CN2604542Y - Multistage centrifugal pump - Google Patents
Multistage centrifugal pump Download PDFInfo
- Publication number
- CN2604542Y CN2604542Y CN 03228601 CN03228601U CN2604542Y CN 2604542 Y CN2604542 Y CN 2604542Y CN 03228601 CN03228601 CN 03228601 CN 03228601 U CN03228601 U CN 03228601U CN 2604542 Y CN2604542 Y CN 2604542Y
- Authority
- CN
- China
- Prior art keywords
- main shaft
- utility
- impeller
- model
- blade
- 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
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a multistage eccentric pump which comprises a stand, a motor installed at the stand roof, a coupling and a main shaft installed in the stand, a discharge casing equipped at the stand bottom, a medium casing equipped at the stand bottom, a water feeding casing equipped at the stand bottom, a plurality of blade wheels of different stage installed below the main shaft and a guide blade installed below the main shaft. The coupling is a clamp coupling connecting the motor shaft with the main shaft; the blade wheel comprises a final blade wheel and a plurality of other stage of blade wheels with the diameter of the final blade wheel larger than that of other stage of blade wheel; in the guide blade is embedded a water-lubricated bearing which is equipped with a flume and bears below the main shaft between which and the water-lubricated bearing is equipped an interstage bushing; the guide blade abandons the conventional configuration of a cover plate and cooperates with the medium casing to form a diffusion cavity; the discharge casing is a volute type of pumping chamber. The utility model is characterized by compact structure, small grounding area, high performance price ratio, lower maintenance cost, well resistance performance of corrosion and rust, outstanding sealing performance and high reliability. The utility model can effectively prevent a scuffing when the pump starts up at the application field of fire fighting; the utility model can lower the construction cost when used for a water supply for the fire fighting at a tall building. Especially, the utility model is suitable for a scale industrial production.
Description
Technical field
The utility model relates to centrifugal pump, particularly a kind of multistage centrifugal pump.
Background technique
Traditional multistage centrifugal pump exists following deficiency:
1. the impeller diameter equal and opposite in direction of each grade wants to change lift, must increase or reduce progression, and the lift that changes must be the integral multiple of single-stage impeller lift.
2. stator all has cover plate, and the final stage stator must be arranged.
3. the suction casing bottom all has a water lubriucated bearing to come support rotor.
4. must there be a rolling bearing to come support rotor in the support.
5. generally all connect electric-motor-driving with elastic dowel pin shaft coupling.
Summary of the invention
Task of the present utility model provides a kind of improved multistage centrifugal pump, and it has solved the existing deficiency of conventional art.
The technical solution of the utility model is as follows:
A kind of multistage centrifugal pump, it comprises support, motor in the cantilever tip arrangement, coupling of in support, settling and main shaft, Spit Section, stage casing and inlet segment in the frame bottom installing, and several grades of impellers installing in the main shaft bottom and stator, described coupling is the folder shell-type coupling that makes motor reel and main shaft binding; Described impeller comprises impeller and other grade impeller, and the diameter of impeller is greater than the diameter of other grade impeller; Be inlaid with the water lubriucated bearing of band tank in the described stator, water lubriucated bearing supporting spindle bottom, installing inter-stage cover between water lubriucated bearing and main shaft, stator has been cancelled cover plate, and stator and stage casing form the diffusion cavity; Described Spit Section is the scroll casing type pumping chamber.
Multistage centrifugal pump of the present utility model can be widely used in municipal water supply and supercharging, factory and high residential building group's water supply, freezing, the cooling recirculation system of air conditioner heating system supply water, fire-fighting, spray system and boiler water supply, the direction that it imports and exports flange can become 90 °, 180 °, 270 ° layouts with respect to the suction port direction on demand.
The utility model compact structure, floor space is little, the cost performance height, maintenance cost is low, anticorrosion, antirust, good seal performance, reliability height, be used for killing when fire-fighting can prevent pump startup effectively the generation of phenomenon, be used for high building fire fighting water supply and can save the capital construction cost.The utility model is particularly useful for large-scale industrial production.
