90 results about "Magnetic media" patented technology

The utility model discloses a vertical magnetic cyclone precipitation combined device which comprises a secondary precipitation tank and a cyclone separator arranged in the secondary precipitation tank, the upper part of the cyclone separator is a cylindrical barrel, the lower part of the cyclone separator is of a conical structure, and an underflow outlet is formed in the bottom of the conical structure; a rotary magnetic system capable of generating spiral downward magnetic field force is arranged outside the cylindrical barrel; the inner wall of the cylindrical barrel is provided with a spiral magnetic conductive piece used for magnetism gathering and current stabilizing. A central overflow barrel is mounted in the cylindrical barrel, and an overflow discharge hole communicated with the secondary precipitation tank is formed in the top of the central overflow barrel; the side surface of the cylindrical barrel is connected with a tangential mud inlet pipe which is connected with a water inlet; a water outlet is formed in the top of the secondary precipitation tank. The device can be used for recovering a magnetic medium in magnetic coagulating sedimentation or a magnetic biofilm carrier in a magnetic biochemical system. The device has the characteristics of reasonable structural design, low energy consumption and wide application range, and is high in separation and recovery efficiency of the magnetic medium and the magnetic biofilm carrier.

The invention discloses a dredging device for an ore unloading water pipe of a vertical ring high-gradient magnetic separator, which belongs to the technical field of flushing ore unloading equipment, and comprises a separation rotating ring capable of rotating, and a magnetic medium box is arranged on the circumferential surface of the separation rotating ring; a plurality of water spraying holes are formed in the bottom of the ore discharging water pipe; the movable cross beam is arranged in the ore unloading water pipe, a plurality of conducting columns are arranged on the movable cross beam, and a high-pressure air channel is formed in the movable cross beam; an air injection hole communicated with the high-pressure air channel is formed in the conduction column, and a first valve is arranged between the air injection hole and the high-pressure air channel; the movable cross beam can move between a first position and a second position; at the first position, the conducting column is separated from the water spraying hole; at the second position, the conducting column extends into the water spraying hole, and the first valve is in an open state; the conducting column can extend into the water spraying hole to directly eject impurities in the water spraying hole, meanwhile, ore unloading water quickly flows through the gap, high-pressure gas is sprayed out of the gas spraying hole, and the impurities on the inner wall of the water spraying hole are thoroughly removed through the combined action of the two.

The magnetic separation column comprises an ore feeding hopper, a tailing overflow groove, a separation column body, an electromagnetic system, a concentrate opening and a water feeding pipe, the ore feeding hopper is arranged at the top of the separation column body, the lower portion of the separation column body is communicated with the separation column body, the tailing overflow groove is formed in the upper portion of the separation column body, the concentrate opening is formed in the bottom of the separation column body, and the electromagnetic system is arranged outside the separation column body in a sleeved mode. The water supply pipe is inserted into the lower part of the sorting column; the device is characterized by further comprising a magnetism gathering medium body, the magnetism gathering medium body is fixedly arranged in the separation column, and the top of the magnetism gathering medium body corresponds to the uppermost electromagnetic system. According to the utility model, the phenomenon that fine-particle magnetite moves upwards along with rising water flow and enters tailings to cause black running is effectively avoided, so that the recovery rate of iron ore concentrate is increased, and the grade of the tailings is reduced.

The invention discloses a dielectric composite electromagnetic interference suppression winding magnetic ring, and relates to the field of electronic components. The device comprises a winding belt, and the winding belt is arranged on the periphery of a suppressed cable in a winding mode to form a winding magnetic ring structure. One of the two modes is as follows: (1) a soft magnetic material-polymer composite belt: an electromagnetic functional material is a soft magnetic material; the winding belt is a magnetic medium composite belt material formed by compounding a soft magnetic material and a high polymer material. And (2) a soft magnetic material / dielectric material / high-molecular double-layer composite belt and a grounding metal layer, wherein the electromagnetic functional material comprises a soft magnetic material and a dielectric material. The winding belt is formed by compounding a soft magnetic material and a dielectric material with a high polymer material, the soft magnetic material and the high polymer material are compounded to form a magnetic dielectric layer, and the dielectric material and the high polymer material are compounded to form a dielectric medium layer; and the magnetic medium layer and the dielectric medium layer are overlapped along the thickness direction to form a double-layer composite winding belt. The resonant frequency and the insertion loss can be flexibly adjusted through the structure size and the material parameters.

