CN105570180A - Shaft sleeve and impeller structure of double-suction centrifugal pump - Google Patents
Shaft sleeve and impeller structure of double-suction centrifugal pump Download PDFInfo
- Publication number
- CN105570180A CN105570180A CN201410532695.8A CN201410532695A CN105570180A CN 105570180 A CN105570180 A CN 105570180A CN 201410532695 A CN201410532695 A CN 201410532695A CN 105570180 A CN105570180 A CN 105570180A
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- impeller
- axle sleeve
- arc
- centrifugal pump
- shaft sleeve
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- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention provides a shaft sleeve and impeller structure of a double-suction centrifugal pump. A shaft sleeve and an impeller of the double-suction centrifugal pump are fitted, and the shaft hole end face of the impeller is connected with the shaft sleeve. The portion, connected with the shaft hole end face of the impeller, on the shaft sleeve is provided with an arc shaft sleeve. The connecting portion of the shaft hole end face of the impeller and the arc shaft sleeve is provided with an impeller arc portion. The arc shaft sleeve and the impeller arc portion are the same as or close to each other in radian and form a smooth transition arc face. By the adoption of the shaft sleeve and impeller structure of the double-suction centrifugal pump, the problem that an obvious step is formed easily can be solved; and through the streamline form of the bonding portion of the impeller and the shaft sleeve of the double-suction centrifugal pump, liquid flow resistance is reduced, and the efficiency of the double-suction centrifugal pump is improved.
Description
Technical field
The present invention relates to the axle sleeve of pump and the structure of impeller, especially a kind of impeller of double suction type centrifugal pump and axle sleeve structure.
Background technique
Domestic existing double suction type centrifugal pump, there is obvious step the joint of axle sleeve and impeller.Generally include pump cover, outer bearing parts, external sealed parts, sleeve nut, impeller, the pump housing, impeller key, interior sealed member, inner bearing parts, axle, described impeller and axle adopt conical shaft hole matching, assembling and the dismounting of impeller and axle can be facilitated, eliminate the gap between impeller and axle completely, even just impeller can be fixed without axle sleeve in the major part end of circular cone, but, this structure makes the different diameters of the joint of axle and impeller larger, the obvious step of easy formation, step can strengthen the resistance of current, and the efficiency that will improve double suction type centrifugal pump will take one thing with another, will from the details of pump structure, etc. various be unfavorable for the factor of flow of fluid go improve, comprise the water inlet place of double suction type centrifugal pump.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of axle sleeve and blade wheel structure of double suction type centrifugal pump, the problem easily forming obvious step can be solved, by the impeller of double suction type centrifugal pump and the streamline of axle sleeve binding site, reduce liquid flowing resistance, improve the efficiency of double suction type centrifugal pump.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of axle sleeve of double suction type centrifugal pump and blade wheel structure,: the axle sleeve of double suction type centrifugal pump matches with impeller, the axis hole end face of impeller is connected with axle sleeve, axle sleeve is provided with arc axle sleeve with the joint of the axis hole end face of impeller, the axis hole end face of impeller and the joint of arc axle sleeve are provided with impeller arc part, and arc axle sleeve is equal with the radian of impeller arc part or close, form an arc shaped surface seamlessly transitted.
When the radian of arc axle sleeve and impeller arc part is close, the difference of both radians is less than 1mm.
The axle sleeve of double suction type centrifugal pump provided by the invention and blade wheel structure, when the axle sleeve of double suction pump and impeller link together, the end face of shaft bush of double suction type centrifugal pump is pressed in impeller end face, the axis hole end face of impeller is connected with axle sleeve, the radian of arc axle sleeve is equal with the radian of impeller arc part or close, when end face of shaft bush is pressed onto the axis hole end face of impeller, when two end faces interconnect, axle sleeve arc part and impeller arc part form an arc shaped surface seamlessly transitted.The present invention is due in the axle sleeve of double suction type centrifugal pump and the joint of impeller, be there is no seamlessly transitting of step, this position in pump can be reduced, because runner break-in and sectional area change, the inverse pressure reduction caused or eddy current are main local resistance, improve the working efficiency of double suction pump.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is structural representation of the present invention.
Embodiment
As in Fig. 1, a kind of axle sleeve of double suction type centrifugal pump and blade wheel structure, the axle sleeve 2 of double suction type centrifugal pump matches with impeller 1, the axis hole end face of impeller 1 is connected with axle sleeve 2, axle sleeve 2 is provided with arc axle sleeve 3 with the joint of the axis hole end face of impeller 1, the axis hole end face of impeller 1 and the joint of arc axle sleeve 3 are provided with impeller arc part 4, and arc axle sleeve 3 is equal with the radian of impeller arc part 4 or close, form an arc shaped surface seamlessly transitted.
When arc axle sleeve 3 is close with the radian of impeller arc part 4, the difference of both radians is less than 1mm.
When the axle sleeve 2 of double suction pump links together with impeller 1, the end face of shaft bush of double suction type centrifugal pump is pressed in impeller end face, the axis hole end face of impeller 1 is connected with axle sleeve 1, the radian of arc axle sleeve 3 is equal with the radian of impeller arc part 4 or close, when end face of shaft bush is pressed onto the axis hole end face of impeller, when two end faces interconnect, axle sleeve arc 3 position and impeller arc part 4 form an arc shaped surface seamlessly transitted.The present invention is due in the axle sleeve of double suction type centrifugal pump and the joint of impeller, be there is no seamlessly transitting of step, this position in pump can be reduced, because runner break-in and sectional area change, the inverse pressure reduction caused or eddy current are main local resistance, improve the working efficiency of double suction pump.
Claims (2)
1. the axle sleeve of a double suction type centrifugal pump and blade wheel structure, it is characterized in that: the axle sleeve (2) of double suction type centrifugal pump matches with impeller (1), the axis hole end face of impeller (1) is connected with axle sleeve (2), on axle sleeve (2) and the joint of the axis hole end face of impeller (1) is provided with arc axle sleeve (3), the axis hole end face of impeller (1) and the joint of arc axle sleeve (3) are provided with impeller arc part (4), arc axle sleeve (3) is equal or close with the radian of impeller arc part (4), forms an arc shaped surface seamlessly transitted.
2. the axle sleeve of double suction type centrifugal pump according to claim 1 and blade wheel structure, is characterized in that: when arc axle sleeve (3) is close with the radian of impeller arc part (4), the difference of both radians is less than 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532695.8A CN105570180A (en) | 2014-10-11 | 2014-10-11 | Shaft sleeve and impeller structure of double-suction centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410532695.8A CN105570180A (en) | 2014-10-11 | 2014-10-11 | Shaft sleeve and impeller structure of double-suction centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105570180A true CN105570180A (en) | 2016-05-11 |
Family
ID=55880683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410532695.8A Pending CN105570180A (en) | 2014-10-11 | 2014-10-11 | Shaft sleeve and impeller structure of double-suction centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105570180A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701490A (en) * | 2017-10-31 | 2018-02-16 | 安徽腾龙泵阀制造有限公司 | A kind of pump shaft axle sleeve for double entry pump |
-
2014
- 2014-10-11 CN CN201410532695.8A patent/CN105570180A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107701490A (en) * | 2017-10-31 | 2018-02-16 | 安徽腾龙泵阀制造有限公司 | A kind of pump shaft axle sleeve for double entry pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |
|
| WD01 | Invention patent application deemed withdrawn after publication |