CN204003596U - A kind of impeller of centrifugal pump - Google Patents
A kind of impeller of centrifugal pump Download PDFInfo
- Publication number
- CN204003596U CN204003596U CN201420485712.2U CN201420485712U CN204003596U CN 204003596 U CN204003596 U CN 204003596U CN 201420485712 U CN201420485712 U CN 201420485712U CN 204003596 U CN204003596 U CN 204003596U
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- China
- Prior art keywords
- disk body
- impeller
- caulking groove
- cover plate
- blade
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Abstract
The utility model discloses a kind of impeller of centrifugal pump, comprise lower cover, upper cover plate and be arranged at lower cover and upper cover plate between some blades, this impeller is split-type structural, lower cover comprises circular lower disk body and is arranged on the axle hole at lower disk body center, on this lower disk body, be provided with some with the suitable lower caulking groove of blade shape, this lower caulking groove is uniform with respect to lower disk body center circumferential; Upper cover plate comprises disk body and is arranged on the convex extension part at disk body center, on this convex extension part, be provided with the fluid inlet that connects upper cover plate, on this, on disk body, be provided with some the upper embedded holes uniform with respect to upper cover body center circumferential, this upper embedded hole connects or part connects described upper disk body, and blade embeds one to one in upper embedded hole and lower caulking groove and is welded and fixed with upper cover plate and lower cover.This impeller is adopted as split-type structural, and each parts are processed separately, and the surface of impeller inside is exposed, and facilitates machining, has improved the surface accuracy of impeller inside, makes current smooth and easy, reduces noise.
Description
Technical field
The utility model relates to a kind of impeller, refers to especially a kind of impeller of centrifugal pump.
Background technique
The impeller of current centrifugal pump is all generally integral casting forming, and the impeller of this integral casting forming exists defect: 1. because impeller is cast-in-block, easily produce the defects such as trachoma in casting process, the working life of impeller is lower; 2. impeller integral casting, the impact that when casting, metal liquid is subject to gravity causes the density metal of end portion to be greater than the density metal of upper end part, like this, impeller after moulding is poor aspect dynamic balancing and static balancing, after High Rotation Speed, noise is large, for using on the strict equipment of ask for something noise, the impeller noise for example using on submarine is more low better, and noise is more low more difficultly to be found by enemy.3. because impeller is integrally casting moulding, the impeller of the large water outlet of large scale inside still can process so, and the less inner very difficult fine finishing of impeller of relative size, impeller inside is coarse, cause like this current not smooth, the water outlet efficiency of impeller is lower, and current have not freely strengthened the noise that vane rotary produces yet simultaneously.
Model utility content
Technical problem to be solved in the utility model is: the impeller that a kind of centrifugal pump is provided, this impeller is adopted as split-type structural, the rear recombinant moulding of processing separately of each parts, thereby the surface of impeller inside is exposed, facilitate machining, the surface accuracy that has improved impeller inside, makes current smooth and easy, reduces noise.
For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of impeller of centrifugal pump, comprise lower cover, upper cover plate and be arranged at lower cover and upper cover plate between some blades, this impeller is split-type structural, described lower cover comprises circular lower disk body and is arranged on the axle hole at lower disk body center, on this lower disk body, be provided with some with suitable lower caulking groove or the lower embedding hole of blade shape, this lower caulking groove or lower embedding hole are uniform with respect to lower disk body center circumferential; Described upper cover plate comprises circular upper disk body and is arranged on the convex extension part at disk body center, on this convex extension part, be provided with the fluid inlet that connects upper cover plate, on this, on disk body, be provided with some the upper embedded holes uniform with respect to upper cover body center circumferential, this upper embedded hole connects or part connects described upper disk body, and described blade embeds one to one in upper embedded hole and lower caulking groove or lower embedding hole and is welded and fixed with upper cover plate and lower cover.
As the preferred scheme of one, described blade is linear leaf, and this linear leaf comprises three-dimensional curve section and two-dimentional arcuate segment, and this linear leaf is casting or forging molding separately.
As the preferred scheme of one, described upper embedded hole comprises the long upper embedded hole corresponding with linear leaf, this long upper embedded hole is extended to the intersection of upper disk body and convex extension part by the outer web of upper disk body, the two-dimentional arcuate segment of described linear leaf is embedded in long upper embedded hole and is welded and fixed with long upper embedded hole, and the upside of three-dimensional curve section and the inner peripheral surface of fluid inlet of described linear leaf are welded and fixed.
