CN215634962U

CN215634962U - Sealing device for vertical shaft lower bearing of powder concentrator

Info

Publication number: CN215634962U
Application number: CN202122109807.7U
Authority: CN
Inventors: 贺龙; 张学强; 金连仲; 黄录新
Original assignee: Shenyang Jidong Cement Co ltd
Current assignee: Shenyang Jidong Cement Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-01-25
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a sealing device for a vertical shaft lower bearing of a powder concentrator, which comprises a shell and a vertical shaft body inserted into the shell, wherein the bearing body is arranged at the middle lower part of the vertical shaft body, the bearing body is positioned in the shell, a first sealing ring and a second sealing ring are respectively arranged between the upper end and the lower end of the shell and the vertical shaft body, a second oil seal is arranged in the first sealing ring, and a first oil seal and a packing are arranged in the second sealing ring. The utility model aims to provide a sealing device of a vertical shaft lower bearing of a powder concentrator, which has a simple structure and a good sealing effect.

Description

Sealing device for vertical shaft lower bearing of powder concentrator

Technical Field

The utility model relates to the technical field of bearing sealing, in particular to a sealing device for a vertical shaft lower bearing of a powder concentrator.

Background

The bearing is an important part in the modern mechanical equipment, and the main function of the bearing is to support a mechanical rotating body, reduce the friction coefficient in the movement process of the mechanical rotating body and ensure the rotation precision of the mechanical rotating body.

The utility model discloses a chinese utility model patent that publication number is CN209743583U discloses an O-sepa selection powder machine vertical scroll lower bearing seal structure, including vertical scroll body, bearing and found axle sleeve, the bottom threaded connection who found the axle sleeve inner wall has the lower extreme cover, the bottom of vertical scroll body runs through the bottom of founding axle sleeve and lower extreme cover and extending to the lower extreme cover, the bottom threaded connection on lower extreme cover surface has sealed lid. This O-sepa selection powder machine vertical scroll bearing seal structure down, sealed lid can prevent inside entering vertical shaft sleeve such as dust, waste oil after the use can directly be discharged into sealed lid in, and discharge through the oil extraction pipe, prevent that the impurity in the dust in the air and the waste oil from adhering on the surface of bearing, prolong its life and reduce maintenance and use cost, first sealing washer, second sealing washer and third sealing washer can prevent lubricating oil along the surface seepage of vertical scroll, make the vertical scroll body be located the outside surface of sealed lid and can not be stained with the greasy dirt, convenient clearance has improved the practicality. However, the sealing structure has poor actual sealing effect, cannot prevent dust, has a complex structure, cannot completely discharge lubricating oil, and is very inconvenient to replace the lubricating oil.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides the sealing device for the vertical shaft lower bearing of the powder concentrator, which has a simple structure and a good sealing effect.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model relates to a sealing device for a vertical shaft lower bearing of a powder concentrator, which comprises a shell and a vertical shaft body inserted into the shell, wherein the bearing body is arranged at the middle lower part of the vertical shaft body, the bearing body is positioned in the shell, a first sealing ring and a second sealing ring are respectively arranged between the upper end and the lower end of the shell and the vertical shaft body, a second oil seal is arranged in the first sealing ring, and a first oil seal and a packing are arranged in the second sealing ring.

According to the sealing device for the vertical shaft lower bearing of the powder concentrator, an oil inlet is formed in the upper portion of one side wall of the shell, a first screw rod is connected with the oil inlet in a threaded mode, a first limiting plate is arranged at the outer end of the first screw rod, an oil outlet is formed in the right side of the bottom plate of the shell, a second screw rod is connected with the oil outlet in a threaded mode, and a second limiting plate is arranged at the lower end of the second screw rod.

The utility model relates to a sealing device for a vertical shaft lower bearing of a powder concentrator.

