CN106122030A - A kind of rated lift type variable horizontal type multi-stage pump - Google Patents
A kind of rated lift type variable horizontal type multi-stage pump Download PDFInfo
- Publication number
- CN106122030A CN106122030A CN201610476391.3A CN201610476391A CN106122030A CN 106122030 A CN106122030 A CN 106122030A CN 201610476391 A CN201610476391 A CN 201610476391A CN 106122030 A CN106122030 A CN 106122030A
- Authority
- CN
- China
- Prior art keywords
- impeller
- stage
- pump
- exit end
- water
- 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.)
- Pending
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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
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage 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
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0088—Testing machines
-
- 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
- F04D29/02—Selection of particular materials
- F04D29/026—Selection of particular materials 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
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/22—Rotors specially for centrifugal pumps
- F04D29/2205—Conventional flow pattern
- F04D29/2216—Shape, geometry
-
- 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
Abstract
The invention discloses a kind of rated lift type variable horizontal type multi-stage pump, including the pump housing, the pump housing includes being sequentially connected logical inlet segment, water exit end, the multiple stage casings being located between inlet segment and water exit end and tail-hood composition, suction casing is provided with suction inlet, the section of pumping out is provided with discharge opening, suction inlet and discharge opening are arranged the most upward, on pump shaft in multisection type pump housing inner chamber, multiple impeller is installed, impeller includes the first stage impeller being arranged close on the pump shaft of inlet segment, with the some secondary impeller after first stage impeller, the water exit end side of the pump housing is provided with bascule, each middle intrasegmental part is equipped with an impeller, the hop count in pump housing stage casing is variable, reserved multiple impeller installation sites on pump shaft, the external diameter of rear stage impeller is more than the impeller outer diameter of previous stage impeller, then the hub diameter of one stage impeller is equal to the hub diameter of previous stage impeller.The design discharge of present invention impeller at different levels is identical, and rated lift is different, it is ensured that impellers at different levels can be simultaneously in optimum condition, improves efficiency.
Description
Technical field
The invention belongs to fluid pump technical field, be specifically related to a kind of rated lift type variable horizontal type multi-stage pump.
Background technology
Horizontal multi-stage centrifugal pump has that performance range is wide, noise is low, life-span length, the feature such as convenient to install and maintain, for conveying
Clear water or physicochemical properties are similar to other liquid of water, be primarily adapted for use in urban skyscraper plumbing and fire demand water,
Power plant, factory, mine plumbing, remote water delivery, production technology circulation use water, HVAC circulation, domestic water etc. many
Plant purposes.
But existing horizontal multi-stage centrifugal pump intake performance is poor, the centrifugal multistage pump multiple centrifugal pump that axial force is relatively big, the most conventional
The parameters such as impeller flow lifts at different levels are consistent, but the flow losses difference caused due to flow velocity differences at different levels, cause leaf at different levels
Wheel can not be simultaneously in optimal working point, and then efficiency reduces.
Summary of the invention
The technical problem to be solved in the present invention is that existing horizontal multi-stage centrifugal pump intake performance is poor, and axial force is relatively big,
The parameters such as the most conventional centrifugal multistage pump multiple centrifugal pump impeller at different levels flow lift are consistent, but the flowing caused due to flow velocity differences at different levels
Loss difference, causes impeller at different levels can not be simultaneously in optimal working point, and then efficiency reduces, for solving the problems referred to above, this
Invention provides a kind of rated lift type variable horizontal type multi-stage pump.