As the preferred scheme of one, described lower caulking groove comprises caulking groove under the length corresponding with linear leaf, and the lower caulking groove of this length is extended inwardly to the intersection of lower disk body and axle hole by the close outer web place of lower disk body; Being embedded in long lower caulking groove and with long lower caulking groove of the two-dimentional arcuate segment of described linear leaf is welded and fixed, and the lower side of three curved sections and the outer circumferential face of axle hole of described linear leaf are welded and fixed.
As the preferred scheme of one, described blade also comprises several short blades of circumference uniform distribution, and this short blade is arranged between adjacent two linear leafs, and this short blade is casting or forging molding separately, between this short blade and upper cover plate and lower cover, is welded and fixed.
As the preferred scheme of one, on described lower cover, be provided with and the short lower caulking groove of short blade form fit, described short blade embeds in short lower caulking groove and is welded and fixed with short lower caulking groove.
As the preferred scheme of one, the cross section of described short lower caulking groove is T-slot.
As the preferred scheme of one, the cross section of described long upper embedded hole is also T shape embedding hole.
As the preferred scheme of one, described lower cover is forging molding.
Adopt after technique scheme, effect of the present utility model is: because upper cover plate, lower cover, the blade of this impeller are split-type structural, the all surface of upper cover plate, lower cover and blade all can be by machining moulding so, simultaneously, utilize upper embedded hole and lower caulking groove or lower embedding hole can facilitate firmly welding between blade and upper cover plate, lower cover, the internal table surface accuracy that has improved impeller, makes current smooth and easy, noise-decreasing.
Because described blade is linear leaf, this linear leaf comprises three-dimensional curve section and two-dimentional arcuate segment again, and this linear leaf is casting or forging molding separately, and upper cover plate, lower cover, blade be moulding in batches separately all, cost.
Because the cross section of described short lower caulking groove is T-slot, the cross section of described long upper embedded hole is also T shape embedding hole again, and the embedding between convenient like this blade and upper cover plate, lower cover also makes welding operation simple, and weld seam is easy to control.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the perspective view of the utility model embodiment 1,2 the lower cover that does not weld blade;
Fig. 2 is the perspective view of the utility model embodiment 1,2 the upper cover plate that does not weld blade;
Fig. 3 is the perspective view of the lower cover of the utility model embodiment 1 welding blade;
Fig. 4 is the perspective view of the lower cover of the utility model embodiment 2 welding blade;
Fig. 5 is the structural perspective of the impeller after the utility model embodiment 1,2 moulding;
In accompanying drawing: 1. lower cover; 11. times disk bodies; 12. axle holes; 13. times caulking grooves; 2. upper cover plate; Disk body on 21.; 22. upper embedded holes; 23. convex extension parts; 3. blade; 31. linear leafs; 311. two-dimentional arcuate segments; 312. three-dimensional curve sections; 32. short blades.
Embodiment
Below by specific embodiment, the utility model is described in further detail.
Embodiment 1
As shown in Fig. 1,2,3,5, a kind of impeller of centrifugal pump, comprise lower cover 1, upper cover plate 2 and be arranged at lower cover 1 and upper cover plate 2 between some blades 3, this impeller is split-type structural, described lower cover 1 comprises circular lower disk body 11 and is arranged on the axle hole 12 at lower disk body 11 centers, this axle hole 12 is for installing impeller shaft, the height of this axle hole 12 is higher than the card of lower disk body 11, on this lower disk body 11, be provided with some with the suitable lower caulking groove 13 of blade 3 shapes, this lower caulking groove 13 is uniform with respect to lower disk body 11 center circumferential; This lower disk body 11 can adopt precision casting or forging molding, make the whole dense structure of lower disk body 11 and evenly, the dynamic balancing of impeller and static balancing are guaranteed, lowered noise, and whole impeller is while being fixed on impeller shaft, lower cover 1 mainly bears moment of torsion, therefore, adopts precision casting or forging molding that extended the working life of impeller, the card of lower cover 1 exposes before assembling, therefore, can before welding, first carry out machining, ensure card smooth surface.
Described upper cover plate 2 comprises circular upper disk body 21 and is arranged on the convex extension part 23 at disk body 21 centers, on this convex extension part 23, be provided with the fluid inlet that connects upper cover plate 2, on this, on disk body 21, be provided with some the upper embedded holes 22 uniform with respect to upper cover body 21 center circumferential, this upper embedded hole 22 connects or part connects described upper disk body 21.In the present embodiment, upper cover plate 2 also can adopt precision casting or forging.The upper and lower card (assembling also can claim inside and outside card after completing) of upper disk body 21 can machining before welding, makes smooth surface.
