• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    PURPOSE: A magnetic fluid sealing device and a bearing sealing device are provided to prevent a decrease of rotating force and leakage of lubricant. CONSTITUTION: A magnetic fluid sealing device comprises a radial magnet(1) having a doughnut shape, and an inner circumference on which a single pole is arranged and an outer circumference on which a single pole is arranged. The radial magnet mounted at the outside from an inner housing is inserted into the center of the radial magnet mounted at the inside of an outer housing. A magnetic fluid is injected into the gap formed between the two radial magnets.
    公开号:KR20040034622A
    申请号:KR1020040001866
    申请日:2004-01-08
    公开日:2004-04-28
    发明作者:김동섭；이준열
    申请人:(주)다라기술；
    IPC主号:
    专利说明:

    (A sealing method of motor shafts with magnetic fluids between the motor shaft and the radial magnet with a single pole, and a sealing method of a bearing housing with magnetic fluids between the bearing center and the radial magnet with a single pole.}
    [21] In order to construct the present invention, a ring-shaped magnet is required to have a radial magnet 1 (FIG. 2) formed inside and outside of a single pole, and installed in both the inner and inner housings 6 of the outer housing 5 of the bearing. Since the magnetic fluid 4 is injected between the outer magnet 2 and the inner magnet 3, even if the bearing rotates at a high speed, the magnetic fluid 4 does not leak to the outside and the lubricant injected into the bearing can be prevented. Since the magnetic fluid 4 is adsorbed by the strong force by the magnetic force of the radial magnet 1 provided on the outside, even if a considerable pressure is applied, the execution effect can be exhibited.
    [22] In order to enhance the effect of the present invention, a radial magnetic (1) (FIG. 2) having a single pole inside and outside is required, and the arrangement of magnetic poles of the radial magnetic (1) faces different poles as shown in (FIG. 4). The magnetic fluid injected between the two magnets when the magnetic fluid 4 is disposed in the form and attracts each other is strongly generated to reduce the gap between the outer magnet 2 and the inner magnet 3 as much as possible. The sealing effect of (4) is maximized.
    [23] The present invention can increase the low allowable pressure which is a disadvantage of the magnetic fluid sealing device developed to date. It is more effective than other methods using ordinary magnets injected between magnetic poles. 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 (1) and the magnetic fluid (4).
    [24] According to the present invention, the magnetic fluid 4 is magnetized by the magnetic force generated between the two magnets by injecting the magnetic fluid 4 between the radial magnets 1 disposed to face each other as shown in FIGS. 3 and 4. It is composed of a sealing device that can perform the sealing role even if pressure is applied between the two magnets and the shaft to be sealed is rotated and the centrifugal force is generated from the magnet due to the strong magnetic force.
    [25] The present invention is a sealing device of the place where the rotational movement using the radial magnet (1), which is magnetized by the inner and outer diameter one-pole magnetization method, which is one of the special magnetization methods, and the inner diameter and the outer diameter each consist of a single pole as shown in FIG. It is a key element of the present invention to use a radial magnet (1) in which the inside and outside diameters are magnetized to a single pole to lubricate each other, and using the radial magnet (1), the sealing effect is much higher than that of conventional magnetic fluid sealing devices. In order to construct a magnetic fluid sealing device and to prevent the leakage of the lubricant of the bearing, the bearing is sealed to prevent the leakage of lubricant and the sealing effect of the shaft can be achieved, and to apply the rotating shaft sealing device of no load by applying to the rotating shaft as shown in FIG. It is.
    [26] As shown in FIGS. 3 and 4, the ring-shaped magnets are formed of magnetic poles having the same inner diameter, and the outer diameter forms a magnetic pole opposite to the inner diameter.
    [27] Although the radial magnet (1) used in the present invention has been considered impossible until recently, special magnetization methods have been developed according to the development of magnet manufacturing technology, among which radial magnets have been developed as the inner and outer diameter one-pole magnetization methods were developed. (1) was made.
    [28] It is not easy to make a radial magnetic (1) having a high magnetic strength such as ND magnets due to the magnetic pole arrangement characteristic of the radial magnetic (1), which is a main part of the present invention, but some orders are produced in Japan, and the form of ferrite or bond magnet is also domestic. Some orders are produced and marketed, and the method of increasing the magnetic field strength is currently being studied, the use of a high magnetic field radial magnetic (1) can further increase the sealing effect of the present invention.
