CN101839253A - Vertical two-phase flow submerged pump - Google Patents
Vertical two-phase flow submerged pump Download PDFInfo
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- CN101839253A CN101839253A CN200910128090A CN200910128090A CN101839253A CN 101839253 A CN101839253 A CN 101839253A CN 200910128090 A CN200910128090 A CN 200910128090A CN 200910128090 A CN200910128090 A CN 200910128090A CN 101839253 A CN101839253 A CN 101839253A
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- vertical
- phase flow
- bearing
- submerged pump
- pump shaft
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Abstract
A vertical two-phase flow submerged pump mainly comprises impellers 4, a pump shaft 2 and the like, and is characterized in that: an upper bearing block 3 is arranged above a liquid level, while a lower bearing block 8 is arranged below the liquid level; the upper end of the pump shaft 2 runs through the upper bearing block 3 and is supported by grease lubricated bearings 1 arranged in the upper bearing block 3, while a lower end is extended into the lower bearing block 8 from the upper end of the lower bearing block 8 and is supported by a water lubricated bearing 7 arranged in the lower bearing block; the lower bearing block 8 is provided with a cleaning pressure water injection opening 10, and the lower end of the lower bearing block 8 is sealed; a water tank 9 is arranged on the water lubricated bearing 7; a sealing device 6 is arranged at the upper end of the water lubricated bearing 7; and the impellers 4 are arranged between the grease lubricated bearings 1 and the water lubricated bearing 7.
Description
Technical field
The invention belongs to the centrifugal pump technical field, particularly a kind of vertical centrifugal pump is mainly used in and carries the fluid that the solid-liquid two-phase is arranged.
Background technique
At the fluid that industrial field often will carry some to contain the solid-liquid two-phase with pump, this class pump is commonly called transh pump, is being also sometimes referred to as sewage pump, slag stock pump, slurry pump etc.Because two-phase solid-liquid fluid, the solid-liquid two-phase flow pump is designed to the form of vertical submerged pump sometimes, and promptly the motor partial design is more than liquid level, and impeller design is below liquid level.Because the solid particle that contains in the liquid causes the damage of Sealing easily, so will realize that under liquid level the sealing of bearing is comparatively difficult.Therefore two-phase flow pump all is designed to the impeller cantilever support under the present disclosed vertical solution, and promptly all design is more than liquid level for the bearing of supporting pump shaft, and the pump shaft cantilever stretches into drives impeller under the liquid level.This design brings two problems, and the stress of first bearing and pump shaft is bad, even after the design strength that improves bearing and pump shaft, bearing is still this highest position of class failure of pump rate; It two is that impeller stretches into the subsurface degree of depth and can only do more shallowly, generally all be no more than 1.5 meters, and this situation makes the using scope of vertical two-phase flow submerged pump be subjected to a lot of restrictions.
Summary of the invention
Purpose of the present invention is exactly that a kind of vertical two-phase flow submerged pump that can solve above-mentioned deficiency will be provided.The vertical two-phase flow submerged pump that the present invention proposes comprises impeller 4, pump shaft 2, it is characterized in that: liquid level to be to be provided with upper bearing bracket 3, at liquid level to be arranged with step 8; Pump shaft 2 upper ends pass upper bearing bracket 3 and by grease lubrication bearing 1 supporting of installing within it, step 8 is stretched into from the upper end of step 8 in pump shaft 2 lower ends, and by water lubriucated bearing 7 supportings of installing within it; Step 8 is provided with cleaning pressure water inlet 10, lower end closed; Water lubriucated bearing 7 is provided with the tank 9 for the clean water circulation, is provided with seal arrangement 6 in the upper end of water lubriucated bearing 7, and impeller 4 is installed between grease lubrication bearing 1 and the water lubriucated bearing 7.
The present invention compares with prior art, its advantage is: because impeller 4 is being installed on the pump shaft 2 between 7 liang of group bearings of grease lubrication bearing 1 and water lubriucated bearing, the stress of pump shaft 2 and bearing part is improved greatly than the cantilever support of prior art, can reduce the rate of fault of bearing part and pump shaft 2 greatly; By the same token, the bearing value of pump shaft 2 improves greatly, makes impeller 4 stretch into the subsurface degree of depth and also can design deeplyer, therefore can enlarge the using scope of two-phase flow pump under the vertical solution.
