Magnetic fluid sealing device with water cooling structure

Abstract

The utility model discloses a magnetofluid sealing device with a water cooling structure, which relates to the technical field of magnetofluid sealing devices and comprises a magnetofluid sealing body, the outer side of the magnetofluid sealing body is connected with a water cooling mechanism, and the outer side of the magnetofluid sealing body is provided with a protection mechanism. The water cooling mechanism comprises a fixing plate fixed to the outer side wall of the magnetofluid sealing body, a mounting box is fixedly connected to the right side of the fixing plate, semiconductor refrigeration blocks evenly penetrate through and are fixedly connected to the top of the mounting box, and supporting rods are fixedly connected to the four corners of the top of the mounting box. The top end of the supporting rod is fixedly connected with a mounting frame; according to the magnetofluid sealing device with the water cooling structure, through the arrangement of the water cooling mechanism, the cooling effect is improved, magnet demagnetization and magnetofluid evaporation caused by temperature rise are avoided, magnetic saturation intensity reduction is prevented, sealing pressure resistance reduction is avoided, and the sealing performance of the device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of magnetic fluid sealing devices, specifically a magnetic fluid sealing device with a water-cooled 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] Chinese patent CN207261663U discloses a symmetrical magnetic fluid sealing device, including an end cap, a housing, and a magnetic fluid. The housing has an end cap on one side, an O-ring seal inside the end cap, a magnetic shielding layer inside the housing, and a shaft inside the magnetic shielding layer. Vacuum sides are provided on both sides of the shaft. This application uses a permanent magnet at the upper end of the shaft to concentrate the magnetic fluid in the gap under the magnetic field generated by the magnet, forming an so-called "O" ring to block the gap channel and achieve sealing. Isolation magnetic rings are provided on both sides of the permanent magnet for isolation. The upper and lower pole shoes can achieve a good linear distribution of the magnetic field.

[0004] However, the aforementioned patent lacks a cooling device, and the increase in temperature will cause the magnet to demagnetize and the magnetic fluid to evaporate, resulting in a decrease in magnetic saturation strength, which in turn will reduce the pressure resistance of the seal and affect the overall sealing performance of the device. Therefore, we propose a magnetic fluid sealing device with a water-cooling structure. Utility Model Content

[0005] The purpose of this invention is to provide a magnetic fluid sealing device with a water-cooled structure to solve the problem in the prior art that the lack of a cooling device leads to magnet demagnetization and evaporation of the magnetic fluid due to temperature rise, resulting in a decrease in magnetic saturation strength and consequently a decrease in the pressure resistance of the seal, thus affecting the overall sealing performance of the device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a magnetic fluid sealing device with a water-cooled structure, comprising a magnetic fluid sealing body, a water-cooling mechanism connected to the outside of the magnetic fluid sealing body, and a protective mechanism provided on the outside of the magnetic fluid sealing body;

[0007] The water-cooling mechanism includes a fixing plate fixed to the outer wall of the magnetic fluid sealing body. A mounting box is fixedly connected to the right side of the fixing plate. A semiconductor cooling block is uniformly and fixedly connected through the top of the mounting box. Support rods are fixedly connected to the four corners of the top of the mounting box. A mounting bracket is fixedly connected to the top of the support rod. A cooling fan is uniformly and fixedly connected to the bottom of the mounting bracket. A guide pipe is fixedly connected to the outer wall of the magnetic fluid sealing body. A pump is fixedly connected to the rear right side of the mounting box. A water inlet pipe is fixedly connected to the inlet end of the pump.

[0008] Preferably, the guide pipe has a spiral structure, and the inlet end of the guide pipe is fixedly connected to the outlet end of the pump to facilitate the pump's delivery of cooling water.

[0009] Preferably, the outlet end of the guide pipe passes through the rear left side of the mounting box, and the end of the water inlet pipe passes through and is fixedly connected to the rear right side of the mounting box, so as to facilitate the circulation of cooling water.

[0010] Preferably, the cooling fan corresponds to the top of the semiconductor cooling block, which facilitates heat dissipation from the hot end of the semiconductor cooling block.

[0011] Preferably, the protective mechanism includes connecting blocks symmetrically and fixedly connected to the left side of the outer wall of the magnetic fluid sealing body. An installation cavity is formed on the opposite sides of the two connecting blocks. A connecting plate is slidably connected inside the installation cavity. A locking block is fixedly connected on the opposite sides of the two connecting plates. A pull rod is fixedly connected to the middle of the mutually distant sides of the two connecting plates. A connecting spring is sleeved on the outer wall of the pull rod. A protective cover is sleeved on the outer side of the magnetic fluid sealing body. The outer wall of the protective cover is symmetrically provided with locking grooves.

[0012] Preferably, the connecting plate is slidably connected to the inside of the mounting cavity, and the outer side wall of the connecting plate is in contact with the inner side wall of the mounting cavity to limit the connection plate and make the connection plate move stably. The right side of the locking block is provided with an inclined surface to facilitate the squeezing of the locking block.

