CN103244456B - A kind of centrifugal pump impeller - Google Patents

A kind of centrifugal pump impeller Download PDF

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Publication number
CN103244456B
CN103244456B CN201310163172.6A CN201310163172A CN103244456B CN 103244456 B CN103244456 B CN 103244456B CN 201310163172 A CN201310163172 A CN 201310163172A CN 103244456 B CN103244456 B CN 103244456B
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groove
impeller
pump
centrifugal pump
cover plate
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CN103244456A (en
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张翔
赖喜德
陈小明
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Xihua University
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Xihua University
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Abstract

The invention discloses a kind of centrifugal pump impeller.Comprise the wheel dish type cover plate forming centrifugal pump impeller, cover plate has the installation opposing side corresponding with the pump housing of centrifugal pump, pump cover or deflector, on cover plate, there is multiple groove on the surface of opposing side, groove is arranged symmetrically and evenly around opposing side, groove is at the outside opening of cover plate radial direction, and the pump housing of groove and centrifugal pump, pump cover or deflector form profile of tooth cavity.Impeller of the present invention gives energy transferring by profile of tooth cavity outside impeller cover the fluid flowing out impeller sprue.This exchange of kinetic energy transferring energy process by Three-dimensional Flow, can in the flow path of gear profile of whole circumference repeatedly, and what therefore have that common blade pump can not reach is high-lift.The present invention is keeping improve existing centrifugal lift of pump under physical dimension and the constant prerequisite of flow.