Description of drawings
Fig. 1 is the specific embodiments of the invention sectional drawings.
Fig. 2 is the local amplification sectional view at the A-A place.
Among Fig. 1, Fig. 2,1 is the grease lubrication bearing, and 2 is pump shaft, and 3 is upper bearing bracket, and 4 is impeller, 5 axle sleeves, and 6 is sealing mechanism, and 7 is water lubriucated bearing, and 8 is step, and 9 is tank, 10 is the clean water inlet.
Embodiment
In Fig. 1, be provided with two grease lubrication rolling bearings 1 in the upper bearing bracket 3, there is an impeller 4 to be fixed on the pump shaft 2.Also can on pump shaft 2, fix a plurality of impellers in some embodiments, form multistage pump.Automatically cleaning water filling inlet 10 injects to enter the tank 9 that is arranged on the water lubriucated bearing and make progress and flows under the effect of clean water at pressure, thereby realize the cooling of water lubriucated bearing 7 and lubricated, can also wash away simultaneously the solid particle of sneaking in the water lubriucated bearing 7, to prolong the life-span of water lubriucated bearing 7.The effect of sealing mechanism 6 is to stop the solid particle in the liquid to enter water lubriucated bearing 7.Sealing mechanism 6 is labyrinth sealing in the present embodiment, also can select modes such as oil sealing, spiral seal, back impeller sealing in some embodiments for use.Axle sleeve 5 is fixed on the pump shaft 2, and forms friction pair with water lubriucated bearing 7, when the attrition surface of axle sleeve 5 may wear to a certain degree, can change easily, and needn't change the higher pump shaft of price 2.
Claims (7)
1. a vertical two-phase flow submerged pump is made up of impeller 4, pump shaft 2 etc., it is characterized in that: liquid level to be to be provided with upper bearing bracket 3, at liquid level to be arranged with step 8; The upper end of pump shaft 2 is passed upper bearing bracket 3 and is supported by the grease lubrication bearing of installing within it 1; Step 8 is stretched into from the upper end of step 8 in the lower end of pump shaft 2, and by water lubriucated bearing 7 supportings of installing within it; Step 8 is provided with cleaning pressure water inlet 10, lower end closed; Water lubriucated bearing 7 is provided with tank 9; Upper end at water axle lubricating bearings 7 is provided with seal arrangement 6; Impeller 4 is installed between grease lubrication bearing 1 and the water lubriucated bearing 7.
2. a kind of vertical two-phase flow submerged pump according to claim 1 is characterized in that: described sealing mechanism 6 is labyrinth seal.
3. a kind of vertical two-phase flow submerged pump according to claim 1 is characterized in that: described sealing mechanism 6 is oil sealing.
4. a kind of vertical two-phase flow submerged pump according to claim 1 is characterized in that: described sealing mechanism 6 is spiral seal.
5. a kind of vertical two-phase flow submerged pump according to claim 1 is characterized in that: described sealing machine 6 structures are the back impeller sealing.
6. a kind of vertical two-phase flow submerged pump according to claim 1 is characterized in that: axle sleeve 5 is housed on pump shaft 2, and described axle sleeve 5 and water lubriucated bearing 7 are formed friction pair.
7. a kind of vertical two-phase flow submerged pump according to claim 1 is characterized in that: be fixed with a plurality of impellers on pump shaft 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128090A CN101839253A (en) | 2009-03-19 | 2009-03-19 | Vertical two-phase flow submerged pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910128090A CN101839253A (en) | 2009-03-19 | 2009-03-19 | Vertical two-phase flow submerged pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101839253A true CN101839253A (en) | 2010-09-22 |
Family
ID=42742849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910128090A Pending CN101839253A (en) | 2009-03-19 | 2009-03-19 | Vertical two-phase flow submerged pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101839253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943777A (en) * | 2012-11-19 | 2013-02-27 | 大耐泵业有限公司 | Volute-type high-pressure submerged pump |
-
2009
- 2009-03-19 CN CN200910128090A patent/CN101839253A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943777A (en) * | 2012-11-19 | 2013-02-27 | 大耐泵业有限公司 | Volute-type high-pressure submerged pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20100922 |