165results about How to "Add placement" patented technology

The invention discloses a debris flow early warning method. Aiming at the technical problem that the prior art cannot solve calculation and determination of early warning rainfall threshold value of a debris flow early warning system in a basic data information lacking region, the invention provides the debris flow early warning method applied in the basic data information lacking region. The method comprises the following steps of: arranging rainfall monitoring sites at reasonable places of a debris flow valley; taking the sum of 1hr rainfall intensity value of rainfall data of the rainfall monitoring sites and early affected rainfall value as an early warning rainfall threshold value; calculating and determining the early warning rainfall threshold value of each site based on a debris flow starting mechanism by using the data of rainfall, hydrographic characteristic, terrain in the valley, loose solid substances and the like of a debris flow early warning region, presetting each threshold value in the early warning system, and judging whether to start the early warning system for early warning through the real-time comparison result of the real-time rainfall data and the threshold values. In the method, the principle is reliable, the calculation process is scientific and simple, implementing equipment is simple and installation is convenient, and the method can be universally applied to the requirements of debris flow early warning of various debris flow regions.

Methods and systems to optimize wafer placement repeatability in semiconductor manufacturing equipment using a controlled series of wafer movements are provided. In one embodiment, a preliminary station calibration is performed to teach a robot position for each station interfaced to facets of a vacuum transfer module used in semiconductor manufacturing. The method also calibrates the system to obtain compensation parameters that take into account the station where the wafer is to be placed, position of sensors in each facet, and offsets derived from performing extend and retract operations of a robot arm. In another embodiment where the robot includes two arms, the method calibrates the system to compensate for differences derived from using one arm or the other. During manufacturing, the wafers are placed in the different stations using the compensation parameters.

An interaction advertisement system relates to the electronic advertisement technology field, which aims to solve the technical problems that the advertisement content is conveniently updated, and the remote control of the advertisement spread is realized. The advertisement system comprises an advertisement player terminal and a server background, wherein the advertisement player terminal is provided with a main controller and a main processor of a media processor which are respectively connected with the terminal internal memory, a terminal external memory, a starting ROM, a wireless network interface, a sound card chip, an LCD screen, a keyboard and a power supply of the main processor, and the server background comprises a management module for playing video files, a program playing menu management module, a program playing menu management module, a playing log view module, a working state monitoring module and an on-off control module. The invention can increase the advertisement variety and the coverage percentage of the advertisement, improves the concern extent of receivers, is convenient for the updating of the advertisement, and can realize the characteristics of remote control, remote updating, remote diagnosis and remote monitoring of the function of the advertisement spread and the like.

Embodiments of the present invention improve upon component level inspection performed by pick and place machines. Such improvements include measuring the travel of a pick and place machine placement nozzle and the motion characteristics of the workpiece through the placement process. Since the component is placed on the workpiece with some force to ensure proper adhesion to the workpiece, some deflection of the workpiece is expected during the placement cycle. The placement force is adjusted to ensure that the component is safely placed into the solder paste or adhesive. Placement force is adjusted through a number of characteristics including: choice of spring tension in the nozzle; the length of the nozzle and the amount of over-travel into the board; the rigidity of the board and design; and the placement of the board support mechanisms. With proper adjustment of these characteristics and parameters, high quality placements onto the workpiece can be ensured. To properly adjust these parameters, a method of measuring the workpiece motion and nozzle travel is provided.

The invention provides air purification equipment and an air purification method. The air purification equipment comprises a shell, a mobile unit and a gas concentration detection unit, a central control unit, a gas inlet unit and an air purification unit which are arranged in the shell; the gas concentration detection unit is used for detecting the gas integral concentration of an optical path in a monitored area; the central control unit is used for determining the varieties of air pollutants and concentration reconstruction graphs of different varieties of air pollutants and acquiring geographic position information of the area where the concentration of the air pollutants exceeds the standard most seriously in the monitored area and generating a driving signal when the concentration of the air pollutants exceeds the standard; the mobile unit is used for moving to the area where the concentration of the air pollutants exceeds the standard most seriously in the monitored area under control of the driving signal; the gas inlet unit controls the gas inlet volume under control of the driving signal; the air purification unit comprises multiple layers of filter screens used for purifying air entering the air purification equipment. Accordingly, fixed-point air purification can be achieved.

