32results about How to "Achieve destruction" patented technology

The invention relates to a flame-retardant rubber and plastic thermal insulation material and a preparation method thereof, and belongs to the technical field of high polymer materials. The flame-retardant rubber-plastic thermal insulation material comprises the following components in parts by weight: 50-75 parts of nitrile rubber, 20-45 parts of PVC resin, 10-15 parts of a plasticizer, 1-10 parts of a foaming agent, 1-5 parts of a foaming promoter, 10-40 parts of a composite flame retardant and 2-6 parts of a modified anti-aging agent, cyclohexanehexol phosphate in the composite flame retardant is heated and dehydrated into phosphoric acid, a barrier layer is formed to inhibit release of combustible materials, and dimethylallylamine combusts to absorb heat and cooperates with phosphorus-oxygen double bonds for flame retardance; a pre-product in the modified anti-aging agent reacts with a free radical of a rubber molecular chain, so that the heat resistance and the aging resistance of the material are improved, a maleimide group enhances an intermolecular acting force, the rigidity and the heat resistance of the molecular chain are improved, and material aging caused by high temperature is reduced; the flame-retardant rubber and plastic thermal insulation material prepared by the invention not only has an excellent anti-aging effect, but also has good flame retardance.

The invention discloses a preparation method and application of an artemisia apiacea fermentation extracting solution. The artemisia annua fermentation extracting solution is prepared from artemisia annua, ultrapure water, probiotics and the like. The preparation method comprises the following steps: picking fresh artemisia annua, cleaning, drying and sterilizing; crushing, sieving, and selecting artemisia annua particles with proper particle sizes; adding the selected artemisia annua particles, ultrapure water and probiotics into a temperature-controlled closed stirring reaction device, and carrying out strict anaerobic fermentation; separating a liquid phase part and a solid phase part from the obtained fermentation product through five filtering processes, performing microfiltration on the liquid phase part to remove thalli, and adding 1, 2-hexanediol and p-hydroxyacetophenone to obtain the artemisia apiacea fermentation extracting solution. The extracting solution prepared by fermenting natural plant raw materials and probiotics is high in molecular weight uniformity and high in physiological activity, retains the functional effect of sweet wormwood, is safe, low in sensitivity and low in irritation, and is suitable for being added into various daily chemical products.

The invention relates to the technical field of tea leaf rolling fermentation, and discloses a full-automatic tea leaf rolling fermentation device which comprises a rolling disc, a rotating disc is arranged at the top of the rolling disc, a rolling mechanism is arranged at the bottom of the rotating disc, and the rolling mechanism comprises an annular groove, a rolling roller, a round rod, a movable rod and a first reset spring. Rotation of the rotating disc is matched with the rolling disc which swings circumferentially on the spherical supporting rod, a plurality of rolling rollers are driven to roll circumferentially at the top of the rolling disc, and the rolling disc swings circumferentially to achieve the effect of simulating manual rolling, so that the purpose of rolling tea leaves is achieved, and the purposes of breaking tea leaf cell walls and improving tea leaf quality are achieved. Meanwhile, when the rotating disc rotates, an elastic and arc-shaped scraping plate is driven to scrape the tea leaves attached to the upper portion of the rolling disc and is matched with circumferential rotation to generate a discharging effect, so that the tea leaves can be pushed to the outer edge of the rolling disc.

The utility model relates to the technical field of weeding equipment, in particular to unmanned weeding equipment, which comprises an unmanned weeding machine and is characterized in that rotatable weeding blades are arranged at the bottom of the unmanned weeding machine, a crushing device is arranged at the rear end of the unmanned weeding machine, guide plates are arranged on two sides of a feed port at the bottom of the crushing device, and the guide plates are arranged on the rear end of the unmanned weeding machine. A crushing device is arranged at the bottom of the unmanned weeding machine, a crushing rod is rotatably arranged in the crushing device, and a soil turning device capable of longitudinally moving is arranged on one side of the crushing device. The soil turning device capable of ascending and descending is arranged at the rear end of the crushing device, so that the soil turning device turns over the land, grass roots are thoroughly damaged, re-germination is avoided, the purpose of thorough weeding is achieved, and the problem that the grass roots in the soil cannot be removed is solved.

