41results about How to "Solve poor heat insulation effect" patented technology

The invention relates to the technical field of plastic, and in particular relates to infrared reflection / emission thermal-insulating plastic functional master batch and a preparation method thereof. The master batch comprises the following components in percentage by weight: 5-40% of pre-dispersed infrared reflection nano material, 5-50% of infrared emission pigment packing, 5-20% of hollow micros beads, 0.1-5% of surface treating agent, 20-48.9% of synthetic resin and 1-10% of additive. Infrared reflection / emission thermal-insulating plastic made of the master batch can replace infrared reflection thermal-insulating coatings in multiple fields, and not only is the time and labor waste in spraying coatings avoided, but also environment pollution caused by organic solvent volatilization is avoided.

The invention discloses a vermiculite-based composite flame retardant and a preparation method thereof. The composite flame retardant is composed of the following components in parts by mass: 20-35 parts of modified vermiculite, 30-45 parts of magnesium hydroxide, 15-25 parts of a phosphorus based flame retardant and 2-5 parts of a silane coupling agent. The preparation method of the vermiculite-based composite flame retardant comprises the steps of carrying out modified treatment on vermiculite, preparing a composite flame retardant and compounding the composite flame retardant. The composite flame retardant prepared by using the method contains no halogen components and has environment-friendly and low-smoke effects; the composite flame retardant is prepared from different flame-retardant components; the flame-retardant and smoke-inhibiting effects of the flame retardant are simultaneously improved by utilizing the synergistic effect of the flame-retardant components.

The invention discloses a corrosion-resistance plate structure. The corrosion-resistance plate structure comprises a base body, corrosion-resistance coating and a varnish baking layer, the base body is laminated by a plurality of layers of composite plates, and an epoxy resin layer and a glass fiber layer wrap the base body; the glass fiber layer is coated with 10-25 micrometers of the varnish baking layer. The corrosion-resistance plate structure has good flame retardance effect, fire resistance and resistance to high temperature and is an insulated corrosion-resistance plate structure capable of thermal insulation.

The invention discloses a graphite-based temperature-resistant thermal insulation material and a production technology thereof. The material comprises the following components: 15-30wt percent of graphite powder, 18-28wt percent of sepiolite, 8-15wt percent of inorganic foaming agent, 5-20wt percent of inorganic adhesive, 6.4-32wt percent of high-quality cement, and other auxiliary agents as the rest; and the insulation material is obtained by stirring and mixing, molding, and curing. The invention also provides the production technology of the graphite-based temperature-resistant thermal insulation material, one is that after stirring, mixing and molding, the raw materials are naturally dried or dried and cured by using a drying oven; and the other is that after stirring, mixing and molding, the raw materials are sintered and cured. The invention has easily obtained raw materials with low price, simple production technology, convenient operation, good high-temperature resistant and thermal insulating performance of products, light weight, large mechanical strength and low thermal conductivity coefficient, and can be widely used in the fields of construction, petrochemical industry, metallurgy, and the like.

The invention provides a multipurpose small-size rescue capsule which comprises a full-sealed high-strength capsule shell. A heat insulation and heat preservation layer is arranged inside the capsule shell, a moving guide rail is arranged on the bottom of the capsule shell, the capsule shell comprises a first personnel cabin, a second personnel cabin and a transition cabin, wherein the first personnel cabin and the second personnel cabin are located at the two ends of the capsule shell and are of a hemispherical structure, the transition cabin is located on the middle section of the capsule shell and is of a cylindrical structure, the first personnel cabin, the transition cabin and the second personnel cabin are fixedly connected in a sealed mode, escape doors are arranged at the two ends of the capsule shell, and an air purifying system, an air circulating system, a living system and an illuminating system are further arranged in the capsule shell. The multipurpose small-size rescue capsule is reasonable in structural design, materials of the capsule shell are capable of effectively protecting refuge personnel, strong in anti-explosion and impact resistance and good in sealing and heat insulation effect, and the capsule shell can float on the sea surface due to the special shape structure. The multipurpose small-size rescue capsule can be disassembled and used as a resting and chatting leisure facility when no accident happens, and can be quickly assembled to provide effective protection of explosion proofing, fire proofing, water proofing and the like for the refuge personnel when earthquakes, fire disasters, tsunamis and other accidents happen.

The invention belongs to the field of solar sheds and in particular relates to a solar rolling blind machine for a shed. The solar rolling blind machine for the shed comprises a heat collecting tank, a heat collecting pipe, a heat collecting pipe frame, a main supporting frame, a cross baffle, a vertical baffle, a main heat conducting pipe, an operating room, a waterproof separating plate A, a waterproof separating plate B, a platform, an outer shed frame, an inner shed frame, a shed frame assembly, a rolling blind machine, a dimension disc, a rotating shaft, a lower rolling blind supporting frame, an upper rolling blind supporting frame, a rolling blind shaft, a heat preservation blind, a rolling blind supporting frame, a rolling blind shaft fixing device, a supporting frame spring A, a supporting frame spring B, an air thermal insulating layer A, an air thermal insulating layer B, a thermal insulating film reel, a light-transmitting thermal insulating film, an outer shed frame bottom fixing device, an inner shed frame bottom fixing device, a secondary heat conducting pipe assembly, a valve, a general control cabinet, a control console, light tubes, a shed detector and a heat supplying device, wherein the rolling blind machine, the outer shed frame bottom fixing device and the inner shed frame bottom fixing device are fixed inside the platform, the air thermal insulating layer A is arranged on the outer shed frame, and the air thermal insulating layer B is arranged on the inner shed frame.

The invention provides a horizontal refrigerator door seal and a horizontal refrigerator. The door seal is not prone to deforming, good in rebound resilience and reliable in sealing, reserved gaps are not prone to appearing on the periphery of a horizontal refrigerator door with the door seal, and the sealing and heat insulation effect is good. The horizontal refrigerator door seal comprises a mounting fixing part and a sealing part. The mounting fixing part and the sealing part are of an integrated structure, and the mounting fixing part is located above the sealing part. The sealing part is provided with a sealing air chamber. A supporting air chamber, a rebound air chamber and supporting ribs are arranged in the sealing air chamber. One end of each supporting rib is connected to the upper side face of the sealing air chamber, and the other end of each supporting rib is connected to the rebound air chamber. When the door is closed under the action of gravity to extrude a door seal strip, the supporting force of the door seal can be improved through the supporting air chamber, and the situation that the door seal excessively deforms due to the too heavy door is avoided; the rebound air chamber guarantees the rebound resilience of the door seal; and the supporting ribs achieve the supporting function and the rebound function, it is further guaranteed that the door seal keeps the basic shape within the deformation range, and the sealing and heat insulation effect of the door seal is good.

The invention discloses vacuum glass which is air-tight, long in service life, good in heat-insulating effect and does not affect the sight line. The vacuum glass comprises an upper glass layer and a lower glass layer, wherein supporting blocks are arranged between the upper glass layer and the lower glass layer at intervals; sealing glue is arranged on the edges of the upper glass layer and the lower glass layer; a vacuum chamber is formed between the upper glass layer and the lower glass layer; and the vacuum glass is characterized in that the supporting blocks are glass beads with the diameters of 1-2mm and the intervals of 2-4cm; and a glass strip is arranged between the upper glass layer and the lower glass layer and on the inner side of the sealing glue through shadowless glue; and air exhausting hole communicated with the vacuum chamber is formed in the glass strip.

The invention relates to a heat sealing material and a preparation method thereof. The heat sealing material comprises an elastic tubular framework, an inner core part composed of a heat insulation filler packed in the elastic tubular framework, and an outer layer part composed of a heat insulation cloth wrapping the outside of the elastic tubular framework, wherein the elastic tubular framework is of a circular tube type structure with meshes, and the circular tube type structure is formed by crocheting metal wires. The preparation method comprises the following steps: providing the metal wires, forming the framework through weaving, shaping the framework, packing the heat-insulating filler, and wrapping the heat-insulating cloth. The heat sealing material provided by the invention solvesthe problem of insufficient resilience of an existing heat sealing material, enhances comprehensive properties of temperature resistance, compressibility, high resilience, heat sealing and the like of the heat sealing material, and can provide a high-performance elastic heat sealing material for various fields.

The invention discloses an anti-burning electric heating food heat retaining panel which comprises a shell body, a heating element arranged in the shell body and a panel body arranged on the shell body, wherein a polyurethane foam plastic board is arranged on the upper surface of the panel body, dish containing grooves are formed in the polyurethane foam plastic board, the distance between each dish containing groove and the edge of the polyurethane foam plastic board is at least more than 3cm, and the shell body is wrapped by a superfine glass cotton layer. According to the anti-burning electric heating food heat retaining panel, the polyurethane foam plastic board is arranged on the panel body, and polyurethane foam plastics have excellent effects of heat preservation, heat insulation and inflaming retarding, so people can be prevented from being burnt by the panel body when people pick up food. The shell body is wrapped by the superfine glass cotton layer, and the problem that the shell body is bad in heat insulation effect is resolved.

The invention discloses a sealed incinerator which comprises an incinerator body, an incinerator door, a throwing opening, a combustion room, a smoke exhausting pipeline, sealing steel plates, heat insulation plates, fireproof walls and fireproof cement. The sealing steel plates are located on the outer side of the incinerator body. The heat insulation plates are located on the inner side of the sealing steel plates. The fireproof walls are located on the inner sides of the heat insulation plates and are composed of a plurality of fireproof bricks. The fireproof cement is located at the gaps of the fireproof bricks and the outer sides of the fireproof bricks. A three-level sealing structure is adopted for the sealed incinerator; the third level is the innermost layer making contact with a fire source and is the fireproof walls formed by piling the fireproof bricks; and the wall gaps are filled with the fireproof cement. By means of the structure, the sealed incinerator has good sealing and heat insulation performance; and in addition, the incinerator door and the throwing opening are provided with fireproof bricks and V-shaped heat insulation bars, and the smoke exhaust pipeline is provided with a sealing flange and an asbestos plate, and therefore the incinerator is overall sealed and is capable of insulting heat, it is ensured that the temperature of the incinerator body is lower than 26 DEG C, and zero diffusion of poisonous gas is achieved.

The invention discloses a high-temperature-resistant gas one-way valve. The high-temperature-resistant gas one-way valve is characterized by comprising a valve body, a first cavity is formed in the bottom end of the valve body, a second cavity is formed in the side wall of the valve body, the first cavity communicates with the second cavity, a valve deck is installed at the top end of the first cavity, a stepped hole is formed in the first cavity and located below the second cavity, a conical sealing surface is ground on the stepped hole, a sealing valve body is provided with a valve element assembly (3), the valve element assembly is located in the first cavity, a pressing assembly is installed on the valve deck and used for fixing the valve element assembly, and a sealing assembly is installed on the valve element assembly. According to the high-temperature-resistant gas one-way valve, the sealing and heat-insulating properties are good.

The invention provides a full-cast-in-place self-ventilation dour-layer roof granary structure and a construction method. The structure comprises a square granary body, and a granary roof arranged atthe top of the granary body; the granary body comprises a foundation, stand columns and walls formed through cast-in-place concrete; the granary roof comprises a trapezoidal steel roof truss, an upper-layer roof panel and a lower-layer roof panel; the foundation, the stand columns, the walls and the granary roof are integrally formed through casting of concrete on reinforcement nets in place; thesteel roof truss is connected with the columns and the walls; the foundation, the stand columns, the walls and the lower-layer roof panel form whole closed space; and the steel roof truss between theupper-layer roof panel and the lower-layer roof panel forms self-ventilation heat adjusting space. The structure can effectively stop the heat transfer to protect low temperature in the granary, and achieves environmental protection, energy conservation and good airtight performance in the granary.

The invention relates to a high-bonding-strength mildew-proof heat-insulation and -preservation coating which is prepared from the following components in parts by weight: 40-50 parts of water, 0.5-0.6 parts of hydroxyethyl cellulose, 0.5-0.6 parts of an inorganic thixotropic thickening agent, 0.05-0.1 parts of an aqueous multifunctional auxiliary agent, 0.7-0.8 parts of a dispersing agent, 0.05-0.1 part of a wetting agent, 20-25 parts of 500 to 800-mesh coarse whiting, 8-12 parts of aerogel, 16-20 parts of an emulsion, 0.8-1.2 parts of an antifreeze agent, 0.6-0.7 part of a coalescing agent,0.5-0.8 part of a defoaming agent and 0.2-0.5 part of an anti-corrosion and anti-mildew agent. The coating disclosed by the invention not only has a heat insulation effect of a superior product, but also has a heat conductivity coefficient of less than 0.08 W / (m.K) and has the advantages of high bonding strength, high-efficiency mildew prevention and bacteria prevention effects; the paint film hasexcellent performance and good hand feeling; not only are heat conduction and heat radiation blocked and heat conduction reduced, but also the construction performance of the coating is improved.

The invention discloses a takeout delivering box for an unmanned aerial vehicle. The takeout delivering box comprises an unmanned aerial vehicle, landing gears are installed below the unmanned aerialvehicle, rubber supporting feet are arranged at the bottom ends of the landing gears, a connecting plate is inserted between the landing gears, an anti-vibration pad is arranged on the connecting plate, a takeout box body is connected on the anti-vibration pad, and is fixed to the connecting plate through a fixing belt, a protection sleeve is installed on the outer side of the takeout box body, hinges are installed on one side of the takeout box body, the takeout box body is connected with a box door through the hinges, a display screen is embedded into the side, away from the takeout box body, of the box door, a groove is formed in the side, close to the takeout box body, of the box door, and a sealing strip is embedded into the groove. According to the takeout delivering box for the unmanned aerial vehicle, the takeout box body is an environment-friendly EPP takeout box body, the box door is hinged onto the takeout box body, and the takeout delivering box can have good corrosion resistance, is light in mass, convenient to carry and harmless to the human body, and can be recycled and reused.

The invention discloses a novel low-temperature air distributing valve structure. The novel low-temperature air distributing valve structure comprises a low-temperature valve seat assembly and an aircylinder assembly. A low-temperature valve core assembly capable of moving up and down is coaxially arranged in the low-temperature valve seat assembly. The air cylinder assembly is coaxially arrangedabove the low-temperature valve seat assembly, and a shaft sleeve is coaxially sleeved with the air cylinder assembly and can move up and down along the axis of the air cylinder assembly. A valve rodis coaxially sleeved with the air cylinder assembly and located above the shaft sleeve. The lower end of the valve rod is connected with the low-temperature valve core assembly through the shaft sleeve. The position between the valve rod and the air cylinder assembly is filled with a heat insulating assembly. The valve rod moves up and down to drive the low-temperature valve core assembly to moveso as to achieve opening and closing of the low-temperature valve seat assembly. According to the novel low-temperature air distributing valve structure, smoothness of high-frequency motion is achieved through the motion form that the valve rod drives the low-temperature valve core assembly to move in the axial direction of the low-temperature valve seat assembly, transmission of high valve braking force under high frequency is ensured by adopting shaft sleeve connection, through the heat insulating assembly arranged between the valve rod and the air cylinder assembly in a filling mode, the good sealing performance and good heat insulating performance of a valve are achieved, and the air distributing efficiency of the valve is improved.

The invention belongs to the field of electronic cigarettes, and particularly relates to a porous aerogel material, a preparation method thereof and an electronic cigarette atomization core. The porous aerogel material provided by the invention is prepared by mixing silicon dioxide aerogel powder and pore-forming agent powder, pressing and heating, wherein the pore-forming agent powder comprises one or more of ammonium bicarbonate, ammonium oxalate and polymethyl methacrylate; the particle size of the pore-forming agent powder is larger than the pore diameter of the silicon dioxide aerogel powder. The porous aerogel material provided by the invention has the advantages of reasonable porosity, large specific surface area, small density and high temperature resistance through combination of nano micropores of the silicon dioxide aerogel and artificial pores. The atomization core of the electronic cigarette prepared from the material is smooth in tobacco tar supply, and can adjust the dryness and humidity of a local area, so that atomized smoke is finer and smoother; and moreover, the material has excellent temperature resistance and heat insulation performance, so that the safe use of equipment can be ensured, and peculiar smell spreading caused by high-temperature carbonization generated by over-fast local heating of the tobacco tar can be prevented.

The invention discloses an energy-saving louver blade, a louver and a louver skylight roof. The louver comprises a frame body and louver blades. The frame body comprises longitudinal keels. The longitudinal keels comprise longitudinal keel bodies and fixing strips. A first heat insulation mechanism is fixed to the indoor side of the frame body, and the first heat insulation mechanism comprises a first heat insulation layer fixed to the indoor sides of the longitudinal keel bodies and a second heat insulation layer fixed to the indoor sides of transverse keel bodies. Each louver blade comprisesa blade body. Each blade body is provided with a swing axis end and an outward swing end. A third heat insulation layer is fixed to the indoor side of each blade body. The end of the swing axis of each blade body is wrapped with a soft sealing body, and the end. A sealing groove matched with the corresponding soft sealing body in shape is formed in one end of the outward swing end of the corresponding blade body, of each third heat insulation layer. The energy-saving louver is adopted in the louver skylight roof. By adopting the technical scheme, the heat insulation performance and the sealing performance are good.

