46results about How to "No temperature" patented technology

The invention discloses a method for synthesizing a composite molecular sieve by a microwave method and catalytic performance application thereof. In the method for preparing the composite molecular sieve by the microwave method, kaolin is taken as a raw material, inorganic silicate is taken as an additional silicon source, and the prepared composite molecular sieve is applied to the alkylation reaction of phenol and tertiary butanol. The method comprises the following steps of: adding a certain amount of sodium silicate into the kaolin serving as the raw material to synthesize a Y type molecular sieve precursor; and preparing a composite molecular sieve Y/MCM-41 by the microwave method by using hexadecyl trimethyl ammonium bromide serving as a template. The synthesized molecular sieve has two pore structures, namely micropores and mesopores; the specific surface area of a sample is more than 550 m<2>/g; the average pore size is roughly 2.7 nm; and the sample has a regular and ordered hexagonal pore structure. The synthesized molecular sieve has good catalytic effect on the alkylation reaction of the phenol and the tertiary butanol, and particularly the selectivity of 4-tertiary butyl phenol is up to 86.3 percent.

The invention discloses a solar energy-soil source heat pump seasonal balance heating system comprising a solar energy heat collector, a water tank and a solar energy heating heat-exchange coil pipe, wherein a ground source heat-pump heat-exchange coil pipe is arranged in the water tank and communicated with a plate heat exchanger by a second circulation pipeline; a second water pump, a second water pump, a first constant pressure tank and a magnetic valve are arranged on the second circulation pipeline; the plate heat exchanger is communicated with a heat pump assembly by a third circulation pipeline; a third water pump, a third constant pressure tank and a magnetic valve are arranged on the third circulation pipeline; the plate heat exchanger is communicated with an underground burying pipe by a fourth circulation pipeline; the underground burying pipe is buried underground and is provided with an underground insulating device; and a fourth water pump, a second constant pressure tank and a magnetic valve are arranged on the fourth circulation pipeline. The solar energy-soil source heat pump seasonal balance heating system can store redundant heat generated by a summer solar energy heat collecting system in winter to use, effectively save energy sources, increase the use efficiency of solar energy and solve the detects of the traditional earth source heat pump.

The invention discloses an automatic system for welding a metal part and a coaxial cable. The automatic system comprises a tin feeding device, a heating device, a movement positioning device and an electric control device, wherein the tin feeding device is arranged at a first station and is used for adding tin paste to the connecting position of the metal part and the coaxial cable, the heating device is arranged at a second station and is used for performing induction heating on the connecting position to which the tin paste is added, the movement positioning device is used for respectively clamping the metal part and the coaxial cable and moving to the first station and the second station in sequence, and the electric control device is used for controlling all of the devices of the automatic system. The invention further discloses an implementation method for welding the metal part and the coaxial cable. According to the automatic system and the implementation method, the non-contact induction heating is realized, an endothermic effect of a metal structural member is basically solved, additionally, the welding spot heating uniformity is guaranteed, and the welding reliability of products is increased.

The invention discloses a mobile terminal and a distribution method and device of a motion signal of the mobile terminal. The motion signal is collected by a gyroscope in a camera module of the mobile terminal. The method comprises the steps of acquiring, by a processor of the mobile terminal, a type of a currently running application, wherein the running of the application needs to use the motion signal; according to the type of the application, acquiring the motion signal collected by the gyroscope; and/or sending a control command to the gyroscope, and controlling the gyroscope to send the collected motion signal to an optical anti-shaking module of the mobile terminal. Through adoption of the mobile terminal and the distribution method and device of the motion signal of the mobile terminal, the gyroscope does not need to be arranged on a mainboard, so that the cost is saved; and the impact of mainboard temperature and stress is prevented, so that the motion signal is more accurate, and the distribution method of the motion signal is simple and effective.

