31results about How to "Increase the exposed area" patented technology

The utility model discloses an anorectal department hand-held dosing device relates to hand-held dosing ware technical field, including applying tube and dosing tube, applying tube is located in the dosing tube, the arc surface of dosing tube is fixedly connected with support plate, the upper surface of support plate is threadedly penetrated with screw, the lower end of screw is rotatingly connected with connecting plate, and the connecting plate is connected with the connecting plate. The lower surface of the connecting plate is uniformly and fixedly connected with two pressing rods, the arc surface of the dosing tube is fixedly connected with two T-shaped rods, the arc surfaces of the T-shaped rods are rotatably connected with two circular tubes, the arc surfaces of the two circular tubes are fixedly connected with an L-shaped plate, and the pressing rods are located on one side of the L-shaped plate. The effect of supporting the buttocks of the patient in the anus dosing process of the anorectal patient is achieved, and the problems that the exposed position of the anus is small when the buttocks are supported with one hand for dosing, multiple persons need to operate at the same time when the buttocks are supported with two hands, and the overall tedious process is improved are solved.

The invention provides an interventional catheter switching device, an interventional catheter and a using method of the interventional catheter. The interventional catheter switching device comprises a main catheter body and an inner catheter which is arranged on the outer side of the main catheter body in a sleeving mode and moves in the longitudinal direction, and at least part of the side wall of the main catheter body forms a guiding part which guides the inner catheter to move in the longitudinal direction when the inner catheter rotates relative to the main catheter body; at least one switching piece rotationally connected with the inner pipe is embedded in the circumferential direction of the inner pipe, and the switching piece forms a pivotal shaft which forms a set included angle with the longitudinal extending direction of the main pipe body; the switching piece is provided with a guide end guided by the guide part, and when any end part of the switching piece in the longitudinal direction is stressed, the switching piece rotates around the pivot shaft so as to release the guide state formed by the guide end and the guide part. According to the application, the mesh basket assembly can be quickly released or slowly released according to different positions where thrombus is formed in blood vessels of different patients, so that the thrombolysis treatment effect is prevented from being influenced.

The utility model relates to the technical field of surgical medical instruments, in particular to an expansion tube and a ureter sheath, which comprise a tube body, a first channel, a second channel and a third channel are axially arranged in the tube body, the first channel is used for a guide wire to pass through, the second channel is used for fluid to pass through, and the third channel is used for an optical fiber assembly to pass through. A notch is formed in the peripheral wall of the far end of the tube body, the notch penetrates to the end face of the far end of the tube body in the axial direction of the tube body, the notch penetrates to be communicated with the first channel in the radial direction of the tube body, and the notch corresponds to the first channel. The notch corresponding to the first channel is formed in the peripheral wall of the tube body, so that the exposed area of the far-end port of the first channel is increased, the insertion difficulty of a guide wire into the guide wire channel is reduced, an operator can quickly and accurately find the first channel used for insertion of the guide wire from the multiple channels on the expansion tube, and the operation efficiency is improved. The accuracy and convenience of inserting the guide wire into the first channel are improved, and the use convenience of the expansion tube and the ureter sheath is effectively improved.

A rotary sludge high-efficiency drying device belongs to the field of sludge drying technology. The invention includes a base, a support seat fixedly installed on the top of the base, and a drying cylinder rotatably mounted inside the support seat. A sludge crushing mechanism is installed inside the drying cylinder. A drive seat is slidably mounted on the top of the base, and a feed cover is fixedly connected to the top of the drive seat. A discharge port is rotatably connected to the side wall of the drying cylinder, which, after being rotated and unlocked, is used to discharge the dried sludge. A cone-shaped nozzle periodically pierces and retracts from the sludge blocks located at the bottom of the drying cylinder. This piercing breaks the hard outer shell of the sludge, creating pores and cracks inside the sludge. High-temperature hot air can directly penetrate into the interior of the sludge blocks through these pores and cracks, significantly increasing the heat transfer contact area, improving the moisture evaporation rate in the initial drying stage, and shortening the residence time of the sludge in the drying cylinder, thereby improving the overall drying capacity and efficiency of the equipment.

