3298results about "Packaging under vacuum/special atmosphere" patented technology

A household vacuum sealer contains: a base, a lid, and a hot-melt sealing element. The base includes a receiving chamber for accommodating a control circuit and a vacuum pump. The base also includes a vacuuming chamber and an accommodation chamber. The hot-melt sealing element includes a holder, a mica slice, a laminated heating layer, the insulated composite layer, and a protective cap. The insulated composite layer includes multiple insulated tape layers. The laminated heating layer includes a high-temperature resistance tapes made of polyimide, a metal resistance tape, two electrical connection films, and two alternating current (AC) electrodes. The mica slice is parallelly fixed on a top of the holder. The laminated heating layer includes the two electrical connections. Furthermore, the protective cap is covered on the insulated composite layer and includes a hollowly elongated zone.

The utility model discloses an automatic vacuumizing device for a vacuumizing container, and relates to the technical field of vacuumizing containers. The device comprises an upper housing, a lower housing, a control panel mounted in the lower housing, and a vacuumizing pump, an electromagnetic valve and a battery which are connected with a singlechip on the control panel, the device consists of a lower housing with an inverted n-shaped section, an upper housing with an inverted U-shaped section, a vacuum pump, an electromagnetic valve and a battery, wherein the vacuum pump, the electromagnetic valve and the battery are arranged in the lower housing; the connecting ring with the scraping ring is attached to the flat notch in the top of the bottle body, so that the bottle body structure with the flat notch can be used after being tightly attached, and the bottle cover is suitable for being used in cooperation with the bottle body with the smaller size and the smaller upper opening hole diameter. And through clamping cooperation of the first clamping structures and the second clamping structures, the whole automatic vacuumizing device does not need to be locked and fixed through bolts, can be efficiently assembled and is good in stability.

The embodiment of the utility model belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the airflow circulation assembly comprises a front cover, a first channel is formed in the side, away from the storage cavity, of the front cover, and a second channel is formed in the side, close to the storage cavity, of the front cover. The refrigeration assembly is located in the first channel and used for reducing the temperature of airflow flowing through the first channel. The humidifying assembly communicates with the second channel and is used for improving the humidity of airflow flowing through the second channel. According to the storage box provided by some embodiments of the invention, in the airflow circulation between the storage cavity and the airflow circulation assembly, the humidification airflow does not flow through the refrigeration assembly, the refrigeration assembly cannot absorb the moisture of the humidified airflow, then it can be guaranteed that the humidification assembly accurately adjusts the airflow humidity, the humidity adjusting precision of the storage box can be improved, and the storage box is more convenient to use. And storage of articles is facilitated.

The embodiment of the utility model belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the airflow circulation assembly comprises a rear cover, a first channel is formed in the side, away from the storage cavity, of the rear cover, and the rear cover separates the storage cavity from the first channel. The refrigeration assembly is located in the first channel and used for reducing the temperature of airflow flowing through the first channel. According to the storage box provided by the embodiment of the invention, in airflow circulation between the storage cavity and the airflow circulation assembly, the storage cavity and the refrigeration assembly are separated through the rear cover, the direct distance between the refrigeration assembly and the storage cavity is small, and the rear cover can reduce the direct influence of the refrigeration assembly on the interior of the storage cavity; and therefore, the refrigeration assembly is prevented from influencing the temperature uniformity of the storage cavity, and storage of articles is facilitated.

The invention relates to the technical field of packaging equipment, and particularly discloses fresh corn automatic vacuum packaging equipment which comprises a machine body, a rotating disc bag feeding system and a rotating disc vacuum system, and the rotating disc bag feeding system and the rotating disc vacuum system are arranged at the top of the machine body. And a clamping mechanism, a tightening mechanism, a synchronous driving mechanism and a heat sealing mechanism are arranged in the vacuum box. The effects of multi-point fixing of a packaging bag, automatic centering, deviation rectifying and clamping of corn and further front-back holding and fixing are achieved in sequence through cooperation of air pressure generated after the active air bag is extruded and hydraulic oil, the whole process is completed in the vacuum cover closing process, extra time does not need to be consumed, and therefore on the premise that the vacuum packaging efficiency is the same, the labor intensity of workers is lowered. The vacuum packaging quality of the corn is greatly improved, the packaging reject ratio is reduced, and the whole production cycle of the fresh corn does not need to be prolonged.