Description

A kind of centrifugal pump impeller
Technical field
The invention belongs to Machine Design and manufacture field, especially belong to Centrifugal Pump Design and manufacture field, particularly single-stage and multistage centrifugal pump Impeller Design manufacturing technology.
Background technique
Improve the key that centrifugal pump lift is centrifugal pump technology.The main method that existing common blade pump raising lift particularly closes dead point lift improves rotating speed and the increase impeller outer diameter of pump, and these methods all will increase the volume of manufacture cost and product.
Summary of the invention
The present invention discloses a kind of centrifugal pump impeller according to the deficiencies in the prior art.The present invention, by adopting novel composite impeller form rational fit system with pump body portion, constitutes the series operation model of two kinds of form impellers, effectively raises centrifugal lift of pump under revolution speed and the constant prerequisite of impeller size.
The present invention is achieved through the following technical solutions:
Centrifugal pump impeller, comprise the wheel dish type cover plate forming centrifugal pump impeller, cover plate has the installation opposing side corresponding with the pump housing of centrifugal pump, pump cover or deflector, it is characterized in that: on described cover plate, there is multiple groove on the surface of opposing side, groove is arranged symmetrically and evenly around opposing side, groove is at the outside opening of cover plate radial direction, and the pump housing of groove and centrifugal pump, pump cover or deflector form profile of tooth cavity.
Described groove is arranged on wheel dish type cover plate opposing side circumferentially, quantity is 24 ~ 60, the selection of groove number also will consider impeller diameter and manufacture method etc., and the maximum circumferential thickness of groove tooth between usual two adjacent grooves is 0.6 ~ 1.5 with the ratio of groove axial height.
Arranging of described groove is mainly considered from structure and intensity angle, and groove axial height is 0.4 ~ 0.6 times of impeller cover thickness, and groove radial length is about 1.1 ~ 2 times of axial height.
The present invention is when single stage centrifugal pump is applied, and impeller has two pieces of cover plates be oppositely arranged, and every block cover plate has setting groove on opposite sides respectively.
The present invention is when multistage centrifugal pump is applied, and impeller has one piece of cover plate, and cover plate has setting groove on opposite sides.
Core of the present invention is the profile of tooth cavity that reeded impeller and the pump housing coordinated with it, pump cover or deflector are formed, obtain more high-lift principle and be that the profile of tooth cavity body structure convection cell of the groove formation that impeller of the present invention is installed on opposing side periphery repeatedly repeats acting, improve the centrifugal lift of pump of common blade formula.Runner inside impeller cover is common blade pump impeller pattern, installs the runner that opposing side has similar vortex pump impeller outside cover plate, by with the coordinating to be formed and be similar to vortex pump structure of pump chamber and pump cover.The high-pressure liquid of impeller outlet obtains higher pressure after the repeated multiple times acting of profile of tooth cavity outside cover plate.
The energy of common blade formula centrifugal pump fluid only derives from the sprue of impeller, and in the present invention, the high-pressure liquid flowed out from impeller sprue will to flow into outside impeller in composite blading pump chamber again, through profile of tooth small leaf repeatedly convection cell repeat to do work and obtain higher pressure, thus improve centrifugal lift of pump.
Impeller of the present invention gives energy transferring by profile of tooth cavity outside impeller cover the fluid flowing out impeller sprue.This exchange of kinetic energy transferring energy process by Three-dimensional Flow, can in the flow path of gear profile of whole circumference repeatedly, and what therefore have that common blade pump can not reach is high-lift.The present invention is keeping improve existing centrifugal lift of pump under physical dimension and the constant prerequisite of flow.
Accompanying drawing explanation
Fig. 1 is single-stage centrifugal pump impeller plane structure schematic diagram of the present invention;
Fig. 2 is single-stage centrifugal pump impeller radial cross-section of the present invention;
Fig. 3 is single-stage centrifugal pump impeller schematic perspective view of the present invention;
Fig. 4 is one-stage centrifugal pump structure sectional view of the present invention;
Fig. 5 is single stage centrifugal pump profile of tooth cavity body structure enlarged diagram of the present invention, i.e. Fig. 4 close-up schematic view;
Fig. 6 is multistage centrifugal pump paddle wheel plane structural representation of the present invention;
Fig. 7 is multistage centrifugal pump impeller radial cross-section of the present invention;
Fig. 8 is multistage centrifugal pump impeller schematic perspective view of the present invention;
Fig. 9 is multistage centrifugal pump impeller installing cross-sectional schematic of the present invention;
Figure 10 is multistage centrifugal pump profile of tooth cavity body structure enlarged diagram of the present invention, i.e. Fig. 9 close-up schematic view.
In figure, 1 is impeller, and 1a is groove tooth, 1b groove, and 1c is opposing side, and 2 is pump housings, and 3 is profile of tooth cavitys, and 4 is pump covers, and 5 is deflectors.
Embodiment
Below by embodiment, the present invention is conducted further description; the present embodiment is only for being further detailed the present invention; but can not be interpreted as limiting the scope of the invention, those skilled in the art can make some nonessential improvement according to the content of the invention described above and adjustment belongs to the scope of protection of the invention.
Embodiment 1
Composition graphs 1 to Fig. 5.
This example is single stage centrifugal pump, as shown in the figure, centrifugal pump impeller 1 comprises the wheel dish type cover plate forming centrifugal pump impeller 1, single-stage centrifugal pump impeller 1 has two pieces of cover plates be oppositely arranged, cover plate has the installation opposing side 1c corresponding with the pump housing 2 of centrifugal pump, pump cover 4, on cover plate, there is multiple groove 1b on the surface of opposing side 1c, and groove 1b is arranged symmetrically and evenly around opposing side 1c, and groove 1b forms profile of tooth cavity 3 at the pump housing 2 of the outside opening of cover plate radial direction and centrifugal pump, pump cover 4.
Groove 1b is arranged on wheel dish type cover plate opposing side 1c circumferentially, and quantity is 24 ~ 60.
The maximum circumferential thickness of groove tooth 1a between two adjacent grooves 1b is 0.6 ~ 1.5 with the ratio of groove 1b axial height, 1.1 ~ 2 times that each groove 1b axial height is 0.4 ~ 0.6 times of impeller 1 cover sheet thickness, groove 1b radial length is about axial height.
Single-stage centrifugal pump impeller 1 is made up of two cover plates be oppositely arranged, and is main channel between cover plate, and usually under rotating centrifugal pressure, water enters pumping chamber from main channel, and two cover plates have with the pump housing 2 or pump cover 4 the opposing side 1c be rotatably assorted respectively, as shown in Figure 4; At the edge of two cover plate opposing side 1c, the present invention is provided with groove 1b, and so-called groove 1b is the shape of outer end opening drawer-like, and as shown in Figure 1, Figure 2 and Figure 3, groove 1b is arranged at the circumferential edges uniform intervals of cover plate opposing side 1c, outward opening; Groove 1b can be cube or other shapes.
Impeller 1 front and rear cover plate or only process the groove 1b of profile of tooth in one-sided cover plate outer rim, by with the pump housing 2 and coordinating of pump cover 4 form the profile of tooth cavity 3 of opening towards pumping chamber.The repeatedly acting that the high-pressure liquid flowed out from impeller 1 sprue flows into again through profile of tooth groove 1b in profile of tooth cavity 3 obtains higher pressure, thus improves centrifugal lift of pump.
The partial shape that the pump housing 2 and pump cover 4 coordinate with profile of tooth cavity 3 is not limited to plane, can be processed as arcuate surface, forms the cavity of greater room when coordinating with profile of tooth groove 1b.
Embodiment 2
Composition graphs 6 to Figure 10.
This example is multistage centrifugal pump, as shown in the figure, centrifugal pump impeller 1 comprises the wheel dish type cover plate forming centrifugal pump impeller 1, multistage centrifugal pump impeller 1 has a cover plate, cover plate has the installation opposing side 1c corresponding with the deflector 5 of centrifugal pump, on cover plate, there is multiple groove 1b on the surface of opposing side 1c, and groove 1b is arranged symmetrically and evenly around opposing side 1c, and groove 1b forms profile of tooth cavity 3 at the deflector 5 of the outside opening of cover plate radial direction and centrifugal pump.
Groove 1b is arranged on wheel dish type cover plate opposing side 1c circumferentially, and quantity is 24 ~ 60.
The maximum circumferential thickness of groove tooth 1a between two adjacent grooves 1b is 0.6 ~ 1.5 with the ratio of groove 1b axial height, 1.1 ~ 2 times that each groove 1b axial height is 0.4 ~ 0.6 times of impeller 1 cover sheet thickness, groove 1b radial length is about axial height.
Multistage centrifugal pump impeller 1 has many groups, and often organizing impeller 1 has the back shroud be rotatably assorted with deflector 5, and usually under many group impeller 1 rotating centrifugal pressure, water is pressurizeed repeatedly, and often organizing cover plate has the opposing side 1c be rotatably assorted with deflector 5 respectively, as shown in Figure 9; At the edge of cover plate opposing side 1c, the present invention is provided with groove 1b, and so-called groove 1b is the shape of outer end opening drawer-like, and as shown in Fig. 6, Fig. 7 and Figure 10, groove 1b is arranged at the circumferential edges uniform intervals of cover plate opposing side 1c, outward opening; Groove 1b can be cube or other shapes.
Runner inside this routine impeller 1 front and rear cover plate is common blade pump impeller pattern, processes the groove 1b of profile of tooth outside back shroud, by forming the profile of tooth cavity 3 of opening towards pumping chamber with coordinating of deflector 5.The repeatedly acting that the high-pressure liquid flowed out from impeller 1 sprue flows into again through profile of tooth groove 1b in profile of tooth cavity 3 obtains higher pressure, thus improves centrifugal lift of pump.
The partial shape that deflector 5 coordinates with profile of tooth cavity 3 is not limited to plane, can be processed as arcuate surface, forms the cavity of greater room when coordinating with profile of tooth groove 1b.

