CN207598586U - Multi-level pump impeller is accurately positioned adjustment fixing structure - Google Patents
Multi-level pump impeller is accurately positioned adjustment fixing structure Download PDFInfo
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- CN207598586U CN207598586U CN201721709373.1U CN201721709373U CN207598586U CN 207598586 U CN207598586 U CN 207598586U CN 201721709373 U CN201721709373 U CN 201721709373U CN 207598586 U CN207598586 U CN 207598586U
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- accurately positioned
- fixing structure
- adjustment fixing
- taper face
- pump impeller
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Abstract
The utility model provides a kind of multi-level pump impeller and is accurately positioned adjustment fixing structure.Belong to multi-level pump impeller mounting technique field.The utility model includes the tensioning bolt, impeller and the nut that are set on pump shaft, the tensioning bolt bottom outer wall has the first taper face, the impeller inner wall and the second taper face is equipped with the corresponding position of the first taper face, the tensioning bolt is spirally connected with nut and the first taper face and the second taper face form tensioned fit.The utility model can adjust impeller, impeller registration in any position on pump shaft.
Description
Technical field
The utility model belongs to multi-level pump impeller mounting technique field, is related to a kind of multi-level pump impeller and is accurately positioned adjusting admittedly
Determine structure.
Background technology
The fixation of existing impeller substantially goes to fix by flat key, hexagonal axis or splined shaft by spiral compression, impeller it is upper
Lower positioning is mainly by impeller footstalk height or axle sleeve height de-regulation, and such positioning is inaccurate for multistage pump, often on
Lower card impeller phenomenon.
Utility model content
The purpose of this utility model is that regarding to the issue above and defect, providing a kind of multi-level pump impeller, to be accurately positioned adjusting solid
Determine structure.
To achieve the above object, the utility model provides following technical proposal：
A kind of multi-level pump impeller is accurately positioned adjustment fixing structure, including be set on pump shaft tensioning bolt, impeller and
Nut, the tensioning bolt bottom outer wall have the first taper face, the impeller inner wall and corresponding with the first taper face
Position be equipped with the second taper face, the tensioning bolt and nut are spirally connected and the first taper face and the second taper face are formed and be tensioned
Cooperation.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, there is screw thread at the top of the tensioning bolt
Portion, on tensioning bolt and along the open slot through tensioning bolt both ends that is axially arranged with of tensioning bolt.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, the width of the open slot is 2mm.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, first taper face and the second taper face
Taper it is consistent.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, on the impeller and positioned at the second taper face
Top is set there are one being used for and nut is matched screws tight step, and the nut is pressed on after being spirally connected with tensioning bolt and screws tight platform
On rank.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, is equipped between threaded portion and the first taper face
One stress relief groove in a ring.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, the nut is transversal close to impeller one end
Area is less than the cross-sectional area far from impeller one end.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, the nut interior has hollow-out parts.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, the hollow-out parts inner wall is in regular polygon.
It is accurately positioned in adjustment fixing structure in above-mentioned multi-level pump impeller, the hollow-out parts inner wall is in regular hexagon.
Compared with prior art, the utility model advantage is：Impeller, impeller can be adjusted on pump shaft in any position
Registration.
Part is illustrated to embody by the further advantage, target and feature of the utility model by following, and part will also pass through
Research and practice to the utility model and be understood by the person skilled in the art.
Description of the drawings
Fig. 1 is the structure diagram of utility model.
Fig. 2 is the internal structure schematic diagram of the utility model.
In figure：Pump shaft 1, tensioning bolt 2, impeller 3, nut 4, the first taper face 5, the second taper face 6, threaded portion 7, opening
Slot 8 screws tight step 9, stress relief groove 10, hollow-out parts 11.
Specific embodiment
As depicted in figs. 1 and 2, a kind of multi-level pump impeller is accurately positioned adjustment fixing structure, including being set on pump shaft 1
Tensioning bolt 2, impeller 3 and nut 4,2 bottom outer wall of tensioning bolt have the first taper face 5,3 inner wall of impeller
And the second taper face 6 is equipped with 5 corresponding position of the first taper face, the tensioning bolt 2 is spirally connected with nut 4 and the first cone
5 and second taper face 6 of degree face forms tensioned fit.
In the present embodiment, after nut 4 is spirally connected with tensioning bolt 2, impeller 3 is pushed down on, makes the first taper face 5 and the second cone
Degree face 6 forms tensioned fit, and impeller forms tensioning with tensioning bolt and fixes, and tensioning bolt 2 forms tensioning with pump shaft 1 and fixes, real
The now stationary positioned of pump shaft 1, tensioning bolt 2, impeller 3 and nut 4, if desired for adjustment impeller 3 at the position on pump shaft 1, pine
Nut 4 is opened, the axial movement of tensioning bolt 2 and impeller 3 along pump shaft 1, after movement in place, nut 4 screws tight i.e. again with tensioning bolt 2
It can.
The top of tensioning bolt 2 has a threaded portion 7, on tensioning bolt 2 and being axially arranged with through tensioning spiral shell along tensioning bolt 2
The open slot 8 at 2 both ends of bolt.It is preferred that the width of open slot 8 is 2mm.
