319 results about "Electromagnetic system" patented technology

The invention provides an electric power and magnetic power dynamic joint detection method and system based on multivariable fusion, and relates to the technical field of power electronic equipment detection. According to the method, voltage, current and magnetic field sensors are arranged in a to-be-tested electromagnetic system, original physical quantity data are collected, and a multivariable time sequence data set is constructed; through preprocessing and feature extraction, a dynamic feature matrix related to electric power and magnetic power is generated; constructing a joint estimation model based on the matrix, and comparing the joint estimation model with a reference value to obtain a detection residual error; generating a state label according to the residual size and trend, and evaluating the estimation credibility in combination with a confidence interval; and a feedback mechanism is further constructed, model parameters and feature structures are optimized by adopting an adaptive algorithm, and online iteration and self-learning are realized. The method is high in detection precision, high in state recognition capability, good in adaptability and robustness, and suitable for energy flow monitoring and intelligent diagnosis of a complex electromagnetic system.

The invention provides a simulation method of a direct current electromagnetic switch series connection multi-fracture arc. The method comprises the following steps: S1, coupling electromagnetic system simulation and mechanical dynamics, namely obtaining a two-dimensional interpolation table of electromagnetic attraction, coil current and iron core displacement through electromagnetic system simulation, and importing a mechanical dynamics simulation model to obtain the breaking speed of a direct-current electromagnetic switch contact; s2, magnetic induction intensity of different positions is obtained through a magnetic blow-out system model, and based on the magnetohydrodynamic theory, a physical field is coupled to establish an arc simulation model of a single fracture; s3, performing series multi-fracture arc simulation by means of coupling an external circuit; according to the method, the influence of different parameters (the number of fractures, asynchronous breaking time, breaking speed, magnetic induction intensity distribution, gas physical property parameters, different loads and the like) on the evolution process of the series multi-fracture arc can be analyzed.

The utility model relates to a circuit breaker, including a base, a partition, an upper cover, an operating mechanism, an electromagnetic system and a leakage tripping mechanism, wherein the leakage tripping mechanism includes a leakage tripping device, the operating mechanism includes a handle, an L-pole contact seat, an L-pole moving contact arranged on the L-pole contact seat, an N-pole contact seat, an N-pole moving contact arranged on the N-pole contact seat, a lock and a tripping lock, in a closed state, a tripping rod extends out of an installation space, and when tripping, the lock rotates the tripping rod under the action of the electromagnetic system to retract the installation space, and the leakage tripping mechanism also includes a pull rod, the pull rod includes a fixed arm, a swing arm and a leakage pushing arm that are integrally formed or fixedly connected, and the fixed arm is connected to the lock. By adopting the above technical solution, the utility model provides a circuit breaker with a reasonable structural layout, flexible and smooth lock action, fast tripping speed, and a simple transmission structure between the leakage tripping device and the lock, good stability, and fast transmission.

The invention relates to the field of machining equipment, and discloses a pressing device for machining and manufacturing, the pressing device comprises a base and a clamp mechanism, a linkage system driven by a hydraulic rod is arranged in the middle of the base in a hollowed-out mode, and a four-direction clamping structure is formed by a fixed clamping piece, an opposite moving clamping piece and linkage clamping pieces on the two sides. The outer layer is an ultra-high molecular weight polyethylene fiber woven layer, the middle layer is a shear thickening gel layer, the inner layer is an electromagnetically-controllable magnetorheological fluid cavity, and the electromagnetic coils distributed on the two sides of the clamping piece are matched, so that continuous adjustment of the contact rigidity from flexible attachment to rigid locking is achieved. The device is integrated with an energy recovery system, a lead zirconate titanate piezoelectric plate is arranged on a sliding rail at the top of a clamping piece, machining vibration energy is converted into electric energy to be stored in a bottom lithium battery, and power is supplied to an electromagnetic system to form an energy closed loop. The device breaks through the form limitation of a traditional clamp, can adapt to most special-shaped workpiece contours, meanwhile, has the functions of utilizing kinetic energy and reducing energy consumption, can meet the daily use requirement, and has commercial prospects.

