CN210290254U - Centrifugal impeller with splitter blades - Google Patents
Centrifugal impeller with splitter blades Download PDFInfo
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- CN210290254U CN210290254U CN201920850590.5U CN201920850590U CN210290254U CN 210290254 U CN210290254 U CN 210290254U CN 201920850590 U CN201920850590 U CN 201920850590U CN 210290254 U CN210290254 U CN 210290254U
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- cover plate
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Abstract
The utility model discloses a centrifugal impeller with splitter blades, which mainly comprises a front cover plate, blades, splitter blades and a rear cover plate, wherein an inner cavity is formed between the front cover plate and the rear cover plate at a certain distance, a plurality of blades are spirally and uniformly distributed on the inner side of the rear cover plate from the center to the periphery, the inner cavity between the front cover plate and the rear cover plate is separated by adjacent blades to form a runner, a runner outlet is formed at the edge close to the rear cover plate, and two splitter blades are uniformly arranged at the runner outlet; the front cover plate, the blades, the splitter blades and the rear cover plate are all formed by adopting a stamping process and are welded to form a closed impeller. The utility model discloses beneficial effect: when the fluid flows out of the impeller, the splitter blades inhibit the diffusion of the fluid, reduce the pressure pulsation in the pump and the probability of vortex formation at the outlet of the impeller, and improve the operation stability and efficiency of the pump; the splitter blades are short and only arranged at the outlet of the impeller, so that the influence on the displacement coefficient of the flow passage is small, and the influence on the efficiency of the pump is small.
Description
Technical Field
The utility model relates to a field of impeller pump, concretely relates to take splitter blade's centrifugal impeller.
Background
Vibration has been one of the major issues of research, regarding the stability of pump operation. Dynamic and static interference between rotating and stationary components inside the pump causes pressure pulsation inside the pump, thereby causing vibration of the pump.
The use of splitter blades is one of the primary methods of suppressing pressure pulsations in the pump. At present, the splitter blades mainly have two types: one is a first splitter blade impeller, add a splitter blade in the middle of each runner, its advantage is that can improve the flow field distribution in the impeller effectively, but in the small flow, the density of the blade is insufficient, the fluid constraint is small, the impeller exit produces phenomena such as jet-wake, secondary flow easily; the other is a secondary splitter blade impeller, in which a long splitter blade and two short splitter blades are placed in each flow channel, but the secondary splitter blade flow channel is narrow, which may cause the efficiency of the pump to decrease. In addition, the diameters of the inlet sides of the two splitter blades are smaller, and the splitter blades are longer, so that the input of shaft power can be increased, and the flow field distribution in a flow channel can be changed. In summary, the prior art: on one hand, fluid at the outlet of the impeller is easy to diffuse, pressure pulsation is induced, the running stability of the pump is influenced, and the efficiency of the pump is reduced; on the other hand, the main flow splitter blade is long, and influences the moving state of the fluid in the pump flow channel while suppressing the diffusion of the fluid at the impeller outlet.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the not enough of prior art existence, and provide a take splitter blade's centrifugal impeller.
The purpose of the utility model is accomplished through following technical scheme: the centrifugal impeller with the splitter blades mainly comprises a front cover plate, blades, splitter blades, a rear cover plate, a flow channel and a flow channel outlet, wherein the front cover plate and the rear cover plate are arranged at a certain distance to form an internal cavity; the front cover plate, the blades, the splitter blades and the rear cover plate are all formed by adopting a stamping process and are welded to form a closed impeller.
Further, the blade and the splitter blade are both cylindrical equal-thickness blades, the thickness of the blade is t, and the thickness t of the splitter blade is t2＝0.5～0.6t。
Furthermore, the number of the blades is Z, and the angle theta between the blades and the splitter blade2＝360/3Z。
Further, the length of the splitter blade is about 15% of the length of the blade; diameter D of outlet edge of splitter blade2The diameter D of the inlet edge of the splitter blade is 0.9-0.95D same as that of the blade2。
The utility model has the advantages that:
1. when fluid flows out of the impeller, the splitter blade inhibits the diffusion of the fluid, reduces the pressure pulsation in the pump and the probability of vortex formation at the outlet of the impeller, and improves the stability and efficiency of the operation of the pump;
2. the splitter blades are short and only arranged at the outlet of the impeller, so that the influence on the displacement coefficient of the flow passage is small, and the influence on the efficiency of the pump is small.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a structural plan view of the present invention.
Fig. 3 is a structural sectional view of the present invention.
Description of reference numerals: the device comprises a front cover plate 1, blades 2, splitter blades 3, a rear cover plate 4, a flow channel 5 and a flow channel outlet 6.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
example (b): as shown in the attached drawings, the centrifugal impeller with the splitter blades mainly comprises a front cover plate 1, blades 2, splitter blades 3, a rear cover plate 4, a flow channel 5 and a flow channel outlet 6, wherein the front cover plate 1 and the rear cover plate 4 are arranged at a certain distance to form an internal cavity, a plurality of blades 2 are uniformly distributed on the inner side of the rear cover plate 4 from the center to the periphery in a spiral shape, the internal cavity between the front cover plate 1 and the rear cover plate 4 is separated by the adjacent blades 2 to form the flow channel 5, the flow channel 5 forms the flow channel outlet 6 at the edge close to the rear cover plate 4, and two splitter blades 3 are uniformly distributed at the flow channel outlet 6; the front cover plate 1, the blades 2, the splitter blades 3 and the rear cover plate 4 are all formed by adopting a stamping process and are welded to form a closed impeller.