The embodiment of the utility model belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the air flow circulation assembly comprises a decorative plate, and the decorative plate is provided with an air outlet communicating with the upper portion of the storage cavity and an output port of the air mixing channel, a first air return port communicating with the lower portion of the storage cavity and an input port of the first channel, and a second air return port communicating with the lower portion of the storage cavity and an input port of the second channel; the first return air inlet and the second return air inlet are respectively communicated with different positions of the lower part of the storage cavity. According to the storage box provided by the embodiment of the invention, in airflow circulation between the storage cavity and the airflow circulation assembly, airflow entering and outputting do not conflict, airflow short circuit is avoided, the airflow flowing speed is increased, the airflow temperature and humidity changing speed is increased, and the rapid adjustment requirement of a customer is met.

The invention provides a powder oxygen-free inert gas environment filling line and a filling method.The filling line comprises a conveying chain, a transfer bin, a working bin, a buffering bin, a filling device, a vacuumizing device, an inert gas inflation device and a cap screwing device, and the conveying chain sequentially penetrates through the transfer bin, the working bin and the buffering bin; a filling opening of the filling device and the cap screwing end of the cap screwing device are both located in the working bin, sealing doors are arranged at the end, away from the working bin, of the transfer bin, the position between the transfer bin and the working bin, the position between the working bin and the buffering bin and the end, away from the working bin, of the buffering bin correspondingly, and the vacuumizing device communicates with the transfer bin, the working bin and the buffering bin in sequence through a first pipeline. The inert gas charging device is sequentially communicated with the transfer bin, the working bin and the surge bin through a second pipeline, oxygen detection sensors and gas pressure sensors are arranged in the transfer bin, the working bin and the surge bin, and the filling line can ensure that the filling process is in an oxygen-free environment, so that the quality of powder products is ensured.

The present invention provides a vacuum air extraction device with high practicality and reliability. The vacuum air extraction device with high practicality and reliability includes an air extraction host machine and a vacuum sucker in matching connection to a lower part of the air extraction host machine, where a control circuit board, a vacuum air pump and a decompression valve are arranged in the air extraction host machine; an annular groove body is formed in one end connected to the air extraction host machine, of the vacuum sucker; a spongy body for filtering air is arranged in the annular groove body; air extracted through the air extraction host machine passes through the air circulation channel to enter the annular groove body, is filtered at the spongy body, and then flows into the vacuum air pump.

A storage container assembly set is disclosed for use with the safe storage and containment of food items in different environments. The storage container assembly set may include a plurality of storage containers that can hold the food items. The plurality of storage containers may have a storage container base and a storage container lid with optional components that may also be used with the assembled storage containers. In the assembled configuration, the storage container assembly set may include a tray to hold the plurality of storage containers. The tray may also first hold a plurality of cooling inserts that can contact the plurality of storage containers to keep the plurality of storage containers cool in higher temperature environments to help maintain the stability and freshness of the food items contained within the plurality of storage containers.

The invention relates to a sterilization type oxygen absorbent drying, mixing and vacuum packaging integrated system, and relates to the technical field of oxygen absorption master batch production, the sterilization type oxygen absorbent drying, mixing and vacuum packaging integrated system comprises two groups of dryers, a mixing machine, a vacuum generation system, an oil bath circulation system and a nitrogen supply system, the two groups of dryers comprise a first dryer and a second dryer; the dryer comprises a barrel, a swing driving mechanism and two swing shafts, the barrel comprises an inner shell and an outer shell, a heating cavity is formed between the inner shell and the outer shell, each swing shaft is provided with an oil inlet channel and an oil return channel, the outer shell is provided with a guide part in the heating cavity, and a heating channel allowing medium oil to flow is formed among the guide part, the inner shell and the outer shell. The heating channel forms a baffling section at the bottom of the inner shell, and medium oil can flow into the oil return channel along the heating channel and the baffling section. The medium oil flows from bottom to top, so that the medium oil with low temperature and high density is effectively prevented from being accumulated at the bottom of the barrel, materials are dried more uniformly by the medium oil, and the production efficiency of the oxygen absorbent is improved.

