CN108512343A - Permanent magnet motor and immersible pump - Google Patents
Permanent magnet motor and immersible pump Download PDFInfo
- Publication number
- CN108512343A CN108512343A CN201810617996.9A CN201810617996A CN108512343A CN 108512343 A CN108512343 A CN 108512343A CN 201810617996 A CN201810617996 A CN 201810617996A CN 108512343 A CN108512343 A CN 108512343A
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- cavity
- bearing
- liquid
- permanent magnet
- bearing seat
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/132—Submersible electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
Abstract
The present invention relates to diving pump technical field more particularly to a kind of permanent magnet motors and immersible pump.Permanent magnet motor includes casing, housing, first bearing seat and second bearing seat；First bearing seat is connected to the first end of casing by the first screen board, and second bearing seat is connected to the second end of casing by the second screen board；First bearing seat and armature spindle form the first cavity；It is provided with air in first cavity；When first cavity immerses liquid, liquid level rises compressed air, until the pressure of air is identical as the pressure of liquid, at this point, the liquid level of liquid is located under first bearing；Permanent magnet is provided on the outside of armature spindle.Immersible pump includes permanent magnet motor.A kind of permanent magnet motor of present invention offer and immersible pump, contact to avoid motor middle (center) bearing, rotor core and motor stator with liquid.
Description
Technical field
The present invention relates to diving pump technical fields, more particularly, to a kind of permanent magnet motor and immersible pump.
Background technology
Immersible pump is also submerged pump, is a kind of latent pump to work (under liquid) in water.Immersible pump is urban sewage discharge, dirt
Water process, road and bridge engineering draining are irrigated in hydraulic engineering and the important equipment of water drainage etc..With national environmental protection regulation improve and
The enhancing of people's environmental consciousness, the immersible pump for sewage disposal have obtained more and more demands and application.Immersible pump is long-term
It slips into the sewage of various water quality and runs, working environment is severe.
Prior art immersible pump is by motor unit at electric motor operation is under liquid, and the entire rotor of motor is immersed in
In liquid.Wherein, when motor rotor is immersed in liquid, there are three parts to be not readily accessible to liquid：First part is
Bearing portions is related to lubrication and bearing life；The second part is rotor core portion, i.e. permanent magnet portion, because immersing liquid
Working environment is very poor for permanent magnet in body, the easy loss of excitation of permanent magnet；Third part is motor stator, needs to prevent liquid
Corrode motor stator.
Therefore, the application provides a kind of new permanent magnet motor and immersible pump regarding to the issue above.
Invention content
The purpose of the present invention is to provide a kind of permanent magnet motor, to avoid motor middle (center) bearing, rotor core and electronic
Machine stator is contacted with liquid.
The present invention also aims to provide a kind of immersible pump, with further avoid motor middle (center) bearing, rotor core and
Motor stator is contacted with liquid.
Based on above-mentioned first purpose, the present invention provides a kind of permanent magnet motor, including casing, rotor assembly, housing, the
One bearing block, second bearing seat, the first screen board and the second screen board；
The rotor assembly includes armature spindle and permanent magnet；
The casing be vertical structure, along the short transverse of the casing, the casing include corresponding first end and
Second end, and the first end is located at the top of the second end；
The first bearing seat is connected to the first end of the casing by first screen board, and the second bearing seat is logical
Cross the second end that second screen board is connected to the casing, and the casing, the first bearing seat, the second bearing
Cavity is formed between seat, first screen board and second screen board；
The housing is sheathed in the cavity, and the cavity is divided into mutual disconnected bore of stator and rotor
Chamber；
Wherein, first screen board, the inner wall of the casing, the outer wall of the housing and second screen board form institute
Bore of stator is stated, and the cavity that the bore of stator is sealing；The first bearing seat, the inner wall of the housing and second axis
The rotor chamber is formed between bearing；
The housing can transmit magnetic field；
The armature spindle is provided in the casing, the armature spindle is set in the housing, and the armature spindle
It is connect with the first bearing seat by first bearing close to the side of the first end, the armature spindle is close to the second end
Side connect with the second bearing seat by second bearing；
Wherein, the first cavity is formed between the first bearing seat and the armature spindle, and the first bearing is located at institute
It states in the first cavity；
It is provided with air in first cavity；
When first cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to by
The air is compressed in the direction of the nearly first end, until the pressure of the air is identical as the pressure of the liquid, at this point, institute
The liquid level for stating liquid is located under the first bearing；
The permanent magnet is provided on the outside of the armature spindle.