A switching device comprises a shell, a contact system and two electromagnetic systems, the contact system and the two electromagnetic systems are arranged in the shell, the two electromagnetic systems are oppositely arranged on the two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move. The upper armatures of the two groups of electromagnetic systems are connected through a linkage shaft, the contact system comprises a static contact and a moving contact 5 arranged on a contact support 4, the linkage shaft is connected with the contact support, and the two groups of electromagnetic systems respectively drive the contact support to move through the linkage shaft. The contact support drives the moving contact to be in contact with or separated from the static contact, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

Systems and methods for separating chiral objects in a mixed solution are provided. In some aspects, a method includes providing a separation device with a mixed solution of chiral objects comprising a first species of chiral objects and a second species of chiral objects. The method also includes directing an electromagnetic system positioned about the separation device to generate a time-dependent electric field excitation configured to selectively control a propulsion of chiral objects in the mixed solution to spatially separate the first species of chiral objects from the second species of chiral objects inside the separation device. The method further includes collecting spatially separated chiral objects from the separation device.

The utility model relates to the technical field of projection display, in particular to a laser speckle eliminator and projection equipment, the laser speckle eliminator comprises a stator part and a rotor part, the stator part comprises a substrate, and a vibration assembly and a first diffusion sheet which are arranged on the substrate; the mover part comprises an elastic assembly connected with the substrate and a second diffusion sheet arranged on the elastic assembly, and the second diffusion sheet and the first diffusion sheet are oppositely arranged; when the vibration assembly vibrates, the elastic assembly drives the second diffusion sheet to vibrate through resonance so that the second diffusion sheet can move relative to the first diffusion sheet, and the laser speckle eliminator does not need an electromagnetic system, reduces parts and is simple in structure.

The invention discloses fatigue test equipment and method for a riveting tool. Comprising a damping load system used for providing a load and used for simulating the stress condition during riveting of a snap rivet, the instant condition of snap of the snap rivet is simulated through the instant release effect of magnetic attraction force generated by an electromagnet, the whole tension system is monitored in real time through a pressure sensor, and the electromagnet can test the tensile force of the snap rivet according to test requirements. The electromagnets with different magnetic attraction forces are selected, when simulation starts, the damping load system is compressed successively along with increase of riveting force, and when the tension detected by the pressure sensor reaches the test requirement, the control system controls the electromagnet system to lose power, and the magnetic attraction forces generated by the electromagnets are released instantly. Therefore, the stress condition of the snapping type rivet during riveting can be simulated. According to the method, the stress condition during riveting of the snapping type rivet can be simulated, more importantly, impact vibration at the snapping moment can be simulated, and the problem that an existing snapping type riveting tool cannot be subjected to fatigue testing is solved.

The present invention relates to a small-volume magnetic latching relay for smart homes. It solves the problem of existing relays becoming larger as the load increases. The relay comprises a mounting base, an electromagnetic mounting structure disposed in the middle of the mounting base, an L-shaped armature connection assembly disposed on the electromagnetic mounting structure, the L-shaped armature connection assembly and the electromagnetic mounting structure forming an installation space, an electromagnetic system assembly disposed within the installation space, one end of the L-shaped armature connection assembly being connected to the upper end of the electromagnetic system assembly in an opening and closing manner, an electromagnetic return mechanism disposed on one side of the L-shaped armature connection assembly, one side of the electromagnetic return mechanism being plugged into the L-shaped armature connection assembly, a dynamic spring mechanism disposed on one side of the electromagnetic return mechanism, a static spring mechanism disposed on one side of the dynamic spring mechanism, and an assembly housing disposed circumferentially around the mounting base that encloses the entire device. The present invention has the advantages of simplifying the internal structure of the relay, minimizing the assembly volume of the relay, and extending its applicability.

The invention belongs to the technical field of magnetic variable measurement, and particularly relates to a power driving compensation method and system for magnetostrictive load characteristic monitoring, and the method comprises the steps: obtaining a reference zero point of magnetic performance evolution in a cold state environment of an electromagnetic system according to the center frequency of the electromagnetic system; calculating a current main frequency impedance module value and a phase difference through an electrical parameter characterization method, and obtaining a thermal drift index reflecting a hysteresis loop distortion degree in combination with a reference zero point; obtaining correction factors of all orders based on the thermal drift index and the average output power at the current moment, and dynamically updating a coefficient vector of the inverse model; and constructing a pre-distortion driving voltage signal capable of counteracting nonlinear interference by using the new coefficient and the ideal guided wave voltage sequence, and inputting the pre-distortion driving voltage signal to a power amplifier to drive the magnetostrictive transducer. According to the invention, the problem of predistortion failure under a variable-temperature working condition in the prior art is solved, and the signal-to-noise ratio of high-power long-distance guided wave detection is remarkably improved.