The invention discloses a preparation method of a SnS2/SnO2 lithium ion battery anode material in hollow-sphere structure. The method includes: 1) adding SnCl4.5H2O in a mixed liquid of deionized water and anhydrous ethanol to fully dissolve the component for forming a solution A, and dissolving NaOH in the solution A to prepare a solution B; 2) under stirring, adding urea to the solution B and continuously stirring the solution to prepare a uniform mixed solution C, and performing a homogeneous hydrothermal reaction on the mixed solution C; 3) after the reaction is finished, washing and drying a product to obtain a SnO2 precursor; 4) heating the SnO2 precursor to burning to prepare SnO2 powder; 5) dispersing the SnO2 powder in ethanol with stirring to prepare a uniform mixed suspension D;6) adding SnCl4.5H2O and TAA to the suspension D with stirring until the components are completely dissolved to obtain a homogenous suspension E; 7) performing a microwave thermal reaction on the suspension E, when the reaction is finished, moving-out and washing and drying the product to prepare the SnS2/SnO2 lithium ion battery anode material in hollow-sphere structure.

The present invention provides a far-infrared heating facial mask. Through a carrier, carbon fiber paper is composited into one body in one time, the carbon fiber paper is at the middle layer of the carrier, and two end faces of the carbon fiber paper are electrically connected to a power supply through electrodes. By using the carbon fiber paper in a whole piece, a temperature relatively uniform area is large after electrifying, the regulation of voltage and temperature is realized, and the adjustment can be carried out according to different adaption degrees of people to temperature. The generated far-infrared wavelength is close to a human body wavelength, and thus an ideal physical health effect can be achieved. The facial mask also can be used as the partner of other facial masks, and the nutrients can be efficiently adsorbed by a human face. The far-infrared heating facial mask has the advantages of simple structure, convenient manufacture and use, long-term use and low cumulative cost and is an ideal physiotherapy and health care, cosmetology and nursing product.

The invention provides an intelligent full-color glass LED (Light Emitting Diode) display screen and a glass LED display unit. An unpackaged driving IC (Integrated Circuit) bare chip and an LED wafer are reversely arranged on an ITO (Indium Tin Oxides) circuit using glass as a base board, so that the packaging process of the existing LED lamp bead and the existing driving IC is omitted; and the processing and installing process of a conventional display screen module is also omitted. Therefore a circuit on the glass is very simple, and almost no power consumption or almost no temperature is generated on the ITO circuit, so that the display image of the display screen is stable, and the small-space intelligent full-color glass display screen can be realized on a single-layer circuit.

The present invention relates to a coking depressor for an ethylene cracking furnace, and a method for using the same. The depressor consists of a thiol compound, a quinoline compound, a disalicylic acid compound and an organic solvent. The coking depressor not only overcomes the shortcomings in the prior depressor that the manufacturing cost is high, the injection operation is difficult, the distribution in the cracking furnace tube is uneven, and the depressor erodes the inner wall of the furnace tube, etc., but also effectively prolongs the service life of the cracking furnace and improves the yield of ethylene, the usage of the material and the load of an ethylene device. The producing amount of CO and CO2 is largely reduced, and thus the depressor is safe and environment-friendly.

The invention relates to an electromagnetic system which is used for driving an armature-contact system in a relay (contactor). The electromagnetic system consists of a cylindrical permanent magnet, a cylindrical electromagnet, a coil and a capacitor. The capacitor is used for slowly charging to store energy and fast discharging so as to provide corresponding power for starting up and releasing, and the permanent magnet is used for keeping a continuous suction state, so that low-consumption and silent running of the relay (contactor) is realized. Additionally, the electromagnetic system has a simple control circuit, large input impedance, stable and reliable control manner, and no potential safety hazards, such as overheating and aging, overcurrent, action competition and the like, so that the work reliability and the service life of the system are enhanced, the technical performance, such as restitution coefficient and control coefficient and the like of the relay (contactor) is continuously improved, and the electromagnetic system is more convenient and more feasible.