In any of the above-described technical solution, further, permanent magnet motor of the present invention further includes the first reinforcement
Ring；First reinforcing ring is set to the first end of the casing, and be set to the first bearing seat and the housing it
Between, it is used to support the housing；
And/or further include the second reinforcing ring；Second reinforcing ring is set to the second end of the casing, and is set to
Between the second bearing seat and the housing, it is used to support the housing.
In any of the above-described technical solution, further, shape between second bearing seat of the present invention and the armature spindle
At the second cavity, and the second bearing is located in second cavity；
It is provided with air in second cavity；
When second cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to by
The air is compressed in the direction of the nearly first end, until the pressure of the air is identical as the pressure of the liquid, at this point, institute
The liquid level for stating liquid is located under the second bearing.
In any of the above-described technical solution, further, permanent magnet motor of the present invention further includes first bearing branch
Frame；The first bearing is positioned by the shaft shoulder of the first bearing holder and the armature spindle；It is the first bearing seat, described
First cavity is formed between first bearing holder and the shaft shoulder of the armature spindle；
And/or further include second bearing holder；The second bearing passes through the second bearing holder and the armature spindle
The shaft shoulder close to the second end positions；The shaft shoulder of the second bearing seat, the second bearing holder and the armature spindle it
Between form second cavity.
In any of the above-described technical solution, further, it is close that first bearing of the present invention is located at first cavity
The side of the first end；
And/or the second bearing is located at second cavity close to the side of the first end.
In any of the above-described technical solution, further, permanent magnet motor of the present invention further includes rotor balancing knot
Structure；
The rotor balancing structure includes balancing frame and balance columns；
Balance cavity is offered on the balancing frame, along the extending direction of the balance cavity, the balance cavity runs through
The balancing frame；
The rotor axle sleeve is set in the counter balance pocket body, and is fixedly connected with the balancing frame；
The post holes to match with the balance columns is offered on the balancing frame, and the axis direction of the post holes is with respect to institute
State the axis direction offset of balance cavity；
The balance columns are inserted in the post holes.
In any of the above-described technical solution, further, the axis direction of post holes of the present invention and the balance cavity
Extending direction it is parallel.
In any of the above-described technical solution, further, post holes of the present invention has multiple, and multiple post holes are along institute
State being provided at circumferentially spaced for balancing frame.
In any of the above-described technical solution, further, balance columns of the present invention and the post holes clearance fit；
The balance columns are connected with the post holes by way of viscose glue or riveting.
Based on above-mentioned second purpose, the present invention provides a kind of immersible pump, including the permanent magnet motor.
Using above-mentioned technical proposal, the present invention has the advantages that：
It is provided with air in first cavity, when immersible pump to be set in liquid, liquid enters in immersible pump, meanwhile,
Entered in the first cavity close to the side of the second end by the first cavity, the depth immersed in liquid with immersible pump adds
Deep, the liquid level of liquid continues to rise in the first cavity, and liquid compresses the air to close to the direction of the first end, with sky
Air volume is compressed, and air increases the pressure of liquid, until the pressure of air is identical as the pressure of liquid, at this point, liquid
Liquid level no longer rises, at this point, the liquid level of the liquid is located under the first bearing, to ensure that first bearing will not be with liquid
Immersible pump reliably working under liquid is realized in contact.In conclusion using pressure balance principle, first bearing is protected in air
It is interior, it enables first bearing not contacted with liquid, improves reliability, and easy for installation.It is avoided in motor in conclusion realizing
First bearing and rotor core are contacted with liquid.
It should be noted that for accommodating stator in bore of stator.When work, motor is slipped into the liquid such as water and is run, and is turned
Sub- intracavitary can also immerse liquid, since cavity is divided into mutual disconnected bore of stator and rotor chamber, thus rotor chamber by housing
Interior liquid will not enter bore of stator；First screen board, the inner wall of the casing, second screen board and the housing
Outer wall forms the bore of stator, and the cavity that the bore of stator is sealing, and therefore, bore of stator will not immerse liquid from other positions
Body, enable bore of stator formed aneroid dry type cavity, to stator formed static seal, to protect stator, prevent stator by liquid corrosion,
Pollution.It should be noted that since the housing can transmit magnetic field, the normal work of stator and rotor is not influenced.