This invention belongs to the field of curing and molding of short fiber composite materials, and discloses an apparatus and method for three-dimensional oriented curing and molding of short fibers. The orientation device of this invention includes a storage tank for holding the short fiber curing solution, a base for fixing the entire device, a horizontal rotation system for controlling the horizontal angle of the fibers, a vertical rotation system for controlling the vertical rotation angle of the fibers, and an electromagnetic system and a control system for providing an electromagnetic field. Under the command of the control system, the electromagnetic system generates an electromagnetic field, which is then used for magnetic field positioning under the drive of the horizontal and vertical rotation systems. The electromagnetic field then orients the magnetized short fibers. This apparatus and method can achieve three-dimensional orientation of short fibers in a matrix material, effectively improving the mechanical properties of short fiber reinforced composite materials and further enhancing the designability of short fiber composite materials.

The invention relates to a relay. The relay includes: a base; the contact assembly comprises a first movable spring part, a second movable spring part, a first static spring part and a second static spring part which are arranged on the base, the first movable spring part is opposite to the first static spring part, the second movable spring part is opposite to the second static spring part, and at least part of the first static spring part can generate flexible deformation; the electromagnetic system is arranged on the base and used for driving the first movable spring part and the second movable spring part to move in the direction close to or away from the first static spring part and the second static spring part. And the stroke difference that the electromagnetic system drives the first movable spring part and the first static spring part to make contact is smaller than the stroke difference that the electromagnetic system drives the second movable spring part and the second static spring part to make contact. According to the relay, the first static spring part can absorb contact stress through flexible deformation, and the first static spring part and the first movable spring part are prevented from being damaged and deformed due to stress.

The invention discloses an arbitrary elliptical polarization programmable array antenna construction method. A single multi-polarization reconfigurable antenna can only realize a plurality of discrete polarization states and cannot realize receiving or transmitting of any elliptical polarization electromagnetic wave. According to the method, expected elliptical polarization is decomposed into superposition of vectors in the long axis direction and the short axis direction of an ellipse, four alternative polarization states are selected according to projection values of a multi-linear polarization reconfigurable unit in the two directions, then the number of the four alternative polarization states is calculated, and the polarization states of array units are randomly distributed according to the calculated number. And finally, receiving or transmitting any elliptical polarization electromagnetic wave according to the wave beam direction and the expected elliptical polarization configuration unit excitation phase. Polarization resources of electromagnetic waves can be fully utilized, and the method plays a significant role in expanding the capacity of a wireless electromagnetic system, improving the receiving and transmitting efficiency of the system, resisting external interference and the like.

The invention belongs to the field of transient electromagnetic detection, and particularly relates to a weak coupling transient electromagnetic system based on a differentiating circuit, which is characterized in that a transmitting coil and a receiving coil are arranged in a central loop manner, the centers of the transmitting coil and the receiving coil are overlapped and coplanar, and the receiving coil is positioned in the coverage range of the transmitting coil; the transmitting power supply provides electric energy for the transmitter, the Hall sensor sleeves the transmitting coil and is used for detecting current in the transmitting coil, the Hall sensor converts the current into voltage signals and outputs the voltage signals to the differentiating circuit, and the output end of the differentiating circuit and the output end of the receiving coil are connected to two input ends of the subtraction circuit. The output end of the subtraction circuit is connected into a data acquisition card through an amplifier, and the data acquisition card inputs acquired data into an upper computer to record secondary field signals. According to the method, the limitation of the traditional structure on the size of the receiving coil is overcome, weakening of emission energy is avoided, and meanwhile secondary field signal damage possibly caused by a traditional numerical calculation method is avoided.

