1678 results about "Desiccant" patented technology

A three-way heat exchanger includes an airflow inlet, an airflow outlet, a heat transfer fluid inlet manifold extending proximate the airflow outlet, and a heat transfer fluid outlet manifold extending proximate the airflow outlet. The heat exchanger also includes panel assemblies each including a frame defining a heat transfer fluid channel and a membrane positioned on the frame and defining a desiccant channel. The heat transfer fluid channel is connected to the heat transfer fluid inlet and outlet manifolds for channeling a flow of the heat transfer fluid therebetween counter to the airflow direction. Each panel assembly also includes a heat transfer fluid flow guide positioned in the heat transfer fluid channel to control the flow of the heat transfer fluid counter to the airflow direction.

Systems and methods for conditioning air streams are described herein. In some embodiments, a system can include an absorber and a desorber. The absorber configured to receive a supply air stream including moisture at a first moisture concentration and expose it to a liquid desiccant to remove moisture from the supply air stream and produce a conditioned air stream. The desorber configured to receive a regeneration stream at a first mass flow rate and at least a portion of the liquid desiccant from the absorber and having at least one salt at a first weight percent. The desorber includes an array of emitters configured to direct the portion of the liquid desiccant at a second mass flow rate to a desorber media to facilitate removing moisture from the portion of the liquid desiccant and produce a concentrated liquid desiccant with the at least one salt at a second weight percent.

A system comprises a liquid desiccant regeneration system, a first air contactor stage, and a second air contactor stage. The regeneration system has a first stage with a first concentration output and first diluted output, and a second stage with a second concentration output, different from the first concentration output, and a second diluted output. The first air contactor stage is coupled to the first concentrated output to form a first output air stream having a reduced water content and a first diluted air contactor output. The second air contactor stage is coupled to the second concentrated output to form a second output air stream having a reduced water content and a second diluted air contactor output. Both diluted air contactor outputs are recirculated into the regeneration system, and the output air streams are combined.

A liquid desiccant system includes a liquid desiccant loop having an absorber unit in fluid communication with a desorber unit and liquid desiccant flowing between the absorber unit and the desorber unit. The liquid desiccant system includes a supply airflow path passing through the absorber unit and forming an absorber liquid / air interface within the absorber unit and a conditioned airflow exiting the absorber unit. The liquid desiccant system includes a regeneration airflow path passing through the desorber unit and forming a desorber liquid / air interface within the desorber unit and an exhaust airflow exiting the desorber unit. A heat exchanger is thermally coupled to the supply airflow path for removing heat from supply airflow upstream of the absorber unit. A heat exchanger is thermally coupled to the regeneration airflow path adding heat to regeneration airflow upstream of the desorber unit.

The utility model discloses a graphene carbon heat-conducting fin and reversible desiccant membrane combined membrane component for demisting an automobile lamp, a graphene carbon heat-conducting fin layer comprises a heat absorption area and a heat conduction area, the heat absorption area is arranged towards a heating element in the automobile lamp and is used for absorbing infrared heat, the heat conduction area is formed by extending from the heat absorption area to a cold area which is easy to fog, and the reversible desiccant membrane is arranged in the heat conduction area. The heat is exported for demisting; the reversible drying agent diaphragm layer is arranged in the heat conduction area and comprises a supporting framework layer, a functional layer and active filler; the support framework layer is an expanded polytetrafluoroethylene membrane with a microporous structure, the fog absorbent slurry forms a functional layer on the surface of the expanded polytetrafluoroethylene membrane, and the fog absorbent slurry is embedded into the microporous structure to form active filling. According to the utility model, heat generated by electrical elements in the automobile lamp is utilized to realize moisture absorption and desorption circulation of the reversible drying agent diaphragm, so that the fogging problem of a novel flat and long and narrow belt type automobile lamp is effectively solved, the structure is simple, and the cost is low.

The utility model discloses a heat pump driven renewable drying bed dehumidification dew point evaporative cooling air conditioning system which comprises a heat pump subsystem, a drying bed dehumidification subsystem, a tubular dew point evaporative cooling subsystem, an adsorption air pipeline subsystem and a regeneration air pipeline subsystem. The drying bed dehumidification subsystem bears the latent heat load of the air conditioning system, and the tubular dew point evaporative cooling subsystem bears the sensible heat load of the air conditioning system. The heat pump is used for regenerating saturated solid drying agent particles in the drying beds, one drying bed is applied to the adsorption process, the other drying bed is applied to the regeneration process, the dehumidification capacity of the drying beds is guaranteed, meanwhile, efficient dehumidification is achieved, the tubular dew point evaporation cooling subsystem is used for cooling, heat pollution is reduced, emission is reduced, and the energy-saving and environment-friendly effects are achieved. And the requirement of people on indoor temperature is met.