Description of drawings
Accompanying drawing is the structural representation of a kind of multistage centrifugal pump of the present utility model.
Embodiment
Referring to accompanying drawing, a kind of multistage centrifugal pump of the present utility model is equipped with support 1, settles the motor 2 of 2950 rotating speeds on support 1 top, settles folder shell-type coupling 3 and main shaft 4 in support 1, cancelled the bearing of traditional usefulness, folder shell-type coupling links motor reel and main shaft 4 rigidity.At the installing of support 1 bottom Spit Section 5, stage casing 6 and inlet segment 7.
In main shaft 4 bottoms several grades of impellers 8 and stator 9 are installed, are taked the multi-stage impeller collocation form.Impeller 8 comprises impeller 8 ' and other grade impeller 8 ", the diameter of impeller 8 ' is greater than other grade impeller 8 " diameter.Impeller 8 ' is than other grades impeller 8 " the lift height, can repeatedly cut, form multiple lift to cooperate.The specific speed of impeller 8 ' is lower, and its cutting is little to the influence of efficient, and the whole efficiency of pump is improved.Each grade impeller 8 all has big or small several configuration according to the difference of its impeller diameter.
Inlay the water lubriucated bearing 10 of band tank in each grade stator 9, effectively the fricative heat of equalizer bearing.Water lubriucated bearing 10 supporting spindles 4 bottoms.Installing inter-stage cover 11 between water lubriucated bearing 10 and main shaft 4, inter-stage overlaps 11 outer surfaces and is coated with 0.1mm chromium layer, to prolong the working life of easily damaged parts.Stator 9 has been cancelled cover plate, and stator 9 forms stator diffusion cavity with stage casing 6, helps improving the surface quality of 9 castings like this in production in enormous quantities, and then improves the hydraulic efficiency of pump.
The afterbody of this centrifugal pump is Spit Section 5, adopts the scroll casing type pumping chamber, and its rated lift is higher than other grades.Adopt the scroll casing type design to reduce by a final stage stator, saved material thus than traditional multistage pump.
Impeller of the present utility model 8 ' and other grade impeller 8 " the diameter of back shroud seal ring 12 greater than the diameter of inlet seal ring 13; be the maze type sealing configuration; cooperate; through accurate theoretical calculation and a large amount of test; the axial force of rotor is eliminated substantially, has guaranteed the stability of pump work with backwater hole, return pipe 14.
Number in the figure 18 is locating studs, the 19th, and mechanical seal cover, the 20th, sleeve nut.
Claims (1)
1. multistage centrifugal pump, it comprises support, motor in the cantilever tip arrangement, coupling of in support, settling and main shaft, Spit Section, stage casing and inlet segment in the frame bottom installing, and several grades of impellers installing in the main shaft bottom and stator, it is characterized in that described coupling is the folder shell-type coupling that makes motor reel and main shaft binding; Described impeller comprises impeller and other grade impeller, and the diameter of impeller is greater than the diameter of other grade impeller; Be inlaid with the water lubriucated bearing of band tank in the described stator, water lubriucated bearing supporting spindle bottom, installing inter-stage cover between water lubriucated bearing and main shaft, stator has been cancelled cover plate, and stator and stage casing form the diffusion cavity; Described Spit Section is the scroll casing type pumping chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228601 CN2604542Y (en) | 2003-01-29 | 2003-01-29 | Multistage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228601 CN2604542Y (en) | 2003-01-29 | 2003-01-29 | Multistage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2604542Y true CN2604542Y (en) | 2004-02-25 |
