57results about How to "Ensure usability" patented technology

An alcohol-soluble preprinting ink on gravure carton is composed of 6-10% nitrocellulose, methacrylate ester7-13%, propylene glycol methylether acetate 4-12%, dioctyl phthalate 2-6%, the dyestuff 15-25%, acetic ester 12-23%,absolute ethyl alcohol 32-43%. The ink has good glossiness, colour saturation degree and recurrence of halftone dot. It can defend the fake and resist to 180deg.C.

The invention discloses an outdoor unit of an air conditioner. The outdoor unit of the air conditioner comprises a compressor, an outdoor heat exchanger, a low-pressure tank and a controller, and further comprises a refrigerant filling pipeline, wherein one end of the refrigerant filling pipeline is connected with an inlet of the low-pressure tank, and the other end is used for connecting with a refrigerant storage tank; a filling switch is arranged on the refrigerant filling pipeline; and the controller controls the opening of the filling switch under the refrigerating operation of the compressor, and controls the closing of the filling switch when determining sufficient refrigerant of a refrigerant circulating system of the air conditioner. The invention further discloses a refrigerant filling control method of the air conditioner. The outdoor unit of the air conditioner and the refrigerant filling control method of the air conditioner enable the adding quantity of refrigerant to be accurate in the installation completion or the maintenance of the air conditioner, and guarantee the reliability and the use effect of the air conditioner.

The invention relates to a generating method for secret keys with user information. The generating method is characterized in that according to copyright protection of a digitalized product, each encryption key of digitalized product documents is jointly composed of a random information part and a user information port, and a server encrypts the digitalized product documents purchased by different users with the different secret keys so as to bind the user information with the digitalized product documents, so that only the legitimate users can own and use the secrete keys. The generating method comprises the following steps of (1) secret key requesting, (2) secret key generating, (3) secret key distributing, (4) secret key using, (5) counterfeiting prevention and source tracing.

The invention discloses an energy-saving device and an energy-saving method for producing hard carbon black. The energy-saving device for producing the hard carbon black are characterized by comprising a hard carbon black reaction furnace (7), a high-temperature air preheater (13) of a first smoke outlet (10), a tail gas preheater of a second smoke inlet (21) and a second smoke outlet (22), a raw oil preheater of a third smoke inlet (14) and a third smoke outlet (15), a low-temperature air preheater (25) and a low-pressure fan (35) sequentially, wherein the low-temperature air preheater (25) and the low-pressure fan (35) are communicated with a tail gas outlet (19) of a bag filtering box; the low-temperature air preheater is communicated with a condenser (26); the condenser is communicated with a gas-water separator (27); and a flow valve is communicated with a recovery tail gas inlet (23) of the tail gas preheater. A tail gas flow distributing valve (37) is arranged between the tail gas outlet (19) and the low-temperature air preheater (25); the low-pressure fan (35) is arranged between the low-temperature air preheater and the condenser; an oxygen-enriched mixer (36) and an oxygenator (31) are arranged between a high-temperature air outlet (8) of the high-temperature air preheater and a high-temperature oxygen-enriched air inlet (4); and the oxygen-enriched mixer is connected with the oxygenator.

The invention relates to the technical field of ink, in particular to preprinted ink for a high-temperature resistant carton. The preprinted ink comprises the following components in percentage by weight: 10 to 30 percent of protein resin, 10 to 40 percent of acrylic resin solution, 2 to 10 percent of assistant, 30 to 60 percent of acrylic color paste and water. The preprinted ink has the advantages of stable performance, good lustrousness, simple preparation, low cost, environment friendliness, innocuity, and contribution to safe protection and environmental protection; the preprinted ink has the most important characteristic of using the protein resin to improve the high-temperature resistance by a higher level compared with other water-based preprinted high-temperature resistant ink, such as ink using acrylic resin.

The invention discloses a self-adaptive multidirectional dislocation method and a self-adaptive multidirectional dislocation device for a retractable device. According to the technical scheme, comb plate dislocation and elastic damping dislocation are combined; an elastic damping dislocation device is arranged at the root of a movable steel comb plate of a comb plate dislocation device, comprises at least one spring component or elastic component made of polyurethane polymer composites, and is in point contact with the movable steel comb plate. By the self-adaptive multidirectional dislocation method and the self-adaptive multidirectional dislocation device, the problems that steel comb-tooth-shaped retractable devices are poor in adaptability to dislocation, tires are punctured by bolts, driving safety is affected, service life is not ideal and the like in the prior art are solved; the self-adaptive multidirectional dislocation device is simple in structure and low in production cost.

