CN202100483U - Shield pump with symmetrically distributed impellers - Google Patents
Shield pump with symmetrically distributed impellers Download PDFInfo
- Publication number
- CN202100483U CN202100483U CN2011202093727U CN201120209372U CN202100483U CN 202100483 U CN202100483 U CN 202100483U CN 2011202093727 U CN2011202093727 U CN 2011202093727U CN 201120209372 U CN201120209372 U CN 201120209372U CN 202100483 U CN202100483 U CN 202100483U
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- CN
- China
- Prior art keywords
- impeller
- urceolus
- pump
- pump body
- pump housing
- 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
- 230000000694 effects Effects 0.000 claims description 4
- 230000000153 supplemental effect Effects 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 1
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a shield pump with symmetrically distributed impellers, which comprises a suction end, a pump body, a front impeller, a rear impeller, a front guide vane, a rear guide vane, a front auxiliary bearing, a rear auxiliary bearing, a front outer cylinder, a rear outer cylinder and a shield motor. Two sides of the pump body are respectively connected with the front outer cylinder and the rear outer cylinder, the other end of the front outer cylinder is connected with the suction end, and the other end of the rear outer cylinder is connected with the shield motor. The front impeller and the rear impeller which are arranged on an extending shaft of a motor rotor are respectively located on two sides of the pump body, and the directions of the suction opening of the front impeller and the suction opening of the rear impeller are opposite. When the shield pump with the symmetrically distributed impellers works, fluid enters the front impeller arranged on the front lateral side of the pump body through the suction end, then enters the rear impeller arranged on the rear lateral side of the pump body through a gap formed between the guide vanes and the outer cylinders, and is discharged through the pump body. The pressure difference acting on the impellers arranged on two sides of the pump body is not changed, so the shaft thrust acting on the rotor is not changed along with changes of the working conditions. Accordingly, the working range of the pump is enlarged, the bearings are effectively protected, and service life of the pump is prolonged.
Description
Technical field
The utility model relates to a kind of shielded electric-pump, particularly a kind of impeller symmetric distributed canned motorpump.
Background technique
Present employed canned motorpump is with its complete leak free characteristics; In industries such as chemical industry, medicine, aviation, nuclear power, be used widely; Especially for poisonous, conditions such as burn into is valuable, operating mode danger, the complete leak free advantage of canned motorpump finds full expression.High-lift conveying liquid need adopt multi-stage shield pump, and the axle thrust of multi-stage shield pump all is to adopt the mode of equalizing orifice to carry out balance at present, and this structure has following shortcoming:
Flow, temperature, when viscosity changes, axle thrust will change, the best effective fruit dot of off-axis thrust-balancing, will shorten the working life of bearing.When flow, temperature, viscosity changed greatly, it was badly damaged to cause bearing to take place, and also might cause consequences such as burn-down of electric motor, so can only in very little flow, temperature, range of viscosities, use.
2. with equalizing orifice trunnion shaft thrust, impeller need be provided with back envelope ring, and its axial dimension of multi-stage shield pump of same progression will strengthen, and rotor shaft just needs lengthening, and the rigidity of rotor shaft and intensity will reduce.
To existing problem in the above-mentioned existing technology, a kind of novel impeller symmetric distributed canned motorpump of research and design, existing problem is very necessary in the existing technology thereby overcome.
Summary of the invention
In view of existing problem in the above-mentioned existing technology; The purpose of the utility model is a kind of novel impeller symmetric distributed canned motorpump of research and design, thereby the axle thrust that solves present employed multi-stage shield pump all is to adopt the mode of equalizing orifice to carry out balance, with equalizing orifice trunnion shaft thrust; Impeller need be provided with back envelope ring; Its axial dimension of multi-stage shield pump of same progression will strengthen, and rotor shaft just needs lengthening, and the rigidity of rotor shaft and intensity will reduce.This in addition canned motorpump because flow, temperature, when viscosity changes, axle thrust will change, the best effective fruit dot of off-axis thrust-balancing, will shorten the working life of bearing.When flow, temperature, viscosity changed greatly, it was badly damaged to cause bearing to take place, and also might cause problems such as consequence such as burn-down of electric motor.
