Magnetofluid sealing element of tungsten-molybdenum alloy structure

Abstract

The utility model discloses a magnetofluid sealing element of tungsten molybdenum alloy structure, including shell structure, sealing butt joint cover and internal component structure, the surface of shell structure is sleeved with internal component structure, the surface of one end of shell structure is fixed butt joint with the sealing butt joint cover, and the sealing butt joint cover is fixed butt joint with the surface of the other end of shell structure. The shell structure comprises a sleeve shell, a mounting groove, a first threaded hole, a first penetrating hole, a fixing hole, a sealing butt joint groove and a sliding groove, and the sealing butt joint cover comprises a cover body, a sealing block, a butt joint sliding block, a second penetrating hole, a second threaded hole and a screw knob. By arranging the shell structure and the sealing butt joint cover, dismounting and mounting of the device are facilitated, screws needing tool mounting are replaced with screw knobs, manual dismounting can be conducted, the number of internal magnetic poles is increased by arranging an internal assembly structure, butt joint distribution is averagely conducted, and therefore the stability of the device and the upper limit of sealing pressure are improved.

Description

Technical Field

[0001] This utility model relates to the field of magnetic fluid sealing, and in particular to a magnetic fluid sealing component with a tungsten-molybdenum alloy structure. Background Technology

[0002] Magnetofluid sealing technology is developed based on magnetic fluid. When magnetic fluid is injected into the gap of a magnetic field, it can fill the entire gap, forming a "liquid O-ring". The function of the magnetic fluid sealing device is to transmit rotational motion to the sealed container, and it is often used for vacuum sealing.

[0003] Existing seals are not easy to disassemble quickly, and are mostly fixed with screws. At the same time, the internal magnetic pole design is small, which can easily cause local accumulation of magnetic fluid and low sealing pressure limit. Therefore, a magnetic fluid seal with a tungsten-molybdenum alloy structure is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a tungsten-molybdenum alloy structure magnetohydrodynamic seal, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tungsten-molybdenum alloy magnetic fluid seal includes an outer shell structure, a sealing mating cover, and an internal component structure. The internal component structure is fitted onto the surface of the outer shell structure, and the sealing mating cover is fixedly mated to one end of the outer shell structure. The outer shell structure includes a sleeve, a mounting groove, a threaded hole, a through hole, a fixing hole, a sealing mating groove, and a sliding groove. The sealing mating cover includes a cover body, a sealing block, a mating slider, a through hole, a threaded hole, and a screw knob.

[0007] Preferably, the housing has an installation groove inside, a threaded hole is fixedly formed on the surface of the housing, a through hole is fixedly formed on the surface of the housing, a fixing hole is fixedly formed on the surface of the housing, a sealing groove is fixedly formed on one end surface of the housing, and a sliding groove is fixedly formed on the surface of the housing.

[0008] Preferably, a sealing block is fixedly provided on the surface of the cover, a docking slider is fixedly provided on the inner surface of the cover, a through hole is fixedly provided on the surface of the cover, a threaded hole is fixedly provided on the surface of the cover, and a screw knob is spirally connected to the surface of the threaded hole.

[0009] Preferably, the internal component structure includes a rotating shaft, a bearing, a spacer, a magnetic pole piece, a magnet, a sealing ring, and a magnetic fluid. The rotating shaft is fitted with a bearing, a spacer, a magnetic pole piece, and a magnet. The magnetic pole piece is fitted with a sealing ring, and a magnetic fluid is disposed in the gap between the rotating shaft and the magnetic pole piece.

[0010] Preferably, the sealing block of the cover is fixedly connected to the sealing groove, the connecting slider is fixedly connected to the sliding groove, and the screw knob is fixedly connected to the screws in threaded hole one and threaded hole two. The bearing moves through through hole one and through hole two.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This utility model discloses a tungsten-molybdenum alloy magnetic fluid seal. By setting up a shell structure and a sealing docking cover, it facilitates the disassembly and installation of the device. The screws that require tools to install are replaced with screw knobs, which can be manually disassembled. It is installed on an arc surface, and a sealing block and docking slider are added at the docking point to improve sealing and stability. By setting up an internal component structure, the number of internal magnetic poles is increased and evenly distributed at the docking point, thereby improving the stability of the device and the upper limit of the sealing pressure. Attached Figure Description

[0013] Figure 1 This is an overall schematic diagram of a tungsten-molybdenum alloy structure magnetohydrodynamic sealing component according to the present invention;

[0014] Figure 2 This is a schematic diagram of the outer shell structure of a tungsten-molybdenum alloy magnetic fluid seal according to the present invention;

[0015] Figure 3 This is a schematic diagram of the outer shell structure of a tungsten-molybdenum alloy magnetic fluid seal according to the present invention;

[0016] Figure 4 This is a schematic diagram of the internal component structure of a tungsten-molybdenum alloy magnetohydrodynamic seal according to the present invention;

[0017] Figure 5 This is a schematic diagram of the internal component structure of a tungsten-molybdenum alloy magnetohydrodynamic seal according to the present invention;

[0018] Figure 6 This is a schematic diagram of the internal component structure of a tungsten-molybdenum alloy magnetohydrodynamic seal according to the present invention;

