CN209294119U - The screw thread key drive mechanism of impeller of pump and pump shaft - Google Patents
The screw thread key drive mechanism of impeller of pump and pump shaft Download PDFInfo
- Publication number
- CN209294119U CN209294119U CN201822101261.9U CN201822101261U CN209294119U CN 209294119 U CN209294119 U CN 209294119U CN 201822101261 U CN201822101261 U CN 201822101261U CN 209294119 U CN209294119 U CN 209294119U
- Authority
- CN
- China
- Prior art keywords
- slot
- pump shaft
- impeller
- spindle nose
- pump
- 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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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model proposes the screw thread key drive mechanism of a kind of impeller of pump and pump shaft, impeller has wheel hub and blade, and the side of wheel hub screws togather slot with indent, screws togather and be provided with interior rectangular thread on the inner wall of slot；One end of pump shaft has spindle nose, and spindle nose is provided with and the matched outer rectangular thread of interior rectangular thread；Spindle nose, which is screwed on, to be screwed togather in slot, and it is identical that spindle nose is screwed into the rotation direction screwed togather when the rotation direction in slot works with pump shaft.The utility model is compared to the connection structure of flat key, and the setting of interior rectangular thread and outer rectangular thread is so that contact surface is bigger；Moreover, thread connecting mode makes in rotation process, stress is generally evenly distributed in whole circumference, and power is dispersed, more balanced compared to flat key structure transmission process, and there is no eccentric torques；Moreover, to be screwed into the rotation direction screwed togather when the rotation direction in slot and pump shaft work identical for spindle nose, then in the pump shaft course of work, the case where impeller is not in loosening, transmission failure is avoided.
Description
Technical field
The utility model relates to the technical field of pump body structure, the screw thread key of specifically a kind of impeller of pump and pump shaft is driven
Structure.
Background technique
In the structure of common pump, connection and transmission between pump shaft and impeller are realized by flat key connection；
And flat key is in transmission process, side is squeezed easily deforms for a long time, and impeller is caused to loosen, and transmission failure influences pump
Using and the service life, cause economic loss.
Utility model content
The utility model proposes the screw thread key drive mechanisms of a kind of impeller of pump and pump shaft, solve pump shaft in the prior art
The problem of impeller easily loosens caused by being realized connection using flat key with impeller and be driven.
The technical solution of the utility model is achieved in that
A kind of screw thread key drive mechanism of impeller of pump and pump shaft, including impeller and pump shaft,
The impeller has wheel hub and blade, and the side of the wheel hub has the slot that screws togather of indent, described to screw togather the interior of slot
Interior rectangular thread is provided on wall；
One end of the pump shaft has spindle nose, and the spindle nose is provided with and the interior matched outer rectangle spiral shell of rectangular thread
Line；
The spindle nose be screwed on it is described screw togather in slot, the spindle nose be screwed into the rotation direction screwed togather in slot with it is described
Rotation direction when pump shaft works is identical.
Further, it is provided with the limiting slot extended outward radially at the notch for screwing togather slot, then described
Limiting slot and the joint for screwing togather slot form first step；
The spindle nose and the pump shaft joint are formed and the matched second step of the first step, the second step
It is resisted against on the first step, the side of the end of the pump shaft is bonded with the inner wall of the limiting slot.
Further, the medial end for screwing togather slot is provided with dashpot.
The utility model has the following beneficial effects:
The design of the utility model structure is simple, easily fabricated, easy to use, low in cost.Compared to the connection knot of flat key
Structure, the setting of interior rectangular thread and outer rectangular thread is so that contact surface is bigger；Moreover, thread connecting mode to rotate
Cheng Zhong, stress are generally evenly distributed in whole circumference, and power is dispersed, more equal compared to flat key structure transmission process
Weighing apparatus, there is no eccentric torques；Moreover, spindle nose is screwed into the rotation direction phase screwed togather when the rotation direction in slot works with pump shaft
Together, then in the pump shaft course of work, the case where impeller is not in loosening, transmission failure is avoided.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the configuration schematic diagram of the utility model one embodiment.
Wherein:
1, pump shaft；2, wheel hub；3, blade；4, slot is screwed togather；5, interior rectangular thread；6, spindle nose；7, outer rectangular thread；8, it limits
Slot；9, first step；10, second step；11, dashpot.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the screw thread key drive mechanism of impeller of pump and pump shaft in the present embodiment, including impeller and pump shaft 1,
The impeller has wheel hub 2 and a blade 3, and what the side of the wheel hub 2 had an indent screws togather slot 4, on the inner wall for screwing togather slot 4
It is provided with interior rectangular thread 5.