The invention discloses a multifunctional sample test tube preservation box for water quality detection, and belongs to the technical field of preservation boxes, the multifunctional sample test tube preservation box comprises a box body and a box cover which are fixedly connected through a lock catch in a sealed mode, a partition plate is fixedly installed on the inner side of the box body and the inner side of the box cover, and a balance weight ball is movably installed in the center of the partition plate; the upper end of the balance weight ball is elastically and telescopically connected with a center column, a bracket is fixedly installed on the outer side of the lower portion of the center column, meanwhile, supporting adsorption assemblies are evenly arranged on the bracket, a positioning frame is fixedly installed on the outer side of the upper portion of the center column, limiting rings are evenly arranged on the positioning frame, and an air conveying assembly is arranged below the partition plate. According to the multifunctional sample test tube storage box for water quality detection, test tubes can be buffered and adjusted in a self-adaptive mode, the inner side of the box body can be automatically pressurized in the adjusting process, it is avoided that sealing plugs at the upper ends of the test tubes are loosened and consequently samples are poured, automatic oscillation can be conducted when the test tubes are taken, and the follow-up detection precision is ensured.

A delivery tray for medical items includes a plurality of receiving spaces each intended to receive a single medical item. The lower face of the tray has a plurality of caps, the caps being arranged and sized such that when the tray is stacked on a second identical tray, the caps of the tray are able to close the receiving spaces of the second tray. A packaging system comprises a vessel having an opening, a bottom and a peripheral wall. The system also includes a stack formed by a plurality of trays, and a porous lid that is sealed on the upper edge of the peripheral wall of the vessel (10) to close it. The disclosure also relates to a packaging method, in particular, comprising a vacuumization step.

The utility model discloses an uncovering device of a transverse packing machine, which is provided with a rotating body, a rotating shaft of the rotating body is transversely arranged; the vacuum mechanism is arranged on the periphery of the rotating body, and the vacuum mechanism can vacuumize the packaging bag; in the rotating process of the rotating body, the cover opening mechanism can open or close a cover body of the vacuum mechanism, the number of the vacuum chambers can be increased in the length direction of the rotating shaft by transversely arranging the rotating shaft, the number of the vacuum chambers is greatly increased, the production efficiency is improved, and meanwhile automatic opening or closing of the cover body is achieved.

The vacuum bottle comprises an outer bottle body and the inner bottle body, an opening is formed in the bottom of the outer bottle body, a rotating sleeve is arranged in the outer bottle body, an M-shaped sliding groove is formed in the side wall of the rotating sleeve, and a plurality of sliding groove inlets and sliding groove outlets are formed in the lower edge of the sliding groove; a protrusion is arranged on the side wall of a bottle opening of the inner bottle and can enter the sliding groove from the sliding groove inlet. According to the vacuum bottle with the replaceable inner bottle, the inner bottle can be rapidly and conveniently replaced, environmental protection is facilitated, and the customer experience is improved. In addition, according to the vacuum bottle with the replaceable inner bottle, locking of the head cap and the inner bottle can be achieved, leakage of the cosmetics in the transportation process after the cosmetics are loaded or in the travel process of a user is prevented, and the cleanliness of cosmetic packages is improved.

A cover device is provided and includes a first body, a second body, a resilient component, a seat assembly, a check valve and a filtering component. The second body is removably attached on the first body and resiliently deformable. The resilient component is disposed on the first body. The seat assembly is movable relative to the first body. The seat assembly includes a first seat and a second seat. The first seat is removably engaged with the resilient component and configured to be connected to a vacuum device. The second seat is removably engaged with the first seat. The check valve is disposed on the second seat. The filtering component is disposed between the second seat and the second body.

The present disclosure provides systems and methods for storing, transporting, and using hydrogen. In some embodiments, the method may comprise (a) storing hydrogen fuel in one or more fuel storage modules; (b) transporting the one or more fuel storage modules to a vehicle fueling site, wherein one or more hydrogen fuel compatible vehicles are located at or near the vehicle fueling site; (c) loading the one or more fuel storage modules into the one or more hydrogen fuel compatible vehicles, wherein the one or more fuel storage modules are configured to be releasably coupled to the one or more hydrogen fuel compatible vehicles; and (d) decoupling the one or more fuel storage modules from the one or more hydrogen fuel compatible vehicles after the one or more fuel storage modules are depleted or partially depleted.

