CN216699793U - Composite magnetic driver - Google Patents

Abstract

The application provides a composite magnetic driver, including inner rotor, outer rotor and spacer sleeve, the inner rotor is placed in the inside of spacer sleeve, the outer rotor is placed in the outside of spacer sleeve, the inner and outer rotors are equipped with axial magnetic steel arranged along the axial direction, also equipped with torque magnetic steel arranged along the circumferential direction, the inner rotor connects the driving device as the driving shaft of the driver, the outer rotor is used as the driven shaft, the spacer sleeve connects the reaction kettle to play a sealing role, when the inner rotor does axial linear motion, according to the characteristic of the magnet, the inner and outer axial magnetic steel can be misplaced to form axial push-pull force, let the outer rotor follow the inner rotor to do axial motion together; when the inner rotor rotates radially, the inner axial magnetic steel and the outer axial magnetic steel are staggered to form push-pull force for driving the outer rotor to rotate, so that the outer rotor rotates along with the inner rotor, the inner rotor can drive the outer rotor to do linear motion in the axial direction and can drive the outer rotor to do rotary motion at the same time, and a specific driver does not need to be replaced for use.

Description

Composite magnetic driver

Technical Field

The utility model relates to the technical field of transmission devices, in particular to a composite magnetic transmission device.

Background

In trade manufacturing process such as chemical industry, medicines, use magnetic actuator often to stir solid-state, liquid or gaseous material that adds to original liquid, make it fully dissolve in original liquid for the mass transfer of material, the agitator still need reciprocate except rotatory stirring among the stirring process, guarantees that each aspect of reactant is the intensive mixing even among the reation kettle.

The existing magnetic drivers are generally divided into a torque transmission driver and an axial force transmission driver, and when reactants need to be stirred in a rotating way and in an up-and-down way, the two magnetic drivers are usually required to be replaced for use, so that the manufacturing cost under the process conditions is high, and the production efficiency is low.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, this application provides a compound magnetic actuator.

The application discloses a compound magnetic actuator includes: the inner rotor is arranged on the inner side of the isolation sleeve, the outer rotor is arranged on the outer side of the isolation sleeve, the inner rotor is provided with a first body, a plurality of first torque magnetic steels, a plurality of first axial magnetic steels and a permanent magnet, a mounting groove is formed in the center of one end of the first body, the permanent magnet is mounted in the mounting groove, the plurality of first torque magnetic steels are arranged on the peripheral wall of the first body along the circumferential direction, the plurality of first torque magnetic steel magnetic poles are perpendicular to the peripheral wall of the first body, the directions of two adjacent first torque magnetic steel magnetic poles in the circumferential direction are opposite, the plurality of first axial magnetic steels are arranged on the peripheral wall of the first body along the axial direction, the directions of the first axial magnetic steel magnetic poles are perpendicular to the peripheral wall of the first body, the directions of two adjacent first axial magnetic steel magnetic poles in the axial direction are opposite, the outer rotor is provided with a second body, the plurality of second torque magnetic steels and a plurality of second axial magnetic steels, and the plurality of second torque magnetic steels are fixed on the peripheral wall of the second body, the plurality of second torque magnetic steels correspond to the plurality of first torque magnetic steels respectively and are arranged, the magnetic pole directions of the second torque magnetic steels are consistent with the corresponding first torque magnetic steels respectively, the plurality of second axial magnetic steels correspond to the plurality of first axial magnetic steels respectively and are arranged, and the magnetization directions of the second axial torque magnetic steels are consistent with the corresponding first axial magnetic steels respectively.

Preferably, a gap is formed between the inner rotor and the isolation sleeve, and a gap is formed between the outer rotor and the isolation sleeve.

Preferably, an inner cavity is formed in the first body, the first torque magnetic steel and the first axial magnetic steel are arranged in the inner cavity of the first body, an inner cavity is formed in the second body, and the second torque magnetic steel and the second axial magnetic steel are arranged in the inner cavity of the second body.

Preferably, the first torque magnetic steel and the first axial magnetic steel are arranged in a mutually-staggered manner.

Preferably, the number of the second torque magnetic steels is consistent with that of the first torque magnetic steels, and the number of the second axial magnetic steels is consistent with that of the first axial magnetic steels.

