169 results about "Electromagnetic generator" patented technology

A method for operating an electromagnetic power generator for a wheel and to a power generator for a wheel, in particular of a vehicle. The power generator comprises a rotatably mounted stator, which is held in an equilibrium position by virtue of the eccentric mass center of gravity of the stator, and a rotor, which rotates in the stator and is driven by the wheel. In order to realign a stator which is rotating in an undesired manner and is overrunning during a malfunction produced by shocks for example, the stator is supplied with a current.

The invention relates to the technical field of alloy machining, and discloses drilling machine equipment for machining special alloy and a using method.The drilling machine equipment comprises a drilling machine box body and an alloy plate arranged in the drilling machine box body, a fixing plate is fixed in the drilling machine box body, a round hole is formed in the fixing plate, and the alloy plate is arranged below the fixing plate; an electric sliding block sliding in the round hole is arranged on the side wall of the round hole, a sliding rail arranged along the diameter is arranged on the electric sliding block, a sliding part is arranged on the sliding rail in a sliding mode, a rotating box body is arranged at the bottom of the sliding part, and a right-angle triangular block is arranged in the rotating box body in a rotating mode. The second electromagnetic generator is started to generate a magnetic field which is the same as that of the first magnet plate and repel the first magnet plate, the inserting plate extends into the inserting groove, positioning of the side frame and the pillow block is completed, the side frame is fixed, and even if the elastic pull rope swings, the side frame cannot be driven to swing.

The invention belongs to the technical field of arc fuse additive manufacturing, and particularly discloses a magnetic control arc fuse additive manufacturing system and a manufacturing method thereof.The manufacturing system comprises a CMT welding machine, a magnetic generation device, a molten pool image detection device and a computer, and the magnetic generation device comprises an electromagnetic generation part and a power supply part; the electromagnetic generation part comprises an annular iron core, a coil, a first U-shaped iron core and a second U-shaped iron core, the power supply part is electrically connected with the coil, and after the coil is powered on, the annular iron core can generate an axial magnetic field in the axis direction of a welding wire at the welding wire; the U-shaped opening of the first U-shaped iron core and the U-shaped opening of the second U-shaped iron core can generate a double-sharp-corner magnetic field in the N-S-N-S direction below the welding wire. The magnetic generation device can generate a composite magnetic field formed by superposing a double-sharp-corner magnetic field and an axial magnetic field after being electrified, more energy can be used for melting welding wires, the welding wire melting efficiency is improved, a molten pool can be driven to rotate, the purpose of stirring the molten pool is achieved, grains are refined, and the performance of a formed part is improved.

The invention relates to the field of electronic accessories, in particular to a modular peripheral integrated box and portable electronic equipment, the integrated box takes a first shell as a protective shell of the portable electronic equipment, so that the portable electronic equipment is protected, and connection and integrated combination of the integrated box and the portable electronic equipment are facilitated; the second shell is used as a carrier for modular expansion, and a circuit structure with an expansion function is arranged; different modules can be quickly connected with the integration box through the multi-purpose splicing grooves, so that the function expansion or the performance improvement of the portable electronic equipment can be carried out; emergency power supply can be provided for the portable electronic equipment through the electromagnetic generator module without an external power supply; the electric quantity capacity of the portable electronic equipment can be improved through the additional battery cell, and the endurance of the portable electronic equipment is improved; other functions or performances of the portable electronic equipment can be expanded through the modularized peripheral hardware; the integrated box can meet the requirements of a portable electronic equipment user for upgrading and increasing the functions of the portable electronic equipment.

