CN2392931Y - Multi-stage centrifugal pump - Google Patents
Multi-stage centrifugal pump Download PDFInfo
- Publication number
- CN2392931Y CN2392931Y CN 99251236 CN99251236U CN2392931Y CN 2392931 Y CN2392931 Y CN 2392931Y CN 99251236 CN99251236 CN 99251236 CN 99251236 U CN99251236 U CN 99251236U CN 2392931 Y CN2392931 Y CN 2392931Y
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- CN
- China
- Prior art keywords
- impeller
- pump
- motor
- pump housing
- low voltage
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- Expired - Fee Related
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Abstract
The utility model relates to a novel multi-stage centrifugal pump. The utility model is characterized in that a water sleeve cooling type motor with two extended shafts is used as power; subassemblies such as a pump impeller, a main shaft, a pump body, etc. are divided into two parts and are distributed on both sides of the motor according to the distributing principle that an inlet of the impeller is opposite to the vector direction of axial force, which is favorable for realizing the basic balance of the axial force. Compared with the single side assembling structure of traditional pumps and motors, the structure has the advantages of increased machine set efficiency, reduced vibration speed, reduced noise value, simple structure, high standard generalization degree, low failure rate, convenient assembly and maintenance, high efficiency, energy saving, low noise, etc., and besides, a pump axial force balancing device and an angle thrust ball bearing can be saved.
Description
The utility model belongs to the pump class, relates to a kind of efficient, energy-conservation, low noise multistage centrifugal pump.
Existing multistage pump generally comprises scroll casing type multistage pump and multistage segmental type pump.The scroll casing type multistage pump adopts the middle open type structure, and maintenance is convenient, and helps acting on epitrochanterian axial force by the elimination of impeller symmetric arrangement, but this kind structure casting, processing difficulties, and external form complexity, heaviness, the generalization degree is low, open the face seal difficulty in during high pressure, so limited its development.Multistage sectional centrifugal pump is a kind of compact structure, help improving standardization, the structural type of generalization degree, but the existing structure of this kind pump is difficult to realize the impeller symmetric arrangement, balance of axial force need lean on Balance disc or balancing drum to realize, for eliminating remaining axial force and preventing the balanced controls fault, still need the angle thrust ball bearing that can bear certain axial force is set, so having increased the volumetric loss of pump consumes with machinery, vibration is big during use, noise is high, efficient is low, has limited pump to speed up, miniaturization development.
The purpose of this utility model is exactly on the basis of existing pump type, and a kind of compact structure, standardization are provided, generalization degree height, and impeller distributes by a certain percentage, efficient, energy-conservation, the low noise multistage centrifugal pump of axial force symmetric arrangement.
The purpose of this utility model is achieved in that 1, adopts a kind of twin shaft to stretch motor is power, and the motor shaft extension can specially contain water pump spindle, also can adopt the standard shaft extension to connect with water pump spindle by coupling; 2, members such as water pump main shaft, impeller are divided into two and are arranged in the motor both sides by a certain percentage, and both sides axial force direction is opposite, and size is equal substantially.
In more detail, this multistage centrifugal pump comprises compositions such as the pump housing, motor, impeller, and impeller is placed on the axle of motor, and impeller is in the pump housing.Motor is that twin shaft is stretched motor, water pump vane is placed in twin shaft according to the import principle opposite with the axial force direction vector and stretches the motor both sides, the impeller at the two ends of motor shaft constitutes low voltage side impeller and high pressure side impeller, the pump housing of water pump feed-water end is the low voltage side pump housing, the impeller that is placed in the low voltage side pump housing is the low voltage side impeller, open in the low voltage side on the low voltage side pump housing outlet high pressure side import on the high pressure side pump housing of externally connected pipe and water pump and link to each other, being placed in the interior impeller of the high pressure side pump housing is the high pressure side impeller.