Preferably, first body, second body and spacer all adopt non-magnetic material, and first torque magnet steel, first axial magnet steel, second torque magnet steel and second axial magnet steel all adopt magnetic conduction carbon steel material, and the permanent magnet adopts rare earth neodymium iron boron or samarium cobalt material.

Preferably, the first body is provided with a driving device mounting groove, and the second body is provided with a driven device mounting groove.

Preferably, the second body is further provided with rotating speed induction magnetic steel.

Preferably, the insulating sleeve is U-shaped in cross-section.

Preferably, a sealing ring is arranged at the opening of the isolation sleeve.

The beneficial effect of this application lies in: when in use, the inner rotor is fixed on the driving device, the isolation sleeve is fixed on the reaction kettle and used for isolating the inner rotor from reactants, the permanent magnet is used for magnetizing the magnetic steel, the inner rotor starts to move along with the driving device, when the inner rotor moves radially, the axial magnetic steels of the inner rotor and the outer rotor are dislocated, the characteristics of the magnets are utilized to form a push-pull force in the axial direction, the outer rotor is pushed or pulled to move axially along with the inner rotor, the axial transmission of the driver is realized, when the inner rotor rotates, the torque magnetic steels on the inner rotor and the outer rotor are dislocated, thereby forming push-pull force in the rotating direction to drive the outer rotor to synchronously rotate along with the inner rotor, realizing the torque transmission of the driver, avoiding replacing a specific driver due to the change of the motion mode in the use process, under the condition of not needing other drivers, the rotary stirring can be finished, and the up-and-down stirring can be realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a composite magnetic actuator according to an embodiment;

FIG. 2 is a schematic view showing an arrangement of axial magnetic steels of the composite magnetic actuator according to the embodiment;

FIG. 3 is a schematic diagram showing an arrangement of torque magnets of the composite magnetic driver according to the embodiment;

FIG. 4 is a perspective view of the composite magnetic actuator according to the embodiment;

FIG. 5 is a schematic diagram illustrating a state of misalignment between the first torque magnetic steel and the second torque magnetic steel after the first body rotates in the embodiment;

fig. 6 is a schematic diagram illustrating a state of misalignment between the first axial magnetic steel and the second axial magnetic steel after the first body moves axially in the embodiment.

Reference numerals:

1-an inner rotor; 2-an outer rotor; 3-an isolation sleeve; 11-a first torque magnetic steel; 12-first axial magnetic steel; 13-mounting grooves; 14-a permanent magnet; 15-drive device mounting groove; 16-a first body; 21-second torque magnetic steel; 22-second axial magnetic steel; 23-rotating speed induction magnetic steel; 24-a slave mounting slot; 25-a second body; 31-a sealing ring;

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the application. That is, in some embodiments of the present application, such practical details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings for the sake of simplicity.

It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present application are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in this application are for descriptive purposes only, not specifically referring to the order or sequence, nor are they intended to limit the application, but merely to distinguish components or operations described in the same technical terms, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

For a further understanding of the content, nature and function of the present application, reference should be made to the following examples, which are set forth in the following detailed description and taken in conjunction with the accompanying drawings:

referring to fig. 1, fig. 1 is a schematic structural diagram of a composite magnetic actuator, the composite magnetic actuator in this embodiment includes an inner rotor 1, an outer rotor 2 and an isolation sleeve 3, the inner rotor 1 is disposed inside the isolation sleeve 3, the outer rotor is disposed outside the isolation sleeve 3, the inner rotor 1 is connected to a driving device as a driving shaft, the outer rotor 2 moves along with the inner rotor 1 as a driven shaft, the isolation sleeve 3 is fixed to a reaction kettle, and the isolation sleeve 3 is used for isolating a reactant from the inner rotor 1, so as to protect the driving device from being corroded by the reactant and protect the reactant from being polluted.

Referring back to fig. 1, the inner rotor 1 includes a first body 16, a plurality of first torque magnetic steels 11, a plurality of first axial magnetic steels 12 and a permanent magnet 14, the first body 16 is disposed on each of the plurality of first torque magnetic steels 11, the plurality of first axial magnetic steels 12 and the permanent magnet 14, the plurality of first torque magnetic steels 11 enable the inner rotor 1 to generate a rotational motion, the plurality of first axial magnetic steels 11 enable the inner rotor 1 to generate an axial motion, and the permanent magnet 14 is used for magnetizing the first torque magnetic steels 11 and the first axial magnetic steels 12.

