104results about How to "Diffusion fast" patented technology

The invention discloses a dry-type transformer. The dry-type transformer comprises a transformer body, a housing, a bottom plate and a fan, wherein the transformer body is formed by a plurality of groups of encapsulated windings in an array mode, a supporting rod is arranged at the bottom of the transformer body and allow the encapsulated windings in each group to connect with each other, the supporting rod is arranged in a crossed mode, and first threaded holes penetrate the supporting rod; the transformer body is integrally arranged in the cavity of the housing, and the bottom of the transformer body is fixedly positioned with the bottom plate, and meanwhile, the transformer body is arranged in the housing through the fan, the whole device achieves dispelling the heat in the transformerbody, and the graphite material of housing side is protruding simultaneously, and the heat from the housing is diffused quickly, and the protrusion of the array distribution can reduce the air great dust entering the inner wall of the housing through air vents.

The invention discloses a double-jet powder feeding device, which belongs to the technical field of water treatment, and comprises a gas-liquid separation buffer tank for performing gas-liquid separation on mixed slurry, and an exhaust port is formed in the gas-liquid separation buffer tank; the first jet mixing mechanism is used for preliminarily mixing powder and the first water flow; the water supply mechanism is used for mixing water; one end of the second mixing piece is connected with a water outlet of the gas-liquid separation buffer tank; the first jet mixing mechanism comprises a first mixing piece connected with the gas-liquid separation buffer tank at one end and a feeding assembly used for feeding powder to the first mixing piece, and the other end of the first mixing piece and the other end of the second mixing piece are both connected with a water outlet of the water supply mechanism; and the second mixing piece can be used for secondarily mixing the buffered and separated liquid-solid mixed liquid and the second water flow and pressurizing and throwing out the liquid-solid mixed liquid and the second water flow. The device has the effects of effectively solving gas interference, preventing blockage and reflux, and realizing stable, efficient and continuous feeding.

This invention provides a multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator. An air inlet pipe and an air pipe are sequentially connected along the air inlet direction. A rapid microbubble cutting and diffusion oxygen dissolving unit is fitted outside the air inlet pipe. An inner cylinder and an outer cylinder are sequentially fitted outside the air pipe from the inside to the outside. The inner cylinder has a first inner cylinder section, a second inner cylinder section, and a third inner cylinder section sequentially along the air inlet direction. A medium-sized bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the first inner cylinder section, a large bubble cutting and diffusion oxygen dissolving unit is installed on the outer wall of the second inner cylinder section, and an air guiding unit is installed on the outer wall of the third inner cylinder section. An air diffuser unit is installed at the air outlet of the air pipe. This multi-stage, multi-angle, rapid diffusion oxygen dissolving three-dimensional non-clogging microbubble aerator effectively cuts air into microbubbles, effectively solving the problems of clogging and short lifespan of traditional aerators after long-term use, and is suitable for aerobic aeration treatment.

The vacuum contact comprises a static end contact and a moving end contact, the static end contact comprises a first transverse magnetic assembly and a first longitudinal magnetic assembly, the first transverse magnetic assembly comprises a first spiral arm contact piece and a first conducting rod, the first longitudinal magnetic assembly is of a hollow structure, and the first longitudinal magnetic assembly is arranged on the peripheral side of the first conducting rod in a sleeving mode; the first radial arm contact blade is fixed at one end of the first conducting rod and is in contact with the first longitudinal magnetic assembly; the moving end contact comprises a second transverse magnetic assembly and a second longitudinal magnetic assembly, the second transverse magnetic assembly comprises a second radial arm contact blade and a second conducting rod, the second radial arm contact blade is fixed at one end of the second conducting rod and is arranged opposite to the first radial arm contact blade, and the second longitudinal magnetic assembly is of a hollow structure and is fixed on the first radial arm contact blade. The second longitudinal magnetic assembly sleeves the peripheral side of the second conductive rod. The advantages of the two magnetic fields are combined to control movement and diffusion of the vacuum arc, and the breaking capacity of the vacuum contact is improved from the aspect of mechanism.

