CN212297010U - Vortex pump impeller with groove structure - Google Patents
Vortex pump impeller with groove structure Download PDFInfo
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- CN212297010U CN212297010U CN202020066351.3U CN202020066351U CN212297010U CN 212297010 U CN212297010 U CN 212297010U CN 202020066351 U CN202020066351 U CN 202020066351U CN 212297010 U CN212297010 U CN 212297010U
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Abstract
The utility model provides a take groove structure's whirl pump impeller, the impeller includes impeller blade, back shroud, wheel hub and back of the body blade, impeller blade is located one side of back shroud, back of the body blade is located the opposite side of back shroud, set up flutedly on the back shroud, the recess arrange in the middle of the blade runner between the impeller blade, the recess with the blade shape is unanimous. The utility model discloses the whirl pump impeller has good hydraulic performance, and the recess is add to the back shroud has strengthened the restraint nature of impeller to the fluid, has reduced the loss.
Description
Technical Field
The utility model relates to an impeller field, in particular to take groove structure's whirl pump impeller.
Background
The swirl pump belongs to a non-clogging pump, is a multiphase flow pump which is named because of the rotational vortex motion existing in the internal flow of the swirl pump, and is mainly used for pumping complex media. The non-clogging characteristic of the vortex pump enables the vortex pump to be widely applied to the industries of sewage treatment, papermaking, chemical industry, pharmacy and the like. The impeller of the vortex pump is open or semi-open, the impeller is deviated to one side of the pump cavity or is completely retracted to the rear cavity of the pump shell, two different impeller arrangement modes form two vortex pump design concepts, and the two different arrangement modes are the results of balancing pumping performance and non-blocking performance. When the vortex pump works, a through flow is generated at the outlet of the impeller due to centrifugal force, medium exchange is generated between the middle section of the impeller and the bladeless cavity to form a circulating flow, impurities in the medium, such as solid particles, fibers and the like, mainly obtain energy by virtue of the circulating flow, and even are discharged through the outlet after directly moving in the bladeless cavity without passing through the impeller, so that the aim of conveying the impurities contained in the medium without blockage is fulfilled.
The vortex pump is a non-clogging pump suitable for conveying mixed media, but the traditional vortex pump also has certain defects, and because the existence of the circulating flow in the pump causes more hydraulic loss, the lift and the efficiency of the vortex pump are not high.
Through the retrieval, the patent of application number CN201610856829 "a vortex pump impeller of helical structure is taken to front end and design method", this utility model is provided with helical blade at the impeller anterior segment, and helical blade internal diameter and wheel hub week side are fixed, and the helical blade external diameter extends towards wheel hub far away, and this utility model aims at reducing the inner circulation flow through the helical structure of its front end, reduces energy loss to improve work efficiency. Through the retrieval, application number CN 201410481963' a patent "a there is not jam vortex pump impeller design method of taking long and short hem blade", the blade of its impeller includes different long blade and short blade of length, all have the hem that extends to the opposite direction with impeller direction of rotation on long blade and the short blade, this utility model discloses a reduce the interior hydraulic loss of pump chamber through restriction circulating flow to promote pump efficiency. It can be seen from existing patent, the improvement of vortex pump impeller has all reduced circulation flow intensity structure, has weakened the non-clogging nature of vortex pump promptly to a certain extent, and this patent is through structural improvement, does not change the flow state in the no leaf chamber, and through back shroud fluting, has the binding effect to liquid medium, reduces the loss, has the cutting function to solid fibre thing etc. not only has improved work efficiency, has still improved the non-clogging performance of vortex pump.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem, the utility model discloses a take groove structure's whirl pump impeller, the impeller includes impeller blade, back shroud, wheel hub and back of the body blade, impeller blade is located one side of back shroud, back of the body blade is located the opposite side of back shroud, the last recess of having seted up of back shroud, the groove arrangement in the middle of the blade runner between the impeller blade, the recess with the blade shape is unanimous.
Optionally, the geometric parameters of the groove and the geometric parameters of the impeller satisfy the following relationship:
b2＝(0.15～0.2)D2 (3)
dg＝(0.250～0.365)x (4)
β1＝25°～65° (5)
β2＝30°～50° (6)
in the formula:
Dg1-groove entrance diameter, m;
Dg2-the groove exit diameter, m;
D1-impeller inlet diameter, m;
D2-impeller exit diameter, m;
dg-groove depth, mm;
x-back cover thickness, mm;
q-flow, m3/s；
n is rotational speed of the vortex pump, r/min;
h-pump design head, m;
g-acceleration of gravity, m/s2；
b2-impeller exit width, m;
β1-impeller inlet placement angle;
β2-impeller exit placement angle;
βg1-a groove entrance angle;
βg2-the groove exit angle;
z is the number of blades.
Optionally, the number of the impeller blades is 8-10, and the impeller blades are uniformly arranged on the cover plate.
Optionally, the number of grooves is the same as the number of impeller blades.
