158 results about "Cold preservation" patented technology

A normothermic perfusion circuit can be used to perfuse a donor heart after transportation and before transplantation. The circuit can drain the organ storage container of cold preservation solution, perfuse the aorta of the heart with warm fluid to initiate heart activity, and then perfuse the left atrium of the heart with warm fluid to bolster heart activity and evaluate heart viability. Heart viability can be determined using parameters measured by sensors in the circuit.

A normothermic perfusion circuit can be used to perfuse a donor heart after transportation and before transplantation. The circuit can drain the organ storage container of cold preservation solution, perfuse the aorta of the heart with warm fluid to initiate heart activity, and then perfuse the left atrium of the heart with warm fluid to bolster heart activity and evaluate heart viability. Heart viability can be determined using parameters measured by sensors in the circuit.

The invention relates to the technical field of automatic control, and discloses a large-scale organ uniform controllable cooling method and system based on deep reinforcement learning and fuzzy control. The method comprises the following steps: constructing a high-precision temperature sensor array, and collecting multi-point temperature data on the surface and in the organ in real time; based on a biological heat transfer theory inverse problem model, reconstructing an organ three-dimensional temperature field in real time; a depth deterministic strategy gradient algorithm is adopted to optimize a fuzzy proportional-integral-differential controller. The depth deterministic strategy gradient algorithm takes minimization of organ internal temperature gradient as a primary optimization target, and parameters of a fuzzy PID controller are adjusted on line through interactive learning of an intelligent agent and a cooling environment, so that the power and the rate of a cooling module are accurately controlled. By means of the method, intelligent prediction and dynamic optimization of the cooling process can be achieved, the temperature gradient in the organ is smaller than 10 K / cm while it is guaranteed that the cooling rate reaches 15 K / min, and the success rate of low-temperature preservation of the large-scale organ and the activity of the large-scale organ after resuscitation are improved.

The application discloses an aerogel film triboelectric material suitable for full-humidity environment and a preparation method thereof, and belongs to the technical field of functional materials. The preparation method comprises the following technical steps: (1) taking a chitosan and polyvinyl alcohol solution, dissolving the chitosan and polyvinyl alcohol solution in water, uniformly mixing after mechanical stirring, then adding acetic acid, and obtaining a mixed solution through ultrasonic treatment; (2) performing directional freezing on the mixed solution to obtain a block-shaped gel; (3) performing low-temperature preservation on the block-shaped gel, and then performing freeze-drying to obtain an aerogel material; (4) performing cold pressing forming on the aerogel material, and then performing drying in an oven to obtain the aerogel film triboelectric material suitable for full-humidity environment. The material prepared by the application still has high output electric performance in an extremely high humidity environment (RH 99%), solves the problems that triboelectric materials are charge dissipation and electric performance attenuation under high humidity conditions, and provides a new idea for the construction and application of functional materials under full-humidity environment conditions.

The utility model discloses a double-layer vacuum cup which comprises an inner container and an outer shell which are integrally formed, the top of the inner container and the top of the outer shell are connected into a whole, a vacuum layer is formed between the inner container and the outer shell, a vacuum bottom layer is arranged at the bottom of the outer shell, and a vacuumizing position used for pumping air out of the vacuum layer is arranged on the vacuum bottom layer. The vacuum bottom layer is provided with a vacuum solder layer used for blocking the vacuumizing position. A plugging layer is further arranged at the bottom of the shell and located under the vacuum bottom layer; the problems that an existing screw cap type double-layer vacuum cup is limited in use convenience, and a common open cup cannot achieve heat preservation and cold preservation are solved. According to the open type double-layer vacuum cup, due to the fact that the vacuum layer is formed between the inner container and the outer shell, heat transfer is effectively reduced, liquid in the cup can be kept at the temperature for a long time, and the good taste can be maintained whether hot water or cold drink exists. Meanwhile, due to the open design, a user can conveniently clean, pour and observe the liquid, and the use convenience is improved.