The utility model discloses a powder-liquid double-chamber bag drying agent and deoxidizing agent feeding device which comprises a deoxidizing agent conveying assembly used for receiving a deoxidizing agent produced by a deoxidizing agent discharging assembly and conveying the deoxidizing agent to a designated position; the desiccant conveying assembly is used for receiving the desiccant produced by the desiccant discharging assembly and conveying the desiccant to a designated position corresponding to the deoxidizing agent; the aluminum film stamping assembly is used for producing an aluminum film with a groove; the glue dispenser is used for spraying glue into the grooves in the surface of the deoxidizing agent and the surface of the aluminum film; and the carrying assembly is used for carrying the deoxidizing agent, bonding the deoxidizing agent with the drying agent and carrying the bonding substance. According to the device for putting the drying agent and the deoxidizing agent into the powder-liquid double-chamber bag, glue is sprayed to the surface of the deoxidizing agent through the glue dispenser, when the deoxidizing agent is moved through the carrying assembly, the deoxidizing agent and the drying agent can be bonded through the glue, and finally a bonded part is transported into an aluminum film through the carrying assembly, so that a working method of manual bonding is replaced, and the working efficiency is improved. The manual production cost is reduced; the production efficiency is improved.

There is provided an aquaculture assembly for generating compressed air and concentrated oxygen. The assembly includes an aeration system. The assembly includes an oxygen concentrator. The assembly includes a compressor operatively connected to both the aeration system and the oxygen concentrator. The compressor selectively directs compressed air to the aeration system, the oxygen concentrator or both the aeration system and the oxygen concentrator. The assembly may include a variable speed engine directly coupled to the compressor. There is also provided oxygen generation system with a fluid-air heat exchanger configured to receive therethrough and cool compressed air. A filtration unit, downstream of the fluid-air exchanger, removes liquid from the compressed air so cooled. An oxygen concentrator, downstream of the filtration unit, includes one or more vessels via which the compressed air is selectively received. Each said vessel includes an adsorbent and a desiccant therewithin.

The invention discloses a switch cabinet convenient for rapid dehumidification, cooling and heat dissipation, and relates to the technical field of switch cabinets, the switch cabinet comprises a dehumidification and cooling mechanism and a supporting base installed at the bottom of the dehumidification and cooling mechanism, a water-cooling heat dissipation mechanism is arranged on the outer side of the top of the dehumidification and cooling mechanism, and a water-cooling circulating pipe is fixedly installed in the water-cooling heat dissipation mechanism; the dehumidifying and cooling mechanism comprises a cooling pipeline, a plurality of first air openings are formed in one side of the interior of the cooling pipeline, a first connecting pipe is fixedly installed at the bottom of the cooling pipeline, a supporting plate is fixedly installed on one side of the bottom of the first connecting pipe, and the supporting plate is fixedly installed at the top of a supporting base. According to the technical scheme, components in the switch cabinet are rapidly cooled in an air blowing and exhausting mode, meanwhile, the dehumidification effect can be achieved, the phenomenon that the service life of the components is affected due to mutual influence caused by heat generated by the components is avoided, meanwhile, the service life of a drying agent is prolonged, and the effect of saving resources is achieved.

A magnetic disk device according to an embodiment includes a housing in which a base, an inner cover provided with a first through-hole, and an outer cover are combined in this order and hermetically sealed, a magnetic disk that is stored in the housing, a first desiccant unit that is provided at the inner cover to face the base at a position away from the base, and a second desiccant unit that is provided at the outer cover and inserted into an internal space of the housing through the first through-hole provided in the inner cover to face the base at a position away from the base.

The invention discloses chemical tail gas treatment equipment, and relates to the technical field of chemical tail gas treatment equipment. The chemical tail gas treatment equipment comprises a base, and the top of the base is fixedly connected with a lower shell; the top of the cover plate is fixedly connected with an air outlet, and the interior of the cover plate is rotationally connected with a first rotating shaft; a fixing shell is fixedly connected to the top of the lower shell, the interior of the fixing shell is slidably connected with a drawing box through a sliding groove, a drying agent is movably connected to the interior of the drawing box, a first gear is fixedly connected to the outer side of the first rotating shaft, a second rotating shaft, a third rotating shaft, a fourth rotating shaft and a fifth rotating shaft are movably connected to the interior of the fixing shell, and a third gear is fixedly connected to the top of the second rotating shaft; the top of the third rotating shaft is fixedly connected with a second gear, and the outer sides of the second rotating shaft and the third rotating shaft are movably connected with the drawing box through transmission pieces. When the chemical tail gas treatment equipment is used, a first rotating shaft is rotated, so that a drawing box moves inwards, moisture and impurities in waste gas are removed, and the service life of the equipment is prolonged.

