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45results about How to "Adjust the magnetic field strength" patented technology
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Preparation method of flexible anisotropy bonding rare earth permanent magnet material
InactiveCN101800106AAbundant resourcesReduce manufacturing costInorganic material magnetismInductances/transformers/magnets manufactureMagnetizationRare earth
The invention discloses a preparation method of flexible anisotropy bonding rare earth permanent magnet material, belonging to the field of magnetic materials. The material is prepared by combining the two-step approach accompanying temperature magnetic field orientation technology of which the calendaring process and the accompanying temperature magnetic field orientation process are separated. A certain quantity of anisotropy magnetic powder which is performed with surface treatment by the processing agent in advance, binder and processing agent are evenly mixed; the mixed material is calendered into flaky flexible bonding magnetic body by the calendaring technology; then, the flaky flexible bonding magnetic body is cut into parts which are heated at certain temperature under the condition of heat preservation for certain time, after that, the obtained product is put into an orientation magnetic field for accompanying temperature magnetic field orientation; and the direction of the orientation magnetic field is parallel to the plane normal direction of the flaky flexible bonding magnetic body. In the preparation technology, magnetic powder can overcome the constraint of a bonding system and rotates under the action of magnetic field force to ensure that the direction of easy magnetization of the magnetic powder generally points to the orientation direction, and the magnetic property of prepared flexible anisotropy bonding rare earth permanent magnet material can be greatly improved.
Owner:UNIV OF SCI & TECH BEIJING
In-well drill-following navigation method based on magnetic detection
InactiveCN103696753AReduce loss and timeIncreased navigation rangeConstructionsAutomatic control for drillingPhysicsDrill bit
The invention relates to an in-well drill-following navigation method based on magnetic detection. The method comprises the following steps: firstly, fixing and putting a magnetic vector detector and a drill bit into the bottom of a detected well, and putting an artificial magnetic source into the bottom of a target well; powering on the artificial magnetic source to generate an induced magnetic field, and adjusting the current to enable the magnetic vector detector in the detected well to receive a magnetic sensing signal; transmitting the received signal to a ground computer through the detector, calculating the distance, the horizontal deflection and the vertical deflection of the drill bit relative to the artificial magnetic source under a spherical coordinate system through the computer according to the magnetic sensing strength, drawing a planar projection drawing of the drill bit, and displaying central deviation; and furthermore adjusting the drilling direction of the drill bit according to the deviation and the angle so as to enable the drill bit to move forwards to the artificial magnetic source. The deviation and the angle are measured and calculated every 2-10 minutes in the drilling process, and the direction of the drill bit is adjusted at any time so as to ultimately communicate a horizontal well with a vertical well. Due to adoption of the artificial magnetic source, the method is large in navigation distance, simple in calculation method and high in precision, and the direction can be measured along with drilling.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)
Coil supporting device and plasma processing equipment
ActiveCN104299870AEliminate installation errorsEliminate machining errorsElectric discharge tubesRadio frequencyPlasma processing
The invention relates to a coil supporting device and plasma processing equipment. The coil supporting device is used for supporting a coil arranged above the top part of a reaction chamber. The coil supporting device comprises a shielding cover, a coil support and an elevating driving mechanism. The shielding cover is fixed at the top part of the reaction chamber. The coil and the coil support used for fixing the coil are arranged in the internal part of the shielding cover. The elevating driving mechanism is fixed above the top part of the shielding cover and used for driving the coil support and the coil fixedly connected with the coil support to move in an elevating way relative to the reaction chamber. According to the coil supporting device, height of the coil relative to the reaction chamber can be adjusted by driving the coil to move in the elevating way so that possible installing error and processing error of the coil can be eliminated, distribution of a radio frequency magnetic field in the reaction chamber can also be flexibly and accurately adjusted, and thus uniformity of the technology can be enhanced.
