247 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 discloses a donor heart preservation method based on a crystal cardioplegic solution (CC solution) and a UW solution and application of the donor heart preservation method, and belongs to the field of biomedical engineering. The method comprises the following steps: (a) preparing CC liquid; (b) perfusing CC liquid through the aorta at the pressure of 150mmHg for 3-5 minutes to cause cardiac arrest; (c) taking out the heart, and performing secondary perfusion with 2000ml of 4 DEG C UW solution for 8-12 minutes; and (d) immersing the heart into a UW solution for cold preservation, wherein the cold ischemia time is less than or equal to 8 hours. In combination with a CC liquid perfusion step, the protection effect of the cold preservation liquid is remarkably improved by reducing the metabolic rate of cardiac cells; through double perfusion of CC liquid and UW liquid, optimization of metabolic balance and effective inhibition of inflammatory response are realized in the cold storage process of the heart; the invention has the functions of prolonging cold ischemia time and keeping heart cells, and provides a new technical means for long-time cold preservation.

The invention discloses a biological sample low-temperature preservation box, and particularly relates to the technical field of DNA sample preservation, the biological sample low-temperature preservation box comprises a box body and a first box door, the first box door is movably connected with the box body through a hinge, a touch screen, a first camera and a fingerprint lock are fixedly installed at the top end of the box body, and a second camera is fixedly installed on the front side of the box body; a semiconductor refrigerator is fixedly installed in the box body, a second box door is movably arranged on the rear side of the first box door, and the second box door is movably connected with the front side of the box body through a hinge. The threaded ice storage barrel is rotated to be far away from the box body, then ice blocks are placed in the threaded ice storage barrel, finally the threaded ice storage barrel is installed and fixed, auxiliary refrigeration is conducted on the interior of the box body, and meanwhile, along with gradual melting of the ice blocks, generated water enters the water storage barrel through the guide pipe; the one-way valve can prevent water in the water storage barrel from flowing back into the threaded ice storage barrel, the structure is simple, and auxiliary refrigeration can be conveniently carried out on the interior of the box body.

The invention belongs to the technical field of strain recovery, and discloses an edible fungus strain low-temperature preservation and rapid recovery device which comprises a shell, one end of the shell is movably connected with a storage cover plate, one end of the shell is movably connected with a heating cover plate, the shell is sleeved with a condensation mechanism, and a preservation mechanism is arranged in the shell. A second magnetic block is installed at the top end of the shell, a recovery mechanism is installed at the top end of the shell, a heat insulation plate is fixed in the shell, and through cooperation of a first connecting rod, a heat insulation baffle, a torsional spring and other structures, when the device pushes the second magnetic block to move a storage box, the storage box extrudes the heat insulation baffle, and the heat insulation baffle rotates upwards; and after the storage box enters the recovery area from the low-temperature storage area, the torsional spring resets the heat insulation baffle, and then the low-temperature storage area and the recovery area are isolated again, so that the device is conveniently divided into the low-temperature storage area and the recovery area, and the strains needing to be recovered are rapidly recovered and do not need to be taken out.

The invention relates to the technical field of food preservation, in particular to a food preservation system and method, and the food preservation system comprises a detection assembly, a gas transmission assembly and a plurality of preservation cavities. The fresh-keeping cavity is provided with an air inlet valve, an air outlet valve, a temperature sensor and a circulating refrigeration component; the detection assembly comprises a detection cavity provided with a detection inlet and a detection outlet, a gas extraction part communicated with the plurality of gas outlet valves and used for extracting gas to the detection inlet, and a gas analyzer mounted in the detection cavity, and the gas analyzer is used for detecting the content of oxygen, carbon dioxide and ethylene; the gas conveying assembly communicates with the multiple gas inlet valves and is used for outputting oxygen, carbon dioxide and nitrogen. By means of the fruit and vegetable cold storage fresh-keeping device, fruits and vegetables can be subjected to cold storage fresh-keeping in a partitioned mode, the gas temperature and the gas content of oxygen, carbon dioxide and ethylene in each fresh-keeping cavity are controlled in the fresh-keeping process, it is ensured that the content of the three gases is kept within a controllable range, and the fruit and vegetable cold storage fresh-keeping qualification rate and the cold chain storage economic benefit are improved.

