CN204082617U - A kind of throttling arrangement for centrifugal pump cavity - Google Patents
A kind of throttling arrangement for centrifugal pump cavity Download PDFInfo
- Publication number
- CN204082617U CN204082617U CN201420360760.9U CN201420360760U CN204082617U CN 204082617 U CN204082617 U CN 204082617U CN 201420360760 U CN201420360760 U CN 201420360760U CN 204082617 U CN204082617 U CN 204082617U
- Authority
- CN
- China
- Prior art keywords
- impeller
- port ring
- stepped cylindrical
- impeller port
- ring
- 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
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Abstract
The utility model relates to a kind of throttling arrangement for centrifugal pump cavity, belongs to mechanical fluid field.In throttling arrangement of the present utility model, impeller port ring is loop configuration, and the inner chamber of impeller port ring is stepped cylindrical hole; The front end of impeller is the stepped cylindrical boss that in profile and impeller port ring, shape matches; The stepped cylindrical boss of wheel nose inserts the stepped cylindrical hole of impeller port ring, makes Spielpassung between the stepped cylindrical boss of wheel nose outer wall and the stepped cylindrical hole of impeller port ring.Throttling arrangement of the present utility model is held between outer wall and impeller port ring inner chamber before the impeller, increase on-way resistance by two seals ring, a decompression chamber of two seals ring causes local resistance, increases the difference pressuring loss of withdrawing fluid, reduce amount of leakage, reach throttling effect.
Description
Technical field
The utility model relates to a kind of throttling arrangement of centrifugal pump cavity, belongs to mechanical fluid field.
Background technique
The throttling arrangement of conventional construction centrifugal pump cavity, as shown in Figure 1, impeller port ring is cirque structure, impeller port ring is set in the front end, impeller installation position of the pump housing by junction of the edges of two sheets of paper screw, Spielpassung between the inner ring of impeller port ring and the outer surface of wheel nose ring part, form a closely spaced annular seal ring, the working solution passing back into wheel nose in work carries out step-down by the annular seal ring between impeller port ring and impeller, thus reaches the restriction effect to backflow working solution.But the annular seal ring place surface friction drag of this throttle structure is little, restriction effect is limited, and when the flow velocity applying the pump housing is higher, the capacity of reflux of working solution is comparatively large, affects the efficiency of transmission of the pump housing.
Model utility content
The purpose of this utility model is that the restriction effect of throttling arrangement in order to solve conventional centrifugal pump cavity is poor, affects the problem of the efficiency of transmission of the pump housing, and provides a kind of throttling arrangement of centrifugal pump cavity of good throttle effect.
The throttling arrangement of a kind of centrifugal pump cavity of the present utility model, comprises the pump housing, pump shaft, impeller, impeller port ring;
Impeller port ring is loop configuration, and the inner chamber of impeller port ring is stepped cylindrical hole;
The front end of impeller is the stepped cylindrical boss that in profile and impeller port ring, shape matches;
The front end, impeller installation position of pump housing front shroud has the annular mounting groove matched with impeller port ring profile, and impeller port ring is arranged in the annular mounting groove of pump housing front shroud, and by junction of the edges of two sheets of paper screw, the pump housing and impeller port ring is fixed; Impeller is connected to pump housing inner chamber by pump shaft, and the stepped cylindrical boss of wheel nose inserts the stepped cylindrical hole of impeller port ring, makes Spielpassung between the stepped cylindrical boss of wheel nose outer wall and the stepped cylindrical hole of impeller port ring.
Beneficial effect:
Throttling arrangement of the present utility model is held between outer wall and impeller port ring inner chamber before the impeller, increase on-way resistance by two seals ring, a decompression chamber of two seals ring causes local resistance, increases the difference pressuring loss of withdrawing fluid, reduce amount of leakage, reach throttling effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of conventional centrifugal pump cavity throttling arrangement;
Fig. 2 is the structural representation of the utility model centrifugal pump cavity throttling arrangement;
Wherein 1-impeller port ring, 2-impeller, the 3-pump housing, 4-junction of the edges of two sheets of paper screw.
