640 results about "Spiral coil" patented technology

The present disclosure relates to a heating assembly including an accommodating unit configured to accommodate an aerosol generating article heatable by an induced magnetic field, a spiral coil arranged outside the accommodating unit and configured to generate an induced magnetic field toward the accommodating unit, and a first supporter arranged at a side in the accommodating unit, supporting an outer surface of the aerosol generating article, and separating the outer surface of the aerosol generating article accommodated in the accommodating unit from an inner wall of the accommodating unit, wherein the spiral coil is wound to form a plate shape covering a portion of an outer wall of the accommodating unit, and a center around which the spiral coil is wound is arranged at a point of the outer wall of the accommodating unit.

The invention relates to the technical field of electromagnetic coils, in particular to a laminated special-shaped plane spiral coil winding. The laminated special-shaped planar spiral coil winding is composed of at least two coil layers, and each coil layer is composed of a single special-shaped planar spiral coil. The inner ring part of the special-shaped plane spiral coil is a concentric plane spiral coil, and the outer ring part of the special-shaped plane spiral coil is a tooth-shaped spiral coil extending along the outer periphery of the concentric plane spiral coil; all phases of the coil winding are different in layer, the electrified magnetic field center of each coil layer deviates from the geometric center, and the projection of the magnetic field center of each phase in the plane of the coil winding is in central symmetry distribution. The invention innovatively provides a laminated special-shaped planar spiral coil winding, and provides a squirrel-cage equivalent rotor on the basis of the laminated special-shaped planar spiral coil winding, so as to provide competitive choices for reducing copper loss and improving heat dissipation, magnetic conductivity, structural strength and economic cost of an axial flux motor winding.

The invention discloses a three-dimensional integrated packaging structure and a packaging process thereof. The three-dimensional integrated packaging structure comprises a flip or normal chip with a functional surface and an opposite back surface; the rewiring layer and the chip are vertically stacked and electrically connected with each other; electrically leading the rewiring layer out of the packaging structure; the stacking direction of the inductor and the chip is parallel to the thickness direction of the chip, the inductor and the chip, the rewiring layer and the lead-out structure are physically isolated through an insulating medium layer, the inductor is of a spiral, multi-ring layer overlapping or sectional winding structure, the inductor comprises a magnetic core, a spiral coil surrounding the surface of the magnetic core is formed through etching and electroplating processes, and the lead-out structure is arranged on the surface of the spiral coil. The spiral coil comprises a circuit A, a circuit B and a circuit C, and the magnetic core and the spiral coil are encapsulated by the insulating medium layer. The inductor and the chip are stacked in an inverted or normal mode, the three-dimensional structure saves space, reduces parasitic inductance, resistance and the like, signal transmission is stable, electromagnetic interference is small, and the three-dimensional structure is suitable for the chip packaging field of miniaturization, high integration and the like.

The invention relates to the technical field of electromagnetic coils, in particular to a laminated planar spiral coil winding. The laminated planar spiral coil winding is formed by laminating at least two layers of planar spiral coils, the spiral center fitting line formed by each turn of wire is linear, the planar spiral coils occupy the whole winding plane, the strong magnetic center deviates from the geometric center of the planar spiral coils, and the phases of the winding are different in layer. The invention aims to provide competitive choices for the axial flux motor winding, such as high copper full rate, low copper loss, large air gap, easy heat dissipation and low production cost.

The invention discloses stranding equipment for wire and cable production and manufacturing and a use method thereof, and relates to the technical field of cable production. The movable abutting plate is provided with a spherical surface used for limiting the twisting position of the outer stranded wire. According to the stranding equipment for wire and cable production and manufacturing, outer stranded wires are extruded in the stranded wire conveying direction through the movable abutting plates, so that the lead angles of the outer stranded wires are reduced, in the winding process of multiple strands of outer stranded wires, each strand of outer stranded wires is subjected to forward thrust of a spherical surface when being wound for one circle, and the outer stranded wires are not prone to falling off when being wound. When the friction force is too small, the thrust is transmitted forwards by the rear circle, so that the front spiral circle slightly moves forwards under the thrust force, the distance that the outer stranded wire slides backwards relative to the inner stranded wire due to too small friction force is compensated, and the strand scattering problem caused by relative sliding is reduced. And the inner and outer stranded wires are blown through the air supply unit, so that dust on the sheath is reduced, and the friction force between the inner stranded wire and the outer stranded wire is prevented from being reduced.

