Constant magnetic fluid sealing transmission equipment

Abstract

The utility model relates to the technical field of sealing transmission, in particular to a constant magnetic fluid sealing transmission device which comprises a transmission shaft and a magnetic fluid, the transmission shaft and the magnetic fluid are provided with a permanent magnet and a magnetic pole in a matched mode, a first sealing ring groove is formed in the magnetic pole, and a dust cover is sleeved with the first sealing ring groove in a sliding mode. The transmission shaft is fixedly sleeved with an installation disc, and a second sealing ring groove is formed in the installation disc. The dustproof cover is arranged to carry out dustproof protection on the magnetic fluid, and the first sealing ring groove and the second sealing ring groove are matched with the installation operation of the dustproof cover, so that the sealing performance of the dustproof cover during installation is guaranteed, and compared with the prior art that the magnetic fluid is exposed outside, the magnetic fluid is prevented from being damaged. According to the technical scheme, dustproof protection is carried out on the magnetofluid through the dustproof cover, dust in the air can be prevented from entering the magnetofluid to cause overlarge sealing starting or operation torque of the constant magnetofluid, and then the service life of the magnetofluid is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed transmission, in particular to a permanent magnetic fluid sealed transmission device. Background Art

[0002] Sealed transmission mostly uses constant magnetic fluid sealed transmission for operation. Magnetic fluid sealing technology is developed based on magnetic fluid. When magnetic fluid is injected into the gap of the magnetic field, it can fill the entire gap and form a "liquid O-ring".

[0003] During the use of the existing permanent magnetic fluid seal, since the permanent magnetic fluid seal mechanism is not provided with a corresponding dust-proof structure, the permanent magnetic fluid seal mechanism is easily invaded by dust during operation, resulting in dust accumulation inside the permanent magnetic fluid seal mechanism, causing the permanent magnetic fluid seal to have excessive starting or operating torque. Utility Model Content

[0004] The utility model aims to solve the problem that dust is easily invaded and accumulated when the permanent magnetic fluid sealing mechanism in the prior art is in operation, and proposes a permanent magnetic fluid sealing transmission device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A permanent magnetic fluid sealed transmission device, comprising a transmission shaft and a magnetic fluid installed on the transmission device, wherein the transmission shaft and the magnetic fluid are matched with permanent magnets and magnetic poles, a first sealing ring groove is provided on the magnetic pole, a dust cover is slidably sleeved in the first sealing ring groove, a mounting disc is fixedly sleeved on the transmission shaft, a second sealing ring groove is provided on the mounting disc, a baffle fixedly connected to the dust cover is slidably sleeved in the second sealing ring groove, a receiving plate is fixedly connected to the dust cover, a moisture-proof agent is placed between the baffle and the receiving plate, and a cover plate is slidably sleeved on the baffle and the receiving plate;

[0007] The transmission shaft is provided with a fixing mechanism for fixing the dust cover.

[0008] Preferably, sealing gaskets are provided in the first sealing ring groove and the second sealing ring groove.

[0009] Preferably, the mounting disc is located in the dust cover, and both ends of the baffle extend to the upper and lower ends of the dust cover respectively.

[0010] Preferably, a through hole is provided on the receiving plate, a sealing ring is fixedly connected to the bottom end of the cover plate and slides against the inner wall of the receiving plate and the outer wall of the baffle plate, and the cover plate is fixed to the receiving plate and the baffle plate with bolts.

[0011] Preferably, the fixing mechanism comprises a threaded portion provided on the transmission shaft, the threaded portion is threadedly connected with a threaded fixing piece, the threaded fixing piece is provided with an inner hexagonal driving hole, and the inner hexagonal driving hole is matched with an outer hexagonal driving rod.

[0012] Preferably, an inner wall of the threaded fixing piece is provided with an internal thread corresponding to the threaded portion.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. In the utility model, a dust cover is provided to protect the magnetic fluid from dust, and the first sealing ring groove and the second sealing ring groove are used to cooperate with the installation of the dust cover, which helps to ensure the sealing of the dust cover during installation. Compared with the prior art in which the magnetic fluid is exposed to the outside, the technical solution uses a dust cover to protect the magnetic fluid from dust, which helps to prevent dust in the air from entering the magnetic fluid and causing excessive torque when starting or running the permanent magnetic fluid seal, thereby extending the service life of the magnetic fluid.

