A quick-insertion magnetic fluid hydraulic sealing ring

Abstract

The invention discloses a quick-insertion magnetic fluid hydraulic sealing ring, comprising: an inner ring, on which magnetic fluid is wrapped; an outer ring, which cooperates with the inner ring to form a containing cavity for placing the magnetic fluid; limiting rings, which are arranged at both ends of the inner ring to position the outer ring; and a booster, which rotates with the inner ring to form high-pressure areas at both ends of the containing cavity. The invention can avoid leakage of magnetic fluid and ensure the service life of the sealing device.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical engineering seals, and in particular relates to a quick-insertion magnetic fluid dynamic seal ring. Background Art

[0002] Magnetic fluid seal is a new type of non-contact seal. It uses the characteristics of magnetic fluid that has both fluidity and magnetic field responsiveness. By forming a magnetic field gradient in the sealing gap, the magnetic fluid forms a number of "O-type" liquid sealing rings in the sealing gap under the combined action of pressure and magnetic field force, achieving a sealing pressure-resistant effect, with the advantages of "zero leakage", long life and high reliability.

[0003] The magnetic fluid sealing device includes two left and right pole shoes and a permanent magnet arranged between the two. The pole shoes are grooved to form pole teeth, and the magnetic fluid is adsorbed on the pole teeth to form a seal. After long-term use, the device is affected by external factors such as weakening of magnetism, and the magnetic fluid is prone to leakage, which leads to failure of the sealing device and affects the service life of the device. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a quick-insertion magnetic fluid hydraulic sealing ring.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a quick-insertion magnetic fluid hydraulic sealing ring, comprising: an inner ring, on which magnetic fluid is wrapped; an outer ring, which cooperates with the inner ring to form a containing cavity for placing the magnetic fluid; a limit ring, which is arranged at both ends of the inner ring to position the outer ring; and a booster, which rotates with the inner ring to form a high-pressure area at both ends of the containing cavity.

[0006] Furthermore, a wind shield is provided on the outer ring.

[0007] Furthermore, a plurality of blocks are provided on the inner ring, and the block rings are evenly arranged in the accommodating cavity.

[0008] Furthermore, the side walls of the retaining ring disposed at both ends of the accommodating cavity are in contact with the side walls of the limiting ring.

[0009] Furthermore, a cavity is provided on the limiting ring, and the booster is a centrifugal fan blade arranged in the cavity.

[0010] Furthermore, an air inlet is provided on the side wall of the cavity.

[0011] Furthermore, a mounting groove is provided on the outer ring, and a permanent magnet is provided in the mounting groove.

[0012] Furthermore, the outer ring is provided with a plurality of first ring grooves, and the first sealing rings are provided in the first ring grooves; the inner ring is provided with a plurality of second ring grooves, and the second sealing rings are provided in the second ring grooves.

[0013] Furthermore, the first sealing ring and the second sealing ring are both fluororubber sealing rings.

[0014] Furthermore, the outer ring includes an upper ring and a lower ring, and the upper ring and the lower ring are connected by a buckle.

[0015] The invention has the following advantages: providing a quick-insertion magnetic fluid pneumatic sealing ring which can avoid magnetic fluid leakage and ensure the service life of a sealing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0018] In the attached picture:

[0019] Figure 1 A schematic diagram of the structure of a quick-insertable magnetic fluid hydraulic sealing ring according to an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the use of the quick-insertion magnetic fluid hydraulic sealing ring;

[0021] Figure 3 It is a schematic diagram of the centrifugal blade of the above-mentioned quick-insertion magnetic fluid hydraulic sealing ring;

[0022] Figure 4 It is an enlarged view of the centrifugal blade of the quick-insertion magnetic fluid hydraulic sealing ring;

[0023] Figure 5 It is a cross-sectional view of the above-mentioned quick-insertion magnetic fluid hydraulic sealing ring.

[0024] 100, outer ring; 100a, upper ring; 100b, lower ring; 101, first sealing ring; 102, permanent magnet; 103, wind shield ring;

[0025] 200, inner ring; 201, retaining ring; 202, second sealing ring; 203, centrifugal fan blade. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0027] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0028] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0030] The names of the messages or information exchanged between multiple devices in the embodiments of the present disclosure are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0031] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0032] like Figure 1-3 The quick-insertable magnetic fluid hydraulic sealing ring shown includes: an inner ring 200, on which the magnetic fluid is wrapped; an outer ring 100, which cooperates with the inner ring 200 to form a receiving cavity for placing the magnetic fluid; a limit ring, which is arranged at both ends of the inner ring 200 to position the outer ring 100; and a booster, which rotates with the inner ring 200 to form a high-pressure area at both ends of the receiving cavity.

[0033] Furthermore, a wind shield ring 103 is provided on the outer ring 100 .

[0034] Furthermore, a plurality of stoppers are provided on the inner ring 200, and the stop ring 201 is evenly arranged in the accommodating cavity.