The invention relates to a phase change energy storage device, in particular to an enhanced heat transfer type phase change energy storage device which comprises energy storage cavity subunits, a phase change material, a runner cover plate, runner side plates and fractal fins. The phase change materials are respectively filled in the energy storage cavity subunits; the fractal fins are fixed on the inner wall surfaces of the energy storage cavity subunits; the flow channel cover plates are installed above and below the energy storage cavity subunits respectively, the flow channel side plates are installed on the left side and the right side of the energy storage cavity subunits respectively, communicated flow channels are arranged in the flow channel cover plates and the flow channel side plates respectively, the flow channel cover plates at the upper end and the lower end are provided with flow channel outlets and flow channel inlets respectively, and flow channel partition plates are installed in the flow channels of the flow channel side plates; a strengthening element round protrusion is arranged in the runner, and an external magnetic field element is fixed to the outer side of the runner side plate. The latent heat energy storage device is based on active magnetic field strengthening and passive structure strengthening, the heat transfer rate of the phase change material can be increased, the heat transfer performance of the system can be improved, and therefore the heat exchange efficiency of a heat source and the energy storage device is improved.

The invention relates to the technical field of culture medium filtering, in particular to a stem cell culture medium filtering device which comprises a support, a mounting shell is arranged on the support, a screen drum, a driving unit, a feeding hopper, a discharging pipe and a high-pressure air duct are arranged on the mounting shell, the screen drum is horizontally arranged and located in the mounting shell, and the driving unit is used for driving the screen drum to rotate; the feeding hopper communicates with the interior of the screen drum, the discharging pipe communicates with the bottom of the mounting shell, the high-pressure air duct communicates with the top of the mounting shell, a high-pressure air pump communicates with the high-pressure air duct, and the high-pressure air pump can spray high-pressure air to the outer top wall of the screen drum through the high-pressure air duct; an impeller unit and a buoyancy unit are arranged in the screen drum, the impeller unit is rotationally connected to the screen drum and can be blown to rotate by high-pressure gas penetrating through screen holes of the screen drum, and the impeller unit abuts against the inner top wall of the screen drum in the rotating process and intermittently presses down the buoyancy unit. The filtering efficiency of the cell culture medium can be improved.

The invention relates to an anti-scar frozen microneedle patch as well as a preparation method and application thereof. The anti-scar freezing microneedle patch comprises a substrate layer and a microneedle array, the material of the microneedle comprises polyvinyl alcohol; the substrate layer and the microneedle array are obtained through liquid nitrogen freezing. The invention also provides a preparation method of the anti-scar frozen microneedle patch, which comprises the following steps: mixing the substrate layer material with the curing agent, pouring, heating in vacuum and standing to obtain the substrate layer; injecting a polyvinyl alcohol solution onto the substrate layer, freezing and forming to obtain the microneedle patch; and freezing the microneedle patch in liquid nitrogen to obtain the anti-scar frozen microneedle patch. The invention further provides application of the anti-scar frozen microneedle patch in preparation of drugs for treating hypertrophic scars. The invention solves the problems of unsatisfactory treatment effect, large side effect, high price and high technical requirement in the scar treatment method.

The present invention discloses a device and a drying method for preventing columnar lignite specimens from drying out and cracking, and belongs to the technical field of coal quality analysis. The device includes a cement casting mold, which is used to encapsulate the periphery of the columnar lignite specimen to limit the cement casting area; a demolding device, which is connected to the outer surface of the columnar lignite specimen before casting, and is used to destroy the hardened cement shell encapsulating the outside of the coal specimen after drying; a bottom plate, which is used to support other components of the device; and a cement pad, which is used to block the bottom of the cement casting mold. Drying the columnar lignite specimen using the device disclosed in the present application can maintain the original structure of the columnar lignite specimen to the greatest extent. The coal specimen will not produce large cracks during the drying process, and will not directly break into coal particles, which is convenient for subsequent observation; and the molding process is simple, and the demolding process can also ensure the integrity of the sample. There is no technical difficulty in operation, and it is worthy of popularization and application.

