CN105570185B - A kind of Procedure of Single-channel Pump impeller with balanced radial force disk - Google Patents

A kind of Procedure of Single-channel Pump impeller with balanced radial force disk Download PDF

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Publication number
CN105570185B
CN105570185B CN201610047592.1A CN201610047592A CN105570185B CN 105570185 B CN105570185 B CN 105570185B CN 201610047592 A CN201610047592 A CN 201610047592A CN 105570185 B CN105570185 B CN 105570185B
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China
Prior art keywords
impeller
eccentric disc
procedure
center
gravity
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Expired - Fee Related
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CN201610047592.1A
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Chinese (zh)
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CN105570185A (en
Inventor
谭林伟
施卫东
张德胜
张启华
黄�俊
赵睿杰
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Jiangsu University
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Jiangsu University
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Publication of CN105570185A publication Critical patent/CN105570185A/en
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Publication of CN105570185B publication Critical patent/CN105570185B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2238—Special flow patterns
    • F04D29/225—Channel wheels, e.g. one blade or one flow channel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/24—Vanes
    • F04D29/242—Geometry, shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous

Abstract

The invention discloses a kind of Procedure of Single-channel Pump impeller with balanced radial force disk, the impeller is double shrouded wheel, one runner is formed by one piece big cornerite high twist blade, runner flow section is ellipse, and an eccentric disc is housed, radial load caused by the centrifugation dynamic balance impeller operation produced by eccentric disc at back shroud of impeller.Eccentric disc center of gravity can be adjusted conveniently, can be applied to the Procedure of Single-channel Pump impeller of different series by adjusting the position of disk center of gravity, a kind of disk of specification during installation.It is mainly characterized by without block, anti-winding ability it is strong, suitable for conveying contain long fibre and solid particle or the material higher to non-destructive；Radial load is in a basic balance, improves the operation stability and reliability of pump；Processing technology requirement is reduced, it is suitable for mass production, reduce production cost.