The present application belongs to the technical field of quartz sand sorting process and equipment, and particularly relates to a medium box dismounting device specially used for a vertical ring high gradient magnetic separator. The dismounting of the medium box of the magnetic separator completely depends on manual operation, which is complicated and inefficient, and the medium box is easily tilted, the nut is wrongly toothed or the mounting thread is damaged due to unstable clamping. The present application provides a medium box dismounting tool, which can tighten or loosen the fixing nut while clamping the medium box, thereby significantly improving the dismounting efficiency and safety. The dismounting device comprises a pair of clamping arms, the lower ends of the clamping arms are provided with clamping portions, and the medium box is arranged between the pair of oppositely arranged clamping portions of the pair of clamping arms to realize fixation. The present application can conveniently grasp, assemble and fix the magnetic medium box of the magnetic separator, reduces the subjective error probability of manual operation, saves time and effort, and is more convenient to take and operate in cooperation with a mechanical arm, can more labor-savingly align the assembly hole position, and more quickly rotates and tightens the nut.

This invention relates to the field of fluid impurity removal detection technology, and discloses an online detection method and system for the impurity removal efficiency of a fluid iron separator. The method includes: measuring the instantaneous content of magnetic impurities at the inlet and outlet in real time using a high-frequency electromagnetic induction sensor; monitoring the change in magnetic flux on the surface of the magnetic medium in real time using a miniature fluxgate sensor array; calculating the apparent impurity removal efficiency based on the impurity content at the inlet and outlet using an edge computing gateway, and simultaneously calculating the magnetic medium adsorption saturation based on the magnetic flux decay curve; weighting the apparent impurity removal efficiency using the magnetic medium adsorption saturation as a weight for adsorption effectiveness; when the magnetic medium adsorption saturation is lower than a preset saturation threshold, attenuation is performed according to the ratio of the apparent impurity removal efficiency multiplied by the magnetic medium adsorption saturation to the preset saturation threshold to obtain the true impurity removal efficiency. This invention solves the problem in existing technologies that cannot distinguish whether impurities are effectively retained or merely pass through the iron separator, achieving accurate detection of the true impurity removal efficiency.

The invention discloses a three-dimensional network structure magnetic fiber carrier reinforced micro-plastic magnetic separation removal method, which is characterized in that Fe3O4 nanoparticles are selectively precipitated among sepiolite fiber bundle layers by controlling a coprecipitation process, and a wedging effect is generated to realize controllable stripping of fiber bundles, so that a three-dimensional network structure magnetic carrier is formed; a mechanical interlocking structure is formed on the surface of the flexible fiber and the micro-plastic, and the pH of a water body is self-adaptively regulated and controlled through the amphoteric ionization characteristic of silicon hydroxyl; enabling the magnetic aggregate suspension to sequentially pass through a multi-stage gradient magnetic field consisting of a pre-magnetization field, a main separation field and a fine scavenging field, and controlling the flow rate to enable the aggregate to form a stable filter cake layer on the surface of a magnetism gathering medium, so as to realize efficient separation of the micro-plastic; and the magnetic gathering medium capturing the aggregate is subjected to heat treatment, so that the micro-plastic is thermally decomposed, the magnetic carrier is directly recycled, the magnetic performance is improved, and regeneration reinforcement is realized. The micro-plastic removal rate reaches 99% or above, the performance is stable after multiple cycles, and the method is suitable for treating various micro-plastic-containing water bodies.

The invention discloses a gangue magnetic separator, and relates to the technical field of coal dressing, the gangue magnetic separator comprises a magnetic separator, a feeding piece and a stirring piece, the magnetic separator is fixedly arranged on the ground, the feeding piece is fixedly arranged on the ground, the feeding piece is located right above the magnetic separator, the feeding piece can uniformly feed materials to be sorted into the magnetic separator, the stirring piece is rotationally arranged in the feeding piece, and the stirring piece can stir the materials to be sorted. The stirring piece can prevent the materials from being blocked in the feeding piece; the magnetic medium recovery device has the effect of improving the recovery rate when the magnetic medium is recovered.