The present invention discloses a blasting method and a charging device and an explosive bag structure for reducing damage to pipe shed support, belonging to the technical field of tunnel blasting construction, including: setting a pre-splitting zone near the bottom of the pipe shed on the face, setting a plurality of blastholes on the pre-splitting zone, and detonating the explosives after filling the blastholes with explosives; then setting a plurality of blastholes near the bottom of the pre-splitting zone on the face, and detonating the explosives after filling the blastholes with explosives; then setting a plurality of blastholes on the blasting surface between the middle of the face and the bottom of the pre-splitting zone, and detonating the explosives after filling the blastholes with explosives; then setting a plurality of blastholes near the bottom of the face below the middle of the face, and detonating the explosives after filling the blastholes with explosives. This scheme adopts the scheme of pre-splitting and polishing blasting, and can perform pre-splitting blasting below the pipe shed before slotting blasting to form pre-cracks, reduce the propagation of slotting blasting vibration, and thus reduce damage to the pipe shed.

The utility model discloses a medicine container destruction equipment relates to medical waste technical field, wherein, medicine container destruction equipment includes frame, and the frame has first feeding opening, and verification module can at least check the identity of operator and the information of medicine container to be destroyed, the smashing module has the feeding port and the discharge gate, the feeding port is linked with first feeding opening, and the smashing module is used for smashing the medicine container to be destroyed of entering the feeding port, the sharp tool box is linked with the discharge gate, is used for containing the medicine container and the residual medicine after smashing, and the sharp tool box is equipped with the reaction material that can react with residual medicine, and the review module is located between first feeding opening and the feeding port, and the review module is used for reviewing the information of medicine container to be destroyed, and the medicine container to be destroyed after review is put into the feeding port. The utility model provides technical scheme can be convenient to the information tracking of medicine itself, and the medicine container destruction is convenient, and the environmental pollution is reduced.

The invention provides a hydrogen-suitable exhaust nozzle integrated heat regenerator, and relates to the technical field of high-end equipment manufacturing, and the hydrogen-suitable exhaust nozzle integrated heat regenerator comprises an exhaust nozzle forming a fuel gas flow channel; the gradient double-path heat return channel is embedded between the outer wall surface and the inner wall surface of the exhaust nozzle, is integrally formed with the exhaust nozzle, and is used for circulating a hydrogen medium to absorb gas heat; the gradually-changed double-path heat return channel comprises a hydrogen conveying pipe and a hydrogen return pipe which are used for inputting and outputting a hydrogen medium, a plurality of runway-shaped flow channels arranged at intervals in the axial direction and a plurality of confluence channels, each flow channel is provided with an arc-shaped channel extending in the circumferential direction, each confluence channel is connected between every two adjacent runway-shaped flow channels, and each confluence channel is communicated with the corresponding runway-shaped flow channel. And after the hydrogen medium flows in from one runway-shaped flow channel, the hydrogen medium is divided into two branches which reversely flow through the arc-shaped channels on the two sides respectively, and then enters the next runway-shaped flow channel after being converged by the converging channel, so that a double-path roundabout flow path is formed. According to the liquid hydrogen heat recovery device, efficient recovery of fuel gas heat in the flowing process of liquid hydrogen is achieved through the gradually-changed double-path heat recovery channel and the reinforced fin structure.

The invention discloses an evaporator and a PUREX process system, the evaporator comprises a heating chamber and a separation chamber, the heating chamber is an annular space heating chamber, the annular space heating chamber is provided with a feed liquid inlet and a concentrated liquid outlet, a heating piece is arranged outside the heating chamber, and the hollow part is filled with neutron poison; the bottom of the separation chamber is communicated with the top of the heating chamber, a secondary steam outlet is formed in the top of the separation chamber, and a leacheate inlet is further formed in the separation chamber. The evaporator is simple in structure, large in capacity, long in discharging compartment time, low in operation frequency, high in purification efficiency, capable of meeting critical safety and quite stable in operation, evaporation and concentration of plutonium-containing feed liquid can be achieved, plutonium in a post-treatment plant can be recycled, and plutonium loss is reduced.

The invention discloses an express box with an express information destroying function and a using method thereof, and belongs to the technical field of express packaging technology, the express box comprises an express box, the express box comprises a box body, a cover body, a bill pasting groove, a buckle lock and a first bill outlet; the front ends of the box body and the cover body are locked and connected through a buckle lock, the sheet pasting groove is formed in the rear side of the upper end of the cover body, and the sheet outlet I is formed in the rear side wall of the cover body and is communicated with the sheet pasting groove; an express waybill pasting driving device used for pasting express waybills is installed at the inner end of the waybill pasting groove, the express waybill pasting driving device is further used for driving the express waybills on the express waybill pasting driving device to be discharged from the first waybill outlet, and a protection sealing limiting assembly used for protecting the express waybills on the express waybill pasting driving device and blocking the first waybill outlet is installed on the cover body. The box body is hinged to the rear side of the cover body through an express waybill pasting driving device; by means of the mode, the express waybill can be destroyed and stripped when the express box is opened.