Owner:BEIJING NAURA MICROELECTRONICS EQUIP CO LTD
Damping hollow rod with multistage energy dissipation mechanism
PendingCN108061126AEnhance energy consumption control effectEasy to adjustMagnetic springsShock absorbersElectricitySmall amplitude
The invention provides a damping hollow rod with a multistage energy dissipation mechanism, and belongs to the technical field of structure vibration control. The damping hollow rod comprises a hollowrod body, permanent magnets, conductor pieces, rotating springs, pull-press springs, a sliding block, balls, colliding rings, a guide rod, round rubber gaskets, inner end plates, fixed rods, rubber layers and stiffening ribs. According to the damping hollow rod, the eddy-current damping technology is combined with other passive vibration attenuation technologies, and the multistage energy dissipation mechanism is achieved. When small-amplitude vibration happens to the structure, eddy current energy dissipation units and rotating spring energy dissipation units achieve energy dissipation together; when large-amplitude vibration happens to the structure, the eddy current energy dissipation units and colliding energy dissipation units achieve energy dissipation together; and the different energy dissipation units achieve cooperative energy dissipation work, the energy dissipation control effect is obviously enhanced, meanwhile, damping parameters can be conveniently adjusted, and magnetleaking of magnetic circuits is basically avoided.
Owner:DALIAN UNIV OF TECH
Permanent-magnet motor
PendingCN108092480AEliminate troubleAdjust the magnetic field strengthMagnetic circuit rotating partsMagnetic circuit stationary partsMagnetizationPermanent magnet motor
The embodiment of the invention discloses a permanent-magnet motor. The permanent-magnet motor comprises an annular stator structure and an annular rotor structure, wherein a stator core is provided with a plurality of stator modulation teeth, armature teeth and armature slots on an annular surface close to the rotor structure along the circumferential direction; the plurality of stator modulationteeth, armature teeth and armature slots are circularly arranged according to the order of one stator modulation tooth, one armature slot, one armature tooth and another armature slot; a first statorpermanent magnet corresponds to each armature tooth and is located at one end, close to the rotor structure, of the corresponding armature tooth; the first stator permanent magnets are magnetized along the radial direction; second stator permanent magnets are located in notches of the corresponding armature slots; the second stator permanent magnets are magnetized along the circumferential direction; and the second stator permanent magnets corresponding to two adjacent armature slots are opposite in magnetization direction; and a rotor core is alternately provided with a plurality of rotor teeth and rotor slots on the annular surface close to the stator structure along the circumferential direction. The permanent-magnet motor disclosed by the embodiment of the invention is capable of directly driving load to get rid of an intermediate transmission device in a traditional transmission system.
Owner:SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
Key, keyboard and keyboard control method
ActiveCN108415578AAdjust the feel of useAdjust softnessInput/output for user-computer interactionElectronic switchingMagnetic sourceElectrical and Electronics engineering
The invention provides a key. The key comprises a key cap, a key shaft and a base. The key shaft is mounted on the base; and the key cap is slidably mounted on the base through the key shaft. The keycap is provided with a first magnetic source; a second magnetic source close to the first magnetic source by facing to the first magnetic source and mutually exclusive with the first magnetic source is arranged on the base; a backstop mechanism is arranged at one end, far away from the key cap, of the key shaft; a magnetic sensor is arranged at the bottom of the base; and a third magnetic source used for triggering the magnetic sensor is arranged at one end, far away from the key cap, of the key shaft. The output of a triggering signal is realized under the action of the third magnetic sourceand the magnetic sensor, so that the reliability of a working action and the stability of the performance can be improved and the response speed is high. The magnetic source of key cap motion is separated from the magnetic source of signal triggering, so that the mutual interference among different types of the magnetic sources can be reduced, the reliability of the key can be improved integrally,and the key life is prolonged.
Owner:ZHUHAI PANLEI INTELLIGENT TECH CO LTD
Reinforced electromagnetic therapeutic apparatus with superimposed magnetic fields
InactiveCN103432688AAdjust the magnetic field strengthElectrotherapyMagnetotherapyMagnetic coreMagnetic field magnitude
A reinforced electromagnetic therapeutic apparatus with superimposed magnetic fields comprises a control circuit and a magnet therapy head. Multiple sets of coils are installed in the magnet therapy head, the coils are respectively connected with the control circuit, the multiple sets of the coils are wound on a common magnetic core, and the magnetic fields produced by the coils can be superimposed on the magnetic core. The magnetic fields on the magnetic core are led out through a plurality of column-shaped magnetic needles, the area of the magnetic field output end of each column-shaped magnetic needle is small, the magnetic fields produced after the coils are powered up lead out multiple high-intensity magnetic field beams through the column-shaped magnetic needles. According to the reinforced electromagnetic therapeutic apparatus with the superimposed magnetic fields, the coils are wound on the common magnetic core, the magnetic fields produced by each set of coils can be superimposed on the magnetic core, and intensity of the magnetic fields can be adjusted under control of the circuit.