[0013] Preferably, the pull rod passes through one side of the connecting block, and the pull rod is slidably connected to the connecting block, which facilitates the pull rod to drive the connecting plate to move.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this application, a water-cooling mechanism is set up to pump the cooling water inside the mounting box into the guide pipe through the inlet pipe, and then back into the mounting box. The guide pipe cools the magnetic fluid sealing body, and the semiconductor cooling block cools the cooling water inside the mounting box. This prevents the cooling water from overheating, improves the cooling effect, prevents the magnet from demagnetizing and the magnetic fluid from evaporating due to temperature rise, prevents the magnetic saturation strength from decreasing, prevents the pressure resistance of the seal from decreasing, and improves the sealing performance of the device.

[0016] 2. In this application, the protective mechanism places the protective cover outside the magnetic fluid sealing body, with the guide tube inside the protective cover. This causes the protective cover to press against the locking block, which in turn moves the connecting plate and presses against the connecting spring. When the locking block aligns with the slot, the connecting spring resets the connecting plate, causing the locking block to reset and embed itself in the slot, thus fixing the protective cover. This protects the guide tube and the magnetic fluid sealing body, preventing damage from external impacts and improving the device's protective performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the semiconductor cooling block installation structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the water inlet pipe installation structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the connecting spring mounting structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the card slot structure of this utility model.

[0022] The following numbers are labeled in the diagram: 100, Magnetohydrodynamic sealing body; 200, Water cooling mechanism; 210, Fixing plate; 220, Mounting box; 230, Semiconductor cooling block; 240, Support rod; 250, Mounting bracket; 260, Cooling fan; 270, Guide pipe; 280, Pump; 290, Inlet pipe; 300, Protective mechanism; 310, Connecting block; 320, Mounting cavity; 330, Connecting plate; 340, Locking block; 350, Pull rod; 360, Connecting spring; 370, Protective cover; 380, Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Figures 1-5 As shown, the present invention provides a technical solution for a magnetic fluid sealing device with a water-cooled structure, including a magnetic fluid sealing body 100, a water-cooling mechanism 200 connected to the outside of the magnetic fluid sealing body 100, and a protective mechanism 300 provided on the outside of the magnetic fluid sealing body 100.

[0025] Please refer to it again. Figure 2 and Figure 3 The water-cooling mechanism 200 includes a fixing plate 210 fixed to the outer wall of the magnetic fluid sealing body 100. A mounting box 220 is fixedly connected to the right side of the fixing plate 210. A semiconductor cooling block 230 is uniformly and fixedly connected through the top of the mounting box 220. Support rods 240 are fixedly connected to the four corners of the top of the mounting box 220. A mounting bracket 250 is fixedly connected to the top of the support rod 240. A cooling fan 260 is uniformly and fixedly connected to the bottom of the mounting bracket 250. A guide pipe 270 is fixedly connected to the outer wall of the magnetic fluid sealing body 100. A pump 280 is fixedly connected to the rear right side of the mounting box 220. A water inlet pipe 290 is fixedly connected to the inlet end of the pump 280. The guide pipe 270 has a spiral structure, and its inlet end is fixedly connected to the outlet end of the pump 280. The outlet end of the 0 passes through the rear left side of the mounting box 220, and the end of the water inlet pipe 290 passes through and is fixedly connected to the rear right side of the mounting box 220; the cooling fan 260 corresponds to the top of the semiconductor cooling block 230; through the water cooling mechanism 200, the pump 280 starts, and the cooling water inside the mounting box 220 is transported into the guide pipe 270 through the water inlet pipe 290, and then flows back to the mounting box 220. The guide pipe 270 cools the magnetic fluid sealing body 100, and at the same time, the semiconductor cooling block 230 cools the cooling water inside the mounting box 220, so as to avoid the cooling water temperature from overheating, improve the cooling effect, avoid the magnet demagnetization and evaporation of the magnetic fluid due to temperature rise, prevent the magnetic saturation strength from decreasing, avoid the pressure resistance of the seal from decreasing, and improve the sealing performance of the device.

[0026] Please refer to it again. Figure 4 and Figure 5The protective mechanism 300 includes connecting blocks 310 symmetrically fixedly connected to the left side of the outer wall of the magnetic fluid sealing body 100. Mounting cavities 320 are formed on opposite sides of the two connecting blocks 310. Connecting plates 330 are slidably connected inside the mounting cavities 320. Locking blocks 340 are fixedly connected to opposite sides of the two connecting plates 330. A pull rod 350 is fixedly connected to the middle of the two opposite sides of the two connecting plates 330. A connecting spring 360 is sleeved on the outer wall of the pull rod 350. A protective cover 370 is sleeved on the outer side of the magnetic fluid sealing body 100. The outer wall of the protective cover 370 is symmetrically provided with locking grooves 380. The connecting plates 330 are slidably connected to the interior of the mounting cavities 320, and the outer wall of the connecting plates 330 is in contact with the inner wall of the mounting cavities 320. An inclined surface is provided on the right side of the locking blocks 340. 350 passes through one side of the connecting block 310, and the pull rod 350 is slidably connected to the connecting block 310; through the set protective mechanism 300, the protective cover 370 is placed outside the magnetic fluid sealing body 100, so that the guide tube 270 is located inside the protective cover 370, so that the protective cover 370 presses the locking block 340, so that the locking block 340 drives the connecting plate 330 to move, and presses the connecting spring 360. When the locking block 340 is aligned with the slot 380, the connecting plate 330 drives the locking block 340 to reset through the reset of the connecting spring 360, so that the locking block 340 is embedded in the slot 380, and the protective cover 370 is fixed, thereby protecting the guide tube 270 and the magnetic fluid sealing body 100, avoiding damage to the device from external impacts, and improving the protection of the device.