Embodiments include measuring motion characteristics of the workpiece through the placement process. Since the component is placed on the workpiece with some force to ensure proper adhesion to the workpiece, some deflection of the workpiece is expected during the placement cycle. The placement force is adjusted to ensure that the component is safely placed into the solder paste or adhesive. Placement force is adjusted through a number of characteristics including: choice of spring tension in the nozzle; the length of the nozzle and the amount of over-travel into the board; the rigidity of the board and design; and the placement of the board support mechanisms. With proper adjustment of these characteristics and parameters, high quality placements onto the workpiece can be ensured.

The invention discloses a pallet loading and unloading device, comprising a rack, wherein a lifting frame is arranged on the rack in a sliding manner, a lifting driving mechanism is further arranged on the rack, a trolley is arranged on the lifting frame in a sliding manner, and a pallet receiving and delivering device is connected onto the trolley; the lifting driving mechanism comprises a drive sprocket and a driven sprocket which are rotationally connected onto the rack, a lifting motor for driving the drive sprocket is arranged on the rack, a lifting chain is connected between the drive sprocket and the driven sprocket, two free ends of the lifting chain are respectively and fixedly arranged at an upper end and a lower end of the lifting frame, and a weight box is further arranged on the lifting chain; and the pallet receiving and delivering device comprises a drive wheel and a driven wheel which are rotationally connected onto the trolley, a delivering chain is connected between the drive wheel and the driven wheel, and a receiving and delivering motor for driving the drive wheel is arranged on the trolley. According to the invention, pallets can be automatically placed on a drying cart or unloaded from the drying cart without manual placement and unloading, so that the labor intensity of workers is greatly reduced and the work efficiency is increased.

The invention relates to a shelf commodity sales effect improving method and system. The method comprises the following steps of firstly acquiring photo data of different shelf commodities and uploading the photo data to a cloud server; using the cloud server intelligently to analyze the photo data by using an artificial intelligence image recognition engine analysis technology and extract the accurate shelf commodity display data; downloading the goods shelf display data from a cloud server through a data analysis processing unit of a central server; meanwhile, associating the data processingunit with the commodity payment checkout system to receive sales data; establishing association between the shelf commodity display data and the sales data, analyzing and processing the association,and then establishing a correlation calculation model of the shelf commodity display data and the sales data based on the principle of a statistical data model; and establishing a correlation graph according to the optimized correlation calculation model, and finally customizing an adaptive sales strategy according to the correlation graph, thereby effectively solving the problem of low sales effectiveness of the retail store.

The invention provides a biometric authentication processing system. When the reading quality during the authentication process is less than a predetermined level of quality, image processing to improve the quality of a read image that is not performed during the registration process is performed to improve the image quality, thus making the biometric authentication successful. Software to improve the image quality is added by upgrading the version of the authentication software to successively add image improvement software to the authentication software irrespective of the registration process. This version upgrading method enables changes to be made to enhance the authentication success rate regardless of the version of the registration software. Further, an area in which to read biometric information during the registration process is set larger than that in which to read biometric information during the authentication process, so that if a subject body part is placed slightly deviated from a correct position, a matching check can still be made. The biometric information reading area is not only used as an entire single image but divided into sub-areas, in each of which characteristic quantities are extracted. According to the result of a matching check in each divided sub-area, an overall authentication result is determined as either OK or NG. Since which of the divided sub-areas is NG can be known, NG causes can be analyzed precisely.