The application relates to the adsorption and desorption technical field and discloses an adsorption and desorption device and a treatment method for treating light hydrocarbon VOCs waste gas, which comprises an inlet flame arrester, one end of the inlet flame arrester is fixed with a light hydrocarbon VOCs waste gas inlet, the other end of the inlet flame arrester is fixed with a plurality of air draft fans through Y-shaped pipelines, the air draft fans are fixed with adsorption and desorption devices through pipelines, a plurality of functional layers are arranged in the adsorption and desorption devices, the functional layers comprise adsorption and desorption layers, heat preservation and cold preservation layers and condensation and heat exchange layers, oil-water separators are fixed in the condensation and heat exchange layers of the adsorption and desorption devices through pipelines. Through the unique adsorption and desorption device structure design, the pipeline arrangement is greatly simplified, the device land occupation area is effectively reduced, the investment cost is reduced, the temperature control is guaranteed, the safety hidden danger caused by high temperature is avoided, and the problems of space and high investment cost are solved.

The utility model discloses a low-temperature preservation device for mixed solution, which comprises a device body and a box door, a square plate is embedded in the device body, a frame body is arranged on the surface of the square plate, a filter screen is embedded on the surface of the frame body, absorbent cotton is embedded in the frame body, and a fixing block on the surface of the frame body is connected with a fixing rod. The fixing rods are symmetrically distributed, and buckles are embedded in the device body. According to the low-temperature storage device for the mixed solution, a square plate is embedded in the device body, before the solution needs to be placed, a frame body is firstly installed on the surface of the square plate, the frame body is installed on the square plate in a sliding mode, at the moment, a fixing rod is clamped into a buckle, and then the frame body can be fixed; at the moment, the container filled with the mixed solution can be easily placed on the filter screen on the surface of the frame body, and the fused solution attached to the outer wall of the container can directly drop on the absorbent cotton through the filter screen, so that the liquid is effectively prevented from flowing around, and the container is relatively convenient to use.

1. The name of the design product: wine cabinet. 2. The use of the design product: the design product is used for multifunctional wine cabinet with direct drinking machine, which can be used for low-temperature preservation of food, articles and the like. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The utility model relates to a door lock system for low temperature preservation box and contain its low temperature preservation box belongs to low temperature preservation equipment technical field, that door lock system includes rotary handle lock, electromagnetic lock and controller, rotary handle lock includes lock core, handle installation subassembly, handle and position monitoring subassembly, handle includes rotary lock and handle part, and rotary lock is connected in handle installation subassembly to rotate between first position and second position, when rotary lock is located first position, rotary lock and lock core lock, when rotary lock is located second position, rotary lock and lock core are separated, position monitoring subassembly is used for monitoring whether rotary lock is located first position, controller and position monitoring subassembly and electromagnetic lock are connected communication respectively, to control electromagnetic lock to open the lock when monitoring that rotary lock is no longer located first position. The door lock system adopts rotary handle and electromagnetic lock linkage control, only needs to rotate handle when opening the door, and the operation is simple and convenient.

The invention relates to the field of organ transplantation in biomedical technology, and particularly discloses normal-temperature perfusion protection liquid for thoracoscopic surgery training as well as a preparation method and application of the normal-temperature perfusion protection liquid. The components of the perfusion protection liquid mainly cover sodium chloride, carbohydrates, adenosine and dexamethasone. The perfusion protection liquid has the advantages that on one hand, the components of the protection liquid are simple, complex components of a traditional perfusion protection liquid are abandoned, and the raw material obtaining and economic cost is greatly reduced; and on the other hand, the perfusion protection liquid gets rid of the limitation of low-temperature storage and can be stably stored in a normal-temperature environment. Compared with the prior art, the perfusion protection liquid provided by the invention not only has simple components, but also breaks the constraint of cold chain transportation and low-temperature storage, solves the problems of complex components and harsh storage conditions of the existing protection liquid, provides a more convenient and efficient solution for thoracoscopic surgery training and even wider medical practice, and has broad application prospects. The method has a wide application prospect and an extremely high practical value.

The invention discloses an integral assembly type operating room which comprises a bottom groove, an outer groove, a main beam, a wall plate, an inclined ceiling hanging groove, a filling plate hanging groove and an air supply ceiling. The bottom groove is connected with the outer grooves through locking mechanisms, the main beam is connected with all the outer grooves, and the wall plates are prefabricated wall plates and are connected with the outer grooves through connecting pieces. A control panel, a heat preservation cabinet, a heat preservation cabinet, an anesthesia cabinet, an instrument cabinet, a medicine cabinet, a film viewer, a gas terminal box, a digital display screen and a socket are integrated on the inner side of the wall plate, the locking mechanism comprises a pre-tightening assembly and a locking assembly, and the connecting piece comprises a T-shaped sliding block and a movable assembly. In addition, operation is quicker, a foundation is laid for later upgrading and reconstruction, quick hanging connection and position adjustment of the wallboards are achieved through the connecting pieces, and position adjustment can be achieved without disassembling the wallboards. The device is reasonable in structure, convenient to install, convenient for later transformation and suitable for rapid assembly requirements of modern hospital operating rooms.

