42results about How to "Avoid the problem of inconvenient use" patented technology

The invention discloses a long bone fracture repositioning device, which comprises a proximal end support frame, a distal end support frame, quick drawing extension rods, steel needle fixing clamps and steel needles, wherein the quick drawing extension rods are connected between the proximal end support frame and the distal end support frame, the steel needle fixing clamps are connected to the proximal end support frame and the distal end support frame, the steel needles are clamped by the steel needle fixing clamps, the proximal end support frame and the distal end support frame are same in structure and respectively comprise a transverse chute type repositioning slide plate and two fixed gliding hole plates which are connected to the chute type repositioning slide plate, one surface of each chute type repositioning slide plate is provided with a transverse guide sliding chute, a transverse guide long hole is formed between the bottom of the guide sliding chute and the other surface of the chute type repositioning slide plate, the fixed gliding hole plates are provided with holes for connecting the steel needle fixing clamps, the fixed gliding hole plates are further provided with positioning bulges which are matched with the guide sliding chutes and can slide along the guide sliding chutes. The long bone fracture repositioning device disclosed by the invention is simple in structure, the minimally invasive idea is enhanced, the excellent rate of repositioning is improved, and requirements of fracture repositioning and various malformation correcting can be met to the maximum extent.

The invention discloses a talipes equines orthosis. The talipes equines orthosis consists of a bone fixation support, a steel needle fixing clamp and a steel needle clamped in the steel needle fixing clamp, wherein the bone fixation support comprises a tibial hole full ring arranged on the middle segment or upper segment of a tibia, a calcaneal C-type hole ring arranged on the middle segment of a calcaneus, a metatarsal proximal C-type hole ring arranged at the promxial position of a metatarsus, and a metatarsal distal C-type hole ring arranged at the distal position of the metatarsus. The talipes equines orthosis solves the technical problem that traditional talipes equines orthoses used for correcting talipes equines have difficulty in meeting the orthosis and treatment needs of talipes equines. The talipes equines orthosis has the advantages that the operation is convenient and safe, the structure is simple and ingenious, an operation is guaranteed to be finished under the microinvasive or noninvasive condition, the damage to the local soft tissue injury and blood supply is avoided to the greatest extent, the fracture healing and function reconstruction are facilitated, the curative effect is high, and the complication is low.

The invention discloses a method for switching and controlling a video output mode, which comprises: switching commands of the video output mode are received and prompting messages are provided; if certain information which is used for conducting the mode switching is generated according to the prompting messages and received, the video output mode is switched according to the switching commands of the mode; otherwise, a primary video output mode is kept. The invention also discloses a device for switching and controlling the video output mode and a video player. By using the invention, when a user carelessly touches keystrokes of a remote control in the unknowing circumferences in advance to cause that the remote control transmits the switching commands of the video output mode, the prompting messages are transmitted to remind the user, which can cause that the user knows the keystrokes on the remote control to be carelessly touched, thus avoiding the problems existed in the prior art.

The invention provides a hip joint correction and thighbone extender, consisting of a bone external fixation support, a steel needle fixation clamp connected to the bone external fixation support, and a steel needle clamped in the steel needle fixation clamp, wherein the bone external fixation support consists of a far side support and a near side support, the far side support comprises a far end hole C-shaped ring, a near end hole C-shaped ring arranged above the far end hole C-shaped ring, and a plurality of traction rods connected between the far end hole C-shaped ring and the near end hole C-shaped ring, and the near side support comprises one to two tubular connecting rods connected above the near end hole C-shaped ring, and an arc-shaped bow connected between the tubular connecting rods and the near end hole C-shaped ring. The hip joint correction and thighbone extender has three functions of hip joint correction, femoral fracture treatment and thighbone extension, meets the mechanics biological environment of truncation bone correction and fixation and thighbone slow extension, and is favorable for growth of new bones and function optimization and rebuilding during fracture healing and limb extension.