Referring to fig. 2 and fig. 1 again, fig. 2 is a schematic diagram of an arrangement manner of the first torque magnetic steel 11 and the second torque magnetic steel row 21 in the embodiment. The plurality of first torque magnetic steels 11 are arranged on the peripheral wall of the first body 16 along the circumferential direction of the first body 16, and in the plurality of first torque magnetic steels 11, the magnetic pole of each first torque magnetic steel 11 is perpendicular to the peripheral wall of the first body 16, and the magnetic pole directions of two adjacent first torque magnetic steels 11 located in the same circumferential direction are opposite. As shown in fig. 2, in this embodiment, there are 6 first torque magnetic steels 11, 6 first torque magnetic steels 11 are arranged in sequence along the circumferential direction, the magnetic pole of each first torque magnetic steel 11 is perpendicular to the circumferential wall of the first body 16, and the magnetic poles of two adjacent first torque magnetic steels 11 are opposite in direction, it can be understood that the number of the first torque magnetic steels 11 may be set according to the actual situation, and the specific number is not limited in this embodiment.

Referring to fig. 3 and referring back to fig. 1, fig. 3 is a schematic diagram illustrating an arrangement manner of the first axial magnetic steel 12 and the second axial magnetic steel in the embodiment. The plurality of first axial magnetic steels 12 are arranged on the peripheral wall of the inner rotor 1 along the axial direction of the first body 16, the magnetic pole directions of the first axial magnetic steels 12 are perpendicular to the peripheral wall of the inner rotor 1, and the magnetic pole directions of two adjacent first axial magnetic steels 12 in the axial direction are opposite. That is to say, a plurality of first axial magnet steels 12 divide into two sets, and every first axial magnet steel 12 of group sets up around the circumference of first body 16, and two sets of first axial magnet steels 12 are parallel to each other and arrange along the axial to it is opposite to be located two adjacent first axial magnet steels 11 magnetic pole direction on same axial direction. As shown in fig. 3, in this example, there are 12 first axial magnetic steels 12, the 12 first axial magnetic steels 12 are divided into two groups, there are 6 first axial magnetic steels 12 in each group, the 6 first axial magnetic steels 12 in each group are arranged along the circumference of the first body 16, the two groups of first axial magnetic steels 12 are arranged along the axial direction in a one-to-one correspondence manner, and the magnetic poles of two adjacent first axial magnetic steels 12 in the same axial direction are opposite.

Referring to fig. 1, one end of the first body 16 is provided with a mounting groove 12, and in order to ensure uniformity of magnetization, the mounting groove is disposed on a central axis of the first body 16, and the permanent magnet 14 is mounted in the mounting groove 12.

Referring to fig. 1 again, the outer rotor 2 includes a second body 25, a plurality of second torque magnetic steels 21 and a plurality of second axial magnetic steels 22, the plurality of second torque magnetic steels 21 and the plurality of second axial magnetic steels 22 are all disposed on the second body 25, the plurality of second torque magnetic steels 21 are under the magnetic action of the plurality of first torque magnetic steels 11, so that the outer rotor 2 generates rotational motion, and the plurality of second axial magnetic steels 22 are under the magnetic action of the plurality of first axial magnetic steels 12, so that the outer rotor 2 generates axial motion.

