2947results about "Drying solid materials without heat" patented technology

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention discloses a wafer bonding method, which comprises the following steps of: 1, providing a first wafer and a second wafer, the surface of the first wafer being provided with a microstructure with a high aspect ratio; step 2, cleaning the first wafer and the second wafer; step 3, performing vacuum drying treatment on the first wafer and the second wafer, wherein the vacuum pressure is controlled to be 0.1-10 Torr in the vacuum drying treatment process; step 4, carrying out pre-bonding on the first wafer and the second wafer to form a bonding body; and step 5, carrying out annealing treatment on the bonding body. Aiming at the problem of residual water in the pre-cleaning process in the bonding process of the micro-structure wafer with a high aspect ratio, the wafer is placed in a controllable vacuum environment, phase change boiling of liquid water under the condition of no heat input is realized, and the problem of high-temperature heat damage caused by an existing heating and baking method is effectively avoided.

The invention belongs to the technical field of Tibetan medicinal material processing, and particularly relates to a Tibetan medicinal material vacuum freeze-drying process which comprises the following steps: feeding a loading tray into a freeze-drying bin, and cooling at a speed of 1-2 DEG C / min; when the center temperature of the material reaches-35 DEG C, maintaining for 2-4 hours; a vacuum system is started, and the pressure in the bin is reduced to 10-30 Pa; the initial temperature of the heating plate is set to be-10 DEG C to 10 DEG C; real-time monitoring is carried out through an array type sensor network; vacuum breaking operation; through accurate perception, intelligent diagnosis, robust decision making and self-adaptive regulation and control, the quality problems of collapse, coking, active ingredient degradation and the like of the medicinal materials in the drying process can be effectively prevented, and high quality and high uniformity of a final product are ensured. Meanwhile, by optimizing a drying path, unnecessary energy consumption and time waste are avoided, the economic benefit of the whole production process is improved, and the method is particularly suitable for modern processing of precious Tibetan medicinal materials with extremely high quality requirements.

The invention relates to the technical field of food processing, in particular to a drying device for marinated egg packaging treatment and a using method thereof.The drying device comprises a conveying mechanism, and a drying mechanism is arranged on the front side of the conveying mechanism. Reciprocating linear motion of the storage frame is matched with the synthetic fiber cloth belt, intermittent discharging and stable conveying of marinated eggs are achieved, direct collision and damage during drying are avoided, the synthetic fiber cloth belt is porous, large in specific surface area and capable of adsorbing moisture on the surfaces of the marinated eggs and reducing humidity, the drying air outlet plate reciprocates, hot air evenly covers the marinated eggs, and drying efficiency is improved. A traditional device is low in drying efficiency and long in drying time due to design limitation of discharging and a conveying belt, the device shortens the drying period and improves the production efficiency through continuous movement of a cloth belt and reciprocating hot air drying of an air outlet plate, and the risk of cross contamination is reduced through the design that the cloth belt adsorbs moisture and is easy to clean.

Methods and apparatuses for drying electronic devices are disclosed. An exemplary method comprises: initiating a drying operation in a drying apparatus comprising: generating a first air flow through a first air channel, routing, a moisture from an electronic device to a moisture-absorbing apparatus, absorbing, using the moisture-absorbing apparatus, the moisture from the electronic device, determining a first humidity and a second humidity, executing, based on the first humidity and the second humidity, a first computing operation, exhausting the first air flow to an exterior of the drying apparatus, determining a third humidity, and executing, based on the third humidity, a second computing operation.

The present invention includes a spray drying disposable device for use in a spray drying system. The disposable has a spray drying head and a plasma drying chamber. The head has a spray dry nozzle assembly in fluid communication with the plasma source and the pressurized aerosol gas source. The pressurized gas flows in a vortex pattern that atomizes plasma droplets in the chamber. The head also includes a plenum has uniform air pressure of the drying gas. A baffle plate forms the floor of the plenum having drying gas jets that supply drying gas to the chamber. The atomized plasma droplets evaporate in the presence of the drying gas emitted from the jets to obtain dried plasma particles and humid air. A capture filter captures the dried plasma particles and allows the humid air to pass. The humid air passes through the gas outlet and the exhaust port.

