150results about How to "Improve control" patented technology

The invention discloses a method for calculating the influence sensitivity of multiple stations and multiple control parameters on the short-circuit current of an alternating current system, and the method comprises the steps: building a calculation data model of the short-circuit current of a power grid, and enabling the model to comprise at least one new energy or energy storage device equivalent to a controlled current source; based on the calculation data model and the independent variable selected by each station, utilizing an iteration method to calculate the short-circuit current increment of each station; calculating the short-circuit current of each station fault point according to the short-circuit current increment; and calculating a sensitivity index of the independent variable relative to the short-circuit current of the specified fault point according to the short-circuit current.

The invention belongs to the technical field of industrial process control, and discloses an internet-of-vehicles cooperative vehicle fleet mixed triggering formation control method under network limitation, which comprises the following steps: constructing a longitudinal dynamic model and a formation topological structure of cooperative vehicles to describe a relative relationship between the vehicles, establishing an environment limitation model, and constructing a formation model; the nonlinear state of the cooperative vehicle is observed and estimated through the mixed trigger communication condition; a hybrid triggering mechanism is constructed by using a network quality of service QoS mapping function and a self-adaptive threshold value, so that the problem of complexity explosion caused by error derivation is avoided; and finally, constructing a consistency controller model of the collaborative vehicles, and realizing stable tracking and formation collaboration of the motorcade in a dynamic network environment. According to the invention, the vehicle can still keep efficient and smooth communication and control under the conditions of bandwidth limitation, delay change or data packet loss and the like, the network utilization rate is improved, and stable control of a motorcade is realized under various communication topologies.

The invention discloses a wave pitching motion control method and system for an offshore floating type wind turbine generator, and belongs to the technical field of offshore wind power equipment control. The method comprises the following steps: signal acquisition: acquiring unit operation state, marine environment and pitching motion state parameters in real time; wave load prediction: predicting a future wave load based on the improved LSTM neural network model; evaluating a pitching motion state, pre-judging a motion trend through a kinetic model, and judging whether the motion trend exceeds a safety threshold value or not; cooperative control instruction generation: generating cooperative control instructions for fine tuning of a variable pitch angle, a generator torque and a cabin yaw angle based on an MPC algorithm; and control execution and feedback correction: driving an execution mechanism to act and dynamically correcting a control instruction. By accurately predicting the wave load, cooperatively adjusting multiple controllable components and dynamically correcting, efficient and accurate suppression of pitching motion is achieved, and the unit operation stability, the wind energy capturing efficiency and the equipment safety are improved.

This invention provides an intelligent control system for a server operating environment, belonging to the technical field of server auxiliary control tools. The intelligent control system for a server operating environment provided by this invention includes a dust removal chamber, a dehumidification chamber, a temperature regulation chamber, and a working chamber. Outside air passes through the dust removal chamber for humidification and dust removal, then enters the dehumidification chamber for humidity regulation, enters the temperature regulation chamber for temperature regulation, and enters the working chamber. The working chamber is equipped with dust monitoring components, temperature monitoring components, and humidity monitoring components. A temperature regulation and recirculation component is installed between the working chamber and the temperature regulation chamber to achieve air circulation and temperature regulation between them. A dehumidification recirculation component is installed between the working chamber and the dehumidification chamber; if the humidity in the working chamber exceeds the standard, the air in the working chamber flows back into the dehumidification chamber. A dust recirculation component is installed between the working chamber and the dust removal chamber; if excessive dust is detected, the air in the working chamber flows back into the dust removal chamber. This intelligent control system for a server operating environment provides effective control of server environmental conditions.

The application discloses a kind of based on AFS and DYC's hub electric vehicle coordination control method, belong to electric vehicle control field, the device mainly contains centroid side slip angle observation module, lateral acceleration sensor, state identification module, AFS module, DYC module and coordination control module.Main steps:1, centroid side slip angle observation module and lateral acceleration sensor vehicle state information is passed to state identification module;2, state identification module according to the state information collected, divides vehicle driving area;3, coordination control module according to the determination result of state identification module, designs the weight distribution scheme of AFS controller and DYC controller.The main advantages of the application are: firstly, centroid side slip angle and lateral acceleration two variables are simultaneously included in vehicle driving state determination;Secondly, coordination control strategy not only guarantees vehicle safety stability, but also can improve ride comfort.