The invention discloses a method and device for applying methane to an industrial hating furnace. The device comprises a methane tank (4) and a heating chamber (3), wherein the methane tank is communicated with a bucket (2); the methane tank is connected with a methane storeroom (16) through a delivery pipe (9); the methane storeroom is connected with a flame gun (12) positioned in the industrial heating furnace through an output pipe (15); the output pipe is connected with an air compression pipe (13); and the heating chamber is connected with a hot air discharging pipe (25) in the industrial heating furnace through a hot air pipe (10). By utilizing the device, a fermentation material is filled in the methane tank firstly, the methane tank is heated to 50-80 DEG C so that the fermentation material is fermented and decomposed at high temperature to generate methane, then the methane is stored and delivered to the industrial heating furnace so as to be ignited, and then compressed air is introduced to the methane so that the methane sufficiently combusts in the industrial heating furnace after being mixed with the compressed air. By utilizing the method and device provided by the invention, the quality of the combusted product can be ensured, the gas cost can be greatly reduced, energy sources are saved, waste materials are sufficiently utilized, and the environmental pollution is reduced.

The invention discloses a capsule endoscope. PCB stratified structures are located in a closed inner cavity defined by a shell and an optical front cover, magnets and batteries are arranged in internal spaces formed by the PCB stratified structures, avoiding planes are arranged on the circumferential surfaces of the magnets, containing spaces are formed between the avoiding planes and the inner wall of the shell, and the sections, corresponding to the side edges of the magnets, of FPC flexible flat cables are located in the containing spaces. Multiple convex ribs are arranged at the same height of the inner wall of the shell in the circumferential direction, a layer of PCBs on the lowest portion are supported by the convex ribs jointly, and one layer of PCBs on the upper portion are pressed by a step surface on the inner wall of the optical front cover. The avoiding planes are arranged on the surfaces of the magnets, the FPC flexible flat cables are prevented from being extruded by theinner wall of the shell, the FPC flexible flat cables are effectively prevented from cracking or being fractured, and the use performance and the service life of the capsule endoscope are guaranteed.The PCB stratified structure achieves positioning through the cooperation of the convex ribs and the step surface, the structure is simpler, and the reliability is high.

The invention discloses a grating magnetic separation type sewage treatment apparatus. The apparatus comprises a magnetic separation cabinet, the middle portion of the magnetic separation cabinet is provided with a grating magnetic separation purifier, two sides of the magnetic separation cabinet are respectively provided with a water inlet and a water outlet, two sides of the grating magnetic separation purifier in the magnetic separation cabinet are respectively provided with a first perforated wall and a second perforated wall, an inlet water pool is formed between the first perforated wall and the water inlet of the magnetic separation cabinet, a purifying pool is formed between the first perforated wall and the second perforated wall, an outlet water pool is formed between the second perforated wall and the water outlet of the magnetic separation cabinet, and the inlet water pool, the purifying pool and the outlet water pool are sequentially communicated. The apparatus has the advantages of simple structure and convenient manufacturing, allows the speed of water flow in the grating magnetic separation purifier to be stably controlled through using the first perforated wall and the second perforated wall and cooperating with the purifying pool formed by the grating magnetic separation purifier, allows water to be effectively and comprehensively cleaned through the grating magnetic separation purifier, and ensures adaption to large sewage throughout.

The invention provides a data processing method, device and system and a computer readable storage medium, and the method comprises the steps that a server decomposes an original key associated with aclient ID, generates first key information and second key information, stores the first key information and the second key information, and the first key information subjected to the confusion processing of the client ID is sent to the client; after receiving the data processing request, the server processes the to-be-processed data according to second secret key information associated with the client ID, generates first data and sends the first data to the client; the client performs demixing processing on the first secret key information subjected to the mixing processing to generate firstsecret key information, to-be-processed data are processed according to the first secret key information, second data are generated, the first data and the second data are combined, target data are generated, and the data obtained after encryption or decryption processing is conducted on the to-be-processed data through an original secret key are the same as the target data.

The invention discloses a Wi-Fi configuring method and device based on a wireless hotspot. The method comprises the following steps of: acquiring hotspot information corresponding to a hotspot currently accessed by a terminal; acquiring current country code information in the hotspot information; and configuring a Wi-Fi parameter of the terminal according to the acquired current country code information. The invention also provides a Wi-Fi configuring device based on the wireless hotspot. Through adoption of the method and the device, when a user roams in different countries while carrying the terminal, a correct Wi-Fi parameter of a country in which the user is positioned is acquired automatically, and the Wi-Fi parameter of the terminal is configured according to the correct Wi-Fi parameter of the country in which the user is positioned, so that a use requirement of the user is met, and safe and normal use of the terminal is ensured.

The invention provides a refrigerator door closer and a refrigerator. The refrigerator door closer includes a hinge base connected between a refrigerator door body and the bottom surface of a refrigerator body, the hinge base successively includes a hinge pivotal area supporting part of the refrigerator door body, a base connecting part, a fixing mounting part of the refrigerator door body in thelength direction, a pin shaft pivoted with the refrigerator door body is arranged at one end of the hinge pivotal area supporting part of the refrigerator door body in the width direction, a guiding limiting part in a bulge state is arranged at the other end of the hinge pivotal area supporting part of the refrigerator door body, the guiding limiting part includes a limiting point located at the highest height of a central bulge, the bottom surface of the refrigerator door body is also provided with a lockset opposite to the guiding limiting part, the lockset includes a lock tongue which can slide along the guiding limiting part, and the guiding limiting part is between the limiting point and the base connecting part to limit continue extending of the lock tongue; and the refrigerator includes the refrigerator door body mounted on the refrigerator door closer and the refrigerator body. According to the refrigerator door closer and the refrigerator, the refrigerator door can be closed and opened smoothly, and stability of a side door seal hinged to the refrigerator door body and refrigerator body is not affected.

The invention relates to an automatic control system and method for the liquid level of a flotation machine used for beneficiation, particularly to an automatic control system for controlling, optimizing and upgrading the liquid level of the flotation machine in a flotation process of the beneficiation industry. The automatic control system and method of the invention overcome the problems that aliquid level cannot be accurately judged, liquid level adjustment lags behind, a floating ball stroke route is prone to blockage in the process of automatic controlling of the liquid level of the flotation machine, and liquid level meter measurement is greatly affected by environment in the process of manual controlling of the liquid level of the flotation machine. According to a technical schemein the invention, a flotation machine liquid level detection device which is originally designed is used for accurately measuring the liquid level of the flotation machine; an electric actuating device with a special structure is applied to timely, efficiently and accurately adjust the opening degree of a conical valve, so the liquid level of the flotation machine is effectively adjusted; the whole automatic control system for the liquid level of the flotation machine realizes automatic control of the whole process through the Siemens LOGO! logic module, can realize switching between automaticcontrol and manual control, and can perform fault alarm; and the whole system is safe and reliable and is convenient to install and overhaul.

The invention discloses a capsule beverage brewing device which comprises a water supply device and a brewing mechanism. The water supply device and the brewing mechanism are arranged in a casing. The water supply device comprises a water storage container and a heat dissipation device. The water storage container comprises an accommodating cavity and a heating device. The heating device heats water in the accommodating cavity to a set temperature. The heat dissipation device comprises cooling fins and a cooling fan. The cooling fins are arranged around the accommodating cavity, heat energy of the accommodating cavity is conducted to the cooling fins, and the cooling fan drives air flow to pass across the cooling fins. When the temperature in the accommodating cavity is lowrered to the set temperature, the cooling fan stops working, and at the time the heating device works discontinuously. Through arrangement of the cooling device, the water for brewing a capsule can achieve the sterilization effect and is always maintained at an optimal temperature, and it is guaranteed that the hygiene requirements and brewing effect in the capsule brewing process are met.

The invention relates to a preparation process for carbon pottery. The preparation process for the carbon pottery for purifying air comprises the following steps in sequence: 1-, molding a body; 2-, firing; and 3-, soaking the molded body in a nano-titanium dioxide aqueous solution or spraying the nano-titanium dioxide aqueous solution onto the molded body. The preparation process for the carbon pottery for purifying air has the advantages that silver ions and nano-titanium dioxide are loaded on the prepared carbon pottery, and an adsorption function, a decomposition function and an antibacterial function are integrated.

The invention discloses a device for avoiding buried pipeline sedimentation in a room subsoil backfill region and a construction method. The device comprises a pipe hanger. The upper end of the pipe hanger is connected with anchoring components in a concrete ground beam or a reinforced concrete floor. The center of the bottom of the pipe hanger is connected with a U-shaped clamp. The construction method includes the steps of arranging the pipe hanger in a pipeline trench, arranging a pipeline at the bottom of the pipe hanger and fixing the pipeline through the U-shaped clamp, performing a hydraulic test or a closed water test, performing trench backfill, performing floor construction and the like. The device and the construction method have the beneficial effects that defects existing in the prior art are overcome, the stress carrier of the pipeline is changed fundamentally, the problems of pipeline blocking and breakage and the like caused by foundation settlement are eliminated completely, and the safety and normal use of the pipeline are guaranteed, so that construction quality is guaranteed, the economic loss is reduced, and good practicability is achieved.

Embodiments of the invention provide a power supply circuit and a panel, comprising: a power supply module for supplying power for a distribution point; a switch module respectively connected with the power supply module, a terminal device and the distribution point, for communicating the distribution point with the terminal device when the distribution point does not need power supply, and for communicating the power supply module with the distribution points when the distribution point needs power supply; a control module connected with the power supply module, for controlling the switch module based on the electric signal outputted by the power supply module to carry out circuit switchover; an isolation module, which is respectively connected with the power supply module and the switch module, prevents the external service from being output to the power supply module, and prevents the voltage provided by the power supply module from being output to the terminal device; and a service passing-back module, which is respectively connected with the isolation module and the terminal device, wherein, when the distribution point needs power supply, the external service is output to the terminal device. Embodiments of the invention further provides a power supply panel, which can make sure normal and safe use of other terminal devices in the circuit based on whether self-adapting swiching the power supply circuit for power supply for the distribution point.

The invention relates to a preparation method of a universal titanium dioxide water slurry. The method includes: adding an organic dispersing agent, an inorganic dispersing agent and water into an inorganic coated titanium dioxide filter cake, performing pulping and dispersing, and then carrying out sanding treatment to prepare a titanium dioxide dispersed water slurry; and adding cellulose into the dispersed water slurry, and conducting high speed dispersing to obtain the universal titanium dioxide water slurry. The method has the advantages of simple process and convenient operation. The mixed use of a cellulose thickening agent in cooperation with the inorganic dispersing agent and the organic dispersing agent can reduce layered settlement due to the adsorption and aggregation among particles in the titanium dioxide water slurry and formation of large particles finally, thus preventing the viscosity rise or serious layering of the water slurry from generating hard precipitates, andensuring the performance and normal use of the titanium dioxide water slurry. The method not only can reduce dust flying and material wasting for customers, and save the energy consumption for grinding and dispersion, but also can give full play to dispersity, covering power, high whiteness and other application performance of titanium dioxide, and the prepared universal titanium dioxide water slurry can be applied to paint, papermaking and other water-based fields.

The no-benzene pre-printing metal varnish consists of thermoplastic methyl methacylate resin 25-48 wt%, propylene glycol methyl ether acetate 4-12 wt%, dioctyl phthalate 2-6 wt%, and ethyl acetate 34-69 wt%. The no-benzene pre-printing metal varnish has methyl methacylate resin with excellent metallic pigment wetting performance and softening temperature not lower than the corrugated line compounding temperature as the main material and ester with less harm to the environment and human body as the main solvent, so that it has excellent metal adaptability, excellent brightness, environment friendship, capacity of resisting temperature up to 180 deg.c and other advantages.

The invention discloses a device for detecting the pressure of a sealed cover of a cell. The device comprises a transporting passage of the sealed cover; an outlet of the transporting passage is provided with a feeding slide block connected with a feeding cylinder; the lower part of the feeding slide block is provided with a detection mold cavity; one side of the detection mold cavity is provided with a feed pressing block and a feed pressing cylinder; the other side of the detection mold cavity is provided with an air inlet module; the lower part of the detection mold cavity is respectively provided with three passages, namely a low-pressure sealed cover passage, a normal sealed cover passage and a high-pressure sealed cover passage; and an outlet of an air outlet passage is provided with a pressure sensor which is respectively connected with a drive device of a low-pressure guide plate and a drive device of a high-pressure guide plate by an electric appliance control device. The device has the following advantages: the device has rapid and accurate detection, can ensure the production quality and safe use of the cell, reduce labor intensity of laborers, improve production efficiency and reduce production cost.