The invention discloses welding equipment for water conservancy construction pipelines, and relates to the technical field of welding, the welding equipment comprises a supporting assembly, a drying assembly and two pipeline main bodies, the outer surface of the drying assembly is provided with a welding assembly, and the drying assembly comprises two arc-shaped positioning plates. According to the welding equipment for the water conservancy construction pipeline, a drying agent filling material is placed in the bag net, when the bag net is tightly attached to the pipeline body, the drying agent filling material can absorb moist water at the joint of the pipeline body, and the drying agent filling material is a silica gel drying agent; when the silica gel desiccant is tightly attached to the surface of the pipeline body and makes contact with humid water, humid water molecules can move to the surface of silica gel and do not chemically react with materials of the pipeline body and welding materials used in the welding process, and adverse effects on the pipeline and the welding quality are avoided; the problem that after the surface of an existing water conservancy construction pipeline is affected with damp, welding quality is affected is solved.

The invention belongs to the technical field of transformers, and discloses an adjustable assembly type transformer which comprises a transformer body, an oil conservator is arranged on the top of the transformer body in a communicating mode, the adjustable assembly type transformer further comprises a supporting assembly, the supporting assembly is fixedly installed on the side portion of the transformer body, and the supporting assembly communicates with the oil conservator. The exhaust through groove of one adapting pipe keeps communicating with the connecting pipe, after the weight of a drying agent in the adapting pipe communicating with the connecting pipe reaches a set value, the magnetic force of the first magnet cannot meet the requirement for adsorption and fixation of the adapting pipe at the moment, and the adapting pipe rotates with the fixing shaft rod as the center shaft; the silica gel desiccant saturated in adsorption rotates to the bottom end of the fixed shell, the next adapting pipe is adsorbed by the first magnet and communicates with the connecting pipe through the exhaust through groove, and therefore sucked gas can be dried through the desiccant in the next adapting pipe, the replacement frequency of the desiccant in the respirator can be reduced in the process, and the replacement efficiency of the desiccant in the respirator is improved. And therefore, the maintenance cost of the respirator is reduced.

An air dryer cartridge including a desiccant container and a desiccant contained in the desiccant container is provided. The desiccant container includes a wall forming an oil filter receptacle recessed into the desiccant container. The air dryer cartridge includes an insertion opening for insertion of at least a portion of an oil filter into the oil filter receptacle.

A liquid desiccant regenerator configured to produce a first output stream with a higher concentration of a liquid desiccant than a first input stream. The regenerator also produces a second output stream with a lower concentration of the liquid desiccant than a second input stream. Regeneration of the liquid desiccant in the liquid desiccant regenerator decreases a temperature of the liquid desiccant regenerator. The system includes an air contactor coupled to the first output stream and exposing an input air stream to the first output stream. The first output stream absorbs water from the input air stream to form at least one diluted output desiccant stream. A heat pump of the system is thermally coupled to move the heat from the first output stream to the liquid desiccant regenerator. The heat moved to the liquid desiccant regenerator increases an efficiency of the liquid desiccant regenerator.

The utility model discloses an automatic drying agent packaging device, and relates to the field of packaging equipment. An automatic drying agent packaging device comprises a packaging bag conveying belt used for conveying drying agent packaging bags; the carton input belt is used for conveying cartons stacked into paperboards; the carton opening mechanism is located at the tail end of the carton input belt and used for completing carton opening and forming; the carton output belt is connected to the carton opening mechanism and used for conveying the carton formed after carton opening; the mechanical arm is located between the packaging bag conveying belt and the carton output belt and used for clamping and feeding the drying agent packaging bags into the carton; the carton sealing mechanism is connected to the carton output belt and used for packaging the cartons; and the stacking mechanism is used for achieving automatic stacking of the cartons. According to the drying agent packaging and stacking device, the boxing, packaging and stacking processes of drying agents are fully automatically achieved, and the working efficiency is improved.

