CN204783717U - Multistage vertical high specific speed mixed flow pump - Google Patents

Multistage vertical high specific speed mixed flow pump Download PDF

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Publication number
CN204783717U
CN204783717U CN201520482629.4U CN201520482629U CN204783717U CN 204783717 U CN204783717 U CN 204783717U CN 201520482629 U CN201520482629 U CN 201520482629U CN 204783717 U CN204783717 U CN 204783717U
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CN
China
Prior art keywords
impeller
flow pump
mixed flow
specific speed
diffuser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520482629.4U
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Chinese (zh)
Inventor
伍春花
陈云
王辉
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HUNAN NANFANG CHANGHE PUMPS Co Ltd
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HUNAN NANFANG CHANGHE PUMPS Co Ltd
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Priority to CN201520482629.4U priority Critical patent/CN204783717U/en
Application granted granted Critical
Publication of CN204783717U publication Critical patent/CN204783717U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a multistage vertical high specific speed mixed flow pump, it includes the suction bell mouth and sets up the drive shaft at the center, suction bell mouth upper end is connected with the chopped -off head diffuser, chopped -off head diffuser upper end is connected with secondary diffuser, be provided with the chopped -off head impeller between suction bell mouth and the chopped -off head diffuser, be provided with secondary impeller between chopped -off head diffuser and the secondary diffuser, chopped -off head impeller, secondary impeller all set up in the drive shaft, transition section in the middle of being connected with between chopped -off head diffuser and the secondary diffuser, be provided with secondary impeller between middle transition section and the secondary diffuser, middle transition section is provided with leading -in chamber, leading -in chamber is connected with derives the chamber, be provided with the ferry between leading -in chamber and the derivation chamber, leading -in intracavity wall evenly is provided with transition water conservancy diversion piece, middle transition section both ends all are provided with flange. Its lift is high, and the flow is big, and is efficient, small, low in production cost, and simple to operate improves the practical scope of vertical mixed flow pump greatly.

