CN220539923U

CN220539923U - Leakage-proof bearing box

Info

Publication number: CN220539923U
Application number: CN202321487710.2U
Authority: CN
Inventors: 徐孟磊
Original assignee: Ningfeng Technology Ningbo Co ltd
Current assignee: Ningfeng Technology Ningbo Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2024-02-27
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to the field of bearing boxes, and discloses a leakage-proof bearing box, which has the technical scheme that the leakage-proof bearing box comprises a box body, a front end cover and a rear end cover, wherein the front end cover and the rear end cover are respectively and detachably connected to two ends of the box body, a gas passing pipe is used for conveying gas into a gas groove, so that the gas pressure in the gas groove is increased, the gas pressure in the gas groove is higher than the gas pressure in a fan shell, the gas pressure in the fan shell cannot leak through a labyrinth seal groove, the tightness is improved, the labyrinth seal groove has good sealing performance, the overall sealing effect is better, daily maintenance is not required, a vulnerable part does not exist in the design, the sealing performance between the front end cover and a main shaft is increased by skeleton sealing, and oil leakage is prevented.

Description

Leakage-proof bearing box

Technical Field

The utility model relates to the field of bearing boxes, in particular to a leakage-proof bearing box.

Background

In the metallurgical industry, many fan media contain inflammable and explosive components such as H2, CO and the like, and the temperature of the media is very high between 200 and 350 ℃ according to different working conditions, so that higher requirements are put on the functionality of the fan, firstly, zero leakage of the medium gas is ensured, and secondly, the fan can normally and safely operate at high temperature;

wherein the fan includes the main shaft and is arranged in the bearing box that supports the main shaft, among the fan shaft seal scheme of using always, can adopt multichannel graphite ring and fill the carbocycle of nitrogen and seal, and such shaft seal mode cost is great, and the carbocycle is worn and torn easily and is needed periodic replacement.

Disclosure of Invention

Aiming at the defects existing in the prior art, the utility model aims to provide a leakage-proof bearing box which is free from daily maintenance and does not need wearing parts.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a leak protection bearing box, includes box, front end housing and rear end housing, the front end housing with the rear end housing can dismantle respectively connect in the both ends of box, be provided with the labyrinth seal groove in the rear end housing, the air tank has been seted up on the rear end housing, the intercommunication has the trachea on the air tank, the air tank is located the labyrinth seal groove with between the box, be provided with two skeleton seals in the front end housing, two be provided with the oil filler ring between the skeleton seal, the intercommunication has the oil filler pipe on the oil filler ring.

As a further improvement of the utility model, a cooling groove is formed in the rear end cover, and two cooling water pipes are communicated with the cooling groove.

As a further improvement of the utility model, a first annular groove is formed in one side face of the front end cover, which faces the box body, and a first sealing ring is embedded in the first annular groove.

As a further improvement of the utility model, a second annular groove is formed in one side face of the rear end cover, which faces the box body, and a second sealing ring is embedded in the second annular groove.

As a further improvement of the utility model, a first oil cavity is formed between the front end cover and the box body, a second oil cavity is formed between the rear end cover and the box body, a first bearing and a second bearing are fixedly connected in the box body, the first bearing is positioned in the first oil cavity, and the second bearing is positioned in the second oil cavity.

As a further improvement of the utility model, the box body is provided with a first oil filling hole and a second oil filling hole, the first oil filling hole is communicated with the first oil cavity, and the second oil filling hole is communicated with the second oil cavity.

As a further improvement of the utility model, the box body is connected with a plurality of lifting rings in a threaded manner.

As a further improvement of the utility model, a flange plate is formed on one side of the rear end cover, which is away from the box body, a third annular groove is formed on the flange plate, and a third sealing ring is embedded in the third annular groove.

As a further improvement of the utility model, a plurality of brackets are integrally formed on the box body, and fixing holes are formed on the brackets.

