73 results about "Magnet device" patented technology

The invention discloses an internally-inserted water-cooled magnet device for a high-field hybrid magnet. The internally-inserted water-cooled magnet device comprises a container assembly and a magnet coil assembly arranged in the container assembly. The container assembly comprises an upper barrel assembly, a container end cover, a hydraulic machine assembly, a center pipe assembly, an inner supporting assembly, a middle barrel assembly, a lower barrel assembly and an electric connecting assembly. The hydraulic machine assembly comprises a cylinder body, a piston, a check ring, a pressure equalizing pad, a first force transmission check ring, a first anti-rotation pin, a second force transmission check ring, a second anti-rotation pin, a first force transmission column and a second force transmission column. The axial force application device has the advantages that axial force application can be performed on the magnet coil assembly, the pressing force on the magnet coil assembly is improved, and the problems of tension fracture and damage caused by coil stress overrun due to overlarge radial expansion electromagnetic force of a magnet coil bit piece and an insulating piece are solved.

The invention discloses a novel water-cooled magnet coil end electromagnetic force control structure which comprises a coil A, a coil B, a coil C, a coil D, a coil E and a coil F. The coil A, the coil B, the coil C, the coil D, the coil E and the coil F are sequentially connected in series in a sleeving mode in the radial direction. The F coil comprises an F magnet coil, an F coil end plate, an F fixing rod, an F transition electric connecting ring, an F lower insulation supporting anti-rotation cylinder and a reinforcing rod. The coil assembly has the advantages that through the arrangement of the sectional insulating cylinder assembly, the insulating effect is achieved, the coil A is positioned instead of a fixing rod, the stability of the two ends of the F magnet coil is enhanced, the problems of movement and dislocation near an end plate during operation of the F coil are solved, and the service life of the F coil is prolonged. And the F transition electric connecting ring is prevented from being damaged under the condition of sudden power failure during operation of the mixed interpolation water-cooling magnet device.

The invention belongs to the technical field of synchrotron radiation light sources, and discloses a serial impact magnet device which comprises a shell assembly, a positive pulse electrode, a negative pulse electrode and a strip magnet. The shell assembly comprises a shell body and a side end cover which are detachably connected, and a magnetic core space is formed between the shell body and the side end cover. The positive pulse electrodes extend into the magnetic core space and are arranged at intervals. The negative pulse electrodes extend into the magnetic core space and are arranged opposite to the positive pulse electrodes, and the multiple negative pulse electrodes are arranged at intervals. The strip magnets are arranged in the magnetic core space, the strip magnets are connected between every two adjacent positive pulse electrodes, the strip magnets are connected between every two adjacent negative pulse electrodes, and the two strip magnets are spaced from each other to form a magnetic field space. The electron beam current can be transmitted in the magnetic field space. The tandem impact magnet device can improve the compact degree and the vacuum degree, facilitates the assembly of an internal structure, and can meet the injection requirements of electron beams of a synchrotron radiation light source.

The invention discloses a folding screen and electronic equipment, and relates to the technical field of electronics, the folding screen comprises two screen bodies, and the two screen bodies can rotate relative to each other to enable the folding screen to be in a cover opening state or a cover closing state; a first magnet device is installed in one screen body, a second magnet device is installed in the other screen body, the first magnet device comprises a first magnet and a reset structure, and the first magnet is rotatably installed in the corresponding screen body; the second magnet device comprises a second magnet; under the condition that the folding screen is in a cover closing state, the second magnet and the first magnet attract each other, so that the magnetic pole distribution direction of the first magnet is changed from the first direction to the second direction; when the folding screen is in the uncovering state, the reset structure drives the first magnet to rotate, so that the magnetic pole distribution direction of the first magnet is changed from the second direction to the first direction, and the magnetic force of the screen body surface where the first magnet is located is reduced. The risk that the screen is extruded by ferromagnetic foreign matter can be eliminated, and color bright spots or black balls are prevented from appearing on the screen.