The described impeller symmetric distributed of the utility model canned motorpump is formed by sucking end, the pump housing, preceding impeller, back impeller, preceding stator, rear guide vane, preceding auxilliary bearing, the auxilliary bearing in back, preceding urceolus, back urceolus and shield electric machine.Described pump housing both sides are connected with preceding urceolus, back urceolus respectively; The other end of preceding urceolus is connected with the suction end; The other end of back urceolus is connected with shield electric machine; Impeller and back impeller divide to be arranged in pump housing both sides before installing on the shielding motor rotor projecting shaft, and preceding impeller is in the opposite direction with the back suction eye.
Separate by preceding stator between impeller and the preceding urceolus before the utility model is described, separate by rear guide vane between back impeller and the back urceolus, adopt between each stator to be threaded.
The described pump housing arranged outside of the utility model has through hole, and stator is communicated with pump housing front side with gap between the urceolus.
The utility model described pump housing place and front end be respectively arranged with the auxilliary bearing in back and before auxilliary bearing, the rotor projecting shaft of shield electric machine is played the supplemental support effect.
The purpose of the described impeller symmetric distributed of the utility model canned motorpump provides the impeller symmetric distributed canned motorpump that a kind of simple in structure, work axle thrust that rotor bore does not change, can prolong bearing working life with rate-of flow, temperature, viscosity and effectively protects motor, overcomes the deficiency of existing technology.
The described impeller symmetric distributed of the utility model canned motorpump; Its described pump housing arranged outside has through hole; Stator is communicated with pump housing front side with gap between the urceolus, guarantee that medium is through the pressurization of front side impeller after, from then on passage enters into the rear side impeller eye smoothly.
The described impeller symmetric distributed of the utility model canned motorpump and existing technology ratio; All but guarantee effect is constant at epitrochanterian axle thrust under any operating mode; Promptly no matter how flow, temperature, the viscosity of fed sheet of a media change; The axle thrust that acts on rotor is not exerted an influence, protected bearing and motor effectively, prolonged the working life of canned motorpump.
Description of drawings
The utility model has a width of cloth accompanying drawing;
Fig. 1 is an impeller symmetric distributed shield pump structure schematic representation.
Among the figure: 1, suck end 2, preceding auxilliary bearing 3, preceding impeller 4, preceding stator 5, preceding urceolus 6, the auxilliary bearing 7 in back, the pump housing 8, rear guide vane 9, back impeller 10, back urceolus 11, rotor shaft 12, shield electric machine.
Embodiment
The practical implementation of the utility model is for example shown in the accompanying drawing; Described impeller symmetric distributed canned motorpump is formed by sucking end 1, the pump housing 7, preceding impeller 3, back impeller 9, preceding stator 4, rear guide vane 8, preceding auxilliary bearing 2, the auxilliary bearing 6 in back, preceding urceolus 5, back urceolus 10 and shield electric machine 12.The described pump housing 7 both sides are connected with preceding urceolus 5, back urceolus 10 respectively; The other end of preceding urceolus 5 is connected with suction end 1; The other end of back urceolus 10 is connected with shield electric machine 12; Impeller 3 and back impeller 9 divide to be arranged in the pump housing 7 both sides before installing on the shield electric machine 12 rotor projecting shafts 11, and preceding impeller 3 is in the opposite direction with back impeller 9 suction ports.
Separate by preceding stator 4 between impeller 3 and the preceding urceolus 5 before the utility model is described, separate by rear guide vane 8 between back impeller 9 and the back urceolus 10, adopt between each stator to be threaded.
The described pump housing 7 arranged outside of the utility model have through hole, and stator 8 is communicated with the pump housing 7 front sides with gap between the urceolus 10.
The utility model described pump housing 7 places and front end be respectively arranged with the auxilliary bearing 6 in back and before auxilliary bearing 2, the rotor projecting shaft 11 of shield electric machine 12 is played the supplemental support effect.