The invention discloses a continuous operation gravity energy storage device coupled with magnetic field force and an operation method.The device comprises a top storage platform, a ground platform, an energy storage box, a steel cable, a continuously variable transmission, a controller and an electromagnetic system, the top storage platform is arranged above the ground platform, and the energy storage box is vertically hung below the continuously variable transmission through the steel cable; an energy storage weight can be loaded in the box, the electromagnets and the permanent magnets at the top of the energy storage box keep homopolar repulsion, and the electromagnets and the permanent magnets at the bottom of the energy storage box form heteropolar attraction; the controller accurately controls the magnetic field acting force in the lifting process of the energy storage box by adjusting the current intensity of the electromagnet and the rotating speed of the continuously variable transmission, kinetic energy sudden change in the acceleration / deceleration stage of the energy storage weight is dynamically compensated through the magnetic field force, and two sets are arranged to achieve continuous power generation. Through cooperative control of electromagnetic force and mechanical transmission, the rapid response capability of the system to power grid demand fluctuation is remarkably enhanced, meanwhile, the mechanical loss of equipment is reduced, and the application scene of the gravity energy storage technology is expanded.

A switching device comprises an electromagnetic system and two contact systems, the electromagnetic system comprises a coil assembly, a movable iron core and a static iron core, a magnetic gap is reserved between the movable iron core and the static iron core, each contact system comprises a movable contact assembly and a static contact assembly which are matched with each other, and the electromagnetic system is arranged between the two contact systems. The movable iron core is in linkage connection with a linkage piece, the two ends of the linkage piece are in linkage connection with the movable contact assemblies of the two contact systems respectively, under driving of the electromagnetic system, the moving tracks of the movable contact assemblies, the movable iron core and the linkage piece are all parallel to the central axis of the linkage piece, and the central axis of the linkage piece is connected between the two ends of the linkage piece. According to the utility model, the two contact units are respectively arranged at the two opposite sides of the electromagnetic system, the two ends of the linkage piece can drive the moving contact assembly, and meanwhile, the moving tracks of the moving contact assembly, the moving iron core and the linkage piece are parallel to the central axis of the linkage piece, so that the occupied space is small, and the size of the switching device is reduced.

The utility model relates to the field of low-voltage electric appliances, in particular to a circuit breaker, a major loop structure of the circuit breaker comprises an operating piece, an electromagnetic system, a contact system, an arc extinguishing system and a control system, the operating piece slides in a reciprocating manner to drive the contact system to be closed and opened through the electromagnetic system, and the control system controls the electromagnetic system to act to drive the contact system to be closed and opened; the main loop structure further comprises a sampling device, and when overload and / or short-circuit current flows through the contact system, the electromagnetic system is controlled by the control system to drive the contact system to be disconnected; the circuit breaker is simple in structure and can be suitable for various current protection thresholds.

A switching device, comprising a shell, and a contact system and two electromagnetic systems which are respectively arranged in the shell, wherein the two electromagnetic systems are oppositely arranged on two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move; the upper armatures of the two electromagnetic systems are connected by means of a linkage shaft; the contact system comprises static contacts and moving contacts that are arranged on contact supports; the linkage shaft is connected to the contact supports, and the two electromagnetic systems respectively drive the contact supports to move by means of the linkage shaft, so that the contact supports drive the moving contacts to be in contact with or separated from the static contacts, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

The invention relates to a relay. The electric appliance comprises a contact assembly which comprises a first movable spring part, a second movable spring part, a first static spring part and a second static spring part, the first movable spring part is opposite to the first static spring part, and the second movable spring part is opposite to the second static spring part; in the process that the electromagnetic system drives the first movable spring part and the second movable spring part to move in the direction close to the first static spring part and the second static spring part, the first movable spring part and the first static spring part make contact before the second movable spring part and the second static spring part. In the process that the electromagnetic system drives the first movable spring part and the second movable spring part to move in the direction away from the first static spring part and the second static spring part, the second movable spring part and the second static spring part are separated before the first movable spring part and the first static spring part. According to the relay, the initial contact resistance of the contact assembly can be reduced, and the stability of the contact resistance of the contact assembly in the contact or separation process is improved.

The utility model relates to a relay. The relay includes: a base; the contact assembly comprises a first movable spring part, a second movable spring part, a first static spring part and a second static spring part which are arranged on the base, the first movable spring part is opposite to the first static spring part, the second movable spring part is opposite to the second static spring part, and at least part of the first static spring part can generate flexible deformation; the electromagnetic system is arranged on the base and used for driving the first movable spring part and the second movable spring part to move in the direction close to or away from the first static spring part and the second static spring part. And the stroke difference that the electromagnetic system drives the first movable spring part and the first static spring part to make contact is smaller than the stroke difference that the electromagnetic system drives the second movable spring part and the second static spring part to make contact. According to the relay, the first static spring part can absorb contact stress through flexible deformation, and the first static spring part and the first movable spring part are prevented from being damaged and deformed due to stress.