The invention discloses a water boiling device, which comprises a water tank, an electric heating element, ultrasonic generators, a high-water level probe, a low-water level probe, a temperature controller, a faucet, a water inlet, a drain outlet, an exhaust hole, a controller and a support, wherein the water tank has a hollow structure made of stainless steel or aluminum alloy and is arranged on the support; one ultrasonic generator is arranged on the wall of the water tank and extends into a water body, or a plurality of ultrasonic generators are distributed on the outer wall of the water tank; the ultrasonic generators transmit ultrasonic waves with the frequency of between 20 and 40kHz and the power of between 200 and 1,000W; and the electric heating element is fixed on the water tank. According to the water boiling device, energy generated by the ultrasonic generators is transferred to 12 water molecular groups, so that the water molecular groups are converted into small micro (small) water molecular groups; the water boiling device is descaled by utilizing the ultrasonic waves; and after the water boiling device runs for 15 days, a scaling layer on the boundary surface of the electric heating element is only 0.001 millimeters, and the middle part of the electric heating element is still kept smooth, so the aims of scale prevention and descaling are well fulfilled.

The invention relates to the technical field of ink, in particular to preprinted oil polish for a high-temperature resistant carton. The preprinted oil polish comprises the following components in percentage by weight: 50 to 80 percent of acrylic resin emulsion, 5 to 20 percent of alkaline solubility colloid, 0.1 to 1 percent of defoaming agent, 0.1 to 1 percent of levelling agent, 1 to 10 percent of wax, 1 to 10 percent of ethanol and water. The preprinted oil polish has good lustrousness, ensures the corrugated compounding and using performance, and improves the high-temperature resistance by a higher level compared with similar high-temperature resistant ink prepared by acrylic resin; and the preprinted oil polish can resist high temperature of 240 DEG C maximally, can meet the requirement of high-grade printing, and has the advantages of simple preparation, low cost, environment friendliness, innocuity, stable performance, light air pollution, no residue of toxic solvent, and contribution to safe production and environmental protection.

The invention relates to Ga-based liquid alloy with low-temperature fluidity, a preparation process and a thermometer, and aims to provide the Ga-based liquid alloy with the low-temperature fluidity and the preparation process for the Ga-based liquid alloy to reduce 'pre-solidification' temperature of the liquid alloy, improve low-temperature viscosity of the liquid alloy and guarantee normal use and storage of a liquid alloy device in a low-temperature environment. According to a scheme, the Ga-based liquid alloy with the low-temperature fluidity comprises the following components in percentage by weight: 60-80% of Ga, 9-22% of Im, 5-18% of Sn, 0.5-4% of Bi and 0.2-1.5% of Ag. The Ga-based liquid alloy is widely applied to aspects of mercury substitution in the field of medical appliances, key refrigerating media in the field of highly sophisticated refrigeration and the like.

The present invention relates to digital signage comprising a large display part for outputting visual information. The digital signature comprises: a display part extending in one direction and formed in a bar shape; a sensing part, which is positioned in a region adjacent to the display part and detects at least one group; and a control part for dividing the display part into a plurality of regions such that the regions of the display parts are assigned to each of the at least one group, and controlling the display part such that visual information related to the at least one group is outputted to the region adjacent to the at least one group among the plurality of regions, wherein the control part divides the display part such that the region adjacent to the at least one group has a width corresponding to the width of the space occupied by the at least one group.

The invention discloses a lower battery heat dissipation and distribution system and aims to overcome the defect that the use performance and service life of power batteries are affected due to complex heat dissipation structures of the power batteries of electric vehicles and poor heat dissipation and distribution effects. The system comprises a base and a plurality of battery modules mounted on the base, wherein each battery module comprises multiple vertical cell units; each cell unit comprises a cell, a support and a super heat conducting and transfer assembly, the super heat conducting and transfer assembly is mounted on the corresponding support, heat transfer parts extending out of the support are arranged on front and back sides, the cell is mounted on the support, and the right side surface of the cell is attached to the super heat conducting and transfer assembly; super heat conducting and transfer bodies are mounted on front and back sides of each battery module, the heat transfer parts on front and back sides of each super heat conducting and transfer assembly are attached to the super heat conducting and transfer bodies on front and back sides of the corresponding battery module, one end of each super heat conducting and transfer body is bent to form an L-shaped structure, one end, close to L shapes of the super heat conducting and transfer bodies, of the base is connected with a super heat conducting and collecting bar, and a heat exchange source connected with the super heat conducting and collecting bar is arranged on the base.