The invention discloses a water quality monitoring device for environmental protection monitoring, and relates to the field of sampling boats, the water quality monitoring device comprises a hull and three sample storage tanks, the hull is internally provided with a power box, one side of the hull away from the power box is provided with a water pump, one side of the power box is provided with a bottom plate, the upper surface of the bottom plate is uniformly provided with three moving grooves, and the bottom plate is provided with a processing mechanism; the processing mechanism is used for conducting sealing and low-temperature storage on the sample storage tanks, the processing mechanism is composed of an injection assembly, three sealing assemblies and a low-temperature storage assembly, each sealing assembly is arranged on the bottom plate and matched with the fixed arc plate, and each sample storage tank is placed in the corresponding sealing assembly; the injection assembly is used for injecting a sucked sample into the sample storage tank and sealing the sample storage tank through the sealing assembly, and the low-temperature storage assembly is used for cooling the sealed sample storage tank. According to the invention, the full sample storage tank can be sealed and stored, so that the sample is prevented from being influenced by external environments such as dust and gas exchange, and the purity and data accuracy of the sample are ensured.

The utility model discloses a manual vacuum-pumping structure and a sealing cover, and the manual vacuum-pumping structure comprises a valve seat installed on the outer wall of a sealing container, a valve seat provided with a connecting hole and a mounting groove, and an inner cavity of the sealing container, the connecting hole, the mounting groove and the outside of the sealing container are communicated in sequence; the valve plug is installed in a floating mode in the center line direction of the connecting hole so as to communicate or block the sealed container; the pressing cover is installed in the installation groove, an exhaust cavity is formed between the pressing cover and the valve plug, the pressing cover is provided with an annular sealing part, the annular sealing part is arranged around the exhaust cavity, and the peripheral wall of the annular sealing part abuts against the peripheral wall of the installation groove in a sealed mode; by pressing the pressing cover towards one side of the valve plug, the size of the exhaust cavity is reduced, and the annular sealing part is driven to elastically deform outwards, so that gas in the exhaust cavity is exhausted to the outside of the sealed container. Air in the sealed container is extracted in a manual pressing mode to generate a vacuum condition, the whole structure is simple, operation is convenient, and the use cost is low.

A Mason jar sealing device includes: a mounting shell, a connection assembly, and an air pumping-inputting assembly. The mounting shell or the connection assembly defines an air inlet. An end of the connection assembly is connected to the mounting shell, and the other end of the connection assembly is connected to the Mason jar body. When in use, a sealing cavity is formed between the connection assembly and the Mason jar body, and the opening of the Mason jar body is located in the sealing cavity. The air pumping-inputting assembly is mounted on the mounting shell, the air pumping-inputting assembly is communicated with the air inlet and the sealing cavity, the air pumping-inputting assembly is configured to extract air out of the Mason jar body to enable the jar lid to seal to the Mason jar body.

The invention relates to the technical field of vacuum machines, and particularly discloses a water-washable heating rod and a vacuum machine, the water-washable heating rod comprises a main body, the interior of the main body is provided with an accommodating cavity, the upper part of the main body is provided with a first opening, the lower part of the main body is provided with two conductive column holes, and the accommodating cavity is respectively communicated with the first opening and the two conductive column holes; the heating wire is mounted in the accommodating cavity; the upper cover covers the upper part of the main body, and the upper cover is provided with a second opening opposite to the first opening; the lower surface of the high-temperature adhesive tape wraps the heating wire and is used for sealing the first opening, and the upper surface of the high-temperature adhesive tape is used for sealing the second opening; the two sealing rings are mounted in the conductive column holes in a one-to-one correspondence manner; wherein the conductive column hole is used for installing a conductive column, and when the upper end of the conductive column penetrates through the sealing ring to be electrically connected with the heating wire, the containing cavity is in a sealed state. The heating rod capable of being washed and cleaned and the vacuum machine have the dismounting and sealing effects, so that cleaning and maintenance are convenient.