Description

A kind of multistage vertical type higher specific speed mixed flow pump
Technical field
The present invention relates to pumps design technical field, refer more particularly to a kind of multistage vertical type higher specific speed mixed flow pump.
Background technique
Mixed flow pump is a kind of pump between centrifugal pump and axial-flow pump, and its existing centrifugal force of the effect of impeller to liquid has end thrust again, is the comprehensive of centrifugal pump and axial-flow pump, the oblique outflow impeller of liquid.It is mainly for delivery of medium that is clean and that pollute, chemically neutral or rodent medium, pump circulation, sea-farming, town gas engineering, water treatment system in chemical-process.
The specific speed scope of vertical mixed flow pump is between 170-600, and the specific speed of higher specific speed mixed flow pump is generally greater than 200, and its efficiency is high, and flow is large, and lift is low.For the pump foundation hole in pump improvement project can not again construct change time, although the vertical single-stage mixed flow pump lift that we adopt is higher, but the specific speed of pump is less than normal, efficiency reduces, and specific speed is less, then diffuser radial dimension is larger, because single-stage pump diffuser place diameter is too large, cause pump group cannot hang in pump foundation hole, cause engineered cannot realization.General water pump can increase progression to improve its lift, but the outlet of the stator of vertical mixed flow pump is much larger than impeller inlet diameter, if multistage direct transition, the import fluidised form heavy clutter of pump impeller can be caused, greatly reduce the efficiency of pump, therefore vertical mixed flow pump is single step arrangement.
By patent retrieval, there is following known prior art:
Patent 1:
Application number: 201320140351.3, the applying date: 2013.03.26, authorized announcement date: 2013.10.16, the utility model discloses a kind of mixed flow pump, and comprise motor, coupling, outlet pipe, motor is connected with main shaft by coupling; Main shaft is provided with three grades or multi-stage impeller; Motor is provided with intelligent controller and speed regulator; Outlet pipe is provided with regulating valve; The left side of regulating valve is provided with flowmeter, pressure transducer and thermometer.The utility model has intelligent function can carry out intelligentized control method, and after adopting multilevel design, lift is long, power foot, more practical.
Patent 2:
Application number: 201410070450.8, the applying date: 2014.02.28, Shen Qing Publication day: 2014.05.28, the invention belongs to pump technology field, is a kind of high speed axial-flow pump, the pump housing and the integral formula structure of drive motor.The motor shaft of described drive motor is provided with the aial flow impeller of or more, described drive motor is brush DC high-speed permanent magnet motor or high-speed permanent magnetic synchronous motor.The present invention is the high speed axial-flow pump made of brush DC high-speed permanent magnet motor or high-speed permanent magnetic synchronous motor, the axle of motor is provided with the aial flow impeller of or more, impeller is according to lift demand single-stage or multistage, the aial flow impeller of one stage impeller then becomes mixed flow pump, and more than two-stage is axial flow pump.This axial-flow pump envelope-bulk to weight ratio same specification conventional well submersible pump and horizontal centrifugal pump much little, feature is that flow is large, and the very low concept of lift then off the beaten track axial-flow pump, reaches the general centrifugal lift of pump of same specification receded disk impeller.Be a kind of large discharge, without blocking, energy-efficient, volume is little, lightweight, intelligentized axial-flow pump.
Found by above retrieval, above technological scheme can not affect novelty of the present invention; And the mutual combination of above patent document can not destroy creativeness of the present invention.
Summary of the invention
Object of the present invention is for providing a kind of multistage vertical type higher specific speed mixed flow pump, and its lift is high, and flow is large, and efficiency is high, and volume is little, and cost of production is low, easy for installation, greatly improves the usage range of vertical mixed flow pump.
For realizing above object, this inventionthe technological scheme adopted is: a kind of multistage vertical type higher specific speed mixed flow pump, and it comprises suction cone (1) and is arranged on the live axle (8) at center; Described suction cone (1) upper end is connected with first-level guide blade body (3); Described first-level guide blade body (3) upper end is connected with secondary diffuser (6); First stage impeller (2) is provided with between described suction cone (1) and first-level guide blade body (3); Secondary impeller (5) is provided with between described first-level guide blade body (3) and secondary diffuser (6); Described first stage impeller (2), secondary impeller (5) are all arranged on live axle (8), be connected with middle transition and save (4) between described first-level guide blade body (3) and secondary diffuser (6); Secondary impeller (5) is provided with between described middle transition joint (4) and secondary diffuser (6); Described middle transition joint (4) is provided with introduction chamber (43); Described introduction chamber (43) is connected with export cavity (41); Ferry (42) was provided with between described introduction chamber (43) and export cavity (41); Described introduction chamber (43) inwall is evenly provided with transition guide plate (44); Described middle transition joint (4) two ends are provided with adpting flange (45).
Further, described first stage impeller (2), secondary impeller (5) are mixed-flow impeller.
Further, described first-level guide blade body (3) is provided with and is no less than 2; Between described first-level guide blade body (3) and first-level guide blade body (3) and and secondary diffuser (6) between be provided with middle transition and save (4).
Further, described introduction chamber (43) is conical bores, and its osculum end was connected with ferry (42); Described export cavity (41) is conical bores, and its osculum end was connected with ferry (42), and its big opening end diameter is greater than the maximum outside diameter of secondary impeller (5).
Further, described ferry (42) are excessively cylinder counter bore structure, and its counterbore direction is towards export cavity (41) direction; Described ferry (42) intracavity diameter of crossing is greater than secondary impeller (5) top external diameter.
Further, described transition guide plate (44) is provided with and is no less than three.
Further, described transition guide plate (44) is trapezoidal plate structure, and its long limit end is arranged on introduction chamber (43) inwall.
Further, the circle edge of described adpting flange (45) is evenly provided with mounting hole (451).
Further, more than three stiffening ribs (46) are evenly provided with between described adpting flange (45).
Further, described stiffening rib (46) is provided with erection opening (461).
This inventionbeneficial effect:
1, the middle transition that this water pump is set up saves, solving higher specific speed vertical mixed flow pump for a long time can only be the problem of single step arrangement, do not affecting in pump efficiency situation, successfully realizing vertical mixed flow pump is multilevel hierarchy, widen higher specific speed vertical Francis lift of pump using scope, and substantially increase its working efficiency, expand its using scope.
2, the middle transition joint that this water pump is set up makes higher specific speed vertical mixed flow pump realize multilevel hierarchy, and reduce the overall radial dimension of vertical mixed flow pump, make this water pump easier for installation, using scope is more extensive.
3, the middle transition joint that this water pump is set up makes higher specific speed vertical mixed flow pump realize multilevel hierarchy, reduces the rotational speed of impeller under same power situation, decreases disc friction losses, reduces the vibration of pump group and improves efficiency and the working life of pump.
4, the middle transition joint that this water pump is set up mounts and dismounts very convenient, makes higher specific speed vertical mixed flow pump can realize few level and multi-stage transformation easily, substantially increases it and use flexibility ratio, make its Applicable scope more extensive.
5, the middle transition joint set up achieves and exports smooth mistake from stator and flow to secondary impeller import, its introduction chamber inwall is provided with transition guide plate, improves the medium entrance fluidised form of vertical mixed flow pump, improve the stability flowing into medium, reduce the pulse of pump group.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the complete section figure of the middle transition joint in the present invention.
Fig. 3 is perspective view of the present invention.
Shown in figure, numerical reference is expressed as: 1, suction cone, and 2, first stage impeller, 3, first-level guide blade body, 4, middle transition joint, 5, secondary impeller, 6, secondary diffuser, 7, horn mouth guide vane, 8, live axle, 41, export cavity, 42, ferry is crossed, 43, introduction chamber, 44, transition guide plate, 45, adpting flange, 46, stiffening rib, 451, mounting hole, 461, erection opening.
Embodiment
In order to make those skilled in the art understand technological scheme of the present invention better, describe the present invention below in conjunction with accompanying drawing, the description of this part is only exemplary and explanatory, should not have any restriction to protection scope of the present invention.
As Figure 1-3, it is a kind of multistage vertical type higher specific speed mixed flow pump that anatomical connectivity of the present invention closes, and it comprises suction cone 1 and is arranged on the live axle 8 at center; Described suction cone 1 upper end is connected with first-level guide blade body 3; Described first-level guide blade body 3 upper end is connected with secondary diffuser 6; First stage impeller 2 is provided with between described suction cone 1 and first-level guide blade body 3; Secondary impeller 5 is provided with between described first-level guide blade body 3 and secondary diffuser 6; Described first stage impeller 2, secondary impeller 5 are all arranged on live axle 8, be connected with middle transition and save 4 between described first-level guide blade body 3 and secondary diffuser 6; Secondary impeller 5 is provided with between described middle transition joint 4 and secondary diffuser 6; Described middle transition joint 4 is provided with introduction chamber 43; Described introduction chamber 43 is connected with export cavity 41; Ferry 42 was provided with between described introduction chamber 43 and export cavity 41; Described introduction chamber 43 inwall is evenly provided with transition guide plate 44; Described middle transition saves 4 two ends and is provided with adpting flange 45.
Preferably, described first stage impeller 2, secondary impeller 5 are mixed-flow impeller.
Preferably, described first-level guide blade body 3 is provided with and is no less than 2; Between described first-level guide blade body (3) and first-level guide blade body (3) and be provided with middle transition between first-level guide blade body (3) and secondary diffuser 6 and save 4.
Preferably, described introduction chamber 43 is conical bores, and its osculum end was connected with ferry 42; Described export cavity 41 is conical bores, and its osculum end was connected with ferry 42, and its big opening end diameter is greater than the maximum outside diameter of secondary impeller 5.
Preferably, described ferry 42 is excessively cylinder counter bore structure, and its counterbore direction is towards export cavity 41 direction; Described ferry 42 intracavity diameter of crossing is greater than secondary impeller 5 top external diameter.
Preferably, described transition guide plate 44 is provided with and is no less than three.
Preferably, described transition guide plate 44 is trapezoidal plate structure, and its long limit end is arranged on introduction chamber 43 inwall.
Preferably, the circle edge of described adpting flange 45 is evenly provided with mounting hole 451.
Preferably, more than three stiffening ribs 46 are evenly provided with between described adpting flange 45.
Preferably, described stiffening rib 46 is provided with erection opening 461.
The principle of the invention: because the stator outlet of vertical mixed flow pump is much larger than impeller inlet diameter, if multistage direct transition, the import fluidised form heavy clutter of pump can be caused, be provided with between diffuser and impeller one can installation for convenience detach middle transition joint, what it can make inflow media stabilize enters in secondary impeller from diffuser, middle transition saves the inverted cone cavity body that inner two ends are set to flowing transition, and introduction chamber inwall is provided with transition guide plate, ensure that the stable transition flowing into medium; Middle transition joint in the present invention can be provided with multiple in the vertical mixed flow pump of higher specific speed, higher specific speed vertical mixed flow pump is made to become few level from single-stage or become multistage from few level, reduce the entire outer diameter of vertical mixed flow pump simultaneously, widen the efficiency using range of lift and improve pump, also greatly expand its using scope.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.
Apply specific case herein to set forth principle of the present invention and mode of execution, the explanation of above example just understands method of the present invention and core concept thereof for helping.The above is only the preferred embodiment of the present invention, should be understood that, due to the finiteness of literal expression, and objectively there is unlimited concrete structure, for those skilled in the art, under the premise without departing from the principles of the invention, some improvement, retouching or change can also be made, also above-mentioned technical characteristics can be combined by rights; These improve retouching, change or combination, or the design of invention and technological scheme are directly applied to other occasion without improving, and all should be considered as protection scope of the present invention.