The utility model discloses an indoor temperature and humidity adjusting device for archives, which comprises a temperature and humidity adjusting assembly, a speed increasing assembly, a fixed seat and a rotating seat, wherein the temperature and humidity adjusting assembly comprises the fixed seat and the rotating seat; the speed increasing assembly comprises a gear, a gear wheel, a rotating rod and a motor; the gears are arranged in a group, are equidistantly arrayed and are fixed to the outer side surface of the rotating seat; the gear wheel is rotatably engaged with one side of the gears; the rotating rod penetrates through the gear wheel and is fixed to the middle of the gear wheel; the motor is located above the rotating rod and is fixedly connected with the top end of the rotating rod through an output end. When the adjusting machine is opened to add humidity, the motor is started, the motor controls the rotating rod to rotate through the output end, the rotating rod drives the gear wheel to rotate, the gear wheel drives the gears meshed therewith, the gears drive the rotating seat to rotate, the rotating seat drives the adjusting machine at the top end to rotate, the adjusting machine rotates and sprays at the same time, the humidifying range is rapidly diffused, and the humidifying effect is obvious.

The utility model provides a kind of high-temperature-resistant long-life ball bearing retainer, it is related to bearing retainer technical field, and it includes: hold frame body;The retainer body is annular structure, and ball hole is arranged in annular array shape on the inner wall of retainer body;Annular array shape is arranged in the through hole of the outer wall of retainer body, and the through hole is circular hole structure, and the through hole arranged in annular array shape is jointly composed of the heat dissipation structure of retainer body.Utilize nickel-based alloy high melting point (1300 DEG C above) and strong oxidation resistance, so that retainer is not easy to heat softening or oxidation corrosion failure under high temperature working condition (such as industrial kiln, aeroengine), directly prolongs the service life under high temperature environment;Through type circular through hole forms three-dimensional heat dissipation channel, cooperates the forced convection of lubricating medium (oil / gas), and internal heat is quickly taken away.For example in high-speed motor, airflow passes through through hole can make retainer temperature reduce 20%~30%, avoid local overheating to cause material failure.

The application discloses a method for preparing polyethylene wax by using a carborane bridged rare earth metallocene catalyst, and simultaneously preparing a carborane bridged indenyl rare earth metallocene compound as a main catalyst, loading the prepared main catalyst and a cocatalyst on a magnetic mesoporous Fe3O4@Al2O3 core-shell nanoparticle carrier to obtain a supported rare earth metallocene catalyst; the main catalyst of the application is a carborane bridged indenyl rare earth metallocene compound with a structure shown in formula (I), wherein a bridging group adopts a closed carborane (closed-1,2-dicarbadodecaborane), and the cage-like three-dimensional structure has super-high thermal stability and chemical inertness and does not degrade or rearrange in a high-temperature molten state of 130-200 DEG C. Large-volume substituents such as methyl, tert-butyl, phenyl or 4-tert-butylphenyl are introduced on the indene ring to provide sufficient steric protection and further inhibit chain transfer and side reactions at high temperatures.

The invention discloses a system and a method for regulating and controlling the humidity of a cathode of an anode independent liquid supply AEM electrolytic bath. The system and the method are used for solving the problem of drying of a cathode film surface under high current density. The system comprises an electrolytic bath main body, a gas-liquid separation module and a humidification module. And an interface humidity adjusting layer is arranged in a cathode membrane electrode assembly of the electrolytic bath main body. Wet hydrogen produced by the cathode enters the gas-liquid separation module through the outlet to separate liquid water, and the liquid water is conveyed to the humidification module at the inlet end of the cathode and is converted into water vapor or fog drops to be mixed with hydrogen produced by the cathode to form humidified hydrogen backflow. Moisture in the humidified hydrogen is adsorbed by the interface humidifying layer and is uniformly diffused to a cathode film-electrode interface in the in-plane direction of the interface humidifying layer so as to maintain interface wetting. According to the method, independent moisture closed-loop circulation on the cathode side is constructed, so that self-regulation of the humidity of the cathode under the condition that external liquid supply is not needed is realized, the problems of moisture loss and non-uniform distribution caused by electroosmosis dragging are solved, and the operation stability and durability of the AEM electrolytic cell under high current density are remarkably improved.

The utility model discloses a Mylar film structure for aluminum shell battery, aluminum shell battery and electronic product belong to battery technical field, including Mylar film body, Mylar film body includes first cladding piece, second cladding piece and the connecting cladding piece of first cladding piece and second cladding piece are connected respectively, recesses is formed in first cladding piece and is used to store the first liquid storage groove of electrolyte, recesses is formed in second cladding piece and is used to store the second liquid storage groove of electrolyte, first liquid storage groove and second liquid storage groove all are located on the side surface of battery roll core. The utility model reaches the technical effect of improving diffusion efficiency, and promotes the long -term cycle performance of battery.