The invention relates to the technical field of microelectronics, and discloses a processing method of a passive chip for magnetic field energy collection, which comprises the following steps: S1, providing a chip with a flexible substrate, and depositing a first dielectric layer on the surface of the substrate to isolate the substrate from a coil; s2, forming a three-dimensional spiral coil structure on the dielectric layer by adopting a three-dimensional micro-nano processing technology, wherein the coils are stacked layer by layer in an asymmetric spiral form along a direction perpendicular to the substrate; and S3, in the forming process of the coil, a multi-wire-harness cross arrangement design is used, so that the inductance increment of a unit area is maximized. Through the design of the three-dimensional spiral coils and the asymmetric coils, the limitation of a traditional planar coil structure on magnetic field coupling and induction efficiency is broken through, the three-dimensional spiral coils are arranged in a multi-layer mode in the vertical direction, magnetic flux coupling between the coils is tighter, and the inductance value and the induced electromotive force are remarkably improved.

Spiral inductors, magnetic field sensors incorporating the spiral inductors, and methods of using the magnetic field sensors are provided. The spiral inductors include an electrically conductive spiral coil and a nitrogen vacancy (NV) diamond substrate. A thin barrier layer of a dielectric material separates the spiral coil from the surface of the NV diamond substrate and an overlayer of dielectric material is disposed over the spiral nanocoil. The integration of the spiral coil with an NV substrate in this manner creates a highly enhanced magnetic transduction and produces a simple, high-performance way to control and read out electromagnetic signals. Because the spiral inductors enable electromagnetic-to-optical signal conversion, they can be used as sensors for environmental or biomedical applications and spin-based computation.

The present invention provides a spiral sleeve heat exchanger, which relates to the technical field of heat exchangers and includes an outer tube, an inner tube, a positioning tube, an arc-shaped side plate, and a heat insulation assembly. The inner tube is located inside the outer tube, and the inner tube and the outer tube form a sleeve heat exchanger structure. One end of the positioning tube penetrates through the outer tube and is fixedly welded to the outer wall of the inner tube, and the positioning tube is fixedly welded to the outer tube. In the present invention, by adopting spiral inner and outer tubes, when the metal temperature difference between the inner and outer coils is large, the inner and outer coils will produce deformations of different sizes. Since there is a large gap between the inner and outer coils, their deformations will not be restricted by each other; and the spiral coil has greater elasticity than a straight tube, which can eliminate most of the temperature difference stress, avoid the use of expansion joints, and thus reduce costs and leakage risks.

The utility model discloses a pipe coiling device, which belongs to the technical field of pipe coiling, is used for spiral pipe coiling of steel pipes, and comprises a support frame, a linear motion mechanism, a rotary motion mechanism, a limiting mechanism, a central shaft sleeve and a locking mechanism, one end of the steel pipe is connected with one end of the central shaft sleeve through a limiting mechanism and is locked through a locking mechanism; the linear motion mechanism and the rotary motion mechanism are used for driving the center shaft sleeve to do linear motion and rotate around the center shaft at the same time, and spiral pipe coiling of the steel pipe is achieved. The pipe coiling device can effectively solve the problems that in the prior art, a spiral pipe machined by a traditional pipe coiling machine is large in coaxiality deviation, and the strict requirement of high-precision equipment for pipe precision is difficult to meet; the steel pipe is easy to pop up accidentally in the machining process, and serious potential safety hazards are caused to operators and peripheral equipment.

The invention discloses an immersed rotating packed bed combined coil device and method for reactive extraction, and the combined coil device comprises a shell, a liquid inlet, a sealing assembly, a liquid premixing pipe, a packing assembly, a heat exchange jacket, a liquid emptying port, a liquid outlet and a spiral coil assembly; according to the device, a reactor cavity is completely filled with liquid, so that an immersed reaction environment is formed; and a strong shearing effect is generated by utilizing the supergravity silk screen filler, so that rapid heterogeneous mixing is realized, and the reaction selectivity is improved. Meanwhile, a supergravity reaction area and a coil flow area are combined into a whole, the spiral coil can repeatedly change the flow direction and form vortex to realize continuous flow of the material and maintain the dispersion state of liquid drops, and the retention time of the material is flexibly regulated and controlled by adjusting the length of the coil, so that the reaction conversion rate is remarkably improved.