The utility model provides a composite function bridge separation type girder section structure which comprises two steel box girder main boxes, two steel box girder cantilevers, two triangular truss type hollow partition plates, a cross beam between the boxes, pipe grooves in the boxes and pipelines, and the triangular truss type hollow partition plates are arranged in the two steel box girder main boxes; the in-box pipe groove is formed in the triangular truss type hollow partition plate; a pipeline is arranged between the two steel box girder main boxes; the inter-box cross beam is connected with the two steel box girder main boxes and is used for supporting the pipeline; the two steel box girder cantilevers and the two steel box girder main boxes are welded into a whole or connected through bolts. According to the scheme of the bridge section structure with the composite function, the pipelines can be arranged and fixed on the bridge in a hidden mode through the bridge section structure, the influence on bridge landscapes such as a beam bridge, an arch bridge, a cable-stayed bridge and a suspension bridge is reduced, the influence on pedestrian vision is reduced, and high economical efficiency, attractiveness, safety and ingeniousness are achieved.

The integrated rock debris cleaner comprises a first connector, a middle connector and a second connector which are fixedly connected with one another, and the first connector and the second connector are located on the two sides of the middle connector respectively. Working wing plates are fixedly connected to the outer side of the middle connector and evenly arranged on the outer side of the middle connector in the circumferential direction at intervals. Each working wing plate is of a V-shaped structure, and a V-shaped working flow channel is formed between every two adjacent working wing plates; the outer side of the working wing plate is further connected with a plurality of wear-resisting heads. In the using process, rock debris is smashed through the V-shaped structure of the working wing plate and the inclined cutting edge, and rock debris cleaning is facilitated. Meanwhile, the working flow channel of the V-shaped structure generates double-acting stirring during rotation, turbulent flow is formed to stir the rock debris, and the debris bed is damaged and removed. And the wear-resistant head on the outer side of the working wing plate plays roles in protecting the working wing plate and reducing direct contact, so that the service life of the cleaner is prolonged, and the working stability of the cleaner is improved.

The invention provides a thermal debonding type single-component moisture-curing polyurethane hot melt adhesive and a preparation method thereof, and the thermal debonding type single-component moisture-curing polyurethane hot melt adhesive is mainly characterized in that thermal expansion microspheres with proper conditions and quantity ratio are introduced into a raw material system of a specific single-component moisture-curing polyurethane hot melt adhesive; in the bonding requirements of soft base materials such as leather and fabrics, a better bonding effect can be provided; in the recycling and reusing requirements of soft base materials such as leather and fabric, the adhesive layer can become fluffy under the specific temperature condition, and therefore the effects that the adhesive layer is damaged, and the base materials are effectively recycled are achieved. Meanwhile, the preparation method is simple, easy to control, mild in condition and suitable for large-scale industrial production.

The present invention proposes a wall-forming machine for continuous cement-soil interlocking pile retaining walls in foundation pits, comprising: a power device, on which an air faucet and a water faucet are provided; a drill rod mechanism connected to the power device, wherein the drill rod mechanism is used to form a plurality of interconnected continuous pile holes at one time, and the drill rod mechanism comprises a plurality of drill rods and a drill bit located at the lower part of the drill rod; a grouting pipe and an air injection pipe are provided inside the drill rod and the drill bit, the upper ends of the grouting pipe and the air injection pipe are respectively connected to the water faucet and the air faucet, and the lower ends of the grouting pipe and the air injection pipe are connected to the drill rod; two adjacent drill bits are staggered in the horizontal transverse and longitudinal directions, and their projections in the vertical direction have overlapping parts; the drill rod comprises at least two coaxially arranged straight rod sections, and at least one curved section located between the two straight rod sections; the wall-forming machine also comprises: a first device, installed at the curved section, suitable for breaking the soil portion protruding toward the inner side of the hole on the inner wall of the continuous pile hole.