The application discloses a disc brake structure with a heat dissipation function, which comprises a left disc mechanism and a right disc mechanism fixedly arranged on the left and right sides and a sealing seat fixed between the left disc mechanism and the right disc mechanism, which is used for sealing a cavity formed between the left disc mechanism and the right disc mechanism; a transmission mechanism comprises a transmission shaft pipe and a transmission shaft inside the transmission shaft pipe, the transmission shaft is fixed with a fan blade, the fan blade rotates, is used for rapidly introducing air into the cavity through the transmission shaft pipe, and makes the air in the cavity rapidly discharged through a heat dissipation groove, a second heat dissipation hole and a first heat dissipation hole, so that the left disc mechanism and the right disc mechanism are rapidly cooled; a spoiler is used for disturbing the air in the cavity, so that the air just entering the cavity rapidly diffuses in the cavity and rapidly mixes with the original air in the cavity, so that the heat in the cavity is rapidly absorbed, and the disc brake is cooled.

The application discloses a low-temperature Prussian white sodium ion battery, which comprises a positive electrode, an electrolyte and a negative electrode, the positive electrode is selected from a Prussian white positive electrode material; the electrolyte comprises a sodium salt, an organic solvent and an electrolyte additive; the concentration of the sodium salt in the electrolyte is 0.4-0.7 mol / L; and the electrolyte additive comprises a fluorinated carbonate and a fluorinated acetate. The low-temperature Prussian white sodium ion battery disclosed by the application has high specific capacity and long cycle life at a low temperature of-20 DEG C.

The present disclosure relates to a kind of multi-level hole pure silicon molecular sieve and its preparation method and cyclohexanone oxime catalytic reaction method.The multi-level hole pure silicon molecular sieve has the following diffusion coefficient characteristics: with cyclohexane as probe molecule, the diffusion coefficient of the probe molecule in the multi-level hole pure silicon molecular sieve is 0.015-0.02 μm 2 / min, measured by zero-length column method.The present disclosure can effectively improve the molecular diffusion performance of molecular sieve, and when the molecular sieve is used for cyclohexanone oxime gas phase Beckmann rearrangement reaction, the selectivity of caprolactam and the service life of catalyst can be effectively improved.

This invention discloses a non-stoichiometric sodium iron manganese phosphate cathode material with high phase purity. This sodium iron manganese phosphate cathode material has the following general chemical formula: zMPO4-Na x Fe y Mn a‑y (PO4)2(P2O7) / C, where 3.7≤x≤4.3, 1≤y≤2, 2.92≤a≤3, 0<z≤0.1, and the molar ratio of Na to transition metals Fe and Mn (TM) (Na / TM) is between 1.23 and 1.45, with M being Sc, Y, Ho, or Tb. Through non-stoichiometric design, controllable concentrations of sodium vacancies and interstitial Na are actively introduced into the crystal lattice. + Optimized Na + Transport; then by introducing phosphate MPO4 with zircon-type structure as a diffusion promoter, Mn enrichment is avoided and the formation of NMP impurity phase is reduced, and the phase purity of the material is ≥93%; the synergistic effect of the two greatly improves the capacity and rate performance of the material.

The invention discloses an aromatic hydrocarbon alkylation catalyst as well as a preparation method and application thereof. The catalyst comprises: 10 to 90 parts of a ZSM-5 molecular sieve; 0.05-10 parts of at least one selected from Co, Mo and La in terms of metal oxide; and 20-60 parts of a binder component. In an XRD diagram of the ZSM-5 molecular sieve, characteristic diffraction peaks of crystal faces (101), (200), (501) and (303) are broadened, and the aspect ratios of the broadened diffraction peaks are independently selected from 2-7. When the catalyst is used in a reaction for preparing C8 aromatic hydrocarbon, unsym-trimethylbenzene can be co-produced, and meanwhile, the content of m-xylene in xylene and the content of ethylbenzene in the C8 aromatic hydrocarbon are reduced, so that the quality of the product C8 aromatic hydrocarbon is improved.

