CN201328063Y - Magnetic transmission seal - Google Patents
Magnetic transmission seal Download PDFInfo
- Publication number
- CN201328063Y CN201328063Y CNU2008201245472U CN200820124547U CN201328063Y CN 201328063 Y CN201328063 Y CN 201328063Y CN U2008201245472 U CNU2008201245472 U CN U2008201245472U CN 200820124547 U CN200820124547 U CN 200820124547U CN 201328063 Y CN201328063 Y CN 201328063Y
- Authority
- CN
- China
- Prior art keywords
- magnet
- cage
- outer magnet
- interior
- inner magnet
- 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.)
- Expired - Fee Related
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000005415 magnetization Effects 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 6
- 238000010276 construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model belongs to the sealing technique relates to a magnetic drive is sealed. The utility model discloses a micro motor and power, the transmission is sealed still includes the outer magnet, interior magnet and cage, the main aspects inner wall of outer magnet is with radial magnetized permanent magnet, the tip of outer magnet is radially opened threaded hole and micro motor's output shaft and is connected through awl end holding screw, the cage inner wall is equipped with antifriction bearing's shaft shoulder, cage main aspects edge is equipped with the through-hole, the tip of cage is placed between interior magnet and outer magnet, be with the radial magnetized permanent magnet opposite with the outer magnet in the interior magnet, in the cage is put into to one side of interior magnet, the opposite side of interior magnet is the working shaft. The utility model discloses transmit the power of motor for the epaxial interior magnet of working through its epaxial outer magnet of output, interior outer magnet is separated by the cage to the working shaft need not to stretch out the confined space, has solved the sealed problem of digital gas piston pressure gauge, has realized not having sealed, zero leakage.
Description
Technical field
The utility model belongs to Sealing Technology, relates to a kind of magnetic drives sealing.
Background technology
The fluid machinery ubiquity that uses in the process industrial leakage problem.Leakage can cause the waste of the energy, the loss of material, the decline of product quality, the damage of equipment, the pollution of environment, thereby infringement staff's health, even can lead to fire, set off an explosion, cause stopping production, directly jeopardize personal safety, bring the tremendous economic loss.Though seal is a parts just, but can determine fail safe, reliability and the durability of machinery equipment, petrochemical enterprise particularly, what handle is to have corrosivity or inflammable, explosive and poisonous medium mostly, and higher pressure and temperature arranged usually, in case leak, cause serious accident, the harm that causes is just bigger.Along with the development of industrial production to high temperature, high pressure, high speed, hermetically-sealed construction guarantees to reach the requisite critical elements of environment provided especially.
At present, machine driving is by the tight engagement between object plane mostly, relies on mutual contact friction to finish.For the higher piston manometer of seal request,, mechanical dynamic seal is had higher requirement if adopt traditional machine driving.However, mechanical dynamic seal does not realize that still zero reveals, and the auxiliary system of the adapted that requires also can compare costliness when elevated pressures.
Current, the method that gas piston pressure gauge hermetically-sealed construction mainly adopts has mechanical dynamic seal and puts drive disk assembly into vacuum chamber inner two kinds of methods.Mechanical dynamic seal is the cost height not only, and sealing effectiveness is undesirable, easily gas is polluted.The method of drive disk assembly being put into vacuum chamber inside causes vacuum chamber too big, is not easy when vacuumizing to stablize.Therefore, invent very necessity of a kind of good transmission seal method for the gas piston pressure gauge.
Summary of the invention
The purpose of this utility model provide a kind of simple in structure, price is easy and can realize the zero magnetic drives sealing of revealing.
Technical solution of the present utility model is, comprise micromotor and power supply, transmission seal also comprises outer magnet, inner magnet and cage, the big end inwall of outer magnet is with the permanent magnet of diametrical magnetization, the top end diameter of outer magnet is connected by awl end holding screw with the output shaft of micromotor to having screwed hole, micromotor links to each other with DC power supply, on the DC power supply outer surface switch is housed; The cage inwall is provided with the shaft shoulder of rolling bearing, and the big end margin of cage is provided with through hole, and the large end face place of cage is provided with circular groove, places O type circle in the circular groove; The small end of cage places between inner magnet and the outer magnet, and the big end of inner magnet is provided with cannelure, and with the diametrical magnetization permanent magnet opposite with outer magnet, a side of inner magnet is gone in the cage in the cannelure, and the opposite side of inner magnet is a working shaft; Rolling bearing and bearing stop collar are housed between cage and the working shaft.