The utility model relates to a heating assembly and an aerosol generating device. The heating assembly comprises a base body; the first conductive layer is supported by the base body, and a first coupling region is arranged on the first conductive layer; the first heating layer is supported by the base body and comprises a first coverage area and a first side edge which defines at least part of the boundary of the first coverage area; the second heating layer is supported by the base body and comprises a second coverage area and a second side edge which defines at least part of the boundary of the second coverage area; the first coverage area and the second coverage area are arranged at an interval and respectively cover different areas of the first conductive layer, so that the first heating layer and the second heating layer are electrically connected with the first conductive layer; wherein the first coupling region is not covered by the first coverage region and the second coverage region and is defined between the first side edge and the second side edge, and a part of at least one of the first side edge and the second side edge is recessed towards a direction far away from the other side edge, so that the exposed area of the first coupling region is increased.

The invention belongs to the field of 3D printing, and particularly relates to a photocuring hydrogel composition, a photocuring hydrogel composite material and a preparation method. The photocuring hydrogel composition comprises water, a water-soluble compound containing a carbon-carbon double bond, a photoinitiator, titanium dioxide and a dispersing agent, in the photocuring hydrogel composition, the content of water is 47.5 wt% to 48.5 wt%, the content of the water-soluble compound containing the carbon-carbon double bonds is 43.7 wt% to 46.6 wt%, the content of the photoinitiator is 1.9 wt% to 3.9 wt%, the content of the dispersing agent is 0.3 wt% to 0.7 wt%, and the content of the titanium dioxide is 2.7 wt% to 6.3 wt%. The prepared photocuring hydrogel composite material is excellent in mechanical property and high in formaldehyde removal efficiency.

The utility model discloses an earphone box which comprises a box body, and the box body comprises a box body and a sliding block. The box body is provided with an accommodating cavity for accommodating earphones; the containing cavity comprises a cavity body located in the sliding block, and the cavity body of the sliding block is used for containing at least one part of the earphone; the box body is provided with a sliding block cavity for containing the sliding block, and the sliding block is connected with the box body in a sliding mode so as to be switched between a recycling position and a bouncing position; at the recovery position, the top surface of the sliding block does not protrude out of the top surface of the box body; and at the bouncing position, the top surface of the sliding block extends out of the box body. According to the earphone box, through structural optimization, the exposed area of the earphone can be increased on the premise that the appearance of the earphone box is not changed, and the convenience and safety of taking the earphone by a user are improved.

The invention provides a bimetallic particle modified g-C3N4 photocatalyst and a preparation method thereof, and application in photocatalytic cellulose-based biomass reforming hydrogen production. The photocatalyst comprises a g-C3N4 carrier and bimetallic particles loaded on the g-C3N4 carrier, the bimetallic particles are one of Au-Pt, Ag-Pt or Au-Pd, and the bimetallic particles are of a core-shell structure, with Au or Ag crystals as cores and Pt or Pd atomic clusters as shells. The invention first prepares g-C3N4, and uses a one-step photodeposition method in a lignocellulose-based biomass alkaline solution to prepare bimetallic nanoparticles of the core-shell structure, the bimetallic nanoparticles are modified on the g-C3N4, the active metals are highly dispersed on the core surface, the exposed active area is larger, the activity is higher, the bimetallic synergistic effect is more significant, the capture efficiency of photogenerated electrons and the intrinsic catalytic activity of hydrogen production are greatly improved, and the efficiency of photocatalytic cellulose-based biomass reforming hydrogen production can be greatly improved.

The utility model relates to material processing field discloses a kind of silicon oxide waste cleaning surface coating equipment, including mounting bracket, the inside of mounting bracket is provided with crushing adsorption component, reaction tank is fixedly connected with the side wall of mounting bracket, heating stirring assembly is provided in the inside of reaction tank, the crushing adsorption component includes crushing box, pivot, crushing box top fixedly connected with feed hopper.The utility model in this paper, motor one drives transmission shaft, crushing wheel is carried out to the crushing of silicon oxide waste, and then motor two drives belt, and magnetic stripe is carried out to the conveying and impurity screening process of waste, waste is sheared extrusion crushing using crushing wheel, increase coating exposure area, while magnetic stripe adsorption contains magnetic coating impurities, to realize the pretreatment cleaning of silicon oxide waste, avoid the problem that large waste coating is wrapped and difficult to clean, magnetic impurities mix and pollute subsequent process, crushing magnetic attraction integration reduces work flow, improves work efficiency.