The invention belongs to the technical field of hydrogen production, and particularly relates to a hydrogen production electrode automatic transfer clamp which comprises a rack, a flange plate is fixedly connected to the top of the rack, sliding mechanisms are installed on the four sides of the outer wall of the rack, and suction clamping mechanisms are connected to the sliding mechanisms and used for sucking and clamping electrodes. The six electric permanent magnetic devices are uniformly mounted at the bottom of the rack and are used for adsorbing the electrodes so as to improve the stability of the electrodes; and the eight leveling mechanisms are uniformly distributed on the upper side of the rack. Through cooperation of the sucking and clamping mechanism and the electric permanent magnetic device, the problems of separate grabbing of stacked electrodes and stable grabbing of a single electrode are successfully solved, automation of hydrogen production electrode transfer is achieved, traditional manual operation is replaced, instability of manual operation is avoided, and the production efficiency is remarkably improved.

The utility model relates to a dot matrix scanning type focused ultrasound beauty instrument which comprises a shell, a main control board, a swing arm, a magnet device and a focused ultrasound transducer installed at the follow-up end of the swing arm are arranged in the shell. A rotary mounting part is arranged in the middle of the swinging arm, one side of the rotary mounting part is a driving end, and the other side is a follow-up end; the driving end is provided with a coil claw, and a driving coil is installed in the coil claw. The follow-up end extends outwards to form a mounting seat, and a focused ultrasonic transducer is mounted on the mounting seat; the magnet device comprises a base and a shielding cover; a bottom driving magnet is fixed on the inner side of the base, a top driving magnet is fixed on the inner side of the shielding cover, the bottom driving magnet and the top driving magnet are arranged at an interval, and a part of the driving coil is located in a channel between the bottom driving magnet and the top driving magnet; and the rotary mounting part of the swinging arm is rotationally connected with the base of the magnet device. According to the utility model, pulse output and accurate positioning scanning of focused ultrasound are realized, and the use effect is improved.

The invention relates to a device (100) comprising a magnetorheological transmission device (1) having two rotating parts (2, 3) which can be moved relative to each other. A working gap (4) having a magnetorheological medium (5) is formed between the rotating parts (2, 3). An electrical coil arrangement (6) is used to generate a controllable magnetic field in the working gap (4). The additional brake (7) is used to brake the rotational ability of the rotating members (2, 3) when the magnetic field of the coil mechanism (6) disappears. The additional brake (7) comprises a magnet device (17) extending in the circumferential direction of the working gap (4), which magnet device comprises at least one magnet unit (27) having at least one permanent magnet (37) extending only over a part of the circumference.

The present disclosure relates to bitter plate-based magnet devices and a reactor apparatus using same. The reactor apparatus may comprise the magnet devices. The magnet device may comprise: an upper lead plate; a plurality of conductor plates; a plurality of insulator plates; and a lower lead plate. The magnet device can be formed to have a central hole. The conductor plates and the insulator plates can be stacked such that each insulator plate is disposed between two conductor plates. Each conductor plate can be formed to have a radial slot, and each insulator plate can be formed to have a radial slot that is wider in width in the circumferential direction than the radial slot of the conductor plate. According to the present disclosure, a bitter plate-based reactor apparatus is implemented such that high current density can be achieved and a miniaturized reactor can be fabricated.

The invention relates to a method for producing value documents (1), such as banknotes, checks, credit cards or other payment cards, identity cards or the like. A substrate body (2) having a front side (3) and a rear side (4) is provided, and a printing layer (6) is printed onto the front side (3) of the substrate body (2) using a first ink (5) and a second ink (15). The magnetically orientable pigment is orientated using a magnet device (11), and then the magnetically orientable pigment is fixed by a curing matrix in the orientated state using a curing device (13). At least the first ink (5) is printed in a digital printing process by means of a first print head (7) which releases the first ink (5) in a dot grid in the form of drops such that the printed layer (6) forms a digital printed layer at least with respect to the first ink (5), the first ink (5) and the second ink (15) having two different colors, and the magnetically orientable pigments each comprise a multi-layer composite structure comprising at least a magnetic layer.