Described cage is that non-ferritic high-resistance material is made.
The beneficial effects of the utility model are: the power of motor is passed to inner magnet on the working shaft by the outer magnet on its output shaft, interior outer magnet is separated by cage, thereby working shaft need not to stretch out the space that will seal, solved the manometric sealing problem of digital gas piston, realized not having sealing, zero leakage.In addition, advantage such as the sealing of this magnetic drives also has no wearing and tearing, friction, noiselessness, need not to lubricate, transmission efficiency height and life-span are grown is desirable transmission seal structure.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is an inner magnet fundamental diagram of the present utility model, and wherein, 2-a is an inactive state inner magnet operation principle, and 2-b is an operating state inner magnet operation principle.
Embodiment
Below in conjunction with accompanying drawing the utility model is done following detailed description.
As Fig. 2, magnetic seal of the present utility model, comprise micromotor 2 and power supply 1, transmission seal also comprises outer magnet 3, inner magnet 5 and cage 8, the big end inwall of outer magnet 3 is with the permanent magnet 6 of diametrical magnetization, the top end diameter of outer magnet 3 is connected by awl end holding screw 13 with the output shaft of micromotor 2 to having screwed hole 12, and micromotor 2 links to each other with DC power supply 1, on DC power supply 1 outer surface switch 10 is housed; Cage 8 inwalls are provided with the shaft shoulder 16,19 of rolling bearing, and cage 8 big end margins are provided with through hole 20, and the large end face place of cage 8 is provided with circular groove 22, place O RunddichtringO 23 in the circular groove 22; The small end of cage 8 places between inner magnet 5 and the outer magnet 3, the big end of inner magnet 5 is provided with cannelure 15, have the diametrical magnetization permanent magnet 14 opposite in the cannelure 15 with outer magnet, the outside of cannelure 15 is provided with catch 4, the middle part of inner magnet 5 is provided with the shaft shoulder 8 of rolling bearing, one side of inner magnet 5 is gone in the cage 8, and the opposite side of inner magnet 6 is a working shaft 9; Rolling bearing 17,21 and bearing stop collar 18 are housed between cage 8 and the working shaft 9.
The course of work of the present utility model is: the operation principle of at first introducing magnetic drives, inner magnet is formed by the permanent magnet that radially magnetization and magnetizing direction are opposite, permanent magnet is along the circumferential direction alternately arranged with opposed polarity, when inactive state, the S utmost point (the N utmost point) of the N utmost point of outer magnet (the S utmost point) and inner magnet attracts each other and in line, torque this moment is zero, as shown in Figure 2.When rotating under the drive of outer magnet at motor, just begun inner magnet because the effect of frictional force and transmission part resistance, still remain static, at this moment the relative inner magnet of outer magnet begins to be offset certain angle, because the existence of this angle, the N utmost point of outer magnet (the S utmost point) has a pulling function to the S utmost point (the N utmost point) of inner magnet, the N utmost point (the S utmost point) of outer magnet has an impetus to the previous N utmost point (the S utmost point) of inner magnet simultaneously, make inner magnet that the and then trend of rotation, the push-and-pull magnetic circuit operation principle of Magnetic Force Transmission Coupling that Here it is be arranged.When the N of the outer magnet utmost point (the S utmost point) just was positioned between 2 utmost points (the S utmost point and the N utmost point) of inner magnet, it is maximum that the push-pull effort of generation reaches, and as shown in Figure 2, thereby drives the inner magnet rotation.