The invention discloses a horizontal continuous nitration pipeline reactor and a manufacturing method of a refrigerant circulation assembly thereof, and belongs to the technical field of chemical pipeline reactors. The reactor mainly comprises a barrel assembly, a stirring assembly and a refrigerant circulating assembly, and has the advantages of high heat exchange capacity, large unit heat transfer area, high safety and the like. The manufacturing method of the refrigerant circulation assembly is characterized in that a special accessory concentric opposite feeding mechanism is adopted, the mechanism is provided with a bolt chuck and a nut chuck which are coaxial and can move synchronously, and an inner long beam clamping jaw and an outer long beam clamping jaw which can move in the radial direction are arranged on the bolt chuck and the nut chuck respectively. The concentric and opposite accessory feeding mechanism can accurately position components such as angle steel, U-shaped bolts, gaskets and the like and automatically achieve efficient fastening with the spiral coil pipe. According to the method, the technical bottleneck caused by the limited assembly space of the refrigerant circulation assembly is fundamentally solved, efficient and accurate automatic assembly is achieved, and the method has important engineering application value and popularization significance in the technical field of nitrification pipeline reactors.

The invention provides a vertical differential inductor structure and a preparation method thereof, the structure comprises two inductor units, and each inductor unit comprises at least one vertical spiral coil, a first connecting end and a second connecting end. According to the vertical spiral coil, the area of a single-layer inductor is reduced through a metal layer stacking forming mode. The first connecting ends of the two inductor units are connected to the first tap or the two second taps respectively, and the second connecting ends of the two inductor units are connected to the two second taps or the first tap respectively. The two inductor units are symmetrical relative to the vertical plane where the first tap is located to form the differential inductor structure, the quality factor and the anti-interference capacity of the inductor structure are improved, and the inductor structure has a high Q value while the occupied chip area is reduced.

The utility model provides an aerosol generating system and a heating device. Wherein the aerosol-generating system comprises: a replaceable aerosol-generating article, which can be heated to generate an aerosol; a reusable heating device comprising: a receiving chamber for receiving an aerosol-generating article; the planar spiral coils are used for heating the aerosol generating product received in the receiving cavity; the plurality of planar spiral coils are arranged at intervals along the longitudinal direction of the heating device; the planar spiral coil has a length direction and a width direction perpendicular to the length direction, and the length direction of the planar spiral coil is perpendicular to the longitudinal direction of the heating device; and the length size of the planar spiral coil is greater than the width size. According to the aerosol generating system, each planar spiral coil has a larger length in the longitudinal direction perpendicular to the heating device, so that the heating area and the aerosol generating amount during heating each time are increased.

The invention relates to the technical field of wireless power transmission, in particular to a method for calculating the self-inductance of a magnetic coupling mechanism of a flat plate type wireless power transmission system. Comprising the following steps that S1, when inductance of a magnetic coupling mechanism with a coil being a plane spiral coil is calculated, size parameters of the plane spiral coil are determined, and the size parameters comprise the coil inner radius # imgabs0 #, the wire spacing # imgabs1 #, the coil turn number # imgabs2 # and the wire diameter # imgabs3 #; and S2, enabling the multi-turn planar spiral coil to be equivalent to a plurality of concentric circles with equal turn intervals for modeling, and calculating the self-inductance of the multi-turn coil through a formula.

The disclosed technology includes a magnetic location sensor which may comprise first and second spiral coils that can be disposed on a planar substrate. The first and second spiral coils may be disposed about respective first and second center axes, wherein each of the first and second coils can be configured to generate a voltage when subjected to a magnetic field. The magnetic location sensor may also comprise a high-magnetic-permeability planar member that can be disposed near one of the first and second spiral coils. The high-magnetic-permeability planar member can be disposed on the magnetic location sensor such that if the planar substrate is wrapped around a cylindrical substrate, the high-magnetic-permeability planar member may be disposed on an intersection of the first and second center axes.

The utility model relates to the technical field of sensors, and discloses an automobile sensor, which is characterized in that the sensor can be quickly mounted and dismounted by arranging a shell, a fixed sleeve, a pressure reducing pad and other structures, a sliding block is arranged in a sliding groove, the shell is pressed downwards, the pressure reducing pad is contracted, a connecting cylinder is in contact with an air tap, and the shell is rotated; when the sliding block rotates to the position below the clamping groove, the spiral ring is connected with the outer spiral groove in a clamped mode, the connecting cylinder is connected with the air nozzle, force for pressing the shell is released, the pressure reduction pad relieves limitation of the force, the shell is driven to pop up, the sliding block is clamped in the clamping groove, the position of the shell is fixed, and on the contrary, the shell is pressed and rotated in the opposite direction. And the spiral coil is separated from the limitation of the outer spiral groove, and the shell is pulled out to be far away from the fixed sleeve, so that the effect of quickly mounting and dismounting the sensor is achieved.