The present disclosure provides methods for maintaining freeze-thaw stability of emulsion-based products during preservation at subfreezing temperature and subsequent warming. The method includes isochoric freezing of an emulsion-based product in a fluid using an isochoric chamber at a subfreezing temperature over a preservation time, where the emulsion-based product maintains freeze-thaw stability during the preservation at the subfreezing temperature. Devices for performing the methods are also provided.

The present application relates to the technical fields of tank construction, and particularly relates to a low-temperature ethylene full-capacity tank door hole welding plugging structure, which comprises a tank door hole, a hot angle protection wallboard, foam glass bricks and an outer tank wallboard, and E-shaped supports are welded on the outer walls on both sides of the tank door hole, the construction is from inside to outside, the construction efficiency and the construction safety factor are greatly improved under the premise of ensuring the cold preservation effect, the safety hidden danger in the welding process of the closed and narrow space is reduced, the problem that the cold preservation filling at the welding seam of the temporary door hole wallboard of the outer tank is not sufficient and the cold preservation is easily caused is effectively solved, and through the setting of the upper E-shaped support, the lower E-shaped support, the mounting disc and the T-shaped frame and other structures, the supporting effect can be provided when the hot angle protection wallboard and the outer tank wallboard are welded, the supporting position can be flexibly adjusted, the hot angle protection wallboard and the outer tank wallboard can be accurately welded on the tank door hole, and the convenience performance in the plugging process is improved.

1. The name of the design product: heat preservation box (popcorn machine). 2. The use of the design product: used for heat preservation or cold preservation of stored articles. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1. 5. Other circumstances that need to be explained: part A is transparent material.

The utility model relates to the technical field of nursing, and discloses a heat preservation type anesthesia nursing tray which comprises a tray structure, a protection component comprises an inverted-U-shaped sliding frame and L-shaped sliding blocks installed at the lower ends of the two sides of the inner wall of the inverted-U-shaped sliding frame, the L-shaped sliding blocks are installed in L-shaped sliding grooves in a sliding mode, an inverted-U-shaped inserting frame is installed on one side of the inverted-U-shaped sliding frame and inserted into the inverted-U-shaped grooves, and the inverted-U-shaped inserting frame is connected with the inverted-U-shaped sliding frame. An inner bottom strip is installed at the bottom end of the interior of a frame groove, a movable disc is installed in the frame groove, cold energy emitted by ice cubes is absorbed by the movable disc, anesthesia tools are placed in the movable disc, the cold energy of the ice cubes conducts low-temperature storage on medicaments, when an inverted-U-shaped inserting frame is inserted into an inverted-U-shaped groove, rubber pads located on the two sides of an inserting hole clamp an L-shaped inserting rod, and the medicament is stored in the inverted-U-shaped groove. And as the transverse outer frame, the side plates and the protective components are made of heat insulation reflecting materials, the cold energy emitted by the ice blocks is blocked, and the situation that the cold energy is dissipated too fast, and the use effect of the medicament is affected is avoided.

The utility model relates to the field of fixing agent storage boxes, and discloses a fixing agent storage box with a refrigeration function, which is used for solving the technical problems that in the prior art, when a user goes out with fixing agents, the fixing agents need to be prevented from being in contact with one another, and meanwhile low-temperature storage is needed, the fixing agent storage box comprises a box body and a box cover, and two storage bins and a refrigeration bin are arranged in the box body. The storage bins are cylindrical, the refrigeration bin is located between the storage bins, a storage barrel is arranged in each storage bin, a plurality of storage areas are arranged in each storage barrel, a connecting screw is arranged at the top of each storage barrel, a cover door is arranged on the box cover, a rotating wheel is arranged on the box cover, and a connecting sleeve is arranged at the bottom of each rotating wheel. And the connecting screw rod can be connected with the connecting sleeve.