It is an object of the invention to realize in the following manner:
A kind of rated lift type variable horizontal type multi-stage pump, including the pump housing, is provided with pump shaft in the pump housing, the two ends of pump shaft are respectively mounted
On water inlet end bearing and water side bearing, pump shaft is connected end and is provided with shaft coupling with motor output shaft, and the pump housing includes phase successively
The inlet segment of connection, water exit end, the multiple stage casings being located between inlet segment and water exit end and tail-hood composition, pump shaft is arranged in into water
In section, stage casing, water exit end and tail-hood, suction casing is provided with suction inlet, and the section of pumping out is provided with discharge opening, suction inlet and discharge opening the most upward
Arranging, the pump shaft in multisection type pump housing inner chamber is provided with multiple impeller, impeller includes being arranged close on the pump shaft of inlet segment
First stage impeller, and some secondary impeller that first stage impeller is below, the water exit end side of the pump housing is provided with bascule, Mei Gezhong
Intrasegmental part is equipped with an impeller, and the hop count in pump housing stage casing is variable, reserved multiple impeller installation sites, rear stage impeller on pump shaft
External diameter more than the impeller outer diameter of previous stage impeller, then the hub diameter of one stage impeller is straight equal to the wheel hub of previous stage impeller
Footpath.
On the pump shaft of first stage impeller, inducer is installed in described inlet segment.
Described inducer uses the blade of limit pitch form, deviated splitter vane interval to arrange, and the pitch in inducer exit is
1.52-1.87 times of inducer import department pitch.
Described bascule includes balancing frame, balance plate, balancing frame grommet, balance set and balancing pipeline, and balancing frame is pacified
Being contained on the pump shaft of water exit end, balance plate is arranged on water exit end, and balancing frame grommet is arranged between balancing frame and balance plate, flat
Weighing apparatus set is arranged on the inner ring of water exit end, and balancing pipeline is arranged on outside the pump housing, connects inlet segment and water exit end.
The contact surface of described balancing frame grommet and balancing frame and balance plate is by built-up welding two-layer RCoCr hard alloy layer, RCoCr
Hard alloy layer thickness is 3.5-5.5mm.
Each impeller is equipped with stator near water exit end side, and stator is fixed on pump shaft, the external diameter of rear stage stator with
The ratio A of previous stage stator external diameter is equal to the impeller outer diameter being close to this rear stage stator impeller outer diameter with this previous stage stator
Ratio B.
Also including water inlet end measuring temperature of bearing alarm device, its temperature sensor is positioned at sliding bearing body or corresponding water inlet end
In the bearing gland of bearing.
Install an inducer additional in the first stage impeller front end of pump, be similar to increase an axial wheel, with pump shaft during work
Rotate together, the inducer fluid acting to flowing through herein so that it is enter first stage impeller after supercharging, reduce more than required cavitation
Amount, improves the anti-cavitation performance of pump, reduces the rate of breakdown that centrifugal pump causes because of cavitation；Simultaneously by liquid produced
Pre-whirlpool, reduces the obstruction of fluid, improves the efficiency of pump.
Relative to prior art, the invention has the beneficial effects as follows: the design discharge of impellers at different levels is identical, rated lift is not
With, it is ensured that impellers at different levels can be simultaneously in optimum condition, improves efficiency；Simple in construction, easily manufactures and maintenance, greatly
Improve sealing property and the service life of blade, strengthen bearing service life, reduce work noise, secure mechanical base, peace
Overall height is imitated.By arranging bascule, reduce axial force, improve the intake performance of centrifugal pump.
Accompanying drawing explanation
Fig. 1 is the sectional view of the present invention.
Wherein, 1 is pump shaft；2 is shaft coupling；3 is sleeve nut；4 is water inlet end bearing；5 is positioning and locking device；6 are
The body of sliding bearing；7 is puller bolt；8 is bearing body positioning sleeve；9 is cooling tube；10 is flush pipe；11 is inlet segment；12 is row
Air valve；13 is stage casing；14 is impeller；15 is stator；16 is water exit end；17 is bascule；1701 is balancing pipeline；1702 are
Balancing frame；1703 is balancing frame grommet；1704 is balance plate；1705 is balance set；18 is tail-hood；19 is mechanical seal；20 are
Bearing bracket stand；21 is outer press cover；22 is water side bearing；23 is bearing interstage sleeve；24 is mechanical seal cover；25 is mechanical seal
Set；26 is rod；27 is the plug that discharges water；28 is water inlet end measuring temperature of bearing alarm device；29 is cooling water channel；30 is bearing pressure
Lid.