The utility model belongs to the technical field of environmental protection equipment, and particularly relates to an integrated multi-medium filtering type rainwater recycling device which comprises an installation cabinet, a multi-medium filter and a dosing assembly which are connected through a pipeline are arranged in the installation cabinet, and the multi-medium filter is provided with a water inlet pipe and a water outlet pipe. The dosing assembly comprises a clarifying agent tank and a long-acting disinfectant tank, the clarifying agent tank is connected with the water inlet pipe through a pipeline, and the long-acting disinfectant tank is connected with the water outlet pipe through a pipeline. According to the present invention, the filtration effect is improved, the floor area is reduced, the adopted clarifying agent is added in front of the filter, the clarifying agent enables the impurities in the rainwater to form the aggregated large flocs before entering the filter so as to improve the filtration effect, the long-acting disinfectant is added after the water passes through the filter, and the long-acting disinfectant adopts the chlorine preparation so as to achieve the long disinfection effect lasting time.

This invention relates to the field of sensing materials technology, specifically disclosing a cellulose-based conductive hydrogel material for ascorbic acid detection, its preparation method, and its applications. This hydrogel uses TEMPO oxidized cellulose nanofibers (TOCNF) as a biocompatible matrix. By introducing Cu-BTC / CNT composite nanoparticles, a three-dimensional conductive network with both high electrochemical activity and structural stability is constructed. While retaining the biocompatibility and flexibility of cellulose, it exhibits particularly high sensitivity and selectivity in detecting small biomolecules such as ascorbic acid, with short response time and good stability. This method achieves synergistic optimization of the composite material's structural uniformity and functionality without relying on complex molding processes. Experimental results show that the conductive hydrogel prepared by this invention possesses good mechanical properties and biocompatibility, exhibiting high sensitivity and stability in biosensing fields such as ascorbic acid detection, providing a novel high-performance material basis for flexible biosensors.

This invention provides a nanofiber fluoropolymer composite fabric and its preparation process, belonging to the field of composite fabric technology. The process includes the following steps: S1, electrospinning a one-way moisture-wicking layer onto the outer layer of cotton fabric; S2, preparing a hollow fiber / nanofiber fluoropolymer composite layer; S3, laying a PA hot-melt web film layer on the one-way moisture-wicking layer, then laying the hollow fiber / nanofiber fluoropolymer composite layer on the PA hot-melt web film layer, heating, laminating, and cooling to obtain the nanofiber fluoropolymer composite fabric. This invention achieves both waterproof performance and one-way moisture-wicking permeability.

The application discloses a carbon-silicon composite catalyst, a preparation method thereof and application of the catalyst in preparation of aromatic hydrocarbons through catalytic pyrolysis of kitchen waste, and belongs to the technical field of solid waste resource utilization and catalytic conversion. The catalyst takes ZSM-5@SBA-15 core-shell structure composite molecular sieve as a carrier, loads nano NiO active components, and coats N-doped carbon layers on the surface. The catalyst is prepared through hydrothermal synthesis of the core-shell carrier, impregnation of the metal loading, and calcination of the carbon layer in an inert atmosphere. The pretreated kitchen waste is mixed with the catalyst, and catalytic pyrolysis is carried out in an inert atmosphere at normal pressure, so that bio-oil rich in aromatic hydrocarbons (BTX) can be prepared with high selectivity. The content of the aromatic hydrocarbons in the obtained bio-oil is greater than or equal to 72%, and the content of BTX in the total aromatic hydrocarbons is greater than or equal to 58%, so that high-quality raw materials can be provided for subsequent preparation of bio-jet fuel components and fine chemicals. The application has simple process, environmental and economic benefits, and wide application prospect.

The invention discloses a negative electrode current collector for a high-performance sodium-based liquid metal battery and a preparation method of the negative electrode current collector, and belongs to the technical field of electrochemical energy storage. The negative electrode current collector comprises a foam matrix and a metal intermediate layer which is generated on the surface of the matrix and in pores in situ, the foam matrix is selected from foam nickel or foam iron-nickel alloy, and the metal intermediate layer is formed by reacting a metal medium formed by combining one or more of tin, indium, bismuth, gallium-based alloy or cadmium with the foam matrix. The preparation method comprises the three steps of foam matrix cleaning pretreatment, metal interlayer in-situ generation and sodium soaking treatment. By constructing the multi-metal intermediate layer and cooperatively optimizing the pore density and components of the foam matrix, the wettability of the current collector and the liquid sodium is remarkably improved, the problem of unsmooth backflow of the liquid sodium during high-current charging is relieved, the battery can realize more than 200 times of stable circulation under the high-current density of 800mAcm <-2 >, the capacity retention ratio is close to 100%, and the battery has a wide application prospect. And a key material support is provided for commercial application of the sodium-based liquid metal battery.