A system and method for automatically creating a surgical team schedule is herein provided. Typical surgical team participants may include nurses, vendor representatives, administrative and technical staff, doctors and other specialists such as anesthesiologists and surgeons. Optimal participation criteria may include individual staff location, workload, vacation schedules, levels of skill, cost, etc. In addition, automatically managing and optimizing the supplies and medicines utilized in surgical procedures may be achieved to insure and monitor quality and cost control. Accordingly, surgical administrators can track the precise cost and maintain absolute quality control and the safety of each aspect of a surgical procedure. This is achieved by insuring that all the correct supplies and personnel are timely and locally assembled and available at the correct precise surgical site, that the correct surgical procedure has been specified, and that the correct patient is verified as present on site prior to commencement of the procedure.

The invention discloses a metal powder tube forming die and a metal powder tube preparation method. A high-temperature resistant glass tube is used as a rigid die for pressing, the glossiness, the roundness and the linearity of product surfaces are greatly improved, pressing pressure is reduced, so that the porosity of a metal powder filter tube is greatly improved, the fluid infiltration capacity of a die tube is increased, and a filter die tube blank is filled with high-temperature resistant aluminum oxide ceramic balls serving as internal supports. Therefore, adverse consequences such as collapse and deformation of a powder tube caused by non-uniform contraction in the contraction process during sintering are greatly reduced, and the yield of products is improved. Besides, as the aluminum oxide ceramic balls are placed into the filter die tube blank to serve as the internal supports, the placement mode of the die tube blank in a furnace can be improved, the blank can be horizontally placed in the furnace and can also be vertically placed and sintered, and the requirement for furnace types is relaxed.

The invention provides a detection system for food in a refrigerator and the refrigerator. The detection system for food in the refrigerator comprises a hyperspectral imaging device, a light source device, a detection controller and a type detection device; the hyperspectral imaging device is arranged inside a refrigerator body of the refrigerator, moreover, the shooting angle faces a detection area, the detection area is formed inside the refrigerator body and is used for containing the detected food; the light source device is also arranged inside the refrigerator body of the refrigerator, comprises a halogen tungsten lamp, and is used for providing shooting light for the hyperspectral imaging device by utilizing the halogen tungsten lamp; the detection controller is configured to acquire a type detection trigger signal and start the hyperspectral imaging device and the halogen tungsten lamp according to the trigger signal; and the type detection device is configured to recognize thetype of the detected food by utilizing hyperspectral data shot by the hyperspectral imaging device. According to the scheme, image information and spectral information are comprehensively utilized for carrying out food type recognition, and the recognition accuracy is high; and meanwhile, the halogen tungsten lamp with the wide spectral range is adopted to provide the shooting light, so that theimaging requirements are met.

Methods and systems to optimize wafer placement repeatability in semiconductor manufacturing equipment using a controlled series of wafer movements are provided. In one embodiment, a preliminary station calibration is performed to teach a robot position for each station interfaced to facets of a vacuum transfer module used in semiconductor manufacturing. The method also calibrates the system to obtain compensation parameters that take into account the station where the wafer is to be placed, position of sensors in each facet, and offsets derived from performing extend and retract operations of a robot arm. In another embodiment where the robot includes two arms, the method calibrates the system to compensate for differences derived from using one arm or the other. During manufacturing, the wafers are placed in the different stations using the compensation parameters.

The invention relates to an orthopedic robot navigation device and a positioning system. The orthopedic robot navigation device comprises a machine seat and a four-freedom degree biplane positioning mechanism, wherein the four-freedom degree biplane positioning mechanism is arranged on the machine seat and connected with the machine seat. The four-freedom degree biplane positioning mechanism comprises a first series connection mechanical arm, a second series connection mechanical arm and a straight lever-shaped guide device, wherein the first series connection mechanical arm comprises a firsthorizontal motion assembly, a first vertical motion assembly and a first cardan joint which are connected in series; the second series connection mechanical arm comprises a second horizontal motion assembly, a second vertical motion assembly and a second cardan joint which are connected in series; both the first horizontal motion assembly and the second first horizontal motion assembly are connected with the machine seat; and the straight lever-shaped guide device realizes the self positioning by being clamped with the first cardan joint and the second cardan joint respectively. The device isarranged at the side surface of the wounded limb, realizes the accurate positioning by the straight lever-shaped guide device and is suitable for a bone fixing operation of any wounded limb part, thereby more favorably meeting the requirement of the operation.