Description

A kind of Procedure of Single-channel Pump impeller with balanced radial force disk
Technical field
The present invention relates to a kind of force self-balanced Non-blinding pump impeller of radial direction, especially suitable for conveying containing long fibre and admittedly The material of body particle, belongs to fluid machinery technical field.
Background technology
When pumping is sent containing arbitrary shape suspended solids and during fibrous material, often there is clogging, cause stream Amount reduces, vibration aggravates, even results in burn-down of electrical machinery, therefore have developed a variety of Non-blinding pump impellers currently on the market, mainly There are half-opened impeller, spiral centrifugal impeller, flow channel type impeller etc..Half-opened impeller is less efficient, axial force is big；Spiral leaf Wheel manufacture is difficult, defect rate is high；The anti-winding of flow channel type impeller, blocking-free performance can be optimal, and the efficiency of pump is higher, and power curve is flat, Wear-resisting property is also relatively good, is widely used.Flow channel type impeller mainly has single channel and dual channel formula, and reducing impeller blade number can have Effect increase impeller channel flow section area, the number of blade is fewer, and its handling capacity is stronger, therefore Procedure of Single-channel Pump impeller is with splendid Anti- winding, anti-clogging ability, while Procedure of Single-channel Pump high efficient district is wide, head curve is steeper, lossless performance have well it is wide should Use prospect.But since the unsymmetric structure of Procedure of Single-channel Pump, its quality are difficult to balance, while impeller operationally its pressure circumference Distribution is asymmetric, uneven there are larger waterpower.This causes that Procedure of Single-channel Pump remnants radial loads are larger, and operation stability cannot be protected Barrier, have impact on the service life of pump.Manufacturer mainly takes at present comes in Procedure of Single-channel Pump impeller cover counterweight, the method for cutting Balance.In order to reach the balance of degree of precision, generally require by multiple balance test and machining.This method production efficiency Relatively low, production cost is high, is not suitable for batch production, limits the popularization and application of Procedure of Single-channel Pump.
The content of the invention
To solve the above problems, invention a kind of Procedure of Single-channel Pump impeller with balanced radial force disk, purpose exist In providing a kind of Procedure of Single-channel Pump impeller suitable for mass production, to meet municipal administration, environmental protection, sewage disposal, food, weaving, chemical industry Etc. industry to pumping anti-wind, without blocking, reliable requirement.
The technical solution adopted by the present invention：The balanced radial force disk of the present invention is an eccentric disc, and impeller uses one piece Big cornerite high twist blade, between cornerite is 320 °~420 °, envelope forms a single runner, and blade is by inlet part indent Outlet portion evagination is gradually transitions, runner flow section is ellipse, increases impeller channel flow section area, reduces conveying The winding such as particle, fiber, the possibility for hooking, blocking.One disk is housed, disk is synchronously revolved with impeller at back shroud of impeller Turn, disk outside diameter is less than impeller outer diameter, its geometric center of the deviation of gravity center of disk, and disc centre is provided with an elliptical hole, weight The heart and transverse are on the same line.Disk synchronous rotary is driven when impeller rotates, disk produces centrifugation due to mass eccentricity Power, the radial load that impeller produces when balancing pump operation by the centrifugal force of disk.By numerical simulation and test determine that disk is not installed Procedure of Single-channel Pump radial load, change the size of centrifugal force by adjusting the radial position of disk center of gravity during installation, adjust disk Circumferential position makes centrifugation force direction from radial direction force direction on the contrary, the disk of same size can balance different radial loads, Neng Goushi Answer the single blade impeller of different size.
The invention has the advantages that：Single blade impeller is had ellipse using one of big cornerite high twist blade formation The runner of circle cross section, significantly improves the handling capacity of impeller, has been really achieved being required without blocking for pump operation；Cover after the impeller Plate setting-up eccentricity disk, balances radial load caused by pump operation, improves the operation stability and reliability of pump, off-centre operation Disk center of gravity can be adjusted conveniently, and a kind of disk of specification can be applied to the Procedure of Single-channel Pump impeller of different series, reduce processing technology It is required that it is suitable for mass production, reduce production cost.
Brief description of the drawings
Fig. 1 is the structure chart of the present invention, and (a) is the sectional view of Procedure of Single-channel Pump impeller, and (b) is the vertical view of Procedure of Single-channel Pump impeller Figure.
Fig. 2 is Procedure of Single-channel Pump impeller graphics.
Fig. 3 is Procedure of Single-channel Pump impeller blade graphics.
Fig. 4 is eccentric disc graphics.
In Fig. 1,1. front shrouds, 2. blades, 3. back shrouds, 4. eccentric discs, r is eccentric disc gravity center eccentric radius, and D is Eccentric disc outside diameter, D2For impeller outer diameter, R1For hub outside diameter, a is ellipse short shaft, and b is transverse, wherein (D2-D)>(b- 2R1)。
In Fig. 3,11. vane inlets, 12. blade exits.
Embodiment
Technical scheme is described in further detail below in conjunction with the accompanying drawings.
In Fig. 1, balanced radial force disk is an eccentric disc, and eccentric disc 4 is connected by screw with impeller, impeller rotation When drive disk synchronous rotary, the center of gravity radial position of eccentric disc can adjust in the range of (r- (b/2-R1), r+ (b/2-R1)) It is whole, therefore the centrifugal force of same disk can change in the range of (m ω 2 [r- (b/2-R1)], m ω 2 [r+ (b/2-R1)]), pass through Numerical simulation and test determine the radial load F of Procedure of Single-channel Pump, according to the size of radial load F, the size of eccentric disc are determined, with full Sufficient m ω 2 [r- (b/2-R1)] ＜ F ＜ m ω 2 [r+ (b/2-R1)].By adjusting the circumferential position of eccentric disc center of gravity during installation Change the direction of centrifugal force, make centrifugation force direction with radial direction force direction on the contrary, to reach the effect of balance impeller radial load.Due to Radial load size can adjust, and same size eccentric disc can be adapted to different Procedure of Single-channel Pump impellers, suitable for mass production.
Wherein：M is the quality of impeller, and ω is the angular speed of impeller, and unit is radian per second, and r is eccentric disc gravity center eccentric Radius, D are eccentric disc outside diameter, and D2 is impeller outer diameter, and R1 is hub outside diameter, and b is transverse, wherein (D2-D) ＞ (b- 2R1)。
In Fig. 3, blade is gradually transitions 12 evagination of blade exit by 11 convex of import, and envelope forms a single runner, Each flow section of runner is ellipse, it is ensured that impeller has very strong handling capacity, to ensure impeller acting ability, vane inlet The cornerite of 11 to blade exit 12 is 320 °~420 °.

