CN204985053U - Centrifugal pump open impeller - Google Patents
Centrifugal pump open impeller Download PDFInfo
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- CN204985053U CN204985053U CN201520401447.XU CN201520401447U CN204985053U CN 204985053 U CN204985053 U CN 204985053U CN 201520401447 U CN201520401447 U CN 201520401447U CN 204985053 U CN204985053 U CN 204985053U
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- impeller
- blade
- centrifugal pump
- back shroud
- circumference
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Abstract
The utility model relates to a novel the impeller especially relates to the open blade of centrifugal pump. A disclosed centrifugal pump open impeller includes the blade of circumference equipartition on the back shroud and the shaft hole of center, the blade is eight prismatic blades, the back shroud between two prismatic blades, have eight parabola type breachs to be recess circumference equipartition, the parabola summit is located the impeller outer diameter about, and the edge is 15 contained angles with the left and right sides blade side that corresponds respectively, the impeller still is equipped with eight balancing holes of circumference equipartition in the inboard on recess summit. The average balancing hole of circumference is used for balanceing partial axial force for the impeller is unlikely to excessive mechanical wear, increases the life of impeller. Have cover plate groove's back shroud, only remain the sub -fraction back shroud. Can eliminate because the asymmetric axial force that arouses in impeller front and back makes the impeller operation more stable betterly.
Description
Technical field
The utility model relates to a kind of novel impeller, particularly relates to a kind of Novel direct blade impeller.
Background technique
Centrifugal pump is a kind of general hydraulic machinery, and impeller is the acting part of centrifugal pump, and relying on its High Rotation Speed liquid acting to be realized to the conveying of liquid, is one of strength member of centrifugal pump.Along with the development of Chinese national economy, centrifugal pump has been widely used in river, river, the excavation in lake, clear what, the hydraulic engineerings such as dredging.But in centrifugal pump using process, owing to containing a large amount of silt in the current of rivers and lakes, there are serious wearing and tearing in impeller in actual applications, and axial force is comparatively large, has a strong impact on normal operation and the safety in production of equipment.
Summary of the invention
In order to solve the larger problem of axial force in background technique, the utility model is studied blade wheel structure, propose a kind of large discharge centrifugal pump unshrouded impeller, the solid-liquid two-phase flow containing larger solid particle can be carried, reduce damage in impeller, reduce axial force, thus ensure the normal operation of impeller, and improve the working life of impeller.Its technological scheme is:
A kind of centrifugal pump unshrouded impeller, be included in the axis hole of the uniform blade of circumference and central position on back shroud, described blade is eight prismatic blades; Described back shroud, between two prismatic blades, has eight parabolic shape breach to be that groove circumference is uniform, and parabola summit is at the place of impeller outer diameter, and left and right edges is 15 ° of angles with corresponding left and right blade side respectively; Described impeller is also provided with eight uniform equalizing orifices of circumference in the inner side of groove apex.The average equalizing orifice of circumference is used for balance portion axial force, makes impeller be unlikely to excessive mechanical attrition, increases the working life of impeller.With the back shroud of lid panel notches, only retain sub-fraction back shroud.Can eliminate preferably due to caused axial force asymmetric before and after impeller, impeller be run more stable.
As preferably: a kind of centrifugal pump unshrouded impeller, described prismatic blade, import and export laying angle and be 90 °, blade inlet edge is outward-dipping, is 30 ° with axis.Blade inlet edge tilts, can ensure that the front and back streamline substantial distance flowing through blade is equal preferably, the effect accepting energy is similar to identical, be unlikely to because the existence of energy gradient causes unnecessary backflow, Secondary Vortex Flow, cause larger hydraulic loss, hydraulic efficiency is declined to a great extent, simultaneously, blade processing is simple, and expense is lower.
As preferably: a kind of centrifugal pump unshrouded impeller, the pitch circle diameter of described equalizing orifice is 1/3 place of impeller outer diameter.Rational equalizing orifice position is the result that efficiency of centrifugal pump and axial pressure consider.
