CN218954027U

CN218954027U - Magnetic fluid sealing equipment

Info

Publication number: CN218954027U
Application number: CN202223382834.2U
Authority: CN
Inventors: 郑俭; 杨帆
Original assignee: Wuxi Ciqiang Vog Vacuum Equipment Co ltd
Current assignee: Wuxi Ciqiang Vog Vacuum Equipment Co ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-05-02
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses magnetic fluid sealing equipment, which comprises a rotating shaft, wherein a magnetic conduction shaft sleeve is sleeved on the outer wall of the rotating shaft, a pair of bearings are arranged on the outer wall of the magnetic conduction shaft sleeve, a sealing shell is sleeved on the outer side of each bearing, sealing grooves are respectively arranged on the two sides of each sealing shell and correspond to the bearings, dust-proof rings are respectively arranged in the sealing grooves, the dust-proof rings are respectively sleeved on the outer wall of the magnetic conduction shaft sleeve, thread grooves are respectively arranged on the two sides of each sealing shell and correspond to the sealing grooves, and sealing blocks are connected in the thread grooves in a threaded manner, so that the magnetic fluid sealing equipment has the advantages that: through set up the dust ring and set up at the bearing outer wall at magnetic conduction axle sleeve outer wall cover, can prevent that outside dust from getting into inside the sealing device along the juncture of magnetic conduction axle sleeve and seal housing, avoid the dust to get into inside the magnetic fluid sealing device to lead to the dust to block the bearing, so that the magnetic fluid sealing device can't rotate, thereby improved magnetic fluid sealing device's life, reinforcing device's practicality.

Description

Magnetic fluid sealing equipment

Technical Field

The utility model relates to the technical field of magnetic fluid sealing, in particular to magnetic fluid sealing equipment.

Background

The magnetic fluid sealing device is characterized in that a set space is filled with magnetic fluid, a magnetic loop is formed among the permanent magnet, the magnetic guide plate, the magnetic fluid and the rotating shaft, and under the action of a magnetic field generated by the magnet, the magnetic fluid is magnetized to block a gap channel of the joint surface so as to achieve the aim of sealing.

The magnetic fluid sealing device with the publication number of CN206617583U has the advantages that the magnetic conduction shaft sleeve is arranged on the rotating shaft, no abrasion is caused between solid structures, maintenance is not needed, the service life is long, the high-temperature-resistant magnetic liquid is adopted to replace common magnetic liquid, and the part of the magnetic liquid, which is close to the inside of the tank body, is subjected to special waterproof treatment, so that the sealing system has higher adaptability, but in the actual use process, due to the lack of a protective device, the device is only suitable for places with cleaner working environments.

If the magnetic fluid sealing device works in an environment with more dust, the dust can enter the magnetic fluid sealing device, so that the dust can block the bearing, the magnetic fluid sealing device cannot rotate, and the practicability of the magnetic fluid sealing device is greatly reduced.

The design and manufacture of a magnetic fluid sealing device is designed and manufactured so as to solve the problem of lack of dust-proof devices.

Disclosure of Invention

The utility model aims to solve the technical problems: due to the lack of the protective device, the device is only suitable for working in places with cleaner environment, if more dust exists in the environment, the dust can enter the magnetic fluid sealing device, so that the dust can block the bearing, the magnetic fluid sealing device cannot rotate, and the practicality of the device is greatly reduced, and therefore the magnetic fluid sealing device is provided.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a magnetic fluid sealing device, includes the pivot, pivot outer wall cover is equipped with the magnetic conduction axle sleeve, the magnetic conduction axle sleeve outer wall is provided with a pair of bearing, the bearing outside cover is equipped with seal shell, seal shell both sides and all set up the seal groove with the corresponding position of bearing, seal groove inside all is provided with the dust ring, the dust ring all overlaps to establish at the magnetic conduction axle sleeve outer wall, seal shell both sides and all set up the screw groove with the corresponding position of seal groove, screw groove internal thread connection has the sealing block, through set up the dust ring and set up at the bearing outer wall at the magnetic conduction axle sleeve outer wall cover, can prevent outside dust from entering sealing device inside along the juncture of magnetic conduction axle sleeve and seal shell.