The invention relates to a multi-degree-of-freedom composite wave energy converter, and belongs to the technical field of wave power generation. Comprising a mounting frame and a power generation assembly, and the power generation assembly comprises an electromagnetic power generation unit, a nanometer friction power generation unit and a piezoelectric power generation unit; the electromagnetic power generation unit comprises a gravity pendulum and an electromagnetic generator; the gravity pendulum is rotationally mounted on the mounting frame around the gravity center axis of the wave energy converter, and one end of the gravity pendulum is connected with a rotor of the electromagnetic generator; the nanometer friction power generation unit comprises a plurality of power generation parts made of friction materials, the power generation parts are installed on the installation frame, and under the action of external force, the power generation parts move relatively to generate electric energy; the piezoelectric power generation unit comprises a piezoelectric generator and a water flow turbine; a rotor shaft of the piezoelectric generator is connected with the water flow turbine, a rotor of the piezoelectric generator is made of piezoelectric materials, and magnets are arranged on the rotor and a stator respectively. The multi-degree-of-freedom wave capturing device can comprehensively and efficiently capture waves in multiple degrees of freedom, and is high in energy conversion efficiency and wide in application range.

The invention discloses an electromagnetic-friction nanometer hybrid generator for wind energy collection, which belongs to the technical field of wind energy, and comprises a stator shell, and a friction nanometer generator module and an electromagnetic generator module are packaged in the stator shell. The electromagnetic generator module is coupled with the friction nanometer generator module and is embedded with the friction nanometer generator module, and the electromagnetic generator module is connected with the friction nanometer generator module through a coaxial connector. According to the electromagnetic-friction nanometer hybrid generator oriented to wind energy collection, the basic configuration and the working principle of the hybrid friction nanometer generator are redesigned, and the soft contact friction nanometer generator based on the ternary dielectric triboelectrification effect is a hybrid electromagnetic generator; efficient energy conversion is realized by utilizing the triboelectrification characteristic of the soft contact material.

The invention provides an electromagnetic shielding performance test method and system for a shielding cover of an intelligent wearable terminal, and relates to the technical field of performance test.The method comprises the steps that an electromagnetic shielding performance test case is obtained; performing energy-saving layout optimization on the electromagnetic wave generator in the non-shielding area to obtain the layout position of the electromagnetic wave generator; deploying an electromagnetic wave generator at the electromagnetic wave generator layout position, transmitting electromagnetic waves through the electromagnetic wave generation frequency and the electromagnetic wave generation power, and collecting the shielding area to monitor the magnetic field intensity; and when the ratio of the monitored magnetic field intensity to the tested magnetic field intensity in the shielding area is greater than or equal to a qualified ratio, performing electromagnetic shielding abnormity identification on the shielding cover of the intelligent wearable terminal. The technical problem that energy consumption parameters of different layout positions are not considered in parameters of a traditional electromagnetic generator in the prior art can be solved, the technical target of intelligent optimal configuration of the layout positions and the parameters of the electromagnetic generator is achieved, and the technical effect of improving energy efficiency is achieved.

An arthritis pain treatment device includes: a pulsed electromagnetic generator that operates to activate cells of a body joint, generates a magnetic field to the body joint, and changes polarity of the magnetic field; a low-level laser generator that operates to reduce inflammation at the body joint, generates light of a predetermined wavelength to the body joint, and changes brightness of the light; an electric muscle stimulation generator that operates to induce contraction and relaxation of muscles of the body joint and applies current to the muscles of the body joint; a heat generator that generates heat to the muscles around the body joint in order to generate flow of blood around the body joint; and a controller that controls the pulsed electromagnetic generator, the low-level laser generator, the electric muscle stimulation generator, and the heat generator in accordance with instructions from a user.

The utility model provides an aluminum alloy semi-continuous casting device which comprises a launder, a graphite ring, a crystallizer, an electromagnetic stirring unit, an ultrasonic vibration unit and a dummy bar head. The tail end of the launder is communicated with a cavity of the crystallizer so as to lead in aluminum alloy melt, and the graphite ring is arranged on the inner wall of a first water tank of the crystallizer; the dummy bar head is arranged below the graphite ring and moves up and down in the direction of the center axis of the crystallizer. The ultrasonic vibration unit extends into the cavity of the crystallizer to act on the aluminum alloy melt; the electromagnetic stirring unit comprises a plurality of electromagnetic generators and a plurality of second water tanks, the cross sections of the electromagnetic generators are annular, and each electromagnetic generator is arranged in the corresponding second water tank; a second water tank is arranged on the peripheral side of the first water tank of the crystallizer, and a plurality of second water tanks are sequentially arranged below the first water tank of the crystallizer. The action range of an external field in the aluminum alloy melt can be expanded to the maximum extent, the heat transfer efficiency is improved, and the probability of generation of hot cracks is reduced.

