47 results about "Magnetic field effect" patented technology

The invention relates to the technical field of burn and scald treatment, in particular to an intelligent hydrogel dressing for targeted regulation and control of Mongolian medicine release. The dressing comprises a core-shell microsphere drug loading system used for realizing physical segmentation of a functional area; the dual-release system is used for realizing surface adsorption of quick-release drug nanoparticles and internal wrapping of sustained-release microspheres; a hydrogel matrix for forming a nanofiber network; and the magnetic control regulator is magnetic nanoparticles dispersed in the hydrogel matrix, and regulates the aperture of the hydrogel network through the action of an external magnetic field. According to the intelligent hydrogel dressing for targeted regulation and control of Mongolian medicine release, the Mongolian medicine compound intelligent hydrogel dressing is developed on the basis of a TRIZ innovative method; through a core-shell microsphere drug loading system and a dual release design, high drug loading capacity and accurate drug release control are synchronously realized.

The utility model relates to hydrogen fluoride production technical field discloses a pipeline descaling system for hydrogen fluoride production, include: evaporative cooling device has the accommodation cavity, fills with domestic water in the accommodation cavity, the cooling pipe inside fills with freon, first pipeline sets up the outside of evaporative cooling device, the import of first pipeline communicates with the below outside end surface of evaporative cooling device, and the export of first pipeline communicates with the outside end surface of the above of evaporative cooling device, first pipeline circulates domestic water through the drive part, and the parallelly connected setting of permanent magnet descaling device is in first pipeline, the utility model discloses through setting permanent magnet descaling device, utilizes the magnetic field effect, changes the scale layer crystallization form, makes it difficult to adhere to the pipe wall, the freon in cooling pipe can more efficiently carry out the cooling at this moment, and the heat exchange effect is high.

This invention provides an ultrasonic-gradient magnetic field synergistic treatment device and method for edible liquids, relating to the field of edible liquid processing technology. The device includes an ultrasonic treatment unit, a gradient magnetic field treatment unit, and a closed-loop enhanced circulation unit connecting the two. The ultrasonic treatment unit is used to cavitation the liquid; the gradient magnetic field treatment unit includes a magnetization channel and a magnetic field generating component, the magnetic field generating component being used to form a continuously varying magnetic field distribution along the liquid flow path within the magnetization channel; the closed-loop enhanced circulation unit is used to create a directional circulating flow of the liquid between the ultrasonic treatment unit and the gradient magnetic field treatment unit, ensuring that the liquid passes through the ultrasonic action area at least twice within one circulation cycle, thereby allowing the liquid to alternately receive ultrasonic and gradient magnetic field effects during circulation, forming a nonlinear cumulative synergistic treatment effect. This invention helps improve the uniformity and processing effect of edible liquids.

The utility model relates to the technical field of simple harmonic motion analysis under the action of a magnetic field, in particular to a simple harmonic motion analysis device and equipment based on a torsional pendulum under a magnetic field condition, and the device comprises a magnetic field torsional pendulum mechanism, a data acquisition mechanism and a control mechanism, the magnetic field torsional pendulum mechanism comprises a torsional pendulum assembly and a magnetic field generation module, and a metal ball in the torsional pendulum assembly is located in a magnetic field generated by the magnetic field generation module. The data acquisition mechanism comprises an encoder and a photoelectric door, and the encoder is mounted on a rotating shaft of the metal ball and is in contact with the metal ball; the photoelectric door is arranged on a motion path of the metal ball, and when the encoder synchronously rotates along with the metal ball, the edge of a coded disc of the encoder passes through a detection area of the photoelectric door; and the control mechanism is connected with the encoder and the photoelectric door. According to the utility model, automatic data acquisition and processing can be realized, and the motion state of the pendulum ball can be accurately monitored in real time.

The utility model provides a magnetic fresh-keeping container and refrigeration equipment. The magnetic fresh-keeping container comprises a storage device provided with a storage space; the at least one magnetic field device is pivotally connected with the storage device and used for generating a magnetic field in the storage space, and the magnetic field device is provided with a first position covering at least part of the storage space in the first direction and a second position covering at least part of the storage space in the second direction; the rotating shaft rotates relative to the storage device and is switched between a first position and a second position, and the first direction is perpendicular to the second direction. The magnetic field device can generate a magnetic field in the storage space at the first position and the second position. Namely, the magnetic field device can enable the food materials in the storage space to be subjected to the magnetic field effect in the low-temperature storage process at the first position and the second position, the magnetic field fresh-keeping effect is achieved, the fresh-keeping effect of the food materials is improved, and more flexible magnetic field configuration can be provided.

The utility model discloses a magnet device for magnetron sputtering coating, which belongs to the technical field of magnetron sputtering coating, and comprises a back plate, a magnetic bar base and magnetic bars, the magnetic bar base is connected onto the back plate through a plurality of adjusting bolts, the magnetic bar base is provided with three horizontal clamping grooves for correspondingly placing the magnetic bars, the magnetic bars comprise square tubes, and the square tubes are arranged in the clamping grooves. The magnets are arranged in the square tubes, and the magnetic poles of the magnets arranged in the adjacent square tubes face opposite directions. A fixing position is provided through the effect of the back plate, the generated peripheral magnetic field intensity is changed by adjusting the distance between the magnetic rod base and the back plate, the collision ionization effect is changed, the thickness of the film layer is adjusted accordingly, and the production application range is wide; the magnet device adopts the stainless steel square tube to package the magnet, effectively prevents the magnet assembly from being damped and corroded, ensures the position stability of the magnet, avoids the influence of position change on the magnetic field effect, and improves the stability and reliability of the device; and the magnet is convenient to disassemble and assemble and can be reused, so that the production cost is reduced.

The utility model provides machine tool constant pressure equipment, and belongs to the technical field of machine tool constant pressure. Comprising a bottom plate; the buffer area is arranged on the bottom plate; the pump body is arranged on the buffer area; the connecting piece is arranged at the output end of the pump body in a communicating mode. Through the arrangement of the connecting piece, when pump body pulsation enables cooling liquid pressure and flow velocity fluctuation to be transmitted to the connecting piece, the inner layer can effectively absorb initial pressure impact and high-frequency vibration, a first buffering defense line is provided, when the impact is transmitted to the middle layer, the flexible damping fin starts to deform, vibration energy is further absorbed, and the vibration energy is further absorbed. Meanwhile, the magnetic field intensity is changed by the electromagnetic coil, so that the magnetorheological material is gradually hardened under the action of an initial magnetic field, vibration energy is effectively absorbed and dissipated, the influence of pulsation on the pressure of cooling liquid in the conveying pipe is reduced, and pipeline damage is reduced.

In one aspect, an angle sensor includes a first linear sensor and a second linear sensor. A first magnetic-field direction of a target magnet measured by the first linear sensor is substantially equal to a second magnetic-field direction of the target magnet measured by the second linear sensor. The first linear sensor, the second linear sensor and the target magnet are on an axis. The angle sensor determines an angle of a magnetic field.

The application provides a cementing plug releasing device, method and system, which comprises a main body, a releasing cavity in the main body, a releasing opening on one side of the releasing cavity, a plug body arranged in the releasing cavity and having magnetism, and a pointer assembly arranged on the main body and having a freely rotating pointer, which can be limited from freely rotating by the magnetic field of the plug body in the releasing cavity. According to the technical scheme of the application, the plug releasing can be quickly, accurately and intuitively judged by the change of the posture of the pointer based on the magnetic field effect, and correct decisions can be made on the basis of accurate judgment, so as to ensure the safety of cementing construction and the quality of cementing.

The invention provides a refrigerator ice maker and an ice making method thereof, and particularly relates to the technical field of refrigeration equipment. The ice maker comprises a base, an ice making assembly and a motor, the base is provided with an air inlet and a water filling nozzle; the motor is mounted at the rear end of the base; an output shaft of the motor is inserted into the rear end of the ice making assembly; the front end of the ice making assembly is rotationally connected with the front side wall of the base; the ice-making assembly comprises an ice-making bottom box and an ice-making grid, and the ice-making grid is movably arranged at the top of the ice-making bottom box; an electromagnetic component is arranged at the bottom of the ice-making bottom box, and a permanent magnet is arranged between the ice-making bottom box and the ice-making grid and corresponds to each electromagnetic coil of the electromagnetic component; and the ice-making grids are connected with the ice-making bottom box in a sucking manner or are separated from the ice-making bottom box in a lifting manner under the action that like poles repel each other or opposite poles attract each other of the electromagnetic coils and the permanent magnets. A traditional ice-making box is divided into two parts, and water in the ice-making bottom box is uniformly distributed under the action of a magnetic field in cooperation with a plurality of vertically-through ice lattices, so that ice blocks with the same size are obtained.

A magnetic implant device (1), which provides analgesic effects by increasing nitric oxide synthesis using pulsed magnetic field effects, accelerates the fusion of an implant with a bone and eliminates the negative effects of foreign bodies within the tissue, comprising: at least one coil (2) generating pulsed magnetic field effects; a control unit (7), which accelerates the bonding of the dental implant to the bone by means of the magnetic effect generated by said coil (2), allowing a change in the electromagnetic field strength of the generated pulsed magnetic field, and which has an adjustment button to adjust the frequency and power of the magnetic implant device (1), and a switch button to open and close the device, an applicator (9), which is adapted to the form of the jaw bone, the device can be used for treating all teeth of the upper and lower jaws, and provides uniform pulse electromagnetic effect for the application area of the device.

The invention provides a foundation pit leakage detection device and a leakage judgment and positioning method. The leakage detection device comprises a magnetic excitation well, a magnetic excitation system, magnetic field measurement cloth, a simulated electromagnetic field data processing system and a control analysis system. The magnetic excitation system applies excitation current in the magnetic excitation well; the control analysis system carries out comparative analysis on a measurement result and a simulation result of the magnetic field, and if 90% or more data errors are smaller than 0.05, leakage is judged to be generated; the magnetic excitation system further comprises an electrode, and when leakage is judged through the judgment method, the diaphragm wall seam position corresponding to the depth where the electrode is located is the leakage position. Based on the current magnetic field effect, an original precipitation well is utilized, a large-range magnetic induction field is established, the leakage point position at the joint of the underground diaphragm wall is rapidly found, traditional salvage needle type low-efficiency detection is avoided, and in addition, the detection system can be moved.

The utility model relates to a modularized automatic deironing device, which comprises a plurality of deironing modules, each deironing module comprises a shell component, an iron removal space is arranged in the shell component, and a first joint and a second joint are respectively arranged on the wall surface of the shell component; the magnetic rod assembly is mounted in the iron removal space and is used for removing iron from the slurry in the iron removal space based on the action of a magnetic field; the first joint of one iron removal module is connected with the first joint of another iron removal module, and / or the second joint of one iron removal module is connected with the second joint of another iron removal module, so that the plurality of iron removal modules are connected in series, and the slurry sequentially flows through the iron removal spaces for iron removal. By arranging the multiple iron removal modules and the liquid drainage pipeline, any number of iron removal modules can be connected in series, the compatibility and use flexibility of the iron removal device are effectively improved, and the iron removal device is suitable for various use working conditions.

The utility model provides a fresh-keeping storage device and refrigeration equipment. The fresh-keeping storage device comprises a storage container provided with a storage space; the magnetic field device comprises a magnetic field generating piece which is used for generating a magnetic field in the storage space; one of the telescopic piece and the stopping piece is arranged on the magnetic field device, the other one of the telescopic piece and the stopping piece is arranged in the storage container, and the telescopic piece can abut against the stopping piece so that the magnetic field device can be installed in the storage container and can be disengaged from the stopping piece through contraction movement so that the magnetic field device can be disengaged from the storage container. In other words, the telescopic part and the stop part are matched with each other, so that the magnetic field device can be detachably installed in the storage container, the magnetic field device installed in the storage container can generate a magnetic field in the storage space, and therefore food materials in the storage space are subjected to the magnetic field effect in the low-temperature storage process, and the magnetic field fresh-keeping effect is achieved; the fresh-keeping effect of the food materials is improved.

The application provides a strong effect pre-prepared magnetic field laying system and laying method, which comprises a power supply arranged outside a drill hole, a control system, a traction mechanism and a laying probe placed in the drill hole; the laying probe comprises a shell and a conveying device, a rotating device and a telescopic top stretching device fixedly connected in the shell; a laying work window is arranged on the shell; the conveying device comprises a servo motor, a synchronous pulley, a pulley shaft, a pulley bearing, a synchronous belt and a plurality of insulating fixed grooves fixed on the synchronous belt; the synchronous belt is arranged along the height direction of the laying probe; the rotating device comprises a motor, a main shaft and a base fixedly connected to the main shaft, and the main shaft is horizontally arranged; the top stretching device is fixedly connected to the base, and the top stretching device comprises a grabbing groove and an electromagnetic sheet arranged in the grabbing groove. The application can effectively solve the problems of small pre-prepared magnetic field effect, weak monitoring signal and poor detection stability, and can meet the application scene of large displacement of deep deformation of landslide.

The utility model relates to the technical field of automobile ignition systems, in particular to an improved double-layer magnetic circuit ignition coil device which comprises a device body, the device body comprises an aluminum plate, a plurality of mounting holes are formed in the aluminum plate, and the aluminum plate is mounted and fixed through the mounting holes; a first high-magnetic-conductivity strip and a second high-magnetic-conductivity strip are arranged above the aluminum plate, and the first high-magnetic-conductivity strip and the second high-magnetic-conductivity strip are matched with each other to form a double-layer magnetic circuit structure; a first enameled wire and a second enameled wire are arranged in the double-layer magnetic circuit structure in a matched mode. According to the utility model, the magnetic field effect is improved through the double-layer magnetic circuit design, current stability is ensured by adopting high-performance enameled wires, heat dissipation is optimized by utilizing multiple assemblies, and the safety is enhanced; the built-in thermistor monitors the temperature in real time, the silica gel pad protects precise parts, the shock resistance and the structural stability are improved, and the ignition efficiency and reliability are comprehensively improved.

The invention discloses an anti-dizziness magnetic field shielding device for human body magnetic resonance examination, and relates to the technical field of magnetic resonance examination. The head cover specifically comprises a cover body and a magnetic shielding layer, the cover body is of a cylindrical structure, a space used for containing the head is formed in the cylindrical structure, the magnetic shielding layer is arranged on the inner side face and / or the outer side face of the cylindrical structure, and the magnetic shielding layer is made of a magnetic field orientation material. The head of a patient is shielded through the magnetic shielding layer, the magnetic field effect on the patient when the patient passes through the scanner is reduced, the effect of the magnetic field on the patient is avoided, and therefore the effect of preventing the patient from dizziness is achieved.

The utility model provides a magnetic field fresh-keeping container and refrigeration equipment, and the magnetic field fresh-keeping container comprises a storage part which is provided with a storage space for storing stored objects; the magnetic field device comprises a first shell, a second shell and a magnetic field generating piece, a mounting cavity is defined by the first shell and the second shell, the magnetic field generating piece is arranged in the mounting cavity, and the magnetic field generating piece is used for generating a magnetic field in the storage space; and the fixing structure is used for fixing the magnetic field device on the storage part. The magnetic field device fixed to the storage part can generate a magnetic field in the storage space through the magnetic field generating part, so that food materials in the storage space are subjected to the magnetic field effect in the low-temperature storage process, the magnetic field fresh-keeping effect is achieved, and the fresh-keeping effect of the food materials is improved.

The utility model relates to the technical field of logistics distribution, and discloses a logistics distribution vehicle which comprises a vehicle body and further comprises two sets of installation frames installed on the vehicle body, and express boxes are installed on the installation frames; the first electric telescopic rod is fixedly mounted in the vehicle body, and a piston rod is fixedly connected with the mounting frame close to one side of the vehicle body; according to the utility model, a magnetic attraction technology and an auxiliary fixing mechanism are combined, and the electric telescopic rod is used as an executing mechanism. Through the magnetic field effect, the magnetic attraction technology achieves rapid and stable attraction of a container made of a specific material, and therefore rapid connection and separation of the container and a vehicle are achieved. The auxiliary fixing mechanism strengthens fixing and supporting between the mounting frame and the electric telescopic rod so as to guarantee the stability of the container in the loading and unloading process. And the mechanical telescopic rod can perform accurate telescopic adjustment according to the specific position and size of the container so as to realize accurate disassembly and assembly of the container.

The embodiment of the utility model provides a residual liquid treatment mechanism of a photocuring printer. The residual liquid treatment mechanism comprises a waste liquid collection box; the scraping plate is arranged at the top of the waste liquid collecting box and can move up and down along the box wall; the filter screen is arranged in the waste liquid collecting box and is used for intercepting large-particle impurities in the resin; the inclined guide plate is positioned at the bottom of the waste liquid collecting box, is downwards inclined and is used for guiding the resin to flow into the low-position area of the waste liquid collecting box; the magnetic adsorption assembly is mounted at the position, close to the waste liquid discharging opening, of the inclined guide plate and used for removing ferromagnetic particles in the resin under the action of a magnetic field; wherein the interior of the waste liquid collecting box is provided with a gradually-shrunk structure; a convex edge is arranged on the surface of the inclined guide plate; a stirring rod is arranged on one side of the magnetic adsorption assembly, a driving motor is connected to the stirring rod, and the driving motor drives the stirring rod to rotate regularly. Through the scheme of the embodiment of the invention, the problem of how to optimize the residual liquid collecting container so as to more thoroughly recover the residual resin can be solved.

The utility model relates to wastewater treatment device technical field, concretely is a kind of wastewater innocuous degradation device, including mixing pool and biological membrane processing bin, mixing pool top is provided with magnetic powder feed bin and flocculating agent feed bin, motor is fixedly installed at mixing pool top, the output shaft of motor is connected with stirring paddle, the bottom of mixing pool is V-shaped, electromagnet is equipped at the outer side of two inclined surfaces of the bottom of mixing pool, one drain pipe is connected to the bottom of mixing pool side surface, the low point of V-shaped bottom is inclined to one drain pipe, biological membrane processing bin is connected by communicating tube with mixing pool, biological membrane processing bin is equipped with biological filler, the utility model discloses by adding ferroferric oxide powder and flocculating agent to wastewater simultaneously, the magnetic floc of greater density is formed after sufficient mixing, the magnetic field effect of electromagnet and magnetic conducting net is generated, so that magnetic floc is gathered to pool bottom, accelerates precipitation speed, improves solid-liquid separation efficiency.

The invention discloses an aluminum electrolysis cell full-graphitization asymmetric cathode structure which comprises a first calcium silicate board arranged at the bottom in an electrolysis cell shell, a first nanometer heat insulation board is arranged on the first calcium silicate board, and two layers of first light heat insulation bricks with the thickness of 65 mm are arranged on the first nanometer heat insulation board. A layer of dry type anti-seepage material with the thickness of 186 mm is arranged on the first light heat preservation bricks, two layers of first vermiculite anti-seepage heat insulation bricks with the thickness of 65 mm are arranged in the long side of the electrolytic cell shell, and three layers of second vermiculite anti-seepage heat insulation bricks with the thickness of 65 mm are arranged in the short side of the electrolytic cell shell; the asymmetric heat preservation design is adopted, a multi-layer and high-performance composite heat preservation system is formed, natural heat dissipation differences caused by physical positions and magnetic field effects are compensated through differential heat preservation, an electrolytic bath is guided to form ideal furnace wall shapes with uniform thicknesses on the four side walls, and therefore the problem that heat dissipation of corners is large is solved, and the service life of the electrolytic bath is prolonged. And the service life of the electrolytic bath is prolonged.

The invention discloses a method for preventing rock burst, and belongs to the technical field of coal mining safety. Comprising the following steps: selecting a coal seam of a to-be-solved dangerous rock burst mine, measuring the gas pressure of the coal seam, and drilling a coal sample for coal body impact energy index test; evaluating the impact risk grade of the target coal seam according to the target coal seam gas pressure and the impact energy index of the coal body; if the impact risk of the target coal seam is higher than the set level, an alternating magnetic field transmitting device is arranged at the set position of the target coal seam to conduct gas desorption on the coal seam. According to the invention, through dual parameter measurement of the gas pressure and the impact energy index, accurate assessment of the impact risk is realized, movement and desorption of gas molecules in the coal body are promoted by using the magnetic field effect, the action range is wide, no mechanical disturbance exists, and the desorption efficiency is high.

The invention discloses a double-stator composite magnetic field modulation motor based on multilayer magnetic barriers, and belongs to the technical field of motor manufacturing. The motor sequentially comprises an outer stator, a rotor and a modulation stator from outside to inside, and the outer stator, the rotor and the modulation stator are separated by air gaps. The outer stator comprises armature teeth and an armature winding, and the armature winding is a single-layer distributed winding; a first layer of radial excitation permanent magnets are uniformly embedded among teeth of the modulation stator, a second layer of radial excitation permanent magnets and a third layer of radial excitation permanent magnets with opposite magnetizing directions are arranged on the inner side and the outer side of the rotor, and rectangular air magnetic barriers are arranged on the two sides of the three layers of permanent magnets; the rotor modulation blocks are provided with uneven holes, and the rotor modulation blocks are connected through two magnetic bridges. According to the motor, the three layers of permanent magnets are integrated on the rotor and the modulation stator, so that multiple excitation magnetic fields are overlapped to enhance the magnetic field effect, the air gap flux density is improved, and the torque is improved; meanwhile, the rectangular air magnetic barriers on the stator and the rotor and the uneven holes in the rotor can reduce the torque ripple of the motor, and the purposes of high torque density and low ripple are achieved.

The position identification assembly comprises a shell, a rotating assembly and a magnetic ring, the shell is provided with a plurality of cavities and through holes communicated with the cavities, the rotating assembly comprises a rotating shaft, a stator and a rotor, the rotating shaft is arranged in the cavities of the shell, and the rotor is arranged in the middle of the rotating shaft. The stator is arranged between the rotor and the inner side wall of the shell and is used for driving the rotor to rotate, and the magnetic ring is arranged at the left end part of the rotating shaft and is fixedly connected with the rotating shaft, so that the magnetic ring and the rotor jointly form a structure for reflecting the position change of the rotor through the magnetic field effect of the magnetic ring and preventing the magnetic ring from axially slipping. The problems that in the prior art, the relative position of the magnetic ring and the rotor of the electronic cooling oil pump is not accurately positioned, so that the control precision is poor, and axial falling prevention of the rotor is not considered are solved.

The slit jet impingement cooling device comprises a water inlet pipe, a water outlet pipe, a cover plate, an upper partition plate, a backflow pipe, a lower partition plate, a miniature magnet and a cavity, the cavity is divided into three parts by the upper partition plate and the lower partition plate, the upper part is a backwater gathering layer, the middle part is a jet distribution layer, and the lower part is a jet layer; the backflow gathering layer and the jet flow layer are connected through a backflow pipe. Array jet flow impact and nanofluid are used for strengthening heat transfer, meanwhile, the uniformity of jet flow impact heat transfer is improved through the combined action of rotational flow and a magnetic field, an ascending rotational flow guide piece is adopted on the bottom face to guide fluid to generate ascending rotational flow so as to prevent particles from precipitating on a heat exchange face, and meanwhile certain heat transfer can be strengthened as a fin. According to the invention, the permanent magnet magnetic field effect and the nano magnetic fluid flow are combined and applied to the slit jet flow impact process, so that the heat transfer performance is improved, the heat transfer uniformity is improved, and technical support is provided for cooling micro heat exchange equipment with high heat flux density.

The invention discloses an aggregate reinforced porous inorganic composite material with high magnetic conductivity and sedimentation prevention. The lightweight concrete comprises the following components in percentage by weight: 33.3%-35.8% of cement, 25%-26.9% of fly ash, 9.8%-10.5% of a foaming agent, 17.5%-18.8% of water, 4.5%-11.2% of modified lightweight aggregate, 0.2%-0.3% of a water reducing agent, 0.02%-0.03% of a thickening agent and 2.9%-3.1% of an accelerator. According to the high-magnetic-conductivity anti-settling aggregate reinforced porous inorganic composite material prepared by the preparation method disclosed by the invention, the modified magnetic-conductivity lightweight aggregate is added, so that the uniform distribution of the aggregate in the porous inorganic composite material can be ensured by utilizing a magnetic field effect; the modified magnetic conductive lightweight aggregate plays a role in regulating and controlling an internal curing hydration medium and promotes an internal hydration reaction, so that the aims of light weight, homogenization and high strength of the porous inorganic composite material are fulfilled.

The utility model provides refrigeration equipment which comprises a box body, a box shell and an inner container, and the inner container is arranged on the inner side of the box shell and provided with a storage chamber; the door body is pivotally connected with the refrigerator body and used for opening and closing the storage chamber, and the door body comprises an outer door plate and an inner lining plate; the mounting part is arranged on the box shell and / or the outer door plate; and the magnetic field generating part is arranged on the mounting part and is used for generating a magnetic field in the storage chamber. The food in the storage chamber is subjected to the magnetic field effect in the low-temperature storage process, magnetic field preservation is achieved, and the food preservation effect is improved. And moreover, the magnetic field generating part is arranged on the outer side of the storage chamber and does not occupy the internal space of the storage chamber, so that the situation that the effective storage space is reduced due to arrangement of the magnetic field generating part and related structures is avoided.

This application discloses a wastewater treatment device based on natural ancient meteorite material, including a wastewater chemical pretreatment unit, a natural ancient meteorite pipe, an inlet pipe, and an outlet pipe. The wastewater chemical pretreatment unit consists of a coagulation module, a sedimentation module, and a disinfection module connected in series. Pretreated wastewater enters the natural ancient meteorite pipe, the core of which is a pipe made of natural ancient meteorite material, with a non-uniform magnetic field coil wound around its outer wall. This utilizes the unique physicochemical properties of the ancient meteorite combined with the magnetic field effect to deeply purify the wastewater. The inlet pipe connects to the inlet end of the pretreatment unit, and the outlet pipe connects to the outlet end of the natural ancient meteorite pipe. This device, through the combination of chemical pretreatment and deep treatment using the ancient meteorite magnetic field, can effectively improve the purification level of wastewater. By utilizing the synergistic effect of natural materials and physical fields, it enhances the removal capacity of pollutants, possessing the advantages of high treatment efficiency and unique materials.

The utility model relates to the technical field of detection equipment, and discloses a titration device for nickel alloy boron content detection, which comprises a bottom plate, a conical flask and a burette, the top of the bottom plate is provided with a controller, the top of the bottom plate is respectively provided with a lifting assembly and a positioning assembly, the lifting assembly comprises a support vertical plate, a support vertical plate and a support vertical plate, the base plate is fixedly mounted on the top of the base plate; and the electric guide rail is fixedly installed on the front face of the supporting vertical plate, and the positioning assembly comprises a positioning part arranged on the top of the bottom plate. The stirring device is started through the motor, the output end of the motor drives the circular plate to rotate through the connecting shaft, the permanent magnet on the circular plate rotates along with the circular plate, and the permanent magnet is magnetically connected with the stirrer placed in the conical flask, so that the stirrer rotates along with the stirrer under the action of a magnetic field generated by rotation of the permanent magnet; therefore, the solution in the conical flask is stirred, and the effects that the solution is uniformly mixed and the solution is fully reacted during titration reaction are achieved.