CN202370860U - Built-in centrifugal pump of motor - Google Patents
Built-in centrifugal pump of motor Download PDFInfo
- Publication number
- CN202370860U CN202370860U CN2011204844561U CN201120484456U CN202370860U CN 202370860 U CN202370860 U CN 202370860U CN 2011204844561 U CN2011204844561 U CN 2011204844561U CN 201120484456 U CN201120484456 U CN 201120484456U CN 202370860 U CN202370860 U CN 202370860U
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- China
- Prior art keywords
- centrifugal pump
- impeller
- ante
- chamber
- communicated
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- 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
The utility model discloses a built-in centrifugal pump of a motor. The built-in centrifugal pump is characterized by comprising a shell, wherein the shell is provided with a front cavity and a rear cavity, and the front cavity is communicated with the rear cavity; the shell is provided with a liquid inlet communicated with the front cavity; an impeller of the centrifugal pump is arranged in the front cavity; the shell is provided with a liquid outlet communicated with the rear cavity; and the rear cavity is internally provided with a rotor and a stator, and the rotor is connected with the impeller of the centrifugal pump through a motor shaft. According to the utility model, the sealing of the bearing is omitted, so that the leakage of the sealed part of the bearing is eliminated; and all sealing members are in a static-pressure sealing state without shift type abrasion, so that seal rings are prevented from damage dangers caused by the abrasion of a rotating body.
Description
Technical field
The utility model relates to a kind of electric motor built-in centrifugal pump.
Background technique
Centrifugal pump of the prior art leans on motor driving work.Impeller is connected with motor output shaft through coupling.Impeller is arranged in the pump housing.Bearing bore is made up of bearing, rotary seal.The extension of impeller shaft is through bearing bore and external relation.Motor is arranged in the electric machine casing.Three shells (chamber) body connects successively.When needs were carried corrosive liquids, the external contacting point of the pump housing and bearing cavity must seal.The sealing difference will cause leak of liquid, both can influence operator ' s health, also pollutes the environment.Because lean on the rotation of motor output shaft rotation impeller, impeller shaft is in the bearing bore housing, to rotate.Be provided with rotating seal ring in the bearing bore housing, seal ring is enclosed within on the axle.Seal ring both need seal the position that each possibly revealed, and need touch with supporting shaft with being coupling again.Transmission shaft spin friction seal arrangement causes seal arrangement wearing and tearing back to occur revealing.Along with the prolongation of service time, the wearing and tearing of seal ring will constantly increase the weight of and seriously reduce sealability and directly cause and can generation leak.
The model utility content
The purpose of the utility model is in order to overcome deficiency of the prior art, and a kind of electric motor built-in centrifugal pump of leaking of can not causing is provided.
For realizing above purpose, the utility model is realized through following technological scheme:
The electric motor built-in centrifugal pump is characterized in that, comprises housing, and housing is provided with ante-chamber and back cavity, and ante-chamber is communicated with back cavity; Housing is provided with liquid entering hole, and liquid entering hole is communicated with ante-chamber; Be provided with centrifugal pump impeller in the ante-chamber; Housing is provided with liquid outlet, and liquid outlet is communicated with back cavity; Be provided with rotor and stator in the back cavity, rotor is connected through motor shaft with centrifugal pump impeller.
Preferably, said housing comprises electric machine casing and pump case; Pump case is connected with electric machine casing; Pump case is provided with ante-chamber; Pump case is provided with liquid entering hole; Electric machine casing is provided with back cavity; Pump case is connected on the protecgulum; Liquid outlet is arranged on the electric machine casing.
Preferably, motor shaft is connected with centrifugal pump impeller through coupling
Preferably, be provided with seal ring between pump case and the electric machine casing.
The utility model is that all component in whole the product have been carried out entire combination, omitted the sealing of impeller shaft-bearing part, reduced the liquid of carrying to the danger of external leakage.Whole product has only three places (liquid entering hole, liquid outlet, tenminal block) to need sealing, and this three place all can adopt hydrostatic seal interface and outside being connected.Cancelled the sealing at impeller shaft-bearing place thus, thereby can not produce the danger of leakage because of the ring wear at impeller shaft-bearing place.