The invention relates to the field of laser additive manufacturing, and particularly discloses a laser coaxial fuse additive manufacturing device and method based on double-magnetic-field collaboration.The laser coaxial fuse additive manufacturing device comprises a movement system, a coaxial fuse additive manufacturing system, a double-magnetic-field auxiliary system and a control monitoring system, and a wire feeding mechanism is arranged outside the device. The double-magnetic-field auxiliary system is composed of a magnetic pressure induction system and a symmetrical sliding type magnetic field generation system. The magnetic pressure sensing system is arranged around the welding head and generates a vertical magnetic field; the symmetrical sliding type magnetic field generation system generates a horizontal magnetic field through Helmholtz coils on the two sides. The two magnetic field systems are mutually independent and adjustable and form orthogonal configuration in space. The device is provided with a high-speed camera to monitor the state of the molten pool in real time, the magnetic field intensity and proportion are dynamically adjusted through a controller and double electromagnetic generators, and accurate control over molten drop transition and molten pool flowing is achieved. According to the invention, the quality and stability of coaxial fuse additive manufacturing are improved.

The invention relates to the technical field of electromagnetic field shielding detection, and discloses a shielding effect detection method under an impact electromagnetic field, which comprises the following steps: setting an impact electromagnetic field simulation environment, placing a shielding shell for electromagnetic shielding in the simulated impact electromagnetic field simulation environment, placing the shielding shell in the simulation environment, and carrying out electromagnetic shielding on the shielding shell; the electromagnetic detector receiving impact electromagnetism is opened, the shielding shell sleeves the outer side of the electromagnetic detector, and the output port of the electromagnetic wave generator device simulating impact electromagnetic waves is aligned to the two sides of the shielding shell. According to the shielding effect detection method under the impact electromagnetic field, a simulation environment of the impact electromagnetic field is set, then in the simulation environment, a simulation electromagnetic generator is arranged, electromagnetic impact is carried out on a shielding shell through electromagnetic generation, then electromagnetic interference data are detected through an electromagnetic detector in the shielding shell, and the shielding effect of the shielding shell is measured. The process is simple and efficient without dismounting equipment, so that the shielding effect detection of the lightning arrester impact electromagnetic field is more convenient and efficient.

A control arrangement (20) for controlling movements of an access member (14), the control arrangement comprising a base structure (22); a drive member (32) rotatable about a rotation axis (28); an input member (38) arranged to be driven along an actuation axis (40) by rotation of the drive member, and arranged to move in a lateral direction (74, 76); an output member (50) arranged to be driven by the input member along the actuation axis; an electromagnetic generator (58) arranged to be driven by movement of the output member along the actuation axis to generate electric energy; and a force transmitting arrangement (42, 52; 116) arranged to transmit a relative movement between the input member and the output member along the actuation axis to a movement of the input member in the lateral direction towards the base structure for frictional braking between the input member and the base structure.

The invention relates to the technical field of medical auxiliary instruments, in particular to an arthroscopic surgery electromagnetic navigation robot which comprises an operating bed, a first robot and a second robot are arranged on one side of the operating bed, an electromagnetic generator assembly is installed on the operating bed, and a guide needle is detachably installed at the movable end of the first robot; an electromagnetic receiver is installed on the guide pin, and an ultrasonic imaging assembly is installed at the movable end of the second robot. According to the invention, the robot is used for replacing people for operation, and a part with a navigation function is arranged, so that the operation can be more accurately implemented and completed.

The utility model relates to an automatic separation hand wheel clutch device which comprises a handle, a hand wheel, a gland, a wheel shaft, a base and a wheel shaft clutch, the gland is arranged at the upper end of the wheel shaft, the lower end of the wheel shaft penetrates through the base to be fixedly connected with the wheel shaft clutch, a pressing disc is arranged on the wheel shaft, and a first spring is arranged between the pressing disc and a positioning shaft sleeve. A trapezoidal baffle plate is arranged on the wheel shaft part above the pressure plate; limiting blocks are installed on the base on the two sides of the positioning shaft sleeve, and power-off switches are fixedly installed on the limiting blocks. An electromagnetic generator is arranged on the upper plane of the base on one side of the wheel shaft, the electromagnetic generator comprises a main shell, a shell support and an electromagnetic coil, the electromagnetic generator is fixed on the base through the shell support, the main shell is of a barrel-shaped structure, an opening faces the wheel shaft, the electromagnetic coil is installed in the main shell, and a spring seat is fixedly installed at the left end of an inner cavity of the main shell; the spring seat is fixedly connected with a second spring, the other end of the second spring is connected with a columnar iron core, and the columnar iron core is matched with the opening channel of the main shell in size.

The invention provides a surgical robot intraoperative positioning and navigation method, device and equipment based on anti-interference electromagnetic tracking and a computer readable storage medium. The intraoperative positioning and navigation method of the surgical robot based on anti-interference electromagnetic tracking comprises the following steps: arranging an electromagnetic generator in a surgical area, and generating a time-division multiplexing multi-band electromagnetic field; acquiring an original electromagnetic signal at the tail end of the surgical instrument through a magnetic field detection device; anti-interference filtering processing is carried out on the original electromagnetic signal, and a target instrument signal and environment noise are separated; calculating a space coordinate and an attitude angle of the surgical instrument based on the filtered signal; error compensation is carried out on the space coordinates through a multi-stage calibration module; and matching the compensated coordinate data with a preoperative medical image to generate a real-time positioning navigation path. According to the embodiment of the invention, intraoperative electromagnetic positioning navigation can be carried out in an anti-interference manner.

The application belongs to the technical field of intermediate frequency heating furnace, in particular to an intermediate frequency heating furnace for preheating electrolytic aluminum anode, which comprises a heating furnace body for heating anode rods, an electromagnetic coil arranged inside the heating furnace body, an air inlet pipe fixedly connected to one end of the electromagnetic coil, an air outlet pipe fixedly connected to the other end of the electromagnetic coil, a fan arranged on one side of the heating furnace body, an air outlet end of the fan in communication with the air inlet pipe, a second water tank arranged on one side of the heating furnace body, a heat treatment tank fixedly installed on the side wall of the second water tank, a thermoelectric converter arranged inside the heat treatment tank, the air outlet pipe extending through the second water tank to the inside of the heat treatment tank at an end away from the heating furnace body, the air outlet opening facing the heat absorbing end of the thermoelectric converter, and an electromagnetic generator arranged at the top end of the heat treatment tank, with a transmission rod fixedly connected to the rotor of the electromagnetic generator, so that the waste heat source can be effectively converted into electric energy, the energy utilization efficiency is improved, and the production cost is reduced.

A robot is connected with an external power supply and an upper computer through cables, adopts a modular tubular structure, and carries a sensor group, an electromagnetic generator and a power mechanism; the sensor group is used for collecting image information and sound information in the pipeline and posture information of the robot, and the power mechanism is used for driving the robot to advance in the pipeline; the cable winding and unwinding unit is used for winding and unwinding a cable; the precise positioning unit realizes precise positioning of the robot by means of electromagnetic wave transmission and comprises an electromagnetic generator and a receiver, and the electromagnetic generator and the receiver are respectively used for transmitting and receiving low-frequency electromagnetic waves; the upper computer receives cable length information output by the cable winding and unwinding unit, completes preliminary positioning of the robot in combination with a water supply network electronic map, controls advancing of the robot in combination with posture information, receives image information and sound information, completes defect detection of a pipeline, and finally outputs a health detection report in combination with accurate positioning.