The utility model has the beneficial effects that: according to the utility model, the air is conveyed into the air groove through the air pipe, so that the air pressure in the air groove is increased, the air pressure in the air groove is higher than the air pressure in the fan shell, the air pressure in the fan shell cannot leak through the labyrinth seal groove, the sealing performance is improved, the labyrinth seal groove has good sealing performance, the overall sealing effect is better, daily maintenance is not required, no wearing parts exist in the design, the sealing performance between the front end cover and the main shaft is improved by the framework seal, and the leakage of oil is prevented.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A in accordance with the present utility model;

fig. 4 is an enlarged schematic view of the structure of fig. 2B according to the present utility model.

Reference numerals: 1. a case; 11. a first bearing; 12. a second bearing; 13. a first oil filler hole; 14. a second oil filling hole; 15. lifting rings; 2. a front end cover; 21. sealing a framework; 22. oil injection ring; 23. a filler pipe; 24. a first oil chamber; 3. a rear end cover; 31. a labyrinth seal groove; 32. an air tank; 33. an air pipe; 34. a cooling tank; 341. a cooling water pipe; 35. a second oil chamber; 36. a flange plate; 361. a third seal ring; 4. a first seal ring; 5. a second seal ring; 6. a bracket; 61. and a fixing hole.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples. Wherein like parts are designated by like reference numerals. It should be noted that the words "front", "back", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

Referring to fig. 1 and 2, in the anti-leakage bearing housing of the present embodiment, a main shaft is disposed in the bearing housing, one end of the main shaft is connected with a motor through a coupling, the other end of the main shaft is connected with an impeller, the anti-leakage bearing housing comprises a housing 1, a front end cover 2 and a rear end cover 3, the front end cover 2 and the rear end cover 3 are respectively detachably connected to two ends of the housing 1, a labyrinth seal groove 31 is disposed in the rear end cover 3, an air groove 32 is disposed on the rear end cover 3, an air pipe 33 is communicated with the air groove 32, and air is conveyed into the air groove 32 through the air pipe 33, so that air pressure in the air groove 32 is increased, and thus the air pressure in the air groove 32 is higher than air pressure in a fan housing, so that the air pressure in the fan housing cannot leak through the labyrinth seal groove 31, and the tightness is improved;

and the labyrinth seal groove 31 has good sealing performance, so that the overall sealing effect is better;

in addition, the design does not need daily maintenance, and vulnerable parts are not existed;

the air groove 32 is positioned between the labyrinth seal groove 31 and the box body 1, two framework seals 21 are arranged in the front end cover 2, and the framework seals 21 increase the tightness between the front end cover 2 and the main shaft and prevent oil leakage;

an oil filler ring 22 is arranged between the two framework seals 21, and an oil filler pipe 23 is communicated with the oil filler ring 22.

Referring to fig. 4, a cooling groove 34 is formed in the rear cover 3, two cooling water pipes 341 are provided in communication with the cooling groove 34, and cold water is introduced into the cooling groove 34 through one cooling water pipe 341, so that the rear cover 3 and the main shaft are cooled, and the cooling water flows out from the other cooling water pipe 341, thereby forming a circulation and ensuring the effectiveness of the cooling water.

Referring to fig. 2, a first ring groove is formed in a side surface of the front end cover 2, facing the case 1, and a first sealing ring 4 is embedded in the first ring groove, and the sealing performance between the front end cover 2 and the case 1 is improved by the first sealing ring 4, so that leakage of the first oil cavity 24 is prevented.

Referring to fig. 4, a second ring groove is formed in a side surface of the rear end cover 3, facing the box body 1, and a second sealing ring 5 is embedded in the second ring groove, and the second sealing ring 5 increases the tightness between the rear end cover 3 and the box body 1, so that leakage of the second oil cavity 35 is prevented.

Referring to fig. 3 and 4, a first oil cavity 24 is formed between the front end cover 2 and the box 1, a first cavity is formed on one side of the front end cover 2 facing the box 1, a second cavity is formed on one side of the box 1 facing the front end cover 2, the first cavity is communicated with the second cavity to form a first oil cavity 24, a second oil cavity 35 is formed between the rear end cover 3 and the box 1, a third cavity is formed on one side of the rear end cover 3 facing the box 1, a fourth cavity is formed on one side of the box 1 facing the rear end cover 3, the third cavity is communicated with the fourth cavity to form a second oil cavity 35, a first bearing 11 and a second bearing 12 are fixedly connected in the box 1, the first bearing 11 is located in the first oil cavity 24, the second bearing 12 is located in the second oil cavity 35, and the first bearing 11 and the second bearing 12 support the main shaft.