The invention provides a method and a device for detecting the capacity available of a refrigerator. The method for detecting the capacity available of the refrigerator comprises the following steps of utilizing a plurality of detection assemblies arranged in a storage compartment of the refrigerator to respectively detect visible light intensity and infrared light intensity of respective positions, wherein the storage compartment is divided into a plurality of storage spaces, and each detection assembly is arranger in one storage space; confirming one detection target storage space from the plurality of storage spaces; utilizing visible light intensity detected by the detection assembly in the detection target storage space and visible light intensity and infrared light intensity detected by the detection assembly adjacent to the detection assembly in the detection target storage space in the vertical direction to calculate the used capacity of the detection target storage space. With the scheme provided by the invention, the detection of the capacity available is realized according to the difference between the projection and the reflection of the visible light and the infrared light and the influence of the size of the capacity available on the light intensity, the detection result is accurate, and the use convenience of users is improved.

The invention relates to a batch ring spinning nanofiber / short fiber covering yarn device and method. The device comprises a ring throstle, the ring throstle comprises a front rubber covered roll (1),a front roller (8), a first insulating plate (2), a directed and fixed point deposition device (3), a spun yarn winding device (4), a yarn guide hook (7) and a single needle type electrostatic spinning device (6), wherein a front roller jaw is formed by the front rubber covered roll (1) and the front roller (8), the single needle type electrostatic spinning device (6) is arranged between the front roller jaw and the yarn guide hook (7), the directed and fixed point deposition device (3) is arranged below the single needle type electrostatic spinning device (6), the first insulating plate (2)is arranged below the front rubber covered roll (1), and the yarn guide hook (7) is connected with the spun yarn winding device (4). The deposition device is optimized, a nanofiber bundle is introduced into a yarn core, and the problem that conventional nanofiber and short fiber compound resultant yarn is easy to abrade and poor in durability in the follow-up processing and usage processes is effectively solved.

The invention relates to an orthopaedic robot guide needle positioner, a navigation unit and a positioning system. The orthopaedic robot guide needle positioner comprises a curved guide positioning device. The curved guide positioning device comprises a connecting rod and a support which are mutually connected, a sliding sleeve capable of sliding along the axis of the connecting rod is arranged on the connecting rod, a sleeve fixing structure is arranged on the support, a guide sleeve used for guiding a guide needle is fixedly disposed through the sleeve fixing structure, and the axis of the guide sleeve forms an angle ranging from 15 to 75 degrees with the axis of the connecting rod after the guide sleeve is disposed. By the arrangement of the curved guide positioning device, the guide needle for cooperation can be greatly shortened and is enabled to be far away from a mechanical arm of an orthopaedic robot, interference of the C-shaped arm and the guide needle is removed, and requirements on operation can be well met.

The invention relates to an automatic grasping climbing and placing system capable of realizing steering conveyance. The automatic grasping climbing and placing system comprises a control cabinet, a conveying rail, a grasping device and a vehicle frame carrying platform, wherein the conveying rail comprises a climbing rail and a steering rail, the conveying rail comprises the climbing rail and the steering rail, the grasping device is arranged on the conveying rail in a matched way, and can move on the conveying rail, the vehicle frame carrying platform is positioned right under the steering rail, a vehicle frame is erected on the vehicle frame carrying platform, the climbing rail comprises a left rail and a right rail, an axle storage frame is arranged in front of the left rail and the right rail, the lower end of the axle storage frame is provided with a pressure sensor, and the steering rail comprises a No.1 bent rail and a No.2 bent rail. The automatic grasping climbing and placing system has the advantages that distance sensors distributed above the vehicle frame are used as data collecting devices, the placing positions are proper, and the monitoring on the positions of the vehicle frame and a suspension is very important, so that the setting number of controllers is reduced, and then, a control cabinet is used for controlling the moving of a moving support platform and a carried vehicle.