The invention relates to a magnet device (11) for a magnetic resonance apparatus (10), the magnet device (11) comprising: a superconducting magnet (12); a discharge system (35); a switch (37) which is designed to interrupt a closed circuit in the superconducting magnet (12) and to transfer electrical energy which has accumulated in the superconducting magnet (12) to the discharge system (35); wherein the discharge system (35) comprises a supercapacitor (30) which is designed to buffer the electrical energy transport from the superconducting magnet (12) to the discharge element in the discharge system (35).

The invention relates to the technical field of high-pressure valves, in particular to a low-power-consumption bistable electromagnetic actuator for a valve, which comprises a casing main body for accommodating other parts of the electromagnetic actuator, introducing a control wire and allowing an output component to penetrate out; the stator assembly comprises annular coil devices which are symmetrically arranged in the axial direction and generate armature magnetic flux to control an output component to move transversely, and control wiring to control the time sequence of the armature magnetic flux generated by the coil devices. The middle iron core assembly comprises a permanent magnet device capable of generating permanent magnetic flux, and the permanent magnet device is located in the symmetrical middle of the symmetrically-arranged annular coil device and used for conducting electromagnetic fixing on the output component after transverse movement is finished. The armature assembly is used for driving the output component to retract into or penetrate out of the machine shell body under the action of armature magnetic flux to execute valve switch control action, and the armature assembly is arranged in the stator assembly and penetrates through the middle iron core assembly. According to the invention, a novel composite magnetic circuit under the dual action of a constant magnetic source and an electromagnetic field is constructed, so that bidirectional active switching between steady-state positions is realized.

A closure arrangement (1) comprises a first closure part (2), which has a first body (20), an engagement device (21), which is arranged on the first body (20), and a first magnet device (22), and also comprises a second closure part (3), which has a second body (30), a locking element (33) and a second magnet device (32). The first closure part (2) and the second closure part (3) can be placed against one another for the purpose of closing the closure arrangement (1) and, in a closed position, are held against one another by the locking element (33) engaging with the engagement device (21). The second closure part (3) has a connecting element (31), which is movably arranged on the second body (30) and on which the locking element (33) is arranged, wherein the connecting element (31) has at least one bearing portion (330), which is mounted on the second body (30) such that, when the first closure part (2) and the second closure part (3) are placed against one another for the purpose of closing the closure arrangement (1), the connecting element (31) can be moved on the second body (30), and the connecting element (31) can additionally be pivoted relative to the second body (30) in order to disengage the locking element (33) from the engagement device (21) for the purpose of opening the closure arrangement (1).

An electromagnet device includes a coil, a spool, a first coil terminal, a second coil terminal, and a third coil terminal. The spool includes a body portion around which the coil is wound, and a flange portion. The first coil terminal includes a first tying portion extending from the flange portion in an axial direction of the body portion. The second coil terminal includes a second tying portion extending from the flange portion in the axial direction. The third coil terminal is disposed between the first and second coil terminals and includes a third tying portion including a base end portion and a distal portion extending from the base end portion in a direction approaching the second tying portion. The base end portion is disposed eccentrically relative to an axis of the body end portion in a direction from the second coil terminal toward the first coil terminal.

