44 results about "Rotor magnets" patented technology

The application relates to the technical field of motors, in particular to a rotor magnetic ring and a hollow cup motor. The rotor magnetic ring is a polar anisotropic magnetic ring, which comprises at least two pairs of magnetic poles, each pair of the magnetic poles is oppositely arranged on the two sides of the rotor magnetic ring, and the magnetic properties of adjacent magnetic poles are opposite; each magnetic pole comprises at least two magnetic force units arranged along the circumference of the magnetic pole in sequence, the magnetization directions of adjacent magnetic force units have a deflection angle beta, and the magnetization directions of all the magnetic force units are arranged along the circumference with the deflection angle beta, so that the magnetic field intensity on the outer side of the rotor magnetic ring is greater than that on the inner side, the magnetic field energy is concentrated in an effective working area, and the overall working performance of the hollow cup motor is improved.

The utility model provides a kind of fixing structure of inner rotor magnet, the fixing structure includes motor shaft, rotor core, magnet and fixed clip, the outer surface of motor shaft is evenly distributed with multiple pressing ribs along the axial direction, multiple pressing ribs are used to with the six petal sheet center hole structure of fixed clip interference fit;Multiple installation grooves are evenly provided on the outer circumference of rotor core, multiple installation grooves are used to accommodate multiple the magnet;Fixed clip includes six petal sheet, cantilever spring piece and sawtooth;The end of six petal sheet is inclined to horizontal plane 5-10 °;Cantilever spring piece is distributed in the outer ring part of fixed clip, and cantilever spring piece is V-shaped bending structure;The sawtooth is located in the outer circle edge of fixed clip, and sawtooth contacts the magnet, so that magnet axial limit position.The fixing structure provided by the utility model has the advantages of simple structure, easy installation, vibration absorption, elastic fixing, eccentric force control, magnetic field pulsation, improved heat dissipation and the like.

This utility model discloses a modulated magnetic field motor, comprising: A. a plurality of slots, Z, arranged in a 360° mechanical space around the stator circumference; B. the stator windings are divided into m phases, Z = m × n, n = 1, 2, 3, ..., in the 360° mechanical space around the stator circumference; C. the number of pole pairs of the fundamental magnetomotive force magnetic field formed by the stator windings in the 360° mechanical space around the stator circumference is Pm; D. the rotor magnets are arranged sequentially in the circumferential direction according to the N pole and S pole order, and the number of rotor magnet pole pairs formed along the 360° mechanical space around the rotor circumference is Pr; the number of rotor magnet pole pairs Pr of the modulated magnetic field motor must satisfy: Pr = Z ± Pm, and Z / (2 × Pr) ≠ 1, 1.5 × Pm ≤ Z, and [Z / (m × Pm)] ≠ integer.

This invention provides a method and apparatus for superconducting motor quench detection based on sliding time filtering, relating to the field of superconducting motor quench detection technology. The method includes: differentially processing the terminal voltage signals of adjacent superconducting rotor magnets in the superconducting motor; conducting three trial runs of the superconducting motor before quench detection to obtain interference frequency data; establishing sliding time windows with both long and short time scales during the actual operation of the superconducting motor, and performing notch filtering on the differential voltage signals of adjacent superconducting rotor magnets; performing linear regression fitting on the filtered signals within the sliding time windows to extract effective quench signal feature values; and establishing a quench protection criterion based on the quench feature values. This invention solves the problem of achieving high reliability and rapid response in quench detection technology under the complex interference environment of superconducting motor rotation operation, a problem that is difficult to address in existing technologies.

This invention relates to the field of robot joint drive technology, and discloses a standard planetary roller screw linear electric drive joint, including a housing assembly, a standard planetary roller screw assembly, a motor assembly, and an anti-rotation component. This invention employs a configuration where the screw nut rotates to drive the linear output of the screw. The motor rotor magnet is directly fixed to the outer circumferential surface of the motor rotor support base, making the screw nut also function as the motor rotor. The motor stator is fixed within the housing through a potting process. An anti-rotation component is connected to the end of the screw shaft to restrict circumferential rotation. This invention achieves deep integration of the motor and transmission components. While ensuring high power density, it leverages the processing advantages of the standard planetary roller screw to significantly reduce manufacturing difficulty and cost, and improves the overall positioning accuracy and thermal management performance of the joint.

