CN218266374U - Disc type magnetic force shield pump driven by permanent magnet synchronous motor of integrated controller - Google Patents

Abstract

The utility model relates to a disk magnetic force canned motor pump by integrated controller's PMSM driven, it includes: the pump body is fixedly connected with a motor assembly, and a stainless steel partition plate is arranged between the pump body and the motor assembly; the motor assembly is connected with a controller assembly; an impeller is arranged in the pump body, the middle part of the impeller is connected with an impeller shaft through a water bearing, and one end of the impeller shaft is fixedly connected with a stainless steel partition plate; one side of the impeller is fixedly connected with a water pump side disc type permanent magnetic steel magnetic disc; one side of a motor shaft of the motor assembly is fixedly connected with a motor side disc type permanent magnet steel magnetic disc; the attraction magnetic force of the disc type permanent magnet magnetic steel magnetic disc of the utility model is 1.67 times of the magnetic torque of the traditional inner rotor; simultaneously, the disk permanent magnet steel magnetic disc of this application, overload capacity is also stronger, does not have the magnetic drive pump load of traditional inner rotor type and changes when great, will take place the drawback of out of step shut down.

Description

Disc type magnetic force shield pump driven by permanent magnet synchronous motor of integrated controller

Technical Field

The utility model relates to the technical field of canned motor pumps, in particular to a disc type magnetic canned motor pump driven by a permanent magnet synchronous motor of an integrated controller; the device is widely applied to conveying clear water and fluid media with physical and chemical properties similar to that of the clear water, the temperature of the media is not more than 95 ℃, and the device is also suitable for ultralow-temperature fluid; the device is suitable for industrial and urban water supply and drainage, pressurization and water delivery of high-rise buildings, garden irrigation, fire-fighting pressurization, long-distance fluid delivery, heating and ventilation refrigeration cycle, cold and hot water circulation pressurization of bathrooms and the like and equipment matching; the device is particularly suitable for occasions with higher requirements on vibration and noise, such as an underground pump room, an air-conditioning refrigeration system and the like; the water softening agent can also be used for soft water without solid particles, and is suitable for occasions such as energy, metallurgy, chemical engineering, textile, paper making, food, sprinkling shops, hotels, restaurants, bathrooms, boiler hot water pressurized circulating conveying, urban heating systems and the like; the device is widely applied to petroleum and chemical industries, medicine, textile, nuclear power and urban water supply and drainage, fire fighting pressurization, pressurization and water supply of high-rise buildings, garden sprinkling irrigation, heating ventilation and refrigeration, and equal-temperature water circulation pressurization; especially for places with high requirements on vibration and noise, such as key projects, pump rooms, central air conditioners and the like; it can also be used to transport liquid whose pressure and temperature do not produce crystallization and solidification, especially the liquid and valuable liquid which are harmful and unsafe to human body and environment, such as medium with strong corrosivity, strong toxicity, volatility, radioactivity, etc.

Background

The traditional canned motor pump is driven by an asynchronous motor or a permanent magnet motor; the motor part is provided with a complex stator and rotor stainless steel shielding sleeve, and due to the increase of the shielding sleeve, the physical air gap of the motor is increased, the effective material of the motor is increased, and the efficiency of the motor is reduced.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the above problems in the prior art, the present invention provides a disk type magnetic force canned motor pump driven by a permanent magnet synchronous motor of an integrated controller.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

a disk-type magnetic force canned motor pump driven by a permanent magnet synchronous motor of an integrated controller, comprising: the pump body is fixedly connected with a motor assembly, and a stainless steel partition plate is arranged between the pump body and the motor assembly; the motor assembly is connected with a controller assembly, and a winding three-phase outgoing line of the motor assembly is electrically connected with a three-phase wiring terminal on the controller assembly;

an impeller is arranged in the pump body and conveys a medium from an inlet end to an outlet end of the pump body; the middle part of the impeller is connected with an impeller shaft through a water bearing; one end of the impeller shaft is fixedly connected with the stainless steel partition plate, and the impeller can rotate relative to the impeller shaft; one side of the impeller, which is close to the motor assembly, is fixedly connected with a water pump side disc type permanent magnet steel magnetic disc; one side of a motor shaft of the motor assembly, which is close to the pump body, is fixedly connected with a motor side disc type permanent magnet steel magnetic disc; the water pump side disc type permanent magnet steel magnetic disc and the motor side disc type permanent magnet steel magnetic disc are positioned on two sides of the stainless steel partition plate, and gaps are respectively reserved between the water pump side disc type permanent magnet steel magnetic disc and the motor side disc type permanent magnet steel magnetic disc and the stainless steel partition plate;