Described blade 3 embeds one to one in upper embedded hole 22 and lower caulking groove 13 and is welded and fixed with upper cover plate 2 and lower cover 1, blade 3 in the present embodiment adds up to ten, wherein five linear leafs 31, five short blades 32, it is long and short that this place is stated is comparatively speaking, needn't go into seriously its size at this.Linear leaf 31 and short blade 32 spaces and uniform with respect to the center circumferential of lower disk body 11.And linear leaf 31 has only included two-dimentional arcuate segment 311.Like this, lower caulking groove 13 on lower disk body 11 comprises five the long lower caulking grooves 13 corresponding with 31 cooperations of five linear leafs, coordinate five corresponding short lower caulking grooves 13 with five short blades 32, described linear leaf 31 is embedded in long lower caulking groove 13, short blade 32 is embedded in short lower caulking groove 13, then utilizing welding technique that long and short blade 32 is welded with lower disk body 11, wherein, in Fig. 1, having described this lower caulking groove 13 is rectangle caulking groove, certainly can also be the caulking groove of T shape for cross section, the Embedded Division of the T shape coordinating with the caulking groove of T shape also can be set on corresponding blade 3.And after blade 3 and lower cover 1 have welded, on lower cover 1 by upper cover plate 2 buckle closures after welding, the center superposition of upper cover plate 2 and lower cover 1, the upper end of each blade 3 is embedded in the upper embedded hole 22 of upper cover plate 2, wherein, this upper embedded hole 22 can be completely penetrating, in upper embedded hole 22 length ranges, is all to run through disk body 21; Upper embedded hole 22 also partly connects penetrating, in upper embedded hole 22 length ranges, is having non-through position.The length of this upper embedded hole 22 also with each blade 3 Corresponding matchings.Equally, the interface of upper embedded hole 22 can be T shape or rectangle.When blade 3 is embedded into upper embedded hole 22 when interior, blade 3 can be seen from upper cover plate 2 upper surfaces in connecting position, so just can weld from the perforation position of upper cover plate 2, due to disk body 11 under being of main load after impeller installation, therefore, even if connecting, part also can meet requirement of strength.
Embodiment 2
Structure in the present embodiment and embodiment 1 is basic identical, just, described blade 3 comprises linear leaf 31 and short blade 32, and this linear leaf 31 comprises three-dimensional curve section 312 and two-dimentional arcuate segment 311, this linear leaf 31 casting or forging molding separately, and short blade 32 only includes two-dimentional arcuate segment 311.
Accordingly, described upper embedded hole 22 comprises the long upper embedded hole 22 corresponding with linear leaf 31, the short upper embedded hole 22 corresponding with short blade 32, this long upper embedded hole 22 is extended to the intersection of upper disk body 21 and convex extension part 23 by the outer web of upper disk body 21, the two-dimentional arcuate segment 311 of described linear leaf 31 is embedded in long upper embedded hole 22 and is welded and fixed with long upper embedded hole 22, and the upside of three-dimensional curve section 312 and the inner peripheral surface of fluid inlet of described linear leaf 31 are welded and fixed.Short blade 32 is identical with embodiment 1 with the welding of short upper embedded hole 22, is not repeated herein.
Described lower caulking groove 13 comprises caulking groove 13 under the length corresponding with linear leaf 31, the short lower caulking groove 13 corresponding with short blade 32, and the lower caulking groove 13 of this length is extended to the intersection of lower disk body 11 and axle hole 12 by the outer web of lower disk body 11; The upside of the two-dimentional arcuate segment 311 of described linear leaf 31 is embedded in long lower caulking groove 13 and with long lower caulking groove 13 and is welded and fixed, and the lower side of three curved sections of described linear leaf 31 and the outer circumferential face of axle hole 12 are welded and fixed.Short blade 32 is identical with embodiment 1 with the welding of short lower caulking groove 13, is not repeated herein.
In the welding process of linear leaf 31 that includes three-dimensional curve section 312, first, the two-dimentional arcuate segment 311 of linear leaf 31 is embedded in long lower caulking groove 13, and the lower side of three-dimensional curve section 312 can coordinate with the outer circumferential face of axle hole 12, like this linear leaf 31 and lower cover 1 is welded.And while buckling upper cover plate 2, the upside of the three-dimensional curve section 312 of linear leaf 31 is to fit with the inner peripheral surface of fluid inlet, and still can weld from the long upper embedded hole 22 connecting between the two-dimentional arcuate segment 311 of linear leaf 31 and upper cover plate 2, three-dimensional curve section 312 is directly welded from fluid inlet.