This invention relates to the field of template technology, specifically an adjustable template, comprising a template body, an adjustment mechanism, an installation mechanism, a support mechanism, a splicing mechanism, and a sealing mechanism. The adjustment mechanism facilitates adjusting the template to create drainage ditches suitable for different road surfaces, improving work efficiency and avoiding the waste of resources associated with custom templates. The installation mechanism allows for the creation of drainage ditches of different shapes through different combinations of bottom templates to meet various needs, improving the template's applicability. The support mechanism not only supports the interior of the telescopic box but also restores the slightly deformed telescopic box, improving the stability and service life of the device. The splicing mechanism improves the connection stability between templates, further enhancing the stability of the device. The sealing mechanism prevents cement from entering the template and damaging the internal structure during use, further improving the stability and service life of the device.

The invention discloses a method for producing clean fuel by utilizing sludge based on piezoelectric catalysis assisted hydrothermal carbonization, and particularly relates to a method for preparing a piezoelectric catalyst with a strong piezoelectric effect by adopting a hydrothermal synthesis method and a heterostructure. The method comprises the following steps: mixing sludge with deionized water, and adding a piezoelectric catalyst for piezoelectric catalysis pretreatment; and then carrying out hydrothermal carbonization reaction on the pretreated sludge at 180-240 DEG C, and carrying out solid-liquid separation after the reaction to obtain clean hydrothermal carbon. The piezoelectric catalyst adopts a Bi2WO6 (at) SnS2 heterojunction structure, and under the action of an ultrasonic machine, free radicals are generated, extracellular polymeric substances and cell structures in sludge are destroyed, nitrogen-containing substances are released, a Maillard reaction is inhibited, and generation of nitric oxide is reduced. According to the invention, the nitrogen content in the hydrothermal carbon is reduced, the resource utilization of the sludge and the production of low-nitrogen clean fuel are realized, and the method has the advantages of improving the energy efficiency, reducing the operation cost and reducing the environmental pollution.

The invention relates to a ceramic ultrafiltration membrane composite oxidation adsorption wastewater treatment method, which comprises that wastewater to be treated sequentially passes through a ceramic ultrafiltration membrane filtration unit, an oxidation reaction unit and an adsorption purification unit. Wherein the average pore size of the ceramic ultrafiltration membrane is 10-50nm, the transmembrane pressure difference is 0.15-0.4 MPa, the membrane surface flow velocity is 1.5-4.5 m / s, and efficient solid-liquid separation is realized; the ultrafiltration produced water enters an oxidation reaction unit and is subjected to catalytic oxidation with ozone and / or hydrogen peroxide under the action of a supported catalyst, and the dosage of the ozone is 40-100 mg / L; the oxidized effluent is deeply purified through a modified activated carbon adsorption column, and the empty bed flow rate is 10-18 BV / h. The oxidation unit and the adsorption unit can be further integrated to form a series integrated reaction column. The system has the functions of concentrated solution circulating oxidation, gas-water combined backwashing, chemical enhanced cleaning and on-line monitoring and automatic control. The method can effectively remove refractory organic matters and heavy metals, is stable in operation, is excellent in effluent quality, and is suitable for advanced treatment of high-concentration industrial wastewater.

This invention discloses a multi-level anti-collision device for bridge piers. The device comprises multiple anti-collision units of the same or different shapes, connected end-to-end to form an anti-collision ring that surrounds the bridge pier. Each anti-collision unit, along the radial direction of the anti-collision ring, comprises, from the outside to the inside, a box structure, a flexible tube, and a protective cover fixedly connected to the box structure. The flexible tube is filled with energy-absorbing and vibration-damping material. The box structure is made of rigid material, and the protective cover is made of non-rigid material. The box structure includes a top surface and a bottom surface opposite to each other. The top surface has a recessed portion, which, together with the inner wall of the protective cover, forms a tubular accommodating space that fits with the flexible tube. The bottom surface is located on the outer ring side of the anti-collision ring. This multi-level anti-collision device for bridge piers aims to solve the technical problems of high cost and severe damage to ships caused by existing bridge pier protection devices.