As preferably: a kind of centrifugal pump unshrouded impeller, described equalizing orifice is pre-small post-large horn-like, and average diameter is 1/4 of described shaft hole diameter.Horn-like equalizing orifice is convenient to off-load, and aperture is also important parameter.
As preferably: a kind of centrifugal pump unshrouded impeller, described equalizing orifice is elongated circular hole, and diameter is 1/4 of described shaft hole diameter.The equalizing orifice of elongated circular hole is convenient to processing.
In a word: the utility model processing technology is simple, considers efficiency and axial force size, be applicable to carry the solid-liquid two-phase flow containing larger solid particle, reduce damage in impeller, reduce axial force, thus ensure the normal operation of impeller, and improve the working life of impeller.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the sectional view of Fig. 1.
In figure: 1, prismatic blade, 101, blade inlet edge, 2, back shroud, 3, equalizing orifice, 4, axis hole, 5, groove, 501, parabola summit.
Embodiment
Below in conjunction with Fig. 1 and Fig. 2, scheme of the present utility model is described further:
Embodiment 1: a kind of centrifugal pump unshrouded impeller, external diameter 240mm, be included in the axis hole 4 of the uniform blade of circumference and central position on back shroud 2, aperture is 60mm, described blade is eight prismatic blades 1, described prismatic blade 1, imports and exports laying angle and is 90 °, blade inlet edge 101 is outward-dipping, is 30 ° with axis.Described back shroud 2 is between every two prismatic blades 1, and have eight parabolic shape breach to be that groove 5 circumference is uniform, parabola summit 501 is at 2/3 place of impeller outer diameter, and left and right edges is 15 ° of angles with corresponding left and right blade side respectively; Described impeller is also also provided with uniform eight equalizing orifices 3 of circumference at 1/3 place of the impeller outer diameter of the inner side on groove parabola summit 501, equalizing orifice 3 is in pre-small post-large horn-like, and average diameter is 1/4 of described axis hole 4 diameter, and bellmouth orifice unloading effect is obvious.Blade inlet edge 101 tilts, can ensure that the front and back streamline substantial distance flowing through blade is equal preferably, the effect accepting energy is similar to identical, be unlikely to because the existence of energy gradient causes unnecessary backflow, Secondary Vortex Flow, cause larger hydraulic loss, hydraulic efficiency is declined to a great extent, simultaneously, blade processing is simple, and expense is lower.The average equalizing orifice 3 of circumference is used for balance portion axial force, makes impeller be unlikely to excessive mechanical attrition, increases the working life of impeller.Back shroud 2 with fluted 5, reduces stress surface, can eliminate preferably due to caused axial force asymmetric before and after impeller, impeller be run more stable.
Embodiment 2: a kind of centrifugal pump unshrouded impeller, external diameter is 180mm, be included in the axis hole 4 of the uniform blade of circumference and central position on back shroud 2, aperture is 45mm, described blade is eight prismatic blades 1, described prismatic blade 1, imports and exports laying angle and is 90 °, blade inlet edge 101 is outward-dipping, is 30 ° with axis.Described back shroud 2 is between every two prismatic blades 1, and have eight parabolic shape breach to be that groove 5 circumference is uniform, parabola summit 501 is at 2/3 place of impeller outer diameter, and left and right edges is 15 ° of angles with corresponding left and right blade side respectively; Described impeller is also also provided with eight uniform equalizing orifices 3 of circumference at 1/3 place of the impeller outer diameter of the inner side of groove apex, equalizing orifice 3 is elongated circular hole, and diameter is 1/4 of described axis hole 4 diameter, the convenient processing of straight hole.The average equalizing orifice 3 of circumference is used for balance portion axial force, makes impeller be unlikely to excessive mechanical attrition, increases the working life of impeller.Back shroud 2 with fluted 5, only retain the sub-fraction back shroud supporting prismatic blade 1, lifting surface area is little, can eliminate preferably due to caused axial force asymmetric before and after impeller, impeller be run more stable.