Effect of the present utility model is embodied in: 1, adopting twin shaft to stretch motor is power, has saved motor blower fan, fan housing, the power consumpiton and the air channel noise that have produced when having eliminated fan blade work; 2, water pump vane is arranged in the motor both sides by a certain percentage according to the principle that back side pressure equates, direction is opposite, not only can save and be used for heeling pump balance of axial force drum and Balance disc, eliminate this partial volume loss and rotor consumption, improve pump efficiency, and can eliminate balanced controls because of the noise of rotor friction with the too big generation of reflow pipe pressure reduction; 3, water pump rotor is divided into two, and has improved the rigidity of axle, has reduced the rotor body friction and collision that produce because of the processing and assembling accumulated error, has reduced the vibration that therefore produces and has consumed with machinery, has improved the service condition of water lubrication guide bearing; 4, saved the angle thrust ball bearing on the water pump spindle, eliminated noise and vibration, reduced this part machinery and consumed because of electric machine main shaft and water pump main shaft processing and assembling decentraction operation generation; 5, the residue axial force after abundant balance is born by motor bearings, and radial force is born jointly by motor bearings or motor bearings and water pump water lubrication guide bearing, thereby has cancelled the angle thrust ball bearing; 6, under the high-lift service condition, adopt impeller inlet that import is arranged in the mounting type of motor both sides, the axle envelope is placed in import and nearly 1/2 pressure place respectively, can improve axle envelope effect significantly and prolong axle and seal working life; 7, only need the runner sense of rotation of change motor case and water pump one lateral lobe wheel, stator, the pump housing etc., just can realize the transformation of existing pump type easily, water pump structure is simple, the part generalization, and the standardization level height, I﹠M is all very convenient.
Below in conjunction with drawings and Examples the utility model is further described.
Fig. 1 is the utility model embodiment 1 a structural representation.
Fig. 2 is the utility model embodiment 2 a structural representation.
Fig. 3 is the utility model embodiment 3 a structural representation.
Embodiment 1
In Fig. 1, water pump high pressure side main shaft 1 is stretched motor 5 two ends shaft extensions with water pump low voltage side main shaft 2 through coupling 3,4 and twin shaft and is connected.Low voltage side impeller 6 is arranged on the water pump spindle of both sides according to import and axial force direction vector principle in opposite directions with high pressure side impeller 7.During work, fed sheet of a media is in water pump low voltage side import 8 enters the low voltage side combination pump housing 9, after the pressurization of 1 to n level impeller, flow out, in externally connected pipe 11, high pressure side import 12 enter the high pressure side combination pump housing 13, after the pressurization of 1 to n level impeller, flow out by high pressure side outlet 14 by low voltage side outlet 10.When high pressure shaft extension end 15 place's pressure ratio low pressure shaft extension end 16 place's pressure greatly more for a long time, can increase impeller quantity in low voltage side, in a basic balance to realize the both sides axial force.Fed sheet of a media by draw at pump housing place behind the low voltage side first order impeller enters in the motor housing water jacket 19 through liquid inlet pipe 17, flow-limiting valve 18, in reflow pipe 20 returns the low voltage side inlet pump housing.Embodiment 2
In Fig. 2, water pump high pressure side main shaft 1 is stretched motor 5 two ends shaft extensions with water pump low voltage side main shaft 2 through coupling 3,4 and twin shaft and is connected.Low voltage side impeller 6 and high pressure side impeller 7 are arranged on the water pump spindle of both sides according to import and the opposing principle of axial force direction vector.During work, fed sheet of a media is in water pump low voltage side import 8 enters the low voltage side combination pump housing 9, after the pressurization of 1 to n level impeller, flow out, in externally connected pipe 11, high pressure side import 12 enter the high pressure side combination pump housing 13, after the pressurization of 1 to n level impeller, flow out by high-pressure outlet 14 by low voltage side outlet 10.When the pressure at pressure ratio low pressure shaft extension end 16 places at high pressure shaft extension end 15 places greatly more for a long time, can increase impeller quantity in the high pressure side, in a basic balance to realize the both sides axial force.By the fed sheet of a media of drawing in the pump housing behind the low voltage side first order impeller, through liquid inlet pipe 17, flow-limiting valve 18 enters in the motor housing water jacket 19, in liquid return pipe 20 returns the low voltage side inlet pump housing.Embodiment 3
In Fig. 3, water pump low voltage side impeller 6 is installed in twin shaft respectively with high pressure side impeller 7 and stretches on the motor 5 both sides shaft extensions.During work, fed sheet of a media is flowed out by low voltage side outlet 10 after the impeller pressurization in low voltage side import 4 enters the low voltage side pump housing 9, enters in the high pressure side pump housing 13 through externally connected pipe 11, high pressure side import 12, is flowed out by high pressure side outlet 1 after the impeller pressurization.For the balance pressure at two ends can be at low voltage side impeller place extension equalizing orifice.The fed sheet of a media of being drawn by the low voltage side outlet port enters in the motor housing water jacket 3 through liquid inlet pipe 2, flow-limiting valve 8, in liquid return pipe 14 returns the low voltage side inlet pump housing.