The invention discloses a mechanical arm for disassembling a distribution transformer, and relates to the field of mechanical arms, the mechanical arm comprises a mechanical arm body, a connecting seat is mounted on the mechanical arm body, two pneumatic shears and an air pipe are mounted on the connecting seat, the air pipe is connected to the pneumatic shears, and a mounting shell is mounted on the pneumatic shears; the device further comprises two deviation emergency stop devices, and the two deviation emergency stop devices are installed on the two installation shells correspondingly. It needs to be explained that in the embodiment of the invention, when the position of the pneumatic shear is wrong or air in the air pipe is too humid, the emergency stop switch is triggered, then the mechanical arm machine body is suddenly stopped, and the problems of insufficient shearing, damage and the like of the pneumatic shear caused by wrong shearing or too large moisture are avoided; in addition, air on one side of the pneumatic shear is dried through a drying agent box, the problem that the interior of the pneumatic shear is affected with damp and corroded due to the fact that air in an air pipe is humid is solved, and therefore safe use of the pneumatic shear is guaranteed.

The utility model discloses a combined data storage device for enterprise management, and relates to the technical field of enterprise management. Universal wheels with self-locking performance are arranged at four corners of the bottom surface of the bottom-layer bin; a first hasp is arranged at the upper part of the inner side wall of the bottom-layer bin; a middle-layer bin is detachably arranged above the bottom-layer bin; a second hasp is arranged at the upper part of the inner side wall of the middle-layer bin; drying agent storage cavities are fixedly connected to the side walls of the bottom-layer bin and the middle-layer bin in a penetrating manner; according to the utility model, the storage bin can be added and used for storing data according to the data storage amount managed by an enterprise, the assembly is convenient and fast, meanwhile, the drying agent storage cavity is arranged, and moisture in the bin opening can be adsorbed through a drying agent in the drying agent storage cavity, so that the data is prevented from being affected with damp, and the data is protected.

The invention relates to the technical field of preparation of sealing materials, in particular to a photovoltaic module sealant with ultralow water vapor transmittance and a preparation method of the photovoltaic module sealant. The invention discloses a solar cell panel which at least comprises the following components in parts by weight: 4-10 parts of polymer rubber or resin, 25-30 parts of medium molecular weight polyisobutene, 7-15 parts of silane modified resin, 15-20 parts of reinforcing filler, 30-40 parts of incremental filler, 3-8 parts of a drying agent, 0.3-1 part of an antioxidant and 0.3-1 part of an ultraviolet stabilizer. Meanwhile, the anti-aging performance and the processing performance are excellent, so that the photoelectric conversion efficiency of the solar cell is improved, and the service life of the solar cell is prolonged.

The utility model provides a storage device for producing medical intermediates, which comprises a storage box, a drying agent groove arranged on the inner bottom wall of the storage box, a placing plate arranged inside the storage box, and a fixing mechanism arranged on the outer side of the placing plate and used for preventing the placing plate from shaking. The fixing mechanism comprises a vertical rod fixed on the placing plate, and two groups of connecting rods which are symmetrically distributed up and down are fixed in the storage box. According to the storage device for medical intermediate production, the problems that when an existing storage device for medical intermediate production is used, a containing plate used for containing a medicine box is installed in an inner cavity of a box body, the containing plate is limited only through a sliding groove in the side wall of the box body, the containing plate is not fixed, and the containing plate cannot be fixed are solved. Therefore, the problems that the box body easily shakes a placing plate due to external shaking, the stability of the placing plate is not high, the medicine box is seriously turned on one side, and unnecessary economic loss is caused are solved.

The invention relates to the technical field of photovoltaic packaging materials, and discloses a butyl sealant for a self-repairing photovoltaic module and a preparation method of the butyl sealant. The butyl sealant is prepared from the following substances in parts by weight: 40 to 60 parts of modified butyl rubber, 20 to 35 parts of inorganic filler, 5 to 15 parts of tackifying resin, 2 to 8 parts of plasticizer, 0.5 to 2 parts of anti-aging agent, 0.3 to 1.0 part of bifunctional crosslinking monomer, 0.08 to 0.25 part of composite catalyst, 2 to 5 parts of microcapsule type repairing agent and 3 to 10 parts of drying agent. According to the invention, through the dual-mechanism design of a'sulfydryl-amino-silicon oxygen bond 'dynamic network and the microcapsule type repairing agent, the self-repairing performance and the aging resistance are synchronously and remarkably improved, and the contradiction that'the self-repairing performance and the aging resistance of a traditional material are difficult to consider at the same time' is solved. Tests show that the 12h repair rate of the sealant for 3mm scratches at 50 DEG C is greater than or equal to 98%, the tensile strength retention rate is greater than or equal to 92% after the sealant is subjected to damp-heat aging at 85 DEG C / 85% RH for 1000 h, and the sealant is superior to existing similar products.