A ring type triangular synchronous control extender for the thighbone is composed of an extender frame body, a steel needle fixing clamp connected to the extender frame body and a steel needle clamped in the steel needle fixing clamp. The extender frame body comprises a thighbone extender frame body arranged at the thighbone position. The thighbone extender frame body comprises a thighbone low hole ring, a thighbone upper hole ring arranged above the thighbone lower hole ring and a plurality of quick traction extension rods connected between the thighbone lower hole ring and the thighbone upper hole ring. The thighbone extender frame body further comprises one tubular connection rod or two tubular connection rods connected above the thighbone upper hole ring and an arc bow connected between the tubular connection rod and the thighbone upper hole ring. The extender frame body further comprises a tibia hole ring arranged at the tibia position and an elastic traction fixing rod arranged between the thighbone lower hole ring and the tibia hole ring. The extender can dynamically compensate pressure on the knee to enable the pressure on the knee to be dynamically balanced and can enable the knee to have certain mobility in an extension process.

The invention belongs to the field of decontamination and provides a preparation method of nanometer magnesium oxide, a nanometer magnesium oxide-nanofiber composite felt and a preparation method andapplication thereof. The preparation method provided by the invention can prepare nanometer magnesium oxide with small and uniform particle sizes and improves the nanometer magnesium oxide effect of degradation of paraoxon. The nanometer magnesium oxide-nanofiber composite felt comprises nanometer magnesium oxide and a nano-fiber film. The nanometer magnesium oxide is dispersed on the surface of the nano-fiber film and inside the nano-fiber film. The nano-fiber film is used as a base so that the nanometer magnesium oxide is fully dispersed on the base and is not agglomerated, the degradation performances of the nanometer magnesium oxide are retained and the nanometer magnesium oxide is easy to use.

The invention discloses an indoor door entering shoe sole cleaning device for avoiding white pollution, and relates to the technical field of indoor cleaning. The cleaning device comprises a dust removal box, a drying box is arranged on the back of the dust removal box through a hinge joint device, rollers arranged on the fronts and the backs of two sides of the bottoms of the dust removal box andthe drying box, and containing grooves are formed in the middles of the tops of the dust removal box and the drying box. According to the indoor door entering shoe sole cleaning device for avoiding the white pollution, a spring mechanism of the dust removal box is mainly used for folding placing plates and controls the distance between the two placing plates to remove dust on shoes with differentsizes, a crushing block is mainly used for vertically moving to impact a shoe sole to remove particulate matters adhered on the shoe sole through vibration, the shoe sole is continually impacted, a certain pressure is transferred and applied to a foot sole, a foot can be massaged when the dust on the shoe sole is removed, and fatigue is relieved.

The invention discloses a telescopic far infrared footbath bucket. The footbath bucket comprises a base body, a first bucket body and a second bucket are fixed on the upper surface of the base body, the second bucket body is located in the first bucket body, a sleeve tube is connected with the upper surface of the base body, a compression spring is arranged in the sleeve tube, the bottom of the compression spring is fixedly connected with the upper surface of the base body, an extending plate is fixedly connected with the end, away from the base body, of the compression spring, a bucket coveris fixedly connected with the end, away from the compression spring, of the extending plate, two bearings are fixedly embedded in the bottom of the bucket cover, threaded rods are arranged in the twobearings, the outer surfaces of the threaded rods are fixedly connected with the inner rings of the bearings, and threaded holes fitting the two threaded rods are formed in the upper surface of the first bucket body. The telescopic far infrared footbath bucket has the advantages of being convenient to stretch, retract, adjust and perform foot massage on feet, and the telescopic far infrared footbath bucket is convenient for a user to operate.

The invention discloses a toilet cleaning brush device with a sterilization function. The device comprises a base, a toilet cleaning brush, a transmission mechanism and a sterilization assembly; an accommodation cavity is formed in the base; the toilet cleaning brush is provided with a brush head and a brush handle; the brush head is separably accommodated in the accommodating cavity; the transmission mechanism is in linkage fit with the toilet cleaning brush so as to move between a first position and a second position; the sterilization assembly is arranged in the accommodating cavity and isin linkage fit with the transmission mechanism; when the brush head of the toilet cleaning brush is placed in the accommodating cavity, the transmission mechanism moves to the first position and drives the sterilization assembly to be switched to a first sterilization direction for sterilization; and after the brush head of the toilet cleaning brush is taken out of the accommodating cavity, the transmission mechanism moves to the second position and drives the sterilization assembly to be switched to a second sterilization direction for sterilization. According to the toilet cleaning brush device, the sterilization assembly capable of switching the sterilization directions is arranged, so that a plurality of sterilization assemblies do not need to be arranged to sterilize different parts respectively, therefore, the number of the sterilization assemblies is reduced, and cost is reduced.