It is contacted with liquid in conclusion realizing and avoiding motor middle (center) bearing, rotor core and motor stator.
The immersible pump provided, including the permanent magnet motor are provided, motor middle (center) bearing, rotor iron are further avoided
Core and motor stator are contacted with liquid.
The additional aspect and advantage of the present invention will become apparent in following description section, or practice through the invention
Recognize.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram of permanent magnet motor provided in an embodiment of the present invention；
Fig. 2 is the partial enlarged view of the part A of permanent magnet motor shown in FIG. 1；
Fig. 3 is the partial enlarged view of the part B of permanent magnet motor shown in FIG. 1；
Fig. 4 is the partial enlarged view of the C portion of permanent magnet motor shown in FIG. 1；
Fig. 5 is the structural schematic diagram of permanent magnet motor provided in an embodiment of the present invention in application process.
Icon：1- casings；21- armature spindles；22- permanent magnets；The first carbon fiber layers of 231-；232- steel wire floors；233- second
Carbon fiber layer；24- stators；31- first bearing seats；32- second bearing seats；41- first bearings；42- second bearings；51- is shielded
Set；The first screen boards of 52-；The second screen boards of 53-；The first cavitys of 61-；The second cavitys of 62-；71- first bearing holders；The second axis of 72-
Hold holder；81- balancing frames；82- balance columns；The second reinforcing rings of 9-.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for the description present invention and simplify description, do not indicate or imply the indicated device or element must have a particular orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for description purposes only, and is not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment one
Shown in Fig. 1-Fig. 5, the present embodiment provides a kind of permanent magnet motors, including casing 1, rotor assembly, housing
51, first bearing seat 31, second bearing seat 32, the first screen board 52 and the second screen board 53；
The rotor assembly includes armature spindle 21 and permanent magnet 22；
The casing be vertical structure, along the short transverse of the casing, the casing include corresponding first end and
Second end, and the first end is located at the top of the second end；
The first bearing seat 31 is connected to the first end of the casing, the second bearing by first screen board 52
The second end that seat 32 is connected to the casing by second screen board 53, and the casing, the first bearing seat, described the
Cavity is formed between two bearing bracket, first screen board and second screen board；
The housing 51 is sheathed in the cavity, and the cavity is divided into mutual disconnected bore of stator and rotor
Chamber；
Wherein, first screen board, the inner wall of the casing, the outer wall of the housing and second screen board form institute
Bore of stator is stated, and the cavity that the bore of stator is sealing；The first bearing seat, the inner wall of the housing and second axis
The rotor chamber is formed between bearing；
The housing can transmit magnetic field；
The armature spindle 21 is provided in the casing, the armature spindle 21 is set in the housing 51, and described
Armature spindle 21 is connect by first bearing 41 with the first bearing seat 31 close to the side of the first end, the armature spindle 21
It is connect with the second bearing seat 32 by second bearing 42 close to the side of the second end；
The first cavity 61 is formed between the first bearing seat 31 and the armature spindle 21, and the first bearing 41 is located at
In first cavity 61；
It is provided with air in first cavity 61；
When first cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to by
The air is compressed in the direction of the nearly first end, until the pressure of the air is identical as the pressure of the liquid, at this point, institute
The liquid level for stating liquid is located under the first bearing；
The outside of the armature spindle 21 is provided with the permanent magnet 22.
Casing is vertical casing, that is, the axis direction of casing is vertical.
It is provided with air in first cavity, when immersible pump to be set in liquid, liquid enters in immersible pump, meanwhile,
Entered in the first cavity close to the side of the second end by the first cavity, the depth immersed in liquid with immersible pump adds
Deep, the liquid level of liquid continues to rise in the first cavity, and liquid compresses the air to close to the direction of the first end, with sky
Air volume is compressed, and air increases the pressure of liquid, until the pressure of air is identical as the pressure of liquid, at this point, liquid
Liquid level no longer rises, at this point, the liquid level of the liquid is located under the first bearing, to ensure that first bearing will not be with liquid
Immersible pump reliably working under liquid is realized in contact.In conclusion using pressure balance principle, first bearing is protected in air
It is interior, it enables first bearing not contacted with liquid, improves reliability, and easy for installation.