the water pump side disc type permanent magnet steel magnetic disc comprises a water pump side magnet steel fixing disc, a plurality of first magnet steel grooves are formed in the water pump side magnet steel fixing disc in an annular array mode, and first magnet steel is arranged in the first magnet steel grooves; the number of the first magnetic steels is eight, the first magnetic steels are divided into four N poles and four S poles, the magnetic poles of the first magnetic steels are distributed into N-S-N-S-N-S-N-S, and third magnetic steels are arranged between the adjacent N poles and the adjacent S poles;

the motor side disc type permanent magnet steel magnetic disc comprises a motor side magnet steel fixing disc, a plurality of second magnet steel grooves are formed in the motor side magnet steel fixing disc in an annular array mode, and second magnet steel is arranged in the second magnet steel grooves; the number of the second magnetic steels is eight, the second magnetic steels are divided into four N poles and four S poles, magnetic poles of the second magnetic steels are distributed into S-N-S-N-S-N-S-N, and fourth magnetic steels are arranged between the adjacent S poles and the adjacent N poles;

the N pole magnetic steel and the S pole magnetic steel in the first magnetic steel on the water pump side magnetic steel fixing disc are axially magnetized, and the third magnetic steel between the adjacent N pole and S pole is magnetized along the arc length or chord length direction; n pole magnetic steel and S pole magnetic steel in second magnetic steel on the motor side magnetic steel fixing disc are axially magnetized, and fourth magnetic steel between adjacent N poles and S poles is magnetized along the arc length or chord length direction.

Further, an end temperature sensor lead on the motor assembly is electrically connected with a thermistor terminal on the controller assembly; the controller assembly is provided with a 485 communication interface; and the controller component is provided with positive and negative wiring insertion pieces.

Further, the magnetic steel fixing disc on the water pump side is made of stainless steel materials; the first magnetic steel is fan-shaped, and the magnetizing direction is along the thickness direction of the first magnetic steel.

Further, the motor side magnetic steel fixing disc is made of a No. 10 steel material; the second magnetic steel is fan-shaped, and the magnetizing direction is along the thickness direction of the second magnetic steel.

Further, the impeller shaft is a ceramic shaft.

(III) advantageous effects

The beneficial effects of the utility model are that: 1. the motor side disc type permanent magnet steel magnetic disc is installed at the motor shaft end of the motor assembly, the water pump side disc type permanent magnet steel magnetic disc is symmetrically installed on the inner side of the impeller, the stainless steel partition plate is additionally arranged between the motor side disc type permanent magnet steel magnetic disc and the water pump side disc type permanent magnet steel magnetic disc, a reasonable air gap is formed between the two disc type permanent magnet steel magnetic discs and the stainless steel partition plate, the pump body end of the canned motor pump is completely isolated from the inside of the motor, and the working medium is ensured not to leak and flow into the inside of the motor.

2. The motor side disk type permanent magnet steel magnetic disk and the water pump side disk type permanent magnet steel magnetic disk are respectively designed into magnetic circuit structures with the magnetic field intensity enhanced on one side, the design of the scheme is 4 pairs of poles, and the magnetic field direction of the magnetic poles is mainly axial. The direction of magnetizing of disk magnet steel, the utility model discloses in be two kinds of directions of magnetizing that combine together of magnetizing, one kind is the axial magnetization, and one kind is along arc length or chord length direction magnetization. Through simulation optimization, the utility model discloses a disc permanent magnet steel magnetic disc's attraction magnetic force is 1.67 times of the magnetic force torque of traditional inner rotor, is 1.37 times of disc N, S alternative magnetic circuit. And simultaneously, the utility model discloses a disc permanent magnetism magnet steel magnetic disc, overload capacity is also stronger, does not have the magnetic drive pump load of traditional inner rotor type to change when great, will take place the drawback of out of step shut down.

3. The magnetic steel is fixed on the magnetic steel fixing disc, a blind hole for placing the magnetic steel is processed on the magnetic steel fixing disc, the magnetic steel fixing disc is made of magnetic conductive stainless steel on the impeller, magnetic conductive 10# steel is used on the motor side, and a magnetic conductive material is used as the fixing disc, so that the magnetized magnetic steel can be conveniently pasted, the axial magnetic field intensity can be enhanced, and a good magnetism gathering effect is achieved; even if adopt the magnet steel matrix distribution of this application, can adopt no yoke magnetic circuit, even use no yoke magnetic circuit, consider that the fixed of magnet steel also has the fixed plate of aluminium alloy or stainless steel's plectane to do the magnet steel, and the fixed plate cost of magnet steel can be lower with the commonly used steel sheet of magnetic conduction.

4. The impeller becomes an independent rotating body, and the smooth operation is reached through an solitary water bearing and a short ceramic axle, simple structure, and the resistance is littleer, reaches the super-silent effect, and simultaneously, the reliability improves.

5. Two shielding sleeves are omitted in the motor assembly, so that the air gap of the motor is reduced, the air gap magnetic field intensity is improved, the main material of the motor can be further reduced, the material utilization rate is improved, the iron core and the winding are shortened, the motor loss is reduced, and the motor efficiency is further improved; furthermore, the process of encapsulating the stator and the rotor required by the original canned motor pump and the encapsulated heat-conducting glue material are omitted, the cost is reduced, the structure is simpler, and the operation is more reliable.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a side view of the structure of an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a controller assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a side-disk permanent magnet magnetic steel magnetic disk of a water pump according to an embodiment of the present invention;

fig. 5 is a schematic view showing the magnetizing directions of the third and fourth magnetic steels according to an embodiment of the present invention;

fig. 6 is a schematic view of the magnetizing directions of the first and second magnetic steels according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a motor side disc type permanent magnet magnetic steel magnetic disc according to an embodiment of the present invention;

fig. 8 is a schematic view of the magnetizing directions of the third and fourth magnetic steels according to an embodiment of the present invention;

fig. 9 is a schematic diagram of the angular characteristics of the disc permanent magnet steel magnetic disc according to an embodiment of the present invention;

fig. 10 is a schematic view of the transient speed performance of the disc-type permanent magnet magnetic steel magnetic disc according to an embodiment of the present invention;

fig. 11 is a schematic view of the transient speed of the rotor under the no-load condition of the rotation speed 4200rpm of the disc-type permanent magnet steel magnetic disc motor according to an embodiment of the present invention;

fig. 12 shows the comparison of the no-load/full-load rotation speed of the permanent magnet motor disk type permanent magnet magnetic steel magnetic disk according to an embodiment of the present invention: a speed increasing schematic diagram;

fig. 13 shows the comparison of the no-load/full-load rotation speed of the permanent magnet disk type permanent magnet magnetic disk according to an embodiment of the present invention: a speed reduction schematic diagram;

fig. 14 shows the comparison of the no-load/full-load rotation speed of the permanent magnet motor disk type permanent magnet magnetic steel magnetic disk according to an embodiment of the present invention: the speed equalization is shown schematically.

Detailed Description

For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.

The utility model discloses a disk magnetic force canned motor pump by PMSM drive of integrated control ware of an embodiment, as shown in fig. 1-3, it includes: the pump comprises a pump body 1, wherein a motor component 2 is fixedly connected to the pump body 1, a stainless steel partition plate 31 is arranged between the pump body 1 and the motor component 2 to separate the pump body 1 from the motor component 2, so that a medium in the pump body 1 cannot enter the motor component 2 to damage the motor component 2; the motor assembly 2 is the prior art, and the structure is not described again; the motor component 2 is connected with a controller component 8, and a winding three-phase outgoing line of the motor component 2 is electrically connected with a three-phase wiring end 81 on the controller component 8; the end temperature sensor lead on the motor component 2 is electrically connected with the thermistor terminal 82 on the controller component 8; the controller component 8 is provided with a 485 communication interface 83; and the controller component 8 is provided with a positive and negative wiring insertion sheet 84.

