30results about How to "Good heat insulation and cooling effect" patented technology

The invention relates to a insulating coating whose constituents include film forming substance 15-65 weight parts, nano porous SiO2 3-20 weight parts, nano iron oxide yellow 1-12 weight parts, dyestuff 5-30 weight parts, gasket material 3-22 weight parts, auxiliary agent 0.4-8 weight parts, and dissolvent 6-30 weight parts.

The invention relates to heat insulating and energy saving coating used for the vehicle, and the preparation method thereof. The invention takes organic resin film forming material as the main material, the coating at least includes infrared reflection pigment, hollow ceramic micro-spheres and silicon dioxide aerogel, an organic resin film having low sunlight absorption rate is formed in the coating through the organic resin film forming material with high transparency, the visible light and the near infrared ray in the sunlight are reflected through the infrared reflection pigment, the rutile type titanium dioxide and the hollow ceramic micro-spheres, and simultaneously a compact vacuum layer and an inert gas layer are formed on the surface of a coated object through the hollow ceramic micro-spheres and the silicon dioxide aerogel, so as to effectively isolate the radiant heat of the sun, and to reduce the heat conduction of air, and finally the heat insulating and energy saving coating used for the vehicle is formed, which not only can effectively reflect the energy in the sunlight, but also can effectively isolate the radiant heat of the sun and reduce the heat conduction of air, and simultaneously has good weather resistant performance, chemicals resistant performance, mechanical property and decorative property.

The invention discloses water montmorillonite nano composite heat insulating waterproof paint and a preparation method thereof. The water montmorillonite nano composite heat insulating waterproof paint comprises the following ingredients in percentage by mass: 30 to 35 percent of nano composite emulsion, 10 to 15 percent of polymer emulsion, 10 to 15 percent of rutile-type titanium pigment, 10 to15 percent of organic modified nano montmorillonite, 5 to 10 percent of nano oxide, 0.3 to 0.35 percent of pH adjusting agent, 0.50 to 0.65 percent of film-forming additive, 0.35 to 0.4 percent of elastic foam killer, 0.20 to 0.30 percent of wetting agent, 0.10 to 0.15 percent of dispersion agent, 0.50 to 0.65 percent of anti-freezing agent, 0.10 to 0.15 percent of sterilization antiseptic and 20to 25 percent of water. The water montmorillonite nano composite heat insulating waterproof paint not only has good compatibility, dispersion performance and good stability, but also has good water resistance, heat insulation, environmental protection, outdoor weather resistance and good adhesive attraction and has an antibacterial self-cleaning function.

The invention discloses a vibration-damping heat-insulation paint which comprises the following components by mass percent: 9.5-11.5% of chlorine ether resin, 5-6% of adhesive, 3.5-4.5% of melamine urea copolymerization resin, 18-21% of environment-friendly solvent, 14.5-16.5% of soft filler I, 13-15% of soft filler II, 18-20% of soft filler III, 3.8-5.8% of plasticizer, 1.5-2.3% of titanium pigment and 4-6% of hollow micro-bead. The invention also discloses a preparation method of the vibration-damping heat-insulation paint. The high-efficiency vibration-damping heat-insulation paint can be coated on various substrates, has advantages in various aspects such as heat insulation, heat preservation, fire prevention, water prevention, crack prevention, noise prevention, weather resistance, acid / alkali resistance, salt-fog resistance, corrosion resistance, vibration damping, durability and the like, is suitable for thermal protection and vibration damping at the external surfaces of spaceflight instruments and data recording instruments of aerospacecrafts and can be used for damping the impact friction and the like of containers and the like.

The invention discloses a novel thermal insulation system for a free jet flow force measuring test model. The novel thermal insulation system includes a force measuring balance, a supporting rod, a balance protection cover, a thermal insulation assembly and a gas cooling assembly; the force measuring balance is arranged in a mould inner cavity; one end of the force measuring balance is connected with the mould inner cavity; one end of the supporting rod is connected with the other end of the force measuring balance; the balance protection cover is arranged on the force measuring balance in a covering manner so as to realize thermal insulation protection for the force measuring balance; the thermal insulation assembly includes a thermal insulation sleeve which is arranged along the circumferential direction of the supporting rod; a sealing space is defined between the thermal insulation sleeve and the outer circumferential surface of the supporting rod; labyrinth seal components are arranged on the supporting rod at intervals so as to divide the sealing space into at least three intervals; and the gas cooling assembly includes gas jetting rings which are located in the intervals and sleeve the outer circumference of the supporting rod, and a cold gas pipeline which is communicated with the gas jetting rings, wherein the cold gas pipeline is connected with a high-pressure cold gas source, and the gas jetting rings jet out a cooling gas to decrease the temperature of the mould inner cavity. According to the novel thermal insulation system of the invention, a plurality of thermal insulation and cooling means are adopted, and therefore, the novel thermal insulation system is remarkable in cooling effect and compact in structure, and can effectively control the temperature of the balance.

The present invention relates to building heat insulating material, and is especially one kind of heat insulating anticracking waterproof polystyrene slurry. The slurry consists of polystyrene grain 3-5 wt%, infrared reflecting material 4-8 wt%, doping material 2-5 wt%, hollow glass bead 2-5 wt%, cement 30-50 wt%, short polypropylene fiber 0.1-0.5 wt%, polymer emulsion 5-10 wt%, assistant 1.9-4.5 wt% and water 20-40 wt%, with the polymer emulsion being flexible emulsion, styrene-acrylic emulsion and / or elastic emulsion. It is used in paint for wall and roof, and has low moisture absorption, high adhesion, no cracking, great seepage resistance, high heat insulating effect and other advantages.