Claims (4)
1, a kind of multistage centrifugal pump, comprise the pump housing, motor, compositions such as impeller, impeller is placed on the axle of motor, impeller is in the pump housing, it is characterized in that motor is that twin shaft is stretched motor (5), water pump vane is placed in twin shaft according to the import principle opposite with the axial force direction vector and stretches motor (5) both sides, the impeller at the two ends of motor shaft constitutes low voltage side impeller (6) and high pressure side impeller (7), the pump housing of water pump feed-water end is the low voltage side pump housing, the impeller that is placed in the low voltage side pump housing (9) is low voltage side impeller (6), open in the high pressure side import (12) of the low voltage side on the low voltage side pump housing (9) outlet (10) on the high pressure side pump housing (13) of externally connected pipe (11) and water pump and link to each other, being placed in the interior impeller of the high pressure side pump housing (13) is high pressure side impeller (7).
2, according to the described how centrifugal level pump of claim 1, it is characterized in that impeller takes import to import, axial force direction vector direction in opposite directions is installed in twin shaft respectively and stretches on motor (5) two end axles.
3, according to the described multistage centrifugal pump of claim 1, it is characterized in that impeller takes the import of the import back of the body, the opposing direction of axial force direction vector is installed in twin shaft respectively and stretches motor (5) both sides.
4, according to the described how centrifugal level pump of claim 3, it is characterized in that the pump housing adopts the spiral case pump housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251236 CN2392931Y (en) | 1999-10-15 | 1999-10-15 | Multi-stage centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251236 CN2392931Y (en) | 1999-10-15 | 1999-10-15 | Multi-stage centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2392931Y true CN2392931Y (en) | 2000-08-23 |
Family
ID=34035767
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99251236 Expired - Fee Related CN2392931Y (en) | 1999-10-15 | 1999-10-15 | Multi-stage centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2392931Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220985A (en) * | 2011-07-23 | 2011-10-19 | 河北扬天泵业有限公司 | Dry-submersible dual-purpose water pump |
| CN102562614A (en) * | 2012-01-18 | 2012-07-11 | 长沙矿冶研究院有限责任公司 | Non-blocking double-channel pump with large particles |
| CN102619769A (en) * | 2012-04-17 | 2012-08-01 | 江苏乘帆压缩机有限公司 | High-pressure centrifugal fan |
| CN104653474A (en) * | 2015-03-17 | 2015-05-27 | 浙江创美机电有限公司 | Symmetrical high-speed double-suction pump |
| CN106368977A (en) * | 2015-07-23 | 2017-02-01 | 苏尔寿管理有限公司 | Pump for the conveyance of a fluid with varying viscosity |
| CN106837821A (en) * | 2017-04-11 | 2017-06-13 | 浙江新控泵业有限公司 | Low noise binary self-priming combination pump |
| CN106939905A (en) * | 2017-05-17 | 2017-07-11 | 江苏大学 | A kind of self-balancing goes with each other all the time centrifugal pump structure |
| CN114857040A (en) * | 2022-06-24 | 2022-08-05 | 四川省机械研究设计院(集团)有限公司 | Centrifugal pump, centrifugal pump control system and control method and high-speed centrifugal pump unit |
-
1999
- 1999-10-15 CN CN 99251236 patent/CN2392931Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220985A (en) * | 2011-07-23 | 2011-10-19 | 河北扬天泵业有限公司 | Dry-submersible dual-purpose water pump |
| CN102562614A (en) * | 2012-01-18 | 2012-07-11 | 长沙矿冶研究院有限责任公司 | Non-blocking double-channel pump with large particles |
| CN102562614B (en) * | 2012-01-18 | 2014-01-01 | 长沙矿冶研究院有限责任公司 | Non-blocking double-channel pump with large particles |
| CN102619769A (en) * | 2012-04-17 | 2012-08-01 | 江苏乘帆压缩机有限公司 | High-pressure centrifugal fan |
| CN104653474A (en) * | 2015-03-17 | 2015-05-27 | 浙江创美机电有限公司 | Symmetrical high-speed double-suction pump |
| CN106368977A (en) * | 2015-07-23 | 2017-02-01 | 苏尔寿管理有限公司 | Pump for the conveyance of a fluid with varying viscosity |
| CN106837821A (en) * | 2017-04-11 | 2017-06-13 | 浙江新控泵业有限公司 | Low noise binary self-priming combination pump |
| CN106939905A (en) * | 2017-05-17 | 2017-07-11 | 江苏大学 | A kind of self-balancing goes with each other all the time centrifugal pump structure |
| CN114857040A (en) * | 2022-06-24 | 2022-08-05 | 四川省机械研究设计院(集团)有限公司 | Centrifugal pump, centrifugal pump control system and control method and high-speed centrifugal pump unit |
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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 |