The invention discloses a low-temperature vacuum microwave freeze-dried sinomenine hydrochloride preparation and a preparation method thereof in the technical field of pharmaceutical preparations, and solves the problems of long drying time, high energy consumption and poor product stability in the traditional freeze-drying technology. A vacuum microwave collaborative freeze-drying technology is adopted, microwave internal heating is achieved through a 2.45 GHz magnetron microwave generator and a rectangular waveguide tube under the conditions that the vacuum degree is 20-30 Pa and the plate layer temperature ranges from-40 DEG C to-35 DEG C, the microwave power density in the primary drying stage ranges from 0.3 W / g to 0.5 W / g, the microwave power density in the secondary drying stage ranges from 0.1 W / g to 0.3 W / g, and collaborative control over the microwave power, the vacuum degree, the temperature and the time is achieved in cooperation with a quaternary coupling precise control system. The preparation contains 50 mg of sinomenine hydrochloride, 100 mg of mannitol and 10 mg of sodium carboxymethyl cellulose grafted modified polyvinylpyrrolidone, the residual moisture is controlled to be 0.4-0.6%, the activity retention rate is 94-96%, and the drying time is shortened to 12-16 hours.

The invention discloses an energy-saving efficient swimming pool heat pump dehumidifier and a using method thereof.The energy-saving efficient swimming pool heat pump dehumidifier comprises an outer box of a square structure, a control panel is arranged on the front side of the outer box, an air inlet and an air outlet are formed in the upper surface of the outer box, and a longitudinally-arranged mounting plate is fixedly mounted in the outer box; an inclined axial flow fan is fixedly mounted on the left side of the mounting plate, and condensation fins arranged at equal intervals are fixedly mounted in the mounting plate. According to the energy-saving and efficient swimming pool heat pump dehumidifier and the using method thereof, a novel structural design is adopted, air is cooled to be below the dew point through condensation fins and condensation pipes, water is condensed into water drops, and the dehumidification purpose is achieved; and a pushing block at the bottom end of a connecting rod pushes a flow equalizing plate to rotate downwards, then the flow equalizing plate is reset under the elastic pulling effect of a reset spring, reciprocating rotation of the flow equalizing plate is achieved, and air flow evenly covers condensation fins and condensation plates.

The invention relates to the technical field of freeze-drying control, and discloses an automatic control method and system for freeze-drying, rotating and pre-freezing. According to the method, a freeze-drying process dynamic model is constructed by monitoring operation parameters in a rotary pre-freezing stage, and characteristic indexes of the freeze-drying process dynamic model are analyzed; comparing the index with a standard reference value to generate a deviation analysis result, mining abnormal signals, screening key control points, monitoring environmental parameters in real time, and calculating response coefficients of the environmental parameters influencing the key control points; evaluating a potential fault mode based on the response coefficient, positioning a fragile link in the process, and carrying out performance detection to find out a specific problem point; formulating a control planning target according to the problem point, analyzing a corresponding control mode, querying a standard of the control mode, and generating a control operation instruction according to the standard; after the instruction is applied to equipment execution control, freeze-dried product quality data is collected for consistency verification, and finally a process quality report is generated. According to the method, multi-dimensional monitoring, fault early warning and accurate regulation and control of the freeze-drying, rotating and pre-freezing process are achieved.

The utility model discloses a water residue and water quenching prevention system for polycrystalline silicon broken material packaging, and particularly relates to the technical field of polycrystalline silicon processing, the system comprises an integrated control unit, a water quenching module, a water residue and water treatment module, a packaging module, a crushing module, a screening module, a drying module, a quality detection module and an environmental adaptability module. According to the water quenching system for preventing moisture residue in the polycrystalline silicon broken material packaging, the utilization rate of materials is improved through efficient crushing and accurate screening, the waterproof performance of products is enhanced through vacuum degassing and automatic humidity control, the consistency of product quality is ensured through automatic quality detection, and the production efficiency is improved. And the safety of the system is improved through integrated control and an emergency discharge device. The characteristics jointly improve the production efficiency, and ensure the stability and reliability of the product in a changeable environment.

