CN217301589U

CN217301589U - High-load magnetic fluid sealing device

Info

Publication number: CN217301589U
Application number: CN202220038216.7U
Authority: CN
Inventors: 单平; 汤林军
Original assignee: Zhuzhou Dingnuo Technology Co Ltd
Current assignee: Zhuzhou Dingnuo Technology Co Ltd
Priority date: 2022-01-09
Filing date: 2022-01-09
Publication date: 2022-08-26
Anticipated expiration: 2032-01-09

Abstract

The utility model provides a high-load magnetic fluid sealing device, which belongs to the technical field of magnetic fluid sealing and comprises a shell, wherein a transmission shaft is arranged in the shell in a rotating way, butt-joint grooves are formed at two ends of the transmission shaft, a cavity is arranged in the shell, an air inlet is arranged at the upper side of the shell, an air outlet is arranged at the lower side of the shell, the air inlet and the air outlet are communicated with the cavity, a first sealing component and a second sealing component are respectively arranged at two ends of the shell, and the first sealing component and the second sealing component are used for enhancing the sealing property; through the gaseous precooling of transmission shaft, reduce the time that the transmission shaft heaied up to cooling transmission shaft and shell, avoiding the high load operation of transmission shaft to lead to the high temperature, guarantee the transmission shaft and stabilize the rotation, with overall structure's cooling effect and heat preservation effect, avoid gaseous surface flow along the transmission shaft, the setting of second rubber circle and first rubber circle further strengthens the leakproofness of shell.

Description

High-load magnetic fluid sealing device

Technical Field

The utility model belongs to the technical field of the magnetic current body is sealed, concretely relates to high load magnetic current body sealing device.

Background

The magnetic fluid sealing technology is developed after a brand new functional material of magnetic fluid appears, and the magnetic fluid sealing device has long service life, no mechanism abrasion, high vacuum degree applicability and the like, and is widely applied to the occasions of rotary sealing.

The magnetic fluid has liquid mobility and solid magnetic material magnetism, but the magnetic fluid can affect the mobility and magnetism of the magnetic fluid when used in high-temperature or low-temperature environments for a long time, great influence is generated on the magnetic fluid sealing device, and the sealing performance of the transmission shaft is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high load magnetic current body sealing device aims at solving among the prior art magnetic current body and uses mobility and the magnetism that can influence the magnetic current body for a long time at high temperature or low temperature environment, produces very big influence to magnetic current body sealing device, destroys the problem of the leakproofness of transmission shaft.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a high load magnetic current body sealing device, includes the shell, the shell internal rotation is provided with the transmission shaft, the butt joint groove has all been seted up at the both ends of transmission shaft, be provided with the cavity in the shell, the upside of shell is provided with the air inlet, the downside of shell is provided with the gas outlet, air inlet and gas outlet all communicate with the cavity, the both ends of shell are provided with first seal assembly and second seal assembly respectively, first seal assembly and second seal assembly are used for strengthening the leakproofness.

As an optimal scheme of the utility model, the cavity internal rotation is provided with two rotary seal, two the circumferential surface of transmission shaft is located to the equal cover of rotary seal, two rotary seal pastes the both sides inner wall of tight cavity respectively.

As a preferred scheme, first seal assembly includes that first bowl shape is sealed, first mounting groove and first rubber circle, the sealed outside-in of first bowl shape inserts in one side of shell, the circumferential surface of transmission shaft is located to the sealed cover of first bowl shape, the circumferential surface that first bowl shape is sealed is seted up in first mounting groove, first rubber circle is installed in first mounting groove.

As an optimized scheme of the utility model, the second seal assembly includes that the second bowl shape is sealed, second mounting groove and second rubber circle, the sealed outside-in of second bowl shape inserts in the opposite side of shell, the circumferential surface of transmission shaft is located to the sealed cover of second bowl shape, the circumferential surface that the second bowl shape is sealed is seted up in the second mounting groove, the second rubber circle is installed in the second mounting groove.

As an optimal scheme of the utility model, install first bearing in the first bowl shape is sealed, the circumferential surface of transmission shaft is located to first bearing housing.