First bearing and rotor core in motor is avoided to be contacted with liquid in conclusion realizing.
It should be noted that for accommodating stator in bore of stator.When work, motor is slipped into the liquid such as water and is run, and is turned
Sub- intracavitary can also immerse liquid, since cavity is divided into mutual disconnected bore of stator and rotor chamber, thus rotor chamber by housing
Interior liquid will not enter bore of stator；First screen board, the inner wall of the casing, second screen board and the housing
Outer wall forms the bore of stator, and the cavity that the bore of stator is sealing, and therefore, bore of stator will not immerse liquid from other positions
Body, enable bore of stator formed aneroid dry type cavity, to stator formed static seal, to protect stator, prevent stator by liquid corrosion,
Pollution.It should be noted that since the housing can transmit magnetic field, the normal work of stator and rotor is not influenced.
It is contacted with liquid in conclusion realizing and avoiding motor middle (center) bearing, rotor core and motor stator.
Preferably, further include protective case；
The protective case includes the first carbon fiber layer 231, the second carbon fiber layer 233 and steel wire floor 232；The steel wire floor
232 are set to the side of axis of the permanent magnet 22 far from the armature spindle 21, and first carbon fiber layer 231 is set to
Between the permanent magnet 22 and the steel wire floor 232；Second carbon fiber layer 233 is set to the steel wire floor 232 far from institute
State the side of the first carbon fiber layer 231；
Second carbon fiber layer is coated with waterproof material on side and the armature spindle far from the steel wire floor.
In addition, including the first carbon fiber layer being set on the outside of permanent magnet by protective case, the first carbon fiber layer is protected forever
Magnet, steel wire floor play the role of that higher hamonic wave is connected, and protective case is conducive to the heat dissipation of rotor, are conducive to eliminate what stator generated
Influence of the higher hamonic wave to rotor.The steel wire floor is coated on side and the armature spindle far from first carbon fiber layer
Waterproof material ensures that water-repellent paint internal rotor component is not contacted with liquid.
It should be noted that the first carbon fiber layer and the second carbon fiber layer are made of carbon fibre material, carbon fiber is a kind of
High intensity, the new fiber materials of high modulus fibre of the phosphorus content 95% or more.It is by organic fibre such as flake graphite
Dimension is piled up along fiber axial direction, through microcrystalline graphite material obtained from carbonization and graphitization processing.Carbon fiber is " outer soft interior
Just ", quality is lighter than metallic aluminium, but intensity is higher than steel, and has corrosion-resistant, high-modulus characteristic, in defence and military and
Civilian aspect is all important materials.It not only has the intrinsic intrinsic property of carbon material, and the softness for having both textile fabric can add
Work is reinforcing fiber of new generation.
Carbon fiber has many excellent performances, and the axial strength and modulus of carbon fiber are high, and density is low, higher than performance, without compacted
Become, superhigh temperature resistant under non-oxidizing atmosphere, fatigue durability is good, and specific heat and electric conductivity between metal, thermally expand system between nonmetallic
Number is small and has anisotropy, good corrosion resistance, and X-ray transparent is good.Good electrical and thermal conductivity performance, electromagnetic wave shielding are good
Deng.
Steel wire floor is to form the cylinder-like structure that spiral coil is constituted by steel wire winding, and when winding equally applies pulling force and pulls steel
Silk, ensures the tightness of steel wire；First carbon fiber layer, the second carbon fiber layer and steel wire floor are alternately wound protective case, the first carbon
Fibrous layer and the second carbon fiber layer play a part of that permanent magnet, steel wire is protected to play a part of that higher hamonic wave is connected.
It should be noted that can still wind carbon fiber layer and steel wire floor, proof strength again outside the second carbon fiber layer
And magnetic property.
Preferably, shown in Figure 2, the permanent magnet motor described in the present embodiment further includes the first reinforcing ring；Described first
Reinforcing ring is set to the first end of the casing, and is set between the first bearing seat and the housing, is used to support
The housing；
And/or further include the second reinforcing ring 9；Second reinforcing ring 9 is set to the second end of the casing 1, and is arranged
Between the second bearing seat 32 and the housing 51, it is used to support the housing 51.
Specifically, further including the first reinforcing ring；First reinforcing ring is set to the first end of the casing, and is arranged
Between the first bearing seat and the housing, it is used to support the housing.
Alternatively, further including the second reinforcing ring；Second reinforcing ring is set to the second end of the casing, and is set to institute
It states between second bearing seat and the housing, is used to support the housing.
Alternatively, further including the first reinforcing ring；First reinforcing ring is set to the first end of the casing, and is set to institute
It states between first bearing seat and the housing, is used to support the housing.And further include the second reinforcing ring；Described second
Reinforcing ring is set to the second end of the casing, and is set between the second bearing seat and the housing, is used to support
The housing.
Preferably, further include the first reinforcing ring；First reinforcing ring is set to the first end of the casing, and is set to
Between the first bearing seat and the housing, it is used to support the housing.And further include the second reinforcing ring；Described
Two reinforcing rings are set to the second end of the casing, and are set between the second bearing seat and the housing, for branch
Support the housing.
That is, first bearing seat is sheathed within the housing, it is used to support side of the housing close to first end, and
First reinforcing ring is set between first bearing seat and shading ring, further supports housing, improves the intensity of housing.
Second bearing seat is sheathed within the housing, is used to support side of the housing close to second end, and second
Reinforcing ring is set between second bearing seat and shading ring, further supports housing, improves the intensity of housing.
Preferably, the material of the housing is metal.The housing of metal material can transmit magnetic field, and being capable of anti-corrosion
Erosion.
Preferably, housing is barrel-shaped for thin-walled, and by being stamped to form.
Optionally, the casing includes that head and the tail mutually enclose the side wall connect successively；
The side wall enables the casing form cylinder.
Shown in Figure 1, the permanent magnet motor described in the present embodiment further includes stator 24；
Also, stator 24 described in the present embodiment is set in the bore of stator, and corresponding with the armature spindle 21.Due to
Bore of stator is not connected to mutually with rotor chamber, is realized stator and rotor separation, that is, rotor is shielded using housing, with
Prevent rotor intracavity liquid from immersing bore of stator.
Preferably, the axis direction of the axis direction of the protective case and armature spindle overlaps, and enables structure more reliable.
Optionally, the protective case outside permanent magnet can have a multilayer, for example, two layers, three layers or four layers etc..
Preferably, shown in Figure 1, the second cavity 62 is formed between the second bearing seat 32 and the armature spindle 21,
And the second bearing 42 is located in second cavity 62；
It is provided with air in second cavity 62；
When second cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to by
The air is compressed in the direction of the nearly first end, until the pressure of the air is identical as the pressure of the liquid, at this point, institute
The liquid level for stating liquid is located under the second bearing.
Optionally, the first bearing seat, the armature spindle close to the side of the first end and the armature spindle axis
First cavity is formed between shoulder；
The first bearing seat forms the first gap between side and the shaft shoulder of the armature spindle far from the first end；
First gap enables to be connected to except first cavity and the first bearing seat.To enable first cavity
Liquid is immersed close to the side of the second end, and the air in the first cavity is compressed to close to the direction of first end.
When second cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to by
The air is compressed in the direction of the nearly first end, until the pressure of the air is identical as the pressure of the liquid, at this point, institute
The liquid level for stating liquid is located under the second bearing.
It is provided with air in second cavity, when immersible pump to be set in liquid, liquid enters in immersible pump, meanwhile,
Entered in the second cavity close to the side of the second end by the second cavity, the depth immersed in liquid with immersible pump adds
Deep, the liquid level of liquid continues to rise in the second cavity, and liquid compresses the air to close to the direction of the first end, with sky
Air volume is compressed, and air increases the pressure of liquid, until the pressure of air is identical as the pressure of liquid, at this point, liquid
Liquid level no longer rises, at this point, the liquid level of the liquid is located under the second bearing, to ensure that second bearing will not be with liquid
Immersible pump reliably working under liquid is realized in contact.
In conclusion using pressure balance principle, second bearing is protected in air, enables second bearing will not be with liquid
Contact further simplifies submersible pump structure, improves reliability, easy for installation.
Preferably, shown in Figure 5, the permanent magnet motor described in the present embodiment further includes first bearing holder 71；It is described
First bearing 41 is positioned by the shaft shoulder of the first bearing holder 71 and the armature spindle 21；It is the first bearing seat, described
First cavity is formed between first bearing holder and the shaft shoulder of the armature spindle；
And/or further include second bearing holder 72；The second bearing 42 by the second bearing holder 72 with it is described
Armature spindle 21 is positioned close to the shaft shoulder of the second end；The second bearing seat, the second bearing holder and the armature spindle
The shaft shoulder between form second cavity.
Specifically, further including first bearing holder；The first bearing passes through the first bearing holder and described turn
The shaft shoulder of sub- axis positions；Described in being formed between the first bearing seat, the first bearing holder and the shaft shoulder of the armature spindle
First cavity；
Alternatively, further including second bearing holder；The second bearing passes through the second bearing holder and the armature spindle
The shaft shoulder close to the second end positions；The shaft shoulder of the second bearing seat, the second bearing holder and the armature spindle it
Between form second cavity.
Alternatively, further including first bearing holder；The first bearing passes through the first bearing holder and the armature spindle
The shaft shoulder positioning；Described first is formed between the first bearing seat, the first bearing holder and the shaft shoulder of the armature spindle
Cavity；And further include second bearing holder；The second bearing is by the second bearing holder and the armature spindle close to institute
State the shaft shoulder positioning of second end；It is formed between the second bearing seat, the second bearing holder and the shaft shoulder of the armature spindle
Second cavity.
Preferably, further include first bearing holder；The first bearing passes through the first bearing holder and the rotor
The shaft shoulder of axis positions；Described is formed between the first bearing seat, the first bearing holder and the shaft shoulder of the armature spindle
One cavity；And further include second bearing holder；The second bearing is close by the second bearing holder and the armature spindle
The shaft shoulder of the second end positions；Shape between the second bearing seat, the second bearing holder and the shaft shoulder of the armature spindle
At second cavity.
Preferably, shown in Figure 1, the first bearing is located at first cavity close to the side of the first end；
And/or the second bearing is located at second cavity close to the side of the first end.
Specifically, the first bearing is located at first cavity close to the side of the first end；
Alternatively, the second bearing is located at second cavity close to the side of the first end.
Alternatively, the first bearing is located at first cavity close to the side of the first end；And the second bearing
Positioned at second cavity close to the side of the first end.
Preferably, the first bearing is located at first cavity close to the side of the first end；And second axis
It holds positioned at second cavity close to the side of the first end.
It is more reliable to the protection of first bearing and second bearing to enable.
Preferably, shown in Figure 4, the permanent magnet motor described in the present embodiment further includes rotor balancing structure；
The rotor balancing structure includes balancing frame 81 and balance columns 82；
Balance cavity is offered on the balancing frame 81, along the extending direction of the balance cavity, the balance cavity passes through
Wear the balancing frame 81；
The armature spindle 21 is sheathed in the counter balance pocket body, and is fixedly connected with the balancing frame 81；
The post holes to match with the balance columns is offered on the balancing frame 81, and the axis direction of the post holes is opposite
The axis direction offset of the balance cavity；
The balance columns 82 are inserted in the post holes.
It should be noted that axis direction offset of the axis direction of the post holes relative to the balance cavity, i.e.,：Post holes
Axis direction and balance the axis direction of cavity it is parallel and misaligned, alternatively, the axis direction of post holes with balance cavity axis
It is angled between line direction.
Theoretically, the center of gravity of motor rotor shaft is located on the axis of shaft, in actual processing, due to mismachining tolerance, turns
The axis of the deviation of gravity center armature spindle of sub- axis, thus generate uneven.
Motor rotor shaft when in use, is sheathed on the counter balance pocket of balancing frame by rotor balancing structure provided in this embodiment
In vivo, and shaft and balancing frame is enabled to be interference fitted, thus when armature spindle rotation, balancing frame rotates therewith.When rotor unbalanced shaft
When, i.e. the axis of the deviation of gravity center armature spindle of armature spindle, for example, the center of gravity of armature spindle is inclined to first direction with respect to the axis of shaft
From and generate vibrations, the post holes of balancing frame is set to the second direction of armature spindle axis, balance columns will be plugged in post holes, with increase
Add armature spindle in the weight of second direction, to balance offset of the rotor axis center to first direction, it is dynamic to realize rotor
Balance effectively avoids the rotor reliability caused by welding with turning from reducing.Wherein, first direction and second direction are opposite.