The sealing device for the vertical shaft lower bearing of the powder concentrator at least has the following beneficial effects:

1. according to the utility model, the first oil seal and the second oil seal are arranged in the middle of the first sealing ring and the second sealing ring, so that lubricating oil in the shell is prevented from leaking out from a gap between the vertical shaft body and the shell, and the sealing effect is improved;

2. a packing is arranged in the second sealing ring, so that external dust is effectively prevented from entering the shell, and the sealing effect is further improved;

3. the oil discharge port is arranged at the bottom of the shell, so that lubricating oil in the shell can be discharged completely before oil change;

4. when lubricating oil needs to be changed, the first screw rod and the second screw rod are required to be sequentially screwed out from the oil inlet and the oil discharge port respectively, after the lubricating oil inside the shell is discharged, the second screw rod is screwed back to the oil discharge port, the oil discharge port is plugged, then new lubricating oil is injected from the oil inlet, the first screw rod is screwed back to the oil inlet after oil injection is finished, and the lubricating oil is convenient and fast to replace.

In a word, the sealing device of this application is provided with first oil blanket, second oil blanket, three sealed of packing along vertical scroll body axial top-down, and simple structure has just promoted sealed effect greatly, trades oil easy operation, efficient simultaneously.

Drawings

FIG. 1 is a schematic perspective view of a sealing device for a lower bearing of a vertical shaft of a powder concentrator according to the present invention;

FIG. 2 is a front partial cross-sectional view of a sealing device for a lower bearing of a vertical shaft of a powder concentrator in accordance with the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at A;

fig. 4 is a partially enlarged view of fig. 2 at B.

Description of reference numerals:

1. a vertical shaft body; 2. a threaded hole; 3. a mounting seat; 4. a housing; 5. a first seal ring; 6. a second seal ring; 7. a first seal groove; 8. a second seal groove; 9. packing; 10. a first oil seal; 11. a bearing body; 12. a third seal groove; 13. a second oil seal; 14. a first limit plate; 15. a first sealing ring; 151. a second sealing ring; 16. a first screw; 17. an oil inlet; 18. a second limiting plate; 19. an oil discharge port; 20. a second screw.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in figures 1-4, the sealing device for the vertical shaft lower bearing of the powder concentrator comprises a shell 4, a vertical shaft body 1 is inserted into the shell 4 from the middle part, a bearing body 11 is arranged at the middle lower part of the vertical shaft body 1, and the bearing body 11 is positioned in the shell 4. The periphery of the upper end of the shell 4 is circumferentially provided with mounting seats 3, threaded holes 2 are circumferentially and uniformly distributed in the mounting seats 3 at intervals, and bolts are inserted into the threaded holes 2 to connect the mounting seats 3 with an end cover (not shown in the figure) of the vertical shaft body 1. Be provided with first sealing ring 5 between 4 upper ends of casing and the vertical scroll body 1, be provided with second sealing ring 6 between lower extreme and the vertical scroll body 1, be provided with third seal groove 12 in the first sealing ring 5, the inside second oil blanket 13 that is provided with of third seal groove 12, be provided with first seal groove 7, the second seal groove 8 of interval arrangement one on the other in the second sealing ring 6, first seal groove 7 is inside to be provided with first oil blanket 10, prevent that lubricating oil from flowing from the downside, the inside packing 9 that is provided with of second seal groove 8. Through set up first oil blanket 10 and second oil blanket 13 in first sealing ring 5 and second sealing ring 6 middle part, prevent that the inside lubricating oil of casing 4 from spilling from the gap between vertical scroll body 1 and casing 4, set up packing 9 simultaneously and prevent that external dust from entering into inside the casing 4 from this gap.

An oil inlet 17 is formed in the upper portion of the left side wall of the shell 4, a first screw 16 is connected to the inside of the oil inlet 17 in a threaded manner, a first limiting plate 14 is arranged at the outer end of the first screw 16, and a first sealing ring 15 is arranged between the first limiting plate 14 and the shell 4 to prevent lubricating oil from flowing out of the oil inlet 17. An oil discharge port 19 is formed in the right side of the bottom plate of the shell 4, a second screw rod 20 is connected to the inner portion of the oil discharge port 19 in a threaded mode, a second limiting plate 18 is arranged at the lower end of the second screw rod 20, and a second sealing ring 151 is arranged between the second limiting plate 18 and the shell 4 to prevent lubricating oil from flowing out of the oil discharge port 19. When lubricating oil needs to be changed, the first screw 16 is screwed out of the oil inlet 17, the second screw 20 is screwed out of the oil outlet 19, the lubricating oil in the shell 4 is discharged, the oil outlet 19 is arranged at the bottom of the shell 4, the lubricating oil is conveniently exhausted, the second screw 20 is screwed back to the oil outlet 19, new lubricating oil is injected from the oil inlet 17, the first screw 16 is screwed back to the oil inlet 17, the lubricating oil can be changed, and the whole operation is simple, reliable and high in efficiency.