The invention relates to a composite powder explosion suppressant for suppressing aluminum hydride explosion and a preparation method of the composite powder explosion suppressant, belongs to the technical field of explosion suppressants, and solves the problems of single action mechanism, high required explosion suppression concentration, low efficiency and the like of a traditional explosion suppressant. According to the solution, the composite powder explosion suppressant for suppressing aluminum hydride explosion is prepared through raw material pretreatment, powder mixing and drying in sequence, and the composite powder explosion suppressant is prepared from the following components in parts by mass: 10.2 to 30.2 parts of melamine cyanurate, 20.4 to 40.6 parts of monopotassium phosphate, 15.2 to 25.2 parts of potassium bicarbonate, 8.4 to 13.2 parts of aluminum hydroxide, 6.8 to 11.1 parts of zinc borate, 5.0 to 9.0 parts of fumed silica and 2.0 to 5.3 parts of calcium silicate. The explosion suppressant can act on different combustion areas and combustion stages in the aluminum hydride explosion process, the physical and chemical explosion suppression effects of all the components of the explosion suppressant are fully exerted, and meanwhile, efficient explosion suppression of aluminum hydride explosion can be achieved through the synergistic effect of all the components.

The utility model discloses a shell cleaning mechanism for lead-acid battery production in the technical field of cleaning equipment, which comprises a box body, a box door is hinged on the box body, an assembly frame is arranged in the box body, the assembly frame is connected with the box body through a vibration assembly, a clamping assembly is arranged on the assembly frame, and the clamping assembly is connected with the box door through a clamping rod. A washing assembly is arranged in the box body, and a drying assembly is arranged at the top of the box body. Through the arrangement of the assembly frame and the vibration assembly, after a lead-acid battery shell is washed, a worker can start a driving motor in the vibration assembly, so that a cam can rotate, the outer surface of the cam extrudes the assembly frame, and meanwhile, under the cooperation of the elastic force effect of a spring, the assembly frame is driven to rotate. When the lead-acid battery shell is clamped and fixed, the assembling frame drives the clamped and fixed lead-acid battery shell to vibrate up and down in a reciprocating manner, so that water drops adhered to the shell can be shaken off, and the subsequent drying efficiency can be improved.

The invention belongs to the field of food drying processing, and particularly relates to a high-quality food drying device and method based on low temperature and negative pressure, a high-temperature heat pump system is used for providing heat in the drying process, supplementing heat taken away by water loss and maintaining the temperature of goods in a proper range. And the water catching system is used for condensing and intensively discharging water vapor generated by drying. And the negative pressure drying system is used for placing dried goods and providing a negative pressure environment to accelerate the drying speed. The pressure in the drying box is reduced to below the saturated vapor pressure corresponding to the moisture contained in the goods through the vacuum pump, heat is generated through the high-temperature heat pump system and conveyed to the flat plate radiation heat exchangers of the negative-pressure drying system to maintain the goods at the set temperature, and finally low-temperature rapid cooling of the goods is achieved. The low pressure is utilized to reduce the gasification temperature of water contained in food, and low-temperature heating is matched to quickly dry the food at low temperature, so that low-loss food nutrition drying is realized.

A lyophilization container includes a first section having a first layer, a second layer aligned with the first layer, and a cavity defined by the alignment of the first and second layers, where at least one of the first and second layers is preformed to have a three-dimensional shape. A lyophilization fixture includes a base member and a lid member. The lid member is movable between a first position and a second position relative to the base member. The base member and lid member together define a housing that receives at least a portion of a lyophilization container.

The utility model relates to an inner flow channel cleaning device of a liquid cooling product, which sequentially comprises a flow resistance measuring process, a dynamic cleaning process and a drying process, and comprises the following steps of: clamping the liquid cooling product on a turnover or rotatable jig; hot water is introduced into the liquid-cooled product, and an inner flow channel of the liquid-cooled product is cleaned while the liquid-cooled product rotates; and vacuumizing the inner flow channel of the cleaned liquid cooling product, and drying the inner flow channel by utilizing the low boiling point characteristic and residual temperature of vacuum water. According to the utility model, dynamic cleaning of the inner flow channel can be realized, and the liquid cooling product is overturned in the cleaning process, so that laminar flow formed in the inner flow channel of the liquid cooling product is disrupted, vortexes formed at corners are vibrated and dispersed, impurities such as chippings and the like are effectively taken away, each part of the inner flow channel of the liquid cooling product is cleaned as much as possible, and the cleaning efficiency is improved. And high-cleanliness cleaning of the flow channel in the liquid cooling product is realized.