[0015] 2. In the utility model, moisture in the air around the magnetic fluid is absorbed by a desiccant, so as to prevent the magnetic fluid from being in a humid environment for a long time when the transmission shaft is in an idle state, resulting in excessive torque at the start or operation of the permanent magnetic fluid seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a permanent magnetic fluid sealed transmission device proposed by the utility model;

[0017] Figure 2 For this utility model Figure 1 A cross-sectional view of

[0018] Figure 3 This is a schematic diagram of the transmission shaft and threaded part structure of a permanent magnetic fluid sealing transmission device proposed by the utility model;

[0019] Figure 4 The utility model provides a schematic diagram of the structure of an external hexagonal drive rod of a permanent magnetic fluid sealing transmission device.

[0020] In the figure: 1. transmission shaft; 2. magnetic fluid; 3. permanent magnet; 4. magnetic pole; 5. first sealing ring groove; 6. dust cover; 7. mounting disc; 8. second sealing ring groove; 9. baffle; 10. storage plate; 11. moisture-proof agent; 12. cover plate; 13. threaded part; 14. threaded fixing part; 15. internal hexagonal driving hole; 16. external hexagonal driving rod. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-Figure 4 , a permanent magnetic fluid sealed transmission device, comprising a transmission shaft 1 and a magnetic fluid 2 installed on the transmission device, and the transmission shaft 1 and the magnetic fluid 2 are matched with permanent magnets 3 and magnetic poles 4;

[0023] A first sealing ring groove 5 is provided on the magnetic pole 4, a dust cover 6 is slidably sleeved in the first sealing ring groove 5, a mounting disc 7 is fixedly sleeved on the transmission shaft 1, the mounting disc 7 is located in the dust cover 6, a second sealing ring groove 8 is provided on the mounting disc 7, and a sealing gasket is provided in the first sealing ring groove 5 and the second sealing ring groove 8. The sealing performance of the dust cover 6 during installation is further guaranteed by the provision of the sealing gasket. The upper and lower ends of the dust cover 6 are sealed by providing the first sealing ring groove 5 and the second sealing ring groove 8 in conjunction with the mounting disc 7, so that the dust cover 6 is sealed at both ends, and the transmission shaft 1 and the magnetic fluid 2 are dust-proof protected by the dust cover 6, which helps to prevent dust in the air from entering the magnetic fluid 2, resulting in excessive torque when the permanent magnetic fluid seal is started or operated;

[0024] A baffle plate 9 fixedly connected to the dust cover 6 is slidably sleeved in the second sealing ring groove 8, and both ends of the baffle plate 9 extend to the upper and lower ends of the dust cover 6 respectively. A receiving plate 10 is fixedly connected to the dust cover 6, and a through hole is provided on the receiving plate 10. A moisture-proof agent 11 is placed between the baffle plate 9 and the receiving plate 10. Through the setting of the through hole, the moisture-proof agent 11 can absorb moisture in the external air, which helps to ensure that the idle environment of the magnetic fluid 2 is relatively dry.

[0025] The baffle plate 9 and the receiving plate 10 are slidably mounted with a cover plate 12, and the bottom end of the cover plate 12 is fixedly connected with a sealing ring that slides against the inner wall of the receiving plate 10 and the outer wall of the baffle plate 9. The cover plate 12 is fixed with bolts to the receiving plate 10 and the baffle plate 9. The cover plate 12 is fixed with bolts to allow the cover plate 12 to be disassembled, and the moisture-proof agent 11 can be replaced regularly, which helps to ensure the use effect of the moisture-proof agent 11;

[0026] The transmission shaft 1 is provided with a fixing mechanism for fixing the dust cover 6;