The present application provides a motorcycle wiper, comprising a wiper arm assembly, a bracket mechanism, and a wiper element; the bracket mechanism is internally provided with an elastically deformable housing, the interior of the housing being filled with magnetorheological fluid; the wiper element is limitedly engaged between the two housings, and the wiper element has an elastic component; the wiper arm assembly is equipped with an electromagnetic generator; when the electromagnetic generator generates a magnetic field, the two housings move toward each other to press the elastic component in a first state; when the electromagnetic generator does not generate a magnetic field, the two housings move away from each other, causing the elastic component to elastically release and enter a second state. As can be seen from the above description, the electromagnetic generator changes the properties of the magnetorheological fluid, causing the housings to deform relative to each other, changing the state of the wiper element and increasing the contact between the wiper element and the glass; at the same time, during initial use, the relative tightening ensures that dust or sand in the gap is avoided, and the contact portion between the wiper element and the glass pushes away dust or sand in parallel, thereby achieving cleanliness of the motorcycle glass from the first use.

The invention belongs to the technical field of friction power generation, and discloses an electromagnetic friction combined type suspension energy recovery device which comprises a friction nanometer generator set and an electromagnetic generator set, the friction nanometer generator set comprises a set shell, a sliding rack and a patch electrode, the sliding rack is connected into the set shell in a sliding mode, and the patch electrode is arranged in the set shell in an attached mode. Plastic sheets distributed at intervals are arranged on the side wall of the sliding rack, the patch electrode comprises a conductive part and a copper sheet, the copper sheet is connected to the conductive part, and the plastic sheets and the copper sheet perform friction power generation; a speed increasing gear train is arranged in the unit shell, an electromagnetic generator set is arranged on the outer wall of the unit shell, the speed increasing gear train is connected to the rack in a meshed mode, and a gear shaft of a terminal gear of the speed increasing gear train is connected with an input shaft of the electromagnetic generator set. According to the electromagnetic friction combined type suspension energy recovery device, energy of a suspension system can be collected and stored, so that the energy can be used by other electrical parts of an automobile, and the energy utilization efficiency of the suspension system is improved while energy conservation and environmental protection are achieved.

The invention relates to the field of foamed ceramic preparation, and discloses a preparation device and a preparation method of building waste regenerated foamed ceramic. According to the device, a fine grinding shell is welded to the outer surface of one side of the lower end of a grinding main shell, a screen sleeve is welded to the inner surface of the fine grinding shell, a fine grinding roller movably sleeves the inner surface of the screen sleeve, and a primary grinding roller is movably connected to the inner surface of the grinding main shell; an electromagnetic generator is fixedly connected to the outer surface of the side, away from the fine grinding shell, of the lower end of the grinding main shell, a nozzle is fixedly connected to the outer surface of the output end of an igniter, and building waste materials are poured from the upper portion of the grinding main shell and are subjected to primary grinding through mutual rolling extrusion of primary grinding rollers; the materials fall into a space defined by a fine grinding shell and a screen sleeve below, a grinding ball is placed in the screen sleeve, the fine grinding roller rotates to drive the grinding ball and the materials to grind, and particles meeting the standard are extruded out by the side, close to a guide-out plate, of the fine grinding shell.

The invention discloses a mobile phone self-power-generation device based on a tourbillon inertia matrix and a mobile terminal, and belongs to the technical field of mobile terminal self-power supply. The miniature tourbillon inertia pendulum bob is combined with the electromagnetic generator, kinetic energy of daily movement such as walking, shaking and hand waving of a human body is converted into electric energy through the pendulum effect, the multiple power generation units are arranged in a mobile phone battery bin area in a matrix mode to form a high-power power generation array, and automatic management of electric quantity is achieved in cooperation with the intelligent micro electric control module. A single power generation unit can continuously generate power for 6-12 hours through one-time driving, fast-charge-level output power can be achieved after matrix combination, and the subversive effect that electricity can be efficiently supplemented by waving a hand is achieved. Dependence of the mobile phone on an external charger is eliminated from the source, the cruising ability is greatly improved on the premise that the size of the mobile phone body is not increased, the service life of the battery is prolonged, and the mobile phone can be expanded to multifunctional applications such as a power bank and a glare flashlight. The mobile terminal is simple in structure, easy in mass production and extremely high in practicability, the power supply mode of the mobile terminal is completely rewritten, and the technical innovation of next-generation portable electronic products is guided.

