KR20040034621A - A sealing method of motor shafts under rotations simultaneous with rectilinear motions with magnetic fluids between the motor shaft and the radial magnet with a single pole. - Google Patents
A sealing method of motor shafts under rotations simultaneous with rectilinear motions with magnetic fluids between the motor shaft and the radial magnet with a single pole. Download PDFInfo
- Publication number
- KR20040034621A KR20040034621A KR1020040001865A KR20040001865A KR20040034621A KR 20040034621 A KR20040034621 A KR 20040034621A KR 1020040001865 A KR1020040001865 A KR 1020040001865A KR 20040001865 A KR20040001865 A KR 20040001865A KR 20040034621 A KR20040034621 A KR 20040034621A
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- South Korea
- Prior art keywords
- magnet
- magnetic
- pole
- radial magnet
- magnetic fluid
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/44—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of magnetic liquids, e.g. ferrofluids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/02—Permanent magnets [PM]
- H01F7/0231—Magnetic circuits with PM for power or force generation
- H01F7/0252—PM holding devices
Abstract
Description
본 발명은 회전과 직선운동 겸용 자성유체 실링 장치로서 자성유체를 이용한실링 장치에 관한 것이며 기존의 자성유체 실링 장치들은 (도 6)과 (도 7)의 일반 자석(8)처럼 자석의 자극구조가 상하 단일 극으로 착자된 일반자석(8)을 사용하기 때문에 자성유체를 이용하여 실링 장치를 구성하기위해서는 일반자석(8)이 비록 본 발명의 레디알 자석처럼 중앙이 원통형으로 형성된 원통형 자석이라 할지라도 착자된 자극이 원통형 자석의 길이방향으로 대칭된 자극을 가지게 되어서 자성유체에 가해지는 자기력이 최대가 되게 하기 위해서는 따로 자기적 특성이 좋은 재질로 자기 극편을 만들어서 실링 장치를 구성해야하는 단점이 있으며 자기 극편으로 자기력을 집중시킨다고 하여도 본 발명에서 사용된 레디알 자석과는 많은 자기력차가 발생하게 되며 구조가 복잡해지거나 효율이 떨어지는 단점이 있었다.The present invention relates to a sealing device using a magnetic fluid as a magnetic fluid sealing device for both rotation and linear motion, and the conventional magnetic fluid sealing devices have a magnetic pole structure of the magnet as shown in FIGS. 6 and 7. In order to form a sealing device using a magnetic fluid, because the common magnet 8 magnetized by upper and lower single poles is used, even if the normal magnet 8 is a cylindrical magnet formed in a cylindrical shape in the center like a radial magnet of the present invention, the magnet is magnetized. In order to maximize the magnetic force applied to the magnetic fluid because the magnetic poles are symmetrical in the longitudinal direction of the cylindrical magnet, the sealing device must be made of magnetic pole pieces made of a material having good magnetic properties. Even if the magnetic force is concentrated, a large magnetic force difference is generated from the radial magnet used in the present invention. There was a downside complexity or efficiency falls.
(도 7)의 도면에서 보면 일반 자석(8)의 자기장 분포는 각각의 극 즉 N극과 S극이 실링하고자 하는 작동축이 있는 내경이 아니고 양 끝단부에 자극이 형성되어서 축에 전해지는 자기력이 약하게 된다.In the diagram of FIG. 7, the magnetic field distribution of the general magnet 8 is not the inner diameter of each pole, that is, the N pole and the S pole, to which the pole is to be sealed, but the magnetic force transmitted to the shaft by forming magnetic poles at both ends. This becomes weak.
자기력은 각각의 극 즉, N극과 S극에서 가장 강하다.Magnetic force is strongest at each pole, N pole and S pole.