The invention relates to the field of intelligent fresh-keeping equipment for meat, and provides an intelligent fresh-keeping box for crystallization-free frozen storage of meat. Comprising a box body and a control system, a storage space used for storing food is formed in the box body, and a touch type power interface and a multi-point temperature sensor are integrated on the box body; the storage space comprises a first side wall and a second side wall which are oppositely arranged, a first polar plate is arranged in the first side wall, a second polar plate is arranged in the second side wall, and a controllable electric field is generated between the first polar plate and the second polar plate; the control system is arranged on the box body, and the control system decides to output non-crystallization frozen storage and abnormal freezing early-warning ablation electric field parameters by inputting meat raw material information and environment temperature, a multi-mode feedback matched controllable electric field is formed in an electrode plate space, and ice nucleus formation is inhibited. The crystallization-free frozen storage intelligent fresh-keeping box for meat can be flexibly stacked, is suitable for multi-scene fresh-keeping requirements, breaks through the traditional freezing and cold storage temperature zone limit, and realizes intelligent fresh-keeping of freezing quality and cold preservation.

The invention discloses a two-component glue freezing anti-curing processor, and belongs to the technical field of anti-curing processing equipment, the two-component glue freezing anti-curing processor comprises a housing, the top of the housing is provided with a control panel, the top of the housing is detachably provided with a top cover, and the interior of the housing is provided with a cooling bin, a heating bin and a transfer mechanism; the transferring mechanism comprises an air cylinder, a lifting plate, a first motor, a rotating shaft and a connecting plate. Ultralow-temperature storage of the glue gun can be achieved through the arranged cooling bin, adhesive waste caused by blockage of the glue gun is avoided, automatic transfer of the glue gun can be achieved through the arranged transfer mechanism and the arranged bearing mechanism, the glue gun can be rapidly heated through the arranged heating bin and the arranged electromagnetic heating mechanism so that the glue gun can be directly used, and the production efficiency is improved. The air circulation speed in the heating bin and the cooling bin can be increased through the arranged stirring mechanism, so that heating and heat exchange are achieved, the stirring mechanism can be driven through the arranged electromagnetic driving mechanism under the condition that the sealing environment of the cooling bin and the heating bin is not damaged, and the heat preservation performance and the energy saving performance are improved.

The invention discloses a refrigeration house fruit and vegetable fresh-keeping method, a refrigeration house control device and cold chain transportation equipment. The method comprises the steps that the fruit and vegetable maturity of each storage area in the refrigeration house is detected; adjusting the temperature of the refrigeration house according to fruit and vegetable maturity; according to the fruit and vegetable maturity of each storage area, whether the fruits and vegetables in the storage area are transferred to a low-temperature storage area or not is judged; wherein a low-temperature storage area is arranged in the refrigeration house, and the temperature of the low-temperature storage area is lower than that of the refrigeration house. The temperature in the refrigeration house is adjusted by monitoring the maturity of fruits and vegetables in the refrigeration house in real time so as to inhibit ethylene increase, and dynamic regulation and control of ethylene concentration are achieved. And transferring the fruits and vegetables with higher maturity to a low-temperature storage area with lower temperature, and carrying out low-temperature cold storage. Therefore, fine regulation of fruit and vegetable quality is achieved, the best preservation environment of fruits and vegetables is kept, and fruit and vegetable quality loss is reduced. Efficient monitoring and processing of cold-chain fruits and vegetables are achieved, manual operation is reduced, and working efficiency is improved.

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 invention relates to the technical field of kits, and discloses a glioma gene biomarker detection kit, which comprises an inner box, an outer box, an aluminum box and a foam block, an upper cover hermetically covers the upper part of the inner box, the outer box is fixed on the outer ring of the inner box, the upper half part of the inner box is exposed out of the outer box, the upper part of the outer box is communicated with the outside, and the foam block is fixed on the aluminum box. Sealing paper is fixedly connected between the inner surface of the upper portion of the outer box and the outer surface of the inner box, an easy-to-tear opening is formed in the middle of the surface of the sealing paper, and a cooling plate is fixedly sleeved on the outer ring of the inner box on the inner side of the outer box. According to the technical scheme, the low-temperature heat preservation structure is arranged in the inner box, clear water in an aluminum box can be frozen when the reagent is stored in a refrigerator, and the purpose of low-temperature preservation of the reagent can be achieved for a long time after the reagent is taken out; in addition, a structure capable of assisting low-temperature storage by virtue of external ice cubes is also arranged between the outer box and the inner box, so that long-time low-temperature storage of the kit under the condition that the kit is taken out and is not used is facilitated.