During mains switch 10 access failures, because inner magnet is formed by the permanent magnet that radially magnetization and magnetizing direction are opposite, permanent magnet is along the circumferential direction alternately arranged with opposed polarity, the S utmost point (the N utmost point) of the N utmost point of outer magnet (the S utmost point) and inner magnet attracts each other and in line, therefore torque this moment is zero, as shown in Figure 4.When mains switch 10 is connected, circuit is connected, micromachine 2 rotations, drive connected outer magnet 3 rotations, inner magnet when just beginning is because the effect of frictional force and transmission part resistance, still remain static, at this moment the relative inner magnet 5 of outer magnet begins to be offset certain angle, because the existence of this angle, the N utmost point of outer magnet (the S utmost point) has a pulling function to the S utmost point (the N utmost point) of inner magnet, the N utmost point (the S utmost point) of outer magnet has an impetus to the previous N utmost point (the S utmost point) of inner magnet simultaneously, makes inner magnet that the and then trend of rotation, the push-and-pull magnetic circuit operation principle of Magnetic Force Transmission Coupling that Here it is be arranged.When the N of the outer magnet utmost point (the S utmost point) just is positioned between 2 utmost points (the S utmost point and the N utmost point) of inner magnet, it is maximum that the push-pull effort that produces reaches, as shown in Figure 2, thereby drive the inner magnet rotation, promptly working shaft rotates, and cage separates inner magnet fully, thereby working shaft need not to stretch out the space that will seal, realized contactless transmission, solved the manometric sealing problem of digital gas piston, realized not having sealing, zero leakage.
Claims (2)
1. magnetic drives sealing, comprise micromotor and power supply, it is characterized in that: transmission seal also comprises outer magnet, inner magnet and cage, the big end inwall of outer magnet is with the permanent magnet of diametrical magnetization, and the top end diameter of outer magnet is connected by awl end holding screw with the output shaft of micromotor to having screwed hole; Micromotor links to each other with DC power supply, on the DC power supply outer surface switch is housed; The cage inwall is provided with the shaft shoulder of rolling bearing, and the big end margin of cage is provided with through hole, and the large end face place of cage is provided with circular groove, places the O RunddichtringO in the circular groove, and the small end of cage places between inner magnet and the outer magnet; The big end of inner magnet is provided with cannelure, with the diametrical magnetization permanent magnet opposite with outer magnet, the outside of cannelure is provided with catch in the cannelure, and the middle part of inner magnet is provided with the shaft shoulder of rolling bearing, one side of inner magnet is gone in the cage, and the opposite side of inner magnet is a working shaft; Rolling bearing and bearing stop collar are housed between cage and the working shaft.
2. magnetic drives sealing according to claim 1 is characterized in that described cage is that non-ferritic high-resistance material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201245472U CN201328063Y (en) | 2008-12-24 | 2008-12-24 | Magnetic transmission seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201245472U CN201328063Y (en) | 2008-12-24 | 2008-12-24 | Magnetic transmission seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201328063Y true CN201328063Y (en) | 2009-10-14 |
Family
ID=41180024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201245472U Expired - Fee Related CN201328063Y (en) | 2008-12-24 | 2008-12-24 | Magnetic transmission seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201328063Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682659A (en) * | 2014-09-13 | 2015-06-03 | 北京精密机电控制设备研究所 | Magnetic transmission device |
| CN105617712A (en) * | 2016-03-18 | 2016-06-01 | 太仓顺达磁力泵科技有限公司 | Totally-enclosed centrifugal type extraction device |
| CN105896883A (en) * | 2014-10-02 | 2016-08-24 | 李启飞 | P-type ball screw electric speed regulation disk type magnetic coupler |
| CN108590920A (en) * | 2018-03-08 | 2018-09-28 | 江苏大学 | A kind of hydraulic turbine installation |
| CN112953095A (en) * | 2021-03-24 | 2021-06-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Magnetic coupling low-vibration motor |
-
2008
- 2008-12-24 CN CNU2008201245472U patent/CN201328063Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104682659A (en) * | 2014-09-13 | 2015-06-03 | 北京精密机电控制设备研究所 | Magnetic transmission device |
| CN105896883A (en) * | 2014-10-02 | 2016-08-24 | 李启飞 | P-type ball screw electric speed regulation disk type magnetic coupler |
| CN105617712A (en) * | 2016-03-18 | 2016-06-01 | 太仓顺达磁力泵科技有限公司 | Totally-enclosed centrifugal type extraction device |
| CN108590920A (en) * | 2018-03-08 | 2018-09-28 | 江苏大学 | A kind of hydraulic turbine installation |
| CN112953095A (en) * | 2021-03-24 | 2021-06-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Magnetic coupling low-vibration motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20141224 |
|
| EXPY | Termination of patent right or utility model |