The invention discloses a freezing tank, and belongs to the field of freeze drying equipment. The technical problems that equipment in an existing freeze dryer is short in service life, low in vacuumizing efficiency, high in maintenance cost, limited in operation time and the like are mainly solved. According to the technical scheme, a freezing tank comprises a first freezing tank body, a second freezing tank body, a third freezing tank body, a freezing pipe and a supporting piece, the first freezing tank body is arranged in the second freezing tank body, and the freezing pipe is arranged on the periphery of the first freezing tank body in a surrounding mode; the first freezing tank is connected with the second freezing tank through the freezing pipe, the second freezing tank is arranged in the third freezing tank, and the second freezing tank is connected with the third freezing tank through the supporting piece. The vacuum freeze-drying device is mainly applied to the field of household vacuum freeze-drying equipment.

According to the technical scheme, the kitchen garbage dehydration device is characterized by comprising a shell, the top face of the shell is connected with a feeding box, a treatment groove is formed in the shell, and the interior of the treatment groove is connected with a treatment box; the feeding pipe is connected to the interior of the feeding box, and the other end of the feeding pipe is connected to the interior of the processing box; the dewatering assembly is arranged in the shell and used for dewatering kitchen garbage, the dewatering assembly comprises an air cylinder, the air cylinder is connected to the top face of the shell, a telescopic shaft of the air cylinder extends to the treatment box, one end of the telescopic shaft of the air cylinder is connected with an extrusion block, and a discharging opening is formed in one side of the treatment box. Garbage enters the treatment box through the feeding pipe, the air cylinder is started, the extrusion block is pushed through the telescopic shaft of the air cylinder, the garbage is extruded through the extrusion block, water in the garbage is discharged, and the purpose of garbage dehydration is achieved.

The utility model discloses a clean room airtight window which comprises a wall body, an inner hole is formed in the inner wall of the wall body, two symmetrically-distributed open holes are formed in the inner wall of the inner hole, the inner wall of the wall body is fixedly connected with a servo motor, the outer wall of the wall body is fixedly connected with a switch, the output end of the servo motor is fixedly connected with a rotary drum, and the output end of the rotary drum is fixedly connected with a motor. A placement groove is formed in the outer wall of the rotary drum, a sliding groove is formed in the outer wall of the placement groove, a cover plate is slidably connected to the inner wall of the sliding groove, and an inner groove is formed in the top end of the inner hole; the brush is used for sweeping dust on the surface of the rotary drum, the discharge holes are attached to the surface of the rotary drum, so that disinfectant can make contact with the surface of the rotary drum to disinfect the surface of the rotary drum, meanwhile, the ultraviolet lamp is used for further disinfecting the surface of the rotary drum, and the sponge is used for absorbing the disinfectant on the surface of the rotary drum to keep the surface of the rotary drum dry. The disinfection and dust removal effects are realized.

The invention discloses a humidity response type rock-soil body low-temperature internal circulation drying device and a control method, and belongs to the technical field of geotechnical engineering experiment equipment. The problems that traditional rock-soil body drying equipment is extensive in humidity control, high in energy consumption, inconvenient to maintain and obvious in temperature difference are solved, and accurate, energy-saving and efficient drying treatment of water-containing rock-soil samples is achieved. According to the invention, a plurality of groups of regulation and control modules are independently arranged, and differential humidity control of rock and soil samples with different water contents is realized through a high-precision humidity sensor and a speed-adjustable dehumidification fan; a closed-loop internal circulation design is adopted, and a heat recovery device is combined, so that introduction of external air is reduced, and energy consumption is reduced; a modular detachable structure is designed, so that parts such as a dehumidification module can be conveniently and quickly replaced, and the maintenance convenience is improved; a multi-heat-source auxiliary system is additionally arranged to eliminate heat dead angles in the box; the device is mainly used for efficient, accurate and environment-friendly drying treatment of rock and soil samples in geotechnical engineering experiments, the drying uniformity can be remarkably improved, the energy consumption and the maintenance cost are reduced, and the device has high applicability and practical value.

A lyophilization container includes a first section having a first layer, a second layer aligned with the first layer, and a cavity defined by the alignment of the first and second layers, where at least one of the first and second layers is preformed to have a three-dimensional shape. A lyophilization fixture includes a base member and a lid member. The lid member is movable between a first position and a second position relative to the base member. The base member and lid member together define a housing that receives at least a portion of a lyophilization container.