The present application relates to the technical fields of pipeline heat preservation, and discloses a small device pipeline supercritical foaming heat preservation and cold preservation shell and a preparation method thereof, which comprises a heat preservation main body, the heat preservation main body is wrapped outside the pipeline main body, and the heat preservation main body is matched with the pipeline main body; a shell main body, the shell main body is wrapped outside the heat preservation main body, the shell main body is matched with the heat preservation main body, the shell main body comprises a horizontal section and a bending section, and the horizontal section and the bending section are respectively arranged at the straight pipe of the pipeline main body and the bending part correspondingly. The combination design of the supercritical foaming heat preservation structure and the modular metal shell is matched with the matched precision preparation process, and the heat preservation and cold preservation performance, the space adaptability, the installation convenience and the operation reliability are all improved significantly.

The invention relates to the technical field of organ preservation, in particular to an isolated organ preservation device and a preservation method.The isolated organ preservation device comprises a placement frame, a plurality of placement modules are arranged on the inner side face of the placement frame, each placement module comprises a placement box, three placement cavities are formed in the side face of each placement box, and communicating grooves are formed in the tops of the inner side faces of the placement cavities; and a storage module is arranged in the placement cavity, and the top of the inner side face of the placement cavity is slidably connected with a blocking frame corresponding to the communicating groove. According to the device, the top of the inner side face of each placement cavity is slidably connected with a blocking frame, when organs need to be taken out, a first cover plate and the blocking frames can move downwards, the blocking frames move to the bottoms of communicating grooves, and cold air in the communicating grooves can penetrate through the tops of the blocking frames to flow into the next placement cavity at the moment; the device does not affect the interiors of other placement cavities, so that organs in other placement cavities can be continuously preserved at low temperature, the organ function protection effect can be enhanced, and organ preservation research is facilitated.

The utility model provides a low-temperature preservation box with a good heat preservation effect, and relates to the field of low-temperature preservation boxes. The low-temperature preservation box with the good heat preservation effect comprises a box body and a box door arranged on the front side of the box body, and a plurality of storage assemblies are adjacently arranged in the box body; the storage assembly comprises a placing frame fixedly connected to the rear wall of the box body, two baffles slidably connected to the top wall and the bottom wall of the placing frame, two connecting plates symmetrically and fixedly connected between the baffles, a placing plate fixedly connected between the connecting plates and a cover plate fixedly connected to the end of the placing plate. A plurality of circulation holes are formed in the sides, close to the front side of the box body, in the containing frames at equal intervals, the top side of the containing frame located at the topmost portion is of a closed structure, and a refrigeration assembly is arranged in the box body and located below the containing frame at the bottommost portion. According to the low-temperature preservation box with the good heat preservation effect, loss of cold air can be reduced, the low-temperature environment in the box can be kept easily, the energy efficiency of the low-temperature preservation box can be improved easily, and energy consumption is reduced.

The utility model relates to liquefied natural gas (LNG) long distance transportation and cold energy utilization technical field, concretely is a kind of LNG long distance transportation system based on composite heat insulation and dynamic cold preservation, LNG long distance transportation system equipment include: upstream LNG receiving station storage tank, LNG long distance transportation pipeline, downstream LNG receiving station storage tank, propane-liquid nitrogen exchanger, open rack type gasifier, LNG comes out from upstream receiving station storage tank, enters downstream receiving storage tank by long distance transportation pipeline, after propane-liquid nitrogen exchanger and open rack type gasifier temperature rising gasification again, enter natural gas pipe network, for downstream user use, the utility model utilizes propane-liquid nitrogen cold screen to carry out active intervention type heat preservation, block most of the heat entering inner tube, to reduce the gasification of LNG in inner tube, improve economic benefit.

The application discloses a kind of high-efficiency low temperature, low noble metal load multi-element bacteriostatic material for organ static cold preservation and its preparation method and application, belong to biomedical materials and organ transplantation technical field.The bacteriostatic material is loaded on TiO2-MO x Low noble metal multi-element bacteriostatic system on composite carrier, general formula is Ag-N / TiO2-MO x Wherein N is one of Cu, Co, Mn, MO x It is one of CeO2, WO3, MoO3.The bacteriostatic efficiency of the material in the present application is greater than 90% in the low temperature interval of 0-40 DEG C to gram-positive bacteria and gram-negative bacteria, effectively overcome the problems of high cost of existing Ag bacteriostatic material and insufficient activity and stability of non-noble metal material, with high bacteriostatic activity, excellent anti-poisoning capacity and low cost advantage, especially suitable for static cold preservation of organ in vitro in organ transplantation, can significantly inhibit bacterial growth, prolong the organ survival time.