The invention relates to the technical field of artificial electromagnetic materials, and discloses an electric control-based phase coding metasurface structure, which comprises a top unit structure layer, a first dielectric substrate layer, a middle ground layer, a second dielectric substrate layer and a bottom bias layer which are sequentially arranged from top to bottom, and is characterized in that the top unit structure layer comprises two C-shaped metal patches; openings of the two metal patches are arranged back to back, a PIN diode is connected between the two metal patches, each metal patch is connected with the bottom bias layer through a metal via hole, and the bottom bias layer is externally connected with a voltage source. The electromagnetic response of the metasurface unit can be quickly and conveniently changed by adopting an electric control mode, the problem that once a traditional metasurface is designed and manufactured, the electromagnetic wave response and the electromagnetic function of the traditional metasurface are solidified, and the requirement of a complex electromagnetic system cannot be met is solved, a new thought is provided for intelligent metasurface design, and the intelligent metasurface can be widely applied to the field of intelligent metasurface design. And the requirement of intelligent components on high integration level in practice is met.

A dual-power change-over switch operating mechanism belongs to the technical field of low-voltage apparatuses. Which comprises a turntable and a transmission plate, the turntable drives the transmission plate to rotate when rotating, and a driving shaft is eccentrically arranged on the turntable, and is characterized in that a matching groove facing an opening of the turntable is formed in the transmission plate, one of two opposite inner walls of the matching groove forms a switching-on transmission surface, and the other inner wall forms a switching-off transmission surface. One end of one of the two opposite inner walls, which is far away from the opening, is deflected towards one side of the closing transmission surface to form an inclined opening transmission surface, and the driving shaft pushes the opening transmission surface to enable the execution switch of the dual-power change-over switch to be opened. The operating mechanism has the advantages of effectively reducing the reaction torque to the operating mechanism when the circuit breaker is opened, reducing the force characteristic requirement of an electromagnetic system of the operating mechanism, improving the reliability of the operating mechanism and reducing the cost.

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 utility model provides a permanent magnet type electromagnetic system and a contactor. The permanent magnet type electromagnetic system comprises a static iron core, two coil windings, a movable iron core and a magnetic conduction driving assembly. The two coil windings are arranged on the static iron core; the movable iron core is arranged opposite to the static iron core along a first direction; the magnetic conductive driving assembly is connected with the movable iron core, a first magnetic field force is generated between the magnetic conductive driving assembly and the static iron core, the first magnetic field force is used for driving the magnetic conductive driving assembly to move towards the movable iron core so as to reset the movable iron core, and a second magnetic field force is generated between the movable iron core and the static iron core so as to reset the movable iron core. And a third magnetic field force is generated between the static iron core and the coil winding. The third magnetic field force is opposite to the first magnetic field force, and the second magnetic field force is opposite to the first magnetic field force. The moving stroke of the movable iron core can be effectively improved.

The utility model belongs to the technical field of contactors, and discloses a contactor base and a contactor. The contactor base comprises a bottom plate, a first mounting seat and a second mounting seat. Wherein a first mounting part and a second mounting part are arranged on the bottom plate; the first mounting seat is detachably mounted on the first mounting part, and the first mounting seat is used for mounting an electromagnetic system of the contactor; and the second mounting seat is detachably mounted on the second mounting part and is used for mounting a circuit structure and / or accessories of the contactor. The contactor base is formed by splicing, so that the strength is ensured, the mold cost can be reduced, and the contactor base is convenient to process, simple in structure and convenient to assemble.

