN103234048B (en) | 2013-04-11 | 2013-04-11 | A kind of magnetic liquid dust-proof sealing device for wind sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310125420.8A CN103234048B (en) | 2013-04-11 | 2013-04-11 | A kind of magnetic liquid dust-proof sealing device for wind sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103234048A CN103234048A (en) | 2013-08-07 |
| CN103234048B true CN103234048B (en) | 2015-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310125420.8A Expired - Fee Related CN103234048B (en) | 2013-04-11 | 2013-04-11 | A kind of magnetic liquid dust-proof sealing device for wind sensor |
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| Country | Link |
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| CN (1) | CN103234048B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963545B (en) * | 2021-03-19 | 2022-02-25 | 清华大学 | Magnetic liquid sealing device and assembling method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0592088A1 (en) * | 1992-10-08 | 1994-04-13 | Meggitt (U.K.) Limited | Encoding device |
| CN1300933A (en) * | 2001-02-08 | 2001-06-27 | 北京科大天宇微电子材料技术开发有限公司 | Slope angle sensor using magnetosensitive resistor |
| CN102288214A (en) * | 2011-04-22 | 2011-12-21 | 李耀强 | Sensor with movable type gland |
| CN202533453U (en) * | 2012-01-16 | 2012-11-14 | 上海南华机电有限公司 | Wind cup assembly, wind vane assembly, wind speed sensor and wind direction sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130028328A (en) * | 2011-09-09 | 2013-03-19 | 이진욱 | Wind direction sensor(vane type) observing angle examiner and correcting north position calibrator(directly adhere to sensor - handy handle detachable disk type) |
-
2013
- 2013-04-11 CN CN201310125420.8A patent/CN103234048B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0592088A1 (en) * | 1992-10-08 | 1994-04-13 | Meggitt (U.K.) Limited | Encoding device |
| CN1300933A (en) * | 2001-02-08 | 2001-06-27 | 北京科大天宇微电子材料技术开发有限公司 | Slope angle sensor using magnetosensitive resistor |
| CN102288214A (en) * | 2011-04-22 | 2011-12-21 | 李耀强 | Sensor with movable type gland |
| CN202533453U (en) * | 2012-01-16 | 2012-11-14 | 上海南华机电有限公司 | Wind cup assembly, wind vane assembly, wind speed sensor and wind direction sensor |
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|---|---|
| CN103234048A (en) | 2013-08-07 |
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Granted publication date: 20151028 Termination date: 20200411 |
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| CF01 | Termination of patent right due to non-payment of annual fee |