Claims (10)

1. a multistage vertical type higher specific speed mixed flow pump, it comprises suction cone (1) and is arranged on the live axle (8) at center; Described suction cone (1) upper end is connected with first-level guide blade body (3); Described first-level guide blade body (3) upper end is connected with secondary diffuser (6); First stage impeller (2) is provided with between described suction cone (1) and first-level guide blade body (3); Secondary impeller (5) is provided with between described first-level guide blade body (3) and secondary diffuser (6); Described first stage impeller (2), secondary impeller (5) are all arranged on live axle (8), it is characterized in that, be connected with middle transition and save (4) between described first-level guide blade body (3) and secondary diffuser (6); Secondary impeller (5) is provided with between described middle transition joint (4) and secondary diffuser (6); Described middle transition joint (4) is provided with introduction chamber (43); Described introduction chamber (43) is connected with export cavity (41); Ferry (42) was provided with between described introduction chamber (43) and export cavity (41); Described introduction chamber (43) inwall is evenly provided with transition guide plate (44); Described middle transition joint (4) two ends are provided with adpting flange (45).
2. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, is characterized in that, described first stage impeller (2), secondary impeller (5) are mixed-flow impeller.
3. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, is characterized in that, described first-level guide blade body (3) is provided with and is no less than 2; Middle transition joint (4) is provided with between described first-level guide blade body (3).
4. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, it is characterized in that, described introduction chamber (43) is conical bores, and its osculum end was connected with ferry (42); Described export cavity (41) is conical bores, and its osculum end was connected with ferry (42), and its big opening end diameter is greater than the maximum outside diameter of secondary impeller (5).
5. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 4, is characterized in that, described ferry (42) are excessively cylinder counter bore structure, and its counterbore direction is towards export cavity (41) direction; Described ferry (42) intracavity diameter of crossing is greater than secondary impeller (5) top external diameter.
6. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, is characterized in that, described transition guide plate (44) is provided with and is no less than three.
7. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, is characterized in that, described transition guide plate (44) is trapezoidal plate structure, and its long limit end is arranged on introduction chamber (43) inwall.
8. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, is characterized in that, the circle edge of described adpting flange (45) is evenly provided with mounting hole (451).
9. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 1, is characterized in that, is evenly provided with more than three stiffening ribs (46) between described adpting flange (45).
10. a kind of multistage vertical type higher specific speed mixed flow pump according to claim 9, is characterized in that, described stiffening rib (46) is provided with erection opening (461).
CN201520482629.4U 2015-07-07 2015-07-07 Multistage vertical high specific speed mixed flow pump Expired - Fee Related CN204783717U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201520482629.4U CN204783717U (en) 2015-07-07 2015-07-07 Multistage vertical high specific speed mixed flow pump

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963874A (en) * 2015-07-07 2015-10-07 湖南南方长河泵业有限公司 Multi-stage vertical high specific speed mixed-flow pump
CN111894873A (en) * 2020-08-08 2020-11-06 绍兴智新机电科技有限公司 Two-stage mixed-flow low-noise fan

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963874A (en) * 2015-07-07 2015-10-07 湖南南方长河泵业有限公司 Multi-stage vertical high specific speed mixed-flow pump
CN111894873A (en) * 2020-08-08 2020-11-06 绍兴智新机电科技有限公司 Two-stage mixed-flow low-noise fan

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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: 20151118

Termination date: 20180707