The invention provides a desiccant back flushing control method and device and an air suspension system.The method includes the steps that a controller of the air suspension system calculates the mass of air sucked from the outside by a high-pressure air tank according to the pressure value and the temperature value of the high-pressure air tank, and then the mass of the air sucked from the outside by the high-pressure air tank is calculated according to the maximum mass of the air capable of being adsorbed when the desiccant reaches the complete saturation state; the saturation rate of the drying agent is obtained, the state of the drying agent is judged based on the saturation rate, and when it is determined that the drying agent reaches the saturation state, the back flushing program is started. As the pressure value and the temperature value of the high-pressure air tank can be obtained by using the original pressure sensor and the original temperature sensor in the air suspension system, a humidity sensor and a flow sensor do not need to be additionally arranged, the system cost can be reduced, and the system reliability is improved. The saturation rate of the drying agent is judged by accurately calculating the mass of air accumulated by the air tank and sucked from the outside, and accurate control over back flushing of the drying agent can be achieved.

The invention discloses a control method for desiccant regeneration in an air suspension system. The control method comprises the steps that the current environment condition of the air suspension system is obtained; according to the environmental conditions, a blowback execution strategy corresponding to the environmental conditions is determined from a pre-stored control data set, and the control data set is obtained in advance on the basis of executing calibration tests of dynamic simulation working conditions under different environmental conditions; the dynamic simulation working condition is used for simulating consumption of compressed air in the actual vehicle running process; and in the operation process of the air suspension system, according to the back flushing execution strategy, the air suspension system is controlled to execute the back flushing action, so that regeneration of a drying agent in the air suspension system is achieved. Meanwhile, the invention further discloses an air suspension system, a control unit and a vehicle.

The invention relates to the technical field of metering boxes, and provides a metering box of a power distribution network, which comprises a base, a box body is mounted at the upper end of the base, a box top is fixedly mounted at the top end of the box body, metering equipment is mounted on four side surfaces of the base, and a moisture-proof mechanism is movably mounted at the upper end of the base. A rotary driving mechanism is arranged in the middle of the base, a motor is connected to the bottom end of the driving mechanism, and a glass plate is rotationally connected to the upper end of the driving mechanism. The movable moisture-proof mechanism and a large amount of silica gel desiccant are installed, moisture absorption and initial moisture removal are conducted on the interior of the sealed metering box, after the moisture-proof mechanism is exposed out of the upper portion of the box top, the side plates are unfolded, the silica gel desiccant is exposed out of the metering box, the silica gel desiccant is conveniently subjected to external high-temperature baking and sun exposure, and moisture in the desiccant is evaporated; and the drying agent can be conveniently and repeatedly used, the replacement frequency of the silica gel drying agent is reduced, and the workload is reduced.

The utility model relates to the technical field of storage and transportation boxes, in particular to a storage and transportation box suitable for powder materials, which comprises a box body, a cover plate, a rubber block and a bottom reinforcing plate, the side wall of the box body is sequentially provided with an outer wall, a partition cavity and an inner wall provided with air holes from outside to inside, and a drying agent bag is detachably placed in the partition cavity. A protrusion is arranged below the rubber block at the opening of the partition cavity, a clamping groove is formed in the rubber block, a cover plate covers the box body, and idler wheels are symmetrically arranged on the two sides of a bottom reinforcing plate below the box body. The drying agent bag is placed between the outer wall and the inner wall provided with the air holes, the drying agent bag can dry the powder material container bag in the box body through the inner wall provided with the air holes, the drying agent bag in the partition cavity can be replaced by detaching the rubber block, the idler wheels are arranged on the lower portion of the box body, and therefore the drying agent bag can be conveniently replaced. And the cover plate is provided with the grooves for accommodating the rollers to prevent the rollers from rolling, so that the stability is improved when a plurality of box bodies are stacked, the space is saved, and the safety is also improved.