The invention discloses ultralow-temperature preservation liquid for Sinilabeo decorus tungting sperms as well as a preparation method, a preservation method and application of the ultralow-temperature preservation liquid and belongs to the technical field of artificial breeding of Sinilabeo decorus tungting. The ultralow-temperature preservation liquid comprises a freezing diluent, an antifreeze agent glycol and an antioxidant, the antifreeze agent accounts for 8% of the volume of the ultralow-temperature preservation liquid, the antioxidant comprises reduced glutathione and alpha-lipoic acid, and the balance is the freezing diluent. According to the present invention, the formula compounding is different from the simple superposition of the traditional formula, the ratio and the combination mode of the components are precisely optimized, the combination has the synergistic effect, the resuscitation sperm activity is improved, the good oxidation resistance is provided, and the effect far better than the effect of other schemes is achieved. The method has remarkable advantages in efficient preservation of the sinilabeo decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus decorus

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.

The invention discloses a refrigeration system, a low-temperature preservation box, a refrigeration control method and device and a storage medium. The refrigerating system comprises a gas-liquid separator with an inlet connected to an outlet of a condenser, an air outlet connected to an inlet of a first heat exchange pipe of a condensation evaporator, a liquid outlet connected to an inlet of a second heat exchange pipe of the condensation evaporator through a first throttling element, and an outlet of the second heat exchange pipe connected to an air suction port of a compressor; the first heat exchange tube comprises at least two outlets, the outlets correspond to different heat exchange lengths, each outlet of the first heat exchange tube is connected to an inlet of the evaporator through a second throttling element, and an outlet of the evaporator is connected to an inlet of the second heat exchange tube; in the running process of the system, only one outlet of the first heat exchange pipe communicates with the second throttling element at any moment. The heat exchange length of the condensation evaporator can be adjusted preferentially, then the compressor is adjusted, the frequency increasing requirement of the compressor is reduced when cooling capacity output needs to be increased, and the frequency reducing amplitude of the compressor is prevented from being too large when cooling capacity output needs to be reduced.

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 utility model discloses a refrigeration cup which comprises a cup body and a cup cover connected to the cup body, the cup body is provided with a vacuum wall, the cup cover is provided with a vacuum layer, and a plurality of refrigeration rings are arranged in the cup body. The vacuum layer is arranged on the cup cover and can be matched with the vacuum layer on the cup body, a complete vacuum area is formed, the heat preservation and cold insulation effect can be greatly improved, the refrigeration ring is further arranged in the cup body, a low-temperature environment is achieved through the refrigeration ring, and low-temperature refrigeration can be kept for a long time; and the refrigeration ring can be independently placed in the refrigerator and can also be placed in the refrigerator together with the refrigeration cup, so that the use is convenient.

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 invention relates to the technical field of low-temperature preservation, in particular to a stem borer low-temperature preservation device and method.The device comprises a box body, fixing blocks are symmetrically and fixedly connected to the inner side wall of the box body, and a first groove and a second groove are formed in each fixing block. And overturning assemblies are arranged on the inner sides of the fixing blocks, and connecting rods are arranged between the adjacent overturning assemblies. A transmission assembly is arranged at the bottom of the overturning assembly on one side in the box body, a gear is arranged on the side, away from the overturning assembly, of the transmission assembly, the gear is rotationally connected with the fixing block and meshed with a rack, a driving piece is fixedly connected to the inner side wall of the box body, and an output shaft of the driving piece is coaxially and fixedly connected with the gear. The bottom of the rack is fixedly connected with a placing plate, and the bottom of the placing plate is provided with a refrigeration assembly and a lifting assembly. Through the gear, the rack, the placing plate and the telescopic rod, when stem borer pupae need to be stored at low temperature, the gear drives the rack to move, so that the placing plate is located at the bottom of the box body and is closer to a refrigerator, and the refrigerating effect of the stem borer pupae in the box body is improved.

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.