The invention discloses a waterproof and dustproof fan. The waterproof and dustproof fan comprises a seat body (1), a rotating fan blade (2), a magnetic ring (3), two bearings (41 and 42), a clamp spring (5), a stator component (6) and a plug (7), wherein the seat body (1) is provided with an internal shaft column (11) and an external shaft column (12); an annular cavity (15) is formed between the internal shaft column (11) and the external shaft column (12); the rotating fan blade (2) comprises a columnar wall (20), blades (24), and the large diameter end (22) and the small diameter end (21)of a stepped shaft which is coaxial with the columnar wall (20); an annular groove (23) is formed at the small diameter end (21); the magnetic ring (3) is fixed on the inner side of the columnar wall(20) and sleeved on the external shaft column (12); an annular convex block (18) is arranged in the internal shaft column (11); the two bearings (41 and 42) are sleeved at the small diameter end (21), embedded into the internal hole of the internal shaft column (11) and positioned on the two sides of the annular convex block (18); the clamp spring (5) is clamped and fixed on the annular groove (23); the winding of the stator component (6) is positioned in the annular cavity (15); and the opening end of the annular cavity (15) is sealed by the plug (7). The waterproof and dustproof fan can be applied to the field of fans.

The invention discloses a positioning and navigation system. The positioning and navigation system is used for leading a prosthesis to be implanted into acetabular fossa. The positioning and navigation system comprises a positioning base and a positioner, wherein the positioning base comprises a jointing base and a guide rod, the jointing base cooperates with the acetabular fossa to be jointed tothe acetabular fossa for fixation; the guide rod is fixed to the jointing base and is coaxial with the acetabular fossa; the positioner comprises a sleeve and a guide arm which is formed in a manner that the sleeve extends, the sleeve is suitable for sleeving of the guide rod, and a plurality of guide holes being parallel to the axis of the sleeve are formed in the guide arm; and the guide holes are suitable for positioning needles in a manner of beating in, so that the positioning needles can be beaten into the outer region of the acetabular fossa and are parallel with the axis of the acetabular fossa. The invention further discloses a prosthesis implantation method. The positioning and navigation system can accurately position the milling and softening direction of the acetabular fossa and the implantation position of an acetabular cup, so that during operation, the acetabular cup can be accurately implanted, the acetabular cup can be guaranteed to be implanted to the best position,and the incidence rate of complications of prosthesis dislocation, prosthesis loosening, pain and the like can be reduced.

A graph processing optimization method that addresses the problems such as the low computation-to-communication ratio in graph environments, and high communication overhead as well as load imbalance in heterogeneous environments for graph processing. The method reduces communication overhead between accelerators by optimizing graph partitioning so as to improve system scalability.

The invention relates to a carbonization treatment device for oily sludge. The carbonization treatment device comprises a screw conveying pump, a back mixing machine, a drying machine, a dry material conveyor, a carbonizing machine and a carbon discharging machine which are sequentially connected and communicated, wherein the carbon discharging machine is used for transporting materials; the back mixing machine is connected and communicated with the dry material conveyor; part of dry materials formed by drying in the drying machine and the oily sludge are mixed in the back mixing machine; a material cavity and a combustion chamber of the carbonizing machine, which are connected by a pipeline, are arranged on the carbonizing machine; the combustion chamber is positioned below the material cavity of the carbonizing machine and is used for recovering pyrolysis gas generated by the material cavity of the carbonizing machine; a heating cavity of the drying machine is arranged on the drying machine and is connected and communicated with the combustion chamber through a pipeline; heat-containing flue gas exhausted by the carbonizing machine is conveyed in the drying machine. The invention aims at achieving the purpose that the oily sludge is sufficiently dried and pyrolyzed by adopting a dry-wet mixing mode and a mode of recovering the heat-containing flue gas and the pyrolysis gas generated by the carbonizing machine.