Claims (2)

  1. , should 1. a kind of Procedure of Single-channel Pump impeller with balanced radial force disk, is made of front shroud, blade, back shroud, eccentric disc Impeller is double shrouded wheel, its balanced radial force disk is an eccentric disc；Eccentric disc is connected by screw with impeller, impeller rotation Eccentric disc synchronous rotary is driven when turning；It is characterized in that：Impeller forms a runner, leaf by one piece big cornerite high twist blade Between wheel cornerite is 320 °~420 °, blade is gradually transitions outlet portion evagination, each overcurrent of runner by inlet part blade indent Section is ellipse；
    The eccentric disc of Procedure of Single-channel Pump is arranged at back shroud of impeller rear, and eccentric disc outside diameter is less than impeller outer diameter, eccentric disc Deviation of gravity center its geometric center, eccentric disc center is provided with an elliptical hole, center of gravity with transverse on the same line, The radially, circumferentially position of eccentric disc center of gravity is adjustable during installation；By adjusting eccentric disc center of gravity radial position change from The size of mental and physical efforts, changes centrifugation force direction by adjusting circumferential position.
  2. A kind of 2. Procedure of Single-channel Pump impeller with balanced radial force disk as claimed in claim 1, it is characterised in that：Eccentric disc Center of gravity radial position can be in r- (b/2-R1)~r+ (b/2-R1) in the range of adjust, therefore the centrifugal force of same disk can be in m ω2[r-(b/2-R1)]~m ω2[r+(b/2-R1)] in the range of change, pass through numerical simulation and test determine Procedure of Single-channel Pump footpath To power F, according to the size of radial load F, the size of eccentric disc is determined, to meet m ω2[r-(b/2-R1)]<F<mω2[r+(b/ 2-R1)]；Wherein：M is the quality of impeller, and ω is the angular speed of impeller, and r is eccentric disc gravity center eccentric radius, and D is off-centre operation Dish external diameter, D2For impeller outer diameter, R1For hub outside diameter, b is transverse；Wherein (D2-D)>(b-2R1)。
CN201610047592.1A 2016-01-25 2016-01-25 A kind of Procedure of Single-channel Pump impeller with balanced radial force disk Expired - Fee Related CN105570185B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106089732A (en) * 2016-07-25 2016-11-09 安徽汇隆给水设备有限公司 A kind of pipeline dredge pump
CN112483461B (en) * 2020-10-21 2022-07-22 南通大学 Self-balancing method for radial force of single-blade centrifugal pump
CN113578554B (en) * 2021-09-06 2022-09-06 江苏龙鑫智能干燥科技有限公司 Wear-resisting centrifugal atomizing disk with self-balancing function

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US1754992A (en) * 1926-12-06 1930-04-15 American Well Works Centrifugal pump
US2741992A (en) * 1950-04-10 1956-04-17 Fairbanks Morse & Co Bladeless impeller balance means
GB2254891A (en) * 1991-03-26 1992-10-21 Biwater Pumps Limited Single vane impeller.
CN2123629U (en) * 1992-05-30 1992-12-02 浙江省杭电设计研究院 Load balance device for single passage pump
CN102734232A (en) * 2012-06-29 2012-10-17 江苏国泉泵业制造有限公司 Method for eliminating unbalanced force of single-blade pump impeller
CN104061189A (en) * 2014-05-29 2014-09-24 江苏大学 Single flow channel centrifugal pump capable of balancing radial force automatically
CN104632695A (en) * 2015-01-09 2015-05-20 江苏大学 Single-vane pump impeller capable of relieving fluid induced vibration

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JP3742479B2 (en) * 1997-02-27 2006-02-01 株式会社鶴見製作所 Bladeless impeller for submersible pump
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US1754992A (en) * 1926-12-06 1930-04-15 American Well Works Centrifugal pump
US2741992A (en) * 1950-04-10 1956-04-17 Fairbanks Morse & Co Bladeless impeller balance means
GB2254891A (en) * 1991-03-26 1992-10-21 Biwater Pumps Limited Single vane impeller.
CN2123629U (en) * 1992-05-30 1992-12-02 浙江省杭电设计研究院 Load balance device for single passage pump
CN102734232A (en) * 2012-06-29 2012-10-17 江苏国泉泵业制造有限公司 Method for eliminating unbalanced force of single-blade pump impeller
CN104061189A (en) * 2014-05-29 2014-09-24 江苏大学 Single flow channel centrifugal pump capable of balancing radial force automatically
CN104632695A (en) * 2015-01-09 2015-05-20 江苏大学 Single-vane pump impeller capable of relieving fluid induced vibration

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Granted publication date: 20180511

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