Specifically, in the present embodiment, as shown in fig. 1, 4, 5, 6, and 8, an impeller 30 is provided in the pump body 1, and the impeller 30 conveys the medium from the inlet end to the outlet end of the pump body 1; the middle part of the impeller 30 is connected with an impeller shaft 3 through a water bearing 26, and the impeller shaft 3 is a ceramic shaft; one end of the impeller shaft 3 is fixedly connected with a stainless steel partition plate 31, and the impeller 30 can rotate relative to the impeller shaft 3; one side of the impeller 30 close to the motor component 2 is fixedly connected with a water pump side disc type permanent magnet steel magnetic disc 25; one side of a motor shaft of the motor component 2 close to the pump body 1 is fixedly connected with a motor side disc type permanent magnet steel magnetic disc 24; the water pump side disc type permanent magnet steel magnetic disc 25 and the motor side disc type permanent magnet steel magnetic disc 24 are positioned on two sides of the stainless steel partition plate 31, and gaps are respectively reserved between the water pump side disc type permanent magnet steel magnetic disc 25 and the motor side disc type permanent magnet steel magnetic disc 24 and the stainless steel partition plate 31; the water pump side disc type permanent magnet steel magnetic disc 25 comprises a water pump side magnet steel fixing disc 251, a plurality of first magnet steel grooves are formed in the water pump side magnet steel fixing disc 251 in an annular array mode, and first magnet steel 253 is arranged in each first magnet steel groove; the number of the first magnetic steel 253 is eight, and the first magnetic steel 253 is divided into four N poles and four S poles, wherein the magnetic poles of the first magnetic steel 253 are distributed into N-S-N-S; a third magnetic steel 254 is arranged between the adjacent N pole and S pole; the water pump side magnetic steel fixing disc 251 is made of stainless steel materials; the first magnetic steel 253 is fan-shaped, and the magnetizing direction is along the thickness direction of the first magnetic steel 253.

Further, in this embodiment, as shown in fig. 1, fig. 5, fig. 6, fig. 7, and fig. 8, the motor-side disk-type permanent magnet steel magnetic disk 24 includes a motor-side magnetic steel fixing disk 241, a plurality of second magnetic steel grooves are arranged on the motor-side magnetic steel fixing disk 241 in an annular array manner, and second magnetic steels 243 are arranged in the second magnetic steel grooves; the number of the second magnetic steels 243 is eight, and the second magnetic steels are divided into four N poles and four S poles, wherein the magnetic poles of the second magnetic steels 243 are distributed as S-N-S-N; a fourth magnetic steel 244 is arranged between the adjacent S pole and the N pole; the motor side magnetic steel fixing disc 241 is made of a 10# steel material; the second magnetic steel 243 is fan-shaped, and the magnetizing direction is along the thickness direction of the second magnetic steel 243; the N pole magnetic steel and the S pole magnetic steel in the first magnetic steel 253 on the water pump side magnetic steel fixing disc 251 are axially magnetized, and the third magnetic steel 254 between the adjacent N pole and S pole is magnetized along the arc length or chord length direction; the magnetic steels of the N pole and the S pole in the second magnetic steel 243 on the motor side magnetic steel fixing disc 241 are axially magnetized, and the fourth magnetic steel 244 between the adjacent N pole and the S pole is magnetized along the arc length or chord length direction of the fourth magnetic steel 244; the magnetic conductive material is adopted as the fixed disc, so that the magnetized magnetic steel can be conveniently pasted, the axial magnetic field intensity can be enhanced, and a good magnetic gathering effect is achieved.

This application is through the motor axle head installation motor side disk permanent magnet steel magnetic disc 24 at motor element 2, water pump side disk permanent magnet steel magnetic disc 25 at the inboard installation symmetry of impeller 30, and add a stainless steel baffle 31 between motor side disk permanent magnet steel magnetic disc 24 and water pump side disk permanent magnet steel magnetic disc 25, there is reasonable air gap between two disk permanent magnet steel magnetic discs and the stainless steel baffle, like this with the pump body end and the inside complete isolation of motor of canned motor pump, ensure that the working medium can not leak and flow into inside the motor.

This application motor side dish formula permanent magnet steel magnetic disc 24 and water pump side dish formula permanent magnet steel magnetic disc 25 design into unilateral reinforcing magnetic field intensity's magnetic circuit structure respectively, and this case example designs for 4 antipodes, and magnetic pole magnetic field direction is for using the axial to be main. The direction of magnetizing of disk magnet steel, the utility model discloses in be two kinds of directions of magnetizing that combine together of magnetizing, one kind is the axial magnetization, and one kind is along arc length or chord length direction magnetization. Through simulation optimization, the utility model discloses a disc permanent magnet steel magnetic disc's attraction magnetic force is 1.67 times of the magnetic force torque of traditional inner rotor, is 1.37 times of disc N, S alternative magnetic circuit. And simultaneously, the utility model discloses a disc permanent magnetism magnet steel magnetic disc, overload capacity is also stronger, does not have the magnetic drive pump load of traditional inner rotor type to change when great, will take place the drawback of out of step shut down.