The present invention discloses a fully wireless ocular surface pressure monitoring system based on a multi-frequency phase-shift decoupling self-calibration algorithm, relating to the technical field of intelligent ophthalmic detection. The system comprises a wearable three-layer contact lens, wherein the outer layer is embedded with a capacitive eyelid pressure sensor and a first spiral coil, and the inner layer is embedded with a piezoresistive intraocular pressure sensor and a second spiral coil, which are respectively tuned to different center frequencies to modulate pressure changes into radio frequency signals. Externally powered receiving glasses or eye masks comprise a multi-frequency transmitting coil, a rectifier circuit and a receiving coil, which supply energy to the sensing structure in the contact lens and sense and obtain a composite signal formed by spatial superposition, which is transmitted to a processing circuit and then sent to a mobile computing terminal. The terminal performs multi-frequency decoupling, sparse matrix separation and temporal self-calibration processing to generate calibration curves of eyelid pressure and intraocular pressure, thereby realizing real-time perception of dual parameters in the eyes-closed state. The system has the advantages of compact structure, high signal separation accuracy and high degree of wirelessness.

The invention relates to the technical field of heat dissipation of microelectronic components, in particular to a phase-change heat dissipation device with a spiral coil structure for a microtube heating component, which comprises a base tube, an inner-layer heat dissipation assembly and an outer-layer heat dissipation assembly, and is characterized in that the inner-layer heat dissipation assembly comprises a phase-change heat dissipation layer arranged in a tube shell and a heat source micro-pipeline embedded in the phase-change heat dissipation layer; comprising an outer-layer heat dissipation component inserted into a phase change heat dissipation layer, a heat removal component arranged on a tube shell, an air inlet component arranged on the heat removal component and a driving component arranged on the tube shell, through the arrangement of the outer-layer heat dissipation component, a heat dissipation plate conducts heat dissipation on the phase change heat dissipation layer, the heat dissipation area is increased, and through the arrangement of a heat dissipation cover, the heat dissipation effect is improved. Passive heat dissipation and active heat dissipation are combined, and the efficiency of passive heat dissipation is improved.

The present invention discloses a design method for a small-size shielding electromagnetic metamaterial for the KHz band, which relates to the field of metamaterial design technology, including: constructing a double-layer end-to-end spiral coil electromagnetic metamaterial primitive model, simulating the model to obtain inductance parameters and resistance parameters, determining the external lumped capacitance parameters and quality factor; judging whether near-zero permeability may occur; simulating the latest model to obtain a solution for the primitive resonant frequency, and comparing the solution with the resonant frequency required by the design; calculating the model geometric factor; calculating the curve of the complex permeability of the electromagnetic metamaterial; determining the point where the permeability is zero and selecting one's own target near-zero interval; simulating the designed model to observe the shielding effect. The present invention is easy to operate, improves the efficiency and repeatability of the design and manufacturing process, realizes the small size of the metamaterial, can meet the electromagnetic shielding requirements of low frequency bands and high efficiency, and has high practicality and market value.

The invention discloses an anti-offset wireless charging system magnetic coupling mechanism and an optimization design method. A transmitting end of the magnetic coupling mechanism adopts a coil of a bipolar reverse high anti-offset structure, and a receiving end adopts a circular plane spiral coil to reduce the weight of a vehicle-mounted end energy pickup mechanism; the transmitting end bipolar reverse high-anti-offset structure is formed by winding uninterrupted litz wires, an outer ring coil and an inner ring coil are located on the same plane and concentric, and the manufacturing directions are opposite, so that the bipolar reverse characteristic is formed. The transmitting end bipolar reverse high anti-offset structure coil also adopts an anti-offset particle swarm optimization design method considering receiving end plane movement mutual inductance smoothness and coil wire length, and under the condition of considering the transmitting end coil wire length, the magnetic field coupling uniformity in the 360-degree plane movement process of the receiving end is improved. The magnetic coupling mechanism provided by the invention has good anti-offset performance, and still has stable magnetic field coupling characteristics in a large-range moving process of a receiving end.