Preferably, the blade 2 and the splitter blade 3 are both cylindrical blades with equal thickness, the thickness of the blade 2 is t, and the thickness t of the splitter blade 3 is t2＝0.5～0.6t(t2Too large reduces the packing factor of the flow channel and too small results in insufficient strength).
Preferably, the number of the blades 2 is Z, and the angle theta between the blades 2 and the splitter blade 32＝360/3Z。
Preferably, the length of the splitter blade 3 is about 15% of that of the blade 2 (too short to inhibit the diffusion of the fluid at the outlet of the impeller, too long affecting the internal flow pattern of the pump flow channel); diameter D of outlet edge of splitter blade 32The diameter D of the inlet edge of the splitter blade 3 is 0.9-0.95D same as that of the blade 22。
The utility model discloses a working process: when the impeller works, fluid is sucked from the inlet of the impeller and enters each flow channel 5 of the impeller, and the blades 2 do work on the fluid to enable the fluid to flow out of the impeller. When fluid passes through the splitter vane 3, the splitter vane 3 works to inhibit the diffusion of the fluid, so that the pressure pulsation in the pump and the probability of vortex formation at the outlet of the impeller are reduced, and the stability and the efficiency of the pump are improved.
It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.
Claims (4)
1. The utility model provides a take splitter blade's centrifugal impeller which characterized in that: the novel flow channel mainly comprises a front cover plate (1), blades (2), splitter blades (3), a rear cover plate (4), a flow channel (5) and a flow channel outlet (6), wherein the front cover plate (1) and the rear cover plate (4) are arranged at a certain distance to form an internal cavity, a plurality of blades (2) are uniformly distributed on the inner side of the rear cover plate (4) from the center to the periphery in a spiral shape, the internal cavities between the front cover plate (1) and the rear cover plate (4) are separated by adjacent blades (2) to form the flow channel (5), the flow channel (5) forms the flow channel outlet (6) at the edge close to the rear cover plate (4), and two splitter blades (3) are uniformly distributed at the flow channel outlet (6); the front cover plate (1), the blades (2), the splitter blades (3) and the rear cover plate (4) are all formed by adopting a stamping process and are welded to form a closed impeller.
2. The centrifugal impeller with splitter blades according to claim 1, wherein: the blade (2) and the splitter blade (3) are both cylindrical equal-thickness blades, the thickness of the blade (2) is t, and the thickness t of the splitter blade (3) is t2＝0.5～0.6t。
3. The centrifugal impeller with splitter blades according to claim 1, wherein: the number of the blades (2) is Z, and the angle theta between the blades (2) and the splitter blade (3)2＝360/3Z。
4. The centrifugal impeller with splitter blades according to claim 1, wherein: the length of the splitter blade (3) is 15% of that of the blade (2); diameter D of outlet edge of splitter blade (3)2The diameter D of the inlet edge of the splitter blade (3) is 0.9-0.95D as same as that of the blade (2)2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920850590.5U CN210290254U (en) | 2019-06-06 | 2019-06-06 | Centrifugal impeller with splitter blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920850590.5U CN210290254U (en) | 2019-06-06 | 2019-06-06 | Centrifugal impeller with splitter blades |
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| Publication Number | Publication Date |
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| CN210290254U true CN210290254U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920850590.5U Active CN210290254U (en) | 2019-06-06 | 2019-06-06 | Centrifugal impeller with splitter blades |
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| CN (1) | CN210290254U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242612A (en) * | 2019-06-06 | 2019-09-17 | 南方泵业股份有限公司 | A kind of centrifugal impeller with splitterr vanes |
| CN114233638A (en) * | 2021-12-20 | 2022-03-25 | 嘉利特荏原泵业有限公司 | Large-traffic low cavitation slurry pump structure |
| CN115559932A (en) * | 2022-09-01 | 2023-01-03 | 江苏大学镇江流体工程装备技术研究院 | Cover plate extension type low-noise pump impeller with splitter blades |
-
2019
- 2019-06-06 CN CN201920850590.5U patent/CN210290254U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242612A (en) * | 2019-06-06 | 2019-09-17 | 南方泵业股份有限公司 | A kind of centrifugal impeller with splitterr vanes |
| CN114233638A (en) * | 2021-12-20 | 2022-03-25 | 嘉利特荏原泵业有限公司 | Large-traffic low cavitation slurry pump structure |
| CN115559932A (en) * | 2022-09-01 | 2023-01-03 | 江苏大学镇江流体工程装备技术研究院 | Cover plate extension type low-noise pump impeller with splitter blades |
| CN115559932B (en) * | 2022-09-01 | 2024-03-08 | 江苏大学镇江流体工程装备技术研究院 | Cover plate extension type low-noise pump impeller with splitter blades |
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