The invention relates to a clean environment-friendly vehicular fuel gas smokeless furnace capable of combusting waste batteries and medical waste. Two groups of flue gas converters are arranged in a tail gas combustor, tube sections of the flue gas converters are separated gradually from the top down, the upper part of flue gas at the top layer is provided with a material storage tank, the top of the gas is provided with a tail gas temperature controller, two sides of a tail gas convector pipe are provided with a clean discharger respectively, and the upper part of the clean discharger is provided with a smoke temperature controller, the smoke temperature controller is communicated with a tail gas buffer through a convector hose, a smoke humidity controller is communicated with the tail gas buffer through the convector hose, and the tail gas buffer has a multi-reladling structure and is communicated with a vehicular gas furnace through an exhaustion pipe. The smokeless furnace can combust wide waste, is adapted to closely cleaning, incinerating and treating medical waste, counterfeit drug, poison and waste batteries through an on-vehicle manoeuvrable mode in city and countryside, overturns the prior combustion and discharge mode on application, saves land resources, saves power and water, reduces tail gas and fuel gas of vehicles, and can combust 1 to 10 tons of combustible substance such as the waste batteries and the medical waste.

The invention discloses a cooling device of a computer mainframe box. The cooling device of a computer mainframe box comprises a circuit board, the rear portion of the circuit board is fixedly connected to a mainframe case, the front portion of the circuit board is fixedly provided with cooling fins, the outside of the cooling fins is fixedly provided with a heat absorbing tube, the intermediate portion of the heat absorbing pipe is provided with a temperature sensor, and the left end of the heat absorbing pipe penetrates the mainframe case and movably connected to a cooling device via a joint. The cooling device comprises a housing, the upper portion of a housing chamber is fixedly provided with a pure water tank, a water feeding cover is fixedly mounted on the pure water tank, the bottom of the pure water tank is fixedly connected to a cooling pipe, the lower end of the cooling tube penetrates a control box and fixedly connected to a water pump, the upper end of the water pump is fixedly connected to the joint, a controller is fixedly mounted in a chamber in the left side of the control box, and the outside of the cooling device is fixedly connected to a USB line. The cooling device of a computer mainframe box is simple in structure, convenient, practical, good in cooling effect and has a good popularization market.

The invention discloses a positively-charged carbon dot prepared by using polylysine as a carbon source. The preparation method comprises the following steps: weighing a certain amount of polylysine,dissolving the polylysine with a proper amount of deionized water, placing a uniformly-mixed polylysine aqueous solution in a microwave field, carrying out heating, after completion of a reaction, carrying out cooling, then adding a proper amount of deionized water, carrying out ultrasonic treatment for a period of time, carrying out centrifuging, collecting a carbon dot aqueous solution, carryingout supermicro membrane dialysis, and carrying out freeze-drying so as to prepare positively-charged carbon dot powder. The invention also discloses an application of the positively-charged carbon dot in bacteriostasis of food. The preparation method provided by the invention has the advantages of simple preparation process, high product purity, short reaction time and controllable carbon dot size; and the carbon dot with super-rich positive charges and prepared by using the preparation method provided by the invention can be used to inhibit spoilage microorganisms in the food, has high selectivity, and has great significance on and extensive application prospects in the aspects of food safety, fluorescent composite materials, etc.

The invention provides a method for preparing a graphene electrode in a high-temperature piezoelectric sensor. The method includes the following steps that a pretreated high-temperature piezoelectric crystal plate of the high-temperature piezoelectric sensor is placed into a plasma chemical vapor deposition cavity, the cavity is closed, and a vacuum pump is started; when air pressure inside the cavity is lowered to 10<-5> Torr or below, shielding gas and carbureted hydrogen gas are connected in to adjust the pressure intensity inside the cavity; and a vacuum reacting furnace is started for heating and warming, a plasma source is switched on to perform constant temperature deposition, and accordingly the graphene electrode can be obtained. According to the preparation method of the graphene electrode, the high-temperature piezoelectric crystal plate is used as a substrate, a small or large number of layers of graphene are grown on the surface of the crystal plate without metal catalysis as the electrode through the plasma enhanced chemical vapor deposition (PECVD) technique directly, adhesive force between a graphene thin film and the crystal plate is good, and electrical conductivity of the graphene thin film is excellent.