This invention relates to a method for manufacturing high-silicon Fe-based magnetic media using a remelting-rescanning strategy via laser 3D printing, belonging to the fields of advanced manufacturing and mineral magnetic separation. This invention uses high-silicon Fe-based magnetic media powder as raw material. During laser additive manufacturing, the same powder layer is scanned multiple times. After the initial melting, the layer is scanned at least once more using the same laser scanning path, resulting in the high-silicon Fe-based magnetic media. This invention inherits the additive manufacturing characteristics of selective laser melting technology, effectively solving the bottlenecks of extremely brittle processing and geometric limitations in traditional manufacturing processes. Furthermore, it enables personalized customization of the shape and structure of complex high-frequency magnetic media, providing a new approach for manufacturing high-performance high-silicon Fe-based magnetic media. The process of this invention is simple and controllable, and the resulting product has superior overall performance, facilitating large-scale industrial applications.

The application provides an electromagnetic iron remover device and method for detecting the magnetic substance load on a magnetic medium net, comprising a magnetic medium net magnetic cavity, a detection coil, a signal detection circuit and a control unit, a plurality of layers of magnetic medium nets are arranged in the magnetic medium net magnetic cavity; a plurality of detection coils are arranged on the inner side of the cavity wall of the magnetic medium net magnetic cavity, the signal detection circuit is connected with the detection coils, and is used for detecting the change of the inductance value of the detection coil in the process that the magnetic medium net adsorbs iron filings; the control unit is connected with the signal detection circuit, is used for judging the adsorption state of the magnetic medium net according to the change of the inductance value, and is used for controlling the working state of the magnetic medium net magnetic cavity. The application realizes the real-time detection of the magnetic substance load on the magnetic medium net of the electromagnetic iron remover based on the detection coil, and can realize the high-efficiency automatic screening and magnetic separation function of the iron remover.

The present disclosure generally relates to a head assembly in a data storage device. The data storage device may include magnetic media embedded in the device or magnetic media from an insertable cassette or cartridge (e.g., in an LTO drive), where the head assembly reads from and writes to the magnetic media. During device operation, the magnetic media moves across the head assembly. The magnetic media experiences higher contact stress at certain points or portions of the head assembly. A sensor guard is coupled to the head assembly. The sensor guard comprises at least one chamfered surface or at least one stepped surface to decrease the contact stress between the magnetic media and the head assembly during device operation. The at least one chamfered or stepped surface may be disposed on a leading edge of the sensor guard.

The utility model discloses a battery cell heating mechanism and equipment, which is characterized in that a battery cell is placed between two electromagnetic heating components, and a hot-pressing driving piece is driven, so that the distance between the two electromagnetic heating components is shortened, an induction coil eddy current is formed between the two electromagnetic heating components, and magnetic substances in the battery cell and magnetic lines generate cutting heating; and the magnetic medium in the magnetic field range is heated together in an electromagnetic induction manner, so that the heating speed is high, the heat loss can be reduced, the heat conduction efficiency is improved, and the productivity of the battery cell in the heating process is favorably improved.

High temperature lubricants for magnetic media include a plurality of segments according to general formula (I):where Rd is any linker chemistry and each Re may be a reactive end-group and anchoring group containing at least one constituent configured for at least one of tribochemical, thermochemical, or optochemical bonding. The at least one constituent can be cyclopropane or cyclobutane.

The spot size converter (SSC) in the HAMR magnetic recording head assembly has multiple split-assist core structures. Each split-assist core structure includes multiple assist cores and a main waveguide. Each split core may also include one or more side waveguides, where the main waveguide is sandwiched between the side waveguides and between the top and bottom assist cores. Adjacent split-assist core structures may share an assist core. The split-assist core structure reduces the light source power used to write data to the magnetic media.