The invention relates to the technical field of refrigeration equipment, in particular to a refrigeration device and water treatment equipment. The refrigerating device comprises an ice storage box, an ice making assembly and a water collecting piece. The ice-making assembly comprises an ice-making piece and an ice-making box, the ice-making box is used for containing ice-making water, the ice-making piece comprises a cold insulation part and a refrigeration part, the refrigeration part is at least partially located in the ice-making box and used for making contact with the ice-making water, the cold insulation part is at least partially located in the ice storage area, and the ice-making piece is used for refrigeration; the water collecting piece is arranged in the ice storage box and provided with a water collecting groove, and at least part of the water collecting groove is located on the lower side of the cold insulation part and used for receiving water drops. According to the refrigerating device, the ice making piece comprises the cold insulation part at least partially located in the ice storage area, the cold insulation part covers the ice storage area at low temperature in the refrigerating process of the ice making piece, the heat exchange rate of ice blocks in the ice storage area can be reduced, and therefore the cold insulation condition of the ice blocks in the storage process is improved, and the refrigerating efficiency is improved. And the melting phenomenon caused by the influence of environment temperature is reduced.

The utility model relates to a rotary locking handle and a low-temperature storage box comprising the same, and belongs to the technical field of low-temperature equipment. The rotary locking handle comprises a lock cylinder assembly, a handle mounting assembly and a handle assembly, the lock cylinder assembly comprises a lock cylinder fixing seat and a lock cylinder column. The handle mounting assembly comprises a rotating shaft fixing seat and a rotating shaft; the handle assembly comprises a rotary locking part and a handle part; the rotary locking part is provided with a containing groove, a shaft sleeve connected with the rotary shaft in a sleeving mode is eccentrically arranged in the containing groove, the rotary locking part rotates between a first position and a second position, and the containing groove is provided with an opening; when the rotary locking part is located at the first position, the groove wall of the containing groove abuts against and is locked with the lock cylinder column. When the rotary locking part is located at the second position, the lock cylinder column is located at the opening; a matching face matched with the lock cylinder column is formed on the groove wall of the containing groove, the matching face comprises a plurality of arc column faces connected in sequence, and the radiuses of the arc column faces from the opening position to the locking position are sequentially reduced. The rotary locking handle can ensure locking and is high in reliability.

The application discloses a detection equipment for low-temperature liquid storage tank pearlite sinking and a detection method thereof. The equipment comprises a storage tank, an opening I is formed in the top of the storage tank, an air inlet pipeline is arranged in the storage tank and is mounted in the opening I, a gas injection mechanism is mounted at the input end of the air inlet pipeline, a horizontal mechanism is fixedly connected to the output end of the air inlet pipeline, and a bordering mechanism is arranged at the output end of the horizontal mechanism. Compared with the traditional detection method, the pearlite filling opening does not need to be opened, the flammable and explosive medium is prevented from being discharged into the atmosphere, the air and moisture are prevented from entering the tank, the cost is reduced, the safety guarantee is improved, the driving force generated by the nitrogen gas with pressure is utilized to transport the pearlite above the lowest height line of the pearlite to the outside, if the overflowed pearlite is detected at the outlet, the height of the pearlite meets the cold preservation height of the storage tank, otherwise, the pearlite needs to be filled.

The invention relates to the field of cryogenic liquid storage equipment, in particular to an improved low-temperature double-layer vacuum storage tank which comprises an inner tank and an outer tank which are fixedly connected through a supporting structure, an anti-radiation shielding layer is arranged between the inner tank and the outer tank, and the anti-radiation shielding layer is fixed to the supporting structure. A first vacuum interlayer is arranged between the inner tank and the anti-radiation shielding layer, a second vacuum interlayer is formed between the outer tank and the anti-radiation shielding layer, and a heat insulation material layer is arranged on the surface, located on one side of the second vacuum interlayer, of the anti-radiation shielding layer. The supporting structure is a low-heat-conduction hollow cylinder made of epoxy glass fiber reinforced plastic, the inner tank and the outer tank are connected, the anti-radiation shielding layer is fixed through a hoop, structure sharing is achieved, and a solid heat conduction path is not additionally added. Compared with a traditional double-layer tank, the heat leakage flux can be reduced by about 57.3%, the cold insulation time of ultralow-temperature media such as liquid hydrogen and liquid helium is remarkably prolonged, and meanwhile the storage capacity and the structural stability of the storage tank are kept unchanged.