The invention discloses a blood cell separation magnet device and method, and belongs to the technical field of cell separation. The magnet device comprises a plurality of pole heads which are symmetrically arranged, and runway coils are arranged outside the pole heads; the central axis position of a gap defined by the runway coils is a working area, the working area is a uniform magnetic field capturing area, and magnetized target cells in blood cells are stably separated by using a uniform magnetic field; the width of the working area ranges from 8 mm to 15 mm, and the length of the working area ranges from 200 mm to 500 mm. Through cooperation of the runway coil and the pole head, a linear or planar working area which is small in space body, high in strength, large in gradient and uniform in magnetic field distribution is formed, and compared with an existing point-shaped or small-area high gradient, magnetized cells flowing through a sample in the area can be captured more efficiently and more thoroughly, and the recovery rate and the purity are remarkably improved.

The utility model discloses a magnet device for magnetron sputtering coating, which belongs to the technical field of magnetron sputtering coating, and comprises a back plate, a magnetic bar base and magnetic bars, the magnetic bar base is connected onto the back plate through a plurality of adjusting bolts, the magnetic bar base is provided with three horizontal clamping grooves for correspondingly placing the magnetic bars, the magnetic bars comprise square tubes, and the square tubes are arranged in the clamping grooves. The magnets are arranged in the square tubes, and the magnetic poles of the magnets arranged in the adjacent square tubes face opposite directions. A fixing position is provided through the effect of the back plate, the generated peripheral magnetic field intensity is changed by adjusting the distance between the magnetic rod base and the back plate, the collision ionization effect is changed, the thickness of the film layer is adjusted accordingly, and the production application range is wide; the magnet device adopts the stainless steel square tube to package the magnet, effectively prevents the magnet assembly from being damped and corroded, ensures the position stability of the magnet, avoids the influence of position change on the magnetic field effect, and improves the stability and reliability of the device; and the magnet is convenient to disassemble and assemble and can be reused, so that the production cost is reduced.

The invention provides a point contact measuring rod adaptive to a water-cooled magnet, and relates to the technical field of low-temperature measurement. The point contact measuring rod adapted to the water-cooled magnet comprises a measuring head provided with a driving assembly, and the driving assembly is used for driving a sample to be measured and / or a probe to move at least in a three-dimensional space. The point contact measuring rod can be matched with a water-cooled magnet device to measure the superconducting energy gap of a superconducting material, the contact position between the tip of the metal probe and a sample can be changed through movement of the driving assembly, measurement of multiple positions of the same sample can be achieved without frequent insertion and extraction of the measuring rod, and the problems that the probe insertion distance is uncontrollable, and the measurement accuracy is high are solved. Tunnel junction control is unstable, and single measurement contact position is single.

Embodiments disclosed in the specification and drawings relate to a superconducting magnet device and a magnetic resonance imaging device. One of the issues to be solved by the embodiment is to efficiently cool a plurality of structures to be cooled while reducing the amount of refrigerant. A superconducting magnet device according to an embodiment includes a superconducting coil, a structure, a refrigerant tank, a heat exchanger, a refrigerator, a solid heat conductor, and a vacuum container. The superconducting coil is composed of a superconducting wire forming a magnetic field. The structure is composed of a superconductor and is electrically connected to the superconducting coil. The refrigerant tank stores a refrigerant. The heat exchanger is exposed to the inside of the refrigerant tank. And the refrigerating machine is used for cooling the refrigerant. The solid heat conductor connects the refrigerant tank with the superconducting coil and the structure directly or indirectly in a heat-conducting manner. The superconducting coil or the structure is configured using at least two structures having different operating temperatures or superconducting characteristics as superconductors.

The present invention relates to an electric drive device (1) for moving at least one optical element (2) along the optical axis (3) of a lens. The electric drive device has a statically constructed magnet device (9) as a primary component and a coil-actuator (7, 4) axially movable around the optical axis (3) as a secondary component. The magnet device (9) consists of a plurality of flat magnets (13) symmetrically and uniformly distributed around the periphery, and the coil device (7) consists of a hollow coil body (7) with a polygonal cross-section, the coil body having a plurality of flat, identical surfaces. Section; one or more conductors, which are circumferentially mounted on the surface section in the form of multiple parallel turns of wire at the outer periphery of the coil body (7), and at least one optical element (2) is supported in an actuator (4) arranged within the coil body (7), wherein the number of flat magnets (13) corresponds to the number of surface sections, the edge length (L) of the flat magnets (13) is adapted to the side leg length of the lateral surface section of the coil body (7), and the actuator (4) arranged within the coil body (7) has a connecting element (6) connected to the coil body (7) in the radial direction.