This invention provides a method for forming a vertical transfer transistor, comprising: at least a portion of the gate of the vertical transfer transistor being C-shaped, the gate surrounding an active region, and a photodiode being connected to a floating diffusion region through the active region to form a readout channel for the photodiode. In this solution, designing the gate of the vertical transfer transistor as C-shaped increases the control area of ​​the readout channel from the photodiode to the floating diffusion region, thereby improving the control capability of the vertical transfer transistor and increasing its readout efficiency.

The invention provides a control method and device for a network-forming type grid-connected converter. According to the output voltage stable value of the grid-connected converter under the two-phase rotating coordinate system and the current reference value of the filter inductor under the two-phase static coordinate system, the voltage and current inner loop control of the grid-connected converter is realized, the control performance of the grid-connected converter can be improved, and the stable operation of the grid-connected converter is ensured. According to the invention, the actual value of the output voltage of the grid-connected converter under the two-phase static coordinate system is calculated according to the actual value of the current of the filter inductor and the actual value of the voltage of the primary winding, so that the state feedback control of the grid-connected converter is realized, and the dynamic characteristics of the grid-connected converter can be improved. And the control dimension of the network construction type grid-connected converter can be effectively increased.

The application provides a belt type pellet roasting parameter dynamic tracking method and device and related equipment, relates to the metallurgical industry manufacturing and informatization technical field, and first collects the operation parameters of the belt type roaster at detection points, wherein the operation parameters include roasting parameters and machine speeds at each detection time; then, based on the positions of the detection points and the machine speeds at each detection time, the target detection time when the pellets arrive at the detection points is determined; further, the roasting parameters and the machine speeds at the target detection time are extracted and recorded. The application can realize dynamic tracking of the pellets after entering the belt type roaster, has very important significance for optimizing and stabilizing process parameters and improving production management and control ability.

The invention discloses a method for simulating phosphorus and chromium migration during farmland irrigation with acid mine wastewater, which comprises the following steps: mixing a plant-derived organic material with deionized water to obtain a soluble organic matter; h2O2 oxidizes Fe < 2 + > to prepare pure Schwertmannite, and the pure Schwertmannite is placed in a phosphate solution to obtain phosphorus-loaded Schwertmannite; mixing the phosphorus-loaded Schwertmannite and the soluble organic matter with a chromate solution, carrying out oscillation adsorption, carrying out solid-liquid separation after adsorption, carrying out CrO and POconcentration change test on filtrate, and carrying out mineral characterization on separated solids; a three-dimensional fluorescence spectrum is adopted to track composition conversion of the soluble organic matter in the reaction process; and analyzing the component change of the supernate before and after the reaction by adopting Fourier transform ion cyclotron resonance mass spectrometry. The influence mechanism of DOM on phosphorus and chromium fate in mineral / water interface molecular fractionation is disclosed from the molecular level, and a scientific basis is provided for collaborative migration risk assessment of phosphorus and heavy metal in acid mine wastewater irrigation area farmland.

The utility model discloses a kind of adjustable resistance spin bikes, including spin bike body, flywheel is installed on the spin bike body, the bottom bracket of the spin bike body is fixedly installed with base by bolt, one end of the base is rotatably installed with rotating shaft, the outside symmetry of the rotating shaft is rotatably installed with magnetic resistance component, by hand control adjustment handlebar rotation can be tightened to steel wire rope, can drive rotating shaft rotation, in turn can drive magnetic resistance component rotation along the central axis of rotating shaft, when specified rotation angle interval, the adjustment speed of magnetic resistance area is faster, improve the control effect to flywheel, by when using spin bike body control hand simultaneously holding the handle of spin bike body and adjustment handlebar, by hand control adjustment handlebar rotation can be tightened to steel wire rope, can drive rotating shaft rotation, manually adjustable magnetic resistance area in the use process of spin bike body, convenient to use.

The utility model relates to the technical field of chemical fiber yarn disc defect detection equipment, in particular to a chemical fiber yarn disc inner supporting type clamp which comprises a grabbing part, a telescopic part and a rotating part, and the grabbing part, the telescopic part and the rotating part are used in cooperation to achieve the grabbing telescopic and rotating functions. According to the utility model, an internal supporting type clamping mode is adopted, so that extra damage to the chemical fiber scroll is effectively avoided; the supporting claw structure with the protruding points can be in multi-point contact with the inner wall of the paper tube after being opened, clamping friction force is improved, clamping stability is guaranteed, the paper tube deformation risk is reduced, meanwhile, the control capacity of the clamp for a scroll in the rotating process is improved, and the clamping device is particularly suitable for occasions needing high-precision image collecting and positioning. Through cooperation of the grabbing part, the telescopic part and the rotating part, the rotating part drives the whole to rotate, the telescopic part controls stretching, and the grabbing part is responsible for grabbing a scroll and is used for stably clamping the scroll during detection.