The utility model provides a multi-channel composite variable-frequency scale ion resonance facility which comprises a shell, a spiral cable, a water inlet straight pipe, a middle spiral coil pipe, a water outlet straight pipe, a flow regulating valve, a composite variable-frequency signal generator and a power supply, and the shell is a cylinder and is made of 316 austenitic stainless steel or 304 austenitic stainless steel; the spiral cable is spirally wound and mounted on the surface of the shell; the water inlet straight pipe, the middle spiral coil pipe and the water outlet straight pipe are made of magnetisable materials; the composite frequency conversion signal generator generates composite electromagnetic frequency conversion signals and is connected between the power source and the spiral cable, and circulating water passes through the multi-channel composite frequency conversion scale ion resonance facility and generates resonance under the action of the composite frequency conversion signal generator. The original saturated calcium and magnesium ion combination and even precipitation state is converted into the calcium and magnesium ion unsaturated state with high fluid solubility, and conditions are provided for subsequent access to a water inlet of heat exchange equipment, equipment maintenance cost reduction and heat exchange efficiency improvement.

Aspects of the present disclosure include systems, structures, circuits, and methods providing integrated circuit (IC) packages or modules having a transformer with first and second spiral coils disposed on or adjacent to a substrate, each including one or more coil portions on one or multiple levels and having varying distances to an aperture or coil-origin region. A portion of a soft ferromagnetic core of the transformer can pass through the aperture or be adjacent to the coil origin region. The IC packages and modules may include various types of circuits; in some examples, IC packages or modules may include a galvanically isolated gate driver or other high voltage circuit.

The invention relates to the technical field of spiral-wound membrane elements, in particular to a method for increasing the effective membrane area of a spiral-wound membrane element, a storage medium and equipment. The method comprises the following steps: respectively determining an Archimedes spiral expression r1 of an upper page and an Archimedes spiral expression r1'of a lower page in each folded diaphragm; respectively determining an arc length expression L1 corresponding to the r1 and an arc length expression L1'corresponding to the r1 '; determining the dislocation value L0 of the upper page and the lower page of each folding diaphragm according to the difference value of L1 and L1 '; and determining a dislocation value delta L of every two adjacent folding membranes at the folding end. A computer program instruction is stored in the storage medium; the apparatus includes at least one processor, at least one memory, and computer program instructions stored in the memory, the method being implemented when the computer program instructions are executed by the processor. According to the invention, the diaphragm can be fully utilized.

The utility model provides a magnetically-driven spring-excited vibrating screen, which is characterized in that a rack is supported at the bottom, and a plurality of support columns are arranged at the upper end of the rack; the screen is arranged right above the rack; the multiple ball joints are distributed on the periphery of the lower portion of the screen corresponding to the multiple supporting columns, and bases of the ball joints are fixedly connected with the lower end of the screen. The magnetic drive spring component comprises a reset spring, a permanent magnet, an iron core and a spiral coil, the permanent magnet and the iron core are arranged at the top and the bottom of an inner cavity of the reset spring at intervals, and the spiral coil is arranged in the reset spring and is rotationally connected to the outer portion of the iron core in a winding mode; the magnetic drive spring components are arranged between the ball joints and the supporting columns in a one-to-one correspondence mode, the upper ends of the reset springs and the upper ends of the permanent magnets are fixedly connected with the ball head connecting rods, and the lower ends of the reset springs and the lower ends of the iron cores are fixedly connected with the supporting columns. According to the vibrating screen, the service life of the screen mesh can be remarkably prolonged, and the screening effect and the screening efficiency can be effectively improved.

The invention discloses an MEMS relay, a control circuit and power equipment. The MEMS relay comprises a substrate; the axial direction of the spiral coil is parallel to the substrate, and the spiral coil is spirally wound around the outer side of the magnetic strip in the length direction of the magnetic strip; the first magnetic structure is arranged on the substrate and corresponds to one end of the magnetic strip, a gap is formed between the first magnetic structure and the end of the magnetic strip, and the first magnetic structure and the magnetic strip are used for controlling a controlled circuit. In the application, one end of the magnetic strip is not fixed on the substrate through an anchor and the other end rotates around the anchor, but the whole magnetic strip is suspended in the spiral coil and moves slightly along the axial direction of the magnetic strip, and no anchor point exists, so that the problem that the anchor point is loosened after long-time use is avoided.