Referring to fig. 1 and 2 again, the plurality of second torque magnetic steels 11 are arranged on the circumferential wall of the second body 25 along the circumferential direction of the second body 25, and in the plurality of second torque magnetic steels 21, the magnetic poles of each second torque magnetic steel 21 are perpendicular to the circumferential wall of the second body 25, and the magnetic poles of two adjacent second torque magnetic steels 21 located in the same circumferential direction are opposite in direction, and after the plurality of second torque magnetic steels are arranged on the second body 25, the plurality of second torque magnetic steels 21 and the plurality of first torque magnetic steels 11 are respectively in one-to-one correspondence. As shown in fig. 2, in this example, there are 6 second torque magnetic steels 21, the 6 second torque magnetic steels 21 are sequentially arranged along the circumferential direction, the magnetic pole of each second torque magnetic steel 21 is perpendicular to the circumferential wall of the second body 25, the magnetic pole directions of two adjacent second torque magnetic steels 21 are opposite, and each second torque magnetic steel 21 corresponds to one first torque magnetic steel 11, that is, the second torque magnetic steels 21 correspond to the first torque magnetic steels 11 one by one, and the magnetic pole directions of the first torque magnetic steel 11 and the second torque magnetic steel 11 corresponding to each other are also the same, it can be understood that the number of the second torque magnetic steels 21 may be set according to the number of the first torque magnetic steels 11, and the specific number is not limited in this example.

Referring to fig. 1 and 3 again, the plurality of second axial magnetic steels 12 are arranged on the peripheral wall of the outer rotor 1 along the axial direction of the second body 25, the magnetic poles of the second axial magnetic steels 12 are perpendicular to the peripheral wall of the outer rotor 1, and the magnetic poles of two adjacent second axial magnetic steels 12 in the axial direction are opposite. That is to say, a plurality of second axial magnet steel 22 divide into two sets ofly, and every group second moment of torsion magnet steel sets up around the circumference of second body 25, and two sets of second moment of torsion magnet steel 22 are parallel to each other and arrange along the axial to it is opposite to be located two adjacent second axial magnet steel 22 magnetic pole directions on same axial direction. As shown in fig. 3, in this example, there are 12 second axial magnetic steels 22, the 12 second axial magnetic steels 22 are divided into two groups, each group of second axial magnetic steels 22 has 6 second axial magnetic steels, the 6 second axial magnetic steels 22 in each group are arranged along the circumference of the second body 25, the two groups of second axial magnetic steels 22 are arranged in one-to-one correspondence along the axial direction, and the magnetic poles of two adjacent second axial magnetic steels 22 in the same axial direction are opposite. Moreover, each second axial magnetic steel 22 corresponds to one first axial magnetic steel 12, that is, the positions of the second axial magnetic steel 22 correspond to the positions of the first axial magnetic steel 12 one by one, and the magnetic pole directions of the first axial magnetic steel 12 and the second axial magnetic steel 22 corresponding to each other are also the same, it can be understood that the number of the second axial magnetic steels 22 can be set according to the first axial magnetic steel 12, and the specific number is not limited in this example.

Because like poles attract and opposite poles are arranged, the mutual acting force between the poles is used as a driving force or a pulling force to realize rotation. When the stirring needs to be rotated, the driving device drives the first body 16 to rotate, and the first torque magnetic steel 11 on the first body 16 rotates synchronously, as shown in fig. 5, fig. 5 is a schematic diagram of a dislocated state of the first torque magnetic steel and the second torque magnetic steel after the first body rotates. Because the first torque magnetic steel 11 and the first body 16 rotate synchronously, the second torque magnetic steel 21 on the second body 25 and the first torque magnetic steel 11 on the first body 16 are dislocated in the circumferential direction, the first torque magnetic steel 11 on the first body 16 and the two second torque magnetic steels 21 at adjacent positions on the second body 25 respectively generate a repulsive force F2 and an attractive force F1, and the attractive force F1 and the repulsive force F2 enable the second body 25 to generate a rotating force in the same direction as the first body 16, so that the outer rotor 2 rotates synchronously with the inner rotor 1, and the requirement of rotating and stirring is met.

Referring to fig. 6, fig. 6 is a schematic diagram illustrating a dislocated state of the first axial magnetic steel and the second axial magnetic steel after the first body moves axially. When up-and-down stirring is needed, the driving device drives the first body 16 to do axial linear motion, during the axial movement of the first body 16, the plurality of first axial magnetic steels 12 on the first body 16 move synchronously, the second axial magnetic steels 22 on the second body 25 are dislocated with the first axial magnetic steels 12 on the first body 16 in the axial direction, the first axial magnetic steels 11 on the first body 16 and two adjacent second axial magnetic steels on the second body 25 respectively generate attraction force F3 and repulsion force F4, and the attraction force F3 and the repulsion force F4 enable the second body 25 to generate axial force in the same direction as the first body 16, so that the outer rotor 2 moves synchronously and axially along with the inner rotor 1, and up-and-down stirring is realized.