Optionally, rotor balancing structure setting in permanent magnet along the both ends of armature spindle axis direction.
Preferably, the axis direction of the post holes is parallel with the balance extending direction of cavity；
The post holes has multiple, and the multiple post holes being provided at circumferentially spaced along the balancing frame.
Consequently facilitating according to second direction be aligned post holes position, in order to balance shaft center of gravity deviation.
Optionally, the quantity of post holes is 2,3,4,5 etc..
The quantity of post holes is more, more accurately can plug balance columns in the post holes close to the position of second direction, from
And the balance of countershaft is more stable and accurate.
Preferably, multiple post holes are uniformly arranged along the circumferential direction of the balancing frame.
Optionally, the balance columns and the post holes clearance fit；
The balance columns are connected with the post holes by way of viscose glue or riveting.
The balance columns and the post holes clearance fit, in order to finely tune the position that balance columns are located in post holes, to enable
It is more accurate to the balance of rotor.
It should be noted that can also be interference fitted between the balance columns and the post holes.
Preferably, the balance columns are connected with the post holes by way of viscose glue or riveting, to improve balance columns
With the bonding strength of post holes, avoiding rotor, axis pin flies out under the influence of centrifugal force when rotating at high speed.
Preferably, the material of the balancing frame and the balance columns is carbon steel, stainless steel or steel alloy.Carbon steel refers mainly to
The mass fraction of carbon is less than 2.11% and without containing the steel for the alloying element being intentionally added.Otherwise referred to as straight carbon steel or carbon
Steel, hardness is big, and intensity is high, and at low cost.
It should be noted that the material of the balancing frame and the balance columns can also be stainless steel, steel alloy etc. other
Alloy material.
Embodiment two
Embodiment two provides a kind of immersible pump, and the immersible pump includes the permanent magnet motor described in embodiment one, implements
The technical characteristic of permanent magnet motor disclosed in example one is also applied for the embodiment, one published permanent magnet motor of embodiment
Technical characteristic is not repeated to describe.The embodiment of the immersible pump is described in further detail below in conjunction with the accompanying drawings.
To save length, the improvement feature of the embodiment is equally embodied in Fig. 1-Fig. 5, therefore, in conjunction with Fig. 1-Fig. 5 to this
The scheme of embodiment illustrates.
Shown in Fig. 1-Fig. 5, immersible pump provided in this embodiment, including the permanent magnet motor, it further avoids
Motor middle (center) bearing, rotor core and motor stator are contacted with liquid.
Immersible pump described in the present embodiment has the advantages that permanent magnet motor described in embodiment one, and the advantage is in embodiment
It is described in detail in one, is not repeated herein.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments
In included certain features rather than other feature, but the combination of the feature of different embodiments means in of the invention
Within the scope of and form different embodiments.For example, in claims above, embodiment claimed is appointed
One of meaning mode can use in any combination.The information for being disclosed in the background technology part is merely intended to deepen to this
The understanding of the general background technology of invention, and be not construed as recognizing or implying in any form that information composition has been ability
The prior art well known to field technique personnel.
Claims (10)
1. a kind of permanent magnet motor, which is characterized in that including casing, rotor assembly, housing, first bearing seat, second bearing
Seat, the first screen board and the second screen board；
The rotor assembly includes armature spindle and permanent magnet；
The casing is vertical structure, and along the short transverse of the casing, the casing includes corresponding first end and second
End, and the first end is located at the top of the second end；
The first bearing seat is connected to the first end of the casing by first screen board, and the second bearing seat passes through institute
State the second end that the second screen board is connected to the casing, and the casing, the first bearing seat, the second bearing seat, institute
It states and forms cavity between the first screen board and second screen board；
The housing is sheathed in the cavity, and the cavity is divided into mutual disconnected bore of stator and rotor chamber；
Wherein, first screen board, the inner wall of the casing, the outer wall of the housing and second screen board are formed described fixed
Sub- chamber, and the cavity that the bore of stator is sealing；The first bearing seat, the inner wall of the housing and the second bearing seat
Between form the rotor chamber；
The housing can transmit magnetic field；
The armature spindle is provided in the casing, the armature spindle is set in the housing, and the armature spindle is close
The side of the first end is connect by first bearing with the first bearing seat, the armature spindle close to the second end one
Side is connect by second bearing with the second bearing seat；
Wherein, the first cavity is formed between the first bearing seat and the armature spindle, and the first bearing is located at described the
In one cavity；
It is provided with air in first cavity；
When first cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to close to institute
The air is compressed in the direction for stating first end, until the pressure of the air is identical as the pressure of the liquid, at this point, the liquid
The liquid level of body is located under the first bearing；
The permanent magnet is provided on the outside of the armature spindle.