This invention discloses a magnetic separation device for a non-metallic mineral magnetic separator, comprising a housing, an excitation coil, a magnetic separator cylinder passing through the excitation coil, and a feed pipe. The magnetic separator cylinder has a cylindrical outer ring and contains 2 to 4 smaller magnetic separator cylinders. Each smaller magnetic separator cylinder contains a magnetic medium. The housing has a cap at the top, and both the cap and the bottom of the housing have feed holes. The top and bottom of the 2 to 4 smaller magnetic separator cylinders correspond to the feed holes, and the feed holes are connected to the feed pipe, forming a continuous structure among the 2 to 4 smaller magnetic separator cylinders. Alternatively, the magnetic separator cylinder may contain 4 smaller magnetic separator cylinders, with the first two and the last two connected in parallel. This invention can extend the disassembly and cleaning cycle of the magnetic medium, avoid magnetic separator cylinder blockage, reduce the production cost and energy consumption of the magnetic separator, and improve efficiency.

The present application relates to thrust bearing technical field, particularly to a kind of composite bearing equipment and its axial load supporting method, bearing equipment includes axial permanent magnetic levitation bearing device and magnetic medium lubrication thrust roller bearing device;Axial permanent magnetic levitation bearing device is used to generate repulsion type magnetic levitation force;Magnetic medium lubrication thrust roller bearing device includes upper thrust roller seat, lower thrust roller seat, magnetic conducting ring, magnetic lubricating medium and several rollers;Upper thrust roller seat and lower thrust roller seat are made of ferromagnetic material, and roller is fixed on lower thrust roller seat by magnetic force;Roller below is also provided with the permanent magnetic block or the roller positioning reverse permanent magnetic block that is arranged along circumference interval, separated by non-magnetic interval block;By forming circumferential magnetic circuit chain, magnetic lubricating medium is adsorbed on the surface of roller.By this bearing equipment and its axial load supporting method, static load can be supported, dynamic load can also be supported, and roller damage can be avoided.

The application provides an arrangement structure of anti-fluidization medium pieces, which comprises a medium piece array in a magnetic medium box; one end of the magnetic medium box is a slurry input end, and the other end is a slurry output end; the medium piece array is arranged by three or more medium pieces; in the upward view of the slurry flow direction of the magnetic medium box, the three adjacent medium pieces are arranged in a non-isosceles triangle layout which can destroy the fluidization movement rule of the slurry, so as to increase the collision probability of the magnetic particles in the slurry and the medium pieces; the arrangement method of the application can effectively increase the adsorption area, destroy the slurry flow rule, and significantly improve the separation efficiency of the high-gradient magnetic separator.

The application discloses a micro-nano magnetic medium sealing device with an end face flow guide groove, which comprises a shell, a rotating shaft and a micro-nano magnetic medium sealing assembly. The micro-nano magnetic medium sealing assembly comprises a magnetic conductive shaft sleeve, a low-pressure side pole shoe, a high-pressure side pole shoe and a magnet. A sealing gap for filling the micro-nano magnetic medium is arranged between the low-pressure side pole shoe and the first pole tooth and between the high-pressure side pole shoe and the second pole tooth. At least one of the low-pressure side pole shoe and the high-pressure side pole shoe is provided with a flow guide groove. When the magnetic conductive shaft sleeve rotates, the flow guide groove is used for providing the micro-nano magnetic medium with an acting force opposite to the pressure difference direction. The micro-nano magnetic medium can flow along the flow guide groove during the rotation, and the deviation of the micro-nano magnetic medium caused by the pressure difference and the centrifugal force is partially offset, so that the leakage of the micro-nano magnetic medium caused by the centrifugal force is reduced, the sealing performance is improved, and the requirement of a higher sealing medium pressure is met.

The utility model discloses a calcining device for processing modified bentonite, which belongs to the technical field of bentonite calcining and comprises a calcining component, a stirring component is arranged at the top end of the calcining component, and a magnetic field gradient component is arranged outside the calcining component. The number of layers is 3-5, the flowing speed of cooling water is 2-5 L / min, the water temperature is lower than 25 DEG C, overheating is prevented, the outer layer is a permanent magnet array neodymium iron boron magnet arranged in the radial direction, a plurality of strip-shaped neodymium iron boron magnets are adopted and fixed to a shell through a stainless steel protection shell, the induction magnetic field intensity is changed by adjusting the current of an electromagnetic coil to be 0-10 A, and the induction magnetic field intensity is overlapped with a permanent magnet inherent magnetic field; according to the present invention, the magnetic medium such as Fe3O4 particles can obtain enough energy at the material inlet, the temperature can be rapidly increased to the target temperature such as 300-500 DEG C so as to achieve efficient heat transfer, and the process requirements such as the switching of the calcination curves of different bentonite varieties can be rapidly responded within 10 seconds by adjusting the current of the electromagnetic coil to 0-10 A;