Owner:仇活连
Magneto-sensitive rubber with controllable adhesion characteristics, and preparation method and test device thereof
ActiveCN109632633AImprove adhesionGood magnetorheological propertiesUsing mechanical meansMaterial analysisMotor speedMagnetic current
The invention firstly discloses magneto-sensitive rubber with controllable adhesion characteristics and a preparation method of the magneto-sensitive rubber. The elasticity modulus of the material isreduced by adding reduced graphene oxide in the conventional preparation process, so that good adhesion performance and magneto-rheological performance are realized; under the excitation effect of theexternally applied magnetic field, inside ferromagnetic particles act on each other, so that the elasticity modulus, the surface appearance and the like change; therefore the adhesion performance generates reversible change; and through the controllable adhesion characteristics, a novel solution method is provided for the adsorption-desorption mode of the adhesion material. The invention also discloses a device and method for testing the adhesion power of the magneto-sensitive rubber with controllable adhesion characteristics. The device can be respectively used for testing the adhesion powerin the transverse direction and the longitudinal direction; after the magnetic field exertion, the influence of the magnetic field on each element of the device is possibly eliminated; and meanwhile,the device has the functions of changing materials to be tested and regulating the test conditions such as the motor speed, the pressing time, the pulling speed and the magnetic field intensity, so that the influence of various factors on the adhesion performance of the materials to be tested can be analyzed.
Owner:CHONGQING UNIV OF POSTS & TELECOMM
Portable permanent magnet magnetism detection device with adjustable magnetic field
ActiveCN103412270AAdjustable distanceAdjust the magnetic field strengthMagnetic property measurementsMagnetic field magnitudeEngineering
The invention discloses a portable permanent magnet magnetism detection device with an adjustable magnetic field, and belongs to the field of magnetic detection. The device comprises a first magnetic pole head, a second magnetic pole head, a fixing block, a permanent magnet and an adjusting screw rod, wherein the first magnetic pole head and the second magnetic pole head are oppositely arranged on the fixing block, the first magnetic pole head is movably connected with the fixing block and can slide along the fixing block, and the second magnetic pole head is fixedly connected with the fixing block; the permanent magnet is arranged in the fixing block between the first magnetic pole head and the second magnetic pole head; the first magnetic pole head is connected with the second magnetic pole head through the adjusting screw rod which can adjust the distance between the first magnetic pole head and the second magnetic pole head. The device can conveniently adjust the intensity of the magnetic field between the two magnetic pole heads, and has the advantages of being small and exquisite in size, light in weight, convenient to carry, suitable for being used in a laboratory and used outdoors, capable of detecting whether materials have magnetism or not and the strength of the magnetism, and the like.
Owner:BGRIMM MACHINERY & AUTOMATION TECH CO LTD
Electromagnetic stirring casting device convenient to adjust
ActiveCN109719265ASolve the problem of fixed application scene sizeLow costAlloyElectromagnetic shielding
The invention discloses an electromagnetic stirring casting device convenient to adjust. The electromagnetic stirring casting device comprises stirrer bodies, the stirrer bodies are installed in a water tank, each stirrer body comprises a main magnetic flux, each main magnetic flux is in a regular hexagonal shape, and fixing columns are connected to the centers of six vertex angles of each main magnetic flux. In the electromagnetic stirring casting device, the multiple stirrer bodies can be connected, and the large electromagnetic stirring casting device can be formed, and the problem about the fixed application scenario size is solved; meanwhile, through modular connection, the cost can be effectively reduced, installation and detachment are facilitated, a control rod can be screwed, thedistance between every two connected stirrer bodies can be changed, the magnetic field strength of the device and adjustment of the application area can be achieved, and the utilization rate of a magnetic field can be improved; and the device is compact in overall structure, an existing casting disc size structure is not influenced, the use cist is low, operation by a worker is easy, and the alloyforming scope is wide.