[0027] In use, this invention works as follows: First, the protective cover 370 is placed outside the magnetic fluid sealing body 100, with the guide tube 270 located inside the protective cover 370. This causes the protective cover 370 to press against the locking block 340, which in turn moves the connecting plate 330 and presses against the connecting spring 360. When the locking block 340 aligns with the slot 380, the resetting of the connecting spring 360 causes the connecting plate 330 to reset, allowing the locking block 340 to embed itself in the slot 380 and fix the protective cover 370. This, in turn, secures the guide tube 270 and the magnetic fluid sealing body 100. For protection, when the magnetic fluid sealing body 100 is in use, the pump 280 is started. The pump 280 starts to transport the cooling water inside the mounting box 220 into the guide pipe 270 through the water inlet pipe 290, and then back into the mounting box 220. The guide pipe 270 cools the magnetic fluid sealing body 100. At the same time, the semiconductor cooling block 230 cools the cooling water inside the mounting box 220 to prevent the magnetic fluid sealing body 100 from overheating. At the same time, the cooling fan 260 is started to dissipate heat from the hot end of the semiconductor cooling block 230 to prevent the surrounding air from overheating.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A magnetohydrodynamic sealing device with a water-cooled structure, characterized in that: It includes a magnetic fluid sealing body (100), a water cooling mechanism (200) is connected to the outside of the magnetic fluid sealing body (100), and a protective mechanism (300) is provided on the outside of the magnetic fluid sealing body (100). The water cooling mechanism (200) includes a fixing plate (210) fixed to the outer wall of the magnetic fluid sealing body (100). A mounting box (220) is fixedly connected to the right side of the fixing plate (210). A semiconductor cooling block (230) is uniformly and fixedly connected through the top of the mounting box (220). Support rods (240) are fixedly connected at the four corners of the top of the mounting box (220). A mounting bracket (250) is fixedly connected to the top of the support rod (240). A cooling fan (260) is uniformly and fixedly connected to the bottom of the mounting bracket (250). A guide pipe (270) is fixedly connected to the outer wall of the magnetic fluid sealing body (100). A pump (280) is fixedly connected to the rear right side of the mounting box (220). A water inlet pipe (290) is fixedly connected to the inlet end of the pump (280).

2. The magnetohydrodynamic sealing device with a water-cooled structure according to claim 1, characterized in that: The guide pipe (270) has a spiral structure, and the inlet end of the guide pipe (270) is fixedly connected to the outlet end of the pump (280).

3. The magnetohydrodynamic sealing device with a water-cooled structure according to claim 1, characterized in that: The outlet end of the guide pipe (270) passes through the rear left side of the mounting box (220), and the end of the water inlet pipe (290) is fixedly connected to the rear right side of the mounting box (220).

4. The magnetohydrodynamic sealing device with a water-cooled structure according to claim 1, characterized in that: The cooling fan (260) corresponds to the top of the semiconductor cooling block (230).

5. The magnetohydrodynamic sealing device with a water-cooled structure according to claim 1, characterized in that: The protective mechanism (300) includes connecting blocks (310) symmetrically fixedly connected to the left side of the outer wall of the magnetic fluid sealing body (100). The two connecting blocks (310) have mounting cavities (320) on opposite sides. The mounting cavities (320) are slidably connected to the interior of the mounting cavities (320). The two connecting plates (330) are fixedly connected to opposite sides of the two connecting plates (330). The middle of the two opposite sides of the two connecting plates (330) is fixedly connected to a pull rod (350). The outer wall of the pull rod (350) is sleeved with a connecting spring (360). The outer side of the magnetic fluid sealing body (100) is sleeved with a protective cover (370). The outer wall of the protective cover (370) is symmetrically provided with slots (380).

6. The magnetohydrodynamic sealing device with a water-cooled structure according to claim 5, characterized in that: The connecting plate (330) is slidably connected to the interior of the mounting cavity (320), and the outer side wall of the connecting plate (330) is in contact with the inner side wall of the mounting cavity (320). The right side of the locking block (340) is provided with an inclined surface.

7. The magnetohydrodynamic sealing device with a water-cooled structure according to claim 5, characterized in that: The pull rod (350) passes through one side of the connecting block (310), and the pull rod (350) is slidably connected to the connecting block (310).

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