This invention discloses a method for the conversion of C8 mixed aromatics. The method includes the following steps: the C8 mixed aromatics react under the action of a catalyst, and the reaction conditions are as follows: reaction temperature of 385–420℃, preferably 390–410℃; pressure of 1.0–2.0 MPa, preferably 1.0–2.0 MPa; hydrogen / hydrocarbon molar ratio of 1–3, preferably 1.5–2.5; and feed mass hourly space velocity of 7–12 h⁻¹. ‑1 8-10 hours is preferred. ‑1 The catalyst has mesopores with a pore size of 3-6 nm accounting for 45-85% of the total pore volume, preferably 50-75% of the total pore volume. This method enables xylene isomerization into an equilibrium mixture, while more effectively removing alkyl groups from the ethylbenzene side chain.

The present application relates to a kind of flame-retardant anti-shrinkage PBAT / bamboo powder supercritical foaming material and its preparation method, belong to degradable foaming material technical field.To solve the problem that PBAT system introduces bamboo powder and flame retardant causes foaming material cell structure uneven, density uneven, mechanical property drops, the present application provides a kind of flame-retardant anti-shrinkage PBAT / bamboo powder supercritical foaming material, component includes PBAT, bamboo powder and flame retardant, melt extrusion granulation after being placed in airtight container, fills in supercritical gas and is foamed to be prepared.The present application improves the anti-shrinkage and flame-retardant performance of PBAT foaming material by the addition of bamboo powder and flame retardant;By optimizing the injection amount of supercritical gas, foaming temperature and pressure, reduce foaming instability, effectively offset the adverse effects of bamboo powder and flame retardant on cell growth, obtain uniform cell structure and density, further improve the mechanical property of material.

The utility model discloses a cold plate type radiator which comprises a first cover plate, a second cover plate and a cooling liquid conveying device, a groove is formed in the second cover plate, and the first cover plate and the second cover plate are connected to enable the groove to form a heat exchange cavity. The first cover plate is provided with a liquid inlet and a liquid outlet which are communicated with the heat exchange cavity, the cooling liquid conveying device is connected with the liquid inlet and used for conveying cooling liquid into the heat exchange cavity from the liquid inlet and enabling the cooling liquid to flow out from the liquid outlet, and the cold plate type radiator further comprises a porous metal piece. A plurality of heat exchange ribs located in the heat exchange cavity are arranged on the second cover plate at intervals, and the porous metal piece is filled in the interval, so that cooling liquid from the liquid inlet flows out from the liquid outlet through the porous metal piece. The utility model further discloses a cooling system.

The invention discloses a method for preparing durene by utilizing unsym-trimethylbenzene and methanol, which comprises the following steps: mixing unsym-trimethylbenzene, methanol and hydrogen, heating and gasifying, feeding into a fixed bed reactor, and carrying out alkylation reaction through a molecular sieve catalyst with hierarchical pore distribution to prepare durene, after a reaction product flowing out of the alkylation reactor is subjected to gas-liquid separation and oil-water separation, liquid-phase hydrocarbon components enter a rectification separation system, and light hydrocarbon with the carbon number of C6 or below, methylbenzene, xylene, trimethylbenzene, tetramethylbenzene and aromatic hydrocarbon fractions with the carbon number of C11 or above are separated out. The mesoporous channel of the catalyst increases the contact probability of the raw material and the active site of the molecular sieve, promotes the playing of the activity of the catalyst in a fixed bed, reduces the diffusion resistance of the raw material and the product, promotes the rapid diffusion of the product, and reduces the occurrence of side reactions, so that the conversion rate of unsym-trimethylbenzene and the selectivity of durene are improved; therefore, high durene yield can be obtained.

This utility model discloses a battery pack, including a housing. The housing includes a frame and a base plate connected together. Multiple cylindrical batteries and structural beams are arranged on the base plate. The cylindrical batteries are arranged along the extension direction of the structural beams. Explosion-proof valves on the cylindrical batteries are positioned close to the structural beams, with the distance between the explosion-proof valves and their projection onto the structural beams being 9-19 mm. This battery pack not only ensures battery safety in the event of thermal runaway but also improves the space utilization of the housing's storage compartment.