The utility model relates to a working principle of a sealing device of a vertical shaft lower bearing of a powder concentrator, which comprises the following steps: set up first oil blanket 10, second oil blanket 13 in first sealing ring 5, the second sealing ring 6 respectively, avoided the inside lubricating oil of casing 4 to spill from the gap between vertical scroll body 1 and the casing 4 effectively, further, set up packing 9 in first oil blanket 10 below, prevent that external dust from entering into inside the casing 4, first oil blanket 10, second oil blanket 13, packing 9 three cooperate, are showing the sealed effect of having strengthened sealing device. When the lubricating oil needs to be changed, the first screw 16 is screwed out of the oil inlet 17 by hand, the second screw 20 is screwed out of the oil outlet 19, the lubricating oil in the shell 4 is discharged, then the second screw 20 is screwed back to the oil outlet 19, new lubricating oil is injected from the oil inlet 17, and finally the first screw 16 is screwed back to the oil inlet 17, so that the lubricating oil is convenient and quick to change.

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 or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. A sealing device of a vertical shaft lower bearing of a powder concentrator comprises a shell (4) and a vertical shaft body (1) inserted into the shell, and is characterized in that: the vertical shaft sealing structure is characterized in that a bearing body (11) is arranged on the middle lower portion of the vertical shaft body (1), the bearing body (11) is located in the shell (4), a first sealing ring (5) and a second sealing ring (6) are arranged between the upper end and the lower end of the shell (4) and the vertical shaft body (1) respectively, a second oil seal (13) is arranged in the first sealing ring (5), and a first oil seal (10) and a packing (9) are arranged in the second sealing ring (6).

2. The sealing device for the lower shaft bearing of the vertical shaft of the powder concentrator, according to claim 1, is characterized in that: an oil inlet (17) is arranged on the upper portion of one side wall of the shell (4), a first screw rod (16) is connected to the inner thread of the oil inlet (17), a first limiting plate (14) is arranged at the outer end of the first screw rod (16), an oil discharge port (19) is arranged on the right side of a bottom plate of the shell (4), a second screw rod (20) is connected to the inner thread of the oil discharge port (19), and a second limiting plate (18) is arranged at the lower end of the second screw rod (20).

3. The sealing device for the lower shaft bearing of the vertical shaft of the powder concentrator, as claimed in claim 2, is characterized in that: and a third sealing groove (12) is formed in the first sealing ring (5), and the second oil seal (13) is positioned in the third sealing groove (12).

4. A sealing device for a vertical shaft lower bearing of a powder concentrator as claimed in claim 3, wherein: the sealing device is characterized in that a first sealing groove (7) and a second sealing groove (8) which are arranged at an upper interval and a lower interval are arranged in the second sealing ring (6), a first oil seal (10) is arranged in the first sealing groove (7), and a packing (9) is arranged in the second sealing groove (8).

5. The sealing device for the lower shaft bearing of the vertical shaft of the powder concentrator, as claimed in claim 4, is characterized in that: and a mounting seat (3) is circumferentially arranged on the periphery of the upper end of the shell (4).

6. The sealing device for the lower shaft bearing of the vertical shaft of the powder concentrator, as claimed in claim 5, is characterized in that: threaded holes (2) are circumferentially and uniformly distributed in the mounting seat (3) at intervals, and bolts are inserted into the threaded holes (2) to connect the mounting seat (3) with an end cover of the vertical shaft body (1).

7. A sealing device for a vertical shaft lower bearing of a powder concentrator as claimed in any one of claims 2 to 6, wherein: a first sealing ring (15) is arranged between the first limiting plate (14) and the shell (4).

8. The sealing device for the lower shaft bearing of the vertical shaft of the powder concentrator, according to claim 7, is characterized in that: and a second sealing ring (151) is arranged between the second limiting plate (18) and the shell (4).