Claims (5)
1. a centrifugal pump unshrouded impeller, be included in the axis hole (4) of back shroud (2) the uniform blade of upper circumference and central position, it is characterized in that: described blade is eight prismatic blades (1), blade inlet edge (101) is outward-dipping, is 30 ° with axis; Described back shroud (2) is between two prismatic blades (1), eight parabolic shape breach are had to be that groove (6) circumference is uniform, parabola summit (601) is at 2/3 place of impeller outer diameter, and left and right edges is 15 ° of angles with corresponding left and right blade respectively; Described impeller is also provided with eight uniform equalizing orifices (3) of circumference at 1/3 place of the impeller outer diameter of the inner side on groove (6) summit (601).
2. centrifugal pump unshrouded impeller as claimed in claim 1, is characterized in that: described prismatic blade (1), and import and export laying angle and be 90 °, blade inlet edge (101) is outward-dipping, is 30 ° with axis.
3. centrifugal pump unshrouded impeller as claimed in claim 1, is characterized in that: the pitch circle diameter of described equalizing orifice (3) is 1/3 place of impeller outer diameter.
4. centrifugal pump unshrouded impeller as claimed in claim 3, is characterized in that: described equalizing orifice (3) is in pre-small post-large horn-like, and average diameter is 1/4 of described axis hole (4) diameter.
5. centrifugal pump unshrouded impeller as claimed in claim 3, it is characterized in that: described equalizing orifice (3) is elongated circular hole, diameter is 1/4 of described axis hole (4) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401447.XU CN204985053U (en) | 2015-06-12 | 2015-06-12 | Centrifugal pump open impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520401447.XU CN204985053U (en) | 2015-06-12 | 2015-06-12 | Centrifugal pump open impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204985053U true CN204985053U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520401447.XU Expired - Fee Related CN204985053U (en) | 2015-06-12 | 2015-06-12 | Centrifugal pump open impeller |
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| CN (1) | CN204985053U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035718A (en) * | 2017-06-09 | 2017-08-11 | 湖南机油泵股份有限公司 | A kind of semi-open type or double shrouded wheel |
| CN108331784A (en) * | 2018-04-16 | 2018-07-27 | 浙江理工大学 | Centrifugal pump unshrouded impeller structure |
| CN109779960A (en) * | 2017-11-12 | 2019-05-21 | 湖北华联泵业有限公司 | A kind of distributed automobile water pump vane |
| CN110094357A (en) * | 2019-04-03 | 2019-08-06 | 青岛经济技术开发区海尔热水器有限公司 | Impeller for centrifugal pump, centrifugal pump and household appliance |
| CN110439849A (en) * | 2019-09-17 | 2019-11-12 | 河南瑞昂畜牧科技有限公司 | Impeller of pump and receded disk impeller pump |
-
2015
- 2015-06-12 CN CN201520401447.XU patent/CN204985053U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035718A (en) * | 2017-06-09 | 2017-08-11 | 湖南机油泵股份有限公司 | A kind of semi-open type or double shrouded wheel |
| CN109779960A (en) * | 2017-11-12 | 2019-05-21 | 湖北华联泵业有限公司 | A kind of distributed automobile water pump vane |
| CN108331784A (en) * | 2018-04-16 | 2018-07-27 | 浙江理工大学 | Centrifugal pump unshrouded impeller structure |
| CN108331784B (en) * | 2018-04-16 | 2024-04-12 | 浙江理工大学 | Centrifugal pump open impeller structure |
| CN110094357A (en) * | 2019-04-03 | 2019-08-06 | 青岛经济技术开发区海尔热水器有限公司 | Impeller for centrifugal pump, centrifugal pump and household appliance |
| CN110439849A (en) * | 2019-09-17 | 2019-11-12 | 河南瑞昂畜牧科技有限公司 | Impeller of pump and receded disk impeller 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: 20160120 Termination date: 20160612 |