The invention provides a detection system for food in a refrigerator and the refrigerator. The detection system for food in the refrigerator comprises a hyperspectral imaging device, a light source device, a detection controller and a type detection device; the hyperspectral imaging device is arranged inside a refrigerator body of the refrigerator, moreover, the shooting angle faces a detection area, the detection area is formed inside the refrigerator body and is used for containing the detected food; the light source device is also arranged inside the refrigerator body of the refrigerator, comprises an LED array assembly, and is used for providing shooting light for the hyperspectral imaging device by utilizing the LED array assembly; the detection controller is configured to acquire a type detection trigger signal and start the hyperspectral imaging device and the LED array assembly according to the trigger signal; and the type detection device is configured to recognize the type ofthe detected food by utilizing hyperspectral data shot by the hyperspectral imaging device. According to the scheme, image information and spectral information are comprehensively utilized for carrying out food type recognition, and the recognition accuracy is high; and meanwhile, the light source device comprising the LED array assembly is adopted to provide the shooting light in a wide spectralrange.

A water purifier is disclosed. The water purifier comprises a case, a raw water tank, filter elements mounted in the case and a thick water tank mounted in the case. The filter elements comprise RO (reverse osmosis) filter membranes. The thick water tank is used for containing thick water obtained by washing the RO filter membranes. The raw water tank and the thick water tank are communicated. The thick water in the thick water tank can overflow to the raw water tank. The raw water tank and the thick water tank are communicated so that the thick water obtained by washing the RO filter membranes can be cycled and reused, the concentration of the thick water reaches the maximum, waste of the water resource is effectively avoided, additional pipe connection for discharging the thick water is not needed, and the water purifier is flexible and convenient in arrangement positions.

The invention relates to a new energy vehicle with pit-trap prevention and carriage space adjustment functions. The new energy vehicle comprises a vehicle body, a seat, a center console, a pit climbing mechanism and an adjusting mechanism. The pit climbing mechanism comprises a reciprocating assembly and a supporting assembly; the supporting assembly comprises a moving block, a moving unit and twosupporting units; the adjusting mechanism comprises an extending-retracting assembly and a lifting assembly; and the extending-retracting assembly comprises an electromagnet, a permanent magnet, an extending-retracting frame and a displacement plate. In the new energy vehicle with the pit-trap prevention and carriage space adjustment functions, automatic pit-separating resetting of the transportvehicle is achieved through the pit climbing mechanism, manpower carrying is avoided, convenience and rapidness are achieved, the time is saved, and accordingly the working efficiency of the transportvehicle is improved; through the adjusting mechanism, the fastening and limiting effects on irregular goods can be achieved, and the volume of a carriage is further increased so that the placing positions of the goods can be better optimized under the non-overloading situation, and loading and unloading are facilitated; and in this way, the practicability and the reliability of the new energy transport vehicle are improved greatly.

The invention discloses a comprehensive testing device for coal bed strain, seepage, displacement and flow jetting. The comprehensive testing device comprises a coal core chamber, a vibrator, an ultrasonic wave generator, a methane gas source, a seepage and displacement gas source, a hand rocking pump, a specific resistance determinator, a gas storing tank, a gas control valve, a bursting disc assembly, a releasing cylinder, a pressure sensor, a high-pressure valve, a drying agent, a gas flowmeter, a strain measurement sealing container and a strain gauge. Meanwhile, the invention further provides a comprehensive testing method for coal bed strain, seepage, displacement and flow jetting. The method comprises the steps of equipment leakage testing, high-pressure gas seepage testing, high-pressure gas displacement testing, high-pressure gas flow jetting testing, specific resistance determining testing and high-pressure strain measuring. The comprehensive testing device is used for carrying out testing of successfully cracking a coal sample after gas seeps a coal core, meanwhile, coal sample gas displacement testing, specific resistance determining of the coal core under high pressureand gas seeping, and coal bed high-pressure strain measuring can be carried out, and therefore the test result is closer to the true situation.