A gassing rail apparatus is provided to be used in a food packaging conveyor system. The gassing rail apparatus includes a rail top, a first and second gas port, an insert assembly located below the rail top, a gassing element located below the insert assembly, a rail bottom located below the gassing element, wherein the gas flowing through a slit in the insert assembly produces a high speed accelerated flow, and a flow of laminar gas is blocked by the rail bottom and forces the laminar gas flow laterally within the layer of gas resistant media of the gassing element with the effect of surrounding the accelerated gas exiting the gas distribution slot, wherein the accelerated gas tends to draw in laminar gas and not undesirable air, and the first gas source provides about 15-25% of the gas provided to the gassing rail apparatus and the second gas source provides about 75-85% of the gas provided to the gassing rail apparatus. In another embodiment, a single gas port is provided.

The utility model belongs to the technical field of stem cell storage, and particularly relates to a stem cell extraction and storage tank which comprises a tank body, first lifting plates are connected to the two sides of the interior of the tank body in a sliding mode, and a supporting plate is fixedly connected between the two first lifting plates. The utility model provides a stem cell extraction storage tank which solves the problems that although a storage tank in the prior art can stably clamp a stem cell storage test tube through cooperation of a spring and a clamping block to prevent the test tube from shaking, the test tube is inconvenient to place due to bounce of the spring in the device, and the test tube is not easy to shake. In the prior art, clamping blocks on the two sides cannot be controlled to be automatically opened and closed, and a sealing cover needs to be opened when stem cell storage test tubes are stored and taken, so that a cavity in a tank body is exposed in air, a large amount of liquid nitrogen is lost, the temperature in the tank body rapidly rises, the storage environment of stem cells is affected, and meanwhile resources are wasted. And the cost can not be saved.

A line having a food processing apparatus and a packaging machine between which a placement and transport apparatus is provided that has a plurality of tablet trays on which food products are placed and with which the food products are transported towards the packaging machine, the tablet trays move in a contact-free manner along a closed transport surface; a method for producing packaged food slices using the line, the food products are deposited onto the tablet trays and then transported towards the packaging machine; a method for cleaning the line, the tablet trays are lifted from the transport surface and the transport surface is cleaned with a cleaning liquid; and a method for cleaning the line, the tablet trays are removed from the transport surface and cleaned in a cleaning machine.

The utility model relates to a multifunctional body pasting machine which comprises a machine base, a lower die base and a vacuum cover, the vacuum cover is located above the lower die base, a die cavity used for containing a supporting box is formed in the lower die base, a guide rail is arranged on the machine base, the lower die base is arranged on the guide rail in a front-back sliding mode, and a first lifting power source is installed on the machine base. The first lifting power source can drive the vacuum cover to move up and down, vacuumizing holes are formed in the mold cavity and the vacuum cover, and the vacuumizing holes are communicated with the vacuum pump; the film sealing device is characterized in that a film sealing mechanism is installed on the vacuum cover and comprises a second lifting power source, a lifting plate, a heat sealing mold and an annular film cutter, the heat sealing mold and the annular film cutter are located below the lifting plate, and the annular film cutter is located on the periphery of the heat sealing mold; the second lifting power source is connected with the lifting plate, the annular film cutter is installed on the lifting plate, and the heat sealing mold is connected to the lifting plate through a limiting connecting rod in an up-down movable mode. The multifunctional body pasting machine not only can realize inner body pasting film sealing, but also can realize outer covering film sealing.

The present invention relates to a high-concentration, long-term cell preservation and transportation device at room temperature, comprising a first outer shell, a first inner shell arranged in the inner cavity of the first outer shell, a permeation hole penetrating the side wall of the first inner shell arranged on the side wall of the first inner shell, and a permeation membrane connected to the first inner shell arranged at the permeation hole. The high-concentration, long-term cell preservation and transportation device at room temperature of the present invention is suitable for long-distance, long-term transportation of high-concentration cell fluid through the arrangement of the first outer shell and the first inner shell, and the cell fluid is not easily contaminated.

The embodiment of the invention belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the airflow circulation assembly comprises a first guide structure and a second guide structure, and the first guide structure is used for receiving airflow input by the first channel and the second channel and changing the flow direction so that the airflow can be output after being mixed; the second guide structure is used for receiving the airflow output by the first guide structure and changing the flow direction so that the airflow can be output to the air mixing channel output port after being mixed. According to the storage box provided by some embodiments of the invention, a plurality of mixing processes are carried out in airflow circulation between the storage cavity and the airflow circulation assembly, so that the storage box has relatively high mixing efficiency, relatively high-precision temperature adjustment and humidity adjustment can be realized, errors are relatively small, storage conditions with constant physical parameters are favorably formed, and thus storage of articles is facilitated.

The utility model discloses a large-scale bag feeding type packaging machine, relates to the field of packaging equipment, and is used for solving the problems of deformation and displacement of a bag body and large occupied space of the equipment when heavy-weight materials (gt and 5kg) are packaged. The packaging machine comprises an indexing rotary table, an adjustable bearing supporting plate, a transferring device and a double-station vacuumizing sealing device. First bag clamping assemblies are evenly distributed on the edge of the indexing rotary disc, and a lifting bearing supporting plate is arranged below the first bag clamping assemblies to prevent bag bodies from drooping. The transfer device is used for accurately transferring the packaging bags through a first linear motion module and a composite clamping mechanism; the vacuumizing and sealing device adopts double vacuum cavities and a multi-directional movable sealing cover, and a bag clamping assembly, a bag supporting assembly and a heat sealing assembly are integrated in the sealing cover, so that alternate operation is realized. Through double fixation of the bearing supporting plate and the first bag clamping assembly, the composite transfer mechanism and the double-station design, the stability of large-weight packaging is greatly improved, the occupied area of equipment is reduced, and the production efficiency is improved.

The utility model relates to the technical field of vacuum compression bags, and provides a compression bag which comprises a bag cylinder, a sealing strip and a one-way valve, the two sides of the bag cylinder are folded inwards to form lamination parts, the part between the lamination parts forms a bag piece, the two ends of the bag cylinder are sealed, the edge of at least one end of the bag cylinder is sealed in a hot pressing mode, and a strip-shaped hole and a valve hole are formed in the bag cylinder. The sealing strip is fixedly arranged in the strip-shaped hole, and the one-way valve is fixedly arranged in the valve hole and can be in one-way conduction from inside to outside. According to the compression bag, the lamination portions used for changing the volume in a telescopic mode and the bag pieces connected between the lamination portions on the two sides of the compression bag are all obtained by folding different portions of the bag cylinder, the opening is only formed in the end portion of the bag cylinder before the bag cylinder is sealed, and therefore the lamination edges are only formed at the end portion of the compression bag after the bag cylinder is sealed, and the air tightness of the compression bag can be effectively improved; the edges of the bag barrels are connected in a sealed mode through the hot-pressing technology to form the folded edges, the air tightness of the compression bag is further guaranteed, and the clothes storage efficiency and the moisture-proof, mildew-proof and peculiar smell-proof effects of the compression bag are improved.

A humidor system comprises a container formed of expanded polypropylene (EPP) comprising four side walls and a base, a lid formed of EPP and configured to form an airtight seal with the container; and an accessory tray configured to fit within the container, further including a humidity cutout configured in the base of the container and configured to hold a humidity pack.

The embodiment of the invention belongs to the technology of storage equipment, and provides a storage box which comprises a box body, an airflow circulation assembly and an adjusting assembly, the airflow circulation assembly is provided with a first channel, a second channel and an air mixing channel, and the air mixing channel communicates with an output port of the first channel and an output port of the second channel; the air mixing channel is used for receiving airflow input by the first channel and the second channel and outputting the airflow to the storage cavity after mixing. The adjusting assembly is located on at least one of the first channel and the second channel and used for changing the physical parameters of the flowing airflow so that the physical parameters of the first channel can be different from the physical parameters of the second channel. According to the storage box provided by the embodiment of the invention, the physical parameter change fluctuation is small, the adjustment precision of the physical parameter is improved, the deviation between the actual airflow and the target airflow can be reduced, the airflow in the storage cavity can be located in the preset range, and therefore object storage is facilitated.