Owner:SHIJIAZHUANG IDEA ELECTRIC
Magnetic field-regulated terahertz wave modulator and manufacturing method thereof
ActiveCN108983411ARealize continuous adjustmentAdjust the magnetic field strengthOptical elementsEngineeringNanowire array
The invention relates to a magnetic field-regulated terahertz wave modulator and a manufacturing method thereof. The modulator is characterized by comprising a fixing bracket, two fixed magnetic fieldadjusting boxes and a plug-in Ni nanowire array lens, wherein the fixing bracket comprises two brackets, a sleeve and four horizontal support rods; the sleeve is welded to the tops of the two brackets; two pairs of holes are symmetrically formed in the top and the bottom of the sleeve; the four horizontal support rods are inserted into the holes respectively and are fixed by welding; an opening is disposed in a middle portion of the sleeve between the two pairs of horizontal support rods; the plug-in Ni nanowire array lens is rotatably inserted into the opening; each of the horizontal supportrod is provided with external threads on the end portion away from the sleeve; and the two fixed magnetic field adjusting boxes are slidably disposed on the external threads on the two pairs of horizontal support rods on both sides of the sleeve respectively, and are fixed by bolts. The magnetic field-regulated terahertz wave modulator can be widely applied to the field of terahertz wave modulation.
Owner:ZHENGZHOU UNIV +1
Magnetic grinder for two-sided disc small-curvature-surface component
PendingCN107617932AImprove processing qualityImprove processing efficiencyGrinding work supportsLinear motionEngineering
The invention discloses a magnetic grinder for a two-sided disc small-curvature-surface component. The magnetic grinder comprises a workpiece rotating mechanism, a workpiece clamping mechanism, a magnetic grinding head reciprocating linear motion mechanism and a magnetic grinding material collecting device. When the whole magnetic grinder is driven by a double-shaft output motor, a workpiece can rotate through gear transmission, and double-eccentric-crankshaft sliding blocks can be driven through belt transmission to assist a magnetic grinding head in reciprocating linear motion; the transmission ratio of the gear transmission to the belt transmission is 1:1, that is, the magnetic grinding head performs the reciprocating linear motion once when the workpiece rotates in a circle; under theaction of a magnetic brush, machining tracks on the workpiece can be uniformly distributed on the whole machining surface through the matching between the rotating motion and the reciprocating linearmotion; in the above process, the grinding material is collected by the magnetic grinding material collecting device, thereby improving the workpiece machining quality and efficiency; and accordingly,the magnetic grinder can be utilized for the finishing grinding of a high-precision large-diameter lens, and has an extensive application prospect in the field of high-precision machining.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
Magnet therapy shoes based on sports health of rehabilitation patient
InactiveCN108926071AAvoid the effects of magnetic therapyMeet the needs of magnetic therapySolesLight therapyMagnetic fluxGroup ii
The invention provides a pair of magnet therapy shoes based on sports health of a rehabilitation patient. Each magnet therapy shoe comprises a shoe body, a sole, a static-magnetic magnet group, a first dynamic-magnetic magnet group, a second dynamic-magnetic magnet group and a magnetic flux adjustable magnet group, wherein the shoe body is arranged on the upper surface of the sole; the static-magnetic magnet group and the magnetic flux adjustable magnet group are arranged on an upper layer of vamp on the front part of the shoe body; the first dynamic-magnetic magnet group is arranged on the front part of the sole; the second dynamic-magnetic magnet group is arranged on the rear part of the sole; the dynamic-magnetic magnet group comprises a magnet group I and a magnet group II; and the magnetic flux adjustable magnet group comprises a permanent magnet, an angle adjusting mechanism and a shield adjusting mechanism. The magnet therapy shoes provided by the invention, by adjusting magnetic flux, can change intensity of a magnetic field so as to satisfy demands of people of different physical quality in different regions on magnet therapy; therefore, the adaptability of the magnet therapy shoes is enhanced; and under the assistance of a dynamic magnetic field, influence of magnetic resistance to a magnet therapy effect on human body can be effectively prevented, so that magnet therapy performance can be improved.
