CN202170871U - Double suction full balanced multistage pump - Google Patents
Double suction full balanced multistage pump Download PDFInfo
- Publication number
- CN202170871U CN202170871U CN2011202501980U CN201120250198U CN202170871U CN 202170871 U CN202170871 U CN 202170871U CN 2011202501980 U CN2011202501980 U CN 2011202501980U CN 201120250198 U CN201120250198 U CN 201120250198U CN 202170871 U CN202170871 U CN 202170871U
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- CN
- China
- Prior art keywords
- pump
- pumps
- multistage
- water
- impeller
- 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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Abstract
A double suction full balanced multistage pump is characterized in that it comprises two multistage pumps consisting of a water inlet section, an impeller, a middle section, a guide vane and a water outlet section; two multistage pumps are assembled on the same pump shaft; two water outlet sections are connected in parallel; the pump shaft is connected with the impeller via a flat key; two pumps are compactly connected together via the pump by the screw rod. The impellers are arranged symmetrically; the axial forces are mutually neutralized; and the impellers are operated stably. The pressures on two sides of the water outlet section are same; the two end shafts are in the low pressure area, the shaft seal is convenient; it is not easy for the pump to leak; and the pump efficiency is high. The utility model uses the two parallel connection pumps where the water is inflowed on two ends and the water is discharged from the middle of the pump; the flowing channel is twice as wide; the net positive suction head is reduced; and the operation is safe and reliable.
Description
Technical field
The utility model relates to a kind of pump, the full balance multistage pump of particularly a kind of double suction.
Background technique
Traditional horizontal, MODEL VERTICAL MULTISTAGE PUMP be with several even tens impeller serials on a pump shaft, because along with the increase of progression, the axial force that acts on the pump shaft becomes geometry level to increase; Therefore for the huge axial force of balance; The tradition multistage pump has increased supplementary structures such as the Balance disc that has no to concern with transformation of energy, gimbal, adds reflow pipe, refluxing chamber, not only complex structure; And the loss flow, pump efficiency reduces.In addition, the plural serial stage structure is crossed water channel and is had only one, and the passing capacity of water is very limited, and its first stage impeller is many to cause the import local compression to be lower than pressure for vaporization being lower than work under the suction condition of atmospheric pressure easily, thereby produces cavitation, and influence is operation normally.
Summary of the invention
The purpose of the utility model is to leak in order to overcome the above-mentioned deficiency of existing technology, to operate steadily and provide a kind of, not having, and net positive suction head is little, the full balance multistage pump of the double suction that pump efficiency is high.
The purpose of the utility model is achieved in that the full balance multistage pump of a kind of double suction; It is characterized in that it comprises two multistage pumps of being made up of inlet segment, impeller, stage casing, stator, water exit end; Two multistage pumps are assemblied on the same pump shaft; Two water exit ends are connected in parallel relatively, are connected through flat key between pump shaft and the impeller, two pumps are closely linked into an integrated entity through the pump housing by screw rod.
The utility model is owing to adopt above architecture advances, and the impeller symmetry is installed, and axial force is cancelled each other, and operates steadily.The water exit end pressure at both sides equates that shaft extension place in two ends is a low pressure area, and the axle envelope is convenient, accomplishes easily not leak, and pump efficiency is high.Adopt the two-way parallel-connected pumps structure of two ends water inlet, middle water outlet, free from worry one times of runner, net positive suction head descends, and is safe and reliable to operation.
Description of drawings
Fig. 1 is the utility model example structure schematic representation.
Embodiment
Combine the accompanying drawing illustrated embodiment that the utility model is made detailed description at present.
As shown in Figure 1; The full balance multistage pump of a kind of double suction; Comprise two multistage pumps of being made up of inlet segment 1, impeller 2, stage casing 3, stator 4, water exit end 5, two multistage pumps are assemblied on the same pump shaft 6, and two water exit ends 5 are connected in parallel relatively; Be connected through flat key 7 between pump shaft 6 and the impeller 2, through the pump housing two pumps closely linked into an integrated entity by screw rod 8.
Claims (1)
1. full balance multistage pump of double suction; It is characterized in that it comprises two multistage pumps of being made up of inlet segment (1), impeller (2), stage casing (3), stator (4), water exit end (5); Two multistage pumps are assemblied on the same pump shaft (6); Two water exit ends (5) are connected in parallel relatively, are connected through flat key (7) between pump shaft (6) and the impeller (2), two pumps are closely linked into an integrated entity through the pump housing by screw rod (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202501980U CN202170871U (en) | 2011-07-15 | 2011-07-15 | Double suction full balanced multistage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202501980U CN202170871U (en) | 2011-07-15 | 2011-07-15 | Double suction full balanced multistage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202170871U true CN202170871U (en) | 2012-03-21 |
Family
ID=45829067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202501980U Expired - Fee Related CN202170871U (en) | 2011-07-15 | 2011-07-15 | Double suction full balanced multistage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202170871U (en) |
-
2011
- 2011-07-15 CN CN2011202501980U patent/CN202170871U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20140715 |
|
| EXPY | Termination of patent right or utility model |