[0035] Furthermore, the side walls of the retaining ring 201 disposed at both ends of the accommodating cavity are in contact with the side walls of the limiting ring.

[0036] Furthermore, a cavity is provided on the limiting ring, and the booster is a centrifugal blade 203 provided in the cavity.

[0037] Furthermore, an air inlet is provided on the side wall of the cavity.

[0038] Furthermore, a mounting groove is provided on the outer ring 100, and a permanent magnet 102 is provided in the mounting groove.

[0039] like Figure 4-5 As shown, the outer ring 100 is provided with a plurality of first ring grooves, and the first sealing ring 101 is arranged in the first ring groove; the inner ring 200 is provided with a plurality of second ring grooves, and the second sealing ring 202 is arranged in the second ring groove, and the first sealing ring 101 and the second sealing ring 202 are both fluororubber sealing rings; the number of the first ring grooves and the second ring grooves can be designed according to actual needs, the first sealing ring 101 is in contact with the shell, and the second sealing ring 202 is in contact with the shaft body, and the arrangement of the first sealing ring 101 and the second sealing ring 202 ensures the sealing of the connection between the sealing structure and each component.

[0040] Furthermore, the outer ring 100 includes an upper ring 100a and a lower ring 100b, which are connected by a snap fastener, and corresponding grooves and protrusions are provided at the connection between the upper ring 100a and the lower ring 100b to ensure the sealing effect of the connection after the upper ring 100a and the lower ring 100b are connected.

[0041] After the shaft body is inserted into the inner ring 200, the rotation of the shaft body drives the inner ring 200 to rotate together, and the inner ring 200 drives the centrifugal blades 203 to rotate. The air is sucked into the air from the air inlet, and the air is sent out from the side wall of the cavity under the action of the centrifugal blades 203. The airflow flows in the direction of the wind shield ring 103. Since the airflow continuously flows toward the wind shield ring 103, a high-pressure belt is formed at the wind shield ring 103. Part of the airflow blocked by the wind shield ring 103 flows out of the sealing device, and the other part of the airflow flows into the accommodating cavity. The accommodating cavity is filled with magnetic fluid, and the gas cannot enter. The airflow forms a high-pressure belt at both ends of the accommodating cavity, which cooperates with the magnetic field to seal the magnetic fluid in the accommodating cavity to prevent leakage of the magnetic fluid; when the airflow flowing out of the sealing device contacts the wind shield, it takes away part of the heat on the outer ring 100, cools the outer ring 100, and prevents the temperature increase of the outer ring 100 from affecting the magnetism of the permanent magnet 102 and the magnetic fluid.

[0042] Specifically, the outer ring 100 is made of a heat-conducting material, and the inner ring 200 is made of a heat-insulating material, so as to reduce the change of temperature on the magnetic properties of the sealing device, and at the same time transfer the heat on the magnetic fluid and the permanent magnet 102 to the outer ring 100 and the wind shield ring, and use the airflow blown by the centrifugal fan blades 203 to discharge the heat on the magnetic fluid and the permanent magnet 102, thereby ensuring the stability of the sealing device.

[0043] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A quick-insertion magnetic fluid hydraulic sealing ring, comprising: an inner ring on which the magnetic fluid is wrapped; An outer ring, cooperating with the inner ring to form a receiving cavity for placing magnetic fluid; Limiting rings, arranged at both ends of the inner ring to position the outer ring; Features: Also includes: A booster, which rotates with the inner ring to form high-pressure areas at both ends of the accommodating cavity; The outer ring is provided with a wind shield ring; The limiting ring is provided with a cavity, and the booster is a centrifugal blade arranged in the cavity; The outer ring is provided with a mounting groove, and a permanent magnet is provided in the mounting groove; The outer ring comprises an upper ring and a lower ring, and the upper ring and the lower ring are connected by a buckle.

2. The quick-insertion magnetic fluid hydraulic sealing ring according to claim 1 is characterized in that: A plurality of retaining rings are arranged on the inner ring, and the retaining rings are evenly arranged in the accommodating cavity.

3. The quick-insertable magnetic fluid hydraulic sealing ring according to claim 2, characterized in that: The retaining ring side walls arranged at the two ends of the accommodating cavity are in contact with the limiting ring side walls.

4. The quick-insertable magnetic fluid hydraulic sealing ring according to claim 1, characterized in that: An air inlet is arranged on the side wall of the cavity.

5. The quick-insertable magnetic fluid hydraulic sealing ring according to claim 1, characterized in that: The outer ring is provided with a plurality of first ring grooves, in which first sealing rings are arranged; the inner ring is provided with a plurality of second ring grooves, in which second sealing rings are arranged.

6. The quick-insertable magnetic fluid hydraulic sealing ring according to claim 5, characterized in that: The first sealing ring and the second sealing ring are both fluorine rubber sealing rings.

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