It is preferred that the first taper face 5 is consistent with the taper of the second taper face 6.Nut 4 is close to the cross-sectional area of 3 one end of impeller
Less than the cross-sectional area far from 3 one end of impeller.
It is set on impeller 3 and positioned at the top of the second taper face 6 there are one being used for and nut 4 is matched screws tight step 9, it is described
Nut 4 and tensioning bolt 2 be spirally connected after be pressed on and screw tight on step 9.
It is set between 7 and first taper face 5 of threaded portion there are one stress relief groove 10 in a ring, stress relief groove 10 is used
In the stress that elimination tensioning bolt 2 is axially subject to, the service life of tensioning bolt 2 is improved.
In the present embodiment, 4 inside of nut has hollow-out parts 11.
11 inner wall of hollow-out parts is in regular polygon, can be used for realizing with tool cooperation and twist, it is preferable that 11 inner wall of hollow-out parts is in
Regular hexagon.
The operation principle of the utility model is：
Tensioning bolt 2 realizes that the tensioned fit with pump shaft 1, tensioning bolt 2 and impeller 3 pass through the first cone by open slot 8
5 and second taper face 6 of degree face realizes tensioned fit, so as to fulfill the fixation of total.It can appoint during adjustment along the axial direction of pump shaft 1
The movement of meaning position, adjusts the position of impeller 3, is accurately positioned impeller.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Described specific embodiment can be done various modifications or additions or using similar by belonging to those skilled in the art
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although pump shaft 1, tensioning bolt 2, impeller 3, nut 4, the first taper face 5, the second taper is used more herein
Face 6, open slot 8, screws tight the terms such as step 9, stress relief groove 10, hollow-out parts 11 at threaded portion 7, but is not precluded using other
The possibility of term.The use of these terms is merely for the convenience of describing and explaining the nature of the invention；Them
It is all contrary to the spirit of the present invention to be construed to any one of the additional limitations.
Claims (10)
1. a kind of multi-level pump impeller is accurately positioned adjustment fixing structure, including tensioning bolt (2), the leaf being set on pump shaft (1)
Take turns (3) and nut (4), which is characterized in that described tensioning bolt (2) bottom outer wall has the first taper face (5), the leaf
It takes turns (3) inner wall and is equipped with the second taper face (6), the tensioning bolt (2) and spiral shell with the first taper face (5) corresponding position
Female (4) are spirally connected and the first taper face (5) and the second taper face (6) form tensioned fit.
2. multi-level pump impeller according to claim 1 is accurately positioned adjustment fixing structure, which is characterized in that the tensioning
There are threaded portion (7) at the top of bolt (2), on tensioning bolt (2) and being axially arranged with through tensioning bolt along tensioning bolt (2)
(2) open slot (8) at both ends.
3. multi-level pump impeller according to claim 2 is accurately positioned adjustment fixing structure, which is characterized in that the opening
The width of slot (8) is 2mm.
4. multi-level pump impeller according to claim 1 is accurately positioned adjustment fixing structure, which is characterized in that described first
Taper face (5) is consistent with the taper of the second taper face (6).
5. multi-level pump impeller according to claim 1 is accurately positioned adjustment fixing structure, which is characterized in that the impeller
(3) set that there are one be used for and nut (4) is matched screws tight step (9), the spiral shell on and above the second taper face (6)
Female (4) are pressed on after being spirally connected with tensioning bolt (2) and screw tight on step (9).
6. multi-level pump impeller according to claim 2 is accurately positioned adjustment fixing structure, which is characterized in that in threaded portion
(7) stress relief groove (10) there are one being set between the first taper face (5) in a ring.
7. multi-level pump impeller according to claim 1 is accurately positioned adjustment fixing structure, which is characterized in that the nut
(4) it is less than the cross-sectional area far from impeller (3) one end close to the cross-sectional area of impeller (3) one end.
8. multi-level pump impeller according to claim 1 is accurately positioned adjustment fixing structure, which is characterized in that the nut
(4) it is internal that there are hollow-out parts (11).
9. multi-level pump impeller according to claim 8 is accurately positioned adjustment fixing structure, which is characterized in that the hollow out
Portion (11) inner wall is in regular polygon.
10. multi-level pump impeller according to claim 9 is accurately positioned adjustment fixing structure, which is characterized in that described engraves
Empty portion (11) inner wall is in regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721709373.1U CN207598586U (en) | 2017-12-11 | 2017-12-11 | Multi-level pump impeller is accurately positioned adjustment fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721709373.1U CN207598586U (en) | 2017-12-11 | 2017-12-11 | Multi-level pump impeller is accurately positioned adjustment fixing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207598586U true CN207598586U (en) | 2018-07-10 |
Family
ID=62763838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721709373.1U Active CN207598586U (en) | 2017-12-11 | 2017-12-11 | Multi-level pump impeller is accurately positioned adjustment fixing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207598586U (en) |
-
2017
- 2017-12-11 CN CN201721709373.1U patent/CN207598586U/en active Active
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