The invention relates to a cerium-lanthanum co-doped and aluminum-introduced modified permanent magnetic strontium ferrite material as well as a preparation method and application thereof, and belongs to the technical field of ferrite permanent magnetic materials. The preparation method comprises the following steps: adding Al2O3 in an amount which is 0.1-0.9 wt% of the theoretical amount of Fe2O3, and replacing Fe2O3 in an equimolar manner, so that the total mole number of cations is kept unchanged, and finally obtaining a stoichiometric formula: Sr < 0.41 > Ce < 0.175 > La < 0.185 > Ca < 0.23 > Fe < 11.8-x > Al < x > Co < 0.2 > O < 19 >. The preparation method comprises the following steps: carrying out ball-milling mixing on rare earth oxide, strontium carbonate, ferric oxide, cobalt oxide, calcium carbonate and aluminum oxide which is added in proportion, drying, pre-sintering, molding, and sintering at high temperature to obtain the permanent magnetic strontium ferrite material. Rare earth is synergistically doped and Al < 3 + > is equimolar to replace Fe < 3 + >, so that lattice distortion is inhibited, a crystal structure is optimized, and meanwhile, the coercive force and the magnetic energy product of the material are effectively improved. The prepared sample has excellent magnetic performance and thermal stability, and is suitable for the high-performance fields of motors, magnetic sensors, permanent magnet devices and the like.

A permanent fluidic magnet device includes a carrier fluid, and a plurality of non-Brownian nanomagnets disposed within the carrier fluid in a three-dimensional (3D) oriented and ramified magnetic (ORM) network structure. The permanent fluidic magnet device can be utilized in a system for detecting biomechanical signals from a subject, for example, cardiac signals, acoustic signals, etc. The permanent fluidic magnet device can also be implemented in a liquid robot system where the permanent fluidic magnet device can be actuated by an external magnetic field.

This invention discloses a method and system for optimizing the magnetic field of a counterpolar high-temperature superconducting magnet device, relating to the field of induction heating technology. The method includes: acquiring induction heating characteristic numbers of the counterpolar high-temperature superconducting magnet device to be optimized; determining the type of the counterpolar high-temperature superconducting magnet device based on the induction heating characteristic numbers, and determining the core topology and optimization parameter set within the counterpolar high-temperature superconducting magnet device based on the type of the device; and determining the target parameter combination for magnetic field optimization from the optimization parameter set according to preset rules, using the temperature distribution of the counterpolar high-temperature superconducting magnet device after heating as the optimization objective. This invention solves the problems of poor adaptability, low magnetic field control precision, and low efficiency of multi-parameter optimization in existing technologies for optimizing the magnetic field of counterpolar high-temperature superconducting magnet devices.

The invention relates to the cross technical field of computational electromagnetism and precision permanent magnet device design, in particular to a method for improving the nonuniformity of a magnetic disk space magnetic field, and aims to solve the problems that a method for improving the uniformity of a magnetic field in the prior art is low in optimization efficiency and difficult to break through the uniformity bottleneck caused by angular harmonic waves and a structural coupling effect. According to the scheme, the method comprises the steps that an accurate finite element model containing seven circles of fan-shaped magnets, a parallel magnetic disk, an eddy current disk and an iron support is established in Opera3D, and meshing and solving are carried out; in the first stage, the structural height of the iron stand is optimized through parameterized scanning, and the optimal height parameter is determined; and in the second stage, on the basis of the optimal iron stand height, the outermost two circles of the magnetic disk are set as NdFeB. The non-uniformity deviation (delta B) of the magnetic field of the target spherical area can be reduced by 13%, and the method is suitable for high-precision scenes such as nuclear magnetic resonance and synchrotron radiation light sources and has the advantages of being efficient in design and high in repeatability.