[0019] In the diagram: 1. Outer shell structure; 101. Shell; 102. Mounting groove; 103. Threaded hole one; 104. Through hole one; 105. Fixing hole; 106. Sealing docking groove; 107. Slide groove; 2. Sealing docking cover; 201. Cover body; 202. Sealing block; 203. Dock slider; 204. Through hole two; 205. Threaded hole two; 206. Screw knob; 3. Internal component structure; 301. Rotating shaft; 302. Bearing; 303. Spacer; 304. Magnetic pole piece; 305. Magnet; 306. Sealing ring; 307. Magnetorheological fluid. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figure 1-6 As shown, a tungsten-molybdenum alloy magnetic fluid seal includes an outer shell structure 1, a sealing mating cover 2, and an internal component structure 3. The surface of the outer shell structure 1 is fitted with the internal component structure 3, and one end of the outer shell structure 1 is fixedly mated with the sealing mating cover 2. The outer shell structure 1 includes a sleeve 101, a mounting groove 102, a threaded hole 103, a through hole 104, a fixing hole 105, a sealing mating groove 106, and a sliding groove 107. The sealing mating cover 2 includes a cover body 201, a sealing block 202, a mating slider 203, a through hole 204, a threaded hole 205, and a screw knob 206. The outer shell structure 1 and the sealing mating cover 2 facilitate docking and disassembly, while the internal component structure 3 ensures the stability of the device.

[0022] Furthermore, the housing 101 has an internal mounting groove 102, a threaded hole 103, a through hole 104, and a fixing hole 105. A sealing groove 106 and a sliding groove 107 are also fixedly formed on one end of the housing 101. The mounting groove 102 is used to fit the internal component structure 3. The threaded hole 103 is aligned with the internal component structure 3 and fixedly connected using screws and knobs 206.

[0023] Furthermore, a sealing block 202 is fixedly provided on the surface of the cover 201, and a docking slider 203 is fixedly provided on the inner surface of the cover 201. A through hole 204 is fixedly provided on the surface of the cover 201, and a threaded hole 205 is fixedly provided on the surface of the cover 201. A screw knob 206 is screwed onto the surface of the threaded hole 205. The sealing block 202 is docked and fixed with the sealing docking groove 106, the docking slider 203 is docked with the sliding groove 107, and the threaded hole 205 is used for fixing.

[0024] Furthermore, the internal component structure 3 includes a rotating shaft 301, a bearing 302, a spacer 303, a magnetic pole piece 304, a magnet 305, a sealing ring 306, and a magnetic fluid 307. The bearing 302, spacer 303, magnetic pole piece 304, and magnet 305 are all fitted onto the surface of the rotating shaft 301. The sealing ring 306 is fitted onto the surface of the magnetic pole piece 304. A magnetic fluid 307 is disposed in the gap between the rotating shaft 301 and the magnetic pole piece 304. The bearing 302 is fitted onto both ends of the rotating shaft 301 to maintain stable rotation. The magnetic pole piece 304, magnet 305, and sealing ring 306 are sequentially fitted onto the bearing 302 inwards, with a uniform and symmetrical distribution. The magnetic fluid 307 is annularly fitted onto the surface of the rotating shaft 301 to form a seal.

[0025] Furthermore, the sealing block 202 of the cover 201 is fixedly connected to the sealing mating groove 106, the mating slider 203 is fixedly connected to the sliding groove 107, and the screw knob 206 is fixedly connected to the threaded hole 103 and the threaded hole 205. The bearing 302 moves through the through hole 104 and the through hole 204; the entire device is easy to install and disassemble, and improves the stability and pressure limit of the device.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A magnetohydrodynamic seal with a tungsten-molybdenum alloy structure, characterized in that: The device includes an outer shell structure (1), a sealing docking cover (2), and an internal component structure (3). The surface of the outer shell structure (1) is fitted with the internal component structure (3). One end of the outer shell structure (1) is fixedly connected to the sealing docking cover (2). The outer shell structure (1) includes a sleeve (101), a mounting groove (102), a threaded hole (103), a through hole (104), a fixing hole (105), a sealing docking groove (106), and a sliding groove (107). The sealing docking cover (2) includes a cover body (201), a sealing block (202), a docking slider (203), a through hole (204), a threaded hole (205), and a screw knob (206).

2. The magnetohydrodynamic seal with a tungsten-molybdenum alloy structure according to claim 1, characterized in that: The housing (101) has an installation groove (102) inside, a threaded hole (103) is fixedly opened on the surface of the housing (101), a through hole (104) is fixedly opened on the surface of the housing (101), a fixing hole (105) is fixedly opened on the surface of the housing (101), a sealing mating groove (106) is fixedly opened on one end surface of the housing (101), and a sliding groove (107) is fixedly opened on the surface of the housing (101).

3. The magnetohydrodynamic seal with a tungsten-molybdenum alloy structure according to claim 2, characterized in that: A sealing block (202) is fixedly provided on the surface of the cover (201), a docking slider (203) is fixedly provided on the inner surface of the cover (201), a through hole (204) is fixedly opened on the surface of the cover (201), a threaded hole (205) is fixedly opened on the surface of the cover (201), and a screw knob (206) is spirally connected to the surface of the threaded hole (205).

4. The magnetohydrodynamic seal with a tungsten-molybdenum alloy structure according to claim 3, characterized in that: The internal component structure (3) includes a rotating shaft (301), a bearing (302), a spacer (303), a magnetic pole piece (304), a magnet (305), a sealing ring (306), and a magnetic fluid (307). The rotating shaft (301) is fitted with a bearing (302), a spacer (303), a magnetic pole piece (304), a magnet (305), and a sealing ring (306). A magnetic fluid (307) is provided in the gap between the rotating shaft (301) and the magnetic pole piece (304).

5. A tungsten-molybdenum alloy structure magnetic fluid seal according to claim 4, characterized in that: The sealing block (202) of the cover (201) is fixedly connected to the sealing docking groove (106), the docking slider (203) is fixedly connected to the sliding groove (107), the screw knob (206) is fixedly connected to the threaded hole one (103) and the threaded hole two (205), and the bearing (302) moves through the through hole one (104) and the through hole two (204).

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