The present application relates to a kind of periodic magnetic separator, bag machine magnetic system and pipeline system, and the pipeline system includes vertical cylinder, and the magnetic system includes upper magnetic pole head and lower magnetic pole head being spaced apart along up and down, and upper magnetic medium and lower magnetic medium are arranged between upper magnetic pole head and lower magnetic pole head, and the periodic magnetic separator further includes separation cylinder, and the separation cylinder includes separation cylinder bottom plate between upper magnetic medium and lower magnetic medium, separation cylinder bottom plate upper end is fixed with separation cylinder cylinder body, and upper magnetic medium is located inside separation cylinder cylinder body, and separation cylinder bottom plate lower end is connected with separation cylinder discharge cylinder, and lower end passes through lower magnetic medium and communicates with the upper side of lower magnetic pole head, separation cylinder bottom plate is provided with bottom plate discharge hole, and bottom plate discharge hole is connected with feed cylinder, and the upper end of feed cylinder is passed out by the upper side of upper magnetic medium and upper magnetic pole head.The present application provides a kind of periodic magnetic separator capable of improving magnetic separation throughput.

Lubricants with epoxide-based linkages for Heat Assisted Magnetic Recording (HAMR) are provided. Epoxide chemistry produces one such lubricant for magnetic media according to general formula (Ia): (Formula (Ia)) where Dn is –(CF2CF2CF2O)n-, R1, R2, R3, R4, R5 and R6 independently comprise single or branched non-fluorinated or fluorinated C1-C10 alkyl, C1-C10 alkoxy, benzene, naphthalene, anthracene, phenanthrene, dibenz[a,h]anthracene, pyrene or benzopyrene, with n being from 2 to 50.

The invention provides a composite wave-absorbing material and a gradient microporous composite wave-absorbing material as well as a preparation method and application thereof, and belongs to the technical field of electromagnetic wave-absorbing materials. The invention provides a preparation method of a composite wave-absorbing material. The composite wave-absorbing material comprises the following raw material components: a polymer, a magnetic medium type wave-absorbing agent and a resistance type wave-absorbing agent, the polymer comprises one or more of polystyrene-ethylene-butylene, an ethylene-vinyl acetate copolymer and epoxy resin. In the invention, due to the introduction of the gradient porous structure, impedance matching is optimized, and the microporous wave-absorbing material shows excellent electromagnetic wave absorption characteristics, realizes broadband absorption, and can be applied to the fields of military stealth, automobile traffic and civil electromagnetic protection.

This invention belongs to the field of transmission device technology and discloses a perfectly coupled secure information transmission device based on a multilayer nanofilm structure filled with a dielectric sheet. The device includes an input region, a transmission region, and an output region; the input and output regions are free space; the transmission region consists of a three-layer "sandwich" structure, which is formed by two layers of non-magnetic ENZ dielectric wrapped around a thin dielectric plate. This invention analyzes the effect of the amount of dielectric dopant on the electromagnetic resonant bandwidth of the doped ENZ dielectric when the above structure is equivalent to a lossy EMNZ material. The analysis shows that with the increase of the amount of dopant, the resonant bandwidth of the entire structure is significantly broadened, thereby extending the perfect absorption bandwidth of the above structure. Simultaneously, by using a multilayer Ag / silicon carbide nanofilm structure filled with dopant at a wavelength of 430 nm, an optically perfect absorber based on a lossy EMNZ dielectric with an extended operating bandwidth is designed.