Claims (4)

1. a centrifugal pump impeller, comprise the wheel dish type cover plate forming centrifugal pump impeller (1), cover plate has the installation opposing side (1c) corresponding with the pump housing of centrifugal pump, pump cover or deflector, it is characterized in that:
On described cover plate, there is multiple groove (1b) on the surface of opposing side (1c), groove (1b) is arranged symmetrically and evenly around opposing side (1c), groove (1b) is at the outside opening of cover plate radial direction, and the pump housing of groove (1b) and centrifugal pump, pump cover or deflector form profile of tooth cavity (3);
Groove tooth (1a) maximum circumferential thickness between two adjacent grooves (1b) and the ratio of groove (1b) axial height are 0.6 ~ 1.5,0.4 ~ 0.6 times that each groove (1b) axial height is impeller (1) cover sheet thickness, groove (1b) radial length is axial height 1.1 ~ 2 times.
2. centrifugal pump impeller according to claim 1, is characterized in that: described groove (1b) is arranged on wheel dish type cover plate opposing side (1c) circumferentially, and quantity is 24 ~ 60.
3. centrifugal pump impeller according to claim 1 and 2, it is characterized in that: described centrifugal pump is single stage centrifugal pump, impeller (1) has two pieces of cover plates be oppositely arranged, and every block cover plate has the groove (1b) be arranged on opposing side (1c) respectively.
4. centrifugal pump impeller according to claim 1 and 2, is characterized in that: described centrifugal pump is multistage centrifugal pump, and impeller (1) has one piece of cover plate, and cover plate has the groove (1b) be arranged on opposing side (1c).
CN201310163172.6A 2013-05-06 2013-05-06 A kind of centrifugal pump impeller Active CN103244456B (en)

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CN103244456B true CN103244456B (en) 2016-04-13

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104314860A (en) * 2014-09-24 2015-01-28 江苏大学 Impeller for low-specific speed centrifugal pump
US10907647B2 (en) 2015-08-24 2021-02-02 Woodward, Inc. Centrifugal pump with serrated impeller

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2087250U (en) * 1991-03-25 1991-10-23 何继国 High effiency self-suction pump
CN1071230A (en) * 1991-09-23 1993-04-21 卢才美 Very-high-lift vortex pump
CN2268792Y (en) * 1995-08-04 1997-11-26 临沂市水泵厂 Centrifugal water pump impeller
CN203272226U (en) * 2013-05-06 2013-11-06 西华大学 Centrifugal pump impeller

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055916A1 (en) * 2005-11-28 2007-07-05 Aisan Kogyo K.K., Obu pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2087250U (en) * 1991-03-25 1991-10-23 何继国 High effiency self-suction pump
CN1071230A (en) * 1991-09-23 1993-04-21 卢才美 Very-high-lift vortex pump
CN2268792Y (en) * 1995-08-04 1997-11-26 临沂市水泵厂 Centrifugal water pump impeller
CN203272226U (en) * 2013-05-06 2013-11-06 西华大学 Centrifugal pump impeller

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