The invention relates to the technical field of metal pipe bending forming manufacturing, in particular to a die for bending forming of multiple rows of spiral coil pipes and a forming regulation and control method, and aims to solve the problems that in an existing spiral coil pipe bending technology, the shape cannot be flexibly changed due to die limitation and shape errors are caused by springback. Comprising a rotating center shaft with a protruding structure, a rolling wheel with a space reserved inside, a gasket with a space reserved inside, a circular baffle used for limiting movement of the rolling wheel and the gasket, and a bolt used for fixing the baffle and the rotating shaft. The base circle and the screw pitch of the coil pipe in the target shape are repeatedly iterated through finite element simulation and based on the trained springback value prediction model, and finally the corrected bent base circle and the screw pitch which reduce the influence of the springback value can be obtained, so that it is ensured that the shape of the spiral coil pipe is consistent with the predicted shape, and the machining quality is guaranteed.

This atom trap device 10 for trapping atoms comprises an atom trap unit 16 on which an atomic gas beam is incident. The atom trap unit 16 includes a plurality of optical elements that form a laser light group 18, and a magnetic field generation unit 22. The magnetic field generation unit 22 is provided with at least two spiral coils and, if necessary, a tapered solenoid coil, and optimizes a magnetic field in a guide direction. The spiral coils are configured so that the tip becomes thinner and the winding density becomes sparse as the atoms advance in the direction in which the atoms are guided. The spiral coils are arranged so as to face each other so that an interval therebetween becomes narrower as the atoms advance in the direction in which the atoms are guided. The tapered solenoid coil generates a magnetic field that optimizes the guiding of the atoms and the laser cooling during the guiding by adjusting the component in the direction in which the atoms of the magnetic field generated by the spiral coils are guided. The atom trap unit 16 may also include a baseball coil instead of the spiral coils and the tapered solenoid coil.

The flow sensor comprises a first fan blade, an inductance coil and a conversion circuit, the inductance coil comprises a wire coil, the end faces of the two axial ends of the wire coil are a first side face and a second side face correspondingly, the first side face is constructed into a spiral coil, the wire coil is arranged on the radial side of the first fan blade, and the second side face is constructed into a spiral coil; the first side face corresponds to the first fan blades at intervals, and the first fan blades are used for rotating relative to the wire coil under the driving of fluid, so that the first fan blades and the wire coil dynamically and alternately get close to and get away from each other, and the inductance value of the inductance coil is changed; the conversion circuit is electrically connected with the inductance coil and is configured to convert the change of the inductance value of the inductance coil into a circuit frequency. According to the flow sensor, the principle that the inductance value of the inductance coil is changed due to the fact that the first blade (the magnetic core part) gets close to or away from the inductance coil is utilized for flow detection, a conversion circuit can be simplified, and the circuit design cost can be reduced.

The utility model relates to a waste heat recovery device for waste water after fabric dyeing treatment, the waste heat recovery device comprises a barrel body, a heat exchange pipe and a cleaning assembly, the heat exchange pipe is a spiral coil pipe and is located in the barrel body, the cleaning assembly comprises a cleaning ring, a brush and a driving part, the cleaning ring is arranged on the heat exchange pipe in a sleeving manner, and the brush is located in the barrel body. The brush is arranged on the cleaning ring and used for brushing the outer side wall of the heat exchange pipe, and the driving part is used for driving the cleaning ring to move in a reciprocating mode in the spiral direction of the heat exchange pipe. The heat exchanger has the effect of reducing impurities in waste water adhered to the outer side wall of the exchanger so as to prolong the service life of the heat exchange pipe.

The present invention discloses a thrombus-clearing nanorobot, and the technical scheme thereof mainly includes a spindle-shaped robot body; a threaded spiral coil is arranged at the end of the robot body; an elastic connecting rod is arranged in the spiral coil; the two ends of the connecting rod are respectively connected to the robot body and a magnetic ball; the robot body is made of magnetic material; the line between the robot body and the magnetic ball is the central axis, the robot body above the central axis is the N pole and the magnetic ball is the S pole, the robot body below the central axis is the S pole and the magnetic ball is the N pole, and the spiral coil is a double spiral coil; a connecting ring is arranged at the end of the robot body; the end face of the connecting ring is fixedly connected to the spiral coil; the connecting rod is made of metal tantalum; the cross section of the spiral coil is flat; the present invention has the beneficial effects of clearing thrombus, being convenient to use and easy to recover.