Family
ID=34164417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03228601 Expired - Fee Related CN2604542Y (en) | 2003-01-29 | 2003-01-29 | Multistage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2604542Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979733A (en) * | 2012-11-07 | 2013-03-20 | 无锡惠山泵业有限公司 | Water pump |
| CN104454558A (en) * | 2014-12-17 | 2015-03-25 | 天津市百利溢通电泵有限公司 | Van fire pump in modular combined structure allowing pump body and driving motor to be separated |
| CN104728123A (en) * | 2015-02-15 | 2015-06-24 | 山东洪涨泵业有限公司 | Vertical multi-stage centrifugal pump and constant-pressure water supply unit |
| CN108506217A (en) * | 2018-03-29 | 2018-09-07 | 芜湖长捷航空动力科技有限责任公司 | A kind of multistage combined centrifugal water pump |
| CN113417857A (en) * | 2021-07-02 | 2021-09-21 | 荏原机械淄博有限公司 | Volute type large-flow high-lift wear-resistant middle-open type multi-stage pump |
-
2003
- 2003-01-29 CN CN 03228601 patent/CN2604542Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979733A (en) * | 2012-11-07 | 2013-03-20 | 无锡惠山泵业有限公司 | Water pump |
| CN104454558A (en) * | 2014-12-17 | 2015-03-25 | 天津市百利溢通电泵有限公司 | Van fire pump in modular combined structure allowing pump body and driving motor to be separated |
| CN104454558B (en) * | 2014-12-17 | 2016-08-24 | 天津市百利溢通电泵有限公司 | A kind of pump with drive the motor can the passenger-cargo carriage fire pump of split modularization composite structure |
| CN104728123A (en) * | 2015-02-15 | 2015-06-24 | 山东洪涨泵业有限公司 | Vertical multi-stage centrifugal pump and constant-pressure water supply unit |
| CN108506217A (en) * | 2018-03-29 | 2018-09-07 | 芜湖长捷航空动力科技有限责任公司 | A kind of multistage combined centrifugal water pump |
| CN113417857A (en) * | 2021-07-02 | 2021-09-21 | 荏原机械淄博有限公司 | Volute type large-flow high-lift wear-resistant middle-open type multi-stage pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2859041Y (en) | Water supplying pump for pressure boiler | |
| CN104564717B (en) | Direct driven high-speed turbine vacuum pump and operation method thereof | |
| CN103225624A (en) | Double-casing symmetric type radial subdivision multiple-stage centrifugal pump | |
| CN201377436Y (en) | Structure for double-suction multistage horizontal split pump | |
| CN2604542Y (en) | Multistage centrifugal pump | |
| CN203214340U (en) | Double-shell symmetric radially-split multistage centrifugal pump | |
| CN2775360Y (en) | Support type submerged pump | |
| CN1815033A (en) | High-pressure spiral-coil pump | |
| CN2859040Y (en) | High-pressure self-balancing two-housing segment centrifugal pump | |
| CN208203554U (en) | A kind of low pressure and mass flow compact Quimby pump | |
| CN2756872Y (en) | Vertical split tubular centrafugal compressor | |
| CN201148980Y (en) | Barrel body type single-suction multilevel impeller symmetrical diffuser-type centrifugal pump | |
| CN2816440Y (en) | Axial-force balancing structure of multi-stage centrifugal pump | |
| CN2861560Y (en) | Centrifugal type sand pump | |
| CN2654906Y (en) | Vertical multi-stage centrifugal pump | |
| CN1888441A (en) | High-sealing multi-stage pump | |
| CN2718290Y (en) | Single-suction two stage centrifugal pump | |
| CN2849240Y (en) | Stainless steel multistage deep well submerged electric pump | |
| CN2505631Y (en) | Vertical stage pump | |
| CN2285839Y (en) | Dual-volute double-outlet connection pipe built-in electric submersible pump | |
| CN215890471U (en) | Guide vane type single-stage cantilever pump | |
| CN2766067Y (en) | Multiple-stage centrifugal pump capable of dynamically regulating and controlling axial force balanced by balance drum | |
| RU212053U1 (en) | Installation with a submersible centrifugal pump to maintain reservoir pressure | |
| CN212376980U (en) | Anti-cavitation structure of vertical centrifugal pump | |
| CN2378554Y (en) | Self-balancing multi-stage centrifugal water pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |