84results about How to "Guaranteed insulation effect" patented technology

The present disclosure relates to a fluid storage and transportation structure, comprising: an inner cylinder for storing and transporting fluid; an outer cylinder which is spacedly sleeved outside the inner cylinder, a heat insulation gap is formed between the inner cylinder and the outer cylinder, the outer cylinder is provided with a gas suction port which is communicated with the heat insulation gap; a storage box is installed in the heat insulation gap; a gas adsorbent is arranged in the storage box, the storage box is configured to selectively communicate the gas adsorbent with an external space of the storage box, so that the gas adsorbent can absorb the gas in the heat insulation gap. When the heat insulation gap is vacuumized, when the vacuum degree of the heat insulation gap approaches but does not reach the preset requirement, the vacuumization is stopped, the storage box is controlled to communicate the gas adsorbent with the external space of the storage box, so that the residual gas in the heat insulation gap can be adsorbed, so as to further improve the vacuum degree of the heat insulation gap to reach the preset requirement, effectively reducing the time and energy consumption of the vacuumization.

The utility model discloses a short-span strut-free greenhouse, relates to the technical field of greenhouses, and aims to solve the problems that a front slope single-layer greenhouse is poor in heat preservation capacity and the front slope double-layer greenhouse is poor in bearing strength. Comprising a horizontal framework, an outer greenhouse framework and an inner greenhouse framework, and the outer greenhouse framework is of an arched structure with one side inclining to form an arc. The rear wall heat preservation plate is installed on the greenhouse framework, the quilt rolling device support is installed on the greenhouse framework, and the foot margin cotton quilt is installed on a front slope of the greenhouse framework. The outer greenhouse framework is supported through the inner greenhouse framework, a central supporting column does not need to be arranged, the laying positions of inner and outer greenhouse films and cotton quilts can be reserved, and the space use efficiency in the greenhouse and the illumination condition for crop growth are improved. The overall bearing capacity of the greenhouse framework is guaranteed, and the risk that the greenhouse framework is damaged by overlarge snow load is avoided.

The application discloses a carbonization box body, which comprises a main box body, an inner box body arranged in the main box body, a left end plate, a right door frame and a door body.

The application relates to a connecting structure of a heat-insulated oil pipe and belongs to the technical field of heat-insulated oil pipes, which comprises an oil pipe, the oil pipe comprises an outer pipe and an inner pipe, the inner pipe is located in the inner part of the outer pipe, a heat-insulated cavity is formed between the outer pipe and the inner pipe, aerogel is filled in the heat-insulated cavity, the end parts of two sections of the inner pipe are fixedly connected through a threaded connection assembly, the end parts of two sections of the outer pipe are provided with heat-insulated connecting sleeve pipes, and the two ends of the heat-insulated connecting sleeve pipes are fixedly provided with plug-in rings. The heat-insulated ring on the plug-in ring of the end part of the heat-insulated connecting sleeve pipe is tightly abutted against the end part of the outer pipe, heat transfer of the connecting gap of the outer pipe can be blocked, the flowability of hot oil in the inner pipe is prevented from being deteriorated, the gap at the connecting position of the two sections of the double-layer heat-insulated oil pipe can be sealed and filled, heat loss from the gap at the connecting position of the two sections of the double-layer heat-insulated oil pipe is prevented, the heat-insulating effect of the connected heat-insulated oil pipe is ensured, and the flowability of oil is prevented from being affected.

The invention discloses a method and a device for heat preservation and decoration of an outer wall of a building. The method comprises the following steps: providing a plurality of first pipes which extend in parallel along a first direction and are fixed on the outer wall of the building, wherein the first direction is the height direction of the building; a plurality of second pipes which are connected to the first pipes in the second direction perpendicular to the first direction and fixed to the outer wall of the building are provided, so that the first pipes and the second pipes form a square frame on the outer wall of the building, and the heat preservation material is laid in the square frame to form a heat preservation layer so as to conduct heat preservation on the outer wall of the building; a hanging plate is provided, the hanging plate covers and is fixed to the square frame, and the first pipe and the second pipe are heat insulation pipes with hollow cavities. While heat preservation of the building outer wall is ensured, rain and snow water is prevented from permeating into the heat preservation layer of the building outer wall from the outside through cracks formed by cracking of the outer facade of the heat preservation layer, and cracking of the outer facade of the heat preservation layer caused by leakage and frost heaving of the heat preservation layer is further avoided.

The utility model relates to a large horizontal tank body heat insulation structure, and belongs to the technical field of tank body heat insulation. The multiple sections of inner-layer heat insulation quilts are sequentially spliced in the axial direction of the tank body and wrap the outer surface of the tank body, and an inner-layer splicing seam is formed between every two adjacent sections of inner-layer heat insulation quilts; the multiple sections of outer layer heat insulation quilts are sequentially spliced in the axial direction of the tank body and wrap the outer surface of the inner layer heat insulation quilt, an outer layer splicing seam is formed between every two adjacent sections of outer layer heat insulation quilts, and the inner layer splicing seams and the outer layer splicing seams are arranged in a spatial staggered mode. Due to the fact that the adjacent inner-layer heat insulation quilts are in flat butt joint, the adjacent outer-layer heat insulation quilts are in flat butt joint, and meanwhile the inner-layer splicing seams and the outer-layer splicing seams are arranged in a space staggered mode, the surface of the tank body can be covered comprehensively and flatly, leakage points are avoided, and therefore the heat insulation effect is guaranteed.

The invention relates to the technical field of fabricated building block processing, in particular to a fabricated building block processing device. In order to solve the problem that a single-layer integrated thermal insulation layer is easily bitten and emptied by rats and prevent a clamping block in a clamping scheme from being easily broken, a limiting channel of a multi-area double-layer thermal insulation layer structure is formed by adopting a filling block channel and a filling plate channel on a limiting shell, so that the limiting channel is aligned with a second building block body, and after a filling block and a filling plate are fed into the limiting channel, the filling block and the filling plate are separated from each other. And the filling blocks and the filling plates are directly pushed into the second building block bodies on the assembly line through the first conveying belt and the second conveying belt which are arranged on the upper layer and the lower layer, and finally the filling blocks and the filling plates exposed out of the second building block bodies are cut off to form the complete fabricated building blocks.

This invention relates to the field of fiber processing equipment, specifically to a high-efficiency, low-dust fiber slicing device and method, comprising a frame and a slicing table. The slicing table is horizontally positioned at the bottom of the frame. An air collection hood, flush with and fitted to the bottom of the slicing table, is located inside the frame. A cutting section is positioned above the slicing table, and a transverse moving frame is fixed to the bottom of the frame. A longitudinal moving frame, supporting the cutting section, is horizontally positioned at the top of the transverse moving frame. The transverse and longitudinal moving frames form a sliding platform supporting the transverse and longitudinal movement of the cutting section. Vertically penetrating fixed air holes are densely distributed on the top side of the slicing table. The air collection hood includes a horizontally extending air box. The beneficial effects are: this invention employs a negative pressure adsorption flexible conveying structure, utilizing negative pressure holes on the roller surface to periodically adsorb and lift the fiber roll to complete material feeding, avoiding compaction and deformation of the fiber material, preserving the loose porous structure of the material, and improving the processing quality of the finished slicing product.

This utility model discloses a truss heat insulation structure for an automatic tube decarbonizing machine. The front crossbeam, left tie rod, rear crossbeam, right tie rod, first diagonal tie rod, second diagonal tie rod, third diagonal tie rod, and fourth diagonal tie rod of the truss are all provided with heat insulation layers on both sides and the bottom surface. An outer shell is provided outside the heat insulation layers. A ring-shaped heat baffle is provided inside the truss, vertically arranged. The heat baffle is fixedly connected to the outer shell through spaced-apart support sleeves. The base is circular and located in the lower middle of the truss. The base is connected to the outer shell at the diagonal tie rods through vertically arranged connecting side plates. The front crossbeam, left tie rod, rear crossbeam, right tie rod, first diagonal tie rod, second diagonal tie rod, third diagonal tie rod, and fourth diagonal tie rod are all hollow tubes and fluidly connected. This utility model provides excellent cooling and heat insulation of the truss during decarbonization operations with the automatic tube decarbonizing machine, ensuring the automatic tube decarbonizing machine can operate normally at high temperatures, shortening the decarbonization operation time, improving work efficiency, and offering a simple structure.

The utility model discloses a kind of aluminium alloy louver and glass curtain wall conversion node, including curtain wall system and be located in the louver of curtain wall system, curtain wall system includes vertical keel, cross keel and hollow glass, aluminium alloy base is shaped on vertical keel and cross keel, hollow glass is connected with vertical keel and cross keel by aluminium alloy pressing plate;The periphery of louver is shaped with window frame, the inner side of window frame and corresponding vertical keel or cross keel is attached, outer side and aluminium alloy base are attached, window frame is connected with aluminium alloy base by connecting piece, aluminium alloy pressing plate is respectively pressed on the outer side of hollow glass and window frame, the periphery of louver is shaped with inner frame and outer frame in the application, cooperate and connect with the keel and aluminium alloy base of curtain wall system, the installation of louver is realized, and the outer surface of louver and the outer surface of hollow glass are flush, can perfectly link the installation of aluminium alloy pressing plate, installation is convenient, appearance is more beautiful.

The invention relates to the technical field of rotary kilns, in particular to a rotary kiln for cement production, which comprises a base and a kiln body arranged on the base, and a kiln head and a kiln tail are respectively arranged at two ends of the kiln body; prefabricated assemblies are arranged in the kiln head and the kiln tail; the prefabricated assembly comprises heat insulation bottom plates laid on the inner wall of the kiln head and the inner wall of the kiln tail, the kiln head and the kiln tail are connected and assembled through the prefabricated parts such as the heat insulation bottom plates and the heat insulation top plates, and better heat preservation and fireproof effects are achieved in a double-layer heat insulation mode; the problems that the temperature is high, heat dissipation is fast, and energy consumption of products is large in the calcining process of existing castable are solved, the heat insulation bottom plate can be tightly attached and connected in the transverse direction and the longitudinal direction by means of a positioning structure and a fixing structure in the assembling process, and therefore the assembling convenience of prefabricated parts of the type is improved; and a connecting gap of the inner side heat insulation bottom plate can be eliminated, and the heat preservation performance and the durability are guaranteed.

This utility model relates to the field of double-steel insulated glass and discloses a double-steel structure for insulated glass, including a bottom outer frame (1) and a bottom inner frame (2) located inside the bottom outer frame (1). The bottom inner frame (2) is provided with a first upper buckle (21) and a first lower buckle (22) in the middle. The bottom outer frame (1) is provided with a second upper buckle (11) matching the first upper buckle (21) and a second lower buckle (12) matching the first lower buckle (22). A sealing strip (6) is provided between the bottom inner frame (2) and the insulated glass. The bottom outer frame (1), the bottom inner frame (2) and the sides of the insulated glass are filled with sealant (7). The double-steel structure fixes the bottom outer frame and the bottom inner frame through bidirectional buckles, and effectively seals the insulated glass with the sealing strip and sealant, effectively ensuring the airtightness and heat insulation.

This utility model discloses a thermal insulation structure for aluminum alloy doors and windows, relating to the field of door and window technology. It includes a main body and a mounting frame located on one side of the main body. Two sealing plates are hinged to the inner wall of the mounting frame. This utility model achieves rapid positioning and fixation of the mounting frame and the main body through the synergistic action of the mounting components and the limiting components. The mounting frame integrates two openable sealing plates via a hinged structure. A handle on the surface of the sealing plate and a heat insulation plate fixed to the back form an integrated operating module. When ventilation is needed, the user can directly flip the sealing plate using the handle to open the heat insulation plate, avoiding the repeated disassembly and assembly of heat insulation components in traditional designs. The cooperation between the fixed shell in the limiting component and the upper limit hole in the main body, combined with the positioning function of the mounting components, makes the mounting frame easier to assemble and disassemble. This structure maintains thermal insulation performance while achieving rapid switching of ventilation functions, thus improving overall operational efficiency.

The utility model relates to the point gum equipment technical field, concretely is a kind of glue liquid heat delivery device for point gum machine, including outer sleeve tube, glue pipe and shunt, the outer sleeve tube inside is provided with glue pipe, the outer sleeve tube outside upper end is welded with the shunt of circular array distribution, the glue pipe outer wall is adhesively fixed with the blade of circular array distribution, the glue liquid in the glue pipe inside can be heat preservation, and auxiliary heat conduction is carried out through heat conduction fin, further ensure the heat preservation effect to glue liquid, avoid the heat loss of glue liquid, ensure the fluidity of glue liquid, guarantee the glue flow of glue liquid.

The utility model discloses a portable travel vacuum cup, the utility model relates to the technical field of daily necessities, this portable travel vacuum cup, including cup body mechanism, cup cover mechanism is installed at the top of cup body mechanism, the utility model discloses the magnetic attraction connection of magnetic attraction clamping slot and magnetic attraction insert block, cooperate the clamping limit of reset spring and spacing guide block, make split mechanism can be stably connected in the connecting plug post bottom of cup cover mechanism, do not need to open cup cover mechanism completely when taking liquid, only need to operate split mechanism, reduce the contact of internal liquid and outside, effectively maintain the heat preservation effect, through the handle subassembly steady installation with fixed bolt, the structure of lifting that constitutes is convenient to carry, the cooperation of filter hole subassembly and the backing pad subassembly of split mechanism, can control liquid filtration and circulation according to demand, the gasket subassembly enhances the stability of placement, and the sealing cover guarantees the overall sealing property, and the synergistic effect of each structure makes the vacuum cup more practical in the travel scene.

The steam cabinet structure comprises a steam cabinet body, the steam cabinet body is provided with a steam chamber with an opening in the upper side, a heat collection area protruding towards the steam chamber is formed at the bottom of the steam cabinet body, and a plurality of heat pipes with cavities inside are arranged in the heat collection area. The cavity is communicated with the steaming chamber through the side wall of the heat collection area, and a heat preservation wall is arranged on the peripheral side of the steaming cabinet body in a surrounding mode. On one hand, the concave heat collection area is formed at the bottom of the steam cabinet main body, so that the heating area of the steam chamber is fully increased, and meanwhile, water in the steam chamber is additionally heated in an auxiliary manner in cooperation with the heat pipe, so that the heating efficiency of the steam chamber is improved; and on the other hand, the heat preservation wall is arranged on the peripheral side of the steam cabinet body in a surrounding mode, heat dissipated from the wall face of the steam chamber is reserved, the heat on the wall face rapidly runs off along the outer wall of the steam cabinet body, the overall heating performance of the steam cabinet is optimized in an all-around mode, and the steam cabinet is made to meet the efficient and energy-saving requirements under mobile scenes such as breakfast trucks.

This utility model relates to the field of insulated box technology, and discloses an insulated box body and a pallet-type insulated box, comprising: a box body made of insulation material; a mounting assembly disposed on the inner top wall of the box body; the mounting assembly includes a mounting bracket and a mounting plate, the mounting bracket being disposed on the inner top wall of the box body and connected to the mounting plate; a gap being formed between the mounting plate and the inner top wall of the box body; a fixing assembly disposed on at least one inner side wall of the box body, the fixing assembly including a fixing bracket, one end of the fixing bracket being connected to the corresponding inner side wall of the box body, and the other end being used to confine the cold storage module on the inner side wall of the box body; and a placement box disposed on at least one inner side wall of the box body; both the gap and the placement box are used to place the cold storage module. This utility model can meet the needs of long-distance refrigerated transportation of goods.

The application discloses a battery pack and an electric equipment. The battery pack comprises a lower box body, an upper box cover and a battery pack. The upper box cover and the lower box body are mutually covered to form a containing cavity. The upper box cover is provided with a liquid flow channel and a first through hole in communication with the liquid flow channel. The first through hole is located on a side of the upper box cover away from the lower box body. The first through hole is used for injecting liquid into the liquid flow channel. The battery pack is contained in the containing cavity. The battery pack is provided with an explosion-proof valve. The explosion-proof valve is arranged towards the first through hole. The upper box cover, the battery box body, the battery pack and the electric equipment provided by the application can improve the heat insulation capacity of the upper box cover, improve the heat insulation effect of the upper box cover, and thus improve the use safety of the battery pack.

The utility model provides a simple and environment-friendly quick cutting tool for an external wall thermal insulation material, and solves the problem that the wall surface near a rear embedded plate is not covered or the rear embedded plate is covered easily because a paper cutter, a cleaver and other tools are generally used for cutting the thermal insulation plate at present. The cutting device comprises a cutting frame which is connected end to end, the cutting frame is of a vertically-through structure, and a cutting edge with a narrow lower portion and a wide upper portion is arranged at the lower end of the cutting frame. A cross beam extending in the left-right direction is fixedly arranged at the top of the cutting frame, and the middle of the cross beam arches upwards to form a handle higher than the top of the cutting frame. By using the cutting frame, the insulation board at the position of the rear embedded board can be quickly cut off, the insulation board is prevented from being cut for many times in the construction process, and the construction efficiency is improved. After the component at the position of the rear embedded plate is welded, the cut-off heat preservation material can be used for covering the exposed rear embedded plate again, the heat preservation effect at the position of the rear embedded plate is guaranteed, and meanwhile material waste is further reduced.

This utility model relates to the field of building engineering technology, specifically a fireproof and heat-insulating curtain wall for building engineering, including a curtain wall body, a sealing plate, and a support plate. Each curtain wall body has a fixing plate at its top, and long bolts pass through pre-drilled openings at the top of the fixing plates. Sealing plates and support plates are respectively provided at the top and bottom between two sets of curtain wall bodies. A fireproof layer and a reinforcing layer are respectively provided between the two sets of curtain wall bodies. Bolts are installed and tightened at the bottom front side of each curtain wall body through pre-drilled openings. By inserting a concave locking block between two sets of slots, inserting a plug-in post wrapped with an anti-slip plate into the plug-in hole, and then pressing the two ends of the locking block into the slot, the two sets of curtain wall bodies can be quickly spliced ​​and installed, improving installation efficiency and thus practicality. The sealing layer between the two sets of curtain wall bodies can seal the joint gaps, further improving the sealing performance.

The utility model discloses a kind of heating furnace shell structures with high-efficiency heat insulation interlayer, including radiation chamber, the top of the radiation chamber is provided with convection chamber, the top of the convection chamber is provided with flue gas pipe, the inside of the radiation chamber is provided with waste heat insulation component, vacuum heat insulation component is arranged between the radiation chamber and waste heat insulation component, the inside of the waste heat insulation component is provided with burner;The utility model passes through the interoperation between heat insulation lining, flow-through cavity, fan, heat exchange tube, flow guide pipe and exhaust pipe, so that device can extract airflow and exhaust heat exchange when using, reduce exhaust temperature, exhaust waste heat can be effectively utilized simultaneously, hot gas can pass through flow-through cavity after heat exchange, hot gas can form insulation layer outside combustion chamber at this time, to prevent heat loss, improve the heat insulation performance of device.

The utility model provides a box-type house with good sound insulation and heat preservation effects, which comprises a wall plate, a photovoltaic power generation plate is arranged on the top of the wall plate, a square ventilation groove and a plurality of L-shaped ventilation channels are arranged on two sides of the wall plate, one side of the ventilation groove is communicated with the ventilation channels, and filter elements are fixedly connected in the ventilation channels. Ventilation fans are fixedly connected to the connecting positions of the ventilation groove and the multiple ventilation channels, the other side of the ventilation groove is fixedly connected with an outer side plugging assembly, one side of each ventilation channel is rotationally connected with an inner side plugging assembly, the outer side plugging assembly comprises a plugging plug, a sliding rod, an electric screw and a screw nut, and the motor end of the electric screw is installed on the inner side of the ventilation groove. Ventilation control is achieved through the remotely-controlled outer side plugging assembly and the manually-controlled inner side plugging assembly, when not in use, the plugging assemblies can be completely closed, air leakage is effectively prevented, the sound insulation and heat preservation effects of the box-type room are guaranteed, meanwhile, the ventilating fan is designed to be mute, and working noise is reduced.

This utility model relates to a concave-plate induction cooker, including a cooker body. The cooker body has a non-metallic concave plate and a concave coil connected to the lower side of the concave plate. The top of the cooker body has an opening. At least part of the concave plate protrudes above the opening, and the outer edge of the top of the concave plate has a metal rim that absorbs, stores, and releases heat. The metal rim surrounds the outer periphery of the protruding part. This concave-plate induction cooker adds a metal rim, which, together with the gradient arrangement of the concave coil, naturally forms a three-ring temperature zone technology from the concave coil to the metal rim to the cookware. Through high-power rapid heating, the cookware can achieve waterless stir-frying with freshness locked in, rapid heating, preservation of food nutrients, and reduction of oxidation and yellowing. When in use, about half of the concave surface of the cookware is sunk into the concave plate and surrounded by the metal rim. The metal rim can store energy, thereby maintaining a longer heat preservation effect, preventing the heat from the heating part from dissipating, and surrounding the bottom of the cookware with heat.

The invention discloses a concrete precast beam solar curing shed and a curing control method thereof, and relates to the technical field of concrete curing, the concrete precast beam solar curing shed comprises a curing shed main body, the curing shed main body is composed of a shed frame and a first tarpaulin, a second tarpaulin is arranged on the outer side of the first tarpaulin, and an air chamber is formed between the second tarpaulin and the first tarpaulin; a solar panel is arranged at the top of the shed frame and electrically connected with a storage battery, a plurality of first ventilation pipes are arranged in the first awning cloth and connected with an air heater, the solar panel, the storage battery and the air heater are all located outside the second awning cloth, and the air heater is electrically connected with the storage battery. A high-temperature and high-humidity environment is formed by continuously introducing humid and hot air and cooperating with the spraying assembly, and a heat preservation layer is formed in the curing shed by introducing hot air into the air chamber, so that external cold air is prevented from invading.

The utility model relates to a novel steam garment steamer double -furnace heater, its structure is by host computer shell, kettle, support rod, steam pipe nozzle, heater, water delivery pipe is formed, its characterized in that the heater is equipped with the heater and the heater two between the isolation separation, the heater and the heater lower end position equipped with A inner ear and B inner ear are connected by the heat insulation strip and are heat -insulated, the A heat insulation ring of the heater upper end pad and Y type steam nozzle equipped with A upper cover heat -insulated connection, the B heat insulation ring of the heater upper end pad and Y type steam nozzle equipped with B upper cover heat -insulated connection.

The utility model relates to a kind of sterile refrigeration house floor structure, including prefabricated heat insulation sandwich panel, the prefabricated heat insulation sandwich panel includes metal plate, heat insulation core layer, first layer wood board sequentially arranged from bottom to top;Further include eccentric hook lock, two adjacent prefabricated heat insulation sandwich panels are connected locking by eccentric hook lock;Further include second layer wood board, antiskid stainless steel plate, the second layer wood board is bonded to the top of first layer wood board by glue, the antiskid stainless steel plate is bonded to the top of second layer wood board, two adjacent antiskid stainless steel plate joint are full-welded connection;Further include stainless steel arc wall corner board, the stainless steel arc wall corner board is located at floor and wallboard junction, the gap at arc is filled by heat insulation filler, the stainless steel arc wall corner board and antiskid stainless steel plate joint are connected by full-welding;Further include hardwood square, the hardwood square is distributed in heat insulation core layer;The utility model effectively reduces the breeding of harmful microorganism, and it is beneficial to on-site worker construction simultaneously.

The utility model relates to the field of fire-resistant windows, in particular to a heat insulation aluminum alloy fire-resistant window which comprises first fire-resistant glass and a window frame. Four groups of window frames for disassembly and assembly are mounted outside the first fireproof glass in a surrounding manner; the first fireproof glass is firstly assembled with the second fireproof glass on one side of the first fireproof glass, the fireproof materials are filled between the two sets of fireproof glass, then one set of window frame is assembled with the first fireproof glass, then the rest of window frames are assembled in sequence, and after the window is used for a period of time, the window can be disassembled through the connecting parts, so that the window is convenient to assemble and disassemble. By means of the detachable window body structure, the heat insulation performance of the window can be maintained, so that heat conducted through the door and window is effectively reduced, the indoor heat preservation performance is improved, the use frequency of an air conditioner and a heater can be reduced, environmental radiation and carbon emission are reduced, and environmental protection is facilitated.

The utility model discloses a heat preservation quilt folding and unfolding device for a greenhouse, and belongs to the technical field of agricultural engineering. The device mainly comprises a winding rod and a rotating arm, a protection assembly used for protecting a heat preservation film is fixedly installed on the side wall of the rotating arm, the protection assembly comprises a fixing frame, a first rotating cylinder, a second rotating cylinder and a connecting mechanism, the top of the fixing frame is fixedly installed on the side wall of the rotating arm, and the two ends of the bottom of the fixing frame are rotationally installed on the side wall of the first rotating cylinder correspondingly; the two ends of the first rotating cylinder are rotationally installed on the second rotating cylinder through connecting mechanisms correspondingly, the side wall of the first rotating cylinder is in transmission connection with the side wall of the winding rod through a first-stage transmission mechanism, and one end of the first rotating cylinder is in transmission connection with one end of the second rotating cylinder through a second-stage transmission mechanism. The edge of the heat preservation quilt or the driving assembly is prevented from making direct contact with the film face to generate hard friction, and synchronous linkage folding and unfolding of the heat preservation quilt and the protection quilt are achieved through the first-stage transmission mechanism and the second-stage transmission mechanism.