In the embodiment, the magnetic steel is fixed on the magnetic steel fixing disc, the blind hole for placing the magnetic steel is processed on the magnetic steel fixing disc, the magnetic steel fixing disc is made of magnetic conductive stainless steel on the impeller, the magnetic conductive 10# steel is used on the motor side, and the magnetic conductive material is used as the fixing disc, so that the magnetized magnetic steel can be conveniently pasted, the axial magnetic field intensity can be enhanced, and a good magnetic gathering effect is achieved; even if adopt the magnet steel matrix distribution of this application, can adopt no yoke magnetic circuit, even use no yoke magnetic circuit, consider that the fixed of magnet steel also has the fixed plate of aluminium alloy or stainless steel's plectane to do the magnet steel, and the fixed plate cost of magnet steel can be lower with the commonly used steel sheet of magnetic conduction.

The utility model provides an impeller becomes an independent rotor, reaches smooth operation through an solitary water bearing and a short ceramic axle, simple structure, and the resistance is littleer, reaches the super-silent effect, and simultaneously, the reliability improves.

Two shielding sleeves are omitted in the motor assembly, so that the air gap of the motor is reduced, the air gap magnetic field intensity is improved, the main material of the motor can be further reduced, the material utilization rate is improved, the iron core and the winding are shortened, the motor loss is reduced, and the motor efficiency is further improved; furthermore, the encapsulating process of the stator and the rotor and the encapsulating heat-conducting glue material required by the original canned motor pump are omitted, the cost is reduced, the structure is simpler, and the operation is more reliable. In addition, between the pump body and the permanent magnet driving motor, a stainless steel clapboard is added between two disc type permanent magnet magnetic steel magnetic discs, the working medium at the side of the pump body is also a good cooling medium, which can fully take away the loss heat of the permanent magnet motor, and in addition, the utility model discloses a motor air gap is reduced, the air gap magnetic field intensity is improved, the main material of the motor can be further reduced, the material utilization rate is improved, the iron core and the winding are shortened, the motor loss is reduced, the motor efficiency is improved, therefore, the motor temperature rise is further reduced; in the case, the stable temperature of the motor winding is 65 ℃, and the temperature rise is only 33K.

As shown in fig. 9, in the torque angle characteristic, when the disc type permanent magnet steel magnetic disc at the shaft end of the permanent magnet motor rotor and the disc type permanent magnet steel magnetic disc at the inner side of the impeller of the lead shield pump are at 43 degrees of electrical angle, the magnetic pulling force of the magnetic discs reaches 2.5Nm at maximum; the torque can be normally transmitted in the whole working range of the utility model.

As shown in fig. 10, which is a simulation curve of the transient speed performance of the prototype, the input speed of the motor is increased from 0rpm to 4200rpm within 0.5S, and after the motor is stably operated for 0.5S, the input speed of the motor is decreased from 4200rpm to 0rpm. The transient speed performance reaches that of the independent motor.

As shown in fig. 11, when the rated rotation speed of the disc-type permanent magnet steel magnetic disc motor is 4200rpm, and under no-load condition, and when an acceleration instruction is given, the transient speed of the rotor fluctuates, the rotation speed of the rotor can be within 0.2S (0.7-0.5), and the rotor reaches the stable rotation speed again.

As shown in fig. 12, the speed of the permanent magnet motor disk type permanent magnet magnetic steel magnetic disk is at no-load/full-load speed, and when acceleration simulation is performed, the speed change of the no-load speed is faster than that of the full-load speed because of the influence of the medium resistance; the overall trend is substantially the same.

As shown in fig. 13, when the speed reduction simulation is performed at the no-load/full-load rotation speed of the permanent magnet motor disc type permanent magnet magnetic steel magnetic disc, at the beginning stage, the changes of the no-load and full-load rotation speeds are basically consistent, and the speed reduction stopping section is approached, the no-load speed reduction is stable, and the full-load speed reduction section has a smaller amplitude drop due to the influence of the medium resistance.

As shown in fig. 14, when the no-load/full-load rotation speed of the permanent magnet motor disc type permanent magnet magnetic steel magnetic disc is subjected to uniform speed simulation, the falling amplitude of the no-load rotation speed is smaller and the falling amplitude of the full-load rotation speed is larger in the initial stage; but the initial stage only maintains 0.2S, the no-load rotating speed and the full-load rotating speed have stable trend and basically consistent change, and the stable rotating speed is basically reached at 0.1S.