    [1] 1: Overview
    [2] 2: Radial magnet
    [3] 3: Magnet assembly drawing 3D
    [4] [Figure 4]: magnet assembly diagram
    [5] 5: Cross section
    [6] 6: Side view
    [7] 7: Cross section cut by "A"-"A"
    [8] 8 is a cross-sectional view of the outer housing
    [9] 9 is a side view of the outer housing
    [10] 10: Internal housing cross section
    [11] 11 is a side view of the inner housing
    [12] 12 is a detailed view of the inner housing
    [13] 13 is an exploded view cross section of a component
    [14] 14: Stimulation layout
    [15] 15: Inner and outer ring
    [16] Fig. 16: Example): Application to sealing device (sealing device cross section)
    [17] 1: radial magnet, 2: outer magnet, 3: inner magnet, 4: magnetic fluid,
    [18] 5: outer housing, 6: inner housing, 7: outer ring, 8: outer sealing,
    [19] 9 inner ring, 10 inner seal, 11 bearing ball, 12 sealing device outer housing,
    [20] 13: rotary shaft, 14 rotary shaft sealing, 15 sealing device inner housing.
    [29] The present invention is a magnetic fluid sealing device and a bearing sealing device using an internal and external monopolar magnet magnet, and the radial magnet (1) having the internal and external diameters magnetized by the internal and external diameter monopolar magnet method, which is one of the special magnetization methods, respectively. It is one of the core elements of the present invention to use the radial magnet (1) in which the inner and outer diameters are magnetized to a single pole by the sealing device or the lubricating action of the rotary motion.
    [30] As shown in (FIG. 3) and (FIG. 4), the radial magnet, which is a ring-shaped magnet, consists of magnetic poles having the same inner diameter, and the outer diameter forms a magnetic pole opposite to the inner diameter.
    [31] As shown in FIG. 2, the inner magnet 3 is inserted into the center of the outer magnet 2 and the two radials are used as shown in FIG. By injecting the magnetic fluid 4 between the magnets 1, the magnetic fluid 4 is also magnetically induced by the strong magnetic force generated between the two magnets to seal the space between the magnets.
    [32] The present invention constitutes a sealing device for a bearing that can prevent the leakage of lubricant in the bearing as a practical example in configuring the sealing device using the radial magnet (1) and the magnetic fluid (4), as shown in Figure 13 It is possible to configure a bearing sealing device that does not take a load on the rotating shaft frictional force or rotational motion.
    [33] The sealing device of the present invention can be used semi-permanently as long as a severe external impact is not applied.
    [34] In FIG. 6 of the present invention, the inner magnet 3 is inserted into the center of the outer magnet 2, and the magnetic fluid 4 is inserted between the two magnets.
    [35] The configuration of FIG. 6 is a radial magnet in which a bearing ball 11 is inserted into an outer housing 5 and an inner housing 6 constituting a bearing and magnetized in one pole on each of the inner and outer sides of the ball. 1) is mounted as shown in (FIG. 6), and the inner housing 6, in which the radial magnet 1 is mounted, and the outer ring 5, the sealing ring, that is, the inner seal 10 and the outer seal 8, It is inserted to seal the magnet and the housing, and the binding ring, that is, the inner ring 9 and the outer ring 7 is provided with the inner housing 6 and the outer housing 5 to prevent the magnet from being detached and to easily replace the magnet when broken. It is inserted into the groove processed in the) to bind the magnet to the housing, and as shown in (Fig. 15), the inner ring and the outer ring are partially cut and have some elasticity, so there are holes at both ends of the cutting surface and have some elasticity. Therefore, it is easy to put the special tool in the hole and open or retract it on both sides. It is the mounting and removal.
    [36] After the assembly of the inner and outer housings is completed, the magnetic fluid 4 is injected between the magnets on either side, and the lubricant is injected into the bearing ball 11 into the space of the magnet on the opposite side. Injecting (4) makes it possible to construct a bearing free of lubricant leakage.
    [37] 16 is an application as a sealing device, the principle of the bearing sealing device of the present invention is in the same manner as in Figure 1 can be used for the purpose of sealing the rotating shaft and the configuration is as follows.