Referring to fig. 2, the first oil hole 13 and the second oil hole 14 are formed in the case 1, the first oil hole 13 communicates with the first oil chamber 24, the second oil hole 14 communicates with the second oil chamber 35, the first oil chamber 24 can be filled with oil through the first oil hole 13, lubrication of the first bearing 11 is ensured, the second oil chamber 35 is filled with oil through the second oil hole 14, and lubrication of the second bearing 12 is ensured.

Referring to fig. 1 and 2, a plurality of lifting rings 15 are screwed on the case 1, and the lifting rings 15 are convenient to disassemble and assemble in a screwed connection manner, and in this embodiment, two lifting rings 15 are provided, so that the whole bearing case is convenient to move.

The rear end cover 3 deviates from the one side of box 1 and is formed with ring flange 36, has seted up the third annular on the ring flange 36, and the embedded third sealing washer 361 that is equipped with of third annular is connected expansion joint structure in the one side that the rear end cover 3 deviates from box 1, through the setting of ring flange 36 for connect simpler, and set up third sealing washer 361, increased the leakproofness between ring flange 36 and the expansion joint structure.

The integrated into one piece has a plurality of supports 6 on the box 1, has seted up fixed orifices 61 on the support 6, and support 6 is provided with four, increases the stability of box 1 for box 1 can fix through support 6, passes fixed orifices 61 through the bolt, and matches the nut realization.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A leak-proof bearing housing, characterized in that: including box (1), front end housing (2) and rear end housing (3) can dismantle respectively connect in the both ends of box (1), be provided with maze seal groove (31) in rear end housing (3), air groove (32) have been seted up on rear end housing (3), the intercommunication has trachea (33) on air groove (32), air groove (32) are located maze seal groove (31) with between box (1), be provided with two skeleton seals (21) in front end housing (2), two be provided with oil filler ring (22) between skeleton seals (21), the intercommunication has oil filler pipe (23) on oil filler ring (22).

2. A leak-proof bearing housing as defined in claim 1, wherein: a cooling groove (34) is formed in the rear end cover (3), and two cooling water pipes (341) are communicated with the cooling groove (34).

3. A leak-proof bearing housing as defined in claim 1, wherein: a first annular groove is formed in the front end cover (2) facing to one side face of the box body (1), and a first sealing ring (4) is embedded in the first annular groove.

4. A leak-proof bearing housing as defined in claim 3, wherein: a second annular groove is formed in the side face, facing the box body (1), of the rear end cover (3), and a second sealing ring (5) is embedded in the second annular groove.

5. A leak-proof bearing housing as defined in claim 1, wherein: a first oil cavity (24) is formed between the front end cover (2) and the box body (1), a second oil cavity (35) is formed between the rear end cover (3) and the box body (1), a first bearing (11) and a second bearing (12) are fixedly connected in the box body (1), the first bearing (11) is located in the first oil cavity (24), and the second bearing (12) is located in the second oil cavity (35).

6. A leak-proof bearing housing as defined in claim 5, wherein: the box body (1) is provided with a first oil filling hole (13) and a second oil filling hole (14), the first oil filling hole (13) is communicated with the first oil cavity (24), and the second oil filling hole (14) is communicated with the second oil cavity (35).

7. A leak-proof bearing housing as defined in claim 1, wherein: the box body (1) is connected with a plurality of lifting rings (15) in a threaded manner.

8. A leak-proof bearing housing as defined in claim 1, wherein: a flange plate (36) is formed on one side, away from the box body (1), of the rear end cover (3), a third annular groove is formed in the flange plate (36), and a third sealing ring (361) is embedded in the third annular groove.

9. A leak-proof bearing housing as defined in claim 1, wherein: a plurality of brackets (6) are integrally formed on the box body (1), and fixing holes (61) are formed in the brackets (6).