Optionally, the flute inlet angle is coincident with the impeller blade inlet angle and the flute outlet angle is coincident with the impeller blade outlet angle.
Optionally, the groove on the rear cover plate is milled flat by a milling cutter to have a sharp corner structure.
Optionally, the number of the back blades is 6-8, and the back blades are used for balancing axial force.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model is improved based on the open design of the vortex pump, the impeller has better hydraulic performance and trafficability, and the groove structure in the flow channel can better restrain the fluid, so that the flow velocity distribution in the flow channel is more stable, and partial hydraulic loss can be reduced; the groove is designed to be consistent with the shape of the impeller, so that working interference in the flow channel is avoided, flow state disorder is avoided, the pumping capacity of the vortex pump can be directly enhanced, and the performance of the pump is improved; the groove structure can reduce the pressure of the inlet of the pump and increase the risk of cavitation of the pump while improving the performance, but the cavitation resistance of the swirl pump is better due to the special structure of the groove structure, so that the swirl pump is more suitable for the improvement.
The utility model provides a vortex pump impeller, except can reaching the improvement of vortex pump efficiency, can also promote the trafficability characteristic and the no overload nature of pump, this utility model groove structure on the back shroud and back shroud make up into sharp edges and corners, can cut off and smash fibrous, graininess solid when the pump is rotated at a high speed, can prevent effectively that solid phase impurity from twining the gathering, reduce the risk that the runner is blockked up; meanwhile, the groove structure is also beneficial to reducing the weight of the impeller and reducing the shaft power.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a front schematic view of a grooved impeller structure of a vortex pump;
FIG. 2 is a back view of a slotted vortex pump impeller structure;
FIG. 3 is a front view of a slotted vortex pump impeller;
FIG. 4 is a schematic view of a single flow channel of an impeller of the slotted vortex pump;
the following is a supplementary description of the drawings:
1. blade, 2 back shroud, 3 keyway, 4 recess, 5 hub, 6 back blade.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with at least one implementation of the invention is included.
Example (b):
with reference to fig. 1-4, the embodiment of the utility model discloses a take groove structure's whirl pump impeller, the impeller includes impeller blade 1, back shroud 2, wheel hub 5 and back of the body blade 6, impeller blade 1 is located one side of back shroud 2, back of the body blade 6 is located the opposite side of back shroud 2, the recess has been seted up on back shroud 2, the recess arrange in the middle of the blade runner between the impeller blade, the recess with the blade shape is unanimous. The hub 5 is located at the center of the rear cover plate 2, and the side wall of the hub is provided with a key groove 3.
In the embodiment, the shape of the groove is consistent with that of the blade and is positioned in the middle of the impeller flow passage, and the structure can enhance the restriction capacity of the impeller on fluid and improve the pumping capacity.
In some embodiments, the geometric parameters of the groove and the geometric parameters of the impeller satisfy the following relationship:
b2＝(0.15～0.2)D2 (3)
dg＝(0.250～0.365)x (4)
β1＝25°～65° (5)
β2＝30°～50° (6)
in the formula:
Dg1-groove entrance diameter, m;
Dg2-the groove exit diameter, m;
D1-impeller inlet diameter, m;
D2-impeller exit diameter, m;
dg-groove depth, mm;
x-back cover thickness, mm;
q-flow, m3/s；
n is rotational speed of the vortex pump, r/min;
h-pump design head, m;
g-acceleration of gravity, m/s2；
b2-impeller exit width, m;
β1-impeller inlet placement angle;
β2-impeller exit placement angle;
βg1-a groove entrance angle;
βg2-the groove exit angle;
z is the number of blades.
The diameter of the inlet of the impeller blade is D1The diameter of the outlet of the impeller blade is D2The width of the outlet of the impeller blade is b2Angle of blade inlet beta1The blade exit angle is beta2The number of the impellers is Z, and the thickness of the rear cover plate of the impellerxDepth of the groove is dg。
In some embodiments, the number of the impeller blades is 8-10, and the impeller blades are uniformly arranged on the cover plate.
In some embodiments, the number of grooves is the same as the number of impeller blades.
In some embodiments, the flute entrance angle is coincident with the impeller blade entrance angle and the flute exit angle is coincident with the impeller blade exit angle.
In some embodiments, the grooves on the back cover plate are milled flat with a milling cutter to have sharp corner structures, which have a cutting function.
In some embodiments, the back blades are 6-8 pieces, and the back blades are used for balancing the axial force.
Fig. 1, 3 and 4 together define the shape and size of the slotted swirl pump impeller.