The invention discloses a conveying and stacking vehicle based on intelligent mobile phone platform control and a method thereof. A rotary rod is arranged on a vehicle body and provided with a potentiometer. The conveying and stacking vehicle further comprises a fixing frame, a driving motor, a steering motor, an encoder, a main steering gear, a large steering gear, an encoder gear, a proximity switch, and an intelligent mobile phone with an APP for conveying. A cabinet body of an accessory cabinet and a top covering plate are hinged through an improved hinging part. The conveying and stacking vehicle is combined with the method of the conveying and stacking vehicle, so that the problem of use inconvenience caused by failure of long-distance operation and the defect that a hinging structure of a cabinet body of an accessory cabinet and a top covering plate are quite difficult to operate in the starting period and difficult to start by an operator in the prior art are avoided.

The invention provides a health management system based on cloud computing. The health management system comprises a login control module, a display module, a data acquisition module and a cloud computing data analysis module, the login control module is used for carrying out identity verification on a user by adopting a face recognition mode; the display module is used for displaying the physical state data of the user and health suggestion information generated based on the physical health data to the user passing the identity verification; the data acquisition module is used for acquiring the physical state data of the user; and the cloud computing data analysis module is used for analyzing the physical state data and generating health suggestion information. According to the health management system based on cloud computing of the invention, the problems that account secret security is not high enough and old people are inconvenient to use a system in the prior art due to account password login in the prior art can be effectively avoided, and meanwhile, frequent local upgrading and updating of the user can be avoided.

The invention is suitable for the technical field of machinery, and provides a corrugated board drying device. The corrugated board drying device comprises a supporting table, a rotating shaft, a conveying belt, a frequency modulation motor, a drying box, an air heater, a rotating rod, turning plates, transverse plates and a humidity sensor, wherein the drying box is arranged in the middle section of the conveying belt; the rotating rod is arranged at the top of the drying box; the two ends of the rotating rod are rotationally connected with the inner wall of the drying box; a plurality of turning plates are fixedly connected to the rotating rod; the turning plates are evenly arranged around the outer surface of the rotating rod; and the transverse plates are fixedly connected to the outer sides of the turning plates. When corrugated paper is conveyed to the bottom of the rotating rod through the conveying belt, the rotating rod rotates to drive the turning plates to rotate to turn over a paper board, so that the problems that a traditional drying device needs to turn over for secondary drying after drying and use is inconvenient are solved; and the humidity sensor is located in the drying box and used for detecting the humidity in the drying box and transmitting the humidity to the frequency modulation motor, the rotating speed is changed through the frequency modulation motor to control the drying time of the corrugated paper, so that the problem that the drying degrees of the corrugated paper are different is solved.

The invention discloses a self-cleaning function assembly which includes a movement module (200), a function module (800) and a cleaning brush (300). The function module (800) is disposed on the movement module (200) ), the function module (800) can pass a first position during the process of moving with the movement module (200), and when the function module (800) is in the first position, the cleaning brush (300) is in contact with the function module (800). According to the technical scheme, the problem of poor working performance of the function module due to dust collection is solved. Theinvention further discloses electronic equipment.

The invention discloses an electric power material storage cabinet which comprises a storage cabinet body, a supporting piece is arranged on the left side face of the storage cabinet body, and a transmission piece is arranged on the top face of the storage cabinet body. The storage cabinet body is composed of a lower cabinet body and an upper cabinet body. The storage capacity of the storage cabinet main body is improved; the height of the storage cabinet body can be matched with the storey height of a warehouse; the utilization rate of warehouse space can be improved; the supporting piece, the transmission piece, the clamping device, the limiting device and the girder are matched, people can put the upper cabinet body down to the ground from a higher position for use, the problem that theupper cabinet body is inconvenient to use due to the fact that the position of the upper cabinet body is too high is avoided, the accident that workers climb high to use the upper cabinet body to cause falling danger is avoided, and the practicability of the electric power material storage cabinet is improved.

The invention relates to a portable tree barrier clearing device used for a power transmission line, which comprises a first lever, a second lever, an arc suspending plate, a supporting plate, a round saw blade and a motor. The first lever and the second lever are crossed to form an X-shaped structure; the middles of the first lever and the second lever are connected in a hinged mode; handles are mounted at the head ends of the first lever and the second lever; the tail end of the first lever is fixed on the supporting plate; the tail end of the second lever is fixed on the arc suspending plate; a rabbet is formed at the middle position on the supporting plate; an L-shaped fixed plate is arranged at one side of the rabbet; the L-shaped fixed plate is positioned at the lower side of the supporting plate, and an electric push rod is arranged at the bottom of the L-shaped fixed plate; a pallet is fixed at the top of a telescopic rod of the electric push rod; the motor is fixed at the upper end of the pallet; an output shaft of the motor is connected with the round saw blade;a motor switch and an electric push rod switch are arranged at positions close to the handles. The portable tree barrier clearing device is flexible in structure and convenient to carry, and clearing efficiency is greatly improved.

The invention is suitable for the technical field of circuit breakers, and provides a circuit breaker device and a switching-on and switching-off detection device and method. The device comprises a housing, a telescoping rod, wires, a connector, a slide rheostat, an indicating lamp, a junction box, a metal ring, and a connecting nut; one end of each of the two wires is electrically connected withthe connector while the other end is electrically connected with an indicating lamp after being connected with a slide rheostat in series; the junction box is opened, a notch is formed in the connecting wire on one side of the circuit breaker, the metal ring is connected with the connecting wire, the sliding rheostat is adjusted, the connector is connected with the connecting nut after the resistance value of the sliding rheostat is adjusted to be maximum, and whether the indicator lamp is lighted or not is observed; if not, the resistance value of the slide rheostat is adjusted, the indicatorlight is observed; if the indicator light does not react all the time, the circuit breaker is in a disconnected state; if the indicator light reacts, the circuit breaker is in a connected state, andthe junction box is fixed to the circuit breaker connecting line; so that the problems that the circuit breaker needs to be disassembled and use is inconvenient in a traditional detection mode are solved.

The invention discloses a ZigBee-based blanket kick-off alarm intelligent wearable system which comprises a multiple temperature measuring terminals, a coordinator node, a main controller and an alarmdevice. The coordinator node and the main controller are in communication connection, and the alarm device and the coordinator node or the main controller are in communication connection. The temperature measuring terminals are used for measuring temperature information and transmitting the measured temperature information to the coordinator node, the coordinator node transmits the received temperature information to the main controller, a normal temperature range is preset in the main controller, and the main controller judges whether the received temperature information is in the normal temperature range or not and emits an alarm signal to the alarm device through the coordinator node or directly emits the alarm signal to the alarm device if not. The system is mainly constructed by theInternet of things technology, and the technical problems of turnover false alarm, limited use range, no adaption to seasonal changes, complicated system structure and easy pull of an existing blanketkick-off prevention monitoring system can be overcome.

The invention discloses a portable steel wire rope specially used for hoisting slings, which comprises a steel wire rope reel outer shell, a steel wire rope reel handle, a fixed hook for a steel wire rope reel outer shell, and a winding shaft. A wire rope retractor handle is provided on the side, and a limit hole is provided at the middle position of the front surface of the wire rope retractor outer shell. The outer left end of the wire rope retractor handle is provided with a handle protection cover. The wire rope retractor handle It is installed at the upper middle position of the outer casing of the wire rope retractor. The invention is scientific and reasonable in structure, safe and convenient to use, equipped with a wire rope reel, and the wire rope can be rewound through the wire rope reel, and when the wire rope needs to be used, it is convenient to carry directly, avoiding the inconvenient carrying of the traditional wire rope. Problems, at the same time, the length of the required wire rope can be automatically adjusted through the wire rope retractor.

A regulation-control orthosis for coronal plane deformity of an ankle is formed by a bone fixing support, steel needle fixing clamps connected onto the bone fixing support and steel needles clamped in the steel needle fixing clamps; the bone fixing support comprises a far end hole ring, a near end hole full ring arranged at the middle or middle upper section of a tibia, at least two fast extending lengthening rods connected between the far end hole ring and the near end hole full ring, a hole ring connecting rod provided with threads and connected between the far end hole ring and the near end hole full ring, and an arc hole ring adjustably connected to the hole ring connecting rod by an up-and-down adjusting nut and arranged at the middle lower section of the tibia. The regulation-control orthosis coronal plane deformity of the ankle is special for treating the strephexopodia or strephenopodia deformity of the ankle caused by synostosis, can perform traction, resetting, fixing and deformity correcting on fracture or deformity of the ankle in introversion and extroversion spaces, and is suitable for the traction, fixing and correcting on the coronal place of the ankle.

The invention discloses a long bone fracture repositioning device, which comprises a proximal end support frame, a distal end support frame, quick drawing extension rods, steel needle fixing clamps and steel needles, wherein the quick drawing extension rods are connected between the proximal end support frame and the distal end support frame, the steel needle fixing clamps are connected to the proximal end support frame and the distal end support frame, the steel needles are clamped by the steel needle fixing clamps, the proximal end support frame and the distal end support frame are same in structure and respectively comprise a transverse chute type repositioning slide plate and two fixed gliding hole plates which are connected to the chute type repositioning slide plate, one surface of each chute type repositioning slide plate is provided with a transverse guide sliding chute, a transverse guide long hole is formed between the bottom of the guide sliding chute and the other surface of the chute type repositioning slide plate, the fixed gliding hole plates are provided with holes for connecting the steel needle fixing clamps, the fixed gliding hole plates are further provided with positioning bulges which are matched with the guide sliding chutes and can slide along the guide sliding chutes. The long bone fracture repositioning device disclosed by the invention is simple in structure, the minimally invasive idea is enhanced, the excellent rate of repositioning is improved, and requirements of fracture repositioning and various malformation correcting can be met to the maximum extent.

The invention discloses a talipes equines orthosis. The talipes equines orthosis consists of a bone fixation support, a steel needle fixing clamp and a steel needle clamped in the steel needle fixing clamp, wherein the bone fixation support comprises a tibial hole full ring arranged on the middle segment or upper segment of a tibia, a calcaneal C-type hole ring arranged on the middle segment of a calcaneus, a metatarsal proximal C-type hole ring arranged at the promxial position of a metatarsus, and a metatarsal distal C-type hole ring arranged at the distal position of the metatarsus. The talipes equines orthosis solves the technical problem that traditional talipes equines orthoses used for correcting talipes equines have difficulty in meeting the orthosis and treatment needs of talipes equines. The talipes equines orthosis has the advantages that the operation is convenient and safe, the structure is simple and ingenious, an operation is guaranteed to be finished under the microinvasive or noninvasive condition, the damage to the local soft tissue injury and blood supply is avoided to the greatest extent, the fracture healing and function reconstruction are facilitated, the curative effect is high, and the complication is low.

The invention discloses a data time-sharing transmission interoperability method, system, mobile terminal and storage medium. The method comprises: after the Bluetooth earphone is put into the earphone charging box and a charging connection is established with the earphone charging box, the mobile terminal and the Bluetooth The headset establishes a wireless communication connection; in the process of charging the Bluetooth headset by the headset charging box, the mobile terminal receives the monitoring data sent by the Bluetooth headset in real time, and the monitoring data is sent to the Bluetooth headset by the power supply end of the headset charging box while charging; After receiving the monitoring data, the mobile terminal displays the current charging status of the earphone charging box and the Bluetooth earphone on the display interface. The present invention transmits the charging state data to the Bluetooth headset through time-sharing transmission during the charging process of the Bluetooth headset through the headset charging box, and the Bluetooth headset then sends it to the mobile terminal connected to it, so that the user can use the mobile terminal in a timely manner. Obtain relevant information about the charging status of the earphone charging box and the Bluetooth earphone.

An ankle multidimensional regulation-control orthosis is formed by a bone fixing support, steel needle fixing clamps connected onto the bone fixing support and steel needles clamped in the steel needle fixing clamps; the bone fixing support comprises a far-end U-shaped hole ring arranged at the calcaneus, a near end hole full ring arranged at the middle section or middle upper section of a tibia, and a plurality of fast extending lengthening rods which are connected between the far end U-shaped hole ring and the near end hole full ring; each fast extending lengthening rod comprises a thread rod, an inner rod sleeve and an outer rod sleeve; a pressure controller is arranged between the upper end part of the inner rod sleeve and the thread rod; a locking joint is arranged between the upper end part of the outer rod sleeve and the inner rod sleeve. The ankle multidimensional regulation-control orthosis can perform treatment tasks such as traction, resetting, fixing and deformity correcting on the fracture or deformity of the angle in a multidimensional space, the treatment on multiple bone diseases of the angle can be realized, particularly, flexible correcting can be realized on rotary deformity, strephexopodia and strephenopodia, and the orthosis plays an important role in foot correcting aspect and has obvious advantages.

The invention discloses an indoor entrance shoe sole cleaning device and method capable of avoiding white pollution. The device comprises a dust removal box, a drying box is arranged on the back surface of the dust removal box through a hinge device; rollers are arranged on the front surfaces and the back surfaces of two sides of the bottoms of the dust removal box and the drying box; accommodating grooves are formed in the middle parts of the tops of the dust removal box and the drying box; the invention relates to the technical field of indoor cleaning, for the indoor entrance sole cleaningdevice capable of avoiding white pollution, a clockwork spring mechanism arranged in the dust removal box is mainly used for folding placement plates; meanwhile, the spring mechanism plays a role in removing dust from shoes with different sizes by controlling the distance between the two placement plates; a smashing block is mainly used for impacting the shoe sole through vertical movement, thus removing particulate matter adhered to the shoe sole through vibration and continuously impacting the shoe sole to apply certain pressure to the foot sole through force transmission, so that the foot can be massaged while dust on the shoe sole is removed, and fatigue is relieved.

The invention discloses a method for switching and controlling a video output mode, which comprises: switching commands of the video output mode are received and prompting messages are provided; if certain information which is used for conducting the mode switching is generated according to the prompting messages and received, the video output mode is switched according to the switching commands of the mode; otherwise, a primary video output mode is kept. The invention also discloses a device for switching and controlling the video output mode and a video player. By using the invention, when a user carelessly touches keystrokes of a remote control in the unknowing circumferences in advance to cause that the remote control transmits the switching commands of the video output mode, the prompting messages are transmitted to remind the user, which can cause that the user knows the keystrokes on the remote control to be carelessly touched, thus avoiding the problems existed in the prior art.

The invention discloses a conveying and stacking vehicle based on intelligent mobile phone platform control and a method thereof. A rotary rod is arranged on a vehicle body and provided with a potentiometer. The conveying and stacking vehicle further comprises a fixing frame, a driving motor, a steering motor, an encoder, a main steering gear, a large steering gear, an encoder gear, a proximity switch, and an intelligent mobile phone with an APP for conveying. A cabinet body of an accessory cabinet and a top covering plate are hinged through an improved hinging part. The conveying and stacking vehicle is combined with the method of the conveying and stacking vehicle, so that the problem of use inconvenience caused by failure of long-distance operation and the defect that a hinging structure of a cabinet body of an accessory cabinet and a top covering plate are quite difficult to operate in the starting period and difficult to start by an operator in the prior art are avoided.

The invention discloses an automatic packaging device for SIM card reader production. The automatic packaging device for SIM card reader production comprises transverse plates and platforms, the platforms are installed at the centers of the upper ends of the front transverse plate and the rear transverse plate correspondingly, a discharging assembly is arranged above the platforms, the discharging assembly comprises a first material box, a second material box, gears, a double-shaft motor, racks, a baffle and a stand column, the racks are connected to the upper side and the lower side of the outer wall of the gears in a meshed mode, and the racks are in clearance fit with the second material box and the baffle. The automatic packaging device for SIM card reader production is scientific and reasonable in structure and safe and convenient to use, through cooperation of the double-shaft motor, the gears, the racks, packaging boxes and SIM card readers, the double-shaft motor can drive the gears at the two ends to rotate synchronously, only one packaging box can fall off each time, the material blocking situation is avoided, and the packaging boxes can fall down after losing lower limitation, so that the problem that the use is inconvenient due to the fact that materials are easily blocked or a plurality of continuous discharging pipes are arranged during discharging is solved.

The invention belongs to the field of decontamination and provides a preparation method of nanometer magnesium oxide, a nanometer magnesium oxide-nanofiber composite felt and a preparation method andapplication thereof. The preparation method provided by the invention can prepare nanometer magnesium oxide with small and uniform particle sizes and improves the nanometer magnesium oxide effect of degradation of paraoxon. The nanometer magnesium oxide-nanofiber composite felt comprises nanometer magnesium oxide and a nano-fiber film. The nanometer magnesium oxide is dispersed on the surface of the nano-fiber film and inside the nano-fiber film. The nano-fiber film is used as a base so that the nanometer magnesium oxide is fully dispersed on the base and is not agglomerated, the degradation performances of the nanometer magnesium oxide are retained and the nanometer magnesium oxide is easy to use.