A rotary electric machine includes: a rotor having a shaft extending in an axial direction and rotor magnets arranged along a circumferential direction; a stator having a coil and surrounding the rotor; a housing supporting the stator; a pair of magnetic bearings on opposite sides in the axial direction of the rotor magnet; and a position adjusting member held by the housing. The stator holds the rotor rotatably in the axial direction by a field current flowing through the coil. The magnetic bearing includes a cylindrical inner magnet fixed to the rotor and a cylindrical outer magnet fixed to the housing and surrounding the inner magnet, and holds the rotor rotatably in the radial direction. The rotor has a stepped surface facing the axial direction. The position adjusting member has an opposing surface facing the stepped surface, and is movable in the axial direction with respect to the housing.

This application discloses a suspended shaftless cooling fan, comprising: suspended blades, each including a suspension cylinder and blades; a fan frame, the fan frame having an annular groove, and a magnetic levitation positioning magnet assembly and a magnetic levitation drive assembly disposed between the annular groove and the outer wall of the suspension cylinder; the magnetic levitation drive assembly including a rotor magnet ring and an electromagnetic drive coil winding; the magnetic levitation positioning magnet assembly including a first positioning magnet, a second positioning magnet, a first positioning winding, and a second positioning winding. This application also discloses a control method. This invention belongs to the field of electrical engineering and heat dissipation equipment technology. Besides addressing the friction loss, efficiency reduction, heat generation, and wear problems caused by mechanical contact, it significantly improves the product's service life, operating efficiency, and reliability. By using multiple sets of distance sensors to monitor the rotor position in real time, it ensures that the fan always starts from the optimal position, avoiding vibration caused by eccentric starting.

The utility model discloses an outer rotor air -cooled joint module relates to robot joint technical field, including speed reducer subassembly, rotor yoke, front end cover and middle shell, the coaxial fixed connection of speed reducer subassembly's center wheel and rotor yoke, the inside fixed of rotor yoke is provided with rotor magnet steel, the inner wall of middle shell is closely connected with stator core, and rotor magnet steel and stator core cooperate and drive, and rotor yoke is equipped with end face part, and end face part is equipped with sector hole and protruding impeller piece, and impeller piece sets up in the hole wall both sides of sector hole, and rotor yoke and middle shell all have the heat conduction performance, and the front end cover has a plurality of ventilation holes. The utility model provides an outer rotor air -cooled joint module, in the compact structure layout, and rotor and stator are close to the shell piece, provide the best heat conduction path, and rotor yoke tail part sets up the impeller structure of axial air -blowing and strengthens the sector hole of airflow circulation, provides high -speed airflow, improves the air -cooling heat dissipation effect.

This invention relates to a method for manufacturing a motor and rotor for unmanned aerial vehicles (UAVs). The UAV motor includes a rotor and a stator. The rotor includes a main shaft, a rotor yoke, and multiple rotor magnets. The yoke is an integrally formed rotating housing, which is a hollow rotating body with an open bottom and an arc-shaped end cap on the top wall. The cavity formed inside the hollow housing is used to coaxially mount the stator. The rotating housing includes a transition section where the arc-shaped end cap and the rotating side wall are continuously connected. The arc-shaped end cap has a central shaft hole and multiple hollowed-out heat dissipation holes. The multiple rotor magnets are attached and fixed to the inner wall of the rotating side wall. The main shaft is inserted into the central shaft hole and rotatably connected to the stator. The UAV motor of this invention has higher structural strength and reliability.

This invention discloses a flexible assembly system and method for rotor magnets in new energy vehicle motors. The system includes a control unit and a worktable, and a feeding unit, a pushing unit, an assembly unit, and a positioning unit mounted on the worktable. The feeding unit stores and orderly supplies magnets. The pushing unit is located between the feeding unit and the assembly unit. The positioning unit is positioned below the assembly unit. The assembly unit vertically presses the magnets into the target core slots of the rotor core. The control unit is connected to the feeding unit, pushing unit, assembly unit, and positioning unit, facilitating control of the pushing unit to push the magnets to the assembly preparation position and the positioning unit to move the target core slots of the rotor core to the assembly execution position, triggering the assembly unit to perform the pressing, and then rotating the rotor core to the next target core slot until the assembly of all magnets in the rotor core is completed. This invention is applicable to the automated assembly of rotor magnets for new energy vehicle motors of various specifications, and offers high assembly efficiency and precision.