Specifically, in order to strengthen the non-clogging performance of the vortex pump and reduce the difficulty of casting processing, a cylindrical blade is adopted, and 10 blades are selected for use in order to ensure the pumping capacity of the vortex pump. In order to ensure that the blade flow passages have more stable speed distribution, a micro groove is arranged in the middle of each flow passage, the shape of the groove is consistent with that of the cylindrical blade, the depth of the groove is 1.5mm, namely dg＝1.5mm。
Compared with the impeller of the swirl pump without the groove structure, the impeller is preliminarily optimized, and the performance of the impeller is superior in similar products; the efficiency was 50.2% without grooves and 52.0% with grooves. The spiral-flow pump with the groove structure has the advantages that the lift of the spiral-flow pump is basically unchanged, the flow state in the pump is basically unchanged, the original solid-phase conveying capacity cannot be influenced, the efficiency is improved by nearly 2%, the groove structure effectively improves the internal flowing condition of the impeller, the physical property of the groove structure is improved in anti-blocking performance, and the work efficiency of the spiral-flow pump is comprehensively improved.
The utility model discloses vortex pump impeller can be used to heterogeneous flow operating mode, can be used to contain the transport of long fiber (like straw, paper pulp, rope, poultry feather etc.), solid particle (like billet, cereal etc.) medium in the pump. It is more appropriate for the impeller arrangement to be located on one side of the pump chamber rather than fully set back to the rear side of the pump chamber.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (7)
1. The utility model provides a take groove structure's whirl pump impeller which characterized in that: the impeller comprises impeller blades (1), a rear cover plate (2), a hub (5) and back blades (6), wherein the impeller blades (1) are located on one side of the rear cover plate (2), the back blades (6) are located on the other side of the rear cover plate (2), grooves are formed in the rear cover plate (2), the grooves are formed in blade flow channels between the impeller blades, and the grooves are consistent in shape with the blades.
2. The notch structured vortex pump impeller of claim 1 wherein: the geometrical parameters of the groove and the geometrical parameters of the impeller meet the following relations:
b2＝(0.15～0.2)D2
dg＝(0.250～0.365)x
β1＝25°～65°
β2＝30°～50°
in the formula:
Dg1-groove entrance diameter, m;
Dg2-the groove exit diameter, m;
D1-impeller inlet diameter, m;
D2-impeller exit diameter, m;
dg-groove depth, mm;
x-back cover thickness, mm;
q-flow, m3/s；
n is rotational speed of the vortex pump, r/min;
h-pump design head, m;
g-acceleration of gravity, m/s2；
b2-impeller exit width, m;
β1-impeller inlet placement angle;
β2-impeller exit placement angle;
βg1-a groove entrance angle;
βg2-the groove exit angle;
z is the number of blades.
3. The notch structured vortex pump impeller of claim 1 wherein: the number of the impeller blades is 8-10, and the impeller blades are uniformly arranged on the cover plate.
4. The notch structured vortex pump impeller of claim 1 wherein: the number of the grooves is the same as that of the impeller blades.
5. The notch structured vortex pump impeller of claim 2 wherein: the groove entry angle is coincident with the impeller blade entry angle, and the groove exit angle is coincident with the impeller blade exit angle.
6. The notch structured vortex pump impeller of claim 1 wherein: the groove on the rear cover plate is milled flat by a milling cutter and then has a sharp corner structure.
7. The notch structured vortex pump impeller of claim 1 wherein: the back blade is 6 ~ 8, the back blade is used for balancing axial force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066351.3U CN212297010U (en) | 2020-01-14 | 2020-01-14 | Vortex pump impeller with groove structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020066351.3U CN212297010U (en) | 2020-01-14 | 2020-01-14 | Vortex pump impeller with groove structure |
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| CN212297010U true CN212297010U (en) | 2021-01-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336130A (en) * | 2020-01-14 | 2020-06-26 | 江苏大学镇江流体工程装备技术研究院 | Vortex pump impeller with groove structure |
| CN115076145A (en) * | 2022-07-04 | 2022-09-20 | 江苏大学 | Energy-saving and axial force self-balancing variable frequency vane pump impeller system |
| CN116146498A (en) * | 2023-02-23 | 2023-05-23 | 江苏京川水设备有限公司 | Anti-blocking self-cleaning sewage pump for integrated pump station |
-
2020
- 2020-01-14 CN CN202020066351.3U patent/CN212297010U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111336130A (en) * | 2020-01-14 | 2020-06-26 | 江苏大学镇江流体工程装备技术研究院 | Vortex pump impeller with groove structure |
| CN115076145A (en) * | 2022-07-04 | 2022-09-20 | 江苏大学 | Energy-saving and axial force self-balancing variable frequency vane pump impeller system |
| CN115076145B (en) * | 2022-07-04 | 2023-08-18 | 江苏大学 | Energy-saving variable-frequency vane pump impeller system with self-balancing axial force |
| CN116146498A (en) * | 2023-02-23 | 2023-05-23 | 江苏京川水设备有限公司 | Anti-blocking self-cleaning sewage pump for integrated pump station |
| CN116146498B (en) * | 2023-02-23 | 2024-04-19 | 江苏京川水设备有限公司 | Anti-blocking self-cleaning sewage pump for integrated pump station |
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