CN211343460U

CN211343460U - Transmission part assembly for high-temperature zero-leakage fan

Info

Publication number: CN211343460U
Application number: CN201922088514.8U
Authority: CN
Inventors: 陆伟; 廖代鹏; 张敏
Original assignee: Shanghai General Fan Co Ltd
Current assignee: Shanghai General Fan Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-25
Anticipated expiration: 2029-11-28

Abstract

The utility model discloses a transmission portion assembly for high temperature zero leakage fan, be equipped with first bearing and second bearing between main shaft and the bearing box body, the side of first bearing is equipped with oil scraper ring one, the side of second bearing is equipped with oil scraper ring two, oil scraper ring one and oil scraper ring two set up in opposite directions, be the bearing box cavity between oil scraper ring one and the oil scraper ring two; the end part of the bearing box body close to the first bearing is connected with a front end cover, and the end part of the bearing box body close to the second bearing is connected with a rear end cover; the front end cover is provided with a first cavity on the surface close to the main shaft, the front end cover is provided with an inflation inlet, a first labyrinth seal is arranged in the first cavity, the inflation inlet is communicated with the first labyrinth seal, the front end cover is provided with a first grease nipple, and the first grease nipple is communicated with the first cavity; the rear end cover is provided with a second cavity on the surface close to the main shaft, and the rear end cover is provided with a second grease nipple which is communicated with the second cavity. The utility model discloses a compact structure, it is sealed effectual, low to the installation accuracy requirement, high temperature resistant.

Description

Transmission part assembly for high-temperature zero-leakage fan

Technical Field

The utility model belongs to fan transmission spare part field, concretely relates to zero transmission portion assembly for leakage fan of high temperature.

Background

Fans used in steel plants, chemical plants and other occasions, gas conveyed by some fans contains harmful components to human bodies, and some fans are used for conveying process gas such as pure nitrogen. The sealing requirement on the fan is high, and especially at a shaft seal position, leakage is easy to generate due to the rotation of the main shaft. Generally, the fan is provided with a shaft seal at the back of the casing, and the shaft seal is not connected with the transmission case. The shaft seal is in the form of labyrinth seal, gas seal, carbon ring seal, etc. However, the sealing has the defects of high requirement on installation precision, easy abrasion and the like.

Patent 201620216642.X discloses a high sealed fan transmission shaft and fan transmission system, through reforming transform transmission shaft structure, realizes that the guide spills over the grease and flows back inside transmission system, not only improves sealed effect, reduces moreover frequently to change the sealed cost that leads to the fact of sealing up. But the transmission is not coupled to the fan seal.

SUMMERY OF THE UTILITY MODEL

The utility model discloses not enough to prior art exists, a zero transmission assembly for leakage fan of high temperature is provided to solve the leakage problem that current fan exists.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a transmission part assembly for a high-temperature zero-leakage fan comprises a main shaft and a bearing box body, wherein a first bearing and a second bearing are arranged between the main shaft and the bearing box body, a first oil deflector ring is arranged on the side surface of the first bearing, a second oil deflector ring is arranged on the side surface of the second bearing, the first oil deflector ring and the second oil deflector ring are oppositely arranged, and a bearing box cavity is arranged between the first oil deflector ring and the second oil deflector ring; the end part of the bearing box body close to the first bearing is connected with a front end cover, and the end part of the bearing box body close to the second bearing is connected with a rear end cover; the front end cover is provided with a first cavity on the surface close to the main shaft, the front end cover is provided with an inflation inlet, a first labyrinth seal is arranged in the first cavity, the inflation inlet is communicated with the first labyrinth seal, the front end cover is provided with a first grease nipple, and the first grease nipple is communicated with the first cavity; the rear end cover is provided with a second cavity on the surface close to the main shaft, and the rear end cover is provided with a second grease nipple which is communicated with the second cavity.

The utility model discloses further set up to, the tip of rear end cap is equipped with third grease nipple, the rear end cap with it has the third cavity to open on the face of main shaft contact, the end connection of third grease nipple has and stretches into pipeline in the third cavity, the pipeline external fixation has the oil blanket junk ring, second labyrinth seal and skeleton oil blanket are equipped with respectively to the both sides of oil blanket junk ring.

The utility model is further arranged in that a first round nut is arranged on the main shaft, the first round nut is positioned in the first cavity, and the side surface of the first round nut is propped against the first bearing; and a second round nut is arranged on the main shaft, is positioned in the second cavity, and is abutted against the second bearing on the side surface.

The utility model discloses further set up to, the tip of front end housing is inside to be equipped with to encircle the annular water course of main shaft, the upper portion and the lower part of front end housing are equipped with cooling water outlet and cooling water inlet respectively, the cooling water inlet with cooling water outlet intercommunication the water course.

The utility model discloses further set up to, the end connection of front end housing has the fan casing, the front end housing with be connected with the bellows between the fan casing.

The utility model discloses further set up to, the bellows with between the front end housing and with through flange joint between the fan casing.

The utility model is further arranged that the end part of the front end cover and one end part of the bearing box body, and the end part of the rear end cover and the other end part of the bearing box body are fixed by locking screws; o-rings are mounted on the face of the front end cover that contacts one end of the bearing housing and on the face of the rear end cover that contacts the other end of the bearing housing.

To sum up, the utility model discloses following beneficial effect has:

(1) the transmission part assembly for the high-temperature zero-leakage fan integrates the fan shaft seal and the transmission box body into a whole, and has a compact structure and a good sealing effect.

(2) The corrugated pipe is arranged at the front end of the main shaft of the transmission part assembly for the high-temperature zero-leakage fan, so that the sealing effect is good, and the requirement on the installation precision is low.

(3) The utility model discloses have good cooling system, can be high temperature resistant.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the present invention;

fig. 3 is a partially enlarged view of fig. 2.

Wherein, 1, a main shaft; 2. a bearing housing; 3. a first bearing; 4. a second bearing; 5. a first oil deflector ring; 6. a second oil deflector ring; 7. a front end cover; 8. a rear end cap; 9. a first cavity; 10. an inflation inlet; 11. A first labyrinth seal; 12. a first grease fitting; 13. a second cavity; 14. a second grease fitting; 15. a third grease fitting; 16. a third cavity; 17. an oil seal gasket; 18. a second labyrinth seal; 19. framework oil seal; 20. a first round nut; 21. a second round nut; 22. a water channel; 23. a fan housing; 24. a bellows; 25. a flange; 26. a cooling water inlet; 27. a cooling water outlet; 28. locking the screw; 29. an O-ring.

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.

As an embodiment of the utility model, can refer to fig. 1, a transmission portion assembly for zero leakage fan of high temperature, including main shaft 1 and bearing box 2, be equipped with first bearing 3 and second bearing 4 between main shaft 1 and the bearing box 2, be equipped with slinger 5 in the side of first bearing 3, be equipped with slinger two 6 in the side of second bearing 4, slinger 5 and slinger two 6 set up in opposite directions, be the bearing box cavity between slinger 5 and the slinger two 6. A front end cap 7 is connected to the end of the bearing housing 2 adjacent to the first bearing 3, and a rear end cap 8 is connected to the end of the bearing housing 2 adjacent to the second bearing 4. The front end cover 7 is provided with a first cavity 9 on the surface close to the main shaft 1, the front end cover 7 is provided with an inflation inlet 10, a first labyrinth seal 11 is arranged in the first cavity 9, the first labyrinth seal 11 is fixed in the front end cover 7 through a screw, the inflation inlet 10 is communicated with the first labyrinth seal 11, the front end cover 7 is provided with a first grease nipple 12, and the first grease nipple 12 is communicated with the first cavity 9. Normal temperature or cold air is injected through the charging port 10, so that the cooling effect can be achieved, and the high-pressure sealing effect can be achieved due to the fact that the charged gas is high-pressure gas, so that leakage of other toxic gases is prevented. The first labyrinth seal 11 prevents the left air from entering the right bearing housing 2. The first grease fitting 12 is used for lubricating the first bearing 3. The rear end cover 8 is provided with a second cavity 13 on the surface close to the main shaft 1, the rear end cover 8 is provided with a second grease nipple 14, and the second grease nipple 14 is communicated with the second cavity 13. The second grease fitting 14 is used for lubricating the second bearing 4.

Specifically, the end part of the front end cover 7 and one end part of the bearing box body 2, and the end part of the rear end cover 8 and the other end part of the bearing box body 2 are fixed through locking screws 28; o-rings 29 are provided on both the face of the front end cover 7 that contacts one end of the bearing housing 2 and the face of the rear end cover 8 that contacts the other end of the bearing housing 2.