The device for automatically controlling rotor cooling oil flow of the present invention includes a housing having cooling oil channels; an input shaft, which is a hollow shaft rotatably disposed inside the housing; a rotor shaft connected to the input shaft, the rotor shaft having a first oil chamber arranged axially; and an oil guide pipe, the oil guide pipe being arranged axially inside the input shaft, the oil guide pipe having an oil guide hole arranged axially, the first oil chamber communicating with the cooling oil channels through the oil guide hole, the oil guide hole being a tapered hole with its diameter increasing in the direction away from the rotor shaft. When the motor is running at high speed, the device of this application can reduce the amount of cooling oil in the rotor, so as to reduce the rotor oil slinging and churning losses when the motor is running at high speed. Furthermore, the reduction in the amount of cooling oil in the rotor can increase the temperature of the rotor magnets, reduce the performance of the magnets, reduce the high-speed weak magnetic current, reduce copper loss, thereby improving the motor efficiency.

The application discloses a magnetic suspension motor system and two motor magnetic field arrangement methods for realizing the system. The system comprises a motor capable of generating torque, axial force and radial force when the driving coil is in operation, a sensor and an intelligent driving control unit. The working principle of the system is that the rotor is suspended by the driving coil to generate the axial force and the radial force on the rotor. When the driving coil needs to generate the force on the corresponding rotor magnet, the sensor senses the position relationship, the driving control unit controls the direction, duration and size of the driving coil current, a closed loop control is formed, and the rotor can be suspended and rotated. The system has the advantages of simple motor structure, the magnetic field force of the driving coil can be used as torque, axial force and radial force for adjusting the posture of the rotor, the force range of the rotor magnet for adjusting the posture is larger than that of the traditional magnetic suspension bearing, the posture control is easier, and the system has remarkable energy-saving effect.

A magnetic geared rotating machine includes: a stator; a rotor including a plurality of rotor magnets; and a magnetic pole piece rotor including a plurality of magnetic pole pieces each disposed at a radial position between the stator and the rotor. Each of the magnetic pole pieces has a magnetic pole piece end face facing one side in an axial direction. Each of the rotor magnets has a rotor magnet end face facing the one side. At least part of the magnetic pole piece end face is located on the other side in the axial direction relative to the rotor magnet end face, or a finger end face, of each of a plurality of fingers, facing the one side is located on the other side relative to a tooth end face, of a tooth of the stator, facing the one side, the plurality of fingers being configured to hold therebetween a stator magnet disposed on the tooth from both sides in a circumferential direction.

The utility model relates to the technical field of rotor assembly, specifically discloses a permanent magnet motor rotor magnetic steel inserting device. Including support, magnetic steel storage spare, false rotor and push assembly, false rotor is located at the top of magnetic steel storage spare, and false rotor is equipped with the multiple rotor magnetic steel grooves of annular distribution, and rotor magnetic steel groove extends longitudinally and is through and through up and down, push assembly is located at the bottom of magnetic steel storage spare, and push assembly includes the multiple magnetic steel push board of annular distribution and is used for driving magnetic steel push board to lift drive piece, the middle part of magnetic steel storage spare is equipped with magnetic attraction spare, and magnetic steel storage spare is equipped with multiple push board through -hole that can supply magnetic steel push board and pass through along the circumferential distribution of magnetic attraction spare, the top surface of magnetic steel storage spare is equipped with multiple magnetic steel passageway, and the tail end of each magnetic steel passageway and each push board through -hole one -to -one correspondence intercommunication, each rotor magnetic steel groove, each magnetic steel push board and each push board through -hole one -to -one up and down directly opposite. The device can realize the multiple storage and disposable fast insertion of magnetic steel, and the production efficiency is improved significantly.

A rotor for an electric machine includes a rotor lamination stack having a cavity, and a rotor magnet with a substantially rectangular cross section being arranged in the cavity. At least some of the rotor laminations include a spring tongue, which is unbent and reaches into a space provided for the rotor magnet in the unmounted state of the rotor magnet and which is bent and imposes an oblique force on the same in the mounted state of the rotor magnet based on elastic deformation. The oblique force is directed in an angle (α) of 0°>α>90° to longitudinal sides of the rectangular cross section of the rotor magnet. The stator and rotor may be implemented in an electric machine or a vehicle with the electric machine.

The application discloses a motor and a motor device, and relates to the technical field of machinery, wherein the motor comprises a motor rotating shaft, a rotor disc fixed to the motor rotating shaft, the rotor disc having opposite first and second surfaces, a positioning groove arranged on at least one surface of the rotor disc, and an integrated multi-pole magnetic ring embedded in the positioning groove and fixedly connected with the rotor disc. The multi-pole magnetic ring is magnetized along the axial direction, and forms multiple pairs of magnetic poles which are alternately distributed along the circumferential direction. The integrated multi-pole magnetic ring is used for assembly and magnetization, the size discreteness caused by the magnet blocks is eliminated, the flatness of the rotor magnet, the size precision and the uniformity of the magnetic field are improved, and meanwhile, the production process is simplified and the assembly efficiency is improved.