One end of the pump shaft 1 has spindle nose 6, and the spindle nose 6 is provided with and the interior matched outer rectangle of rectangular thread 5
Screw thread 7；The spindle nose 6 screws togather in slot 4 described in being screwed on, and the spindle nose 6 is screwed into rotation direction and the institute screwed togather in slot 4
The rotation direction stated when pump shaft 1 works is identical.
In the present embodiment, it is provided with the limiting slot 8 extended outward radially at the notch for screwing togather slot 4, then exists
The limiting slot 8 forms first step 9 with the joint for screwing togather slot 4；The spindle nose 6 is formed with 1 joint of pump shaft
With the matched second step 10 of the first step 9, the second step 10 is resisted against on the first step 9, the pump shaft 1
The side of end be bonded with the inner wall of the limiting slot 8, then limiting slot 8 plays two-way limit axially and radially to pump shaft 1
Position.
In the present embodiment, the medial end for screwing togather slot 4 is provided with dashpot 11, is screwed into for spindle nose 6 and reserves buffering
Gap.
The present embodiment is compared to the connection structure of flat key, and the setting of interior rectangular thread 5 and outer rectangular thread 7 is so that connect
Contacting surface is bigger；Moreover, thread connecting mode makes in rotation process, stress is generally evenly distributed in whole circumference, by power into
Dispersion is gone, more balanced compared to flat key structure transmission process, there is no eccentric torques；Moreover, spindle nose 6 is screwed into and screws togather
Rotation direction when rotation direction in slot 4 works with pump shaft 1 is identical, referring in Fig. 1, when spindle nose 6, which is screwed into, screws togather slot 4,
For impeller, the rotation direction of pump shaft 1 be it is counterclockwise, then when pump shaft 1 work when, the rotation direction of pump shaft 1 also exists
In the counter clockwise direction, in this way, in 1 course of work of pump shaft, the case where impeller is not in loosening, transmission failure is avoided.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (3)
1. the screw thread key drive mechanism of a kind of impeller of pump and pump shaft, including impeller and pump shaft, which is characterized in that
The impeller has wheel hub and a blade, and the side of the wheel hub has a slot that screws togather of indent, on the inner wall for screwing togather slot
It is provided with interior rectangular thread；
One end of the pump shaft has spindle nose, and the spindle nose is provided with and the interior matched outer rectangular thread of rectangular thread；
The spindle nose screws togather in slot described in being screwed on, and the spindle nose is screwed into the rotation direction screwed togather in slot and the pump shaft
Rotation direction when work is identical.
2. a kind of screw thread key drive mechanism of impeller of pump and pump shaft as described in claim 1, which is characterized in that described to screw togather
The limiting slot extended outward radially is provided at the notch of slot, then in the limiting slot and the joint for screwing togather slot
Form first step；
The spindle nose and the pump shaft joint formed with the matched second step of the first step, the second step against
On the first step, the side of the end of the pump shaft is bonded with the inner wall of the limiting slot.
3. a kind of screw thread key drive mechanism of impeller of pump and pump shaft as claimed in claim 2, which is characterized in that described to screw togather
The medial end of slot is provided with dashpot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822101261.9U CN209294119U (en) | 2018-12-13 | 2018-12-13 | The screw thread key drive mechanism of impeller of pump and pump shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822101261.9U CN209294119U (en) | 2018-12-13 | 2018-12-13 | The screw thread key drive mechanism of impeller of pump and pump shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209294119U true CN209294119U (en) | 2019-08-23 |
Family
ID=67654769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822101261.9U Expired - Fee Related CN209294119U (en) | 2018-12-13 | 2018-12-13 | The screw thread key drive mechanism of impeller of pump and pump shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209294119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927824A (en) * | 2020-09-18 | 2020-11-13 | 宁波丰沃涡轮增压系统有限公司 | Turbine rotor assembly and turbofan |
-
2018
- 2018-12-13 CN CN201822101261.9U patent/CN209294119U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927824A (en) * | 2020-09-18 | 2020-11-13 | 宁波丰沃涡轮增压系统有限公司 | Turbine rotor assembly and turbofan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190823 Termination date: 20211213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |