190results about How to "Ensure physical safety" patented technology

The invention discloses an unmanned vehicle steering system and a control method thereof. The system comprises an execution motor, a steering machine, a motor coder, a non-contact type zero position detection mechanism, a non-contact type left limiting detection mechanism, a non-contact type right limiting detection mechanism, a front wheel absolute corner mechanism and a front wheel corner double closed loop control system. The execution motor is a steering driving mechanism, and the input end of the execution motor is connected with the output end of the steering machine. The motor coder is connected with an output shaft at the back end of the execution motor. The unmanned vehicle steering system is favorable for improving steering control accuracy of unmanned vehicles, adopts a selector switch to switch the control process of manual driving / automatic driving, facilitates program debugging and ensures vehicle and personnel body safety under the emergency condition.

The invention discloses a system and a method for on-line separation and recovery of electronic documents, and aims to realize automatic separation storage and recovery of electronic documents during the editing and using processes without any influence on thespecific document editing system. The method comprises the steps of binding a part storage area of a management terminal and a part storage area of a special key board (customized by the system) to form a logic storage space, namely, ''separation storage area''; when preserving the file in the separation storage area, effectively separating and storing information to two different mediums, namely, the management terminal and the special key board; when reading the file in the separation storage area, acquiring recovered original document by document fragment information on two mediums. Compared with the traditional encryption management, the method is more safe, convenient and reliable, so that the method can provide a safety management tool with super strength for terminal-level electronic documents.

The invention relates to a continuous pyrolysis incineration device for full-scale electronic and electrical product waste. The continuous pyrolysis incineration device structurally comprises a feeder, a pulley feed hopper, a pyrolysis gasifier, a pyrolysis gas flue, a combustion furnace, a G-L air heat exchanger, a quenching absorption tower, a bypass flue, a chimney exhaust port, a cat ladder, an activated carbon storage tank and a chimney. The continuous pyrolysis incineration device has the advantages that dangerous electronic and electrical product waste, medical waste, organic waste and other kinds of dangerous combustible solid waste with a certain heat value are treated through a pyrolysis incineration technology, pyrolysis and high-temperature incineration technologies are combined in an optimized mode, low-temperature gas and high-temperature melt are combined together, waste incineration is conducted in the steps of pyrolysis, premixing and incineration, the synthetic technological process and technological conditions of pyrolysis incineration, energy recovery and flue gas cleaning are achieved and have perspectiveness, the overall technology has the outstanding harmless characteristic, compatibility and resourcezation are remarkable, material applicability is high, no hazardous reaction medium or poisonous and harmful solvent is involved in the process, and nature greenization can be achieved.

The invention relates to a non-cadmium silver base solder with gallium, indium and cerium, wherein it comprises that 26.0%-35.0% copper, 20.0%-33.0% zinc, 0.001%-0.5% gallium, 0.001%-0.3% indium, 0.002%-0.10% cerium, and the left is silver. The invention has the advantages that: it can replace the solders as BAg45CuZnCd and BAg45CuZn. And it can reduce the fusion point by added gallium and indium, and it has cerium to refine the crystal of solder, to improve its property.

Vertical height-adjustable drilling equipment comprises a base plate, a transverse plate, a motor device, air cylinder devices, a supporting device and a drilling structure; first supporting blocks, first idler wheels, a first supporting rod, a first supporting frame and a second supporting rod are disposed on the base plate; second supporting frames, a first transverse rod, first springs, a supporting block, second springs and fixing rings are disposed on the transverse plate; the motor device comprises a motor, a third supporting rod, a third supporting frame, a second transverse rod, a first spindle and a gear; each air cylinder device comprises an air cylinder, a fourth supporting frame, a pushing rod, a second idler wheel and a fifth supporting frame; the drilling structure comprises a drilling rod, a drilling head, a ring gear, a first vertical rod, a bulb and a fixing ring; the supporting device comprises a fixed block, third springs positioned upon the fixed block, supporting rings positioned on both sides of the fixed block, bracing wires and fourth springs positioned under the fixed block. The drilling equipment disclosed by the invention can drill bores on demanded positions automatically, and reduces the labor intensity of manual work greatly.

The present invention is applicable to the technical field of information security, and provides a security encryption method, an encryption machine, and a terminal device. The security encryption method is applied to the encryption machine, and the encryption machine comprises a security processor CPU, a sensor, a battery backup area BBL Area, and a rigger circuit. The security encryption methodcomprises an encryption machine firmware security detection method. The encryption machine firmware security detection method comprises: detecting the internal and external condition of the security processor CPU by using the sensor; if the abnormality is detected, issuing an early warning signal; and directly notifying or through the trigger circuit, notifying the BBL Area of the early warning signal so as to destroy the content of the backup area. The security encryption method further comprises: a software secure startup method and a key secure storage method. According to the technical scheme of the present invention, low-cost hardware and structure design is realized, and the machine purchase cost is saved; and a hierarchical software model is provided, a secure startup control mode is provided, and full-cycle key security management is realized.

The invention discloses a cross-device high-security non-password login method. According to the method, a mobile phone number is adopted as the identity identifier of a user; initial confirmation of the identity of the user is carried out through short message verification codes; and repeat login of the user is realized through adopting random passwords generated by a server end. The method is applicable to many application scenes. As long as users are users in the mainland of China and the physical safety performance of user equipment such as desktop computers and mobile devices are fully guaranteed, namely, only the users can use the equipment, the login function of the users can be realized by the method of the invention. Compared with an existing login mode, the cross-device high-security non-password login method of the invention has the advantages of simplicity, safety, no need for password entry of the users, no password memory burden, high practical value and great practical significance. With the method of the invention adopted, when one enterprise application system is attacked, other enterprise application systems will not be affected at all.

The invention discloses a cutting process for a reinforcing steel bar. The cutting process comprises a worktable, wherein a clamping mechanism is arranged on the upper surface of the worktable; the telescopic end of each electric push rod is fixedly connected with a corresponding L-shaped top plate; sliding rails are arranged on the upper surface of the worktable and are located on two sides of two groups of mounting plates; a first electric trolley is arranged on each sliding rail; a portal frame is jointly connected onto the upper surfaces of all the first electric trolleys; a controller is arranged on the surface of one side of the worktable; a commercial power interface is formed in the lower part of the controller; a power supply wiring end of the controller is connected with the commercial power interface through a wire; and the input end of the controller is separately connected with first linear motors, the electric push rods, second linear motors, the first electric trolleys, a second electric trolley, a third linear motor and a rotating motor through wires. The cutting process disclosed by the invention has the beneficial effects that infrared positioning is adopted, and the equidistant switching speed is high, so that the working efficiency is improved; and spark sputtering does not need to be worried, so that the body safety of a worker is guaranteed.

The invention discloses healthy bedding based on Internet of Things monitoring. The bedding comprises a bedstead, a bed mat arranged on the bedstead, and human body monitoring equipment for connecting the bed mat and the bedstead, wherein the bedstead comprises a bed backrest and a bed body connected with the bed backrest, and a supporting column connected with the bed mat is arranged at one end, close to the bed backrest, of the bed body; the bed mat comprises a mat layer, a covering layer arranged on the cushion layer, and a wrapping layer wrapping the mat layer and the covering layer; the bed mat is concave; the human body monitoring equipment comprises a gravity sensor and a human body physiological index extractor which are arranged in the bed mat, as well as an audio monitor arranged on the bed backrest, a controller connected with the gravity sensor, the human body physiological index extractor and the audio monitor, a driver connected with the controller and used for driving the supporting column to execute a command, and alarming equipment connected with the controller. The healthy bedding is simple in structure, safe and comfortable to use, suitable for the majority of healthy and unhealthy people, and capable of ensuring sleep quality and sleep safety.

An angiocardiography pressing device comprises a base plate device, a supporting plate, an adjusting device, a support device, a positioning device, a pressing device, a driving device, a holding device and a friction device, wherein the base plate device comprises a base plate, a first supporting block, a first roller, a first bent rod, a first supporting rod, a first positioning rod, a first cross plate and a first positioning block, a second bent rod, a first spring, a first elastic rod, a second positioning block and a first support are arranged on the supporting plate, the adjusting device comprises a first rotary rod, a third positioning block, a first positioning frame, a first gear, a first rotary shaft, a second support, a second gear, a second rotary shaft, a first rotary part and a second positioning rod, the support device comprises a second supporting rod, a second cross plate, a first holding ring, a third support, a first holding rod, a first cross rod and a second holding ring, and the positioning device comprises a first cushion block, a third positioning rod, a second cross rod, a second supporting block and a fourth support.The device has a remarkable hemostatic effect and can improve hemostasis efficiency.

The invention relates to the field of polymers, and in particular relates to a production method of vegetable carbon plastics. The method comprises the following steps in sequence: feeding the raw vegetables into a microwave vacuum tank to undergo microwave treatment; drying, pre-carbonizing, carbonizing, calcining and cooling the pretreated raw vegetables in sequence; controlling combustion to raise the temperature to 700-750 DEG C or 900-1000 DEG C at a rate of 5-15 DEG C / min and maintaining the temperature for 40-80 minutes; then raising the temperature to 1000-1500 DEG C or 1600-1800 DEG C at a rate of 5-15 DEG C / min and maintaining the temperature for 2-8 hours to obtain vegetable carbon; and blending and modifying the base materials such as ultra-high molecular weight polyethylene with molecular weight of 4-7 million and high-density polypropylene with molecular weight of 1-1.4 million and adding a flame retardant, a toughening agent, a coupling agent, an antioxidant and the obtained vegetable carbon in the processing course. The prepared vegetable carbon plastics have the advantages of excellent toughness, higher rigidity and hardness and good antistatic property and flame retardance.

The invention discloses an intelligent welding industrial robot comprising a base. A rotating seat is vertically installed on the base; a first telescopic rod is arranged at the upper end of the rotating seat and parallel to the base; a connecting shaft is installed on the first telescopic rod; a dust removing device is fixedly installed on the side face of the connecting shaft; a welding gun is installed at the lower end of the connecting shaft and connected with a welding machine arranged on the base; a main disc decelerating motor is further arranged on the base and located below the welding gun, and a main disc is connected to the upper portion of the main disc decelerating motor through an output shaft; and a manipulator assembly is further arranged on the base. The robot is safe, reliable and convenient to use, emission of poisonous gas is reduced, the welding angle can be adjusted, the labor intensity is reduced, the working efficiency is improved, and the ambient environment isprotected.

The invention discloses an obstetrical suction cup obstetrical device. The device structurally comprises a suction cup obstetrical mechanism, supporting foot cushions, a base, a dust cover and a controller. Four corners of the bottom surface of the base are fixedly connected with the top surfaces of the supporting foot cushions, the number of the supporting foot cushions is four and the supportingfoot cushions are of the same shape and size, the four corners of the base are chamfered, the top surface of one side of the base is mechanically connected with the dust cover, the dust cover is perpendicular to the base, and the controller electrically connected with the suction cup obstetrical mechanism is embedded in the center position of one end surface of the dust cover. The obstetrical suction cup obstetrical device does not need manual labor to hold a delivery suction cup to aid delivery, can avoid the situation of injury of a baby's limbs caused by inappropriate strength and unstablestrength of holding the suction cup by hand, stable rotation speed of a mute motor makes the stress on a piston rod stable, and therefore safety of the baby's limbs can be guaranteed during aiding delivery.

The invention discloses a rotary polishing device for a sheet material. The rotary polishing device comprises a worktable, wherein a portal frame is arranged at the center of the upper surface of the worktable; one group of No.1 slide rail is arranged on the upper surface of the worktable and is located at each of two sides of the portal frame; a No.1 electric trolley is arranged on each group of No.1 slide rail; a supporting rod is arranged on the upper surface of each No.1 electric trolley; a No.1 slide way is machined on the surface at one side of each supporting rod; a No.2 slide rail is arranged in each No.1 slide way; a No.2 electric trolley is arranged on each No.2 slide rail; a controller is arranged on the surface at one side of the worktable; an electric supply interface is arranged below the controller; and an input end of the controller is electrically connected with the No.1 electric trolleys, the No.2 electric trolleys, No.3 electric trolleys and No.1 rotary motors respectively. The rotary polishing device for the sheet material has the beneficial effects of simplicity in operation, automation in polishing, convenience for overturning and manpower unleashing; and the physical safety of workers is guaranteed and the working efficiency is improved.

The invention discloses a clamping cutting device comprising a working table. The interior of the working table is of a cavity structure. A first rectangular through opening is machined in the center of the upper surface of the working table. A set of first sliding rails are arranged in the position, located on the two sides of the first rectangular through opening, on the upper surface of the working table. A pushing plate matched with a first round groove is arranged at the telescopic end of a first linear motor. A controller is arranged on the surface of one side of the working table. A PLC programming system is arranged in the controller. An electronic display screen is arranged on the front surface of the controller. The output end of the PLC programming system is electrically connected with the electronic display screen. A city power connector is arranged on the lower portion of the controller. The city power connector is electrically connected with the controller. The input end of the controller is electrically connected with first electric trolleys, the PLC programming system, a second electric trolley, the first linear motor and a first rotating motor. The clamping cutting device has the beneficial effects of being simple in structure and high in practicability.

The invention relates to automatic assembling detection equipment for pipe connector sealing rings and an assembling detection method. The automatic assembling detection equipment comprises a workbench and a control device for controlling the automatic assembling detection equipment for the pipe connector sealing rings, and the workbench is provided with a circular station rotary disc driven by a rotary disc motor; and a manual safety feeding mechanism, an infrared detection mechanism, a first sealing ring assembling mechanism, a second sealing ring assembling mechanism, a third sealing ring assembling mechanism, a visual detection mechanism, a steel sleeve assembling mechanism, a sonar detection mechanism and a discharging mechanism are sequentially and annularly arranged around the circular station rotary disc. According to the automatic assembling detection equipment for the pipe connector sealing rings and the assembling detection method, the functions of assembling and detecting a pipe connecting part, the multiple sealing rings and a steel sleeve and the like are achieved through an automatic machine, the operation field is reduced, a large amount of labor and production cost is saved, the productivity is greatly improved, and the consistency and the percent of pass of products are effectively improved; and the detection mode is diversified, detection is more in place, unqualified products can be effectively removed, and meanwhile the body safety of staff can be guaranteed.

The invention discloses an automatic replacing device for a hobbing cutter of a shield tunneling machine. The automatic replacing device comprises a main board, wherein a slide slot is formed in the main board; a fixed plate capable of sliding is arranged in the slide slot; a fixing device for fixing equipment is arranged in the fixed plate; a folding slot is formed in the bottom wall of the slideslot; and a slide block capable of sliding is arranged in the folding slot. The automatic replacing device is simple in structure, is convenient in operation, is convenient in maintenance, can automatically replace the hobbing cutter, prevents staff from operating under an environment higher than barometric pressure, guarantees body safety of staff, reduces labor intensity of a worker, improves cutter replacing efficiency of the shield tunneling machine, and has a relatively high use and popularization value.

The invention relates to multiple frequency mixing signal distribution system in WLAN, which comprises: sends one or more AP signal to MF mixer by feed line; connecting the MF mixer into cavity coupler that links one or more antenna and / or cavity coupler. Wherein, replacing multiple AP covered traditional scheme by MF mixing signal distribution system with one set system mixing multiple AP to enhance effective bandwidth or as backup. This invention enlarges single AP signal cover range, solves same frequency interference, reduces system fault rate, realizes unified management to ensure security, and provides proper redundant backup scheme for WLAN.

The invention discloses a punching machine with an infrared alarming function. The punching machine comprises a base and a machine body, a pedal is arranged beside of the base, an alarming lamp is arranged on the side face of the base, the machine body is arranged on the base, a workbench is arranged in front of the machine body, a control box is arranged beside the workbench, a handle is arranged beside the control box, a lighting lamp is arranged beside the workbench, a motor is arranged behind the machine body, a belt wheel is arranged beside the motor, an eccentric wheel is arranged beside the belt wheel, a transmission rod is arranged beside the eccentric wheel, a damper is arranged beside the transmission rod, a punch is arranged below the eccentric wheel, and an infrared sensor is arranged on the punch. The punching machine has the advantages that human body signals can be sensed intelligently, emergent halting can be realized to guarantee body safety of operating personnel, and danger can be prevented.

The invention discloses a modular-embedded lithium-battery-pole-piece rolling mill controller based on the electrical isolation idea. The controller comprises a control main board, and the control main board is connected with information interaction equipment through a wiring terminal; the control main board is in bidirectional communication with monitoring equipment; the control main board comprises a main control chip, a power-interface protection circuit, a main power source, an isolation power source, a communication module, a TVS self-recovery overload protection circuit, a CAN bus module, an off-chip power-down-data protection module and a measurement-and-control-signal isolation module; the main control chip is in bidirectional communication with the communication module, the off-chip power-down-data protection module, the CAN bus module and the measurement-and-control-signal isolation module through I / O pins; the main power source is in unilateral connection with the main control chip, the isolation power source and the measurement-and-control-signal isolation module. By means of the modular-embedded lithium-battery-pole-piece rolling mill controller, impacts of lightning strokes and surges to the controller can be resisted, electric equipment can be prevented from being burned out during overloading, data loss caused by sudden power losing can be prevented, and the controller can be matched with a hydraulic servo system.

The invention discloses a lifting device for drums. The lifting device comprises a bearing plate, wherein a group of round grooves are formed in one side of the upper surface of the bearing plate; a rotary motor I of which the rotary end is upward is arranged in each round groove; the rotary end of each rotary motor I is provided with a supporting plate which is matched with the corresponding round groove; the upper surface of each supporting plate is provided with a vertical plate; the side surface of each vertical plate is provided with a slideway; a sliding block is arranged in each slideway; an assembly plate II is provided with a controller; a storage battery is arranged in the controller; the power connector end of the controller is connected with the storage battery through a conductor; and the input end of the controller is separately connected with the rotary motors I, linear motors I and linear motors II through conductors. The lifting device has the beneficial effects that maintenance cost is low; automatic lifting and transporting are realized; the conveying speed is high; physical safety of working personnel is ensured; and working efficiency is improved.

The invention discloses a device for detecting human sweat, which comprises an acquisition unit, a detecting unit, a judging unit and a prompt unit. The acquisition unit is composed of an amphiphilichollow fiber fabric and a collector, and is used for the transmission and collection of sweat. The detecting unit is used for detecting the concentration of sweat components of the collected sweat soas to obtain the concentration value of sweat components. The judging unit is used for judging whether the concentration value of the sweat component is within a preset concentration range value of the sweat component. The prompt unit is used for generating and playing the abnormal prompting information of the concentration of sweat components when the concentration of the sweat components is notwithin the standard concentration range of the sweat components. The utility model also discloses an intelligent jacket, wherein the inner lining of the jacket body is provided with the device for detecting sweat of human body. Compared with the prior art, the device for detecting human sweat and the intelligent jacket provided by the invention can be used for monitoring the physical condition ofthe user under the condition of sweating so that the body safety of the user is guaranteed.

The invention relates to a wood fiber and in particular relates to a wood fiber used for towels. The wood fiber is prepared by the following steps in sequence: material selecting, grinding, wood pulp cooking, fiber extracting, bleaching, dipping fire-retardant treatment, bio-enzyme treatment and curing, wherein in the step of wood pulp cooking, microwaves are adopted to cook wood pulp; in the step of dipping fire-retardant treatment, vacuum-pressure is adopted for fire-retardant treatment; and in the step of bio-enzyme treatment, water is added after the wood-wool-shaped fiber subjected to dipping fire-retardant treatment is wet by adopting a nonionic wetting agent and the wood-wool shaped fiber is subjected to repeated pressure addition and reduction operations in a pressure tank and then cellulose and lipase are added to carry out degradation treatment for 5-8 minutes under the conditions that the pH value is 3-4 and the temperature is 60-70 DEG C, wherein the bath ratio of water solution to the wood fiber is (3-5):1; the dosage of cellulose is 3-5g / L; and the dosage of lipase is 0.5-1.2g / L. A method is short in treatment time and the prepared wood fiber has a fire retardant effect and fluffy and soft handfeel and is especially suitable for preparing towels.

The invention discloses a hurdle for physical training. The hurdle comprises a lever, wherein supporting rods are fixedly connected to the left side and the right side of the lower surface of the lever, dividing rulers are clamp-connected to the opposite faces of the two supporting rods, the bottom ends of the supporting rods penetrate into grooves formed in the top ends of fixing rods, sliding grooves are formed in the left and right side faces of the inner walls of the grooves, slide blocks are in sliding connection with the inner walls of the sliding grooves, the opposite faces of the two slide blocks are fixedly connected with the left side faces and the right side faces of the supporting rods, adjusting devices are clamp-connected to the bottom ends of the supporting rods, and the bottom ends of the adjusting devices are fixedly connected with the upper surfaces of first bevel gears. The hurdle for physical training makes a user adjust the height of the lever according to his / hersituation and demand under the joint effect of a handle, a second rotary shaft, second bevel gears, the first bevel gears, threaded columns, threaded cylinders, the supporting rods and the lever and accordingly can adapt to the demands of different populations, adjustment is finer, and the practicability of the hurdle is improved.

The invention discloses a low-entropy mask disclosure protection method for protecting an SM4 cipher chip, and a system implementing the method. The method comprises the following step: 1) a mask with a length of 16 bytes is selected and divided into four groups, each of which comprises four bytes, and each group of the mask Mi is divided into a quaternion (Mi0, Mi1, Mi2, and Mi3); 2) pre-calculation is carried out on an S box to obtain 16 novel S boxes, the 16 novel S boxes are recorded as Snews, and the 16 Snews are stored; 3) a round function carries out mask updating on data to be protected through the four groups of the masks obtained in Step 1), the masks are selected according to a determined order, and the mask updating is carried out on the data to be protected according to the Snew corresponding to the currently used mask; and 4) after the last round of the mask updating is completed, the mask used for the last round of the mask updating is removed from data obtained through the last round of the mask updating, so that an encrypted ciphertext value is obtained. The method and the system provided by the invention have the advantage that the physical safety of the SM4 cipher chip in an actual application scenario is ensured.

The invention discloses an automatic fire alarm device. The automatic fire alarm device comprises a room body; a water pipe fixedly penetrates through the room body; a ball valve is mounted in the water pipe; a rotating rod is fixedly connected to the lower ends of the ball valve; the rotating rod rotationally penetrates through the room body and the water pipe; the lower end of the rotating rod is rotationally clamped in a manual device; a rotating device is in gear connection with a driving gear; the driving gear is driven by a motor; the motor is fixedly mounted in the room body; the motoris electrically connected with the rotating device; the rotating device is connected with a smoke exhaust device; the smoke exhaust device is mounted in the room body; a smoke outlet is formed in oneside of the lower end of the smoke exhaust device; according to the invention, fire extinguishing treatment can be rapidly carried out after alarming; the working efficiency is improved, meanwhile, losses caused by fire disasters are reduced, two operation modes can be selected for use, the equipment starting flexibility is improved, injuries to personnel in the smoke room body are reduced, the personnel can be safer, the personnel escape efficiency is improved, and then the personnel body safety is guaranteed.

The invention discloses a desk and chair suitable for a student to take a nap after lunch and relates to the technical field of student supplies. The desk and chair comprises a desk body and a chair body, the desk body comprises a desktop and a drawer cavity, and the bottom of the desktop is fixedly connected to the top of the drawer cavity; grooves are formed in the top of the desktop, one sidesof the inner surfaces of the grooves are rotatably connected to two rotating frames through rotating blocks, and the ends, away from the rotating blocks, of the rotating frames are rotatably connectedwith two fixed frames respectively. According to the desk and chair applicable to the student to take a nap after lunch, through arrangement of the rotating frames and the fixed frames on the desktop, a fixed rubber sleeve is connected with a sliding rubber sleeve by means of a fixed plate and a sliding plate so that the student can have a nap after lunch more comfortably; meanwhile, through thecooperation between pin holes and magnetic insertion pins, the distance between the fixed rubber sleeve and the sliding rubber sleeve can be adjusted, and correspondingly the desk and chair is still applicable when the students lie one side of the face on the desk to take a nap or lies the whole face on the desk downward to take a nap; moreover, the angle of the rotating frames can be adjusted tomake the student sleep more comfortably.

The invention discloses a bottle opener, comprising a main body (1), wherein a through hole (2) where the bottleneck is embedded is arranged at the front part of the main body (1). A lever-type operating handle (3) is hinged on the main body (1) at the rear part of the through hole (2). The operating handle (3) is vertical to the axis of a first hinge shaft (18) and that of the through hole (2). An arc-shaped opening (4) is arranged at the end of the operating handle (3) close to the through hole (2). A plurality of radial bumps (5) leaning against the bottle cap is arranged on the inner wallof the arc-shaped opening (4). The bottle opener uses a plurality of radial bumps to share stress in multiple points so that the possibility of damaging the bottleneck is reduced, thereby not only ensuring the body safety of the user and causing no personal injury of people around, but also guaranteeing the repeated use of the bottle so as to avoid environmental pollution.