CN207795589U - A kind of multi-level pump impeller axial positioning mechanism - Google Patents
A kind of multi-level pump impeller axial positioning mechanism Download PDFInfo
- Publication number
- CN207795589U CN207795589U CN201721407768.6U CN201721407768U CN207795589U CN 207795589 U CN207795589 U CN 207795589U CN 201721407768 U CN201721407768 U CN 201721407768U CN 207795589 U CN207795589 U CN 207795589U
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- China
- Prior art keywords
- impeller
- positioning
- snap ring
- axle sleeve
- drive shaft
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Abstract
The utility model is related to pump type component technical field, especially a kind of multi-level pump impeller axial positioning mechanism.Including drive shaft, connecting key and impeller, axis is connect by connecting key with impeller, it is characterised in that the impeller both ends are equipped with axle sleeve and snap ring, axle sleeve, which is equipped with, clamps gap, it clamps gap fitting snap ring side and forms positioning unit, multi-stage impeller is connected in drive shaft, positioning unit is equipped between impeller.Whole detent mechanism is greatly reduced to be interference fitted on axis and require, and changes traditional positioning method, and promote positioning accuracy reduces handling difficulty simultaneously, is convenient for equipment detachable maintaining.Block groove is opened up in drive shaft, recess width is of same size with snap ring.Axially position intensity is promoted by block groove.
Description
Technical field
The utility model is related to pump type component technical field, especially a kind of multi-level pump impeller axial positioning mechanism.
Background technology
The impeller positioning method of current most of multistage pumps installs locking nut additional using impeller both ends or impeller axle is set with axis
Set carries out axially position.Wherein the axle sleeve of multi-level pump impeller positioning and axis location and installation when realized by being interference fitted.
Both it after impeller being heated, waits for that its impeller aperture expands, is quickly mounted on axis and designs installation site, produced using interference fit
Raw tension force positions impeller.
There are obvious shortcomings for above-mentioned positioning method in actual use：The first locking nut positioning method impeller center line with
It is inaccurate to pump center line alignment, the pump housing, pump cover, the secondary retrofit of axle sleeve may be caused.Cost is caused to increase production effect
Rate reduces.Second of axle sleeve fixed form can increase axle sleeve quantity, can occupy impeller wheel portion installation space, increase impeller inlet ruler
It is very little, the efficiency of impeller can be reduced；Axle sleeve quantity, which increases, simultaneously to have an impact the strength and stiffness of axis, reduce the service life of axis.
In addition second of axle sleeve stationary positioned mode is very inconvenient in detachable maintaining impeller, and repair can also cause impeller secondary accidentally
Damage.
Utility model content
The utility model solves prior art deficiency and provides a kind of multi-level pump impeller axial positioning mechanism.The impeller localization machine
The improvement of structure makes impeller positioning relatively reliable, and pump center line and impeller center line can be made to be aligned conveniently and influence impeller
Hydraulic characteristic(s), but also detachable maintaining is convenient.
Technical solution is used by the utility model solves its technical problem：
A kind of multi-level pump impeller axial positioning mechanism, including drive shaft, connecting key and impeller, drive shaft by connecting key with
Impeller connects, and the impeller both ends are equipped with axle sleeve and snap ring, and axle sleeve, which is equipped with, clamps gap, clamps gap fitting snap ring side group
At positioning unit, multi-stage impeller is connected in drive shaft, positioning unit is equipped between impeller.
Block groove is opened up in the drive shaft, block recess width and snap ring are of same size.
The clamping gap is L fonts.
Described axle sleeve one end is bonded with this grade of impeller, and there are axis between the clamping gap and next stage impeller of the axle sleeve other end
It is 1mm to gap A, axial gap A.
There are radial clearance B between clamping gap and the snap ring, radial clearance B is 0.5mm.
It is equipped on the outside of the impeller inlet end and reinforces positioning ring set, reinforced positioning ring set and connected by positioning screw and impeller
It connects.
The beneficial effects of the utility model are：
1, a kind of multi-level pump impeller axial positioning mechanism, including drive shaft, connecting key and impeller, axis pass through connecting key and leaf
Wheel connection, it is characterised in that the impeller both ends are equipped with axle sleeve and snap ring, and axle sleeve, which is equipped with, clamps gap, clamp gap fitting card
Ring side forms positioning unit, and multi-stage impeller is connected in drive shaft, positioning unit is equipped between impeller.Whole detent mechanism is substantially
It reduces to be interference fitted on axis and require, change traditional positioning method, promote positioning accuracy reduces handling difficulty simultaneously, is torn open convenient for equipment
Unload repair.Block groove is opened up in drive shaft, block recess width and snap ring are of same size.It is axial fixed to be promoted by block groove
Position intensity.