2. permanent magnet motor according to claim 1, which is characterized in that further include the first reinforcing ring；Described first reinforces
Ring is set to the first end of the casing, and is set between the first bearing seat and the housing, is used to support described
Housing；
And/or further include the second reinforcing ring；Second reinforcing ring is set to the second end of the casing, and is set to described
Between second bearing seat and the housing, it is used to support the housing.
3. permanent magnet motor according to claim 1, which is characterized in that between the second bearing seat and the armature spindle
The second cavity is formed, and the second bearing is located in second cavity；
It is provided with air in second cavity；
When second cavity immerses liquid close to the side of the second end, the liquid level of the liquid rises, and to close to institute
The air is compressed in the direction for stating first end, until the pressure of the air is identical as the pressure of the liquid, at this point, the liquid
The liquid level of body is located under the second bearing.
4. permanent magnet motor according to claim 3, which is characterized in that further include first bearing holder；The first axle
It holds and is positioned by the shaft shoulder of the first bearing holder and the armature spindle；The first bearing seat, the first bearing holder
First cavity is formed between the shaft shoulder of the armature spindle；
And/or further include second bearing holder；The second bearing is close by the second bearing holder and the armature spindle
The shaft shoulder of the second end positions；Shape between the second bearing seat, the second bearing holder and the shaft shoulder of the armature spindle
At second cavity.
5. permanent magnet motor according to claim 3, which is characterized in that the first bearing is located at first cavity and leans on
The side of the nearly first end；
And/or the second bearing is located at second cavity close to the side of the first end.
6. permanent magnet motor according to claim 1, which is characterized in that further include rotor balancing structure；
The rotor balancing structure includes balancing frame and balance columns；
Balance cavity is offered on the balancing frame, along the extending direction of the balance cavity, the balance cavity is through described
Balancing frame；
The rotor axle sleeve is set in the counter balance pocket body, and is fixedly connected with the balancing frame；
The post holes to match with the balance columns is offered on the balancing frame, and the axis direction of the post holes is relatively described flat
The axis direction offset of weighing apparatus cavity；
The balance columns are inserted in the post holes.
7. permanent magnet motor according to claim 6, which is characterized in that the axis direction of the post holes and the counter balance pocket
The extending direction of body is parallel.
8. permanent magnet motor according to claim 7, which is characterized in that the post holes has multiple, and multiple post holes
Along being provided at circumferentially spaced for the balancing frame.
9. permanent magnet motor according to claim 8, which is characterized in that the balance columns and the post holes clearance fit；
The balance columns are connected with the post holes by way of viscose glue or riveting.
10. a kind of immersible pump, which is characterized in that including such as claim 1-9 any one of them permanent magnet motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617996.9A CN108512343B (en) | 2018-06-15 | 2018-06-15 | Permanent magnet motor and submersible pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810617996.9A CN108512343B (en) | 2018-06-15 | 2018-06-15 | Permanent magnet motor and submersible pump |
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| CN108512343A true CN108512343A (en) | 2018-09-07 |
| CN108512343B CN108512343B (en) | 2023-12-01 |
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| CN201810617996.9A Active CN108512343B (en) | 2018-06-15 | 2018-06-15 | Permanent magnet motor and submersible pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474110A (en) * | 2018-12-05 | 2019-03-15 | 浙江西菱股份有限公司 | A kind of motor for water pump |
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| Publication number | Publication date |
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| CN108512343B (en) | 2023-12-01 |
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