Owner:天津市河东区圣方企业管理咨询服务部
Device and method for generating controllable vortex electron beam
ActiveCN107919258AControllable quantum numberAdjust the magnetic field strengthElectric discharge tubesAngular momentumMagnetic monopole
The invention discloses a TEM based device for generating a controllable vortex electron beam. The device is characterized by comprising an electron gun for generating a planar electron beam, a magnetic field controller, and a magnetic needle wound by a conductive coil; the magnetic needle is arranged on a planar electron beam channel via a chip controlled by electrical equipment; the magnetic field controller generates an intensity controllable magnetic field; and the magnetic field is used to modulate the phase of the planar electron beam. The invention also discloses a method for generatingthe controllable vortex electron beam via the device. The device can form magnetic field distribution similar to magnetic monopole in an electronic microscope, so that the vortex electron beam with single track angular momentum and controllable quantum number is obtained.
Owner:ZHEJIANG UNIV
Magnetron tube for carrying out magnetron sputtering
PendingCN111826623AAdjust the magnetic field strengthSo as not to damageVacuum evaporation coatingSputtering coatingSputteringEngineering
The invention relates to a magnetron tube for carrying out magnetron sputtering. The magnetron tube for carrying out magnetron sputtering comprises a barrel-shaped target. The interior of the target serves as a mounting chamber and is provided with a cathode magnetic bar, multiple supporting frames are arranged on the mounting chamber in the axial direction of the target at intervals, and coolingwater pipes stretching in the axial direction of the target are fixed to the multiple supporting frames. The cathode magnetic bar comprises a pole shoe stretching in the axial direction of the targetand multiple magnetic blocks fixed to the top face of the pole shoe. The bottom face of the pole shoe is connected with the cooling water pipes through interval adjusting seats, and a sealing cover for shielding all the magnetic blocks is further buckled on the top face of the pole shoe. Through the arrangement of the interval adjusting seats, the intensity of the magnetic field reaching the target can be adjusted, the sealing cover is arranged on the top face of the pole shoe, and therefore it is guaranteed that magnets work under the condition of water isolation. By the adoption of the magnetron tube, the service life of the magnetron tube can be prolonged, and the coating quality can be improved.
Owner:ZHEJIANG SHANGFANG ELECTRONICS EQUIP
Earthing pillowcase and functioning method thereof
InactiveCN107126022AImprove magnetismImprove energy releaseElectrotherapyBlanketSurface layerFunction method
The invention provides an earthing pillowcase and a functioning method thereof. The earthing pillowcase comprises a pillowcase top surface and a pillowcase bottom surface; a bottom interlayer is arranged inside the pillowcase bottom surface; a latex layer is sandwiched inside the bottom interlayer; a plurality of electromagnetic components are arranged in the middle of the latex layer; the electromagnetic components comprise magnetic cores; the peripheries of the magnetic cores are wound by coils; two ends of the coils extend out of the latex layers; the pillowcase bottom surfaces are connected with a first plug through a first wire; the first wire is connected in series with potentials; a plurality pieces of energy stone and magnetic stone are embedded into the surface layer of the top of the latex layer; the pieces of the energy stone and the magnetic stone are arranged alternatively; the pillowcase top surface comprises a conductive layer in the inner side and a breathing layer on the outer side; the conductive layer is connected with an electrification insert; a wire inserting hole is formed in the outer end of the electrification insert; a second wire is inserted into the wire inserting hole; a second plug is connected with the outer end of the second wire; a fake live wire inserting piece, a fake null wire inserting piece and a ground wire inserting piece are arranged on the second plug; the fake live wire inserting piece and the fake null wire inserting piece are both insulating inserting piece; and the ground wire inserting piece is a conductive inserting piece.