The present invention relates to the technical field of PTFE film production, and discloses a hot pressing composite device for PTFE film production and a method of using the same, comprising a main body and a mounting mechanism, wherein the mounting mechanism is arranged on the top of the main body, and the mounting mechanism comprises two connecting frames, wherein the two connecting frames are fixedly connected to the top of the main body, and the top and bottom of the connecting frames are respectively fixedly connected to rotating slot frames, and the insides of the two rotating slot frames at the top and bottom of the two connecting frames are respectively rotatably connected to feed roller mounting frames, and the left and right sides of each feed roller mounting frame are rotatably connected to connecting strips. The angle between the two connecting strips of the present invention is increased, and the spacing between one end of the material roll installed by the two feed roller mounting frames is increased, and the spacing between the installation positions of the two material rolls can be adjusted according to the diameter of the material roll, so as to avoid affecting the production of the PTFE film due to the difficulty of installing the material roll on the feed roller mounting frame due to the excessive size, and to avoid the phenomenon of the two material rolls contacting each other after the material rolls are installed on the feed roller mounting frame.

This invention discloses a method for preparing and applying a non-high-temperature pyrolysis metal single-atom catalyst, comprising the following steps: dispersion: dispersing graphene oxide and a transition metal compound in an amide solvent to obtain a graphene oxide dispersion and a metal precursor dispersion; mixing: mixing the graphene oxide dispersion and the metal precursor dispersion, and homogenizing them under physical field-assisted treatment to obtain a mixed precursor suspension; solvothermal reaction: placing the mixed precursor suspension in a closed reaction vessel and performing a solvothermal reaction under autogenous pressure and heating conditions, and cooling after the reaction to obtain an intermediate product containing a metal-graphene hydrogel; purification and drying: washing and purifying the intermediate product with a polar solvent, followed by vacuum drying to obtain a non-high-temperature pyrolysis metal single-atom catalyst; grinding: grinding the obtained non-high-temperature pyrolysis metal single-atom catalyst into powder.

The invention discloses a catalytic material for hydrogen production from sodium borohydride and a preparation method of the catalytic material, and belongs to the technical field of heterogeneous catalysis and new energy development. The catalytic material for hydrogen production by sodium borohydride takes a porous metal material as a mechanical support body and takes a carbon-supported trimetal catalyst as an active component; the carbon-supported tri-metal catalyst is generated by carrying out carbonization reduction reaction on a metal organic framework compound, and structurally comprises a porous carbon material and nickel, cobalt and ruthenium tri-metal particles loaded on the surface of the porous carbon material. The catalytic material has relatively high catalytic activity, good cycle stability, structural stability, crystallization impact resistance and high air permeability. The catalytic material obtained by loading a nickel-cobalt-ruthenium trimetal hydroxide layer on the surface of the catalytic material through a pH gradient alkalization precipitation method has better catalytic activity, structural stability and cycle stability. The catalytic material is simple in synthesis method and suitable for large-scale industrial production, and a new thought is provided for hydrogen production of the hot alkaline concentrated sodium borohydride aqueous solution.

The invention discloses a honeycomb-shaped porous carbon material for a positive electrode of a lithium-sulfur battery and a preparation method of the honeycomb-shaped porous carbon material. Amorphous carbon is subjected to pore forming by using a sodium chloride template, cerium atoms are loaded for modification, finally, the porous carbon material with a three-dimensional structure is synthesized through high-temperature carbonization, and the honeycomb-shaped porous carbon material has the advantages that the positive electrode conductivity is enhanced, the positive electrode wettability is improved, and more accommodating space is provided for active substances in the synthesis and charge-discharge processes; more active centers are exposed, and the like. The cerium atoms serving as the active center can be combined with or give electrons, so that the electrochemical reaction electrochemical activity of the lithium-sulfur battery is improved by combining and giving the electrons. And meanwhile, the polarity of the cerium element is higher than that of a transition metal group element, the cerium with a proper content can provide a strong adsorption effect and adsorb polysulfide in the charge-discharge process, adsorption and catalytic conversion combination is realized, the utilization rate of active substances is effectively improved, the shuttle effect is inhibited, the electrochemical performance of the lithium-sulfur battery is improved, and the cycle life of the lithium-sulfur battery is prolonged.

The utility model discloses a retainer structure for improving the rotation stability of a bearing, which comprises two annular flanges and a plurality of window beams, the outer diameter surfaces of the two flanges are regular polygons, the two ends of each window beam are respectively connected with the regular polygon surfaces of the two flanges, and window holes between the adjacent window beams are respectively used for placing rollers of the bearing. Each window beam is of a rectangular plate-shaped structure and extends in the radial direction at the center of the surface of each edge of the regular polygon of the retaining edge to form an inclined face, and the inclined faces of the adjacent window beams support the rollers in the window holes. An oil passing hole is formed in the inner diameter of the window beam. According to the window beam forming mode of the retainer, the contact mode of the retainer and the roller is changed into line-surface contact, meanwhile, the contact length of the retainer and the roller is the length of the whole roller, and the stability of the contact mode of the retainer and the roller is improved. According to the utility model, the cage window beam is the inclined plane extending upwards between the two flanges, and the oil passing hole is designed on the inner diameter of the cage inclined plane window beam, so that the oil passing quantity is improved.

The invention relates to the technical field of oil and gas field exploration and development equipment, and discloses a single-gun-body in-situ rotary bullet-changing in-situ different-item perforator and an operation method thereof.The perforator comprises a shell, an annular cavity is formed in the shell, multiple pairs of through holes are oppositely formed in the two side walls of the annular cavity, and each pair of through holes are longitudinally formed; the two bullet supply parts are oppositely arranged on the shell, the rotary driving part is connected with the two bullet supply parts, and each bullet supply part is provided with a plurality of bullet storage bins corresponding to the second through holes, perforating bullets arranged in the bullet storage bins and a push-out part; the plurality of piezoelectric micro-valve modules are respectively arranged at the opposite through holes in the annular cavity and are used for controlling the opening degree of the valve; the control system is in signal connection with the rotary driving part, the plurality of push-out parts and the plurality of piezoelectric micro-valve modules; the perforator is simple in design and free of downhole fallen objects, double dynamic adjustment of variable energy and secondary phase can be achieved through a single tubular column, and the perforation efficiency and the reservoir transformation effect are remarkably improved.

The utility model discloses a kind of power module, it is related to power electronics technical field, wherein, power module includes substrate, chip component, power terminal and plastic package, chip component is installed in the substrate and is electrically connected with the substrate;Power terminal is electrically connected with the substrate, and is electrically connected with the chip component by the substrate;Plastic package covers the substrate, the chip component and part of the power terminal;Wherein, along the thickness direction of the power terminal, the power terminal has opposite first side and second side, the plastic package is covered to the first side length is greater than the second side length covered to it. The technical scheme provided by the utility model improves the power density of power module.

The invention discloses a high-temperature ultraviolet sterilization device for food production, which relates to the technical field of food sterilization equipment. The device comprises two spliced ​​shells, wherein the inner surface wall of each of the spliced ​​shells is fixedly installed with a plurality of groups of porcelain guide seats, the wiring terminals of each group of the porcelain guide seats are fixedly connected with ultraviolet lamp tubes, the outer surface wall of each ultraviolet lamp tube is wrapped with a light shield, a mechanical material guiding mechanism is arranged between one side of the outer walls of the two spliced ​​shells, and a storage and pushing mechanism is arranged on the outer surface wall of one of the spliced ​​shells. The mechanism improves the structure of the traditional equipment, and the hollow placement method can maximize the increase of the exposed area of ​​each food, and there is no need to turn the food over during the sterilization process, which greatly improves the sterilization efficiency of the equipment. At the same time, each food is placed individually and independently to avoid mutual shielding to cope with the problem of weak ultraviolet penetration, thereby further increasing the sterilization effect of the food and completely eliminating harmful bacteria contaminated in the food.

