Magnetic field regulation and control type fluid sealing device

Abstract

The utility model relates to the technical field of fluid sealing devices, and discloses a magnetic field regulation and control type fluid sealing device which comprises a shaft sleeve, a shaft inserted in the shaft sleeve and a bearing in interference fit with the shaft and the shaft sleeve. Stainless steel jackets are further arranged at the two ends of the bearing and located between the shaft sleeve and the shaft, rubber bushings are fixedly embedded in the outer rings of the stainless steel jackets, and two rubidium magnets arranged at intervals are fixedly arranged in the stainless steel jackets. Sealing and dust prevention are carried out through the magnetic fluid, and the phenomenon that a traditional rubber sealing ring is prone to breakage, heating and failure is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid sealing devices, in particular to a magnetic field regulating type fluid sealing device. Background Art

[0002] Traditional rubber sealing rings for dustproof sealing are greatly affected by the external environment and require good lubrication to maintain high sealing and low friction rotation. They require regular maintenance, which is time-consuming and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to overcome the above problems, a magnetic field control type fluid sealing device is provided, which solves the above problems.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] A magnetic field control type fluid sealing device comprises a shaft sleeve and a shaft inserted in the shaft sleeve, and a bearing with an interference fit with the shaft and the shaft sleeve. A stainless steel jacket with a rubber bushing fixedly embedded in the outer ring is provided at both ends of the bearing between the shaft sleeve and the shaft. Two intervally arranged rubidium magnets are fixedly provided in the stainless steel jacket. A magnetic fluid is provided in the rubidium magnet. Under the magnetic attraction of the rubidium magnet, the magnetic fluid is in contact with the stainless steel jacket and the shaft at the same time under the action of tension, thereby achieving sealing.

[0006] Preferably, the magnetic forces of two adjacent neodymium magnets are the same.

[0007] Preferably, the gap between two adjacent neodymium magnets is one tenth of the diameter of the matching shaft.

[0008] Preferably, the gap between the neodymium magnet and the shaft is no more than three millimeters.

[0009] Preferably, the magnetic poles of two adjacent neodymium magnets are the same.

[0010] Preferably, the volume of the magnetic fluid is larger than the volume between two adjacent neodymium magnets.

[0011] The advantages and positive effects of the utility model are: the dustproof sealing is performed by magnetic fluid, and the phenomenon that the traditional rubber sealing ring is easy to break, heat and fail is effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0014] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0015] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0016] like Figure 1 As shown, a magnetic field control type fluid sealing device described in the utility model includes a sleeve 10 and a shaft 12 inserted in the sleeve 10, and a bearing 11 with an interference fit with the shaft 12 and the sleeve 10, and a stainless steel jacket 14 with a rubber bushing 13 fixedly embedded in the outer ring is provided at both ends of the bearing 11 between the sleeve 10 and the shaft 12, two intervally arranged rubidium magnets 15 are fixedly provided in the stainless steel jacket 14, and a magnetic fluid 16 is provided in the rubidium magnet 15, and under the magnetic attraction of the rubidium magnet 15, the magnetic fluid 16 is in contact with the stainless steel jacket 14 and the shaft 12 at the same time under the action of tension to achieve sealing.

[0017] Preferably, the magnetic forces of two adjacent neodymium magnets 15 are the same.

[0018] Preferably, the gap between two adjacent neodymium magnets 15 is one tenth of the diameter of the matching shaft 12 .

[0019] Preferably, the gap between the neodymium magnet 15 and the shaft 12 is no more than three millimeters.

[0020] Preferably, the magnetic poles of two adjacent neodymium magnets 15 are the same.

[0021] Preferably, the volume of the magnetic fluid 16 is larger than the volume between two adjacent neodymium magnets 15 .

[0022] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A magnetic field control type fluid sealing device, characterized in that: The invention comprises a shaft sleeve (10), a shaft (12) inserted in the shaft sleeve (10), and a bearing (11) which is interference fit with the shaft (12) and the shaft sleeve (10); a stainless steel jacket (14) with a rubber bushing (13) fixedly embedded in the outer ring is provided at both ends of the bearing (11) between the shaft sleeve (10) and the shaft (12); two interval-arranged rubidium magnets (15) are fixedly provided in the stainless steel jacket (14); a magnetic fluid (16) is provided in the rubidium magnet (15); under the magnetic attraction of the rubidium magnet (15), the magnetic fluid (16) is in contact with the stainless steel jacket (14) and the shaft (12) at the same time under the action of tension, thereby achieving sealing.

2. A magnetic field control type fluid sealing device according to claim 1, characterized in that: The magnetic forces of the two adjacent neodymium magnets (15) are the same.

3. A magnetic field control type fluid sealing device according to claim 2, characterized in that: The gap between two adjacent neodymium magnets (15) is one tenth of the diameter of the matching shaft (12).

4. A magnetic field control type fluid sealing device according to claim 3, characterized in that: The gap between the neodymium magnet (15) and the shaft (12) is no greater than three millimeters.

5. A magnetic field control type fluid sealing device according to claim 4, characterized in that: The magnetic poles of two adjacent neodymium magnets (15) are the same.

6. A magnetic field control type fluid sealing device according to claim 5, characterized in that: The volume of the magnetic fluid (16) is greater than the volume between two adjacent nepheline magnets (15).

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