The utility model has omitted the sealing at bearing place, thereby has eliminated the leakage of this part.All Sealings all are to be in the hydrostatic seal state.There are not the wearing and tearing of displacement form.Can not receive the danger of the damage that solid of rotation wearing and tearing produce because of seal ring.
Description of drawings
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with accompanying drawing the utility model is carried out detailed description:
As shown in Figure 1, the electric motor built-in centrifugal pump comprises housing 1, and housing 1 comprises electric machine casing 2 and pump case 3.Pump case 3 is connected with electric machine casing 2.Be provided with seal ring 9 between pump case 3 and the electric machine casing 2.
Pump case 3 is provided with ante-chamber 4.Pump case 3 is provided with liquid entering hole 5.Liquid entering hole 5 is communicated with ante-chamber 4.Be provided with centrifugal pump impeller 6 in the ante-chamber 4.Centrifugal pump impeller 6 can be the multistage centrifugal pump impeller.
Electric machine casing 2 is provided with back cavity 7.Motor casing 2 is provided with liquid outlet 8.Liquid outlet 8 is communicated with back cavity 7.Be provided with stator 11 and rotor 12 in the back cavity 7.
During use, the energising starting electrical machinery, rotor 12 rotations drive centrifugal pump impeller 6 rotations through motor shaft 13, coupling 14.Centrifugal pump impeller 6 rotations can suck liquid in the ante-chamber 4 from liquid entering hole 5, and under the effect of centrifugal pump impeller 6, input in the back cavity 7 and discharge through liquid outlet 8, are delivered to the place to use.The flow direction of liquid and route are shown in arrow among the figure.The utility model can reduce the risk of leakage, especially is fit to be applied to forbid being transferred the occasion of leaked liquid and is used for conveying to the influential liquid of environment, and this product can be used in the refrigerant material of carrying refrigeration used.
Embodiment in the utility model only is used for the utility model is described, and does not constitute the restriction to the claim scope, and other substituting of being equal in fact that those skilled in that art can expect are all in the utility model protection domain.
Claims (4)
1. the electric motor built-in centrifugal pump is characterized in that, comprises housing, and housing is provided with ante-chamber and back cavity, and ante-chamber is communicated with back cavity; Housing is provided with liquid entering hole, and liquid entering hole is communicated with ante-chamber; Be provided with centrifugal pump impeller in the ante-chamber; Housing is provided with liquid outlet, and liquid outlet is communicated with back cavity; Be provided with rotor and stator in the back cavity, rotor is connected through motor shaft with centrifugal pump impeller.
2. electric motor built-in centrifugal pump according to claim 1 is characterized in that said housing comprises electric machine casing and pump case; Pump case is connected with electric machine casing; Pump case is provided with ante-chamber; Pump case is provided with liquid entering hole; Electric machine casing is provided with back cavity; Pump case is connected on the protecgulum; Liquid outlet is arranged on the electric machine casing.
3. electric motor built-in centrifugal pump according to claim 1 and 2 is characterized in that, motor shaft is connected with impeller through coupling.
4. electric motor built-in centrifugal pump according to claim 2 is characterized in that, is provided with seal ring between pump case and the electric machine casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204844561U CN202370860U (en) | 2011-11-28 | 2011-11-28 | Built-in centrifugal pump of motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204844561U CN202370860U (en) | 2011-11-28 | 2011-11-28 | Built-in centrifugal pump of motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202370860U true CN202370860U (en) | 2012-08-08 |
Family
ID=46594565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204844561U Expired - Fee Related CN202370860U (en) | 2011-11-28 | 2011-11-28 | Built-in centrifugal pump of motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202370860U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682319A (en) * | 2021-01-10 | 2021-04-20 | 湖南工匠实创智能机器有限责任公司 | Centrifugal pump for magnetic liquid polishing circulation system |
-
2011
- 2011-11-28 CN CN2011204844561U patent/CN202370860U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682319A (en) * | 2021-01-10 | 2021-04-20 | 湖南工匠实创智能机器有限责任公司 | Centrifugal pump for magnetic liquid polishing circulation system |
| CN112682319B (en) * | 2021-01-10 | 2024-05-31 | 湖南工匠实创智能机器有限责任公司 | Centrifugal pump for magnetic liquid polishing circulation system |
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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: 20120808 Termination date: 20151128 |