    [38] When the sealing apparatus inner housing 15 and the rotating shaft sealing 14 are coupled to the rotating shaft 13 of FIG. 16, the sealing shaft is firmly sealed between the rotating shaft 13 and the sealing apparatus inner housing 15, and the sealing apparatus is When the outer housing 12 is assembled so that the sealing device inner housing 15 is at the center, and the magnetic fluid 4 is injected, the magnetic fluid sealing device of the rotating shaft is formed.
    [39] The present invention is a magnetic fluid sealing device and a bearing sealing device using an inner and outer monopolar magnet magnet as shown in (Fig. 6) and the magnetic poles facing each other using a radial magnet (1) magnetized in one pole inside and outside, respectively. As a magnetic fluid sealing bearing that can maximize magnetic force, it consists of an execution device that is much more capable of sealing than conventional sealing devices or bearings using magnetic fluid, so that the bearing has no rotational force, no friction, and no lubricant leakage. When the sealing device is configured and used in the water, food industry, repair, and where it is difficult to refuel, it becomes a more effective bearing sealing device than the existing sealing device.
    [40] The present invention seals the inside and the outside of the bearing with a magnetic fluid (4) to prevent the leakage of lubricant and the ingress of foreign matter into the interior, thereby increasing the rotational force of the bearing and the leakage of the lubricant used to reduce the friction between the ball and the housing. Due to the contamination of the peripheral equipment and the lack of lubricants, the friction coefficient is increased to prevent wear of the ball and the housing, thereby reducing the clean operating environment and reducing the number of refilling of lubricants.
    [41] In particular, when used in the food industry or aquatic facilities, it is possible to prevent the contamination of lubricants and economical and hygienic effects can be obtained because there is no need to construct an expensive complex sealing device.
    [42] In addition, it is effective to use it where it is difficult to re-inject lubricant such as nuclear power, ship, underwater installation equipment, automobile, etc.
    [43] Application as a sealing device of the present invention can be configured as (Fig. 16) and in the case of (Fig. 16) can be sealed without a load on the rotating shaft and the magnet is a radial magnet (1) to use than other magnetic fluid sealing device Possible pressure is much higher.
    [44] This can improve the problem of low allowable pressure, which is a disadvantage of the conventional magnetic fluid sealing device, and thus can extend the application range.
    [45] Although the radial magnet (1) used in the present invention has been considered impossible until recently, special magnetization methods have been developed according to the development of magnet technology. Among them, the radial magnet (1) has been developed. ) Was made.
    [46] It is not easy to make a radial magnet (1) having a high magnetic strength such as ND magnet due to the magnetic pole arrangement characteristic of the radial magnet (1), which is a main part of the present invention, but some orders are produced in Japan, and the form of ferrite or bond magnet is also in Korea. Some orders are produced and marketed, and the method of increasing the magnetic field strength is currently being studied, the use of a high magnetic field radial magnetic (1) can further increase the sealing effect of the present invention.
    [47] Therefore, the present invention has a technical effect of constituting the no-load sealing device using the radial magnet (1), increasing the utilization of the radial magnet, and expanding the utilization method of the magnetic fluid to give vitality to the field of magnetic materials that are behind the foreign countries. .
    权利要求:
    Claims (2)
    [1" claim-type="Currently amended] In constructing a magnetic fluid sealing device used to be mounted on a rotating shaft of a rotating device, a cylindrical magnet having a cylindrical shape in the center, that is, a radial magnet magnetized in one pole of each of the inner and outer surfaces thereof is used. A magnetic fluid sealing device configured to insert a magnetic fluid between two magnetic poles to form a magnetic fluid sealing device by inserting a radial magnet mounted on the outside of the inner housing to a center of the radial magnet mounted on the magnetic pole.
    [2" claim-type="Currently amended] A non-leak bearing sealing device in which the magnetic fluid sealing device of claim 1 is applied to left and right sides of a bearing.
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    同族专利:
    公开号 | 公开日
    KR100576105B1|2006-05-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2004-01-08|Application filed by (주)다라기술
    2004-01-08|Priority to KR1020040001866A
    2004-04-28|Publication of KR20040034622A
    2006-05-10|Application granted
    2006-05-10|Publication of KR100576105B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1020040001866A|KR100576105B1|2004-01-08|2004-01-08|A sealing method of motor shafts with magnetic fluids between the motor shaft and the radial magnet with a single pole, and a sealing method of a bearing housing with magnetic fluids between the bearing center and the radial magnet with a single pole.|
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