CN204082646U - A kind of water pump vane - Google Patents
A kind of water pump vane Download PDFInfo
- Publication number
- CN204082646U CN204082646U CN201420529252.9U CN201420529252U CN204082646U CN 204082646 U CN204082646 U CN 204082646U CN 201420529252 U CN201420529252 U CN 201420529252U CN 204082646 U CN204082646 U CN 204082646U
- Authority
- CN
- China
- Prior art keywords
- keyway
- axis hole
- water pump
- impeller
- pump vane
- 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 discloses a kind of water pump vane, its drip irrigation device is, comprise wheel disc, wheel disk center is provided with mandrel seat, be provided with axis hole in the middle of mandrel seat, axis hole offers keyway, and keyway comprises bottom surface and bi-side, keyway bottom surface is smooth arc surface, and bottom surface and corner, bi-side are arc transition.By adopting technique scheme; improve the mode that traditional rotating shaft is connected with impeller flat key; keyway right angle adopts arc transition; keyway bottom surface is smooth arc surface; avoid damaging keyway itself and mould in press casting procedure; reduce the impeller tangential stress that keyway right angle side place is subject in running, protection keyway arrangements is not destroyed, and ensures motor safety stable operation.
Description
Technical field
The utility model relates to a kind of water pump vane.
Background technique
Impeller of pump be in water pump by changes mechanical energy be water can critical piece, common impeller central is all provided with mandrel seat, offers axis hole in mandrel seat, is provided with keyway in axis hole, the rotating shaft Spielpassung of this keyway and drive motor, machine shaft rotates thus impeller rotates.The complex structure of impeller, particularly blade are solid space structure, and machining difficulty is large, therefore market much all adopts the mode of casting to process impeller.
At present, domestic production impeller generally all adopts the Placement of flat key to coordinate with machine shaft, but such structure is in the middle of actual casting process and impeller running, the following problem of easy generation: 1, traditional flat key groove bottom is right angle side, in casting process, right angle side stress ratio is more concentrated, and stress excessive its plastic limit that exceedes in edges and corners easily causes flat key cell wall to occur crackle, also can damage die casting mould simultaneously, affect its working life; 2, impeller is in the middle of running, transmit moment of rotation to machine shaft, impeller is in operation and bears huge tangent line and radial stress, and tangential stress is maximum at the right angle side place of axial keyway, and then causes keyway to occur trickle slight crack, large in steam moisture, when the lower hydrogen embrittlement stress corrosion of temperature extremely enlivens, easily bring out from the slight crack place at keyway place, crackle is constantly expanded, cause keyway to break, the safe operation of motor is threatened.
Model utility content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of water pump vane, reduces the impeller tangential stress that keyway right angle side place is subject in running, and protection keyway arrangements is not destroyed, and ensures motor safety stable operation.
For achieving the above object, the utility model provides following technological scheme: a kind of water pump vane, comprise wheel disc, described disk center of taking turns is provided with mandrel seat, and be provided with axis hole in the middle of described mandrel seat, described axis hole offers keyway, described keyway comprises bottom surface and bi-side, described keyway bottom surface is that arc surface is arranged, and arc surface is described axis hole center curving dorsad, and described bottom surface and joint, bi-side are arc transition arranges.
By adopting technique scheme, improve the mode that traditional rotating shaft is connected with impeller flat key, keyway right angle adopts arc transition, described keyway bottom surface is smooth arc surface, thus the stress equilibrium in the middle of casting process can be dispersed on arc surface, avoid occurring that stress is concentrated, stress biggest place exceedes the plastic limit of keyway own and occurs slight crack, also die casting mould can be avoided to be subject to excessive reaction force and to cause damage, extend die life.In like manner; in the middle of impeller running; transmit moment of rotation to machine shaft; keyway corner is in operation and bears tangential stress; but arrange because keyway bottom surface and corner are circular arc; therefore the stress equilibrium be subject to can be scattered in arc-shaped surface, there is not slight crack by tangential stress effect in protection keyway, ensures motor safety stable operation.
The utility model is set to further: described key way surface is provided with Aluminum Coating.
By adopting technique scheme, when electrogalvanizing aluminium paint, this hydrogen aluminium paint plays barrier action, avoid infiltrating hydrogen trap in impeller out, prevent Hydrogen Brittleness Phenomena, avoid when trickle slight crack appears in keyway, because Hydrogen Brittleness Phenomena keyway brings out from slight crack place, continuous expansion, causes keyway to break.
The utility model is set to further: the thickness of described Aluminum Coating is 2.5um.
By adopting technique scheme, when the thickness of described Aluminum Coating is more than 2.5um, the hydrogen infiltrated in impeller is difficult to spread out, and can prevent hydrogen embrittlement from occurring, thus avoid Hydrogen Brittleness Phenomena to threaten to keyway arrangements.
The utility model is set to further: described axis hole is provided with some keyways, and described keyway is along the circumferential direction uniformly distributed.