본 발명은 기존의 문제점을 해결하기 위하여 (도 1)처럼 내, 외경이 각각 단일 극으로 형성되어 (도 7)의 일반 자석과 레디알 자석(2)의 비교에서 오른 쪽의 레디알 자석(2)의 자기력선 분포에서 보는 바와 같이 각각의 자극이 작동 축과 서로 나란히 마주보게 되어서 자기력이 가장 강한 부위 즉 자극이 작동 축과 서로 밀착되는 레디알 자석(2)을 사용하여 실링 장치의 외측 하우징(5)의 내부 홈에 레디알 자석(2)을 설치하여 레디알 자석(2)과 실링 하고자하는 작동 축(4) 사이에 자성유체(1)가 주입됨으로 작동 축(4)이 고속으로 회전하더라도, 자성유체(1)가 외부로누출되지 않으며 레디알 자석(2)의 자력에 의해 자성유체(1)가 강한 자기력의 힘으로 흡착되어 있음으로 상당한 압력이 걸리더라도 실링 효과를 발휘할 수 있다. 본 발명의 효과를 높이기 위해서 (도 1)처럼 내, 외부가 단일 극으로 형성된 레디알 자석(2)이 필요하며 레디알 자석(2)의 자극 배치는 (도 3)에서 보는 바와 같이 좌우가 서로 같은 극으로 배치되어 두 자극 사이에 주입되는 자성유체(1)에 서로 끌어당기는 힘이 강하게 발생되어 레디알 자석(2)과 작동 축(4) 사이의 간격을 최대한 줄일 경우 레디알 자석(2)과 작동 축(4)사이에 주입된 자성유체(1)의 자기력은 최대가 되어 실링 효과는 극대화된다.In order to solve the existing problems, the present invention has a single pole inside and outside diameter as shown in FIG. 1, so that the right side of the radial magnet 2 in the comparison of the ordinary magnet and the radial magnet 2 of FIG. As shown in the magnetic force line distribution, each magnetic pole faces each other in parallel with the working axis, so that the inner side of the outer housing 5 of the sealing device using a radial magnet 2 in which the magnetic force is strongest, that is, the magnetic pole is in close contact with the working axis. Although the magnetic fluid 1 is inserted between the radial magnet 2 and the working shaft 4 to be sealed by installing the radial magnet 2 in the groove, the magnetic fluid 1 may be rotated at high speed. Is not leaked to the outside and the magnetic fluid 1 is adsorbed by the force of the strong magnetic force by the magnetic force of the radial magnet 2, it can exhibit a sealing effect even if a significant pressure is applied. In order to enhance the effect of the present invention, a radial magnet 2 having a single pole is formed inside and outside as shown in FIG. 1, and the magnetic pole arrangement of the radial magnet 2 has the same pole as shown in FIG. 3. When the magnetic force (1) disposed between the two magnetic poles is attracted to each other and is strongly generated to reduce the distance between the radial magnet (2) and the working shaft (4) as much as possible, the radial magnet (2) and the working shaft ( 4) The magnetic force of the magnetic fluid 1 injected between them is maximized, and the sealing effect is maximized.
본 발명은 현재까지 개발된 자성유체 실링 장치의 단점인 낮은 허용압력을 높일 수 있다. 자극과 축 사이에 주입된 자성유체의 실링 효과는 일반 자석을 이용한 다른 방법보다 더 우수한 효과가 발생된다.The present invention can increase the low allowable pressure which is a disadvantage of the magnetic fluid sealing device developed to date. The sealing effect of the magnetic fluid injected between the magnetic pole and the shaft is better than other methods using ordinary magnets.
단, 레디알 자석(2)과 자성유체(1)사이에 서로 작용하고 있는 자기력의 한계를 벗어나지 않는 범위 내에서 안정된 작동을 보장할 수 있다.However, it is possible to ensure stable operation within the range without departing from the limits of the magnetic force acting between the radial magnet 2 and the magnetic fluid (1).
본 발명은 특수 착자법의 한가지인 내외경 1극착자법에 의해서 착자되어 내경과 외경이 각각 1극으로 구성되어진 레디알 자석(2)을 이용하여 회전하거나 직선 운동을 하는 곳의 실링장치나 윤활 역할을 하는 것으로 내외경이 각각 1극으로 착자된 레디알 자석(2)을 사용하는 것이 본 발명의 핵심 요소 중의 하나이다.The present invention is a sealing device or a lubricating role in the place of rotating or linear motion by using a radial magnet 2 which is magnetized by the inner and outer diameter 1-pole magnetization method, which is one of the special magnetization methods, and has an inner diameter and an outer diameter each composed of one pole. One of the key elements of the present invention is to use the radial magnets 2 magnetized into one pole, respectively.
본 발명은 (도 1)에서 보는 바와 같이 링 형태의 자석이 내경이 전부 같은 자극으로 구성되며 외경은 내경에 반대가 되는 자극을 형성하게 된다.In the present invention, as shown in (FIG. 1), the ring-shaped magnet is composed of all magnetic poles having the same inner diameter, and the outer diameter forms a magnetic pole opposite to the inner diameter.
본 발명의 자성유체는 레디알 자석(2)의 중앙을 축이 관통하도록 배치되어 있어 레디알 자석(2)과 축 사이에 주입되는 것으로 자석에서 발생되는 자기력에 의해 자성유체가 자화되어 자석에 흡착되며 실링 하고자 하는 축이 회전하여 원심력이 발생하더라도 강한 자기력 때문에 자석으로부터 분리되지 않으며 실링 하고자 하는 곳에 내외 부에 압력이 걸리더라도 실링 역할을 할 수 있는 것이다.The magnetic fluid of the present invention is disposed so that the shaft penetrates the center of the radial magnet 2 and is injected between the radial magnet 2 and the shaft. The magnetic fluid is magnetized by the magnetic force generated by the magnet and is adsorbed to the magnet and sealed. Even if the axis to be rotated generates centrifugal force, it is not separated from the magnet due to the strong magnetic force, and it can play a role of sealing even if pressure is applied to the inside and outside of the place to be sealed.
다만 자석에서 발생하는 자기력과 자성유체(1)사이의 흡착력의 한계범위 내에서 실링 효과를 발휘할 수 있다.However, the sealing effect can be exhibited within the limit range of the adsorption force between the magnetic force generated from the magnet and the magnetic fluid (1).
본 발명은 자성유체와 레디알 자석(2)을 이용하여 실링 장치를 구성함에 있어서 실행 부위의 마찰력을 최소화하고 복잡하지 않는 구조의 실링 장치로 간단하게 기존의 장비들에 부착하여 기존의 것보다 뛰어난 실링 효과를 발휘하는 자성유체 실링 장치를 구성하는 것이다.The present invention minimizes the frictional force of the execution site in the composition of the sealing device using the magnetic fluid and the radial magnet (2), and the sealing device of the structure that is not complicated, simply attached to the existing equipment and excellent sealing than the existing The magnetic fluid sealing apparatus which exhibits an effect is comprised.
[도 1] : 내외경 1극 착자자석1: Inside and outside diameter 1 pole magnet
[도 2] : 개요도2: Outline drawing
[도 3] : 실링장치의 자석과 축의 배치 단면도3 is a cross-sectional view of the magnet and the shaft of the sealing device
[도 4] : 실링 장치의 단면도4 is a sectional view of the sealing apparatus.
[도 5] : 실링장치의 정면도5: Front view of the sealing device
[도 6] : 일반 자석과 내외경 1극 착자자석의 비교FIG. 6: Comparison between a normal magnet and an inner and outer diameter one-pole magnetized magnet
[도 7] : 일반 자석과 내외경 1극 착자자석의 자기력선 비교FIG. 7: Comparison of magnetic field lines between a general magnet and a magnet with a magnet inside and outside
1 : 자성유체, 2 : 레디알 자석, 3 : 외측 하우징,1: magnetic fluid, 2: radial magnet, 3: outer housing,
4 : 작동 축, 5 : 실링용 링, 6 : 결속용 링,4 working shaft, 5 sealing ring, 6 binding ring,
7 : 고정용 볼트홀, 8 : 일반자석, 9 : 자기력 선.7: fixing bolt hole, 8: general magnet, 9: magnetic field wire.
본 발명은 (도 2)에서 보는 것과 같이 외부 하우징(3)에 내측과 외측이 각각 1극으로 착자된 레디알 자석(2)이 외부 하우징(3)의 내부에 삽입되고 레디알 자석(2)의 중앙 내측에 작동축(4)이 삽입되어 레디알 자석(2)과 작동 축(4) 사이의 공간에 자성유체(1)를 주입시켜 레디알 자석(2)에서 발생하는 강한 자기력에 의해 자성유체(1)도 자기유도가 되어 레디알 자석(2)과 작동 축(4)사이의 공간을 실링 하게 된다.According to the present invention, as shown in FIG. 2, the radial magnet 2 magnetized to the outer housing 3 by one pole is inserted into the outer housing 3, and the center of the radial magnet 2 is inserted into the outer housing 3. The working shaft 4 is inserted inside to inject the magnetic fluid 1 into the space between the radial magnet 2 and the working shaft 4 so that the magnetic fluid 1 is formed by the strong magnetic force generated by the radial magnet 2. The magnetic induction also seals the space between the radial magnet 2 and the working shaft 4.