This invention relates to a carbonized loofah photothermal evaporator with a wall-like structure and its preparation method, relating to the field of solar-driven interfacial water evaporation. The invention utilizes freeze-drying technology to dry fresh loofah, obtaining a freeze-dried loofah that retains its porous structure; then, it carbonizes the freeze-dried loofah in a tubular furnace under an inert gas environment. The carbonized loofah retains the anisotropic structure of the inner and outer layers of the fresh loofah. The outer layer, with its dense structure resembling a wall, maintains its shape and provides structural protection. The inner layer, with its loose and porous structure, acts as a channel for directional water transport, facilitating efficient water evaporation. The resulting integrated carbonized loofah photothermal evaporator exhibits excellent water transport rate and good photothermal conversion capability, making it applicable to interfacial water evaporation. This evaporator uses readily available raw materials, has a simple manufacturing process, high photothermal evaporation efficiency, and is environmentally friendly, showing promising applications in seawater desalination.

Methods and apparatuses for drying electronic devices are disclosed. An exemplary method comprises: initiating a drying operation in a drying apparatus comprising: generating a first air flow through a first air channel, routing, a moisture from an electronic device to a moisture-absorbing apparatus, absorbing, using the moisture-absorbing apparatus, the moisture from the electronic device, determining a first humidity and a second humidity, executing, based on the first humidity and the second humidity, a first computing operation, exhausting the first air flow to an exterior of the drying apparatus, determining a third humidity, and executing, based on the third humidity, a second computing operation.

The multifunctional partitioned temperature control medical storage cabinet comprises a multifunctional medical temperature control cabinet, and a drying mechanism and a heat dissipation auxiliary mechanism are arranged in the multifunctional medical temperature control cabinet; according to the multifunctional partitioned temperature control medical storage cabinet, by arranging the drying mechanism, the heat dissipation auxiliary mechanism and the cleaning mechanism, the multiple improvement effect on the environment in the cabinet is achieved, firstly, a motor drives a lead screw to drive a support to move, a cleaning wiping plate can be periodically attached to the back face of the partitioned storage cabinet, condensate water formed due to temperature difference is cleaned and scraped, and the cleaning effect is improved; according to the drying device, local moisture accumulation caused by long-term adhesion of water drops is avoided, the mildew risk is reduced from the source, meanwhile, condensate water is extruded to flow into the water storage tank and is discharged through the drainage pipe, the internal humidity control capacity is further improved, and then the drying box is heated by the heating plate, so that drying agent particles continuously keep active; and the transmission plate drives the transmission ring and the transmission blades to rotate to stir the drying agent particles, so that moisture absorption is more uniform and efficient.

The utility model relates to the technical field of freeze-drying, in particular to a disposable container suitable for a freeze-drying process. The disposable container suitable for a freeze-drying process comprises: a flexible container; the flexible container is of a bag body structure with a bacterium blocking and shielding function; the flexible container is provided with a frame structure to form a liquid loading area for maintaining the geometrical shape of feed liquid; the flexible container is provided with a first transmission interface for transmitting liquid into the flexible container and keeping the liquid sterile; the flexible container has a second delivery interface that delivers the powder to the outside thereof and remains sterile. As a pre-sterilized totally-closed container applied to a tray freeze-drying process, each process link of tray freeze-drying can be kept sterile without the protection of a hundred-level environment. The product provided by the utility model can be sterilized in advance and can be used after being disassembled, the state confirmation of the isolator and the online cleaning and the online sterilization of equipment in the traditional production process are not needed any more, and the production efficiency is improved.

The invention relates to the technical field of intelligent control, in particular to an intelligent control system for a freeze-drying process based on an intelligent algorithm, which comprises an acquisition module, a freezing adjustment module, a primary adjustment module and a secondary adjustment module. According to the method, the corrected plate layer temperature after incomplete freezing is accurately recognized according to double criteria of the freezing center temperature and the temperature drop trend, and after the drying efficiency deviation degree is calculated and the abnormal type is determined by utilizing the preset efficiency interval, the related preset process conditions are adjusted; meanwhile, stagnation and overheating runaway are independently diagnosed and analyzed on the basis of time sequence correlation of the water content decreasing rate and the center temperature increasing rate, the preorder freezing defect is traced when secondary drying is normal but overtime does not reach the standard, and the slab layer temperature is reduced in an equal proportion according to the freezing defect degree; the problem that the process efficiency and the product quality stability are difficult to consider at the same time due to dependence on artificial experience, stage splitting and lack of dynamic feedback is effectively solved.