[0027] A further implementation method is as follows: the fixing mechanism includes a threaded portion 13 provided on the transmission shaft 1, a threaded fixing member 14 is threadedly connected to the threaded portion 13, an internal thread corresponding to the threaded portion 13 is provided on the inner wall of the threaded fixing member 14, and the dust cover 6 is threadedly extruded by the threaded fixing member 14, which helps to improve the tightness of the connection between the dust cover 6 and the sealing gasket, and the threaded fixing member 14 is provided with an internal hexagonal drive hole 15, and the internal hexagonal drive hole 15 is matched with an external hexagonal drive rod 16, and the external hexagonal drive rod 16 is inserted into the internal hexagonal drive hole 15, and the external hexagonal drive rod 16 is rotated so that the threaded portion 13 can rotate, and the external hexagonal drive rod 16 is used as a driving tool to perform operations, which helps to reduce the labor intensity of the staff.

[0028] The functional principle of the utility model can be explained through the following operation modes:

[0029] The dust cover 6 is slidably mounted in the first sealing ring groove 5. At the same time, the lower end of the baffle 9 is slidably mounted in the second sealing ring groove 8. The moisture-proof agent 11 is placed between the receiving plate 10 and the baffle 9. The cover plate 12 is fixedly installed on the receiving plate 10 and the baffle 9. The threaded fixing part 14 is mounted on the transmission shaft 1. The external hexagonal driving rod 16 rotates the threaded fixing part 14 through the internal hexagonal driving hole 15. The threaded fixing part 14 is threadedly matched with the threaded part 13, so that the threaded fixing part 14 moves on the transmission shaft 1 toward the mounting disc 7, squeezing the dust cover 6, thereby completing the fixing operation of the dust cover 6.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A permanent magnetic fluid sealed transmission device, comprising a transmission shaft (1) and a magnetic fluid (2) mounted on the transmission device, wherein the transmission shaft (1) and the magnetic fluid (2) are matched with permanent magnets (3) and magnetic poles (4), characterized in that: The magnetic pole (4) is provided with a first sealing ring groove (5), a dust cover (6) is slidably mounted in the first sealing ring groove (5), a mounting disc (7) is fixedly mounted on the transmission shaft (1), a second sealing ring groove (8) is provided on the mounting disc (7), a baffle (9) fixedly connected to the dust cover (6) is slidably mounted in the second sealing ring groove (8), a receiving plate (10) is fixedly connected to the dust cover (6), a moisture-proof agent (11) is placed between the baffle (9) and the receiving plate (10), and a cover plate (12) is slidably mounted on the baffle (9) and the receiving plate (10); The transmission shaft (1) is provided with a fixing mechanism for fixing the dust cover (6).

2. A permanent magnetic fluid sealed transmission device according to claim 1, characterized in that: The first sealing ring groove (5) and the second sealing ring groove (8) are both provided with sealing gaskets.

3. A permanent magnetic fluid sealed transmission device according to claim 1, characterized in that: The mounting disc (7) is located in the dust cover (6), and both ends of the baffle (9) extend to the upper and lower ends of the dust cover (6) respectively.

4. A permanent magnetic fluid sealed transmission device according to claim 1, characterized in that: The receiving plate (10) is provided with a through hole, and a sealing ring is fixedly connected at the bottom end of the cover plate (12) and is slidably abutted against the inner wall of the receiving plate (10) and the outer wall of the baffle plate (9), and the cover plate (12) is fixed to the receiving plate (10) and the baffle plate (9) by bolts.

5. A permanent magnetic fluid sealed transmission device according to claim 1, characterized in that: The fixing mechanism comprises a threaded portion (13) formed on the transmission shaft (1), a threaded fixing member (14) being threadedly connected to the threaded portion (13), a hexagonal driving hole (15) being formed on the threaded fixing member (14), and an outer hexagonal driving rod (16) being matched with the hexagonal driving hole (15).

6. A permanent magnetic fluid sealed transmission device according to claim 5, characterized in that: An internal thread corresponding to the threaded portion (13) is provided on the inner wall of the threaded fixing member (14).

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