본 발명은 레디알 자석(2)과 자성유체(1)를 이용하여 실링 장치를 구성함에 있어서 간단한 실링 장치를 구성하며 또한 (도 4)과 같이 회전하는 축이나 직선 운동하는 축에 마찰력이나 회전 및 직선운동의 부하가 걸리지 않는 실링을 할 수 있다.The present invention constitutes a simple sealing device in constructing a sealing device using the radial magnet 2 and the magnetic fluid 1, and also has a frictional force, a rotation and a straight line in the rotating shaft or the linearly moving shaft as shown in FIG. The sealing can be done without the load of exercise.
본 발명의 실링 장치는 심한 외부적인 충격이 가해지지 않는한 실링 장치를 반영구적으로 사용가능 하다.The sealing device of the present invention can be used semi-permanently as long as a severe external shock is not applied.
(도 4)의 구성은 실링 장치를 구성하고 있는 외측 하우징(3)에 내측과 외측이 각각 1극으로 착자된 레디알 자석(2)이 (도 3)에서 보는 것과 같이 취부되며 레디알 자석(2)이 취부되는 외측 하우징(3)에 실링용 링(5)이 삽입되어 자석과 하우징을 실링하게 되며 자석의 이탈을 방지하고 자석의 파손시에 쉬운 교체작업을 위하여 결속용 링(6)이 삽입되어 자석과 외부 하우징(3)을 실링 및 고정한다.In Fig. 4, the radial magnet 2, in which the inner side and the outer side are magnetized to one pole, respectively, is mounted on the outer housing 3 constituting the sealing device as shown in Fig. 3, and the radial magnet 2 The sealing ring 5 is inserted into the outer housing 3 to be mounted to seal the magnet and the housing, and the binding ring 6 is inserted to prevent detachment of the magnet and for easy replacement when the magnet is broken. Seal and fix the magnet and outer housing (3).
본 발명은 자성유체(1)를 이용한 실링 장치로 내경과 외경이 각각 1극으로 착자된 레디알 자석(2)을 이용하여 자석과 자성유체(1)사이의 자계 강도를 극대화 시켜서 기존의 자성유체 실링 장치보다 장치의 구성이 쉽고 실링 효율도 더 효과적이며 적용하고자 하는 장비에 볼트홀(7)을 가공하여 간단히 취부할 수 있는 실링 장치를 구성하며 마찰력이 없어서 정밀 작동 장비에 효과적으로 사용할 수 있다.The present invention is to seal the existing magnetic fluid by maximizing the magnetic field strength between the magnet and the magnetic fluid (1) by using a radial magnet (2) magnetized into one pole of the inner diameter and the outer diameter as a sealing device using a magnetic fluid (1) The device is easier to configure than the device, and the sealing efficiency is more effective, and the sealing device can be easily mounted by machining the bolt hole 7 on the equipment to be applied.
Claims (1)
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Application Number | Priority Date | Filing Date | Title |
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KR1020040001865A KR100576106B1 (en) | 2004-01-08 | 2004-01-08 | A sealing method of motor shafts under rotations simultaneous with rectilinear motions with magnetic fluids between the motor shaft and the radial magnet with a single pole. |
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KR1020040001865A KR100576106B1 (en) | 2004-01-08 | 2004-01-08 | A sealing method of motor shafts under rotations simultaneous with rectilinear motions with magnetic fluids between the motor shaft and the radial magnet with a single pole. |
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KR20-2002-0024855U Division KR200301819Y1 (en) | 2002-08-17 | 2002-08-17 | A sealing method of motor shafts under rotations simultaneous with rectilinear motions with magnetic fluids between the motor shaft and the radial magnet with a single pole. |
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KR20040034621A true KR20040034621A (en) | 2004-04-28 |
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