CN112360747B - Centrifugal pump with adjustable online lift - Google Patents
Centrifugal pump with adjustable online lift Download PDFInfo
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- CN112360747B CN112360747B CN202011258860.7A CN202011258860A CN112360747B CN 112360747 B CN112360747 B CN 112360747B CN 202011258860 A CN202011258860 A CN 202011258860A CN 112360747 B CN112360747 B CN 112360747B
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- shell
- telescopic
- main shaft
- pump
- centrifugal pump
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- 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
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- 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
- F04D15/0055—Rotors with adjustable blades
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- 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
- F04D29/2222—Construction and assembly
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of water pump equipment, and provides an online lift-adjustable centrifugal pump which comprises a pump shell with an inlet and an outlet, a main shaft rotatably arranged in the pump shell, and an impeller arranged on the main shaft, wherein a telescopic shell and a wheel diameter adjusting mechanism are additionally arranged in the pump shell, the impeller is arranged in the telescopic shell, the impeller comprises fixed blades and telescopic blades, the telescopic blades are slidably arranged on the fixed blades, the wheel diameter adjusting mechanism comprises an adjusting disc and a driving device, the driving device drives the adjusting disc to rotate, a groove which is radially outwards dispersed is formed in the adjusting disc, and a boss which extends into the groove is formed in the telescopic blades. Through above-mentioned technical scheme, the problem of centrifugal pump automatically regulated difficulty among the prior art has been solved.
Description
Technical Field
The invention relates to the technical field of water pump equipment, in particular to a centrifugal pump with an adjustable online lift.
Background
Along with the change of ambient temperature or production load, the condition that the required flow of production and pressure need change often appears in industrial and mining enterprises circulating water system, and in the face of this condition, traditional centrifugal pump has been unable to adapt to changeable condition because the lift flow of traditional centrifugal pump is all fixed.
The parameter adjustment in the operation process of the centrifugal water pump is always the key problem of the operation of the water pump. In the past, methods such as valve regulation and motor speed regulation (including speed reducer regulation, coupler speed regulation, viscous coupling speed regulation, motor magnetic pole logarithm speed regulation, motor voltage reduction speed regulation, motor inner feed speed regulation and the like) are respectively adopted, but the energy consumption of the valve regulation method in the methods is too large, and the motor speed regulation method has the defects of large occupied area, high cost, high failure rate and the like. Based on the above problems, there is a need for a centrifugal pump with an on-line adjustable lift.
Disclosure of Invention
The invention provides a centrifugal pump with an adjustable online lift, which solves the problem that the centrifugal pump in the prior art is difficult to automatically adjust.
The technical scheme of the invention is as follows:
an online lift-adjustable centrifugal pump comprises a pump shell with an inlet and an outlet, a main shaft rotatably arranged in the pump shell, an impeller arranged on the main shaft, a telescopic shell and a wheel diameter adjusting mechanism which are additionally arranged in the pump shell, wherein the impeller is arranged in the telescopic shell and comprises fixed blades and telescopic blades, the telescopic blades are slidably arranged on the fixed blades, the wheel diameter adjusting mechanism comprises an adjusting disc and a driving device, the driving device drives the adjusting disc to rotate, grooves which are radially outwards dispersed are arranged on the adjusting disc, and bosses which are extended into the grooves are arranged on the telescopic blades.
The flexible shell is established including the cover epaxial fixed ring, housing element and elastic connection portion, the equidistant setting of housing element circumference, it is adjacent the housing element radial with fixed ring all with the help of elastic connection portion connects, the fixed ring the housing element elastic connection portion reaches the main shaft forms sealed cavity.
The inner side of the pump shell is provided with a dovetail groove along the radial direction, the outer side of the shell unit is provided with a dovetail platform matched with the dovetail groove in the dovetail groove, one end of the limiting rope is connected with one side, close to the main shaft, of the pump shell, and the other end of the limiting rope is connected with one end, far away from the main shaft, of the shell unit.
The boss is arranged on one side of the telescopic blade close to the main shaft, and the groove is a curved groove which is radially and outwards diverged.
The driving device comprises a sleeve, a transmission assembly and an adjusting motor, the sleeve is sleeved on the main shaft, one end of the sleeve is connected with the adjusting disc, the other end of the sleeve is connected with the transmission assembly, and the adjusting motor drives the sleeve to rotate by means of the transmission assembly.
The transmission assembly comprises a driving gear and a driven gear, the driving gear is connected with the output end of the adjusting motor, the driven gear is connected with the sleeve, and the driving gear is an incomplete gear.
The driving gear is provided with a gear part and abdicating notches, and the gear part and the abdicating notches are four in number and alternately distributed at equal intervals.
A hose is additionally arranged, and the inlet and the outlet of the pump shell are communicated with the telescopic shell through the hose.
The working principle and the beneficial effects of the invention are as follows:
the invention provides an online lift-adjustable centrifugal pump which is structurally characterized in that a telescopic shell is arranged in a pump shell, a main shaft is used for driving an impeller to rotate, the impeller is of a split structure, fixed blades are arranged on the main shaft, telescopic blades are arranged on the fixed blades in a sliding mode, a wheel diameter adjusting mechanism is additionally arranged, the position of the telescopic blades is adjusted, and therefore the radius of the impeller is changed; in the working process, the driving device drives the adjusting disc to rotate, the groove on the adjusting disc forms the wheel diameter of the boss to move and gradually expands from inside to outside, so that the adjusting disc drives the telescopic blades to stretch and contract, the telescopic blades slide, the telescopic shell is jacked open, a sealed centrifugal cavity is formed between the telescopic shell and the impeller, and the effect of adjusting the lift and the flow of the centrifugal pump is achieved; compared with the prior art, the centrifugal pump is small in size, can achieve on-line adjustment of the lift and the flow, meanwhile can control the change of the lift and the flow in real time according to different time periods of different occasions, provides the most appropriate flow and range for the working condition environment, achieves the maximum efficiency of resource utilization, avoids waste, reduces the cost, improves the efficiency, and solves the problem that the centrifugal pump is difficult to adjust automatically in the prior art.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is an isometric view of a structure of the present invention;
FIG. 2 is a front view of the structure of the present invention;
FIG. 3 is a cross-sectional view taken along A-A of FIG. 2;
FIG. 4 is a side view of the structure of the present invention;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is a cross-sectional view taken along the line C-C of FIG. 4;
FIG. 7 is a schematic view of the housing structure of the present invention;
FIG. 8 is a first dovetail connection structure of the present invention;
FIG. 9 is a second dovetail connection structure of the present invention;
in the figure: 1. pump case, 2, main shaft, 3, impeller, 4, flexible shell, 5, fixed blade, 6, flexible blade, 7, adjustment disk, 8, slot, 9, boss, 10, fixed ring, 11, shell unit, 12, elastic connecting part, 13, dovetail groove, 14, dovetail platform, 15, sleeve, 16, adjustment motor, 17, driving gear, 18, driven gear, 19, gear portion, 20, abdication gap, 21, hose, 22, spacing rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any inventive step, are intended to be within the scope of the present invention.
As shown in fig. 1 to 9, this embodiment provides an online lift-adjustable centrifugal pump, which includes a pump casing 1 having an inlet and an outlet, a main shaft 2 rotatably disposed in the pump casing 1, and an impeller 3 disposed on the main shaft 2, wherein a telescopic casing 4 and a wheel diameter adjusting mechanism are additionally disposed in the pump casing 1, the impeller 3 is disposed in the telescopic casing 4, the impeller 3 includes a fixed blade 5 and a telescopic blade 6, the telescopic blade 6 is slidably disposed on the fixed blade 5, the wheel diameter adjusting mechanism includes an adjusting disk 7 and a driving device, the driving device drives the adjusting disk 7 to rotate, the adjusting disk 7 is provided with a radially outwardly diverging groove 8, and the telescopic blade 6 is provided with a boss 9 extending into the groove 8.
In the embodiment, an online lift-adjustable centrifugal pump is provided, and the structure of the online lift-adjustable centrifugal pump is that a telescopic shell 4 is arranged in a pump shell 1, a main shaft 2 is used for driving an impeller 3 to rotate, the impeller 3 is of a split structure, a fixed blade 5 is installed on the main shaft 2, a telescopic blade 6 is arranged on the fixed blade 5 in a sliding manner, a wheel diameter adjusting mechanism is additionally arranged for adjusting the position of the telescopic blade 6, so that the radius of the impeller 3 is changed, a driving device is used for driving an adjusting disc 7 for the wheel diameter adjusting device, a groove 8 which is diverged from inside to outside is formed in the adjusting disc 7, and a boss 9 on the telescopic blade 6 extends into the groove 8; in the working process, the driving device drives the adjusting disc 7 to rotate, the groove 8 on the adjusting disc 7 forms the wheel diameter of the boss 9 to move, and the wheel diameter is gradually expanded from inside to outside, so that the adjusting disc drives the telescopic blades 6 to stretch and contract, the telescopic blades 6 slide, the telescopic shell 4 is jacked open, a sealed centrifugal cavity is formed between the telescopic shell 4 and the impeller 3, and the effect of adjusting the lift and the flow of the centrifugal pump is achieved; compared with the prior art, the centrifugal pump disclosed by the invention is small in size, can realize the on-line adjustment of the lift and the flow, and meanwhile, the change of the lift and the flow can be controlled in real time according to different time periods of different occasions, so that the most appropriate flow and range are provided for the working condition environment, the resource utilization of the maximum efficiency is realized, the waste is avoided, the cost is reduced, the efficiency is improved, and the problem that the centrifugal pump is difficult to automatically adjust in the prior art is solved.
The telescopic shell 4 comprises a fixed ring 10, a shell unit 11 and an elastic connecting portion 12, the fixed ring, the shell unit 11 and the elastic connecting portion are sleeved on the main shaft 2, the circumferences of the shell units 11 are arranged at equal intervals, the adjacent shell units 11 and the shell units 11 are radially connected with the fixed ring 10 through the elastic connecting portion 12, and the fixed ring 10, the shell units 11, the elastic connecting portion 12 and the main shaft 2 form a sealed cavity.
In this embodiment, the telescopic shell 4 is composed of a fixed ring 10, a shell unit 11 and an elastic connection portion 12, the three parts and the main shaft 2 form a sealed cavity, an O-ring is used for sealing between the fixed ring 10 and the main shaft 2, the elastic connection portion 12 can be a corrugated plate or a rubber elastic plate, the fixed ring 10 is sleeved on the main shaft 2, the shell units 11 are circumferentially distributed around the fixed ring 10 at equal intervals, the elastic connection portion 12 radially connects the fixed ring 10 and the shell unit 11, and the adjacent shell units 11 are circumferentially connected by the elastic connection portion 12, so that during the working process, when the blades are telescopic, the object can realize radial change, and simultaneously, as the radius is gradually increased, the circumferential direction is also gradually increased, so as to adapt to the change of impellers 3 with different diameters, the telescopic shell 4 can also ensure the inside of the telescopic shell 4 and the impellers 3 under the action of the elastic connection portion 12, a centrifugal cavity is formed, thereby realizing the work of the centrifugal pump.
The inner side of the pump shell 1 is provided with a radial dovetail groove 13, the outer side of the shell unit 11 is provided with a dovetail platform 14 matched with the inside of the dovetail groove 13, one end of the limiting rope 22 is connected with one side of the pump shell 1 close to the main shaft 2, and the other end of the limiting rope is connected with one end of the shell unit 11 far away from the main shaft 2.
In this embodiment, a dovetail groove 13 is provided in the pump case 1, a dovetail platform 14 matched with the dovetail groove 13 is provided on the outer surface of the casing unit 11, so that the casing unit 11 can realize telescopic change under the action of the impeller 3, and meanwhile, in the rotating process of the impeller 3, the dovetail platform 14 is fixed in the dovetail groove 13, so that the effect that the impeller 3 rotates and the telescopic shell 4 is fixed can be realized, and the stability of the telescopic shell 4 is improved, in addition, limiting ropes 22 are additionally arranged on two sides of the dovetail platform 14, the limiting ropes 22 can be steel wire ropes or high-strength soft rope bodies, the limiting ropes 22 can limit the maximum sliding range of the casing unit 11, thereby avoiding damage caused by excessive pressure, and further improving the safety of the equipment.
The boss 9 is arranged on one side of the telescopic blade 6 close to the main shaft 2, and the groove 8 is a curved groove which is radially and outwardly divergent.
In this embodiment, the boss 9 is disposed on one side of the retractable blade 6 close to the main shaft 2, and the groove 8 is a curved groove which is radially outwardly divergent, so that the position of the boss 9 is close to the inner side in the working process, the stroke of the retractable blade 6 is increased, the lift adjusting range of the centrifugal pump is enlarged, and in addition, the curved groove 8 enables the adjusting process to be smoother.
Drive arrangement includes sleeve 15, drive assembly and adjusting motor 16, sleeve 15 cover is established on main shaft 2, sleeve 15 one end with adjusting disk 7 is connected, and the other end is connected with drive assembly, adjusting motor 16 drives with the help of drive assembly sleeve 15 rotates.
In this embodiment, drive arrangement comprises sleeve 15, adjusting motor 16 and drive assembly, and adjusting motor 16 drives drive assembly, drives sleeve 15 and rotates, and sleeve 15 cover is established on main shaft 2, and the one end of sleeve 15 is connected with adjustment disk 7, and sleeve 15 drives adjustment disk 7 and rotates to realize the external input of adjustment power, the working chamber of centrifugal pump is separately independent with the adjustment, has promoted the independent stability of centrifugal pump, reduces the fault rate.
The transmission assembly comprises a driving gear 17 and a driven gear 18, the driving gear 17 is connected with the output end of the adjusting motor 16, the driven gear 18 is connected with the sleeve 15, and the driving gear 17 is an incomplete gear.
In this embodiment, the transmission assembly is composed of driving gear 17 and driven gear 18 meshing, driving gear 17 is connected with the output of adjustment motor 16, driven gear 18 then is connected with sleeve 15, driving gear 17 is incomplete gear, so can realize, when needing the regulating wheel footpath, driving gear 17 can drive driven gear 18 and rotate, when needing centrifugal pump work, when outwards exporting, adjustment disk 7 rotates along with main shaft 2, driven gear 18 also can rotate this moment, driven gear 18 then disengages with driving gear 17, driving gear 17 can not influence driven gear 18's rotation, mutual independence.
The driving gear 17 is provided with four gear portions 19 and four abdicating notches 20, and the gear portions 19 and the abdicating notches 20 are alternately distributed at equal intervals.
In this embodiment, the driving gear 17 divide into gear portion 19 and the breach of stepping down 20, and gear portion 19 meshes with driven gear 18, and the breach of stepping down 20 then plays the effect of stepping down when centrifugal pump work, realizes the mutual independence of work and regulation, and each other does not influence, and breach of stepping down 20 and gear portion 19 respectively set up to 4, and the symmetry sets up to reach high-efficient the regulation.
A hose 21 is additionally arranged, and the inlet and the outlet of the pump shell 1 are communicated with the telescopic shell 4 through the hose 21.
In this embodiment, adopt hose 21 to be connected between pump case 1 and the flexible shell 4, at the flexible in-process of flexible shell 4, still can guarantee flexible shell 4 and external intercommunication, promoted the security of equipment.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An on-line lift-adjustable centrifugal pump comprises a pump shell (1) with an inlet and an outlet, a main shaft (2) rotatably arranged in the pump shell (1) and an impeller (3) arranged on the main shaft (2), it is characterized in that a telescopic shell (4) and a wheel diameter adjusting mechanism which are arranged in the pump shell (1) are additionally arranged, the impeller (3) is arranged in the telescopic shell (4), the impeller (3) comprises fixed blades (5) and telescopic blades (6), the telescopic blades (6) are arranged on the fixed blades (5) in a sliding manner, the wheel diameter adjusting mechanism comprises an adjusting disc (7) and a driving device, the driving device drives the adjusting disc (7) to rotate, the adjusting disc (7) is provided with a groove (8) which is radially and outwardly diverged, the telescopic blades (6) are provided with bosses (9) extending into the grooves (8).
2. The centrifugal pump with the adjustable online lift as recited in claim 1, wherein the telescopic shell (4) comprises a fixed ring (10), shell units (11) and elastic connecting portions (12) which are sleeved on the main shaft (2), the shell units (11) are circumferentially arranged at equal intervals, the adjacent shell units (11) and shell units (11) are radially connected with the fixed ring (10) by means of the elastic connecting portions (12), and the fixed ring (10), shell units (11), elastic connecting portions (12) and main shaft (2) form a sealed cavity.
3. The centrifugal pump with the online adjustable lift as claimed in claim 2, wherein a radial dovetail groove (13) is arranged on the inner side of the pump shell (1), a dovetail platform (14) matched with the inside of the dovetail groove (13) is arranged on the outer side of the shell unit (11), a limiting rope (22) is additionally arranged, one end of the limiting rope (22) is connected with one side of the pump shell (1) close to the main shaft (2), and the other end of the limiting rope is connected with one end of the shell unit (11) far away from the main shaft (2).
4. An on-line head adjustable centrifugal pump according to claim 1, characterized in that the boss (9) is provided on the side of the expansion blade (6) close to the main shaft (2), and the groove (8) is a curved groove that diverges radially outward.
5. The centrifugal pump with the adjustable online lift as recited in claim 1 or 4, characterized in that the driving device comprises a sleeve (15), a transmission assembly and an adjusting motor (16), the sleeve (15) is sleeved on the main shaft (2), one end of the sleeve (15) is connected with the adjusting disk (7), the other end is connected with the transmission assembly, and the adjusting motor (16) drives the sleeve (15) to rotate by means of the transmission assembly.
6. The centrifugal pump with adjustable on-line head as claimed in claim 5, wherein the transmission assembly comprises a driving gear (17) and a driven gear (18), the driving gear (17) is connected with the output end of the adjusting motor (16), the driven gear (18) is connected with the sleeve (15), and the driving gear (17) is an incomplete gear.
7. The centrifugal pump with the adjustable online lift as recited in claim 6, characterized in that the driving gear (17) is provided with four gear portions (19) and four abdicating notches (20), and the gear portions (19) and the abdicating notches (20) are alternately distributed at equal intervals.
8. The centrifugal pump with adjustable on-line lift according to claim 3, characterized in that a hose (21) is added, and the inlet and outlet of the pump housing (1) are communicated with the telescopic housing (4) through the hose (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258860.7A CN112360747B (en) | 2020-11-12 | 2020-11-12 | Centrifugal pump with adjustable online lift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011258860.7A CN112360747B (en) | 2020-11-12 | 2020-11-12 | Centrifugal pump with adjustable online lift |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112360747A CN112360747A (en) | 2021-02-12 |
| CN112360747B true CN112360747B (en) | 2022-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011258860.7A Active CN112360747B (en) | 2020-11-12 | 2020-11-12 | Centrifugal pump with adjustable online lift |
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| Country | Link |
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| CN (1) | CN112360747B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118088468A (en) * | 2024-04-18 | 2024-05-28 | 江苏新凯晟机械设备有限公司 | Adjustable guide vane type centrifugal air compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3231313A (en) * | 1963-07-12 | 1966-01-25 | Svenska Flaektfabriken Ab | Axial fan with adjustable blades |
| CN2033070U (en) * | 1988-06-08 | 1989-02-22 | 梁术华 | Flexible blade centrifugal impeller |
| CN102606532A (en) * | 2012-03-20 | 2012-07-25 | 江苏恒丰新流体节能设备科技有限公司 | Fluid pump and method for adjusting optimal efficiency point thereof |
| CN103835988A (en) * | 2014-03-11 | 2014-06-04 | 门立山 | Centrifugal pump impeller |
| CN111577608A (en) * | 2020-05-23 | 2020-08-25 | 宁波真格液压科技有限公司 | Centrifugal pump |
-
2020
- 2020-11-12 CN CN202011258860.7A patent/CN112360747B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3231313A (en) * | 1963-07-12 | 1966-01-25 | Svenska Flaektfabriken Ab | Axial fan with adjustable blades |
| CN2033070U (en) * | 1988-06-08 | 1989-02-22 | 梁术华 | Flexible blade centrifugal impeller |
| CN102606532A (en) * | 2012-03-20 | 2012-07-25 | 江苏恒丰新流体节能设备科技有限公司 | Fluid pump and method for adjusting optimal efficiency point thereof |
| CN103835988A (en) * | 2014-03-11 | 2014-06-04 | 门立山 | Centrifugal pump impeller |
| CN111577608A (en) * | 2020-05-23 | 2020-08-25 | 宁波真格液压科技有限公司 | Centrifugal pump |
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| CN112360747A (en) | 2021-02-12 |
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Effective date of registration: 20230301 Address after: 050000 No. 2, Hongda Road, Duan Village, Machun Township, Shijiazhuang Equipment Manufacturing Base, Yuanshi County, Shijiazhuang City, Hebei Province (Yuanshi District) Patentee after: Shijiazhuang Shiyi Pump Manufacturing Co.,Ltd. Address before: 050000 Tashan village xishunda Road, Qiaoxi District, Shijiazhuang City, Hebei Province Patentee before: Shijiazhuang Shiyi Pump Co.,Ltd. |