The invention relates to the technical field of electrical elements, and discloses a switching-on mechanism, the switching-on mechanism is used for connecting an electromagnetic system, the electromagnetic system comprises a yoke plate and a push rod penetrating out of the yoke plate, the switching-on mechanism comprises a support, a button assembly and a limiting maintaining assembly, and the support is used for connecting the yoke plate; the button assembly is movably connected with the support and has an initial position and a switching-on position, the button assembly can move from the initial position to the switching-on position under the action of external force so as to push the push rod to switch on, the limiting and maintaining assembly is movably connected with the support, and the moving direction of the limiting and maintaining assembly and the moving direction of the button assembly form an included angle. And at the closing position, the limiting maintaining assembly abuts against the button assembly in the moving direction of the button assembly and limits and blocks the button assembly from moving from the closing position to the initial position, and convenience is provided for the power-off maintenance process of the electromagnetic relay in an integrated installation mode.

The invention provides a switching device of a contactor and the contactor, and relates to the technical field of low-voltage electric appliances, the switching device comprises a rocker arm assembly and a travel switch which are arranged in a linkage mode, the rocker arm assembly is further used for being in linkage with a contact system and an electromagnetic system, the electromagnetic system comprises a pull-in coil and a holding coil which are connected in parallel, and the travel switch is connected with the pull-in coil; the electromagnetic system drives the rocker arm assembly to rotate, so that the rocker arm assembly drives the contact system to be closed, the rocker arm assembly drives the travel switch to act, so that the suction coil is disconnected, and closing is completed through the holding coil. The suction coil and the holding coil jointly act to drive the rocker arm assembly to rotate initially in a high-power mode, once the rocker arm assembly triggers the travel switch, the suction coil is disconnected, and closing continues to be conducted through the low-power holding coil so as to save energy. The rocker arm assembly triggers the travel switch, so that a pure mechanical structure is used for controlling coil attraction, switching of two working modes is kept, the number of electronic devices is reduced, reliable working of products is guaranteed, and cost is reduced.

The application belongs to the technical field of wind turbine simulation, and provides a wind turbine full-closed loop simulator and method based on a field programmable gate array, which comprises a field programmable gate array chip, an ARM chip and a digital-analog interface connected with the field programmable gate array chip; the application adopts the field programmable gate array chip, and realizes transient real-time simulation of the electromagnetic system of the wind turbine by means of the powerful parallel computing capability of the field programmable gate array chip; compared with the prior art, the application can quickly verify the effect of the control strategy by using the built-in controller, and can access the actual wind turbine controller through the digital-analog interface to perform hardware-in-the-loop simulation and test the control effect; meanwhile, the ARM chip is used as a real-time operation carrier of the wind turbine controller algorithm, and the field programmable gate array chip and the ARM chip interact with real-time data through a digital-analog channel to realize a wind turbine closed loop real-time simulation platform.

The invention discloses a small anastomat based on an electromagnetic system. The small anastomat comprises an anastomat main body, an electromagnetic adjusting device, a fixed sleeve and a magnetic ball, the anastomat body comprises a bearing tube and a handle, the handle is fixedly installed at the lower end of the bearing tube, the fixed sleeve is fixedly installed at the front end of the bearing tube, and the electromagnetic adjusting device is installed in the rear end of the bearing tube; the magnetic ball is fixedly and detachably mounted in the fixed sleeve; through the interaction of the magnetic ball and the hard metal sleeve (the metal sleeve is electrified), the pancreatic duct (or bile duct) after broken end ligation can be smoothly sucked in, and then the thermal electrode and the cutting knife which are arranged in the fixed sleeve are used for cutting and anastomosing the intestinal wall and the pancreatic duct (or bile duct), so that the anastomosing effect is achieved; according to the anastomat, anastomosis can be carried out through mutual cooperation of the small magnetic ball and the hard metal sleeve, and after the small metal ball is attracted in a magnetic mode, corresponding tissue is cut off in a mechanical or electric heating cutting mode and then anastomosis is carried out.

The invention discloses an aluminum water filtering method and device, and relates to the technical field of aluminum water purification, and the method comprises the following steps: carrying out coarse filtration on aluminum water containing impurities; the aluminum water subjected to coarse filtration is pretreated; carrying out primary filtration on the pretreated molten aluminum; the aluminum water subjected to primary filtration enters an intermediate area and is activated by an electromagnetic coil to attract metal impurities; carrying out secondary filtration on the activated molten aluminum; and the aluminum water subjected to secondary filtration flows out of the discharge hole. The device comprises a feed port, a filter unit, an electromagnetic system, a discharge port and a control terminal. The filtering efficiency is improved, the service life is prolonged, and the maintenance cost is reduced.