Tapered pacing lead tip shapes and fixation devices, as well as methods for making and using the same, are provided. The inventive leads include features which optimize placement and retention of the leads, as well as features which improve function of the lead. Also provided are implantable devices and systems, as well as kits containing such devices and systems or components thereof, which include the inventive dilating lead tip designs and segmented electrode structures.

The invention provides a refrigerator. The refrigerator comprises a refrigerator body, a plurality of detection assemblies and a volume calculation device. A storage compartment is defined in the refrigerator body, the refrigerator body comprises a top wall, a bottom wall and vertically-arranged side walls, and the top wall and the bottom wall are arranged horizontally. The detection assemblies are selectively arranged on one or more of the top wall, the bottom wall and the side walls, and each detection assembly at least comprises a light-sensitive apparatus; the light-sensitive apparatuses are configured to detect the visible light intensity and the infrared intensity of the positions where the detection assemblies are located; and the volume calculation device is connected with the multiple detection assemblies, is configured to obtain the visible light intensity and the infrared intensity and calculates the using volume of the refrigerator compartment according to the visible light intensity and the infrared intensity. According to the refrigerator, the optical principle can be utilized for detecting the utilized volume of the storage compartment of the refrigerator; and the detection result is precise, and the use experience of a user is improved.

The invention relates to a cooling method for an isoprene rubber polymerization reaction. In a polymerization reaction kettle with a double helical ribbon agitator, a plurality of radial push type scrapers closely matched with a kettle wall are added between ribbons on external sides of double helical ribbon agitator blades; a frictioning direction of the radial push type scrapers and a stirring tangent direction form an angle of 30-60 DEG; adjacent radial pushing type scrapers are uniformly distributed in 30-180 DEG; the radial pushing type scrapers are fixed on a fixed bracket; and the fixed bracket is fixed on an agitating shaft between the ribbons of the double helical ribbon agitator blades, and can rotate coaxially with the double helical ribbon agitator blades. When isoprene is subjected to a continuous polymerization reaction under effect of rare earth catalyst, and a conversion rate reaches 50%, the push type scrapers are used to clean high-viscosity glue attached to the polymerization reaction kettle wall in the polymerization process, so as to control a polymerization reaction temperature at 44-46 DEG C. The method reduces thermal resistance at the kettle wall, improves mass transfer and heat transfer of a high viscosity system in later stage of the polymerization reaction and realizes a smooth and controllable temperature.

The invention discloses a single-magnet arc-extinguishing relay, and belongs to the technical field of relays. The single-magnet arc-extinguishing relay comprises an arc-extinguishing chamber shell, astatic contact, a movable contact, and a lifting device for driving the movable contact to move up and down, wherein a containing groove is formed in the arc-extinguishing chamber shell; an arc-extinguishing magnet is arranged in the containing groove and is located between the static contact and the movable contact; the magnetic field direction in the arc-extinguishing magnet is perpendicular toor approximately perpendicular to the direction of the electric current; and at least one magnet is also arranged in the containing groove and is at least distributed at one side of the arc-extinguishing magnet. The single-magnet arc-extinguishing relay can solve the arc phenomenon often occurring in relay products by requiring only one of the most common magnets. Regardless of the polarity direction of the magnet installation, the production efficiency can be greatly improved. As only one magnet is needed to achieve the arc extinguishing effect, the production cost is greatly reduced.