The utility model discloses a hydrogen dryer of a hydrogen preparation system in the technical field of hydrogen dryers, which comprises a hydrogen dryer, a controller arranged on the right side wall of the hydrogen dryer, a gas inlet pipe arranged below the left side wall of the hydrogen dryer in a penetrating manner, an exhaust hood arranged above the inside of the hydrogen dryer, and a gas outlet pipe arranged at the top of the hydrogen dryer in a penetrating manner, a flow dividing assembly is arranged below the inner wall of the hydrogen dryer, two sets of drying boxes are arranged on the inner wall of the hydrogen dryer, drying holes are evenly formed in the outer side walls of the two sets of drying boxes, and the two sets of drying boxes are filled with activated carbon drying agents. Under the cooperation of the drying box, the feeding pipe, the discharging pipe and the sealing assembly, an activated carbon drying agent in the drying box can be conveniently replaced, when the drying effect of the activated carbon drying agent becomes poor, the activated carbon drying agent is rapidly replaced, and the drying effect of hydrogen is improved.

The invention relates to the technical field of desiccant packaging equipment, and discloses a desiccant packaging supply film forming device which comprises a packaging forming device and a regulation and control conveying mechanism installed on the packaging forming device. Comprising a first rotating shaft fixedly connected with the packaging forming device and a first friction roller fixed to the first rotating shaft. Each of the two second friction assemblies comprises a second friction roller mounted on the first rotating shaft; the moving assembly is used for controlling the two second friction rollers to move; the heat dissipation assembly works in cooperation with the moving assembly and is used for enabling two second friction rollers to move in opposite directions through the moving assembly according to the friction coefficient needed by the packaging film and the material of the packaging film, and the contact area between the two second friction rollers and the packaging film is changed; for a smooth PE film, the contact area is reduced, and the friction force is reduced; for rough composite aluminum films, the contact area is increased, the friction force is improved, film material slipping or tensile deformation is avoided, and the film supply stability is ensured.

The utility model discloses a portable damp-proof picnic mat which comprises a mat body, a fixing structure, a containing structure and a damp-proof structure. The fixing structures are arranged at four corners of the pad body, the storage structure is arranged on one side of the pad body, and the moisture-proof structure is arranged at the bottom of the pad body. Compared with the prior art, the novel picnic mat has the advantages that the picnic mat can be inserted into soil through the pegs so that the picnic mat cannot be blown disorderly by wind in use, the situation that the picnic mat is easily affected by wind to be blown up or turned over and moved is avoided, use experience is improved, and the waterproof layer is arranged, so that the novel picnic mat is convenient to use. The drying agent bag is placed in the placing groove, and then the hook-and-loop fastener and the hook-and-loop fastener are adhered together to fix the drying agent bag, so that moisture absorption is performed on the picnic mat, and the picnic mat has a good moisture-proof function.

The utility model discloses a moisture-proof toner cartridge toner cartridge with high sealing performance, which relates to the technical field of toner cartridges and comprises a toner cartridge body, a cartridge body is arranged on the toner cartridge body, a toner groove is arranged in the cartridge body, a sliding groove is arranged on the surface of the inner wall of an opening of the toner groove, a notch is arranged in the middle of the sliding groove, and the toner cartridge body is arranged in the notch. A box cover assembly is arranged at the front end of the box body, a penetrating hole is formed in the side face of the box body, four first inserting grooves are evenly distributed around an opening of the penetrating hole, and a moisture-proof assembly is arranged at the penetrating hole. According to the utility model, through the box cover assembly, the carbon powder groove can be conveniently and rapidly filled with carbon powder while the sealing performance is ensured, through the moisture-proof assembly arranged on the side surface of the box body, an operator can conveniently replace a drying agent in the moisture-proof assembly and clean the air holes, and the moisture-proof effect is ensured.

The present invention provides a novel polyurethane adhesive, and relates to the technical field of adhesives, the novel polyurethane adhesive comprises a component A and a component B. The component A comprises the following components by weight: 0.1-1 part of an MOFs polyurethane composite catalyst; 1 to 3 parts of polyether polyol; 30 to 40 parts of castor oil; 1-5 parts of a drying agent; 0.1 to 1 part of fumed silica; 60 to 65 parts of filler; 0.1-1 part of a wetting dispersant; and the component B is polyisocyanate. According to the polyurethane adhesive provided by the invention, the efficient polyurethane organic metal catalyst is packaged by utilizing the MOFs pore confinement principle, so that the catalyst can be stabilized in the initial stage to control the opening time, and efficient release and activity enhancement of the catalyst can be realized in the later stage, thereby achieving the purpose of regulating and controlling the reaction activity of the catalyst; the rapid and controllable curing and bonding effects of the polyurethane adhesive are further improved.