Embodiment
Below in conjunction with accompanying drawing, content of the present utility model is described further:
Embodiment
The throttling arrangement of a kind of centrifugal pump cavity of the present utility model, as shown in Figure 2, comprises the pump housing 3, pump shaft, impeller 2, impeller port ring 1;
Impeller port ring 1 is loop configuration, and the inner chamber of impeller port ring 1 is stepped cylindrical hole;
The front end of impeller 2 is the stepped cylindrical boss that in profile and impeller port ring 1, shape matches;
The front end, impeller installation position of the pump housing 3 front shroud has the annular mounting groove matched with impeller port ring 1 profile, and impeller port ring 1 is arranged in the annular mounting groove of the pump housing 3 front shroud, and by junction of the edges of two sheets of paper screw 4, the pump housing 3 is fixed with impeller port ring 1; Impeller 2 is connected to the pump housing 3 inner chamber by pump shaft, and the stepped cylindrical boss of impeller 2 front end inserts the stepped cylindrical hole of impeller port ring 1, makes Spielpassung between the stepped cylindrical boss of impeller 2 front end outer wall and the stepped cylindrical hole of impeller port ring 1.
Claims (1)
1. for a throttling arrangement for centrifugal pump cavity, it is characterized in that: comprise the pump housing, pump shaft, impeller, impeller port ring,
Impeller port ring is loop configuration, and the inner chamber of impeller port ring is stepped cylindrical hole;
The front end of impeller is the stepped cylindrical boss that in profile and impeller port ring, shape matches;
The front end, impeller installation position of pump housing front shroud has the annular mounting groove matched with impeller port ring profile, and impeller port ring is arranged in the annular mounting groove of pump housing front shroud, and by junction of the edges of two sheets of paper screw, the pump housing and impeller port ring is fixed; Impeller is connected to pump housing inner chamber by pump shaft, and the stepped cylindrical boss of wheel nose inserts the stepped cylindrical hole of impeller port ring, makes Spielpassung between the stepped cylindrical boss of wheel nose outer wall and the stepped cylindrical hole of impeller port ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360760.9U CN204082617U (en) | 2014-07-02 | 2014-07-02 | A kind of throttling arrangement for centrifugal pump cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420360760.9U CN204082617U (en) | 2014-07-02 | 2014-07-02 | A kind of throttling arrangement for centrifugal pump cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082617U true CN204082617U (en) | 2015-01-07 |
Family
ID=52175340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420360760.9U Expired - Fee Related CN204082617U (en) | 2014-07-02 | 2014-07-02 | A kind of throttling arrangement for centrifugal pump cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082617U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613016A (en) * | 2015-01-24 | 2015-05-13 | 湖州南丰机械制造有限公司 | Pump head structure used in water pump product in matched mode |
| CN106762674A (en) * | 2016-12-29 | 2017-05-31 | 镇江福泰克流体技术有限公司 | A kind of cantilevered double-runner centrifugal pump |
| WO2021227476A1 (en) * | 2020-05-13 | 2021-11-18 | 佛山市威灵洗涤电机制造有限公司 | Heating pump and dish washing machine |
-
2014
- 2014-07-02 CN CN201420360760.9U patent/CN204082617U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613016A (en) * | 2015-01-24 | 2015-05-13 | 湖州南丰机械制造有限公司 | Pump head structure used in water pump product in matched mode |
| CN106762674A (en) * | 2016-12-29 | 2017-05-31 | 镇江福泰克流体技术有限公司 | A kind of cantilevered double-runner centrifugal pump |
| WO2021227476A1 (en) * | 2020-05-13 | 2021-11-18 | 佛山市威灵洗涤电机制造有限公司 | Heating pump and dish washing machine |
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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: 20150107 Termination date: 20160702 |