Referring to fig. 4 and referring back to fig. 1, fig. 4 is a perspective view of the composite magnetic actuator, in order to reduce the resistance and wear caused by the relative movement friction between the inner rotor 1, the outer rotor 2 and the spacer sleeve 3, and at the same time, to prevent the leakage of the reactant, gaps are provided between the inner rotor 1 and the spacer sleeve 3, and between the spacer sleeve 3 and the outer rotor 2, that is, in a spaced and non-contact state. The section of the isolation sleeve 3 is U-shaped, so that the structure of the driver is more compact.

In order to facilitate the installation of the first torque magnetic steel 11 and the first axial magnetic steel 12, an inner cavity is arranged in the first body, the first torque magnetic steel 11 and the first axial magnetic steel 12 are arranged in the inner cavity, in order to facilitate the installation of the second torque magnetic steel 21 and the second axial magnetic steel 22, an inner cavity is arranged in the second body, the second torque magnetic steel 21 and the second axial magnetic steel 22 are arranged in the inner cavity, all the magnetic steels are fixedly connected to the first body 16 or the second body 25 in a welding mode, all the magnets are wrapped by stainless steel, all seams are welded in a laser continuous sealing mode and then polished, the surface roughness is less than 0.6, therefore, even if the isolating sleeve 3 is damaged carelessly and leaks, pollution cannot be generated, the inner rotor 1 or the outer rotor 3 cannot be damaged, a sealing ring 31 is arranged at the opening of the isolating sleeve 3, and the sealing performance of the driver is further guaranteed.

In order to generate the maximum transmission force by the arrangement mode and fully utilize the magnetic force of the limited magnetic steel, the composite torque magnetic steel adopts the non-staggered arrangement mode, namely, the first axial magnetic steel 12 does not exist between any two first torque magnetic steels 11 in the circumferential direction of the first body 16, and the first torque magnetic steel 11 does not exist between any two first axial magnetic steels 12 in the axial direction; similarly, there is no second axial magnetic steel 22 between any two second torque magnetic steels 11 in the circumferential direction of the second body 25, and there is no second torque magnetic steel 21 between any two second axial magnetic steels 22 in the axial direction; the number of the second torque magnetic steels 21 is consistent with that of the first torque magnetic steels 11, and the number of the second axial magnetic steels 22 is consistent with that of the first axial magnetic steels 12.

First body 16, second body 25 and spacer 3 all adopt non-magnetic material, reducible interference to the magnet steel magnetism, first torque magnet steel 11, first axial magnet steel 12, second torque magnet steel 21 and second axial magnet steel 22 all adopt magnetic conduction carbon steel material, can make the magnet have good penetrating effect in the magnet steel, permanent magnet 14 adopts rare earth neodymium iron boron or samarium cobalt material, relative ordinary magnet, the precision is high, magnetic performance is splendid, corrosion resistance is good, temperature stability is good, the biggest magnetic deposit ability is high.

Still be equipped with drive arrangement mounting groove 15 on the first body 16, be equipped with slave unit mounting groove 24 on the second body 25, can directly install drive arrangement and slave unit respectively in drive arrangement mounting groove 15 and slave unit mounting groove 24, need not other accessories and can install it, drive arrangement is used for driving the driver, and the slave unit is used for stirring the reactant.

The outer rotor 2 is also provided with rotating speed induction magnetic steel 23 which is matched with a magnetic switch to directly obtain the rotating speed or the linear motion speed of the outer rotor 2 without independently measuring the speed.

To sum up, in the composite magnetic driver in this embodiment, when in use, the driving device is fixed to the first body through the driving device mounting groove, the driven device is fixed to the second body through the driven device mounting groove, the isolation sleeve 3 is fixed to the reaction kettle, when the driving device works to drive the inner rotor to move axially, the inner rotor starts to move axially along with the driving device, when the inner rotor moves axially, the first axial magnetic steel and the second axial magnetic steel are dislocated, and by utilizing the characteristics of the magnets, an axial push-pull force is formed to push or pull the outer rotor to move axially along with the inner rotor synchronously, so as to realize axial transmission of the driver, when the inner rotor rotates, the first torque magnetic steel and the second torque magnetic steel are dislocated, so as to form a push-pull force in a rotation direction, so as to promote the outer rotor to rotate synchronously, so as to realize torque transmission of the driver, and a specific driver does not need to be replaced due to a change of a movement mode in a use process, under the condition of not needing other drivers, the rotary stirring can be finished, and the up-and-down stirring can be realized.