Preferably, a magnetic conduction cavity is arranged between the bearings, high-temperature-resistant magnetic liquid is arranged in the magnetic conduction cavity, the magnetic conduction cavity is arranged in the sealing shell and sleeved on the outer wall of the magnetic conduction shaft sleeve, and the sealing system has higher adaptability through the magnetic conduction cavity.

Preferably, the dustproof rings are all V-shaped rubber dustproof rings, and the dustproof rings can be further placed to prevent dust from entering the sealing device through the junction of the magnetic conduction shaft sleeve and the sealing shell.

Preferably, the side wall of the sealing block is provided with an annular groove, and two pairs of rotating blocks are fixedly connected inside the annular groove and are convenient to rotate through the rotating blocks.

Preferably, the sealing block is provided with the sealing gasket near one side of the thread groove, the sealing gasket is closely attached to the inner wall of the thread groove, and the sealing performance of connection is further improved through extrusion of the sealing block and the thread groove to the sealing gasket.

Preferably, the mounting holes are uniformly formed in the outer wall of the sealing shell, oil seal grooves are formed in the outer walls of two sides of the rotating shaft, the sealing shell is convenient to install through the mounting holes, and meanwhile the sealing performance of the device is further improved through the oil seal grooves.

Compared with the prior art, the utility model has the beneficial effects that: through set up the dust ring and set up at the bearing outer wall at magnetic conduction axle sleeve outer wall cover, can prevent that outside dust from getting into inside the sealing device along the juncture of magnetic conduction axle sleeve and seal housing, avoid the dust to get into inside the magnetic fluid sealing device to lead to the dust to block the bearing, so that the magnetic fluid sealing device can't rotate, thereby improved magnetic fluid sealing device's life, reinforcing device's practicality.

Drawings

FIG. 1 is a schematic view of a front partial cutaway structure of a magnetic fluid seal of the present utility model;

FIG. 2 is a schematic view of a partial enlarged structure at A of the present utility model;

FIG. 3 is a schematic view of the overall appearance of the magnetic fluid seal of the present utility model.

In the figure: 1. a rotating shaft; 2. a magnetic conductive shaft sleeve; 3. a bearing; 4. a seal housing; 5. sealing grooves; 6. a dust ring; 7. a thread groove; 8. a sealing block; 9. a magnetic conduction cavity; 10. an annular groove; 11. a rotating block; 12. a sealing gasket; 13. a mounting hole; 14. and (5) oil seal grooves.

Detailed Description

The utility model is further described below with reference to the accompanying drawings.

Example 1

Referring to fig. 1-3, the present embodiment provides a magnetic fluid sealing device, which includes a rotating shaft 1, a magnetic conduction shaft sleeve 2 sleeved on the outer wall of the rotating shaft 1, a pair of bearings 3 arranged on the outer wall of the magnetic conduction shaft sleeve 2, a sealing housing 4 sleeved on the outer side of the bearings 3, wherein the magnetic conduction shaft sleeve 2 is arranged on the rotating shaft 1, so that no abrasion is generated between solid structures, maintenance is not needed, the service life is longer, a magnetic conduction cavity 9 is arranged between the bearings 3, a high temperature resistant magnetic liquid is arranged in the magnetic conduction cavity 9, the magnetic conduction cavity 9 is arranged in the sealing housing 4 and sleeved on the outer wall of the magnetic conduction shaft sleeve 2, and the sealing system has higher adaptability through the magnetic conduction cavity 9;