The invention relates to the technical field of biological extraction technology, in particular to a fresh ganoderma lucidum active ingredient stable extraction and activity maintenance method which specifically comprises the following steps: a, obtaining ganoderma lucidum micro powder; b, obtaining ganoderma lucidum micro powder treated by a pulsed electric field; pre-treated lucid ganoderma micro powder is obtained; wall-broken lucid ganoderma micro powder is obtained; c, obtaining an extracting solution; d, obtaining a concentrated filtrate; e, obtaining freeze-dried powder of the active ingredients of the fresh lucid ganoderma; f, performing ultrahigh-temperature instantaneous sterilization on the freeze-dried powder of the active ingredients of the fresh lucid ganoderma, and performing vacuum sealing, filling and storing; compared with the prior art, the extraction method of the fresh ganoderma lucidum has the advantages of high efficiency, environmental protection, stability, easiness in preservation of the activity of effective components and the like. The countercurrent extraction adopted in the invention can fully utilize the concentration gradient of the solid phase and the liquid phase in the system, so that the higher-concentration balance can be achieved when the extracting solution is discharged, the extraction rate of the extracted product can be improved, the energy consumption can be saved, and the extraction time can be shortened.

This utility model relates to the field of asphalt pavement testing technology, specifically to an asphalt pavement compaction testing device. The device comprises a vehicle body with a square hole, inside which a nucleus-free density meter is installed. A connecting rod is connected to the outside of the nucleus-free density meter, and connecting blocks are detachably connected to both sides of the connecting rod. A support frame is installed on the top of the vehicle body, and two lifting components are symmetrically arranged inside the support frame, with the lifting components drivingly connected to the connecting blocks. A handle is fixedly installed at one end of the vehicle body, and a horizontal fixing plate is installed above the handle. A controller is installed on the fixing plate, and the controller is connected to the nucleus-free density meter via a wire. A traveling component is installed at the bottom of the vehicle body. This utility model can detect the compaction degree of asphalt pavement without damaging the asphalt pavement; it also reduces the time required for detecting asphalt pavement compaction, enabling rapid detection and improving testing efficiency.

The invention discloses a preparation method of gallic acid, and belongs to the technical field of extraction, separation and purification of traditional Chinese medicine components. The preparation method of gallic acid provided by the invention comprises the following steps: dispersing Chinese coriaria leaf powder in 0.25-1mol / L of aqueous alkali, reacting at 70-100 DEG C for 0.5-2 hours, and separating to obtain an alkali extraction stock solution and extracted leaf residues; continuously reacting the alkali extraction stock solution at 70-100 DEG C for 1-3 hours to obtain an alkali extraction solution; adding the extracted leaf residues into a 0.5-2 mol / L acid solution, reacting for 0.5-2 hours at the temperature of 80-110 DEG C, and separating to obtain an acid extraction stock solution; continuously reacting the acid extraction stock solution at 80-110 DEG C for 1-3 hours to obtain an acid extraction solution; and neutralizing the alkali extracting solution and the acid extracting solution to obtain a gallic acid extracting solution, and purifying the gallic acid extracting solution through macroporous adsorption resin to obtain a byproduct and gallic acid. Through a two-step hydrolysis method of low-concentration alkaline hydrolysis and acid hydrolysis, extraction of gallic acid and recovery of by-products are realized at the same time, so that simple, efficient, green, environment-friendly and low-cost preparation of gallic acid is realized.

The invention discloses a method for regulating and controlling the migration rate of water in an alkaline zinc-iron flow battery. By selecting the alkali metal salt additives with different hydrophilic and hydrophobic characteristics (judged according to the size of free energy change combined with water molecules) of anions, the number and size of water molecule clusters in the negative electrode electrolyte can be regulated and controlled, so that the water migration rate in the battery circulation process is regulated. Meanwhile, a related prediction calculation model is provided, and the incidence relation between the free energy change of combination of anions and water molecules and the water migration rate of the zinc-iron flow battery is established. The alkali metal salt additive with the high-hydrophobicity anions can remarkably reduce the migration rate of the electrolyte, so that the cycle life of the battery is prolonged, and the maintenance cost of the electrolyte in the actual use process of the battery is greatly reduced.

The utility model provides an offshore icebreaking structure and an icebreaking system, the icebreaking structure comprises a first frustum, a second frustum and a third frustum which are sequentially arranged from top to bottom, the cross sectional area of the first frustum is sequentially increased from top to bottom, the cross sectional area of the second frustum is sequentially increased from top to bottom, and the cross sectional area of the third frustum is sequentially increased from top to bottom. The cross sectional area of the third frustum is sequentially reduced from top to bottom, the bottom plane of the first frustum and the top plane of the second frustum are the same in shape and size, the vertex angle of the first frustum is smaller than that of the second frustum, the bottom of the third frustum is connected with an anchor chain, and the anchor chain is used for being connected with a seabed mud surface in an anchoring mode; the effect of destroying the sea ice can be effectively achieved by adopting a small project amount, the influence of the sea ice on offshore photovoltaic structures, offshore wind power structures and other structures can be greatly reduced, and the safety of offshore structural bodies is improved.