As an optimal scheme of the utility model, install the second bearing in the sealed of second calathiform, the circumferential surface of transmission shaft is located to the second bearing cover.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses let in cooling gas in to the cavity, through cooling gas to the transmission shaft precooling, reduce the time that the transmission shaft heaied up to cooling down transmission shaft and shell, avoiding the high load operation of transmission shaft to lead to the high temperature, guarantee that the transmission shaft stably rotates, gaseous back of heaing up is discharged from the gas outlet, and the circulation gets into cooling gas, and the gaseous after the discharge heaies up, with overall structure's cooling effect and heat preservation effect.

2. The utility model discloses the sealed direction diameter that is close to the cavity of second bowl shape and first bowl shape is sealed all dwindles gradually, can avoid gaseous surface flow along the transmission shaft to block gaseous straight line and flow, the setting of second rubber circle and first rubber circle, the leakproofness of further reinforcing shell avoids inside gas to leak, prevents simultaneously that outside gas from getting into in the cavity.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the principles of the invention.

In the drawings:

fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a first cross-sectional structural schematic view of the present invention;

FIG. 3 is a second cross-sectional structural view of the present invention;

fig. 4 is a schematic structural diagram of the sealing assembly of the present invention.

In the figure: 1. a housing; 2. a drive shaft; 3. a butt joint groove; 4. a cavity; 5. an air inlet; 6. an air outlet; 7. rotating and sealing; 8. a first bowl seal; 9. a first mounting groove; 10. a first rubber ring; 11. a first bearing; 12. a second bowl seal; 13. a second mounting groove; 14. a second rubber ring; 15. a second bearing.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like, are to be interpreted broadly, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 to 4, the technical solution provided by the present embodiment is as follows:

the utility model provides a high load magnetic current body sealing device, including

shell

1, 1 internal rotation of shell is provided with transmission shaft 2, butt joint groove 3 has all been seted up at the both ends of transmission shaft 2, be provided with cavity 4 in the shell 1, the upside of shell 1 is provided with air inlet 5, the downside of shell 1 is provided with gas outlet 6, air inlet 5 and gas outlet 6 all communicate with cavity 4, the both ends of shell 1 are provided with first seal assembly and second seal assembly respectively, first seal assembly and second seal assembly are used for strengthening the leakproofness.

The utility model discloses an in the embodiment, air inlet 5 and external piping connection for let in cooling gas in to cavity 4, through cooling gas to transmission shaft 2 precooling, reduce the time that transmission shaft 2 heaied up, and cool down transmission shaft 2 and shell 1, avoid the operation of 2 high loads on transmission shaft to lead to the high temperature, guarantee that transmission shaft 2 rotates steadily, discharge from gas outlet 6 after gaseous intensification, the circulation gets into cooling gas, gas after the discharge intensifies, with overall structure's cooling effect and heat preservation effect.

Specifically, the cavity 4 internal rotation is provided with two rotary seal 7, and the circumferential surface of transmission shaft 2 is all located to two rotary seal 7 covers, and two rotary seal 7 paste the both sides inner wall of cavity 4 respectively tightly.

In the embodiment of the present invention, the rotary seal 7 is disposed at the edge of the cavity 4 to seal the cavity 4 and prevent the leakage of the cooling gas.

Specifically, first seal assembly includes that first bowl shape seals 8, first mounting groove 9 and first rubber circle 10, and the sealed 8 outside-in of first bowl shape inserts in one side of shell 1, and the circumferential surface of transmission shaft 2 is located to the sealed 8 cover of first bowl shape, and the circumferential surface of first bowl shape seals 8 is seted up to first mounting groove 9, and first rubber circle 10 is installed in first mounting groove 9.

The utility model discloses an in the embodiment, the direction diameter that first bowl shape is sealed 8 and is close to cavity 4 dwindles gradually, and the design of surface oblique angle can avoid gaseous surface flow along transmission shaft 2 to block gaseous sharp flow, and install first rubber circle 10 in first mounting groove 9, with the leakproofness between reinforcing shell 1 and the sealed 8 of first bowl shape, avoid inside gas to leak, prevent simultaneously that outside gas from getting into in the cavity 4.

Specifically, the second sealing assembly comprises a second bowl-shaped seal 12, a second mounting groove 13 and a second rubber ring 14, the second bowl-shaped seal 12 is inserted into the other side of the housing 1 from outside to inside, the second bowl-shaped seal 12 is sleeved on the circumferential surface of the transmission shaft 2, the second mounting groove 13 is arranged on the circumferential surface of the second bowl-shaped seal 12, and the second rubber ring 14 is mounted in the second mounting groove 13.