The above are merely embodiments of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims (10)

1. A compound magnetic actuator, comprising: the rotor comprises an inner rotor (1), an outer rotor (2) and an isolation sleeve (3), wherein the inner rotor (1) is arranged in the isolation sleeve (3), and the outer rotor (2) is arranged outside the isolation sleeve (3); the inner rotor (1) comprises a first body (16), a plurality of first torque magnetic steels (11), a plurality of first axial magnetic steels (12) and a permanent magnet (14), wherein one end of the first body (16) is provided with a mounting groove (13), the permanent magnet (14) is arranged in the mounting groove (13), the first torque magnetic steels (11) are arranged on the peripheral wall of the first body (16) along the circumferential direction, each magnetic pole of the first torque magnetic steel (11) is perpendicular to the peripheral wall of the first body (16), the magnetic poles of the first torque magnetic steels (11) adjacent to each other in the circumferential direction are opposite in direction, the first axial magnetic steels (12) are arranged on the peripheral wall of the first body (16) along the axial direction, the magnetic poles of the first axial magnetic steels (12) are perpendicular to the peripheral wall of the first body (16), and the magnetic poles of the first axial magnetic steels (12) adjacent to each other in the axial direction are opposite in direction, the outer rotor (2) comprises a second body (25), a plurality of second torque magnetic steels (21) and a plurality of second axial magnetic steels (22), the second torque magnetic steels (21) and the second axial magnetic steels (22) are fixed on the peripheral wall of the outer rotor (2), the second torque magnetic steels (21) are respectively arranged corresponding to the first torque magnetic steels (11), the magnetic pole directions of the second torque magnetic steels (21) are respectively consistent with the corresponding first torque magnetic steels (11), the second axial magnetic steels (22) are respectively arranged corresponding to the first axial magnetic steels, and the magnetic pole directions of the second axial magnetic steels (22) are respectively consistent with the corresponding first axial magnetic steels (12).

2. A compound magnetic actuator according to claim 1, characterized in that there is a gap between the inner rotor (1) and the spacer sleeve (3) and a gap between the outer rotor (2) and the spacer sleeve.

3. A compound magnetic actuator according to claim 1, characterized in that said first body (16) has an internal cavity, said first torque magnetic steel (11) and first axial magnetic steel (12) being placed in the internal cavity of said first body (16); the second body (25) is provided with an inner cavity, and the second torque magnetic steel (21) and the second axial magnetic steel (22) are arranged in the inner cavity of the second body (25).

4. A compound magnetic actuator according to claim 1, characterized in that said first torque magnetic steel (11) and said first axial magnetic steel (12) are arranged without being crossed.

5. A compound magnetic actuator according to claim 1, characterized in that said second torque magnets (21) are in the same number as said first torque magnets (11), and said second axial magnets (22) are in the same number as said first axial magnets (12).

6. A compound magnetic actuator according to claim 1, characterized in that the first body (16), the second body (25) and the spacer sleeve (3) are all made of non-magnetic material, the first torque magnetic steel (11), the first axial magnetic steel (12), the second torque magnetic steel (21) and the second axial magnetic steel (22) are all made of magnetically conductive carbon steel material, and the permanent magnet (14) is made of rare earth neodymium iron boron or samarium cobalt material.

7. A compound magnetic driver according to claim 1, characterized in that the first body (16) is provided with a driving means mounting groove (15) and the second body (25) is provided with a driven means mounting groove (24).

8. A compound magnetic actuator according to claim 1, characterized in that said second body (25) is further provided with a rotation speed induction magnetic steel (23).

9. A compound magnetic actuator according to claim 1, characterized in that the spacer sleeve (3) is U-shaped in cross-section.

10. A compound magnetic actuator according to claim 9, characterized in that a sealing ring (31) is provided at the opening of the spacer sleeve (3).

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