2, it is L fonts to clamp gap.Package snap ring ensures that positioning requirements promote rotary part outer rim smoothness simultaneously, reduces
Running resistance.
3, axle sleeve one end is bonded with this grade of impeller, and there are axial directions between the clamping gap and next stage impeller of the axle sleeve other end
Gap A, axial gap A are 1mm.It is effective to prevent axle sleeve from squeezing and deforming with next stage impeller when expanded by heating, after
And lead to unnecessary damage.Facilitate tool to be inserted into when dismounting and completes fast quick-detach.There are radial directions between clamping gap and snap ring
Gap B, radial clearance B are 0.5mm.Snap ring is facilitated to mount and dismount.
4, it is equipped on the outside of impeller inlet end and reinforces positioning ring set, reinforced positioning ring set and connect with impeller by positioning screw.
Rotary part outer rim smoothness is promoted, when rotation can also promote radial positioning.
The utility model has the beneficial effects that in the production process of multistage pump, it conveniently, flexibly can position impeller and exist
Position on main shaft, with it is traditional by the way of flat key and axle sleeve compared with, processing request greatly reduces, increases production
The quality of product.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is close-up schematic view.
Specific implementation mode
A kind of multi-level pump impeller axial positioning mechanism, including drive shaft 1, connecting key 2 and impeller 3, axis 1 pass through connecting key 2
It is connect with impeller 3, it is characterised in that 3 both ends of the impeller are equipped with axle sleeve 4 and snap ring 5, and axle sleeve 4, which is equipped with, clamps gap 6, clamps
Gap 6 is bonded 5 side of snap ring and forms positioning unit, and multi-stage impeller is connected in drive shaft 1, positioning unit is equipped between impeller.Institute
It states and opens up block groove 7 in drive shaft 1,7 width of block groove and snap ring 5 are of same size.The clamping gap 6 is L fonts.
4 one end of the axle sleeve is bonded with this grade of impeller, is stayed between the clamping gap 6 and next stage impeller of 4 other end of axle sleeve
It is 1mm to have axial gap A, axial gap A.There are radial clearance B, radial clearance B between the clamping gap 6 and snap ring 5 is
0.5mm.It is equipped on the outside of 3 input end of the impeller and reinforces positioning ring set 9, reinforced positioning ring set 9 and pass through positioning screw 8 and impeller 3
Connection.
When dismounting, leftmost side snap ring 5 is first removed into releasing axially position, removes outermost impeller, then flat by bottle opener etc.
Flat tool, which is inserted into axial gap A, which slightly to be pulled, can remove first order impeller, and impeller is removed step by step according to the method.This practicality is new
The multistage pump detent mechanism of type is located with obvious effects, and the efficiency of impeller improves 2%~4%.Fully meet design requirement.Not only property
Can be reliable, the plenty of time is saved, repair is again convenient, and economic benefit is apparent.
Claims (2)
1. a kind of multi-level pump impeller axial positioning mechanism, including drive shaft（1）, connecting key（2）And impeller（3）, drive shaft（1）It is logical
Cross connecting key（2）With impeller（3）Connection, it is characterised in that the impeller（3）Both ends are equipped with axle sleeve（4）And snap ring（5）, axle sleeve
（4）It is equipped with and clamps gap（6）, clamp gap（6）It is bonded snap ring（5）Side forms positioning unit, drive shaft（1）Upper connection is more
Grade impeller, positioning unit is equipped between impeller；
The drive shaft（1）On open up block groove（7）, block groove（7）Width and snap ring（5）It is of same size；The clamping
Gap（6）For L fonts；The axle sleeve（4）One end is bonded with this grade of impeller, axle sleeve（4）The clamping gap of the other end（6）With it is next
There are axial gap A between grade impeller, axial gap A is 1mm；The clamping gap（6）And snap ring（5）Between there are between radial direction
Gap B, radial clearance B are 0.5mm.
2. a kind of multi-level pump impeller axial positioning mechanism according to claim 1, it is characterised in that the impeller（3）Import
End outside, which is equipped with, reinforces positioning ring set（9）, reinforce positioning ring set（9）Pass through positioning screw（8）With impeller（3）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407768.6U CN207795589U (en) | 2017-10-30 | 2017-10-30 | A kind of multi-level pump impeller axial positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407768.6U CN207795589U (en) | 2017-10-30 | 2017-10-30 | A kind of multi-level pump impeller axial positioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207795589U true CN207795589U (en) | 2018-08-31 |
Family
ID=63284743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721407768.6U Active CN207795589U (en) | 2017-10-30 | 2017-10-30 | A kind of multi-level pump impeller axial positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207795589U (en) |
-
2017
- 2017-10-30 CN CN201721407768.6U patent/CN207795589U/en active Active
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