the seal groove 5 is all offered in seal housing 4 both sides and is corresponding with bearing 3 position, dust ring 6 all sets up inside seal groove 5, dust ring 6 all overlaps and establishes at magnetic conduction axle sleeve 2 outer wall, through set up dust ring 6 at magnetic conduction axle sleeve 2 outer wall, and dust ring 6 sets up at bearing 3 outer wall, can prevent outside dust from getting into inside sealing device along the juncture of magnetic conduction axle sleeve 2 and seal housing 4, thread groove 7 all sets up in seal housing 4 both sides and with seal groove 5 corresponding position, sealing block 8 threaded connection is inside thread groove 7, fix dust ring 6 position through sealing block 8, in order to further guarantee the dustproof effect of device, the life of magnetic fluid sealing device has been improved, the practicality of reinforcing device has solved the technical problem that lacks dust keeper among the prior art.

Example 2

Referring to fig. 1-3, a further improvement was made over example 1:

wherein, the dust ring 6 is all set up to V type rubber dust ring 6, can further place and prevent that the dust from getting into sealing device inside through the juncture of magnetic conduction axle sleeve 2 and seal housing 4.

The annular groove 10 is formed in the side wall of the sealing block 8, two pairs of rotating blocks 11 are fixedly connected inside the annular groove 10, the sealing block 8 is convenient to rotate through the rotating blocks 11, and the convenience of the device is improved.

Wherein, sealing washer 12 sets up in sealing piece 8 and is close to screw groove 7 one side, and sealing washer 12 closely laminates with screw groove 7 inner wall, through sealing piece 8 and screw groove 7 to sealing washer 12's extrusion, further improves the sealing performance of connection.

Wherein, mounting hole 13 evenly sets up at sealed casing 4 outer wall, is convenient for install sealed casing 4 through mounting hole 13, improves the practicality of device, and oil seal groove 14 all sets up at pivot 1 both sides outer wall, further improves the sealing performance of device through oil seal groove 14 simultaneously.

The foregoing is merely a preferred embodiment of the present utility model and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present utility model, which are intended to be comprehended within the scope of the present utility model.

Other parts of the present utility model not described in detail are all of the prior art, and are not described in detail herein.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The utility model provides a magnetic fluid sealing device, includes pivot (1), pivot (1) outer wall cover is equipped with magnetic conduction axle sleeve (2), its characterized in that: the utility model discloses a magnetic conduction axle sleeve, including magnetic conduction axle sleeve (2), bearing (3) outer wall is provided with a pair of bearing (3), bearing (3) outside cover is equipped with seal housing (4), seal housing (4) both sides and all offer seal groove (5) with bearing (3) corresponding position, seal groove (5) inside all is provided with dust ring (6), dust ring (6) all overlap and establish at magnetic conduction axle sleeve (2) outer wall, seal housing (4) both sides and all offer thread groove (7) with seal groove (5) corresponding position, thread groove (7) inside threaded connection has sealing block (8).

2. A magnetic fluid sealing device according to claim 1, wherein: be provided with magnetic conduction chamber (9) between bearing (3), magnetic conduction chamber (9) inside is provided with high temperature resistant magnetic liquid, magnetic conduction chamber (9) set up in sealed casing (4) inside and the cover is established at magnetic conduction axle sleeve (2) outer wall.

3. A magnetic fluid sealing device according to claim 1, wherein: the dustproof rings (6) are all V-shaped rubber dustproof rings (6).

4. A magnetic fluid sealing device according to claim 1, wherein: an annular groove (10) is formed in the side wall of the sealing block (8), and two pairs of rotating blocks (11) are fixedly connected inside the annular groove (10).

5. A magnetic fluid sealing device according to claim 1, wherein: and a sealing gasket (12) is arranged on one side of the sealing block (8) close to the thread groove (7), and the sealing gasket (12) is tightly attached to the inner wall of the thread groove (7).

6. A magnetic fluid sealing device according to claim 1, wherein: the outer walls of the sealing shell (4) are uniformly provided with mounting holes (13), and the outer walls of the two sides of the rotating shaft (1) are respectively provided with an oil seal groove (14).