The utility model discloses sampling storage equipment for pharmaceutical analysis, which comprises a low-temperature storage box main body and an upper cover, the top of the low-temperature storage box main body is provided with the upper cover, the center of the top of the upper cover is provided with a control seat, and the top of the control seat is provided with a display screen for displaying the internal temperature of the low-temperature storage box main body. One side of the control seat is provided with a power supply socket used for being connected with an external power supply; and four groups of opposite mounting seats are fixedly mounted at two ends of the center of the bottom of the upper cover. According to the low-temperature preservation box, the low-temperature preservation box body, the upper cover, the control base, the display screen, the power socket, the mounting base, the ultraviolet disinfection lamp, the lens and other parts are arranged and used in cooperation, so that the surfaces of glass test tubes for storing medicine in the low-temperature preservation box body are conveniently disinfected and sterilized, bacterium breeding is reduced, and pollution to medicine samples is reduced; and meanwhile, through cooperation of a lens and an ultraviolet disinfection lamp, the interior of the low-temperature preservation box body can be disinfected and sterilized comprehensively.

The utility model discloses a cold storage box fixing assembly for a refrigeration house and the refrigeration house comprising the cold storage box fixing assembly. The fixing assembly comprises a cold storage box serial connection piece and a hoisting piece. The cold storage box serial connection piece comprises two serial connection rods, the hoisting piece is a long-rod bolt, and the screw rod end of the long-rod bolt can penetrate through the serial connection rods from bottom to top and is fixed to a top plate of the refrigeration house. Or the hoisting piece is an external member consisting of a hook and a hoisting line, the hook is fixed on the top plate of the refrigeration house, one end of the hoisting line is fixedly connected with the hook, and the other end is fixedly connected with the tandem rod. The refrigeration house comprises a goods shelf, the goods shelf is composed of stand columns and multiple layers of cross beams, and a plurality of cold storage units are arranged between every two opposite cross beams located on the same layer. The phase change cold storage boxes are arranged on the top plate of the refrigeration house through the fixing assemblies, and the space utilization rate of the refrigeration house is effectively increased. The phase-change cold storage box can store cold energy and release the cold energy at a proper time, so that the temperature in the refrigeration house is stable, and the cold insulation effect of the refrigeration house is remarkably enhanced.

The utility model discloses a GEn nuclease reagent split charging and storing device which comprises a box body, a plurality of placing partition cavities formed in the front face of the box body and a plurality of L-shaped sliding plates connected to the inner sides of the placing partition cavities in a sliding mode. A reagent rack for placing a reagent is fixed on one side, facing the interior of the placing partition cavity, of the L-shaped sliding plate; different reagents are placed in the box body with a plurality of independent placement partition cavities, and a stable and uniform low-temperature storage environment is provided for the reagents in each placement partition cavity under the cooperation of a semiconductor chilling plate, a micro water pump, a heat exchange block, a heat exchange runner, a liquid pumping pipe, a liquid feeding pipe, an air inlet, an air inlet groove and an air supply fan; the low-temperature environment required by the reagent is kept, and meanwhile, the problem of severe temperature fluctuation caused by frequent taking and placing in traditional refrigerator type preservation is also avoided, so that the preservation and use effects are improved, the reagent is convenient to subpackage and store in a classified manner, and the flexibility of reagent management is improved.

The utility model discloses a folding type cold-chain logistics packaging box which comprises a bottom plate, four corners of the top of the bottom plate are fixedly connected with first aluminum foil composite cloth, the top of the first aluminum foil composite cloth is fixedly connected with a connecting frame, four corners of the top of the connecting frame are fixedly connected with second aluminum foil composite cloth, and the top of the second aluminum foil composite cloth is fixedly connected with a main body frame. A cover plate is hinged to the top of the body frame through a hinge, a supporting assembly is arranged at the bottom of the body frame, and an inserting mechanism is arranged in the bottom plate. According to the packaging box, reliable supporting can be provided for the packaging box through the supporting assembly, rapid and stable connection of the supporting assembly and the box body can be achieved through the inserting-connecting mechanism, the problem that packaging boxes in the market are generally inconvenient to fold in the actual use process is solved, and therefore the packaging boxes occupy a large amount of space in the idle storage stage; and for goods needing to be stored at low temperature, the heat preservation performance of the packaging box is poor, and the packaging box has the advantage of being convenient to fold.