Connection arrangement for mounting a luminaire (1) on a building (2) comprising a base element (4, 24, 25) attached to the building and a connection body (5, 26) connectable to the base element (4, 24, 25), wherein the base element (4, 24, 25) and the connection body (5, 26) each have a complementary magnet arrangement (11, 12) which are located in the base element (4, 24, 25) and the connection body (5, 26), respectively.The connecting body (5, 26) is arranged such that the connecting body (5, 26) is held on the base element (4, 24, 25) by magnetic force, characterized in that the magnet arrangements (11, 12) of the base element (4, 24, 25) and connecting body (5, 26) each have at least two magnetic tracks (14, 15, 16, 17, 29, 30, 31, 32, 33, 34), wherein the first magnetic track (14, 15, 16, 17, 29, 30, 31, 32, 33, 34) is in a radially outer position relative to the second magnetic track (14, 15, 16, 17, 29, 30, 31, 32, 33, 34) and wherein the magnetization direction of the first magnetic track (14, 15, 16, 17, 29, 30, 31, 32, 33, 34) to the second magnetic track (14, 15, 16, 17, 29, 30, 31, 32, 33, 34) opposite.

The invention relates to a cryogenic system and a magnetic resonance apparatus. The invention relates to a cryogenic system for a magnetic resonance apparatus, the cryogenic system comprising a magnet arrangement comprising at least one superconducting magnet, a first cryogenic cooler thermally connected to the at least one superconducting magnet, a switching device, and a second cryogenic cooler configured to cool components of the magnet arrangement according to the switching device, the switching device is configured to enable cooling of the component of the magnet device via the second cryocooler when the temperature of the component of the magnet device exceeds a predefined temperature level, and to disable cooling of the component of the magnet device via the second cryocooler when the temperature of the component of the magnet device is below the predefined temperature level. The invention also relates to a magnetic resonance apparatus comprising the cryogenic system of the invention.

The invention relates to a magnet assembly for an audio speaker. The magnet assembly includes a magnet arrangement including a through hole and a light guide. The light guide is configured to guide light through the through hole of the magnet device. The light guide includes a first portion having a cylindrical shape with a longitudinal axis. The first portion has a light receiving end face and is configured to be inserted into the through hole of the magnet device in the direction of the longitudinal axis. The light guide includes a second portion for emitting light received at the light receiving end face. The light guide includes a first protrusion protruding perpendicular to the longitudinal axis from a side surface of the first portion. The first protrusion acts as a support structure against an edge of the through hole when the light guide is inserted into the through hole. The light guide includes at least one second protrusion protruding from a side surface of the first portion perpendicular to the longitudinal axis. The at least one second protrusion is disposed between the first protrusion and the light receiving end face. The at least one second protrusion is dimensioned to provide an interference fit of the first portion within the through hole of the magnet device.

The invention belongs to the technical field of magnetron sputtering, and provides an energy source position adjusting device, a magnet device and a magnetron sputtering device.The energy source position adjusting device comprises a first transmission mechanism, a second transmission mechanism, a third transmission mechanism and a fourth transmission mechanism; the second transmission mechanism, the third transmission mechanism and the fourth transmission mechanism are rotationally connected in sequence; when the first transmission mechanism rotates in the other direction, the first transmission mechanism is rotatably connected with the fourth transmission mechanism through the third transmission mechanism; the fourth transmission mechanism is connected with the energy source and converts rotation of the first transmission mechanism into linear motion to adjust the position of the energy source. According to the invention, the magnetic field can be adjusted in magnetron sputtering film deposition, so that the thickness of the sputtered film is more uniform.