The invention relates to the technical field of electric power inspection and maintenance robot control, and discloses a power transmission line crawling robot lifting self-adaptive shake suppression control method and system. The method comprises the following steps: acquiring three-axis acceleration and three-axis angular velocity data of a robot platform, calculating a yaw angle and an angular velocity of the robot platform relative to a vertical balance position, and constructing an evaluation index representing the shaking strength of the platform; according to the shake strength evaluation index, driving parameters of a lifting motor are dynamically adjusted through a nonlinear mapping relation; and the swing period and phase of the robot platform are monitored, and when the platform swings to a specific phase point, an instantaneous driving pulse is applied to a lifting motor to consume swing energy. By means of the method, the maximum swing angle of the robot platform can be reduced by 60% or above, the static time after the robot platform reaches the target position is shortened by 70% or above, and the working efficiency is remarkably improved.

The invention discloses a stamping process-oriented defect feedback and digital simulation closed-loop control system and method, and relates to the technical field of closed-loop control. The system comprises a working condition synchronous sensing and feature coding module, a digital simulation prediction module, a defect feedback and decision control module, a process parameter execution module and an online learning and model evolution module. According to the method, multi-source operation data are collected, a working condition feature packet is generated, material parameters are dynamically matched after a formed digital simulation model is input, initial disturbance is injected, and defect prediction parallel to physical stamping is achieved; calculating a prediction confidence coefficient by combining measured data, and generating a precise process adjustment decision by linking defect risk distribution and applying the decision to a next period; and based on actually measured and predicted errors, continuously updating a material parameter library and forming digital simulation model parameters through online learning. According to the method, the problems that traditional stamping simulation and reality are disjointed, and process adjustment is blind are effectively solved, the product defect rate is greatly reduced, and meanwhile the production efficiency and the quality stability are improved.

The application belongs to the technical field of substrate cleaning processing device, and particularly relates to a substrate brushing device based on closed-loop feedback brush pressure, which comprises a main mounting plate, a lifting driving element, a lifting transmission structure, a lifting base frame, a rotating driving element, a rotating transmission structure, a conductive slip ring, a pressure sensor, a brush connecting shaft, a brush assembly, a pressure sensor protection sleeve and a contact elastic element. The substrate brushing device based on closed-loop feedback brush pressure can perform real-time closed-loop force control on the brushing process. When the height of the brush assembly fluctuates, the force fluctuation can be adjusted in real time according to the reading value of the pressure sensor, so that the pressure of the brush assembly on the substrate is effectively kept stable and accurate. The control ability of the brush pressure precision is higher, and the demand of the current high-process substrate cleaning can be better met. The substrate brushing device based on closed-loop feedback brush pressure has high integration, stability and reliability, is convenient to disassemble, maintain and reduce the occupied space.

The invention relates to the technical field of electric energy routers, in particular to a power distribution area flexible mutual aid system based on an electric energy router, and the system is characterized in that a DC bus in a flexible mutual aid device is connected with an external power distribution area through a plurality of bidirectional DC / AC ports, and is used for completing electrical coupling and power intercommunication; the plurality of bidirectional DC / AC ports are connected with the direct current bus in parallel, the direct current bus is connected with an energy storage port and a photovoltaic port, the energy storage port is communicated with an external energy storage device, the photovoltaic port is communicated with an external photovoltaic device, and the flexible mutual aid device is communicated with an external power grid dispatching through a controller. According to the invention, normalized flexible interconnection between feeder lines is realized through the flexible mutual aid device, potential safety hazards caused by frequent displacement of a conventional switch based on an interconnection switch are avoided, the control flexibility and rapidity of the power distribution network are improved, and the power distribution network has the advantages of open-loop operation and closed-loop operation at the same time.

This invention discloses a low-pressure casting and heat treatment process for high-strength and high-toughness aluminum alloy used in contact wire ratchet, belonging to the field of rail transit component manufacturing technology. The process uses AlSi7Mg0.3 alloy, obtaining high-purity aluminum liquid through two refining and modification treatments. In the low-pressure casting stage, a three-stage pressure control is adopted: the first stage is the liquid-raising stage, the second stage is the mold-filling stage, the third stage is the pressure-increasing and shrinkage-compensating stage, and finally, pressure holding and cooling are performed; followed by T6 heat treatment. This invention solves the casting problems of easy air entrapment in ratchet teeth and easy shrinkage porosity in the hub. The casting has a tensile strength ≥275MPa and a breaking load ≥94.5kN, meeting the requirements for a 2×10 contact wire ratchet. 5 Secondary fatigue load requirements.

The single-loop-structure-based traffic signal timing control method, device and system provided by the embodiment of the application first acquire first historical traffic flows of each driving direction of a first intersection and second historical traffic flows of each driving direction of a second intersection; then, in combination with a flow prediction model, first traffic flows of each driving direction of the first intersection are predicted; and then, the first traffic flows are input into a timing model for optimization iteration to obtain phase timing information; wherein, the timing model is provided with a first coefficient; the first coefficient represents an influence of the first traffic flows other than the first driving direction on the first traffic flow of the first driving direction; the first driving direction is any driving direction of the first intersection; and according to the phase timing information, traffic signals of the first intersection and the second intersection are controlled. The phase of the traffic signal is timed by the traffic flow, and in combination with the phase control sequence and the set first coefficient, more accurate phase timing is completed, the control effect of the traffic signal is improved, and traffic jams are avoided.

The application discloses a kind of based on data-driven adaptive cycle engine multivariable sliding mode control method, belong to aero-engine control technical field, this method is based on a certain type of adaptive cycle engine, considering the influence of actuator, based on input, output data, the dynamic linearization data model of engine is established online;Three-variable model-free adaptive sliding mode controller based on sliding mode control algorithm is designed;Adaptive weight factor is introduced, the control conservative problem of controller when the controlled object parameter occurs large-scale change is solved, and the control effect is optimized;Finally, the algorithm designed is used to realize the multivariable steady control of adaptive cycle engine under different modes.The application can solve the problem that traditional sliding mode control of aero-engine depends on accurate mathematical model, ensure the control effect while having good real-time performance.

The application relates to the field of polyurethane foaming materials, and discloses a low-VOC polyurethane foaming compound and a preparation method thereof; the low-VOC polyurethane foaming compound comprises A component and B component which are mutually packed, the A component comprises low-aldehyde polyether polyol, polyether carbonate polyol, functionalized polyurethane oligomeric polyol, reactive tertiary amine catalyst, foam stabilizer and water, and the B component comprises a low-free-monomer isocyanate component; the functionalized polyurethane oligomeric polyol is prepared by reacting polyether carbonate polyol, diisocyanate and a hydroxyl compound containing a 1,3-dicarbonyl structure and having two or more hydroxyl groups. The preparation method comprises the steps of functionalized polyurethane oligomeric polyol preparation, A component dispensing, B component dispensing and packing. By introducing the reactive oligomeric polyol with the 1,3-dicarbonyl structure into the foaming system, the volatile components brought by raw materials can be reduced, and the continuous control ability of aldehyde components in the foaming process and the post-maturation process can be improved.

This invention discloses a continuous casting process method for controlling center segregation and hot-feeding cracks in continuously cast billets. This method adjusts the casting speed and the total amount of water in the secondary cooling system to shift the solidification end of the billet to the horizontal section, ensuring that the solidification end has not yet reached the straightening section when the billet is straightened, thus avoiding the process risks associated with forced cooling followed by straightening. Forced cooling is applied to the billet surface throughout the entire horizontal secondary cooling zone and a predetermined range upstream of the solidification end, controlling the billet's exit surface temperature below 600℃. This process, through the coordinated control of casting speed and cooling, utilizes forced cooling to enhance the cold compression effect and strengthen center segregation control, while also achieving surface quenching of the billet through continuous forced cooling, eliminating the causes of hot-feeding cracks, and significantly improving the internal and surface quality of the continuously cast billet.

The embodiment of the present disclosure relates to the semiconductor field, and provides a semiconductor structure and a manufacturing method thereof, the method comprising: providing a semiconductor substrate, the semiconductor substrate being provided with a plurality of first bit lines extending along a first direction; forming a first transistor array on the semiconductor substrate, the first transistor array comprising a plurality of first semiconductor columns; forming first word lines, each first semiconductor column being connected with a corresponding first word line and a first bit line; forming a second transistor array on the first transistor array, the second transistor array comprising a plurality of second semiconductor columns, the first semiconductor columns and the second semiconductor columns corresponding to each other; and forming second word lines and second bit lines, each second semiconductor column being connected with a corresponding second word line and a second bit line, so as to form a 2T0C semiconductor structure, and the capacitor process in the manufacturing process of the semiconductor structure can be simplified.

The invention relates to an end-cloud collaborative dynamic multi-protocol gateway system and method, and the system comprises a cloud module and a local gateway module. The cloud module is used for analyzing the received user intention instruction to generate an equipment control instruction corresponding to the user intention instruction; and the local gateway module is used for transparently transmitting the equipment control instruction issued by the cloud module to the Internet of Things equipment, or transparently transmitting the equipment state information uploaded by the Internet of Things equipment to the cloud module. According to the method and the device, instruction analysis, protocol selection and final instruction assembly are uniformly completed by the cloud, and the local gateway is only used as a transparent transmission execution layer, so that the efficiency of dynamic multi-communication protocol control of the Internet of Things equipment is improved, and the problem of how to improve the communication efficiency of the Internet of Things equipment in a multi-protocol communication scene is solved.

This invention discloses a method for controlling the main steam temperature of an ultra-supercritical unit. An extraction valve is added to the extraction steam pipeline of the high-pressure heater to achieve precise extraction steam throttling adjustment. Thermodynamic parameters of the boiler and turbine systems are collected and cleaned. The feedwater heating insufficiency and reheat steam flow rate changes corresponding to the unit extraction steam throttling flow rate under different high-pressure heater extraction steam throttling schemes are calculated. Furthermore, the heat absorption changes of the economizer and part of the superheater heating surfaces after the reheater are calculated. Finally, the predicted value of the main steam temperature change corresponding to the unit extraction steam throttling flow rate under different high-pressure heater extraction steam throttling schemes is obtained. Based on the real-time deviation of the main steam temperature, the high-pressure heater extraction steam throttling scheme and the required extraction steam throttling flow rate are selected. By adjusting the extraction steam throttling flow rate of each high-pressure heater, more precise control of the main steam temperature is achieved, alleviating the problem of main steam overheating that easily occurs during rapid load increases. This is of great significance for improving the operational flexibility of ultra-supercritical units.

This invention discloses a method and system for suppressing drill string stick-slip vibration based on nonlinear model predictive control, comprising the following steps: S1: Establishing a drill string dynamics model and constructing a nonlinear model predictive control controller based on the drill string dynamics model; the nonlinear model predictive control controller includes a prediction model, an objective function, and constraints, wherein the prediction model is a nonlinear state-space form of the drill string dynamics model; S2: Acquiring downhole data of a target well with a duration greater than a duration threshold and its corresponding rotary table control torque, and using an optimization algorithm to correct the drill string dynamics model and the prediction model; S3: Predicting the downhole state at the current moment based on the corrected drill string dynamics model, and using the downhole state at the current moment as the input of the nonlinear model predictive control controller, outputting the control torque at the current moment. This invention can suppress drill string stick-slip vibration faster and more accurately than traditional sliding mode control.

The invention provides a coal-fired boiler ammonia-doped combustion compatible matching system based on radiation characteristic compensation, which relates to the technical field of boiler combustion and comprises an ammonia-doped combustion operation characteristic database construction module, a real-time operation optimization module and a performance evaluation and self-optimization module. According to the method, the ammonia-doped combustion operation characteristic database is constructed, then whether the boiler performance parameters are recorded or not is judged based on the key boiler parameters, and ammonia-doped strategy dynamic adjustment and wall temperature safety regulation and control are carried out based on the ammonia-doped combustion operation characteristic database and the boiler performance parameters. Finally, when the fuel enters the coal-fired boiler, the mixing condition of ammonia and coal is evaluated, whether the fuel mixing strategy is optimized or not is judged, meanwhile, the oxygen content condition of the coal-fired boiler is monitored and adjusted, the position of high-temperature flames in the boiler is adjusted and controlled through flexible grading of the ammonia / coal fuel, matching of heat transfer distribution in the boiler and the coal-fired working condition is achieved, and the coal-fired boiler is obtained. The ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is improved, and the problem that the ammonia-doped combustion compatibility matching effectiveness of the coal-fired boiler is low is solved.

The application discloses a kind of application calcium chloride production positive pressure stove and control method, it is related to calcium chloride granulation technical field, including hot blast furnace and granulation tower, hot blast furnace includes burner, hot blast furnace end plate assembly, hot blast furnace shell assembly and hot blast furnace inner shell assembly, wind cooling jacket is formed between hot blast furnace shell assembly and hot blast furnace inner shell assembly, multiple cyclone barrel is arranged in hot blast furnace inner shell assembly, expansion joint is provided at the outlet of hot blast furnace, and the end of expansion joint away from hot blast furnace is connected with heat-resistant pipeline.The application provides a kind of application calcium chloride production positive pressure stove and control method, solves the problem that the equipment failure rate is high, energy consumption is large, and maintenance cost is high in prior art calcium chloride granulation hot blast system due to being equipped with high-temperature fan and high-temperature regulating air valve;Hot blast furnace is provided with wind cooling jacket, multiple cyclone barrel and cyclone sheet, and dilution air passes through wind cooling jacket, and after entering hot blast furnace hearth from hot blast furnace head part stage, is mixed with high-temperature combustion flue gas.

The application discloses a driving mechanism, comprising a motor and a hinged seat; the output end of the motor is provided with an adapter, the adapter has a torque output end, the hinged seat has a torque input end, the adapter transmits the torque of the motor to the hinged seat through the concave-convex cooperation of the torque output end and the torque input end, and a buffer pad is arranged on the torque transmission path of the torque output end and the torque input end, so that the mutual impact between the adapter and the hinged seat is filtered during the torque transmission process; the application provides a driving mechanism which solves the problem of poor impact resistance of the transmission driving mechanism.

The invention belongs to the technical field of wireless digital broadcast communication security, and relates to an Auracast broadcast privacy protection system supporting key distribution and access control, which comprises a channel establishment and authentication module for establishing an out-of-band security control channel; the precursor key issuing module is used for issuing a static session precursor key to the target receiving equipment and the broadcast source equipment through channel encryption; the session key generation module is used for deriving a slice session key in combination with the public synchronization factor and the precursor key; the data packaging and sending module is used for encrypting the audio by using the slice session key, assembling a data frame and sending the data frame; the local key synthesis module is used for extracting a synchronization factor and locally synthesizing a slice session key; the audio stream analysis and output module is used for decrypting the data and managing a key life cycle; and the secret key life cycle management module is used for monitoring the state through a channel and executing erasing. According to the invention, the problem of realizing low-delay dynamic encryption and instant permission revocation without relying on periodic key redistribution in wireless broadcasting is solved.

This utility model relates to a descending furnace, comprising a frame, furnace body, heating components, insulation cover, rotary lifting mechanism, sealing mechanism, crucible, and laser. The furnace body includes a furnace bottom, furnace cylinder, and furnace cover. The furnace cylinder and insulation cover are made of heat-resistant transparent optical material. The sealing mechanism is installed between a through hole and a drive shaft, and includes a flexible section configured to shorten as the drive shaft rises and extend as the drive shaft descends. An evacuation port is provided on the sealing mechanism. By employing an insulation cover and furnace cylinder made of heat-resistant transparent optical material, real-time visual monitoring of the entire crystal growth process is achieved. The sealing mechanism maintains a stable vacuum environment in the heating chamber, effectively suppressing heat loss caused by thermal radiation and convection. The laser beam promotes the nucleation and directional growth of crystal materials through light-induced effects, and simultaneously enables in-situ observation and diagnosis of solid-liquid interface morphology, interface fluctuations, and internal crystal defects.

The utility model provides a kind of bath salt fused salt equipment, belong to fused salt equipment technical field, including fused salt cylinder and pulverization cylinder, pulverization cylinder is set in the upper of fused salt cylinder, fused salt cylinder top is provided with first feed inlet, first feed inlet bottom is detachably connected with uniform material frame, uniform material frame below is provided with limit frame, limit frame below is provided with base, stirring rod is arranged between base and limit frame, base one side is integrally formed with discharge gate, electromagnetic heating ring is arranged in fused salt cylinder, pulverization assembly for crushing bath salt is arranged in pulverization cylinder, bath salt entering fused salt cylinder is dispersed preliminarily by uniform material frame, bath salt is stirred and heated by stirring rod and electromagnetic heating ring, so that user can obtain more uniform fused salt effect, improve the fused salt efficiency of the device, user can crush bath salt by pulverization assembly, improve the crushing capacity of bath salt of the device.