Detailed description of the invention
As shown in Figure 1, a kind of rated lift type variable horizontal type multi-stage pump, including the pump housing, pump shaft 1 is installed in the pump housing,
The two ends of pump shaft 1 are separately mounted on water inlet end bearing 4 and water side bearing 22, and pump shaft 1 is connected end and installs with motor output shaft
Having shaft coupling 2, the pump housing includes being sequentially connected logical inlet segment 11, water exit end 16, is located between inlet segment 11 and water exit end 16
Multiple stage casings 13 and tail-hood 18 form, and pump shaft 1 is arranged in inlet segment 11, stage casing 13, water exit end 16 and tail-hood 18, inlet segment 11
Being provided with suction inlet, water exit end 16 is provided with discharge opening, suction inlet and discharge opening and arranges the most upward, the pump shaft in multisection type pump housing inner chamber
Being provided with multiple impeller 14 on 1, impeller 14 includes the first stage impeller being arranged close on the pump shaft 1 of inlet segment 11, and chopped-off head leaf
Wheel some secondary impeller below, water exit end 16 side of the pump housing is provided with bascule 17, and each middle intrasegmental part is equipped with one
Individual impeller 14, the hop count in pump housing stage casing 13 is variable, and reserved multiple impeller installation sites on pump shaft 1, the external diameter of rear stage impeller is big
In the impeller outer diameter of previous stage impeller, then the hub diameter of one stage impeller is equal to the hub diameter of previous stage impeller.
The external diameter of rear stage impeller is more than the impeller outer diameter of previous stage impeller, and corresponding, the diameter of stator 15 is the most step by step
Increase, output pressure can be improved step by step, improve centrifugal pump lift.
Tail-hood 18 is arranged on water exit end 16 by rod 26, and inlet segment 11 is provided with air bleeding valve 12 and the plug 27 that discharges water,
The air bleeding valve 12 gas in emptying pump body；Owing to the present invention is power plant's mine pump, it is not clarified water pump, therefore in the pump housing
Having solid suspension unavoidably, arranging the plug 27 that discharges water is the solid suspension in order to clear up pump body, due to through impeller 14
Pressurization, pump body is pressure flow body with the liquid of solid suspension, therefore, after the plug 27 that discharges water is opened, hangs with solid
The liquid of float is the ejection of pressure flow body, plays enclosure interior desilting effect.
Water exit end 16 is installed with bearing bracket stand 20 and outer press cover 21, and water side bearing 22 is set in bearing bracket stand 20, water inlet end
Bearing 4 is arranged on the water inlet end of the pump housing, and water inlet end bearing 4 is affixed with pump shaft 1, at pump by bearing gland 30 and sleeve nut 3
Being positioned at equipped with bearing interstage sleeve 23 inside water side bearing 22 on axle 1, water side bearing 22 is solid with pump shaft 1 by bearing interstage sleeve 23
Connect.
It is provided with sealing between pump shaft 1 and inlet segment 11, water exit end 16, as a example by mechanical seal 19, corresponding machine on pump shaft 1
Tool seals the position of 19 and is provided with mechanical seal set 25, is separately installed with mechanical seal cover on inlet segment 11 and tail-hood 18
24。
On the pump shaft 1 of first stage impeller, inducer is installed in described inlet segment 11.
Described inducer uses the blade of limit pitch form, deviated splitter vane interval to arrange, and the pitch in inducer exit is
1.52-1.87 times of inducer import department pitch.
Described bascule 17 include balancing frame 1702, balance plate 1704, balancing frame grommet 1703, balance set 1705 and
Balancing pipeline 1701, balancing frame 1702 is arranged on the pump shaft 1 of water exit end 16, and balance plate 1704 is arranged on water exit end 16, flat
Weighing apparatus dish grommet 1703 is arranged between balancing frame 1702 and balance plate 1704, and balance set 1705 is arranged on the inner ring of water exit end 16
On, balancing pipeline 1701 is arranged on outside the pump housing, connects inlet segment 11 and water exit end 16.