From the above simulation curve characteristic analysis, the permanent magnet motor disk type permanent magnet magnetic steel magnetic disk has the quick response characteristic equivalent to that of an independent permanent magnet motor, and the stable following body shows excellent practical value.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over", etc. may be used herein to describe the spatial positional relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.

Claims (5)

1. By integrated controller's permanent magnet synchronous motor driven disk magnetic force canned motor pump, its characterized in that, it includes: the pump comprises a pump body (1), wherein a motor component (2) is fixedly connected to the pump body (1), and a stainless steel partition plate (31) is arranged between the pump body (1) and the motor component (2); the motor component (2) is connected with a controller component (8), and a winding three-phase outgoing line of the motor component (2) is electrically connected with a three-phase wiring terminal (81) on the controller component (8);

an impeller (30) is arranged in the pump body (1), and the impeller (30) conveys a medium from an inlet end to an outlet end of the pump body (1); the middle part of the impeller (30) is connected with an impeller shaft (3) through a water bearing (26); one end of the impeller shaft (3) is fixedly connected with the stainless steel partition plate (31), and the impeller (30) can rotate relative to the impeller shaft (3); one side of the impeller (30) close to the motor component (2) is fixedly connected with a water pump side disc type permanent magnet magnetic steel magnetic disc (25); one side of a motor shaft of the motor component (2) close to the pump body (1) is fixedly connected with a motor side disc type permanent magnetic steel magnetic disc (24); the water pump side disc type permanent magnet steel magnetic disc (25) and the motor side disc type permanent magnet steel magnetic disc (24) are positioned on two sides of the stainless steel partition plate (31), and gaps are respectively reserved between the water pump side disc type permanent magnet steel magnetic disc (25) and the motor side disc type permanent magnet steel magnetic disc (24) and the stainless steel partition plate (31);

the water pump side disc type permanent magnet steel magnetic disc (25) comprises a water pump side magnetic steel fixing disc (251), a plurality of first magnetic steel grooves are formed in the water pump side magnetic steel fixing disc (251) in an annular array mode, and first magnetic steels (253) are arranged in the first magnetic steel grooves; the number of the first magnetic steels (253) is eight, the first magnetic steels are divided into four N poles and four S poles, magnetic poles of the first magnetic steels (253) are distributed into N-S-N-S-N-S-N-S, and third magnetic steels (254) are arranged between the adjacent N poles and S poles;

the motor side disc type permanent magnet steel magnetic disc (24) comprises a motor side magnetic steel fixing disc (241), a plurality of second magnetic steel grooves are formed in the motor side magnetic steel fixing disc (241) in an annular array mode, and second magnetic steels (243) are arranged in the second magnetic steel grooves; the number of the second magnetic steels (243) is eight, the second magnetic steels are divided into four N poles and four S poles, magnetic poles of the second magnetic steels (243) are distributed into S-N-S-N-S-N-S-N, and fourth magnetic steels (244) are arranged between the adjacent S poles and the adjacent N poles;

n and S pole magnetic steels in a first magnetic steel (253) on a magnetic steel fixing disc (251) at the water pump side are axially magnetized, and a third magnetic steel (254) between adjacent N poles and S poles is magnetized along the arc length or chord length direction; n pole magnetic steel and S pole magnetic steel in second magnetic steel (243) on the motor side magnetic steel fixing disc (241) are magnetized in the axial direction, and fourth magnetic steel (244) between the adjacent N pole and S pole are magnetized along the arc length or chord length direction.

2. The controller-integrated PMSM-driven disc-type magnetically shielded pump of claim 1, wherein: the lead of the end temperature sensor on the motor component (2) is electrically connected with a thermistor terminal (82) on the controller component (8); a 485 communication interface (83) is arranged on the controller component (8); and the controller component (8) is provided with a positive and negative wiring insertion piece (84).

3. The disc-type magnetic canned motor pump driven by a permanent magnet synchronous motor of an integrated controller of claim 1, characterized in that: the magnetic steel fixing disc (251) on the water pump side is made of stainless steel materials; the first magnetic steel (253) is in a fan shape, and the magnetizing direction is along the thickness direction of the first magnetic steel (253).

4. The controller-integrated PMSM-driven disc-type magnetically shielded pump of claim 1, wherein: the motor side magnetic steel fixing disc (241) is made of a 10# steel material; the second magnetic steel (243) is fan-shaped, and the magnetizing direction is along the thickness direction of the second magnetic steel (243).

5. The controller-integrated PMSM-driven disc-type magnetically shielded pump of claim 1, wherein: the impeller shaft (3) is a ceramic shaft.

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