The utility model discloses an in the embodiment, the direction diameter that the sealed 12 of second bowl shape is close to cavity 4 reduces gradually, can avoid gaseous surface flow along transmission shaft 2 to block gaseous sharp flow, second rubber circle 14 is installed in second mounting groove 13, further strengthens the leakproofness between shell 1 and the sealed 8 of first bowl shape, avoids inside gas leakage, prevents simultaneously that outside gas from getting into in cavity 4.

Specifically, a first bearing 11 is installed in the first bowl-shaped seal 8, and the first bearing 11 is sleeved on the circumferential surface of the transmission shaft 2.

The embodiment of the utility model provides an in, the setting of first bearing 11 for 2 rotations of restriction transmission shaft keep transmission shaft 2 can smoothly rotate, reduce transmission shaft 2's resistance.

Specifically, a second bearing 15 is installed in the second bowl-shaped seal 12, and the second bearing 15 is sleeved on the circumferential surface of the transmission shaft 2.

The utility model discloses an in the embodiment, second bearing 15's setting for restriction transmission shaft 2 rotates, keeps transmission shaft 2 can smoothly rotate, reduces transmission shaft 2's resistance, and second bearing 15 and first bearing 11 set up respectively in both sides, guarantee that transmission shaft 2 can stably rotate.

The working principle is as follows: let in cooling gas in cavity 4, through cooling gas to 2 precooling of transmission shaft, reduce the time of 2 intensification of transmission shaft to cooling transmission shaft 2 and shell 1, avoid 2 high load operations of transmission shaft to lead to the high temperature, guarantee that transmission shaft 2 rotates steadily, gas heaies up the back and discharges from gas outlet 6, and the circulation gets into cooling gas, gas after the discharge intensifies to overall structure's cooling effect and heat preservation effect.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a high load magnetic current body sealing device, includes shell (1), its characterized in that, shell (1) internal rotation is provided with transmission shaft (2), butt joint groove (3) have all been seted up at the both ends of transmission shaft (2), be provided with cavity (4) in shell (1), the upside of shell (1) is provided with air inlet (5), the downside of shell (1) is provided with gas outlet (6), air inlet (5) and gas outlet (6) all communicate with cavity (4), the both ends of shell (1) are provided with first seal assembly and second seal assembly respectively, first seal assembly and second seal assembly are used for strengthening the leakproofness.

2. The high load magnetic fluid seal device according to claim 1 wherein: the cavity (4) internal rotation is provided with two rotary seals (7), two the circumferential surface of transmission shaft (2) is all located in rotary seal (7) cover, two rotary seal (7) paste the both sides inner wall of tight cavity (4) respectively.

3. A high load magnetic fluid seal device according to claim 2 wherein: first seal assembly includes that first bowl shape is sealed (8), first mounting groove (9) and first rubber circle (10), the sealed (8) outside-in of first bowl shape inserts in one side of shell (1), the circumference surface of transmission shaft (2) is located to the sealed (8) cover of first bowl shape, the circumference surface of the sealed (8) of first bowl shape is seted up in first mounting groove (9), first rubber circle (10) are installed in first mounting groove (9).

4. A high load magnetic fluid seal device according to claim 3 wherein: the second seal assembly comprises a second bowl-shaped seal (12), a second mounting groove (13) and a second rubber ring (14), the second bowl-shaped seal (12) is inserted into the other side of the shell (1) from the outside to the inside, the second bowl-shaped seal (12) is sleeved on the circumferential surface of the transmission shaft (2), the second mounting groove (13) is arranged on the circumferential surface of the second bowl-shaped seal (12), and the second rubber ring (14) is mounted in the second mounting groove (13).

5. The high-load magnetic fluid seal device according to claim 4, wherein: install first bearing (11) in first bowl shape is sealed (8), the circumferential surface of transmission shaft (2) is located to first bearing (11) cover.

6. The high-load magnetic fluid seal device according to claim 5, wherein: install second bearing (15) in second bowl shape is sealed (12), the circumferential surface of transmission shaft (2) is located to second bearing (15) cover.