The invention discloses a Tesla valve water drain in the technical field of graphene, which comprises a water inlet, a water outlet, a Tesla valve, a water grid, a water injection port, an exhaust valve and an air hole, one end of the Tesla valve is communicated with the water inlet, the other end of the Tesla valve is communicated with the water grid, the water grid is communicated with the water outlet, the water injection port is arranged on the water grid, an air hole is formed in the end, communicated with the water inlet, of the Tesla valve and communicated with the exhaust valve. The invention further discloses the graphene water heating mattress containing the Tesla valve water drain. The graphene water heating mattress has the beneficial effects that the Tesla valve water drain has water adding, air exhausting and one-way non-return effects, uniform heat dissipation of the whole mattress is ensured through one-way flowing of the Tesla valve water drain, microcirculation of water is gradually achieved, and an unpowered water circulation system of the graphene water heating mattress is formed; according to the graphene water heating mattress, the potential safety hazard of local overheating of an electric heating mattress is thoroughly solved, and the effect is achieved through a special intelligent temperature control system.

The invention provides a leakproof sealant for a nickel-hydrogen battery. The leakproof sealant comprises the following ingredients (by weight): 15-20 parts of silicone rubber, 10-15 parts of olefin resin, 83-92 parts of a reactive diluent, 3-5 parts of an acidic regulator and 0.5-3.5 parts of an obstruction filler. The diameter of the obstruction filler is 1-10 microns. The invention also discloses a manufacturing method of the leakproof sealant for a nickel-hydrogen battery. By the manufacturing method, flowing property of the sealant can be remarkably reduced, the sealing performance of anelectrolyte is strong, and an alkaline electrolyte can be effectively prevented from leaking from the top of a battery. The sealant can effectively release a few of gases to balance internal and external air pressure. Then, stability of the sealant is strong, and the alkaline electrolyte will not leak from the top of the battery. Thus, normal service life and use performance of the battery are effectively ensured. As high and low temperature resistance of the sealant is also strong, stability of the sealant can be further ensured.

The invention relates to the technical field of refrigeration equipment, particularly to a luminous shelf assembly for a refrigerator and the refrigerator. The luminous shelf assembly for the refrigerator provided by the invention is arranged in a refrigeration chamber of the refrigerator, and comprises a luminous shelf and an electric connector electrically connected with the luminous shelf, wherein the luminous shelf is manufactured from an electroluminescent material; the whole surface of the luminous shelf can uniformly give out light after the luminous shelf is energized, edge bright bands are avoided, brightness of all corners in the refrigeration chamber of the refrigerator is uniform, and user experience is improved; besides, the luminous material can give out light through frequency control, heat is not generated, and the heat preservation effect and luminous effect of the refrigerator are guaranteed; the electric connector comprises a male end terminal and a female end terminal which are in fit socket connection; one of the male end terminal and the female end terminal is arranged on the luminous shelf, and the other of the male end terminal and the female end terminal isarranged on the refrigeration chamber of the refrigerator; and the luminous shelf is in socket connection with the female end terminal through the male end terminal, so that detachable connection with the refrigeration chamber is achieved, cleaning is convenient, and sanitary and utilization effects are guaranteed.

The invention discloses a preparation method of a high-strength waterproof corrugated board. The preparation method comprises the following steps: preparing an adhesive glue; applying the glue by a glue applicator to corrugated base paper through a fixing guide roller and a swinging guide roller to respectively obtain a first corrugated layer, a second corrugated layer and a third corrugated layer, respectively adhering the first corrugated layer, the second corrugated layer and the third corrugated layer to a first surface paper layer, a second surface paper layer and a third surface paper layer to form a first single-surface single-arc corrugated board, a second single-surface single-arc corrugated board and a third double-surface single-arc corrugated board, and adhering the third corrugated layer to the third surface paper layer and a fourth surface paper layer to form a third double-surface single-arc corrugated board; adhering the first single-surface single-arc corrugated board,the second single-surface single-arc corrugated board and the third double-surface single-arc corrugated board, conveying the first single-surface single-arc corrugated board, the second single-surface single-arc corrugated board and the third double-surface single-arc corrugated board into a vacuum curing channel for heating and curing; coating with a waterproof coating; and curing. The arrangement of the preparation method is reasonable, the preparation process is convenient, and the cost is moderate.