The invention relates to a blade-free friction-electromagnetic composite generator based on an eddy current oscillation effect, and belongs to the technical field of wind energy collection and self-powered sensing. The invention provides a blade-free friction-electromagnetic composite generator with a fully-packaged inverted trapezoidal shell to solve the problems that an existing wind energy friction nanometer generator is poor in severe environment adaptability, materials are prone to being abraded, the generator is not friendly to birds, and all-directional wind energy collection is difficult to achieve. An internal magnet ball and a stainless steel ball are driven to move relatively through an eddy current oscillation effect, and meanwhile, a peripheral multi-layer contact separation type friction nanometer generator and a central electromagnetic generator unit are excited, so that low-wind-speed starting, full-wind-direction, wear-free and high-stability wind energy efficient conversion is realized, and a self-powered environment monitoring and lighting system is successfully driven.

The utility model discloses a biological membrane coupled magnetic field reinforced artificial wetland device, which belongs to the technical field of artificial wetlands and comprises a shell, a biological membrane unit, an artificial wetland unit and an adsorption unit which are sequentially arranged in the shell from left to right. A water inlet pipe and a water outlet pipe are formed on the two sides of the shell respectively, a magnetic strengthening assembly is arranged in the constructed wetland unit, and the magnetic strengthening assembly comprises a permanent magnet, an electromagnetic coil and an electromagnetic generator. The device disclosed by the utility model has the beneficial effects that the device is connected to sewage and wastewater to be treated, efficient nitrogen and carbon removal can be realized through the multi-stage effect of cooperative treatment of the biological membrane unit, the constructed wetland unit and the adsorption unit, and meanwhile, the adjustable magnetic field strengthening assembly is arranged in the device, so that the device is more stable and reliable. The growth and metabolism of microorganisms can be promoted through an adjustable magnetic effect, and the pollutant removal efficiency of the system is further improved.

The invention relates to a wind power generation device based on a friction nanometer generator in the field of wind power generation equipment. The device comprises a plurality of wind collectors and a plurality of power generation units. A plurality of linear air channels are evenly distributed in each wind collector in the circumferential direction of the wind collector, and the power generation units are rotationally installed in the linear air channels. The center of the wind collector is provided with a central area. Wind energy directly acts on the power generation unit through the linear air duct structure, energy loss of a transmission structure is reduced, a conical channel is formed between the linear air duct structure and the power generation unit under the gravity of a small ball of a friction layer, the flow speed of airflow is increased, the swing frequency of the power generation unit is increased, and therefore the power generation efficiency is improved; compared with a traditional electromagnetic generator, the device is simple in structure, small in size, low in cost and more reasonable in overall structure arrangement, the power generation efficiency is effectively improved, and the problems that an existing wind power generation device is poor in wind energy absorption capacity and low in energy conversion efficiency during power generation, and consequently the power generation efficiency is low are solved.

The present invention provides a brushless reverse claw-pole electromagnetic generator for automobiles, belonging to the technical field of automotive motors and electrical appliances. The generator comprises a front cover, a rear cover, front claw poles, rear claw poles, an excitation winding, a magnetic yoke, a plastic frame, an armature winding, a stator, and a rotating shaft. The front claw poles extend in a trumpet-like manner to form a larger annular magnetic conductor, while the rear claw poles contract in a bottleneck-like manner to form a smaller annular magnetic conductor. This results in a reverse claw-pole electromagnetic rotor with spaced N and S poles, an equal number of poles, and uniform distribution along a circular path. This structure increases the radial spacing of the excitation winding and shortens the axial length, resulting in a uniform magnetic field distribution, high power density, and low harmonic content of the induced electromotive force. This achieves a highly sinusoidal voltage waveform under power generation conditions. The entire generator adopts a brushless structure, eliminating the easily worn carbon brush slip ring structure and providing high reliability.

The utility model relates to packing bag gluing technical field discloses a kind of gluing device for packing bag processing, including workbench main body, two conveying frames are symmetrically fixedly connected in the upper top end of workbench main body, first conveyor belt is installed in the side of two conveying frames mutually approaching, the outer wall both sides of first conveyor belt are fixedly connected with transparent second conveyor belt, in the process of gluing paper packing bag, linear motion is made to gluing mechanism by drive mechanism, and when gluing, since mounting rack will make linear motion, and gluing mechanism will be driven to end portion by electric linear guide rail to stop movement, therefore, laser emitter of mounting rack lower bottom end will work, and pass through laser penetration second conveyor belt, laser is received by first laser controller or second laser controller at this time, and first laser controller and second laser controller will control the opening and closing of electromagnetic generator, so that electromagnet will attract or not attract pressing plate.