The invention discloses an information management storage device for financial accounting, and relates to the technical field of information management.The storage device comprises a cabinet body and a disinfection mechanism, a partition plate is arranged in the cabinet body, a taking and placing mechanism is arranged on the partition plate, the taking and placing mechanism comprises a shifting plate and a supporting plate, and the shifting plate is slidably connected with the partition plate; the supporting plate is arranged on the side, away from the partition plate, of the shifting plate and is in transmission connection with the shifting plate through a lifting assembly. When the shifting plate is located at the disinfection position, a first spacing distance is formed between the supporting plate and the shifting plate, and when the shifting plate is located at the initial position, a second spacing distance is formed between the supporting plate and the shifting plate; the disinfection mechanism is arranged on one side of the cabinet body, and the disinfection mechanism is used for disinfecting the storage area in the cabinet body; according to the storage device, through lifting of the supporting plate, hot air flows through the lower end of the supporting plate, the exposed area of paper files is increased through the supporting plate, the files close to the supporting plate are sterilized and disinfected through the air holes, the disinfection effect is improved, and cross infection caused by pathogens carried by the files is avoided.

The invention discloses tobacco stem longitudinal cutting equipment for cigarettes, which has the main design conception that the tobacco stem longitudinal cutting equipment for cigarettes is additionally arranged before a compression roller procedure of a cut stem production line, tobacco stems are cut in the longitudinal axis direction of the length, so that the rebound degree of the rolled tobacco stems is reduced, the rolled tobacco stems are kept in a sheet shape, and the tobacco stems are cut into tobacco shreds. The purpose of obtaining high-quality filamentous cut stems after the shredding process is achieved. The device specifically comprises a carding vibration groove, a cutting roller and a conveying roller, the carding vibration groove is used for evenly spreading tobacco stems and feeding the tobacco stems into an arc groove of the conveying roller in a longitudinal posture through longitudinal ripples, and the tobacco stems are cut into two halves in the longitudinal direction through the cutting roller matched with the conveying roller. The device is small in installed capacity and occupied area, has no adverse effect on the overall process layout, is suitable for cut stem production lines for obtaining cut stems in numerous cigarette enterprises, meanwhile, reduces the sectional area of tobacco stems, and can effectively reduce energy consumption of subsequent procedures.

The application discloses a preparation method and application of a PTFE biomimetic membrane based on a photocatalysis-filter coupling mechanism. The method comprises the following steps: firstly, blending polytetrafluoroethylene (PTFE) and a photocatalyst in a solvent; sequentially performing pushing, rolling, longitudinal stretching, transverse-longitudinal stretching and heat treatment operations on the blended slurry; and finally obtaining the PTFE biomimetic membrane with photocatalysis-filter functions. The PTFE biomimetic membrane can be used for air purification, atmospheric dust removal, industrial waste gas filtration and the like. The application adopts a photocatalysis free oxygen negative ion generation mechanism, orderly embeds isotactic photocatalysts and constructs a micro-rough surface to realize air purification efficiency improvement, pollutant screening and anti-pollution performance. In addition, the orderly arranged photocatalysts can greatly improve light scattering, and then improve the photocatalyst efficiency of the material.

The utility model discloses an assembling type power distribution cabinet body convenient to overhaul, which belongs to the field of power distribution cabinets and comprises two folded plates and two butt joint plates, an opening and closing door is arranged in the butt joint plate on the front side, butt joint blocks are fixedly connected to the front side and the back side of each folded plate, connecting pieces are arranged on the butt joint blocks, and the connecting pieces are connected with the folding plates. Two butt-joint grooves are formed in each butt-joint plate, the opposite sides of the two butt-joint plates make contact with the outer sides of the two folded plates, one side of each butt-joint block penetrates through and extends to the outer side of the corresponding butt-joint groove, and fixing strips are fixedly connected to the outer sides of the folded plates. According to the utility model, the assembled power distribution cabinet body is adopted, the cabinet bodies at multiple sides can be disassembled according to maintenance requirements in a later period while the storage of the power distribution equipment is not influenced, the exposed area of the power distribution equipment is improved, the maintenance operation of a user is facilitated, active heat dissipation is adopted, the internal temperature of the cabinet body is reduced, and the damage phenomenon of internal elements of the power distribution equipment is reduced.

The invention relates to the technical field of plastic film production, in particular to a slitting device for plastic film production. The slitting device comprises a machine body, a slitting mechanism, a temperature control mechanism and a slitting intelligent controller. The slitting mechanism comprises a main driving piece installed on the interval adjusting base, a cutting disc installed on an output shaft of the main driving piece, a protective cover installed on the outer side of the cutting disc and adjusting covers arranged at the two ends of the protective cover in a sleeving mode correspondingly. The temperature control mechanism comprises a temperature control cylinder, a backflow pipe communicated with the input end of the temperature control cylinder, a cooling pipe communicated with the output end of the temperature control cylinder and a cooling assembly installed on the temperature control cylinder. The slitting intelligent controller is provided with an analysis module, a heat dissipation module and a cooling module, by the adoption of the structure, the slitting intelligent controller adjusts the heat dissipation effect on the cutting disc in real time according to the temperature state of the cutting disc, an inner cavity of the temperature control cylinder is refrigerated through the cooling assembly, the heat dissipation effect on the cutting disc is enhanced, cold air is recycled, and energy is saved.

The invention discloses a device for measuring the stability of an implant in an alveolar bone and a preparation method of the device. The device comprises a connecting part, a supporting part and a magnetic part, the connecting part is used for fixing the device with an implant; one end of the supporting part is connected with the connecting part, and the other end of the supporting part is connected with the magnetic part; the magnetic part comprises a cylindrical magnetic part and a shell; the shell comprises a bottom surface and a side wall; the lower end part of the side wall is connected with the periphery of the bottom surface, and the side wall and the bottom surface form a cavity; the magnetic component is arranged in a cavity formed by the bottom surface and the side wall; a groove is formed in the upper end of the side wall and arranged in the length direction of the side wall. The magnetic component in the device is not easy to fall off, and the magnetic field distribution is relatively uniform.

The application discloses a wear-resistant and high-temperature-resistant polyester fiber and a preparation method thereof, and belongs to the technical field of polyester processing, and is used for solving the technical problem that the wear resistance and high-temperature resistance of the polyester fiber in the prior art need to be further improved, and specifically comprises the following steps: adding modified PET, modified filler and auxiliary additive into a double-screw extruder, melt-extruding, spinning, and obtaining a polyester fiber precursor; the application is characterized in that an epoxy group is modified on a carboxylated carbon nanotube through a free radical polymerization reaction to obtain a modified filler, and the modified filler, the auxiliary additive and the modified PET are melt-spun together to obtain the polyester fiber precursor, a modified antibacterial agent is prepared through a coprecipitation method, an antibacterial liquid is further prepared, and the polyester fiber precursor is immersed in the antibacterial liquid to obtain the polyester fiber, so that the wear resistance and high-temperature resistance of the polyester fiber are improved, and the antibacterial performance of the polyester fiber is also improved.

The invention belongs to the technical field of membrane catalysis and separation, and particularly relates to a Cu (I)-MOF mixed matrix membrane, a preparation method, a photocatalysis-separation integrated device using the Cu (I)-MOF mixed matrix membrane and application of the Cu (I)-MOF mixed matrix membrane. The preparation method comprises the following steps: mixing Cu (I)-MOF and a PEGBEM-POEM copolymer solution according to a specific mass ratio to prepare a membrane casting solution, scraping the membrane, and drying to obtain the mixed matrix membrane. Wherein the Cu (I)-MOF is synthesized from Hdmtz, Hdetz and copper oxide nano particles. The integrated device comprises a reactor shell provided with a plurality of layers of parallel partition plate assemblies, the mixed matrix membrane is fixed in the partition plate assemblies, the internal space is divided into reaction-separation units which are connected in series, and a light source is arranged. After wet CO2 is introduced into the device, a photocatalytic reduction reaction is carried out on the surface of the membrane under illumination to generate CO, and in-situ separation and multi-stage purification of CO and O2 are realized by utilizing the high selectivity of the membrane to CO. According to the invention, high-efficiency conversion and separation from CO2 to high-purity CO are realized.

The invention provides a preparation process and antioxidant application of hermetia illucens polypeptide. The preparation process comprises the steps of cleaning and disinfection, crushing, desugaring, degreasing, enzymolysis, separation and purification and the like. The method comprises the following steps: washing hermetia illucens larvae with clear water, soaking in saline water and carrying out ultraviolet radiation treatment; then, adopting a superfine grinding technology to obtain larva powder, and performing desugaring treatment through two times of centrifugation; then, absolute ethyl alcohol and normal hexane in a specific proportion are used for degreasing the precipitate under a certain condition; adding a compound enzyme into the degreased hermetia illucens powder, carrying out enzymolysis under the assistance of sweep-frequency pulse ultrasound, and finally, carrying out ultrafiltration treatment to obtain hermetia illucens polypeptide with the molecular weight of less than or equal to 1kDa, the polypeptide prepared by the process has antioxidant activity, can be applied to preparation of animal feeds and organic fertilizers, and is especially suitable for aquatic animals and mammals. The hermetia illucens polypeptide disclosed by the invention is simple and efficient in preparation process, and the obtained polypeptide has remarkable oxidation resistance and wide application prospects.