By adopt technique scheme, axis hole is provided with more keyway, thus stressed evenly, stress concentrate less, for transmitting the better effects if of cooperation, and due to impeller be that die casting forms, disposal molding, easy to process.
Accompanying drawing explanation
Fig. 1 is the plan view of a kind of water pump vane embodiment of the utility model;
Fig. 2 is the partial enlarged drawing of described keyway I.
In figure: 1, wheel disc; 2, mandrel seat; 3, axis hole; 4, keyway.
Embodiment
Referring to figs. 1 through Fig. 2, a kind of water pump vane embodiment of the utility model is described further.
A kind of water pump vane, comprise wheel disc 1, described wheel disc 1 center is provided with mandrel seat 2, axis hole 3 is provided with in the middle of described mandrel seat 2, described axis hole 3 offers keyway 4, and described keyway 4 comprises bottom surface and bi-side, and described keyway 4 bottom surface is that arc surface is arranged, arc surface is described axis hole 3 center curving dorsad, and described bottom surface and joint, bi-side are arc transition arranges.
By adopting technique scheme, improve the mode that traditional rotating shaft is connected with impeller flat key, keyway 4 right angle adopts arc transition, described keyway 4 bottom surface is smooth arc surface, thus the stress equilibrium in the middle of casting process can be dispersed on arc surface, avoid occurring that stress is concentrated, stress biggest place exceedes the plastic limit of keyway 4 own and occurs slight crack, also die casting mould can be avoided to be subject to excessive reaction force and to cause damage, extend die life.In like manner; in the middle of impeller running; transmit moment of rotation to machine shaft; keyway 4 corner is in operation and bears huge tangential stress; but arrange because keyway 4 bottom surface and corner are circular arc; therefore the stress equilibrium be subject to can be scattered in arc-shaped surface, there is not slight crack by tangential stress effect in protection keyway 4, ensures motor safety stable operation.
Described keyway 4 surface is provided with Aluminum Coating.
By adopting technique scheme, when electrogalvanizing aluminium paint, this hydrogen aluminium paint plays barrier action, avoid infiltrating hydrogen trap in impeller out, prevent Hydrogen Brittleness Phenomena, avoid when trickle slight crack appears in keyway 4, because Hydrogen Brittleness Phenomena keyway 4 brings out from slight crack place, continuous expansion, causes keyway 4 to break.
As another kind of mode of execution, described coating also can use the low hydrogen such as silver, tungsten diffusivity and low hydrogen deliquescent metal coating.
The thickness of described Aluminum Coating is 2.5um.
By adopting technique scheme, when the thickness of described Aluminum Coating is more than 2.5um, the hydrogen infiltrated in impeller is difficult to spread out, and can prevent hydrogen embrittlement from occurring, thus avoid Hydrogen Brittleness Phenomena to threaten to keyway 4 structure.
As another kind of mode of execution, described Aluminum Coating can increase coating thickness according to actual conditions.
Described axis hole 3 is provided with some keyways 4, and described keyway 4 is along the circumferential direction uniformly distributed.
By adopt technique scheme, axis hole 3 is provided with more keyway 4, thus stressed evenly, stress concentrate less, for transmitting the better effects if of cooperation, and due to impeller be that die casting forms, disposal molding, easy to process.
Claims (4)
1. a water pump vane, comprise wheel disc, described disk center of taking turns is provided with mandrel seat, axis hole is provided with in the middle of described mandrel seat, described axis hole offers keyway, and described keyway comprises bottom surface and bi-side, it is characterized in that: described keyway bottom surface is that arc surface is arranged, arc surface is described axis hole center curving dorsad, and described bottom surface and joint, bi-side are arc transition arranges.
2. a kind of water pump vane according to claim 1, is characterized in that: described key way surface is provided with Aluminum Coating.
3. a kind of water pump vane according to claim 2, is characterized in that: the thickness of described Aluminum Coating is 2.5um.
4. a kind of water pump vane according to claim 1 or 2 or 3, it is characterized in that: described axis hole is provided with some keyways, described keyway is along the circumferential direction uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529252.9U CN204082646U (en) | 2014-09-15 | 2014-09-15 | A kind of water pump vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420529252.9U CN204082646U (en) | 2014-09-15 | 2014-09-15 | A kind of water pump vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082646U true CN204082646U (en) | 2015-01-07 |
Family
ID=52175369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420529252.9U Expired - Fee Related CN204082646U (en) | 2014-09-15 | 2014-09-15 | A kind of water pump vane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082646U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640747A (en) * | 2016-12-14 | 2017-05-10 | 重庆道同动力机械设备有限公司 | Water pump impeller |
-
2014
- 2014-09-15 CN CN201420529252.9U patent/CN204082646U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640747A (en) * | 2016-12-14 | 2017-05-10 | 重庆道同动力机械设备有限公司 | Water pump impeller |
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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: 20170915 |