CN2781052Y - Vertical multi-stage outer circulation canned motor pump - Google Patents
Vertical multi-stage outer circulation canned motor pump Download PDFInfo
- Publication number
- CN2781052Y CN2781052Y CN 200520040129 CN200520040129U CN2781052Y CN 2781052 Y CN2781052 Y CN 2781052Y CN 200520040129 CN200520040129 CN 200520040129 CN 200520040129 U CN200520040129 U CN 200520040129U CN 2781052 Y CN2781052 Y CN 2781052Y
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- China
- Prior art keywords
- electric machine
- multistage pump
- rotor
- subassembly
- outer circulation
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- Expired - Fee Related
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Abstract
The utility model relates to a vertical multistage outer circular shielding pump. Conventional vertical multistage pumps use general motors and have the problems of large work noise, large vibrations, etc. The shielding pump comprises a multistage pump subassembly and a motor subassembly, wherein the motor subassembly comprises a main motor shaft, a rotor wound on the main motor shaft and a stator surrounding the periphery of the rotor. A shielding sleeve is arranged between the stator and the rotor and forms space for isolating the stator and the rotor. The main motor shaft extends downwards for forming the main shaft of the multistage pump subassembly. The vertical multistage outer circular shielding pump also comprises an outer circular pipe, wherein one end of the outer circular pipe is connected with the spitting section of the multistage pump subassembly and the other end is connected with the upper end of the motor subassembly. The space formed by the shielding sleeve in the motor subassembly and the spitting section of the multistage pump subassembly are communicated. A tail stage impeller in the multistage pump subassembly is provided with a balance hole. The space formed by the shielding sleeve is communicated with the balance hole on the tail stage impeller.
Description
Technical field
The utility model relates in particular to the vertical multi-stage outer circulation canned motorpump that has adopted the outer circulation shield electric machine relevant for MODEL VERTICAL MULTISTAGE PUMP.
Background technique
Fig. 2 shows the structural representation of traditional MODEL VERTICAL MULTISTAGE PUMP, and it is made of two parts, and the figure basifacial is a MODEL VERTICAL MULTISTAGE PUMP assembly 210, and top is electric machine assembly 220.
MODEL VERTICAL MULTISTAGE PUMP assembly 210 comprises three grades of impellers 211,212 and 213, and these three grades of impellers 211,212 and 213 are connected on the multistage pump main shaft 214 by metallic bond.First stage impeller 211 places at multi-stage impeller are provided with suction casing 215, and impeller 213 places at multi-stage impeller are provided with Spit Section 216.Suction casing 215, Spit Section 216 and stage casing 217 link together by turnbuckle 218.
The shortcoming of conventional this MODEL VERTICAL MULTISTAGE PUMP is that noise is bigger.Owing to will produce a large amount of heats during machine operation, for guaranteeing the motor proper functioning, therefore lead to parts such as in motor, adopting fan usually and dispel the heat, cause a large amount of noises.In addition, owing to connect by coupling 223 between machine shaft 222 and the multistage pump main shaft 214, be difficult to guarantee that diaxon is concentric fully, therefore, between centers is non-will to produce vibration, the noise of increasing with one heart.
The model utility content
Edge this, the purpose of this utility model is to provide a kind of vertical multi-stage outer circulation type canned motorpump of novel structure, compares with traditional multistage pump, has little, the steady operation and other merits of noise.
According to above-mentioned purpose, vertical multi-stage outer circulation type canned motorpump of the present utility model comprises: multistage pump assembly and electric machine assembly, it is characterized in that,
Described electric machine assembly comprises electric machine main shaft, be around in the rotor of described electric machine main shaft and around the stator of described rotor periphery, be provided with housing between described stator and described rotor, this housing forms one and makes the space that isolates between described stator and the described rotor; Described electric machine main shaft extends downwards, form the main shaft of described multistage pump assembly, described vertical multi-stage outer circulation type canned motorpump also comprises an outer circulating tube, described outer circulating tube one end links to each other with described multistage pump assembly Spit Section, the other end links to each other with the upper end of described electric machine assembly, is communicated with under the space that the housing in the described electric machine assembly is formed and the Spit Section of described multistage pump assembly; Offer equalizing orifice on the impeller in the described multistage pump assembly, the space that described housing forms is connected with the equalizing orifice on the described impeller.。
In above-mentioned vertical multi-stage outer circulation type canned motorpump,, be provided with an outlet valve in the upper end of described electric machine assembly.
In above-mentioned vertical multi-stage outer circulation type canned motorpump, on the suction side of described multistage pump assembly, offer overflow hole.
As mentioned above, improvement of the present utility model is electric machine main shaft and multistage pump integrated spindle axis are formed, and has eliminated in traditional technology many axles are connected the non-concentric phenomenon that produces by coupling.In addition, will motor be cooled off, and this structure all is immersed in the liquid rotor of shield electric machine, therefore, greatly reduces the operational noise of motor by liquid being imported to shield electric machine inside.
Description of drawings
Fig. 1 is the structural representation of vertical multi-stage outer circulation type canned motorpump of the present utility model;
Fig. 2 is the structural representation of traditional MODEL VERTICAL MULTISTAGE PUMP.
Embodiment
Generally, vertical multi-stage outer circulation type canned motorpump of the present utility model is similar to traditional MODEL VERTICAL MULTISTAGE PUMP, is made of two-part: MODEL VERTICAL MULTISTAGE PUMP assembly 110 and outer circulation shield electric machine assembly 120.
The MODEL VERTICAL MULTISTAGE PUMP assembly of the structure of MODEL VERTICAL MULTISTAGE PUMP assembly 110 and routine shown in Figure 2 is basic identical, comprises that three grades of impellers 111,112 and 113,111 are first stage impeller, and 112 is secondary impeller, and 113 is impeller.Though should be appreciated that in the present embodiment, the structure of three grades of impellers has been described, can also suitably increase or reduce impeller progression as required.These impellers all are fixedly attached on the main shaft 114 by metallic bond.
When the impeller high speed rotating, suction port place at first stage impeller 111 forms vacuum, liquid sucks from the suction casing 115 of MODEL VERTICAL MULTISTAGE PUMP assembly like this, enter into the suction port of secondary impeller 112, in like manner, by the energy of 112 pairs of liquid actings the raising once more of secondary impeller liquid, enter into the suction port of impeller 113 by secondary impeller 112, by the effect of impeller 113, liquid is 116 discharges from the Spit Section at last.The suction casing 115 of multi-stage impeller assembly 110, stage casing 117 and Spit Section 116 link together by bolt 118.
Outer circulation shield electric machine assembly 120 comprises electric machine main shaft 114, rotor 121 and stator 122.Rotor 121 is wound on the electric machine main shaft 114 in the mode of coil, and stator 122 is surrounded on rotor 121, and this is conventional electric machine structure.After stator 122 and rotor 121 power up respectively, under the effect of electromagnetic field, rotor 121 will drive electric machine main shaft 114 high speed rotating.Between stator 122 and rotor 121, be provided with housing 123.This housing 123 forms one makes the space that isolates between stator 122 and the rotor 121.Whole electric machine assembly is installed in the housing 124.A key character of the present utility model is, shared one of the main shaft of the main shaft of electric machine assembly and multistage pump assembly.As shown in Figure 1, electric machine main shaft 114 extends downwards always, becomes the main shaft of multistage pump assembly 110.As mentioned above, multi-stage impeller 111,112 and 113 is fixed on this electric machine main shaft 114.
As shown in Figure 1, the utility model also comprises an outer circulating tube 130.One end of this outer circulating tube 140 is connected on the Spit Section 116 of multistage pump assembly 110, and the other end is connected to housing 124 upper ends of electric machine assembly 120.In addition, on the impeller 113 of multistage pump assembly 110, offer equalizing orifice.When the lower end of electric machine assembly 120 with after the upper end of multistage pump assembly 110 links to each other, the lower end, space that housing 123 forms is connected with the equalizing orifice on the impeller 113.So, liquid in the Spit Section 116 can be up by outer circulating tube 140, enter into the upper end of electric machine assembly 120, and enter in the space of housing 123 formation, and downward always, flow into the lower end of electric machine assembly 120, by the equalizing orifice on multistage pump assembly 110 impellers 113 that are attached thereto, get back to the suction port of impeller 113, formed the outer circulation process of liquid.In this outer circulation process of liquid, liquid is during through the housing space between stator 122 and the rotor 121, can play thermolysis to the heat that rotor and stator work produce.Simultaneously, the front slide bearing 125 of fixed electrical machinery main shaft 114, front shaft sleeve 126, forward thrust dish 127 and back sliding bearing 128, rear axle housing 129, back thrust disc 130 all are positioned at the outer circulation space of this liquid, therefore, can be lubricated these mechanisms.
In another preferred embodiment, as shown in Figure 1, can an outlet valve 131 be set at housing 124 tops of electric machine assembly 120.When proper functioning, this outlet valve 131 is in closed condition.When canned motorpump of the present utility model successively works long hours, the phenomenon that gas is assembled to the shield electric machine top in the liquid may appear, produce an air space on the motor top, the liquid level of outer circulation is descended, make the back sliding bearing 128 on the motor top fail to be immersed in the liquid, the lubrication of liquid disappears.At this moment, outlet valve 131 is opened automatically or manually, be discharged the space of assembling, liquid levels rises, and makes liquid soak into back sliding bearing 128 again.
In another preferred embodiment, can on the suction casing 115 of multistage pump assembly 110, offer overflow hole, will be incorporated into through the liquid of first stage impeller 111 superchargings on the water pilot bearing 119, its its be lubricated.
Claims (3)
1, a kind of vertical multi-stage outer circulation type canned motorpump comprises: multistage pump assembly and electric machine assembly, it is characterized in that, electric machine assembly comprises electric machine main shaft, be around in the rotor of described electric machine main shaft and around the stator of described rotor periphery, be provided with housing between described stator and described rotor, this housing forms one and makes the space that isolates between described stator and the described rotor; Described electric machine main shaft extends downwards, form the main shaft of described multistage pump assembly, described vertical multi-stage outer circulation type canned motorpump also comprises an outer circulating tube, described outer circulating tube one end links to each other with described multistage pump assembly Spit Section, the other end links to each other with the upper end of described electric machine assembly, is communicated with under the space that the housing in the described electric machine assembly is formed and the Spit Section of described multistage pump assembly; Offer equalizing orifice on the impeller in the described multistage pump assembly, the space that described housing forms is connected with the equalizing orifice on the described impeller.
2, vertical multi-stage outer circulation type canned motorpump as claimed in claim 1 is characterized in that, in the upper end of described electric machine assembly, is provided with an outlet valve.
3, vertical multi-stage outer circulation type canned motorpump as claimed in claim 1 is characterized in that, offers overflow hole on the suction side of described multistage pump assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520040129 CN2781052Y (en) | 2005-03-14 | 2005-03-14 | Vertical multi-stage outer circulation canned motor pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520040129 CN2781052Y (en) | 2005-03-14 | 2005-03-14 | Vertical multi-stage outer circulation canned motor pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2781052Y true CN2781052Y (en) | 2006-05-17 |
Family
ID=36762254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520040129 Expired - Fee Related CN2781052Y (en) | 2005-03-14 | 2005-03-14 | Vertical multi-stage outer circulation canned motor pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2781052Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680455B (en) * | 2007-04-12 | 2013-02-06 | 弗拉莫工程公司 | Fluid pump system |
-
2005
- 2005-03-14 CN CN 200520040129 patent/CN2781052Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101680455B (en) * | 2007-04-12 | 2013-02-06 | 弗拉莫工程公司 | Fluid pump system |
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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 |