The application discloses a nylon composite material, which comprises the following components in parts by weight: aliphatic nylon 60-80 parts; MCA flame retardant 15-35 parts; polyethylene glycol 5-10 parts; and polyether block amide 4-10 parts. The MCA with specific free cyanuric acid content is used in the application, and the MCA generates inert gas due to the high temperature generated by an electric arc in the IPT test, which is beneficial to the rapid outward diffusion of the electric arc. Meanwhile, the polyether block amide as a charge dissipating agent can reduce the electric arc energy and guide the rapid diffusion of the electric arc. Meanwhile, the introduction of the polyethylene glycol can improve the water absorption of the nylon composite material, and the electric arc diffusion is synergized, so that the IPT is further improved. Meanwhile, the nylon composite material has a flame retardancy of 0.8mm V-0.

Steam chamber and semiconductor package module and power conversion device including the same. The steam chamber for a semiconductor package module according to an embodiment can include a lower metal plate, a hollow structure, and an upper metal plate sequentially disposed. The lower metal plate can include a first plate, a second plate, and a third plate sequentially disposed. A coefficient of thermal expansion of the second plate can be less than a coefficient of thermal expansion of the first plate or the third plate.

The utility model discloses a kind of processing structures of inner insulation power semiconductor discrete devices, it is related to the technical field of semiconductor discrete devices.The utility model includes insulating sleeve and substrate, insulating sleeve includes support insulating layer, recess is opened in support insulating layer top, chip is fixedly connected in recess inner wall, the bottom of chip is fixedly connected with several pins, support insulating layer top is fixedly connected with several insulating columns close to chip periphery, insulating column is set as hollow structure, several insulating column top is fixedly connected with covering insulating layer.By setting insulating sleeve, specifically is recess forms the double interface of physical support and electrical isolation, insulating column avoids the charge accumulation of solid insulating material interface, top covering insulating layer forms sealing, and forms three-dimensional insulating space, solve the processing structure of existing inner insulation power semiconductor discrete device generally adopts plane single-layer insulating layer design, the problem that uneven electric field distribution easily leads to partial discharge risk.

The utility model relates to a kind of integrated RDT chip automatic detection detection instrument, including cabinet, the cabinet front end left side hinged connection sealed cabinet door, the power socket is evenly equipped in the rear side of the cabinet interior, the left and right sides of the cabinet inner wall are equipped with carrier plate sliding slot, the carrier plate sliding slot is equipped with slide rail inside, the slide rail sliding connection drawer type test carrier plate, with the advantages that accurate temperature control is realized, it is convenient to maintain and repair, and equipment utilization is improved.

A molded case circuit breaker comprises an operating mechanism, a contact mechanism and an interlocking mechanism, an operating handle drives a moving contact to move through the operating mechanism, the interlocking mechanism comprises an interlocking piece and an interlocking spring, and the interlocking spring is used for driving the interlocking piece to lock the moving contact in a state that the moving contact cannot be in contact with a static contact. In the process that the operating handle moves from the opening position to the closing position, when the operating handle moves to the interlocking position, the operating handle or the operating mechanism drives the interlocking piece to unlock the moving contact, the operating handle is driven by the energy storage spring to move to the opening position and the closing position, and when the operating mechanism is not closed in place, the interlocking piece is driven by the energy storage spring to unlock the moving contact. According to the technical scheme, pilot connection between the moving contact and the static contact can be avoided, an operator can be helped to judge the working state of a product, misjudgment is avoided, potential safety hazards are reduced, when the operating handle moves to the action position, the closing force of the energy storage spring is larger, the moving contact can be driven to make contact with the static contact rapidly, and the rapid closing function is achieved.

The invention provides a fiber composite membrane material with humidification and dehumidification functions and a preparation method and application thereof, and belongs to the technical field of composite membrane materials.The fiber composite membrane material comprises non-woven fabric made of polyester fibers and a drying agent, and the polyester fibers are porous polyester staple fibers; the drying agent is uniformly loaded and stably fixed on the surface of the porous polyester fiber, the inner wall of the porous structure and in fiber gaps of the non-woven fabric. According to the fiber composite membrane material, the non-woven fabric made of the polyester fibers of the porous structure serves as a base material, the porous structure enables liquid water to be rapidly diffused, the low hygroscopicity of the polyester is combined, the liquid water is easy to desorb, and the humidification rate is increased; meanwhile, the porous structure of the porous polyester fiber serves as a loading site of the drying agent, leakage of the liquid drying agent is prevented while efficient dehumidification is achieved, the stability of the base body non-woven fabric material can be improved through the coated porous polymeric membrane, and the porous polymeric membrane can also serve as a second barrier for preventing leakage of the liquid drying agent; therefore, the fiber composite membrane material has humidifying and dehumidifying functions.