Referring to fig. 3, a third grease nipple 15 is arranged at the end of the rear end cover 8, a third cavity 16 is formed in the surface of the rear end cover 8 contacting with the main shaft 1, a pipeline extending into the third cavity 16 is connected to the end of the third grease nipple 15, an oil seal lining ring 17 is fixed outside the pipeline, and a second labyrinth seal 18 and a framework oil seal 19 are respectively installed on two sides of the oil seal lining ring 17. Grease is injected from the third grease nipple 15 to perform a lubricating function, and heat generation due to friction can be prevented.

Referring to fig. 2, the main shaft 1 is provided with a first round nut 20, the first round nut 20 is positioned in the first cavity 9, and the side surface of the first round nut 20 abuts against the first bearing 3. And a second round nut 21 is arranged on the main shaft 1, the second round nut 21 is positioned in the second cavity 13, and the side surface of the second round nut 21 is abutted against the second bearing 4.

Referring to fig. 2, the end of the front end cover 7 generates a lot of heat because it is located at the end of the main shaft 1, so that an annular water channel 22 surrounding the main shaft 1 is arranged inside the end of the front end cover 7, the upper part and the lower part of the front end cover 7 are respectively provided with a cooling water outlet 27 and a cooling water inlet 26, the cooling water outlet 27 and the cooling water inlet 26 are communicated with the water channel 22, and cooling water enters and exits from the water channel, thereby achieving a good cooling effect.

Referring to fig. 2, a blower housing 23 is connected to an end of the front cover 7, and a bellows 24 is connected between the front cover 7 and the blower housing 23. The corrugated pipe 24 is connected with the front end cover 7 and the fan casing 23 through flanges 25. The bellows 24 plays a role in connection transition, and can prevent gas leakage between the fan casing 23 and the front end cover 7. Moreover, when being installed, the axial distance is convenient to adjust. In addition, the centering is convenient, the requirement on the flatness of the fan shell 23 is low, and even an uneven surface has little influence.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A transmission part assembly for a high-temperature zero-leakage fan comprises a main shaft and a bearing box body, wherein a first bearing and a second bearing are arranged between the main shaft and the bearing box body; the end part of the bearing box body close to the first bearing is connected with a front end cover, and the end part of the bearing box body close to the second bearing is connected with a rear end cover; the front end cover is provided with a first cavity on the surface close to the main shaft, the front end cover is provided with an inflation inlet, a first labyrinth seal is arranged in the first cavity, the inflation inlet is communicated with the first labyrinth seal, the front end cover is provided with a first grease nipple, and the first grease nipple is communicated with the first cavity; the rear end cover is provided with a second cavity on the surface close to the main shaft, and the rear end cover is provided with a second grease nipple which is communicated with the second cavity.

2. The transmission part assembly for the high-temperature zero-leakage fan as claimed in claim 1, wherein a third grease nipple is arranged at an end of the rear end cover, a third cavity is formed in a surface of the rear end cover contacting the main shaft, a pipeline extending into the third cavity is connected to an end of the third grease nipple, an oil seal gasket is fixed outside the pipeline, and a second labyrinth seal and a framework oil seal are respectively installed on two sides of the oil seal gasket.

3. The transmission part assembly for the high-temperature zero-leakage fan as claimed in claim 1, wherein a first round nut is mounted on the main shaft, the first round nut is located in the first cavity, and a side surface of the first round nut abuts against the first bearing; and a second round nut is arranged on the main shaft, is positioned in the second cavity, and is abutted against the second bearing on the side surface.

4. The transmission assembly of claim 1, wherein an annular water channel surrounding the main shaft is disposed inside an end of the front cover, and a cooling water outlet and a cooling water inlet are disposed at an upper portion and a lower portion of the front cover, respectively, and the cooling water inlet and the cooling water outlet are communicated with the water channel.

5. The transmission part assembly for the high-temperature zero-leakage fan as claimed in claim 1, wherein a fan casing is connected to an end of the front end cover, and a corrugated pipe is connected between the front end cover and the fan casing.

6. The transmission part assembly for the high-temperature zero-leakage fan as claimed in claim 5, wherein the corrugated pipe is connected with the front end cover and the fan casing through flanges.

7. The transmission part assembly for the high-temperature zero-leakage fan as claimed in claim 1, wherein a space between an end of the front end cover and one end of the bearing housing, and a space between an end of the rear end cover and the other end of the bearing housing are fixed by locking screws; o-rings are mounted on the face of the front end cover that contacts one end of the bearing housing and on the face of the rear end cover that contacts the other end of the bearing housing.