The present invention relates to the technical field of battery safety detection. The present application discloses a safety performance test device for lithium batteries, including a connecting rod, a slide rail is provided on the back of the outer surface of the connecting rod through integral casting, the slide rail is connected to a limit seat by sliding fit, the back of the slide rail is matched with an adjustment gear I by gear meshing, an adjustment motor II is fixedly installed by bolt connection at a position near the top of the back of the outer surface of the connecting rod, and an adjustment gear II is fixedly installed at one end of the output shaft of the adjustment motor II by bolt connection. The adjustment gear II is connected to an arc-shaped rack by gear meshing, so that the overall inclination angle of the adjustment device can be adjusted, thereby changing the incident angle when the intrusion device contacts the top of the lithium battery during the experiment, so that the bottom of the intrusion device can penetrate the top of the lithium battery at a certain inclination angle, thereby better simulating the state of the battery after being hit by projectiles from various directions in actual situations.

The invention provides a heteroatom-doped honeycomb carbon covalent coupling cobalt / cobalt telluride heterojunction nano composite material, a preparation method and application thereof, and the heteroatom-doped honeycomb carbon covalent coupling cobalt / cobalt telluride heterojunction nano composite material is characterized in that the preparation method comprises the following steps: step S1, citrate and nitrogen-containing small molecules are dissolved and mixed, and heteroatom-doped honeycomb carbon is obtained through evaporation, carbonization and etching; s2, dissolving the heteroatom-doped honeycomb carbon in a mixed solvent, uniformly stirring, adding an organic ligand into the uniformly stirred solution, and reacting to obtain a metal organic framework / heteroatom-doped honeycomb carbon nano composite material; and S3, placing the metal organic framework / heteroatom doped honeycomb carbon nano composite material in a porcelain boat, transferring the porcelain boat to the downstream of a tubular furnace, placing tellurium powder in the upstream of the tubular furnace, and calcining in an inert gas atmosphere to obtain the heteroatom doped honeycomb carbon covalent coupling cobalt / cobalt telluride heterojunction nano composite material.

The invention discloses a dimer acid vertical tiling purification device, and relates to the technical field of dimer acid purification, the dimer acid vertical tiling purification device comprises a base, the top end of the base is fixedly connected with a concentration outer cover, the upper part in the concentration outer cover is fixedly connected with a partition plate, and a plurality of groups of stirring assemblies and a plurality of groups of lifting evaporation assemblies are arranged below the partition plate; a comprehensive driving assembly used for driving the stirring assembly and lifting the evaporation assembly is arranged above the partition plate. The stirring assembly comprises a rotating rod, and a plurality of stirring paddles are fixedly arranged on the outer side of the rotating rod; the stirring assembly is arranged to promote the flow of the dimer acid solution in the heating process, so that the temperature of the dimer acid solution is balanced, and the lifting evaporation assembly is arranged to lift the dimer acid solution and form a thin layer to flow downwards, so that the exposure area of the dimer acid solution in the environment can be effectively increased; the evaporation efficiency of the dimer acid solution can be effectively improved, and the concentration effect is improved.

The utility model discloses a kind of parallel riveting terminal, including negative copper badge and positive copper badge, negative copper badge and positive copper badge are all "C" shape, the relative position of negative copper badge and positive copper badge is "inserting opposite" structure, then the center line of input connector one and input connector two extension edge direction coincides, so that the space occupied by entire structure greatly reduces, installation space is saved, negative output end connecting hole and positive output end connecting hole are designed in same side, with similar position, it is convenient for the external wiring of this terminal in use process, that is, through the connection of end, the communication of large current is realized, while through the connection of negative copper badge and positive copper badge, it can increase exposed area, realize better heat dissipation, avoid the current of terminal connecting place to appear local overheating condition.