CN201433930Y - Bearing assembly for multistage centrifugal pump for chemical process - Google Patents
Bearing assembly for multistage centrifugal pump for chemical process Download PDFInfo
- Publication number
- CN201433930Y CN201433930Y CN2009203026807U CN200920302680U CN201433930Y CN 201433930 Y CN201433930 Y CN 201433930Y CN 2009203026807 U CN2009203026807 U CN 2009203026807U CN 200920302680 U CN200920302680 U CN 200920302680U CN 201433930 Y CN201433930 Y CN 201433930Y
- Authority
- CN
- China
- Prior art keywords
- bearing
- pump
- pump shaft
- impeller
- centrifugal pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a bearing assembly for a multistage centrifugal pump for a chemical process, which comprises a bearing block with radiating fins, a bearing, a bearing cover, an oil retaining disk and a sealing ring, wherein the bearing block is provided with the bearing cover, and is arranged on a pump shaft through the bearing; the pump shaft is provided with the oil retaining disk; the sealing ring is arranged between the oil retaining disk and the bearing cover; the pump shaft is provided with an impeller; and the bearing block is provided with an impellerchimney with air inletand outlet. The impeller is arranged on the pump shaft, and the pump shaft drives the impeller to rotate at a high speed to pump cold air into the pump, so the temperature of the radiating fins of thebearing block can be reduced, and the service life of the bearing can be improved; and the sealing ring is further cooled through a clearance between the oil retaining disk and the bearing cover so as to improve the service life and the sealing effect of the sealing ring. The bearing assembly can be applied to the multistage centrifugal pump for the chemical process, and also can be applied to various pumps.
Description
Technical field
The utility model relates to a kind of high temperature multilevel chemical centrifugal pump that applies to industries such as oil, chemical industry, particularly relates to multilevel chemical centrifugal pump shaft bearing assembly.
Background technique
The multilevel chemical centrifugal pump is widely used in fields such as oil, chemical industry, smelting, printing and dyeing, electric power and printing and dyeing.And high temperature multilevel chemical centrifugal pump is mainly used coal liquefaction, coal for replacing oil and coal system wet goods Coal Chemical Industry industry, and the technical performance index of pump requires: design pressure≤12MPa; Operating temperature is at 250 to 300 ℃; Rotating speed≤3000rpm.Bearing as one of core component of pump is an important indicator of examination pump quality, bearing must use being full of under the environment of lubricant oil, in order to prevent the leakage of lubricant oil, pump shaft is provided with oil baffle disc, between oil baffle disc and bearing gland, be provided with seal ring, because high temperature multilevel chemical centrifugal pump is after working long hours, the temperature of pump shaft is higher, in order to reduce the temperature of parts such as bearing, bearings mounted bearing support is provided with radiating fin, though radiating fin can reduce the temperature of pump shaft, but the long-time temperature of back radiating fin of using can be more and more higher, its radiating effect descends greatly, and the seal ring that is provided with between oil baffle disc and the bearing gland ruckbildung occurs along with the rising of temperature, its sealing effect descends thereupon, cause occurring the generation of oil leak phenomenon, descended to the working life of bearing, pollute the working environment of pump on the other hand.
The model utility content
The utility model purpose is to provide a kind of multilevel chemical centrifugal pump bearing unit of new structure, by the impeller of installing cool air is drawn into, can reduce the temperature of bearing support radiating fin on the one hand, come the coolant seal ring by the space between oil baffle disc and the bearing gland on the other hand, improve the working life and the sealing effect of seal ring.
The technological scheme that realizes the utility model purpose is:
A kind of multilevel chemical centrifugal pump bearing unit, comprise flange-cooled bearing support, bearing, bearing gland, oil baffle disc and seal ring, described bearing gland is installed on the described bearing support, described bearing support by described Bearing Installation on pump shaft, described pump shaft is provided with described oil baffle disc, be provided with described seal ring between described oil baffle disc and bearing gland, it is characterized in that: described pump shaft is provided with impeller, and described bearing support is provided with the impeller chimney of band air ports.
The utility model compared with prior art has following advantage:
Because impeller is installed on pump shaft, utilize pump shaft impeller high speed rotating, cool air is drawn into, can reduce the temperature of bearing support radiating fin on the one hand, the working life of improving bearing; Come further coolant seal ring by the space between oil baffle disc and the bearing gland on the other hand, improve the working life and the sealing effect of seal ring.
Description of drawings
Fig. 1 is the structural representation of multilevel chemical centrifugal pump described in the utility model with bearing unit
1. impeller chimney 2. impellers 3. oil baffle discs 4. seal rings 5. bearing glands
6. radiating fin 7. bearing supports 8. bearings 9. pump shafts
Embodiment
As can be seen from Figure 1, a kind of multilevel chemical centrifugal pump bearing unit, comprise bearing support 7, bearing 8, bearing gland 5, oil baffle disc 3 and the seal ring 4 of being with radiating fin 6, bearing gland 5 is installed on bearing support 7, bearing support 7 is installed on the pump shaft 9 by bearing 8, and described pump shaft 9 is provided with oil baffle disc 3, is provided with seal ring 4 between oil baffle disc 3 and bearing gland 5, pump shaft 9 is provided with impeller 2, and bearing support 7 is provided with the impeller chimney 1 of band air ports.
This bearing unit not only can be used on the multilevel chemical centrifugal pump, also can be used on the various pumps.
Claims (1)
1. multilevel chemical centrifugal pump bearing unit, the bearing support (7) that comprises band radiating fin (6), bearing (8), bearing gland (5), oil baffle disc (3) and seal ring (4), described bearing gland (5) is installed on the described bearing support (7), described bearing support (7) is installed on the pump shaft (9) by described bearing (8), described pump shaft (9) is provided with described oil baffle disc (3), between described oil baffle disc (3) and bearing gland (5), be provided with described seal ring (4), it is characterized in that: described pump shaft (9) is provided with impeller (2), and described bearing support (7) is provided with the impeller chimney (1) of band air ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203026807U CN201433930Y (en) | 2009-04-29 | 2009-04-29 | Bearing assembly for multistage centrifugal pump for chemical process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203026807U CN201433930Y (en) | 2009-04-29 | 2009-04-29 | Bearing assembly for multistage centrifugal pump for chemical process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201433930Y true CN201433930Y (en) | 2010-03-31 |
Family
ID=42052737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203026807U Expired - Fee Related CN201433930Y (en) | 2009-04-29 | 2009-04-29 | Bearing assembly for multistage centrifugal pump for chemical process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201433930Y (en) |
-
2009
- 2009-04-29 CN CN2009203026807U patent/CN201433930Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100331 Termination date: 20100429 |