Because this impeller adopts split-type structural, blade 3, upper cover plate 2, lower cover 1 all can forge separately or precision casting moulding so.Make each density metal of impeller even, dynamic balancing and static balancing are good, and split-type structural, the directly fine finishing of the card of upper cover plate 2, lower cover 1, smooth surface, has reduced flow resistance, the power of impeller is improved, when having reduced the noise of mobile generation and having rotated, produce noise, make it meet special occasions and use, for example, on submarine.
Claims (9)
1. the impeller of a centrifugal pump, comprise lower cover, upper cover plate and be arranged at lower cover and upper cover plate between some blades, it is characterized in that: this impeller is split-type structural, described lower cover comprises circular lower disk body and is arranged on the axle hole at lower disk body center, on this lower disk body, be provided with some with suitable lower caulking groove or the lower embedding hole of blade shape, this lower caulking groove or lower embedding hole are uniform with respect to lower disk body center circumferential; Described upper cover plate comprises circular upper disk body and is arranged on the convex extension part at disk body center, on this convex extension part, be provided with the fluid inlet that connects upper cover plate, on this, on disk body, be provided with some the upper embedded holes uniform with respect to upper cover body center circumferential, this upper embedded hole connects or part connects described upper disk body, and described blade embeds one to one in upper embedded hole and lower caulking groove or lower embedding hole and is welded and fixed with upper cover plate and lower cover.
2. the impeller of a kind of centrifugal pump as claimed in claim 1, is characterized in that: described blade is that this linear leaf of linear leaf comprises three-dimensional curve section and two-dimentional arcuate segment, and this linear leaf is casting or forging molding separately.
3. the impeller of a kind of centrifugal pump as claimed in claim 2, it is characterized in that: described upper embedded hole comprises the long upper embedded hole corresponding with linear leaf, this long upper embedded hole is extended to the intersection of upper disk body and convex extension part by the outer web of upper disk body, the two-dimentional arcuate segment of described linear leaf is embedded in long upper embedded hole and is welded and fixed with long upper embedded hole, and the upside of three-dimensional curve section and the inner peripheral surface of fluid inlet of described linear leaf are welded and fixed.
4. the impeller of a kind of centrifugal pump as claimed in claim 3, is characterized in that: described lower caulking groove comprises caulking groove under the length corresponding with linear leaf, and the lower caulking groove of this length is extended inwardly to the intersection of lower disk body and axle hole by the close outer web place of lower disk body; The two-dimentional arcuate segment of described linear leaf is embedded in long lower caulking groove and with long lower caulking groove and is welded and fixed, and the lower side of three curved sections and the outer circumferential face of axle hole of described linear leaf are welded and fixed.
5. the impeller of a kind of centrifugal pump as described in claim 2 to 4 any one, it is characterized in that: described blade also comprises several short blades of circumference uniform distribution, this short blade is arranged between adjacent two linear leafs, this short blade is casting or forging molding separately, between this short blade and upper cover plate and lower cover, is welded and fixed.
6. the impeller of a kind of centrifugal pump as claimed in claim 5, is characterized in that: on described lower cover, be provided with and the short lower caulking groove of short blade form fit, described short blade embeds in short lower caulking groove and is welded and fixed with short lower caulking groove.
7. the impeller of a kind of centrifugal pump as claimed in claim 6, is characterized in that: described short lower caulking groove is that cross section is the groove of T shape.
8. the impeller of a kind of centrifugal pump as claimed in claim 3, is characterized in that: the cross section of described long upper embedded hole is also T shape.
9. the impeller of a kind of centrifugal pump as claimed in claim 1, is characterized in that: described lower cover is for forging or precision casting moulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485712.2U CN204003596U (en) | 2014-08-27 | 2014-08-27 | A kind of impeller of centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420485712.2U CN204003596U (en) | 2014-08-27 | 2014-08-27 | A kind of impeller of centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003596U true CN204003596U (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420485712.2U Expired - Fee Related CN204003596U (en) | 2014-08-27 | 2014-08-27 | A kind of impeller of centrifugal pump |
Country Status (1)
| Country | Link |
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| CN (1) | CN204003596U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173444A (en) * | 2019-04-30 | 2019-08-27 | 中国科学院工程热物理研究所 | Split type supercritical carbon dioxide double shrouded wheel and manufacturing method |
-
2014
- 2014-08-27 CN CN201420485712.2U patent/CN204003596U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110173444A (en) * | 2019-04-30 | 2019-08-27 | 中国科学院工程热物理研究所 | Split type supercritical carbon dioxide double shrouded wheel and manufacturing method |
| CN110173444B (en) * | 2019-04-30 | 2021-03-26 | 中国科学院工程热物理研究所 | Split supercritical carbon dioxide closed impeller and manufacturing method thereof |
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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 |
Granted publication date: 20141210 Termination date: 20200827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |