CN107605755A - A kind of impeller built-in mixed flow immersible electric pump - Google Patents
A kind of impeller built-in mixed flow immersible electric pump Download PDFInfo
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- CN107605755A CN107605755A CN201710825317.2A CN201710825317A CN107605755A CN 107605755 A CN107605755 A CN 107605755A CN 201710825317 A CN201710825317 A CN 201710825317A CN 107605755 A CN107605755 A CN 107605755A
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- rotor
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- impeller
- fixed mount
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Abstract
The present invention discloses a kind of impeller built-in mixed flow immersible electric pump, including suction chamber, mixed-flow impeller and diffuser, mixed-flow impeller is fixedly welded on rotor fixed mount, rotor by inner ring positioning be assemblied in rotor fixed mount it is cylindrical on, it is connected with rotor fixed mount with fastener by pressing plate again, so that rotor, rotor fixed mount and mixed-flow impeller composition are integral type rotor；One end of runner bucket is uniformly connected on the inner periphery of the rotor fixed mount, the other end of runner bucket respectively connected impeller hub and form mixed-flow impeller, mixed-flow impeller is located at the inner chamber position of rotor, rotor, rotor fixed mount and mixed-flow impeller is formed an entirety.The present invention is because being integral type rotor by rotor, rotor fixed mount and mixed-flow impeller composition, so that submersible mixed-flow pump configuration is compacter, axial length greatly shortens, unit volume and weight all greatly reduce.
Description
Technical field
The invention belongs to submersible pump technical field, and in particular to a kind of impeller built-in mixed flow immersible electric pump.
Background technology
Generally, the structure of submersible mixed-flow pump is that dry-type submersible motor is coaxially connected with immersible pump, and dry-type submersible motor is placed in
In the outlet passage of submersible mixed-flow pump, water pump vane enters waterside unit.Water pump vane pumps current, by the outer wall of motor
Flow in outlet passage.Adapted dry-type submersible motor is all-sealed structure, and inner chamber is dry air.The diving of this structural shape
Weak point existing for mixed-flow pump：First, submersible motor is submerged in water for a long time, and the sealing of motor is not easy to ensure, particularly exists
When in the deeper water of submergence, the electric insulation of submersible motor can not obtain Reliable guarantee, and dry-type submersible motor has safety
Hidden danger.Secondly water pump vane is cantilever beam structure, i.e., only has a bearing pivot at 300~500mm of side of impeller.It is this
Structural requirement machining accuracy is high, while shock resistance is poor.Impeller easily forms that each side gap is uneven, cause the impeller that rotates with
Fixed impeller outer shell phase wipes accident.In addition, dry-type submersible motor is placed in outlet passage, can influence pumping current goes out current
State, directly affect the efficiency of submersible mixed-flow pump.Former submersible mixed-flow pump configuration is complicated, and axial length is longer, not easy-maintaining, open and inspect.
The content of the invention
In order to solve the reliable operation sex chromosome mosaicism of submersible mixed-flow pump adapted motor, the safe operation for improving submersible pump is stable
Property, improve the submersible mixed-flow efficiency of pump, the present invention is improved by structure, there is provided it is a kind of it is simple in construction, be easy to the impeller opened and inspect of maintenance
Built-in submersible axial flow pump.
The present invention is achieved by the following technical solutions：
A kind of impeller built-in mixed flow immersible electric pump, including suction chamber, mixed-flow impeller and diffuser, in the axial direction of three
Portion is provided with rotating shaft, and rotating shaft suction side bearing chamber is provided with thrust bearing, and thrust bearing is bearing axle caused by electric pump operation
To thrust, other end inner chamber is provided with journal bearing, in addition to rotor, rotor fixed mount, motor stator and annular shape
Stator casing, motor stator are fixed in stator casing, and the axial both ends of stator casing are connected respectively suction chamber
In the middle part of excircle and in the middle part of the excircle of diffuser, the integral type being made up of rotor, rotor fixed mount and mixed-flow impeller
Rotor is located at motor stator intracavitary, forms Water-filled Type Submersible Motors, and mixed-flow impeller is fixedly welded on rotor fixed mount, motor
Rotor by inner ring positioning be assemblied in rotor fixed mount it is cylindrical on, then by pressing plate fastener by itself and rotor fixed mount phase
Connection, so that rotor, rotor fixed mount and mixed-flow impeller composition are integral type rotor；The rotor fixed mount it is interior
One end of the runner bucket of more than four is uniformly connected on circumference, the other end of the runner bucket of more than four connects respectively
Then impeller hub forms mixed-flow impeller, and mixed-flow impeller is located at the inner chamber position of rotor, makes rotor, rotor solid
Determine frame and mixed-flow impeller forms an entirety；The submersible motor is wet stator structure, and stator winding coil is water-fast winding
Coil, the material of water proof winding wires circle is high strength radiation crosslinking polyethylene.
During work, motor internal is full of water, is rotated by electromagnetic induction motor rotor, because rotor, rotor are solid
It is integral type rotor to determine frame and mixed-flow impeller composition, so as to drive mixed-flow impeller to rotate, realizes the purpose of conveying liquid.Electricity
Machine inner chamber is connected by mouth ring sealing structure with ambient water, big granule foreign on the one hand can be avoided to enter motor cavity, separately
On the one hand have and can be run for a long time in water, water is good as cooling medium, radiating condition, it can be ensured that motor safety reliability service.
Specifically, above-mentioned impeller built-in mixed flow immersible electric pump water suction end bearing is thrust bearing, and water outlet end bearing is footpath
To bearing, can bear radially, and can bears two-direction thrust bearing.
Specifically, the dynamic sealing of above-mentioned impeller built-in mixed flow immersible electric pump water suction bearing chamber is unbalanced type single-end surface machine
Tool seals, and the dynamic sealing of water outlet bearing chamber is integrated mechanical sealing, can effectively reduce installation accuracy, and floatability is good.
Specifically, set between above-mentioned impeller built-in mixed flow immersible electric pump suction side mechanical sealing base and integral type rotor
Changeover portion, for the interior streamline being connected between suction chamber and mixed-flow impeller, it is ensured that smooth, the reduction resistance damage of inner flow passage
Lose, improve pump efficiency.
Specifically, the rotor fixed mount of above-mentioned impeller built-in mixed flow immersible electric pump is used to fix rotor, and it is fixed
The cylindrical of rotor can suitably reduce according to mixed-flow impeller shape, so as to reduce the external diameter of rotor, and then improve wet
The performance of stator submersible motor.
Technical scheme more than, the beneficial effects of the invention are as follows：
1. rotor, rotor fixed mount and mixed-flow impeller composition are integral type rotor by the present invention, in structure significantly
Shorten submersible mixed-flow pump axial length, compared with dry diving mixed-flow pump, axial dimension about reduces 40%~50%, pump structure
It is compacter；The intensity and rigidity requirement of countershaft are reduced simultaneously, and submersible motor is placed in the outside of runner, does not influence submersible pump
Pumping current, improve the efficiency of submersible pump；
2. stator winding line uses high strength radiation crosslinking polyethylene water proof winding wires, suitable for long-term submerged in water, carry
The security reliability of high motor；
3. the rotating shaft both ends of impeller set journal bearing and thrust bearing respectively, 2 stable supporting constructions are formed, are protected
Demonstrate,prove impeller working stability safety；
4. the sealing of bearing chamber uses integrated mechanical sealing, installation accuracy requirement is reduced, and floatability is good；
Can suitably it be reduced according to impeller shape 5. the rotor fixed mount for fixing rotor is cylindrical, so as to reduce rotor
External diameter, and then improve the performance of wet stator submersible motor.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention,
Fig. 2 is integral type rotor structure schematic diagram,
Fig. 3 is mouth ring sealing structure schematic diagram.
Sequence number in upper figure：Mixed-flow impeller 1, runner bucket 101, impeller hub 102, rotor fixed mount 2, integral type turn
Son 3, rotor 301, blade 31, impeller hub 32, stator 4, diffuser 5, support 6, outgoing line device 7, suction chamber 8, machinery
Seal receptacle (water inlet end) 9, bearing chamber (water inlet end) 10, thrust bearing 11, mechanical seal 12, changeover portion 13, key 14, locking nut
15th, integrated mechanical sealing 16, journal bearing (water side) 17, fair water cone 18, pressing plate 19, rotating shaft 20, winding coil 21.
Arrow is water (flow) direction in figure.
Embodiment
Below in conjunction with the accompanying drawings, the present invention is described further.
Referring to Fig. 1 and Fig. 2, a kind of impeller built-in mixed flow immersible electric pump includes suction chamber 8, mixed-flow impeller 1 and stator
Body 5, the axially middle part of three are provided with rotating shaft 20, and the suction side bearing chamber 10 of rotating shaft 20 is provided with thrust bearing 11, thrust bearing 11
To bear axial thrust caused by electric pump operation, the other end (water side diffuser) inner chamber is provided with journal bearing 17, also
Include the stator casing of rotor 301, rotor fixed mount 2, motor stator 4 and annular shape, motor stator 4 is fixed in stator
In shell, the axial both ends of stator casing are connected respectively in the middle part of the excircle of suction chamber 8 and in the excircle of diffuser 5
Portion, the integral type rotor 3 being made up of rotor 301, rotor fixed mount 2 and mixed-flow impeller 1 are located at the intracavitary of motor stator 4,
Form Water-filled Type Submersible Motors, it is characterised in that：Mixed-flow impeller 1 is fixedly welded on rotor fixed mount 2, rotor 301
By inner circle positioning be assemblied in rotor fixed mount 2 it is cylindrical on, then by pressing plate 19 with fastener by itself and the phase of rotor fixed mount 2
Connection, so that rotor 301, rotor fixed mount 2 and the composition of mixed-flow impeller 1 are integral type rotor 3；The rotor is fixed
One end of the runner bucket 101 of more than four, the runner bucket 101 of more than four are uniformly connected on the inner periphery of frame 2
The other end respectively connected impeller hub 102 and form mixed-flow impeller 1, mixed-flow impeller 1 is located at the inner chamber of rotor 301
Position, rotor 301, rotor fixed mount 2 and mixed-flow impeller 1 is set to form an entirety；The winding wire of the motor stator 4
Enclose as water proof winding wires circle 21, the material of water proof winding wires circle 21 is high strength radiation crosslinking polyethylene.
Water suction end bearing is thrust bearing 11, and thrust bearing 11 can be born radially, and and can is born two-direction thrust bearing, gone out
Water end (W.E.) bearing is journal bearing 17.Journal bearing 17 and thrust bearing 11 play 2 stable support functions to integral type rotor 3,
Ensure that electric pump work safety is steady.
The dynamic sealing of water suction bearing chamber is unbalanced type single mechanical end face seal 12；The dynamic sealing of water outlet bearing chamber is packaging
Formula mechanical seal 16, installation accuracy can be effectively reduced, and floatability is good.In order to prevent impurities in water from entering integrated mechanical sealing
16, sealing property is destroyed, mouth ring sealing structure 22 is provided with the water inlet of diffuser 5, impurities in water can be filtered
Processing, ensure that integrated mechanical sealing 16 is safe and reliable.
In order to prevent impurities in water from entering the inner chamber of motor stator 4, water proof winding wires circle 21 is destroyed, in the exit of suction chamber 8
Mouth ring sealing structure 22 is respectively provided with the water inlet of diffuser 5, this structure can prevent big granule foreign from entering motor cavity,
And then impact of the particle debris to water proof winding wires circle 21 is prevented, protect the electrical insulation properties of motor.
Changeover portion 13 is set between suction side mechanical sealing base 9 and integral type rotor 3, for being connected suction chamber 8 and mixed flow
Interior streamline between formula impeller 1, it is ensured that smooth, the reduction drag losses of inner flow passage, raising pump efficiency.
Rotor fixed mount 2 is used to fix rotor 301, and it fixes the cylindrical of rotor 301 can be according to mixed-flow leaf
Take turns 1 shape suitably to reduce, so as to reduce the external diameter of rotor 301, and then improve the performance of wet stator submersible motor.
During work, motor internal is full of water, is rotated by electromagnetic induction motor rotor 301, because rotor 301,
Rotor fixed mount 2 and the composition of mixed-flow impeller 1 are integral type rotor 3, so as to drive mixed-flow impeller 1 to rotate, realize conveying liquid
The purpose of body.Motor cavity is connected by mouth ring sealing structure 22 with ambient water, on the one hand big granule foreign can be avoided to enter
Enter motor cavity, on the other hand having can run for a long time in water.Water is good as cooling medium, radiating condition, it can be ensured that motor is pacified
Full reliability service.
It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the technology of invention
Scheme is modified or equivalent substitution, and without departing from the scope of technical solution of the present invention, it all should cover the power in the present invention
In sharp claimed range.
Claims (7)
- A kind of 1. impeller built-in mixed flow immersible electric pump, it is characterised in that including suction chamber, mixed-flow impeller and diffuser, three The axially middle part of person is provided with rotating shaft, and the suction side bearing chamber of the rotating shaft is provided with thrust bearing, and thrust bearing is bearing electricity Axial thrust caused by pump operation, the other end inner chamber of suction side bearing chamber are provided with journal bearing, in addition to rotor, The stator casing of rotor fixed mount, motor stator and annular shape, the motor stator are fixed in stator casing, stator casing Axial both ends be connected respectively in the middle part of the excircle of suction chamber and in the middle part of the excircle of diffuser, by rotor, turn The integral type rotor of sub- fixed mount and mixed-flow impeller composition is located at motor stator intracavitary, forms Water-filled Type Submersible Motors, mixed flow Formula impeller welding is fixed on rotor fixed mount, rotor by inner ring positioning be assemblied in rotor fixed mount it is cylindrical on, then It is connected with rotor fixed mount with fastener by pressing plate, so that rotor, rotor fixed mount and mixed-flow impeller Form as integral type rotor；The one of the runner bucket of more than four is uniformly connected on the inner periphery of the rotor fixed mount End, the other end of runner bucket respectively connected impeller hub and form mixed-flow impeller, and mixed-flow impeller is located at rotor Inner chamber position, rotor, rotor fixed mount and mixed-flow impeller is formed an entirety, the submersible motor is wet stator Structure, stator winding coil are water proof winding wires circle.
- A kind of 2. impeller built-in mixed flow immersible electric pump according to claim 1, it is characterised in that the water proof winding wires The material of circle is IXPE.
- A kind of 3. impeller built-in mixed flow immersible electric pump according to claim 1, it is characterised in that the water suction bearing chamber Dynamic sealing be unbalanced type single mechanical end face seal, the dynamic sealing of water outlet bearing chamber is integrated mechanical sealing.
- 4. a kind of impeller built-in mixed flow immersible electric pump according to claim 3, it is characterised in that suction side bearing chamber is right Side sets mechanical sealing base, and for installing unbalanced type single mechanical end face seal, mechanical seal is set on the left of the bearing chamber of water side Seat, for installing integrated mechanical sealing.
- A kind of 5. impeller built-in mixed flow immersible electric pump according to claim 4, it is characterised in that suction side mechanical seal Changeover portion is set between seat and integral type rotor, for the interior streamline being connected between suction chamber and mixed-flow impeller.
- 6. a kind of impeller built-in mixed flow immersible electric pump according to claim 1, it is characterised in that rotor fixed mount is used for Fixed rotor, it is fixed the cylindrical of rotor and can be enlarged or reduce according to impeller shape, is dived with adjusting wet stator The performance parameter of hydroelectric machine.
- 7. a kind of impeller built-in mixed flow immersible electric pump according to claim 1, it is characterised in that in suction chamber exit Mouth ring sealing structure is respectively provided with the water inlet of diffuser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825317.2A CN107605755A (en) | 2017-09-14 | 2017-09-14 | A kind of impeller built-in mixed flow immersible electric pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710825317.2A CN107605755A (en) | 2017-09-14 | 2017-09-14 | A kind of impeller built-in mixed flow immersible electric pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107605755A true CN107605755A (en) | 2018-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710825317.2A Pending CN107605755A (en) | 2017-09-14 | 2017-09-14 | A kind of impeller built-in mixed flow immersible electric pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825518A (en) * | 2018-07-26 | 2018-11-16 | 邓悌康 | High lift full-tubular submersible mixed-flow electric pump in one kind |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB250177A (en) * | 1925-04-06 | 1926-07-08 | Oscar Simmen | Improvements in or relating to electrically driven rotary pumps |
| US5692886A (en) * | 1993-12-08 | 1997-12-02 | Ebara Corporation | Canned motor pump having concentric bearings |
| CN101787978A (en) * | 2009-11-13 | 2010-07-28 | 天津甘泉集团有限公司 | Novel fully-tubular electric submerged pump with shaft incapable of transferring torque |
| CN103452866A (en) * | 2013-09-17 | 2013-12-18 | 合肥恒大江海泵业股份有限公司 | Submersible axial-flow pump with inbuilt impeller |
| CN105485027A (en) * | 2016-01-14 | 2016-04-13 | 江苏亚太泵阀有限公司 | Short-wheelbase sand-prevention horizontal submersible tubular type axis-flow pump |
-
2017
- 2017-09-14 CN CN201710825317.2A patent/CN107605755A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB250177A (en) * | 1925-04-06 | 1926-07-08 | Oscar Simmen | Improvements in or relating to electrically driven rotary pumps |
| US5692886A (en) * | 1993-12-08 | 1997-12-02 | Ebara Corporation | Canned motor pump having concentric bearings |
| CN101787978A (en) * | 2009-11-13 | 2010-07-28 | 天津甘泉集团有限公司 | Novel fully-tubular electric submerged pump with shaft incapable of transferring torque |
| CN103452866A (en) * | 2013-09-17 | 2013-12-18 | 合肥恒大江海泵业股份有限公司 | Submersible axial-flow pump with inbuilt impeller |
| CN105485027A (en) * | 2016-01-14 | 2016-04-13 | 江苏亚太泵阀有限公司 | Short-wheelbase sand-prevention horizontal submersible tubular type axis-flow pump |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108825518A (en) * | 2018-07-26 | 2018-11-16 | 邓悌康 | High lift full-tubular submersible mixed-flow electric pump in one kind |
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Application publication date: 20180119 |