The contact surface of described balancing frame grommet 1703 and balancing frame 1702 and balance plate 1704 is by built-up welding two-layer RCoCr hard
Alloy-layer, RCoCr hard alloy layer thickness is 3.5-5.5mm.
Each impeller is equipped with stator 15 near water exit end 16 side, and stator 15 is fixed on pump shaft 1, rear stage stator
External diameter is equal to the impeller outer diameter of this rear stage stator of next-door neighbour and the impeller of this previous stage stator with the ratio A of previous stage stator external diameter
The ratio B of external diameter.
Also include water inlet end measuring temperature of bearing alarm device 28, measure the temperature of water inlet end bearing 4, its temperature sensor in real time
It is positioned at the body of sliding bearing 6 or the bearing gland 30 of corresponding water inlet end bearing 4.
The present invention is additionally provided with cooling tube 9 and for rinsing the flush pipe 10 of mechanical seal 19, cooling tube 9 and cooling water channel 29
Entrance communicates, and is used for cooling down water inlet end bearing 4.
The outside of water inlet end bearing 4 is provided with the body of sliding bearing 6, and water inlet end bearing 4 is played fixing pressure by the body of sliding bearing 6
Tight effect, the outside of the body of sliding bearing 6 is provided with bearing body positioning sleeve 8, and bearing body positioning sleeve 8 is by axial positioning and locking
Device 5 and puller bolt 7 radially are fixed locking to the body of sliding bearing 6.
After the body of sliding bearing 6 locking, if centrifugal pump operational factor there occurs change, as long as its parameter is in the operating mode of this pump
In the range of change, i.e. change between design point, maximum point and smallest point, produced unnecessary axial force after change, namely
After acting on cancelling out each other on balance plate 1704, balancing frame 1702, remaining residual axial force is undertaken by water inlet end bearing 4.
The work process of the present invention is as follows: before centrifugal pump work, first by hydraulically full in pump, then starts centrifugal pump, lures
Guide wheel, impeller 14 and stator 15 quick rotation, the inducer fluid acting to flowing through herein so that it is enter chopped-off head leaf after supercharging
Wheel, the blade of impeller 14 orders about fluid rotation, relies on inertia to impeller outer edge diffluence during fluid rotation, and impeller 14 is from suction simultaneously
Room inspiration liquid, in this course, the fluid winding flow blade in impeller 14；In streaming motion, fluid matasomatism one lift is in leaf
Sheet, blade acts on fluid with a power equal in magnitude, in opposite direction with this lift in turn, and this power convection cell does work,
Making fluid obtain energy and flow out impeller 14, at this moment the kinetic energy of fluid all increases with pressure energy；Stator 15 is in centrifugal multistage pump multiple centrifugal pump
Energy conversion component, the fluid collection that impeller 14 can be thrown away, make the flow velocity of fluid reduce, partial velocity can be turned
Become pressure energy, then be uniformly introduced next stage impeller 14 or discharge through anemostat.
Centrifugal pump relies on the effect of rotary blade 14 convection cell the mechanical energy of prime mover to be passed to fluid, due to centrifugal pump
Effect, during fluid flows to outlet from impeller 14 import, its speed can and pressure can all be increased, by impeller 14 row
The liquid gone out can be converted into pressure energy through delivery chamber, major part speed, then transfer out along discharge line；Impeller 14 import
Place forms vacuum or low pressure because of the discharge of fluid, and the fluid in priming reservoir, under the effect of liquid level pressure (atmospheric pressure), is pressed
Entering the import of impeller 14, then, the impeller being rotating is continuously drawn into the most continuously and discharges fluid.
Install an inducer additional in the first stage impeller front end of pump, be similar to increase an axial wheel, with pump shaft during work
Rotate together, the inducer fluid acting to flowing through herein so that it is enter first stage impeller after supercharging, reduce more than required cavitation
Amount, improves the anti-cavitation performance of pump, reduces the rate of breakdown that centrifugal pump causes because of cavitation；Simultaneously by liquid produced
Pre-whirlpool, reduces the obstruction of fluid, improves the efficiency of pump.
Relative to prior art, the invention has the beneficial effects as follows: simple in construction, easily manufacture and maintenance, be greatly enhanced
The sealing property of blade and service life, strengthening bearing service life, reduce work noise, secure mechanical base, safety is high
Effect.
Above-described is only the preferred embodiment of the present invention, it is noted that for a person skilled in the art,
Without departing under general idea premise of the present invention, it is also possible to making some changes and improvements, these also should be considered as the present invention's
Protection domain.
Claims (7)
1. a rated lift type variable horizontal type multi-stage pump, including the pump housing, is provided with pump shaft (1), the two ends of pump shaft (1) in the pump housing
Being separately mounted on water inlet end bearing (4) and water side bearing (22), pump shaft (1) is connected end with motor output shaft and is provided with shaft coupling
Device (2), the pump housing include being sequentially connected logical inlet segment (11), water exit end (16), be located at inlet segment (11) and water exit end (16) it
Between multiple stage casings (13) and tail-hood (18) composition, pump shaft (1) be arranged in inlet segment (11), stage casing (13), water exit end (16) and
In tail-hood (18), suction casing (9) is provided with suction inlet, and the section of pumping out (16) is provided with discharge opening, suction inlet and discharge opening and arranges the most upward,
Being provided with multiple impeller (14) on pump shaft (1) in multisection type pump housing inner chamber, impeller (14) includes being arranged close to inlet segment
(11) the first stage impeller on pump shaft (1), and some secondary impeller that first stage impeller is below, water exit end (16) side of the pump housing sets
It is equipped with bascule (17), it is characterised in that: each middle intrasegmental part is equipped with an impeller (14), the hop count of pump housing stage casing (13)
Variable, the upper reserved multiple impeller installation sites of pump shaft (1), the external diameter of rear stage impeller is more than the external diameter of previous stage impeller, then
The hub diameter of one stage impeller is equal to the hub diameter of previous stage impeller.
Rated lift type variable horizontal type multi-stage pump the most according to claim 1, it is characterised in that: in described inlet segment (11)
On the pump shaft (1) of first stage impeller, inducer is installed.
Rated lift type variable horizontal type multi-stage pump the most according to claim 2, it is characterised in that: described inducer uses limit
The blade of pitch form, deviated splitter vane interval is arranged, and the pitch in inducer exit is the 1.52-of inducer import department pitch
1.87 again.
Rated lift type variable horizontal type multi-stage pump the most according to claim 1, it is characterised in that: described bascule (17)
Including balancing frame (1702), balance plate (1704), balancing frame grommet (1703), balance set (1705) and balancing pipeline
(1701), balancing frame (1702) is arranged on the pump shaft (1) of water exit end (16), and balance plate (1704) is arranged on water exit end (16)
On, balancing frame grommet (1703) is arranged between balancing frame (1702) and balance plate (1704), and balance set (1705) is arranged on out
On the inner ring of water section (16), balancing pipeline (1701) is arranged on outside the pump housing, connects inlet segment (11) and water exit end (16).
Rated lift type variable horizontal type multi-stage pump the most according to claim 4, it is characterised in that: described balancing frame grommet
(1703) with the contact surface of balancing frame (1702) and balance plate (1704) by built-up welding two-layer RCoCr hard alloy layer, RCoCr hard
Alloy layer thickness is 3.5-5.5mm.
Rated lift type variable horizontal type multi-stage pump the most according to claim 1, it is characterised in that: each impeller is near water outlet
Section (16) side is equipped with stator (15), and stator (15) is fixed on pump shaft (1), the external diameter of rear stage stator and previous stage stator
The ratio A of external diameter is equal to the ratio B of the impeller outer diameter of the impeller outer diameter with this previous stage stator being close to this rear stage stator.
Rated lift type variable horizontal type multi-stage pump the most according to claim 1, it is characterised in that: also include water inlet end bearing
Temperature measurement and alarm device (28), its temperature sensor is positioned at the body of sliding bearing (6) or the bearing gland of corresponding water inlet end bearing (4)
(30) in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476391.3A CN106122030A (en) | 2016-06-27 | 2016-06-27 | A kind of rated lift type variable horizontal type multi-stage pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610476391.3A CN106122030A (en) | 2016-06-27 | 2016-06-27 | A kind of rated lift type variable horizontal type multi-stage pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106122030A true CN106122030A (en) | 2016-11-16 |
Family
ID=57265590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610476391.3A Pending CN106122030A (en) | 2016-06-27 | 2016-06-27 | A kind of rated lift type variable horizontal type multi-stage pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106122030A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026737A (en) * | 2018-08-02 | 2018-12-18 | 广州市能动机电设备有限公司 | A kind of centrifugal water pump |
| CN111207080A (en) * | 2020-01-22 | 2020-05-29 | 陈科 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
| CN112594191A (en) * | 2020-12-29 | 2021-04-02 | 亿志机械设备(无锡)有限公司 | Small-flow high-lift multistage centrifugal pump |
| CN114294236A (en) * | 2022-01-21 | 2022-04-08 | 浙江南元泵业有限公司 | Variable-lift energy-saving vertical multistage centrifugal pump |
| CN115370581A (en) * | 2022-06-09 | 2022-11-22 | 利欧集团浙江泵业有限公司 | Jet pump |
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| CN203114638U (en) * | 2012-12-28 | 2013-08-07 | 上海连成（集团）有限公司 | Novel sectional multistage pump with inducer |
| CN103291641A (en) * | 2013-05-16 | 2013-09-11 | 安徽三环水泵有限责任公司 | Mining special multistage centrifugal pump |
| CN104728124A (en) * | 2015-04-20 | 2015-06-24 | 杨海霞 | Multi-stage centrifugal pump |
| CN204692167U (en) * | 2015-05-26 | 2015-10-07 | 理昂新能源股份有限公司 | The removable Multi-level water-feeding pump of a kind of impeller |
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| CN2616721Y (en) * | 2003-01-16 | 2004-05-19 | 广西博士通泵业有限责任公司 | Segmental multi-stage centrifugal water pump |
| JP2008095649A (en) * | 2006-10-16 | 2008-04-24 | Hitachi Plant Technologies Ltd | Multistage diffuser pump |
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| CN103104544A (en) * | 2013-03-07 | 2013-05-15 | 江苏大学 | Pitch-varying design method of inducer with long and short blades |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109026737A (en) * | 2018-08-02 | 2018-12-18 | 广州市能动机电设备有限公司 | A kind of centrifugal water pump |
| CN111207080A (en) * | 2020-01-22 | 2020-05-29 | 陈科 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
| CN111207080B (en) * | 2020-01-22 | 2020-12-15 | 乐清市芮易经济信息咨询有限公司 | Chemical pump with shaft-split middle-opening conveniently-disassembled structure |
| CN112594191A (en) * | 2020-12-29 | 2021-04-02 | 亿志机械设备(无锡)有限公司 | Small-flow high-lift multistage centrifugal pump |
| CN114294236A (en) * | 2022-01-21 | 2022-04-08 | 浙江南元泵业有限公司 | Variable-lift energy-saving vertical multistage centrifugal pump |
| CN114294236B (en) * | 2022-01-21 | 2024-01-30 | 浙江南元泵业有限公司 | Variable-lift energy-saving vertical multistage centrifugal pump |
| CN115370581A (en) * | 2022-06-09 | 2022-11-22 | 利欧集团浙江泵业有限公司 | Jet pump |
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Application publication date: 20161116 |