Owner:浙江瑞轩健康科技有限公司
Adjustable magnetic field generating device under capsule endoscope tracking system
InactiveCN104116481AHigh precisionAdjust the magnetic field strengthSurgeryEndoradiosondesFeedback circuitsControl circuit
An adjustable magnetic field generating device under a capsule endoscope tracking system is connected with a magnetic field sensor module in a capsule in a wireless communication mode. The adjustable magnetic field generating device comprises a magnetic field generating circuit, a time sequence control circuit and a wireless feedback circuit. The output of the time sequence control circuit and the output of the wireless feedback circuit are respectively connected with the magnetic field generating circuit, the time sequence control circuit controls the magnetic field generating circuit to generate an alternating magnetic field in a time division mode, the generated alternating magnetic field is detected and processed through the magnetic field sensor module and is fed back to the magnetic field generating circuit through the wireless feedback circuit, the magnitude of the magnetic field is changed, and the intensity of the magnetic field can be automatically adjusted. The alternating magnetic field with the adjustable magnitude can be provided for the adjustable magnetic field generating device under the capsule endoscope tracking system, the intensity of the magnetic field can be automatically adjusted according to a feedback signal transmitted by a magnetic field sensor, and the tracking precision is improved.
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Permanent magnet brake for adjusting magnetic field intensity
InactiveCN110943596ASolve processing problemsReduce vibrationPermanent-magnet clutches/brakesCopper conductorElectric machine
The invention provides a permanent magnet brake capable of adjusting magnetic field intensity. The permanent magnet brake mainly comprises an engine, a motor shaft, a conductor rotor, a steel body, acopper conductor, a permanent magnet, a spline, a load, a coaxial sleeve, a magnetic isolation assembly and the like. The conventional mechanical connection transmission between a motor and a load isreplaced by an air gap torque transmission mode, and the magnetic isolation assembly and the spline are controlled by an electronic control system, so that the brake effect is improved. The motor is not mechanically connected with a load, has a load protection function, and can reduce vibration and noise at the same time. The coaxial sleeve can balance the rotating speed difference of the inner ring and the outer ring, so that a vehicle is more stable. The device is of a pure mechanical structure, does not consume electricity, does not generate harmonic waves, electromagnetic interference andother pollution, and is a green and environment-friendly product. Buffer starting and multiple times of starting can be achieved. A conductor rotor is installed on the load.
Owner:郝心怡
Speed-adjusting-type self-rotating nozzle
InactiveCN108889476AGuaranteed size and irrigation intensityFreely adjust the rangeMovable spraying apparatusWater pipeWetted area
The invention discloses a speed-adjusting-type self-rotating nozzle. The nozzle comprises a self-rotating nozzle body and a water pipe, a connecting head is detachably connected to the water pipe, andthe self-rotating nozzle body is connected with the connecting head through a speed adjusting assembly; the connecting head comprises a connecting part connected with the water pipe, the connecting part is provided with a boss, the side wall of the boss is provided with an outer thread, and the boss is provided with a through hole communicated with the water pipe; the speed adjusting assembly comprises a shell, the lower end of the shell is provided with an inner thread cavity matched with the boss, and an electromagnetic coil is arranged in the portion, at the outer side of the inner threadcavity, in the shell; a sealed liquid storage cavity is formed in the portion, above the inner thread cavity, in the shell, and filled with damping fluid. According to the nozzle, the purpose of adjusting the speeds of self-rotating nozzles in batches can be achieved through remote control, the range of the nozzle can be freely adjusted, and the size of a wetted area and the sprinkling intensity are ensured.
Owner:INST OF SOIL & FERTILIZER ANHUI ACAD OF AGRI SCI
An electron beam focusing device with a high power density
The invention discloses an electron beam focusing device with a high power density. The device comprises a collecting lens module, an auxiliary collecting lens module and an objective lens module arranged in sequence along an electron beam emitting direction; the collecting lens module is used to form a first magnetic field to enable an electron beam to form a cross point; the auxiliary collectinglens module is used to form a second magnetic field such that a movement trajectory of the electron beam is parallel to the optical axis to form a parallel beam, wherein the first magnetic field is greater than the second magnetic field in terms of the magnetic field strength; and the objective lens module is used to form a third magnetic field to focus the electron beam onto a target plane. A multi-lens combination mode of the collecting lens, the auxiliary collecting lens and the objective lens realizes the intersection, parallel and focus control of the electron beam, thereby obtaining thehigh reduction ratio and small aberration of the electron beam system and the high efficiency transmission of the beam current.
Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
Electromagnetic field system for magnetic refrigerator
PendingCN108709334AReduce diameter sizeEasy to adjustMachines using electric/magnetic effectsSustainable buildingsVoltageEngineering
The invention discloses an electromagnetic field system for a magnetic refrigerator. The system comprises an electromagnetic coil, an L-shaped iron core, a column iron core, a power supply and a mounting rack, wherein the electromagnetic coil, the L-shaped iron core and the column iron core are mounted on the mounting rack; the L-shaped iron core and the column iron core are matched to form a C-shaped iron core, the electromagnetic coil winds one side of the C-shaped iron core, the electromagnetic coil is electrified to generate a magnetic field, and the magnetic field magnetizes the C-shapediron core; the power supply is connected to a wiring terminal of the electromagnetic coil to output a direct voltage; and an air gap is formed between the L-shaped iron core and the column iron core,the width of the air gap can be adjusted, and an active magnetic heat regenerator in the magnetic refrigerator is mounted in the air gap. The system disclosed by the invention can provide the periodically stable magnetic field to a magnetic working medium and the magnetic response characteristic can be adjusted conveniently.
Owner:FUJIAN CHANGJIANG GOLDEN DRAGON RARE EARTH CO LTD
Preparation method of flexible anisotropy bonding rare earth permanent magnet material
InactiveCN101800106BAbundant resourcesReduce manufacturing costInorganic material magnetismInductances/transformers/magnets manufactureMagnetizationRare earth
Owner:UNIV OF SCI & TECH BEIJING
Multifunctional magnetic control nano chain with biological catalysis effect
ActiveCN113368855AAdjust the hydrolysis timeAdjust the magnetic field strengthMicrobiological testing/measurementCatalyst activation/preparationCell freeChemical physics
The invention provides a multifunctional magnetic control nano chain which is synthesized under the control of a three-dimensional magnetic field, can realize group movement and has a biological catalysis effect. The multifunctional magnetic control nano chain is composed of Fe3O4 nanospheres and SiO2. The invention also provides a synthesis control and function realization method. By controlling the interaction between reaction kinetics and a magnetic field in the synthesis process of the magnetic control nano chain, the nano chain with a controllable structure is obtained. Under the coupling of a rotating magnetic field and fluid mechanics, the group movement behavior of the nano chain can be analyzed and simulated, so that the assembly mechanism of the nano chain can be known, and principle support is provided for nano stirring. Three different mechanisms of the nano chain for biological catalysis are researched: a nano stirrer, a high-frequency magnetic field charge transfer medium and iron oxide chemical catalysis. The magnetic control nano chain shows an excellent reaction rate increasing effect when applied to 'glucose oxidase-horseradish peroxidase' and 'cell-free protein expression systems'.
Owner:TSINGHUA UNIV
Magneto-vibration solidification device and method for light alloy melt
The invention discloses a magneto-vibration solidification device and method for light alloy melt, and belongs to the technical field of treatment of light alloy melt. The magneto-vibration solidification device for light alloy melt comprises an induced magnetic field generation system, a vibration system and a cooling system, and further comprises a permanent magnetic field system. The magneto-vibration solidification method for light alloy melt adopting the device comprises the steps of melting a light alloy, and carrying out early preparation of devices; carrying out magneto-vibration treatment; and solidifying the light alloy melt to obtain light alloy ingots. According to the method and the device, during the solidification process of the light alloy, a magneto-vibration device of which the vibration intensity and frequency are convenient to adjust is adopted, a vibrating rod stretches into the alloy melt, and an electromagnetic field drives the vibrating rod to vibrate to change the solidification action of the alloy; and the device is simple in operation, the intensity and frequency are convenient to adjust, the uniformity of solidification structures of magnesium alloy, aluminium alloy and other light alloys can be remarkably improved, and the metallurgical quality of the light alloy ingots is greatly improved.