The invention belongs to the technical field of communication, and provides a loop detection method and system, a storage medium and electronic equipment, and the method comprises the steps: determining a detection period, a packet sending frequency and a counting threshold value of a loop detection protocol, configuring the loop detection protocol at a network direct connection port of the equipment, and configuring a detection MAC value of the equipment; sending a detection message according to the packet sending frequency and the detection period; receiving a protocol message according to the detection period; sequentially comparing the information in all received protocol messages with the information of the device home terminal, determining whether to add one to count according to the comparison result, and determining the sum of counts; and comparing the counting sum with a counting threshold value, and controlling the connection state of the network direct connection port according to a comparison result. According to the equipment and the external network, the packet sending frequency, the detection period and the counting threshold value are set, the loop detection protocol is only set on the network direct connection port, the network direct connection port is blocked when the loop is formed, and the problems that the network forms the loop and the equipment utilization rate is low are effectively solved.

The present invention discloses a multimedia media destruction machine, including a whole machine housing, wherein the whole machine housing is provided with a two-stage crushing mechanism, which is arranged in a crushing bin of the whole machine housing, including crushing tools and a rotor drum grinding assembly arranged up and down, wherein the rotor drum grinding assembly can be pulled out and arranged below the crushing tool, and a crushing bin door corresponding to the crushing bin is arranged on the front of the whole machine housing; a dust removal and purification filter cartridge is arranged in the dust removal and purification bin of the whole machine housing, including a negative pressure dust removal fan and a dust removal filter barrel, and a dust removal and purification bin door corresponding to the dust removal and purification filter cartridge is arranged on the left side of the whole machine housing. The present invention adopts a closed structure as a whole, and the two-stage crushing mechanism realizes complete destruction of the media and improves crushing efficiency. The pull-out rotor drum grinding assembly is easy to take and put, and is convenient for inspection and maintenance. The built-in dust removal and purification filter cartridge can filter the air, remove harmful substances, and improve environmental safety.

The invention discloses a high-strength nano composite screw material based on a concentric fiber cylinder structure and a preparation method of the high-strength nano composite screw material. The method specifically comprises the following steps: 1) firstly weaving PLGA fiber cylinder materials with different diameter gradients; 2) mineralizing hydroxyapatite on the surface of graphene oxide by using an in-situ mineralization process to obtain a GO / HA nano filler, preparing an alkali-soluble chitosan / cellulose mixed solution compounded with GO / HA by using a freezing-blasting method, and performing low-speed centrifugal defoaming; (3) concentrically sleeving and fixing a fiber cylinder in an open cylinder mold, pouring the solution in a wall-attached manner, and transferring the fiber cylinder and the mold to a temperature of 60-80 DEG C for in-situ gelation; and 4) after dialysis, transferring into a rotary drying device for drying and dewatering, and turning according to a drawing to obtain the required high-strength nano composite screw material. According to the screw material, the GO / HA filler with high dispersity is compounded, the concentric fiber cylinder structure is enhanced, meanwhile, HA can promote osteogenesis, and the requirements for screw strength and biological activity are met.

This invention relates to the field of animal model preparation technology, and discloses a method for preparing a mouse model of brain hemorrhage without thermal effects. The method includes preparing a microbubble contrast agent and healthy adult mice, pre-treating the mouse brain and marking target sites, anesthetizing the mice and fixing them on a stereotaxic apparatus, aligning a hydrogel cone mounted on an ultrasound transducer with the target sites in the mouse brain, intravenously injecting the microbubble contrast agent, and 20-40 minutes after the injection, activating the ultrasound transducer to perform ultrasound intervention on the target sites in the mouse brain. The cavitation effect of ultrasound induces focal brain hemorrhage, establishing a mouse model of brain hemorrhage. This invention, by applying the hydrogel cone to the target sites in the mouse, allows sufficient time for heat dissipation from the brain tissue during the ultrasound pulse intervals, making the temperature rise of the target tissue negligible throughout the irradiation process. This effectively reduces thermal damage, leading to more accurate interpretation of experimental data and more reliable research conclusions.