The door and window heat insulation strip comprises a mounting frame, first sealing grooves are formed in the tops of the left side and the right side of an inner cavity of the mounting frame, second sealing grooves are formed in the left side and the right side of the bottom of the inner cavity of the mounting frame, and a sealing strip body is arranged in the inner cavity of the mounting frame. Through cooperative use of a second sealing groove, a mounting cavity, a movable sealing block, a through hole, a top sealing strip, a pressing assembly, a rotating rod, a two-way threaded rod, a rotating piece, a connecting plate, a threaded sleeve, a worm gear, a reset spring, a connecting rod, a movable sliding block, a worm, a limiting sliding block, a sealing plate and a first sealing groove, the problems that an existing heat insulation strip is poor in sealing effect, and the sealing effect is poor after mounting; a gap is easily reserved between the door and the window and the profile, so that the sound insulation and wind resistance of the door and the window are influenced, and meanwhile, external heat is easily caused to enter a room from the gap through the door and the window, so that the sealing effect of the heat insulation sealing strip is influenced.

The invention discloses a high-temperature fuel cell stack design which comprises a heat insulation shell, a cell group is placed in the middle of the interior of the heat insulation shell, the cell group is connected with the heat insulation shell through a limiting fixing frame, and a first heat cavity and a second heat cavity are formed in the middle of the space between the cell group and the heat insulation shell. A gas inlet cavity is formed in one end of the battery cell group, and a tail gas cavity is formed in the other end of the battery cell group. The battery pack has the beneficial effects that the battery pack has good sealing and heat insulation effects, heat loss can be effectively avoided, so that the energy conversion efficiency is effectively improved, energy loss is avoided, the battery pack can be well supported and fixed through the limiting fixing frame, damage to internal elements in the carrying and transporting process is avoided, thermal expansion stress and strain can be effectively absorbed, and the service life of the battery pack is prolonged. The structure stability of the battery cell group can be maintained, the reaction temperature of the battery cell group can be monitored in real time, and the influence of too high or too low temperature on the performance stability of the battery cell group is avoided.

The invention discloses a colored coating coil material capable of being conveniently fixed and installed. The colored coating coil material comprises a coil material plate, wherein the upper end of the coil material plate is provided with wire passing grooves; end connecting plates are arranged at the left and right ends of the coil material plates; fixing holes are formed inside the end connecting plates; the coil material plate comprises an outer paint coating, primer, a chemical transfer film, a zinc plating layer, a cold rolled steel plate, a heat insulation element, sealing elements andan isolation layer; the primer is arranged at the inner side of the outer paint coating; the chemical transfer film is arranged at the inner side of the primer; the zinc plating layer is arranged at the inner side of the chemical transfer film; the cold rolled steel plate is arranged at the inner side of the zinc plating layer; the isolation layer is arranged at the inner side of the cold rolled steel plate; the heat insulation element is arranged inside the isolation layer; the sealing elements are arranged at the two ends of the heat insulation element. The wire distribution is convenient; the problem of poor heat insulation effect of the coating coil material is solved.

The invention provides an automotive cushion buffering spring which comprises a buffering plate and a steel plate. The buffering plate is movably connected on the upper portion of the steel plate andcomprises a heat insulation screen, a buffering gasket and fixing frames, the buffering gasket is fixedly connected on the inner lower portion of the buffering plate, the heat insulation screen is fixedly connected on the upper portion of the buffering gasket, and the fixing frames are fixedly connected on two sides of the heat insulation screen. A guide rod, the heat insulation screen, the fixingframes, the buffering gasket and a spring body are arranged in the spring, expanding and contracting of the guide rod drive the spring body to expand and contract, bilateral swinging of the spring body can be limited by the guide rod, vibration on the buffering plate is buffered by the spring body, so that people can sit on cushions in a balanced manner, and the spring has wide practicability.

The present application discloses an electronic device. The disclosed electronic device includes a first housing, a second housing, a heat insulation component, a main control system and a chip, wherein: the first housing and the second housing are respectively connected to the heat insulation The two sides of the components are opposite to each other, and the first shell and the heat insulation component form the front chamber of the equipment, and the second shell and the heat insulation component form the rear chamber of the equipment. The front chamber of the equipment and the rear chamber of the equipment are isolated from each other; In the rear chamber, the chip is arranged in the front chamber of the equipment, and the chip is electrically connected to the main control system; the heat insulation component includes a heat shield, the heat shield includes a peripheral hollow edge, and at least one of the two surfaces opposite to the peripheral hollow edge is opened There are hollow grooves, and the first shell and the second shell are respectively butted on the two opposite surfaces of the peripheral hollow edges. The above solution can solve the problem of poor thermal insulation of the electronic equipment in the background art.

The invention discloses coated glass. The coated glass comprises a glass substrate and a film layer arranged on one surface of the glass substrate, wherein the film layer is sequentially provided with a first composite layer, a first functional layer, a second composite layer, a second functional layer, a protective layer, a discoloring layer and an antipollution layer from the glass substrate outward, the invention also discloses a preparation method of the coated glass, and the coated glass is mainly prepared by adopting a vacuum magnetron sputtering method. The coated glass prepared by adopting the preparation method has multiple functions such as pollution prevention, antioxidation, discoloration and thermal insulation.

The invention belongs to the field of blueberry planting, and particularly relates to a multifunctional blueberry planting roller blind greenhouse. The multifunctional blueberry planting roller blindgreenhouse comprises a platform, a supporting wall, a vertical baffle, an outer greenhouse frame, an inner greenhouse frame, a heat-retaining blind, a nonopaque heat-insulated film, a planting frame,a roller blind shaft fixing part, a roller blind shaft, a roller blind fixing support, a heat-insulated film reel case, a heat-insulated film reel, a heat-insulated film traction part, a roller blindmoving support, a scale disk, a roller blind machine, a heat-insulated film bottom fixing part, a greenhouse frame bottom fixing part A, a greenhouse frame bottom fixing part B, a floating film A, a floating film B, a light reflecting film supporting frame A, a light reflecting film A, a fixing film A, a fixing film B, a light reflecting film supporting frame B, a light reflecting film B, a fixingfilm C and a fixing film D, wherein the outer greenhouse frame, the inner greenhouse frame and the planting frame are on the upper surface of the platform, the supporting wall is beside the platform,the roller blind machine is between the platform and the supporting wall, and the heat-insulated film bottom fixing part, the greenhouse frame bottom fixing part A and the greenhouse frame bottom fixing part B are in the platform.

The invention provides a multipurpose small-size rescue capsule which comprises a full-sealed high-strength capsule shell. A heat insulation and heat preservation layer is arranged inside the capsule shell, a moving guide rail is arranged on the bottom of the capsule shell, the capsule shell comprises a first personnel cabin, a second personnel cabin and a transition cabin, wherein the first personnel cabin and the second personnel cabin are located at the two ends of the capsule shell and are of a hemispherical structure, the transition cabin is located on the middle section of the capsule shell and is of a cylindrical structure, the first personnel cabin, the transition cabin and the second personnel cabin are fixedly connected in a sealed mode, escape doors are arranged at the two ends of the capsule shell, and an air purifying system, an air circulating system, a living system and an illuminating system are further arranged in the capsule shell. The multipurpose small-size rescue capsule is reasonable in structural design, materials of the capsule shell are capable of effectively protecting refuge personnel, strong in anti-explosion and impact resistance and good in sealing and heat insulation effect, and the capsule shell can float on the sea surface due to the special shape structure. The multipurpose small-size rescue capsule can be disassembled and used as a resting and chatting leisure facility when no accident happens, and can be quickly assembled to provide effective protection of explosion proofing, fire proofing, water proofing and the like for the refuge personnel when earthquakes, fire disasters, tsunamis and other accidents happen.

The invention discloses a novel low-temperature air distributing valve structure. The novel low-temperature air distributing valve structure comprises a low-temperature valve seat assembly and an aircylinder assembly. A low-temperature valve core assembly capable of moving up and down is coaxially arranged in the low-temperature valve seat assembly. The air cylinder assembly is coaxially arrangedabove the low-temperature valve seat assembly, and a shaft sleeve is coaxially sleeved with the air cylinder assembly and can move up and down along the axis of the air cylinder assembly. A valve rodis coaxially sleeved with the air cylinder assembly and located above the shaft sleeve. The lower end of the valve rod is connected with the low-temperature valve core assembly through the shaft sleeve. The position between the valve rod and the air cylinder assembly is filled with a heat insulating assembly. The valve rod moves up and down to drive the low-temperature valve core assembly to moveso as to achieve opening and closing of the low-temperature valve seat assembly. According to the novel low-temperature air distributing valve structure, smoothness of high-frequency motion is achieved through the motion form that the valve rod drives the low-temperature valve core assembly to move in the axial direction of the low-temperature valve seat assembly, transmission of high valve braking force under high frequency is ensured by adopting shaft sleeve connection, through the heat insulating assembly arranged between the valve rod and the air cylinder assembly in a filling mode, the good sealing performance and good heat insulating performance of a valve are achieved, and the air distributing efficiency of the valve is improved.