This utility model relates to the field of rotor assembly technology, and more particularly to a rotor magnet sheath assembly fixture. This utility model provides a rotor magnet sheath assembly fixture that can quickly assemble rotor magnet sheaths by extruding the sheaths, allowing for direct reuse after assembly. It increases the bonding area, reduces adhesive overflow, prevents magnet sheath displacement, improves assembly efficiency, and is easy to use. The rotor magnet sheath assembly fixture includes a mounting base plate and a rotor positioning seat, etc., with the rotor positioning seat connected to the upper side of the center of the mounting base plate. This utility model uses a rotating turntable to move the positioning pin, connecting block, and slider, causing the pressure head to move and contact the magnet sheath for extrusion, ensuring the magnet sheath fits snugly. After assembly, the rotor can be directly removed, thus enabling rapid assembly of the rotor magnet sheath by extruding the sheaths and allowing for direct reuse after assembly. This increases the bonding area, reduces adhesive overflow, prevents magnet sheath displacement, improves assembly efficiency, and is easy to use.

This invention discloses a hollow shaft rotor magnet assembly production line, including a conveying mechanism, a shaft frame assembly and gluing mechanism, a magnet mounting mechanism, and a cover sealing mechanism. The conveying mechanism includes a conveyor line and a clamping unit conveyed by the conveyor line. The shaft frame assembly and gluing mechanism includes a hollow shaft feeding unit, a retainer assembly unit, and a first gluing unit. The magnet mounting mechanism includes a magnet insertion unit, which is used to vertically insert magnets into the adhesive-coated surface of the hollow shaft, so that the magnets are limited by the retainer. The cover sealing mechanism includes a gripping unit and a second gluing unit. The gripping unit can grip the rotor cover and cover the outside of the hollow shaft, and the second gluing unit is used to apply adhesive to the inner wall of the rotor cover gripped by the gripping unit. This invention can solve the problems of low assembly efficiency and low assembly accuracy of traditional hollow shaft rotors, which rely heavily on manual or semi-automatic equipment.

The application provides a multifunctional kitchen appliance direct-current brushless motor, which is applied to the technical field of motor control and comprises a shell, a rotor assembly and a front cover and a rear cover matched with each other. The rotor assembly comprises an embedded chip, an axis and a plurality of magnets, a material reducing ring and a bearing. The axis passes through the center of the embedded chip. The multifunctional kitchen appliance direct-current brushless motor can be used for different food processing modes. However, the conventional direct-current brushless motor device uses a conventional Hall inductor. The conventional Hall inductor is unstable in detecting the position change of the rotor magnet NS pole, and the output torque is unstable when the rotating speed is too low. In daily use, for example, when the dough mixer is started, the inductance may be unstable due to the low rotating speed, and the dough mixer cannot be started. In addition, the torque is too small to continuously work when continuously mixing the dough.

This utility model relates to the field of electric vehicle motor technology, specifically disclosing a hub motor for electric vehicles. The hub motor includes: an electric drive housing, a motor shaft, a stator assembly, and rotor magnets. The electric drive housing has an internal cavity and is made of a lightweight alloy material. The motor shaft passes through the electric drive housing, and the stator assembly is disposed within the cavity. The stator assembly includes a stator core and coil windings, with the coil windings wound around the stator core. The stator core is fixedly mounted on the motor shaft, and the rotor magnets are spaced around the outer periphery of the stator core and fixedly mounted on the electric drive housing. This design, using a lightweight alloy electric drive housing, enables a lightweight design for the entire vehicle, reduces manufacturing costs, improves driving comfort and agility, and increases the vehicle's range.