The utility model provides a layered formula magnetic medium box, include: the shell is equipped with the containing groove in its inside, at least two layers of magnetic medium group, can be dismantled and is stacked in the containing groove, clamping subassembly is set up between two layers of magnetic medium group for realizing the detachable connection between two layers of magnetic medium group, the pressing plate subassembly is located between the magnetic medium group of the top layer and the shell top, for the multiple layers of magnetic medium group can be dismantled and is pressed tightly fixed in the containing groove, among them, the multiple layers of magnetic medium group can be taken out from the containing groove layer by layer. The utility model discloses a multiple layers of detachable formula stacked setting magnetic medium group in the shell inside, makes magnetic medium box in the cleaning can take out the magnetic medium group from the shell layer by layer and carries out accurate flushing, solves the problem that the high pressure water gun can not be accurate in the art in the middle region gap of magnetic medium box, and the cleaning effect is not good, guarantees the separation efficiency, improves the cleaning convenience.

The present invention relates to a magnetic recording head assembly for a magnetic media drive. The magnetic recording head assembly includes a slider having a medium-facing surface (MFS), a top surface opposite the MFS, a trailing surface adjacent to the top surface, and an optical grating disposed on the trailing surface. A vertical-cavity surface-emitting laser (VCSEL) device is attached to the trailing surface of the slider. The VCSEL device is aligned with the optical grating. A magnetic recording head including a waveguide and a near-field transducer (NFT) coupled to the waveguide is disposed on the trailing surface of the slider. The VCSEL device can emit multiple phase-coherent laser beams onto the optical grating. The optical grating can direct the emitted laser beams at approximately 90 degrees relative to the waveguide.

The present disclosure generally relates to a magnetic recording head for a magnetic media drive. The magnetic recording head comprises a main pole, a waveguide disposed adjacent to the main pole, a near field transducer (NFT) coupled between the main pole and the waveguide, the NFT being recessed from a media facing surface (MFS), a thermal shunt disposed on the NFT, the thermal shunt being recessed from the MFS, and a stable material disposed between the NFT and the MFS. The stable material is spaced from the thermal shunt, and the stable material and the NFT comprise different materials. In some embodiments, a surface of the stable material facing the waveguide is tapered. The stable material may comprise two or more layers, the two or more layers comprising different materials.

The application belongs to the technical field of microwave and millimeter wave material electromagnetic parameter testing, and particularly relates to a complex permittivity testing device based on an electric field compression cylindrical cavity. The device comprises a closed cylindrical resonant cavity shell. A ring-shaped magnetic medium material is arranged in the cylindrical resonant cavity shell. The ring-shaped magnetic medium material is fixed to the bottom wall of the cylindrical resonant cavity and coaxial with the cylindrical resonant cavity shell, and the height of the ring-shaped magnetic medium material is consistent with the height of the cylindrical resonant cavity shell. The electric field of the cylindrical resonant cavity is compressed in the central region of the cavity by the ring-shaped magnetic medium material, so that the accuracy of testing the complex permittivity of low-sensitivity dielectric materials by the cylindrical resonant cavity is improved.

The present disclosure generally relates to a magnetic recording head for a magnetic media driver. The magnetic recording head includes: a main pole; a waveguide disposed adjacent to the main pole; a near field transducer (NFT) coupled between the main pole and the waveguide, the NFT being recessed from a media facing surface (MFS); a thermal diverter disposed on the NFT, the thermal diverter being recessed from the MFS; and a stabilizing material, the stabilizing material being disposed between the NFT and the MFS. The stabilizing material is spaced apart from the thermal splitter, and the stabilizing material and the NFT comprise different materials. In some embodiments, a surface of the stabilizing material facing the waveguide is tapered. The stabilizing material may include two or more layers, the two or more layers including different materials.

The application discloses a kind of metal ion doped magnetic medium cooperative core-shell structure wave-absorbing material and its preparation method and application.The core layer of the wave-absorbing material described in the application is iron-based material, and the shell layer is a manganese dioxide layer doped with metal ions coated on the surface of the core layer.By using a hydrothermal method to prepare magnetite nanoparticles with uniform size, and using potassium permanganate, manganese sulfate monohydrate and metal salt as reaction raw materials, the application continues to use a hydrothermal method to grow manganese dioxide doped with metal ions on the surface of the magnetite, forming a wave-absorbing material with a core-shell structure.The wave-absorbing material prepared by the application has multiple loss mechanisms such as dielectric loss, magnetic loss, internal reflection and scattering loss, has excellent wave-absorbing performance, and has a wide absorption frequency band, good impedance matching, a simple preparation method, and is suitable for continuous industrial production.