Owner:NORTHEASTERN UNIV
Portable permanent magnet magnetic detection device with adjustable magnetic field
ActiveCN103412270BAdjust the magnetic field strengthReduce volumeMagnetic property measurementsMagnetic polesUltimate tensile strength
The invention discloses a portable permanent magnet magnetism detection device with an adjustable magnetic field, and belongs to the field of magnetic detection. The device comprises a first magnetic pole head, a second magnetic pole head, a fixing block, a permanent magnet and an adjusting screw rod, wherein the first magnetic pole head and the second magnetic pole head are oppositely arranged on the fixing block, the first magnetic pole head is movably connected with the fixing block and can slide along the fixing block, and the second magnetic pole head is fixedly connected with the fixing block; the permanent magnet is arranged in the fixing block between the first magnetic pole head and the second magnetic pole head; the first magnetic pole head is connected with the second magnetic pole head through the adjusting screw rod which can adjust the distance between the first magnetic pole head and the second magnetic pole head. The device can conveniently adjust the intensity of the magnetic field between the two magnetic pole heads, and has the advantages of being small and exquisite in size, light in weight, convenient to carry, suitable for being used in a laboratory and used outdoors, capable of detecting whether materials have magnetism or not and the strength of the magnetism, and the like.
Owner:BGRIMM MACHINERY & AUTOMATION TECH CO LTD
Magnet control system for magnetron sputtering device
ActiveCN110140191AAvoid erosionImproved in-plane distributionElectric discharge tubesVacuum evaporation coatingControl systemEngineering physics
The present invention relates to a system, for controlling a magnet, which can be used for a magnetron sputtering device. A magnet control system for a magnetron sputtering device of the present invention comprises: a driving power unit; a magnetism generation unit comprising a plurality of magnet arrays; and a magnetism control unit comprising a switch for controlling one or more of the pluralityof magnet arrays such that the magnet arrays can be selectively connected to the driving power unit.
Owner:ULVAC KOREA
A device and method for generating a controllable vortex electron beam
ActiveCN107919258BControllable quantum numberAdjust the magnetic field strengthElectric discharge tubesMagnetic monopoleParticle physics
Owner:ZHEJIANG UNIV
Adjustable Magnetic Field Generator for Capsule Endoscope Tracking System
InactiveCN104116481BHigh precisionAdjust the magnetic field strengthSurgeryEndoradiosondesFeedback circuitsControl circuit
Owner:UNIV OF SHANGHAI FOR SCI & TECH
Magnetic resonance effect based imprinting sensor
InactiveCN108802086AImprove general performanceImprove portabilityMaterial analysis by using resonanceMagneto elasticComputer module
The invention provides a magnetic resonance effect based imprinting sensor and belongs to the technical field of the magnetic resonance effect based imprinting sensor in order to provide the magneticresonance effect based imprinting sensor which is high in detection speed, high in precision and high in detection flexibility. According to the technical scheme for realizing the technical effects, the magnetic resonance effect based imprinting sensor comprises a casing, wherein data output ports are formed in one end of the casing, and a field communication bus is connected with a central control unit through the data output ports; the central control unit is arranged on one side of the casing, a magnet strip is arranged on the other side of the casing, and a pair of sensing modules are arranged between the central control unit and the magnet strip in parallel and comprises a first magneto-elastic ionic imprinting sensing module and a second magneto-elastic ionic imprinting sensing module; a first coil is arranged above the first magneto-elastic ionic imprinting sensing module, and a second coil is arranged above the second magneto-elastic ionic imprinting sensing module. The magnetic resonance effect based imprinting sensor is applied to ion solution concentration detection.
Owner:TAIYUAN UNIV OF TECH
Four-ball friction wear test device lubricated by magnetic fluid
InactiveCN114324040AAdjust the magnetic field strengthMeet the experimental requirementsInvestigating abrasion/wear resistanceMagnetic field magnitudeMagnet
The invention provides a magnetofluid lubricated four-ball friction wear test device which comprises a fixing mechanism, a static ball box is arranged on the fixing mechanism, an extending opening is formed in the upper end of the static ball box, the static ball box is used for placing three tangent static balls and magnetofluid, a testing machine is arranged on one side of the fixing mechanism, and a lifting part is arranged on the testing machine. The lifting piece is connected with a rotating piece through a connecting frame, the rotating piece is connected with a movable ball, the lifting piece is used for controlling the movable ball to make contact with the three tangent static balls, and then the rotating piece is used for controlling the movable ball to make rotary friction contact with the three tangent static balls; an up-down adjusting assembly is arranged below the static ball box, provided with a permanent magnet ring and used for controlling the permanent magnet ring to move up and down. According to the invention, the experiment precision is improved, and the experiment requirements under the working conditions of various magnetic field intensities can be met.
Owner:ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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