The application provides an assembling method for permanent magnet motor rotor magnets, and relates to an assembling device, which comprises an assembling jig, a support provided with a clamping groove, a flexible track and a plurality of fool-proof magnets; the assembling method comprises the following steps: S1, a plurality of assembling magnets coated with an accelerant are respectively fixed on corresponding fool-proof magnets of the flexible track in a manner that opposite magnetic poles are opposite to each other, and the flexible track is pushed into the clamping groove simultaneously when one assembling magnet is fixed on a fool-proof magnet; S2, a stator iron ring coated with glue is fixed in the assembling jig; S3, the flexible track is pulled out of the clamping groove, and the assembling magnets move along the flexible track and are fixed under the adsorption of the fool-proof magnets; S4, the flexible track is wound on the outer periphery of the stator iron ring simultaneously when the flexible track is pulled out, so that the assembling magnets are aligned with preset installation positions on the stator iron ring; and S5, the assembling magnets are pressed into the stator iron ring, and the adhesive assembling is completed. The application can improve the efficiency and precision of magnet assembling.

The invention is a magnetic levitation washing machine and washing machine inner barrel, which comprises washing machine inner barrel and outer barrel two parts. Its main features are: washing machine inner barrel under the action of magnetic force, suspended in the air. At the same time, the motor rotor magnet group is installed on the washing machine inner barrel, and the motor stator coil group is installed on the outer barrel. The diameter of the washing machine inner barrel gradually decreases from the mouth to the bottom, and there is a fixed fan structure in the inner barrel. The barrel wall is designed without holes, and the inner barrel wall has protruding edges. The outer barrel is equipped with a counterweight water tank. In the washing process, the rotating inner barrel will drive the water and clothes to flow. In the dehydration process, the centrifugal force generated by the high-speed rotating inner barrel and the inclined inner barrel wall will throw out the excess water from the inner barrel mouth. At the same time, the fixed fan installed on the inner barrel can quickly dry the clothes in the wind generated by the high-speed rotation of the inner barrel. Thus, the problems of existing washing machines, such as loud noise, slow speed, easy damage, incomplete dehydration, unhygienic, and energy saving, are solved.

The application discloses a human body kinetic energy collection device based on nonlinear magnetic response and belongs to the technical field of energy collection and wearable devices. The human body kinetic energy collection device comprises an upper stator disc, a lower stator disc, a rotor magnet disc, an eccentric mass block and a nonlinear modulation magnet. The upper stator disc, the rotor magnet disc and the lower stator disc are coaxially stacked to form a containing cavity for the rotation of the rotor. The eccentric mass block is fixed to the outer edge of the rotor magnet disc and provides an eccentric driving torque by using the gravity component when the human body arm swings. The nonlinear modulation magnet is fixed to the gap of the trapezoidal coil on the stator disc, and the periodic interference between the alternating magnetic poles of the rotor magnet disc and the rotor magnet disc is generated when the rotor rotates, thereby constructing a single-dual stable nonlinear potential energy field. The nonlinear electromagnetic micro energy capture device is used for efficiently collecting the low-frequency and random arm swing kinetic energy of the human body, and the limitation of the narrow resonant frequency band and high starting threshold of the conventional single stable linear system is broken through.

The utility model discloses an axial flux motor rotor structure, include: rotor yoke, magnet, epoxy resin glue. Rotor yoke and magnet are pasted through epoxy resin glue, and the rotor yoke is disc type structure, and is provided with a plurality of groups of grooves along its circumferential, is used to accommodate the magnet of matching, the outer arc pole arc coefficient of groove is 0.6 0.9, and the inner arc pole arc coefficient is 0.5 0.85. The utility model discloses a magnet split type structure design, effectively reduce magnet eddy current loss, thereby reduce motor heating. Meanwhile, the magnet is pasted on the rotor yoke slot hole with epoxy resin glue, can effectively speed up rotor magnet pasting efficiency, and reduce cost.

This invention relates to a rotor magnet fixing structure, including a flywheel. The flywheel includes a connected annular side plate and a base plate. The base plate has an air inlet. A plurality of magnets are evenly distributed circumferentially on the inner annular surface of the annular side plate. A first magnet retaining ring is closely attached to the end face of each magnet away from the base plate. Circumferentially distributed fan blades are provided on the side of the first magnet retaining ring away from the magnet. Compared with the prior art, this invention, by setting fan blades on the magnet retaining ring to act as a centrifugal fan, can effectively dissipate the heat generated by the motor, greatly reducing motor temperature rise, thereby reducing motor copper loss, improving motor efficiency and service life. At the same time, the motor line load can be appropriately increased during design, thereby reducing motor cost and size. The motor has the aforementioned rotor magnet fixing structure and has the same technical effects.

