CN204003593U - A kind of impeller and water pump thereof - Google Patents
A kind of impeller and water pump thereof Download PDFInfo
- Publication number
- CN204003593U CN204003593U CN201420334596.4U CN201420334596U CN204003593U CN 204003593 U CN204003593 U CN 204003593U CN 201420334596 U CN201420334596 U CN 201420334596U CN 204003593 U CN204003593 U CN 204003593U
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- CN
- China
- Prior art keywords
- impeller
- pumping chamber
- back shroud
- water pump
- water
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Abstract
The utility model discloses a kind of impeller and water pump thereof, this impeller comprise front shroud, back shroud and be arranged on front shroud and back shroud between blade; The radius of front shroud is greater than the radius of back shroud; The edge of blade is positioned at outside, back shroud edge; The liquid discharge flow path direction of impeller water outlet is axial.Water pump comprises above-mentioned impeller, and impeller is arranged on the pump body of water pump; Be axial arranged with the cooperatively interact pumping chamber cavity of pumping chamber of work of impeller in the pump housing; In pumping chamber, be provided with cut water, cut water laying angle ψ
0be arranged between 15 °-25 °; 1/6 part of pumping chamber is positioned under back shroud of impeller, and the remaining part of pumping chamber progressively exceeds under back shroud by helix.The design method of impeller, water pump and water pump thereof that the utility model provides can be axial by radially changing into by the liquid discharge flow path direction of impeller water outlet, thereby reduced the volume of water pump.
Description
Technical field
The utility model relates to pump technology field, is specifically related to a kind of impeller and water pump thereof.
Background technique
Receded disk impeller also claims radial flow impeller, and its water (flow) direction relies on centrifugal force to throw away along impeller diameter direction, rises to collect liquid and realize kinetic energy just must be arranged in impeller radially to the pumping chamber of potential energy conversion, as shown in Figure 1.The defect of the water pump maximum designing by the method is that pump housing radial dimension is excessive, in any case adjust the radial and axial size ratio of section and select section configuration, pump housing radial dimension reduces all very limited.The defect of this design method is also not obvious with impact in the design of pump in general industrial or agricultural and urban water supply and sewerage, because the leeway, space of its installation is larger, but, for engine cooling water pump, just seem too loose with the water pump of the method design, very large for motor general arrangement impact, particularly recent years, the trend that engine design is made every effort to exquisite is fairly obvious, more and more less to the requirement of water pump boundary dimension, can not meet the requirement of pump capacity, lift parameter and boundary dimension by existing design method and theory simultaneously.
Model utility content
For above-mentioned deficiency of the prior art, the impeller that the utility model provides and water pump thereof can be axial by radially changing into by the liquid discharge flow path direction of impeller water outlet, thereby reduced the volume of water pump.
The first goal of the invention of the present utility model is for providing a kind of impeller, and its technological scheme adopting is: comprise front shroud, back shroud and be arranged on front shroud and back shroud between blade; The radius of front shroud is greater than the radius of described back shroud; The edge of blade is positioned at outside, back shroud edge; The liquid discharge flow path direction of impeller water outlet is axial.
The second goal of the invention of the present utility model is for providing a kind of water pump, and its technological scheme adopting is: comprise impeller, impeller is arranged on the pump body of water pump; Impeller comprise front shroud, back shroud and be arranged on front shroud and back shroud between blade; The radius of front shroud is greater than the radius of back shroud; The edge of blade is positioned at outside, back shroud edge; The liquid discharge flow path direction of impeller water outlet is axial; Be axial arranged with the cooperatively interact pumping chamber cavity of pumping chamber of work of impeller in the pump housing; In pumping chamber, be provided with cut water, cut water laying angle ψ
0be arranged between 15 °-25 °; 1/6 part of pumping chamber is positioned under back shroud of impeller, and the remaining part of pumping chamber progressively exceeds under back shroud by helix.