The present invention provides a heating device. The heating device includes a cylinder, a door, an electromagnetic generating module and a radiation antenna. A heating chamber with a take-in and put-out port is defined in the cylinder, and the heating chamber is used to place an object to be processed. The door is arranged at the take-in and put-out port, and is used to open and close the take-in and put-out port. The electromagnetic generating module is configured to generate an electromagnetic wave signal. The radiation antenna is arranged in the cylinder and is electrically connected to the electromagnetic generating module to generate electromagnetic waves of corresponding frequencies according to the electromagnetic wave signal. The radiation antenna is arranged to arch in a direction close to the object to be processed, so as to eliminate the influence of the edge effect on the uniformity of the electromagnetic wave distribution in the heating chamber, and to increase the energy density and distribution range of the electromagnetic wave while improving the uniformity of the electromagnetic wave distribution while solving the production cost.

The invention relates to the technical field of pipe welding, and discloses a welding device for hollow cast iron pipe machining, which comprises two hollow cast iron pipes, the opposite ends of the two hollow cast iron pipes are both provided with inclined notches, and the two hollow cast iron pipes with the inclined notches are matched and attached. The outer side walls of the hollow cast iron pipes are coaxially sleeved with fixing assemblies for clamping the hollow cast iron pipes. In the process that the inner wall sliding frame slides on the inner wall of the joint ring under the action of an external driving mechanism, the telescopic metal sheet abuts against the inner wall of the adjusting ring, at the moment, a circuit is in an open circuit state, the electromagnetic generator on the inner wall sliding frame does not generate a magnetic field, and when the inner wall sliding frame slides to the position of the telescopic convex block assembly, the telescopic metal sheet abuts against the inner wall of the adjusting ring. And when the telescopic metal sheet on the inner wall sliding frame is connected with the telescopic convex block assembly, a passage can be generated at the moment, so that the electromagnetic generator on the inner wall sliding frame generates a magnetic field which is the same as that of the magnet block, the welding wire at the corresponding position can be pushed to slide in the radial direction, and then welding is completed.

The present invention provides a scale prevention device for a dishwasher, a scale prevention method and a dishwasher. The scale prevention device includes: a coil assembly, which includes a plurality of electromagnetic coils, and at least a part of the plurality of electromagnetic coils are respectively wound around the water delivery pipe, the water storage cup and the inner tank of the dishwasher; and an electromagnetic generator, which is electrically connected to the coil assembly and is used to control the generation of the magnetic field and the intensity of the generated magnetic field by controlling the electromagnetic coils. Based on the technical solution of the present invention, the magnetic field generated by the electromagnetic coils acts on the ions in the water. Under the action of the high-frequency electromagnetic field, the ions lose their chemical, physical and mutual attraction abilities, gradually form crystal clusters and sink to the bottom, and then are discharged through the drain pipe, so that they will not precipitate and form scale on the wall surfaces of the corresponding components, achieving the effect of preventing scale in the dishwasher.

The application discloses a high-energy electromagnetic multi-phase catalytic reinforced sludge cracking device and a sludge treatment method. The device comprises a high-energy electromagnetic generator, a high-energy electromagnetic radio frequency rod, a multi-phase catalytic reactor and a solid-liquid separator; the high-energy electromagnetic generator is connected with the high-energy electromagnetic radio frequency rod through a wave guide, and the lower part of the high-energy electromagnetic radio frequency rod is inserted into the multi-phase catalytic reactor; and the discharge port of the multi-phase catalytic reactor is connected with the separator inlet of the solid-liquid separator through a pipeline. The high-energy electromagnetic technology, the multi-phase catalytic technology and the solid-liquid separation technology are coupled, so that the sludge treatment efficiency is improved, the treatment process is simplified, and the system operation energy consumption is reduced.