During the work of the described impeller symmetric distributed of the utility model canned motorpump; Fed sheet of a media gets into preceding impeller 3 from sucking end 1; After pressurizeing successively by preceding impeller 3; Gap between through hole through the pump housing 7 arranged outside, rear guide vane 8 and the back urceolus 10 gets into back impeller 9, through after after impeller 9 pressurizes successively, by the pump housing 7 discharges.Because the preceding impeller 3 of the pump housing 7 both sides, back impeller 9 quantity equate that suction port is in the opposite direction, no matter how operating mode changes, and acts on the axial force equal and opposite in direction on 7 liang of prelateral lobe wheels 3 of the pump housing, the back impeller 9, and in the opposite direction, it can not change with value.
Claims (4)
1. an impeller symmetric distributed canned motorpump is formed by sucking end (1), the pump housing (7), preceding impeller (3), back impeller (9), preceding stator (4), rear guide vane (8), preceding auxilliary bearing (2), the auxilliary bearing (6) in back, preceding urceolus (5), back urceolus (10) and shield electric machine (12); It is characterized in that the described pump housing (7) both sides are connected with preceding urceolus (5), back urceolus (10) respectively; The other end of preceding urceolus (5) is connected with suction end (1); The other end of back urceolus (10) is connected with shield electric machine (12); Impeller (3) and back impeller (9) divided to be arranged in the pump housing (7) both sides before shield electric machine (12) rotor projecting shaft (11) go up to be installed, and preceding impeller (3) and after impeller (9) suction port in the opposite direction.
2. impeller symmetric distributed canned motorpump according to claim 1; It is characterized in that separating by preceding stator (4) between described preceding impeller (3) and the preceding urceolus (5); Separate by rear guide vane (8) between back impeller (9) and the back urceolus (10), adopt between each stator to be threaded.
3. impeller symmetric distributed canned motorpump according to claim 1 is characterized in that the described pump housing (7) arranged outside has through hole, and stator (8) is communicated with the pump housing (7) front side with gap between the urceolus (10).
4. impeller symmetric distributed canned motorpump according to claim 1, it is characterized in that the described pump housing (7) is located and front end be respectively arranged with the auxilliary bearing (6) in back and before auxilliary bearing (2), the rotor projecting shaft (11) of shield electric machine (12) is played the supplemental support effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202093727U CN202100483U (en) | 2011-06-20 | 2011-06-20 | Shield pump with symmetrically distributed impellers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202093727U CN202100483U (en) | 2011-06-20 | 2011-06-20 | Shield pump with symmetrically distributed impellers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100483U true CN202100483U (en) | 2012-01-04 |
Family
ID=45386498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202093727U Expired - Fee Related CN202100483U (en) | 2011-06-20 | 2011-06-20 | Shield pump with symmetrically distributed impellers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100483U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019050A (en) * | 2014-05-29 | 2014-09-03 | 安徽银龙泵阀股份有限公司 | Efficient combined pump core |
| CN106907326A (en) * | 2016-08-30 | 2017-06-30 | 合肥新沪屏蔽泵有限公司 | A kind of load carrying type very-high-lift canned motor pump |
| CN111810439A (en) * | 2020-08-18 | 2020-10-23 | 大连海密梯克泵业有限公司 | Anti-dead-bearing structure of serial multistage pump sliding bearing and multistage canned motor pump |
| CN111927787A (en) * | 2020-08-18 | 2020-11-13 | 大连海密梯克泵业有限公司 | Multistage canned motor pump with inner loop hole |
-
2011
- 2011-06-20 CN CN2011202093727U patent/CN202100483U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019050A (en) * | 2014-05-29 | 2014-09-03 | 安徽银龙泵阀股份有限公司 | Efficient combined pump core |
| CN106907326A (en) * | 2016-08-30 | 2017-06-30 | 合肥新沪屏蔽泵有限公司 | A kind of load carrying type very-high-lift canned motor pump |
| CN111810439A (en) * | 2020-08-18 | 2020-10-23 | 大连海密梯克泵业有限公司 | Anti-dead-bearing structure of serial multistage pump sliding bearing and multistage canned motor pump |
| CN111927787A (en) * | 2020-08-18 | 2020-11-13 | 大连海密梯克泵业有限公司 | Multistage canned motor pump with inner loop hole |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20160620 |