The magnetic properties of the rotor can be changed without requiring a large current in the stator windings. [Solution] According to the first embodiment, the rotor 100 includes a first rotor core 120 having a flux barrier band in which non-magnetic regions and bridges are continuously arranged in a convex shape toward the first rotation axis CL when viewed with respect to one magnetic pole 80p sandwiched between two q axes, a first rotor 100 having a plurality of first rotor magnets 130, 140 arranged within the flux barrier band so as to sandwich the d axis, and a second rotor 210 provided within the flux barrier band so as to be able to rotate relative to the first rotor 100 around the second rotation axis CX. The magnetic path within the first rotor 100 changes as the rotation angle of the second rotor 210 changes.

The present invention relates to an electromagnetic motor system for driving an indicator (16) in front of a display panel (4). The system comprises: an electromagnetic motor including a stator (6) and a rotor (7), the stator being configured to face a first side of the display panel and including coils, the rotor being configured to face a second opposite side of the display panel and being formed as a ring to allow a readable area on the second side of the display panel (4) to be seen at least through the inner region of the ring, the rotor (7) including a set of rotor magnets placed along the ring; a guide (8) configured to hold the rotor (7) in a given position relative to the display panel while allowing the rotor to rotate relative to a rotor rotation axis; an indicator (16) coupled to or integrally formed with the rotor (7) such that the indicator is configured to rotate relative to the rotor rotation axis when the rotor (7) rotates due to the excitation coil (13); a sensor system (9) configured to determine rotation-related information of the rotor (7); and a control module (10) configured to feed an electrical signal to the coil to excite the coil, at least based on the rotation-related information from the sensor system (9).

The application discloses a protection mechanism and method for an EPS motor rotor magnet, relates to the technical field of rotor protection, and comprises a rotor, winding equipment and a workbench, the outer surface of the rotor is divided into a first magnet segment, a second magnet segment and a third magnet segment by the permanent magnets, and the outer surfaces of the first magnet segment, the second magnet segment and the third magnet segment are sequentially wound with Kevlar fiber threads by the winding equipment; in the application, Kevlar fiber threads are used on the EPS motor rotor, a layer of glue is coated on the Kevlar fiber threads after the Kevlar fiber threads pass through a glue box provided with ST-150HP, the Kevlar fiber threads are wound on the magnet surface by the equipment, the ST-150HP has low-temperature curing characteristics, and the demagnetization of the permanent magnet due to high temperature is prevented; due to the high tensile strength, high toughness, temperature resistance, low density of the Kevlar fiber thread material and the high toughness, temperature resistance and moisture resistance of the ST-150HP, even if the rotor generates high temperature under high speed, the winding effect of the Kevlar fiber threads will not be affected, so that the safety of the EPS motor is ensured.

The utility model relates to the field of laser cutting, and specifically provides an electromagnetic chuck, which comprises a pipe clamping assembly, a power assembly is connected to one side of the pipe clamping assembly, and the opposite side is fixed in a fixed support, a magnet mounting seat is connected to the pipe clamping assembly through the fixed support, a rotor magnet is installed on the upper surface of the magnet mounting seat, a grating identification strip is installed at the end face, and the grating identification strip is used in cooperation with a grating code sensor; the grating code sensor is fixed at the bottom of the fixed support and is close to the grating identification strip, an electromagnetic coil is further arranged at the fixed support, and the electromagnetic coil rotates in cooperation with the rotor magnet to detect the real-time position. Compared with the prior art, the utility model can improve the rotation speed and the rotation response speed, simultaneously eliminates the large-diameter gear machining on the old chuck, and reduces the cost of purchasing machines.

This invention relates to a bottom-centered disc-type axial flux magnetic stirring device, comprising an axial flux disc-type magnetic coupling positioned at the center of the inner bottom of a stirring tank. The coupling includes, from bottom to top, an outer rotor assembly, an isolation sleeve, and an inner rotor assembly. An agitator assembly is connected to the inner rotor assembly, and a motor drive assembly is connected to the outer rotor assembly. The inner / outer rotor assemblies are equipped with several circumferentially distributed, axially magnetized inner / outer rotor magnets, with the N and S poles of the magnets alternating circumferentially. An isolation sleeve is positioned between the inner and outer rotor assemblies to form a sealed isolation, and a vertical mandrel for vertically mounting the inner rotor assembly is fixedly mounted on the isolation sleeve. A thrust bearing is also provided between the vertical mandrel of the isolation sleeve and the outer rotor assembly. This invention optimizes the amount of magnets used, improves magnet utilization, significantly reduces manufacturing costs, and exhibits significant economic benefits. It also simplifies the equipment structure, reduces the number of parts, and lowers assembly and maintenance difficulty.