The beneficial effects of the utility model are: the impeller that adopts this method design, make the liquid discharge flow path direction of impeller water outlet by radially changing into axially, pumping chamber cavity is designed to axial arranged by original radial arrangement, thereby makes the radial width of pump body at least reduce 20%; Pumping chamber adopts multiple sections to calculate design, makes runner more smooth, and pump efficiency is higher.
Brief description of the drawings
Fig. 1 is the structural representation that prior art water pump vane coordinates with part pumping chamber;
Fig. 2 is the structural representation of water pump of the present utility model;
Fig. 3 is the structural representation of impeller of the present utility model;
Fig. 4 is the structural representation that impeller of the present utility model coordinates with part pumping chamber;
Fig. 5 is an embodiment's of water pump of the present utility model sectional view;
Fig. 6 is the graph of a relation of specific speed and velocity coefficient.
Wherein, 1, intake pipe; 2, suction chamber; 3, impeller; 31, blade; 32, back shroud; 33, front shroud; 4, pumping chamber; 41, pumping chamber cavity; 5, the pump housing; 6, bearing support; 7, runner; 8, pump outlet; 9, cut water.
Embodiment
Below embodiment of the present utility model is described; so that those skilled in the art understand the utility model; but should be clear; the utility model is not limited to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present utility model determined in, these variations are apparent, all utilize the model utility of the utility model design to create all row in protection.
With reference to figure 3, Fig. 3 shows the structural representation of impeller of the present utility model; The technological scheme that the impeller 3 of the present embodiment adopts is: comprise front shroud 33, back shroud 32 and be arranged on front shroud 33 and back shroud 32 between blade 31; The radius of front shroud 33 is greater than the radius of back shroud 32; The edge of blade 31 is positioned at outside, back shroud edge; The liquid discharge flow path direction of impeller water outlet is axial.
After adopting technique scheme, liquid medium remains unchanged in the acting of front side of vane, and flow, the lift of the impeller of same diameter in the time of same rotational speed also remains unchanged.
In an embodiment of the present utility model, the radius width of establishing back shroud of impeller 32 is A, and the water outlet width of impeller 3 is a; Width A is less than or equal to water outlet width a.
With reference to figure 2, Fig. 2 shows the structural representation of water pump of the present utility model, and the technological scheme of the water pump of the present embodiment is:
Comprise impeller 3, impeller 3 is arranged on the pump housing 5 inside of water pump; Impeller 3 comprise front shroud 33, back shroud 32 and be arranged on front shroud 33 and back shroud 32 between blade 31; The radius of front shroud 33 is greater than the radius of back shroud 32; The edge of blade 31 is positioned at outside, back shroud edge; The liquid discharge flow path direction of impeller water outlet is axial; In the pump housing 5, be axial arranged with the cooperatively interact pumping chamber cavity 41 of pumping chamber 4 of work of impeller 3.With reference to figure 5, in pumping chamber, be provided with cut water 9, cut water laying angle ψ
0be arranged between 15 °-25 °; 1/6 part of pumping chamber 4 is positioned under back shroud of impeller 32, and the remaining part of (with reference to figure 5, wherein mark 1/6 section and show pumping chamber and be positioned at the part under back shroud of impeller 32) pumping chamber 4 progressively exceeds under back shroud 32 by helix.
Wherein, the structure of the intake pipe 1 of water pump, suction chamber 2, the pump housing 5, bearing support 6 and design method are identical with prior art, just having dwindled of its size equal proportion; With reference to figure 1, intake pipe 1, suction chamber 2 and pumping chamber 4 are assembled together successively by bolt, and bearing support 6 is arranged on the side of pumping chamber 4 away from pumping chamber cavity 4; Impeller 3 is arranged between the pumping chamber cavity 41 and suction chamber 2 of pumping chamber 4, and impeller 3 is fixed on the bearing through bearing support 6 and pumping chamber 4 centers.
In an embodiment of the present utility model, the protruding internal diameter of establishing front shroud of impeller 33 upper surfaces of water pump is that the base circle diameter (BCD) of D1, pumping chamber is D2, base circle diameter (BCD) D2=(1.01 ~ 1.05) D1, with reference to figure 4, in the edge of basic circle without radial flow path.
In an embodiment of the present utility model, preferably pumping chamber 4 is from the tip of cut water 9, and 1/6 part of pumping chamber 4 is positioned under back shroud of impeller 32, and the remaining part of pumping chamber 4 progressively exceeds under back shroud 32 by helix.
In an embodiment of the present utility model, the pumping chamber 4 of the pump housing 5 can be divided into n section on whole circumference, last cross-sectional area F
Ψ n=(360-ψ
0) Q/(360v), all the other cross-sectional area F
Ψ x=Ψ n/(360-ψ
0) * F
Ψ n; Radially B=(100F of each section runner 7
Ψ n× 0.618/0.85)
0.5, the axial L=B/0.618 of each section runner 7, each section runner fillet R=0.85B;
Wherein, Q is pumps design flow, and v is mean velocity in section, x≤n-1.
On whole circumference, be divided into 36 sections below taking pumping chamber 4 as example, the 36th cross-sectional area F
Ψ 36=(360-ψ
0) Q/(360v), all the other cross-sectional area F
Ψ n=Ψ n/(360-ψ
0) * F
Ψ 36; Radially B=(100F of each section runner
Ψ n× 0.618/0.85)
0.5, the axial L=B/0.618 of each section runner, each section runner fillet R=0.85B; Wherein, n≤35.
In an embodiment of the present utility model, mean velocity in section v can adopt formula v=k (2gH)
0.5calculate, wherein, k is velocity coefficient (choosing of k can be chosen with reference to the parameter in the form in figure 6), and g is gravity accleration, and H is pumps design lift.
Because the size of cut water laying angle directly affects the length of cut water, along with increase cut water 9 length of cut water laying angle reduce, cut water place fillet radius increases, and affect the Flow Field Distribution at cut water 9 places, for this reason, in an embodiment of the present utility model, cut water laying angle ψ
0be set to 20 °.
In the time of design, water pump adopts following mentality of designing to design:
(1) first carry out the design of impeller
A, the rotational speed N of determining water pump, efficiency eta, flow Q and lift H;
B, calculate the specific speed n of water pump according to the flow Q of definite water pump, lift H
s=3.65nQ
0.5/ H
0.75;
C, by specific speed n
swith similar numeration (with reference to modern pump technical manual) determine front shroud radius, back shroud radius and the impeller water outlet width of impeller, wherein, front shroud of impeller radius=back shroud of impeller radius+width A, width A is less than or equal to impeller water outlet width a, so that the liquid discharge flow path direction of impeller water outlet is from radially becoming axially;
D, make the edge of blade 31 be positioned at outside, back shroud edge.
(2) according to carrying out the design of pumping chamber 4 with the impeller 3 of design:
A, the mode axially flowing out according to impeller water outlet liquid, by pumping chamber cavity 41 to offer direction consistent with the liquid discharge flow path direction of impeller water outlet, pumping chamber cavity 41 is axial setting;
In b, pumping chamber, cut water laying angle determines
Cross runner center O and make the straight line AB parallel with pump outlet 8 center lines, cut water is got 15 °-25 ° as cut water laying angle ψ using center O as initial point clockwise direction at straight line AB
0;
C, the protruding internal diameter of establishing front shroud upper surface are that the base circle diameter (BCD) of D1, pumping chamber is D2, make base circle diameter (BCD) D2=(1.01 ~ 1.05) D1;
1/6 part of pumping chamber is positioned under back shroud of impeller, and the remaining part of pumping chamber progressively exceeds under back shroud by helix.
Determining of d, pump housing runner:
The pumping chamber of the pump housing 4 is divided on whole circumference to n section, determines cross sections area F by velocity coefficient method
Ψ, i.e. last cross-sectional area F
Ψ n=(360-ψ
0) Q/(360v), all the other cross-sectional area F
Ψ x=Ψ n/(360-ψ
0) * F
Ψ n; Radially B=(100F of each section runner
Ψ n× 0.618/0.85)
0.5, the axial L=B/0.618 of each section runner, each section runner fillet R=0.85B;
Wherein Q is pumps design flow, and v is mean velocity in section, x≤n-1.
Adopt design method of the present utility model, the radial width of pump body at least can reduce 20%, and pumping chamber design adopts multiple sections to calculate, and makes runner more smooth, and pump efficiency is higher.
Claims (7)
1. an impeller, comprise front shroud, back shroud and be arranged on front shroud and back shroud between blade; It is characterized in that: the radius of described front shroud is greater than the radius of described back shroud; The edge of described blade is positioned at outside, back shroud edge; The liquid discharge flow path direction of impeller water outlet is axial.
2. impeller according to claim 1, is characterized in that: the radius width of establishing described back shroud is A, and the water outlet width of impeller is a; Described width A is less than or equal to water outlet width a.
3. a water pump that comprises impeller described in claim 1, is characterized in that: described impeller is arranged on the pump body of water pump; Be axial arranged with the cooperatively interact pumping chamber cavity of pumping chamber of work of impeller in the described pump housing; In described pumping chamber, be provided with cut water, cut water laying angle ψ
0be arranged between 15 °-25 °; 1/6 part of pumping chamber is positioned under back shroud of impeller, and the remaining part of pumping chamber progressively exceeds under back shroud by helix.
4. water pump according to claim 3, is characterized in that: the protruding internal diameter of establishing front shroud upper surface is that the base circle diameter (BCD) of D1, described pumping chamber is D2; Described base circle diameter (BCD) D2=(1.01 ~ 1.05) D1.
5. according to the water pump described in claim 3 or 4, it is characterized in that: pumping chamber is divided on whole circumference to n section, last cross-sectional area F
Ψ n=(360-ψ
0) Q/(360v), all the other cross-sectional area F
Ψ x=Ψ n/(360-ψ
0) * F
Ψ n; Radially B=(100F of each section runner
Ψ n× 0.618/0.85)
0.5, the axial L=B/0.618 of each section runner, each section runner fillet R=0.85B;
Wherein, wherein Q is pumps design flow, and v is mean velocity in section, x≤n-1.
6. water pump according to claim 5, is characterized in that: described pumping chamber is divided on whole circumference to 36 sections, the 36th cross-sectional area F
Ψ 36=(360-ψ
0) Q/(360v), all the other cross-sectional area F
Ψ n=Ψ n/(360-ψ
0) * F
Ψ 36; Radially B=(100F of each section runner
Ψ n× 0.618/0.85)
0.5, the axial L=B/0.618 of each section runner, each section runner fillet R=0.85B; Wherein, n≤35.
7. water pump according to claim 5, is characterized in that: described cut water laying angle ψ
0be set to 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334596.4U CN204003593U (en) | 2014-06-23 | 2014-06-23 | A kind of impeller and water pump thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420334596.4U CN204003593U (en) | 2014-06-23 | 2014-06-23 | A kind of impeller and water pump thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204003593U true CN204003593U (en) | 2014-12-10 |
Family
ID=52043600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420334596.4U Expired - Fee Related CN204003593U (en) | 2014-06-23 | 2014-06-23 | A kind of impeller and water pump thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204003593U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047891A (en) * | 2014-06-23 | 2014-09-17 | 四川三台剑门泵业有限公司 | Impeller, water pump and design method of water pump |
-
2014
- 2014-06-23 CN CN201420334596.4U patent/CN204003593U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047891A (en) * | 2014-06-23 | 2014-09-17 | 四川三台剑门泵业有限公司 | Impeller, water pump and design method of water pump |
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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: 20141210 Termination date: 20210623 |