The invention discloses a water resistor capable of self-cyclically flowing and cooling for industry. The distilled water and other liquid resistor are used as the resistor, so that the resistance liquid can cyclically flow in the system in the premise of not using a water pump by using the effects of the temperature field, the gas pressure and the gravity; the heat produced in the working process is immediately taken away by the resistance liquid and cooled through an external condensation pipe, thereby improving the radiating performance; and meanwhile, since the overall system is an opening system, the resistance liquid is limited by the saturated vapor pressure under the atmosphere, the highest internal temperature of the water resistor is only the boiling point, and the pressure intensity is the environment pressure; the design of the opening system avoids the problem that the water resistor structure cannot be continuously used for a long time since the water resistor structure is damaged by the internal high temperature and high pressured caused by the insufficient radiation in the traditional closed water resistor, the performance of the service life of the water resistor are guaranteed, and the normal operation of the high-power pulse equipment under high-frequency and long-time condition is guaranteed.

The invention relates to a Moebius vibration isolator based on a wave mode conversion mechanism and an energy local effect. The Moebius vibration isolator is formed by combining multiple Moebius banded structures, and the multiple Moebius banded structures are connected into an integral structure through an upper part bearing force platform and a lower part bearing force platform; and the upper part bearing force platform and the lower part bearing force platform are respectively connected with upper part inclined plane regions and lower part circular arc regions of the Moebius banded structures. The Moebius vibration isolator provided by the invention couples the bending rigidity and torsional rigidity of the Moebius banded structures, the energy local region property is taken as an vibration isolation structure of a vibration isolation mechanism, and the Moebius vibration isolator has the advantages of large load-carrying ability, small static transformation, low inherent frequency, higher damping, and is capable of realizing low-frequency broad band transfer admittance and can not generate creepage, aging and temperature sensibility and the like.

The invention relates to a refrigeration display cabinet, and the cabinet comprises a cabinet body and a cabinet door, wherein a containing cavity is formed in the cabinet body. The cabinet door is used for closing the opening of the accommodating cavity. The cabinet further comprises an air inlet partition plate, an air duct partition plate, an installation profile, an evaporator and an evaporation fan. The air inlet partition plate and the air duct partition plate are both installed in the containing cavity, the top edge of the air duct partition plate and the rear side edge of the air inletpartition plate are connected together through the installation sectional material, and the containing cavity is divided into an air duct cavity and a display cavity through the air inlet partition plate, the installation sectional material and the air duct partition plate. The face, facing the display cavity, of the installation profile is an air guide face which gradually inclines upwards fromthe rear face of the containing cavity to a cavity opening of the containing cavity, an air inlet hole is formed in the air inlet partition plate, and an air outlet hole is formed in the air duct partition plate. The evaporation fan is obliquely installed at the communication position of the air blocking channel and the air inlet channel, and the evaporator is installed in the air blocking channel. The temperature difference between the upper layer and the lower layer in the display cavity can be almost ignored, and storage of wine beverages is facilitated.

The invention discloses an accurate temperature control continuous seed frying machine which comprises a rack and is characterized in that a temperature control steaming and frying mechanism is installed on the rack, the feeding end of the temperature control steaming and frying mechanism is connected with a heating feeding mechanism, and the discharging end of the temperature control steaming andfrying mechanism is connected with a temperature control discharging mechanism; a high-temperature steam supply mechanism connected with the temperature control steaming and frying mechanism is further mounted on the rack; the equipment has the advantages that automatic continuous production is realized; the temperature is accurately controlled, coking or supercooling or superheating is avoided,which is an important condition for guaranteeing the oil quality grade and the oil yield; the machine has multiple specifications, and can meet the requirements of different scales and batch production; the machine is made of food-grade stainless steel and meets the requirements of sanitation and environmental protection; the sealing performance of the machine is good, and the leakage phenomenon is avoided; the production environment is good and the labor intensity is low; the production efficiency is high and the energy consumption is low; and the feeding mechanism is provided with an electromagnetic preheating device so that the steaming and frying time is saved.

The invention discloses an asphalt road, and belongs to the field of roads. The asphalt road comprises a roadbed, a subgrade and a road surface. The subgrade is arranged in the roadbed and is provided with a horizontal layered structure. The subgrade is provided with a first mixed slag layer, a rubble layer, a second mixed slag layer and a concrete layer from bottom to top, and a geogrid and low-voltage shielded wires are arranged in the second mixed slag layer. A plurality of solar photovoltaic modules are arranged in the middle of the road surface in the road extension direction, and the solar photovoltaic modules are connected with a photovoltaic inverter through the low-voltage shielded wires. The asphalt road has the characteristics of being high in flatness, capable of avoiding the circumstances of insufficient partial compaction degrees, serious temperature segregation and the like, good in road surface temperature sensing property, good in elasticity and ageing-resistant performance, not prone to melting or flowing at high temperatures, good in toughness and not likely to be cracked at low temperatures, capable of meeting the using requirements of high-grade roads, and capable of fully utilizing high temperatures of the road surface to conduct solar power generation.

The invention discloses an oxidizing roasting method of hard zinc vacuum smelting furnace slag. Based on the characteristic that hydrogen peroxide, manganese dioxide, chlorate and other oxidants havehigh microwave absorbability and the principle that the low-frequency microwave radiation penetrating power is high, ferric oxide and lead oxide are also matter with high microwave absorbability, hydrogen peroxide or manganese dioxide or chlorate is added into the broken hard zinc vacuum smelting furnace slag according to the quantity being 1-1.5 times of the total quantity of iron and lead, the materials are mixed to be uniform, microwaves with the frequency of 2-10 GHz and the power of 500-2,000 W are used for radiation for 20-60 min, the temperature is controlled to be 300-500 DEG C, and the oxidation rate of ferric alloy and lead alloy in the vacuum smelting furnace slag reaches 95% or above. After the vacuum smelting furnace slag in an alloy state is mixed with the oxidants, microwaves can be efficiently absorbed, instant high temperature is generated, and the alloy is rapidly and uniformly oxidized into metal oxides, so that hydrometallurgy leaching is promoted. The oxidizing roasting method has the characteristics that in microwave fields, the heat utilization rate is high, the time is short, the energy consumption is low, cleanliness is achieved, and materials and environments cannot be polluted.

The invention discloses a hydrolysis device for continuously synthesizing glyphosate and an application of the hydrolysis device. The hydrolysis device comprises more than three tubular circulating reactors which are connected in series, wherein each tubular circulating reactor comprises a gas-liquid separator, a circulating pump and heating equipment which are connected by a pipeline in sequence to form a circulating reaction system, and a gas-phase outlet is formed in the upper part of the gas-liquid separator; a series mode of the tubular circulating reactors is that the heating equipment of the last tubular circulating reactor is connected with the gas-liquid separator of the next tubular circulating reactor through a pipeline with a regulating valve; and the regulating valve is in liquid-level linkage with the gas-liquid separator of the last tubular circulating reactor. According to the hydrolysis device disclosed by the invention, the reaction temperature can be precisely controlled, and large-scale production is easily realized; and the hydrolysis device adopts circulating reaction, so that the reaction can be stably and sufficiently performed, and the glyphosate is synthesized with a high conversion rate and high selectivity.

The invention belongs to the technical field of crude oil heating and specifically relates to a digitalized well site crude oil electromagnetic heating device and heating method. The digitalized wellsite crude oil electromagnetic heating device provided by the invention is organically provided with an electromagnetic heating body used for heating crude oil passing through the electromagnetic heating body, a frequency conversion control cabinet being in wire connection with the electromagnetic heating body and used for changing the input power frequency supply frequency and a remote monitoringsystem being in electric signal connection with the frequency conversion control cabinet and used for receiving and transmitting electric signals and controlling starting and stopping of the frequency conversion control cabinet and can conduct one-way internal heating without a heat source and is high in thermal efficiency, safe, friendly to environment and energy-saving. The digitalized well site crude oil electromagnetic heating device and heating method have the characteristics of being high in electric heating thermal efficiency, low in failure rate and easy and convenient to maintain.

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to an ultralow-phosphorus continuous casting steel billet, and a production method and an application thereof. The production method comprises the steps of molten iron pretreatment, a converter duplex dephosphorization and decarburization procedure, LF refining, RH vacuum refining and continuous casting, the converter duplex dephosphorization and decarburization procedure comprises dephosphorization converter smelting and decarburization converter smelting, and the lance position, the oxygen supply amount, the bottom blowing flow, the slag, the alkalinity and other parameters in the dephosphorization converter smelting process and the decarburization converter smelting process are limited. The content of impurities such as phosphorus, sulfur, nitrogen and hydrogen in the continuous casting steel billet prepared by the method is extremely low, the cleanliness of molten steel is improved, the prepared steel billet is stable in quality and high in purity, the center of the steel billet does not have the defects of looseness and the like, and the rephosphorization problem caused by single slag or double slag of a traditional converter in the prior art is solved.

The invention discloses a piezoresistive pressure meter chip structure and a preparation method thereof. The piezoresistive pressure meter chip structure comprises a pressure-sensitive resistor, a heavy doping contact area, a metal lead, a silicon strain film, a glass base, and a cavity formed between the silicon strain film and the glass base. According to the piezoresistive pressure meter chip structure, a pressure sensor of the structure has the advantages of being simple in process and small in chip size by being compared with the structure of the typical device; meanwhile, the anodic bonding and wafer grinding technologies are performed; the design processing method is compatible with the processing technology of the standard silicon piezoresistive pressure sensor; the device processing cost is low; the yield is high.

The present invention belongs to the field of rheumatism nursing and discloses a nursing salt bag for treating rheumatism and a nursing method thereof. The nursing salt bag comprises a nano cambric jacket and a nano cambric liner sleeved in the nano cambric jacket, the nano cambric liner is internally provided with an electric heating device, a jacket of the electric heating device is provided with a protective insulating layer, both sides of the protective insulating layer are respectively provided with sea salt layers, at least one layer of a Chinese herbal medicine filling layer is spaced and interspersed in the sea salt layers on each side; at least one side surface of the nano cambric jacket is provided with a nano cambric shield, the nano cambric shield is internally provided with amoxibustion bag, and an upper surface of the nano cambric shield is provided with a nano massage head. Heating is conducted with a plurality of carbon fiber heating wires arranged in a fold line, which can enable the heating of the salt bags to be more uniform, besides, each carbon fiber heating wire is connected in parallel, even if one carbon fiber heating wire fails, and the other carbon fiberheating wires can still work normally and do not affect effectiveness of the salt bags.

The invention discloses a ceramic capacitor and a preparation method of the ceramic capacitor, the ceramic capacitor comprises a ceramic capacitor body and a resin encapsulating layer encapsulated at the outside of the ceramic capacitor body, and a buffering material layer is also arranged between the ceramic capacitor body and the resin encapsulating layer. Compared with the prior art, according to the ceramic capacitor and preparation method of the ceramic capacitor, as the buffering material layer is arranged between the ceramic capacitor body and the resin encapsulating layer, the product manufactured has excellent vibration absorption and buffering capability, thereby avoiding damage on the ceramic capacitor caused by impact during mould pressing, transport and application process.

The invention provides a biomass utilization device and method based on coal-fired boiler high-temperature flue gas. The biomass utilization device and method based on coal-fired boiler high-temperature flue gas comprises a coal-fired boiler system and a biomass dry distillation system; the coal-fired boiler system comprises a hearth and a boiler fuel preparing device arranged on a feeding openingof the hearth, the biomass dry distillation system comprises a biomass dry distillation reactor, a biomass inlet is formed in the top of the biomass dry distillation reactor, a dry distillation carbon outlet is formed in the bottom of the biomass dry distillation reactor, a high-temperature flue gas outlet is formed in the lower portion of the side wall of the biomass dry distillation reactor, and a gas phase mixture outlet is formed in the upper portion of the side wall; multiple high-temperature flue gas extraction points are arranged on the hearth, through pipeline mixing, the extraction points are connected with the high-temperature flue gas inlet, the dry distillation carbon outlet is connected with the input end of the boiler fuel preparing device, and the gas phase mixture outlet is connected to the hearth combustion area through a pipeline. The system composition is simple, no combustible gas explosive risks exist, the biomass energy utilization efficiency is high, the biomassenergy large-scale development cost and risks are sufficiently reduced, and the product added value is effectively improved.

The invention discloses a water heat exchanger for an air-source heat pump system with one end connected with a reversing valve and the other end connected with a throttling valve. A refrigerant passage is provided inside the water heat exchanger, and has independent dual passages that share a water system; one end of the each passage is respectively connected with the corresponding throttling valve and the corresponding reversing valve; and when one passage of the water heat exchanger is at evaporation state, the other passage is at condensation state. In the water heat exchanger for the air-source heat pump system, the water heat exchanger adopts dual-passage design, so that the two passages of heat exchangers with different functions can perform energy exchange through sharing the conductive medium (water) when the system performs reversing defrosting, and the refrigerant in the air-source heat pump system can be not subjected to acute transfer and acute pressure and temperature changes, so as to solve the unreliable problem of the air-source heat pump system during defrosting process.

The invention discloses a magnetic damping belt pulley. The magnetic damping belt pulley comprises a belt pulley and a hub sleeved in the belt pulley, wherein the belt pulley and the hub can rotate relative to each other; a first magnet and a second magnet are arranged between the belt pulley and the hub; when the hub rotates, the first magnet is pushed to rotate at first; then the first magnet pushes the second magnet to rotate through the action of a repulsive force; and the second magnet further pushes the belt pulley to rotate, equivalently, the torque of the belt pulley or the hub is conveyed via the magnetic effect between the magnets. Therefore, the problems of small resistance, poor stability and short service life of a damping belt pulley at present are solved.

The invention discloses an electromagnetic heater power with the over-voltage protection function. The electromagnetic heater power includes a circuit, wherein the circuit is electrically connected with an overvoltage and undervoltage protection circuit, the circuit is electrically connected with a circuit board, the overvoltage and undervoltage protection circuit is electrically connected with anovervoltage and undervoltage protection circuit board, the overvoltage and undervoltage protection circuit board has an overvoltage and undervoltage protection circuit board; or the overvoltage and undervoltage protection circuit board has two sub overvoltage and undervoltage protection circuit boards, and one overvoltage and undervoltage protection circuit board has an overvoltage and undervoltage protection circuit; or one overvoltage and undervoltage protection circuit board has two sub overvoltage and undervoltage protection circuits, and the two sub overvoltage and undervoltage protection circuit boards respectively have sub overvoltage and undervoltage protection circuits. The electromagnetic heater power is advantaged in that when a supply voltage is too high or too low, power supply can be cut off quickly, and an insulated gate bipolar transistor (ie: IGPT) is prevented from being burned out.