The utility model discloses a vacuumizing device and a polycrystalline silicon coral material water-quenching crushing system, relates to the technical field of polycrystalline silicon production, and mainly aims to remove water residues in a water-quenched polycrystalline silicon coral material and ensure the quality of a polycrystalline silicon packaged finished product. According to the main technical scheme, the vacuumizing device comprises a supporting frame and a lifting mechanism; a closed cavity is installed on the upper portion of the supporting frame, the upper end of the closed cavity is connected to a vacuum pump, an opening is formed in the lower end of the closed cavity, and the supporting frame below the closed cavity is fixedly connected to a bearing platform. The lifting mechanism comprises a driving gear, a rack and a sealing plate, the driving gear is rotationally connected to the bearing platform, the rack is slidably connected to the bearing platform through a guide rail, the driving gear is meshed with the rack, the upper end of the rack is fixedly connected to the sealing plate, the upper surface of the sealing plate is fixedly connected to the limiting groove and used for containing coral charge bars, and the sealing plate is matched with the opening.

The invention discloses an optical lens online appearance flaw detection device, and relates to the technical field of lens appearance detection, the optical lens online appearance flaw detection device comprises a workbench, the workbench is provided with a cleaning module and a detection module, the cleaning module is used for cleaning the surface of a lens, and the detection module is used for carrying out appearance detection on the cleaned lens; the cleaning module comprises a clamping assembly, a wetting assembly and a wiping assembly, and the clamping assembly is used for clamping and driving a lens to rotate along the axis of the lens during cleaning; the wetting assembly and the wiping assembly are correspondingly located above the clamping assembly, the wetting assembly is used for wetting the circumferential outer wall of the lens through cleaning liquid, and the wiping assembly is used for conducting pressurized wiping on the circumferential outer wall of the lens. The method has the effect of improving the accuracy of the appearance detection result of the optical lens.

According to embodiments, a modified freeze-drying apparatus and methods of use are provided herein for providing variable power heating for precise control of material temperatures during freeze-drying. The apparatus may provide a vacuum pump and variable current heater trays for receiving the material, freezing the material, creating a vacuum, progressively increasing the heater tray temperature without causing temperature cycling, deactivating the tray heater, repressurizing the apparatus, and removing the freeze-dried material.

A substrate processing apparatus configured to dry a substrate with a processing fluid in a supercritical state includes: a processing vessel; a substrate holder configured to hold the substrate horizontally within the processing vessel; a first supply line connected to a first fluid supply provided at the processing vessel and configured to supply the processing fluid into the processing vessel; a drain line connected to a drain unit provided at the processing vessel and configured to drain the processing fluid from the processing vessel; a bypass line branched off from the first supply line and connected to the drain line, the bypass line being configured to allow at least a part of the processing fluid flowing in the first supply line to be drained into the drain line without passing through the processing vessel; and a bypass opening / closing valve configured to open or close the bypass line.

The invention discloses a method for preparing a high-activity freeze-dried facial mask in a sectional manner. The method comprises the following steps: preparing a basic feed liquid; a membrane cloth infiltration step; a pre-drying step: carrying out primary drying on the membrane cloth soaked with the basic material liquid by adopting drying equipment; preparing active matter components; an active matter component feeding step: spraying an active matter component on the outer surface of the pre-dried film cloth by adopting spraying equipment; and a freeze-drying step: putting the pre-dried membrane cloth sprayed with the active matter components into a freeze dryer for freezing. According to the method for preparing the high-activity freeze-dried mask in the sectional mode, the active matter components are independently added to the surface of the mask cloth soaked with the mask basic material liquid, and the vacuum freezing and drying combined technology is introduced, so that it can be guaranteed that the active matter components are prevented from being subjected to high-temperature and high-moisture decomposition conditions, and the stability and the active effect of the active matter components are guaranteed; and moreover, the production flexibility is higher, the same production line can be quickly switched to produce different freeze-dried mask products, the production efficiency is higher, and the energy consumption is obviously reduced.