The utility model relates to an automobile charging port rotating shaft magnet mounting device which structurally comprises a rotating shaft feeding mechanism, a magnet feeding mechanism, a rotating shaft moving mechanism, a rotating shaft transfer mechanism, a magnet press mounting mechanism, a magnet heating and fixing mechanism and a discharging mechanism which are mounted on a rack. Wherein the magnet feeding mechanism, the magnet press-fitting mechanism and the magnet heating and fixing mechanism are arranged above the rotating shaft transfer mechanism, the rotating shaft moving mechanism and the discharging mechanism are arranged on the side face of one end of the rotating shaft transfer mechanism, and the rotating shaft feeding mechanism is arranged on one side of the rotating shaft moving mechanism. The automatic feeding device has the advantages that the structural design is reasonable, automatic feeding of the rotating shaft and the magnet is achieved, the rotating shaft and the magnet are automatically installed and effectively fixed, the production efficiency can be effectively improved, and the production quality stability is guaranteed.

The utility model relates to the technical field of road maintenance devices, in particular to an iron attracting device and an iron attracting vehicle. The iron attracting device comprises a lifting mechanism, a bearing mechanism, a transmission mechanism and a magnet assembly, the lifting mechanism is used for being connected with the iron attracting vehicle, the bearing mechanism is connected with the lifting mechanism, the transmission mechanism is installed on the bearing mechanism, and the magnet assembly is fixedly arranged on the bearing mechanism; the transmission mechanism comprises a transmission track, the transmission track is provided with a first surface close to the ground and a second surface away from the ground, the magnet assembly comprises a main magnet, and the main magnet is arranged in the transmission track and close to the first surface. The magnet device provided by the utility model can cover the cleaning range of a single lane, and iron garbage can be comprehensively removed.

The utility model relates to the technical field of warm paste production, and discloses a magnet pasting device for a warm paste. Comprising a bottom plate and further comprises a supporting table arranged at the top of the bottom plate, a driving mechanism is arranged at the top of the bottom plate, a conveying belt used for conveying magnets is arranged at the top of the bottom plate, a lifting mechanism is arranged at the top of the supporting table, and a mounting mechanism is arranged at the top of the bottom plate; according to the utility model, the main body mechanism and the positioning mechanism are arranged, so that the heating patch body can be conveniently positioned, and the magnets can be ensured to be positioned at the optimal position of the heating patch through accurate positioning, so that the magnetic therapy effect can be maximized, and meanwhile, the heating patch which is accurately positioned is not easy to fall off or shift in the use process; the trouble that a user needs to continuously adjust the position of the warm paste in the using process is reduced, using convenience and comfort are improved, and the warm paste is particularly important for the user needing specific magnetic therapy parts.

Disclosed is a particle optical device that provides a primary particle optical beam path for a plurality of first individual particle beams emanating from a multi-beam particle generator and directed to an object positionable in an object plane of the device, and a secondary particle optical beam path for a plurality of second individual particle beams emanating from the multi-beam particle generator and directed to an object positionable in an object plane of the device. The secondary particle optical beam path is for a plurality of second individual particle beams emanating from the object. The particle optical device has a magnet device having a first magnetic field region through which the primary particle optical beam path and the second particle optical beam path pass for separating the primary particle optical beam path and the secondary particle optical beam path from each other. The magnet arrangement further has a second magnetic field region which is arranged in the primary particle optical beam path and is not arranged in the secondary particle optical beam path, the second magnetic field region being arranged upstream of the first magnetic field region with respect to the primary particle optical beam path, and the first magnetic field region and the second magnetic field region deflect the primary particle optical beam path in different directions. The emission inclination angle sigma1 of the first magnetic field region is not equal to 0 DEG, where the emission inclination angle sigma1 is defined as an angle at which the alignment direction of the emission region deviates from the normal to the particle optical axis Z of the primary particle optical beam path.