The invention discloses an evaporating pipe type compact combustion chamber. The inner wall and outer wall of the combustion chamber and an evaporating pipe are integrally formed, so that the weight is lowered, the overall dimensions are reduced and the whole performance is improved. Inner air film holes and outer air film holes are formed in the inner wall and the outer wall of the combustion chamber separately and are both divergent air film holes, namely the hole area of the inner air film holes and the outer air film holes in one side of a flame tube is greater than that of the inner air film holes and the outer air film holes in the other side of the flame tube. Accordingly, the surficial area of the inner wall surface of the flame tube is increased, wall surface heat transfer is intensified, flow field homogeneity is optimized, combustion efficiency is improved, the temperature distribution coefficient of a combustion chamber outlet is decreased and pollutant emission is reduced.

The invention relates to a moxibustion instrument, in particular to an open fire smoke cleaning moxibustion instrument, which comprises a combustion part, a driving part and an air outlet part, wherein the combustion part, the driving part and the air outlet part are sequentially communicated. The combustion part comprises a combustion chamber body, a heat insulation ventilation layer and a shellbody, wherein the combustion chamber body is arranged in the middle of the combustion part, the heat insulation ventilation layer is arranged surrounding a periphery of the combustion chamber body, aside wall of the combustion chamber body is provided with a hole; the shell body comprises a combustion chamber inner wall and a combustion chamber outer wall, an outer layer of the heat insulation ventilation layer is fixedly attached to the combustion chamber inner wall, and the combustion chamber outer wall is arranged at an outer side of the combustion chamber inner wall. By the adoption of the open fire smoke cleaning moxibustion instrument, substances generated after burning of wormwood are subjected to graded filtration through a precipitation suction chamber, so that wormwood oil is adsorbed on an absorption medium on a filter element, a separation process of smoke and gas is realized, and the open fire smokeless effect is achieved.

The invention discloses an efficient colored heat-insulating and cooling coating as well as a preparation method and application thereof, the efficient colored heat-insulating and cooling coating takes a polymer porous film as a bottom layer, and an infrared transparent colored film is arranged on the polymer porous film. The preparation method comprises the following steps: preparing the polymer porous film and preparing the infrared transparent color film on the polymer porous film. The efficient colored heat-insulating and cooling coating has the advantages of being adjustable in appearance color, high in sunlight reflecting capacity, good in heat-insulating and cooling effect and the like, the coating is attached to the surface of a base body needing temperature adjustment and the skin surfaces of animals and human bodies in a covering, coating or pasting mode and the like, the color requirements of city appearance, pollution prevention and the like are met, and meanwhile the heat-insulating and cooling effects are good. The efficient cooling effect can be shown, refrigeration energy consumption is greatly reduced, the use value is high, and the application prospect is good. The preparation method has the advantages of being simple and easy to implement, low in production cost, high in film forming efficiency and the like, is suitable for preparing a large-area coating material and is beneficial to industrial application.

The invention provides a heat insulation building material and a preparation method thereof. The preparation method includes the steps: uniformly mixing in advance bamboo scraps, liquid water glass, chloroprene rubber adhesive and an appropriate amount of water, standing for 10-20 days, and continuously mixing for 1-2 hours every other one or two days during 10-20 days to prepare paste; preparing light calcium carbonate, expanded perlite, lime crystal, sand and lime into powder, adding concrete, gypsum powder and coal ash, and sufficiently and uniformly mixing to prepare powdery dry mixture; sufficiently mixing foaming agents, addition agents, the paste obtained in the step (2) and the dry mixture obtained in the step (3) to prepare mortar; waiting solidification of the mortar in the step (4) at normal temperature to obtain the heat insulation building material. The preparation method effectively reduces dependency on mineral resources, and the material is easily obtained, suitable for large-scale production and manufacturing and remarkable in heat insulation and cooling effect.

The invention discloses a niobium alloy surface high-temperature-resistant high-oxygen-barrier heat-insulating coating and a preparation method thereof. The coating comprises a bonding layer, an anti-oxidation layer, an oxygen propagation resistance layer and a heat-insulating cooling layer. The preparation method comprises the following steps that the bonding layer is prepared on the niobium-based alloy surface through metal tantalum; the bonding layer is placed in air, the metal tantalum is oxidized, and the tantalum oxide anti-oxidation layer is formed on the surface of the bonding layer; the oxygen propagation resistance layer is prepared on the surface of the anti-oxidation layer by using a ceramic material; and the heat-insulating cooling layer is prepared on the surface of the oxygen propagation resistance layer by using a ceramic material. The coating material prepared by the invention has the properties of heat insulation, cooling, high temperature resistance, oxidation resistance, oxygen propagation resistance, corrosion resistance and the like, can enable the niobium-based alloy to serve for a long time at the temperature close to the melting point of the niobium-based alloy, and breaks through the working limit temperature of a traditional niobium alloy material.

The invention discloses an ultra-high temperature long-term mechanical testing system for configuring a thermal insulation air-cooling clamp. The system comprises an ultra-high temperature heating surface, a thermal insulation air-cooling clamp, a transition clamp and like components; the ultra-high-temperature heating surface is used for realizing predetermined testing temperature and precision thereof; the thermal insulation air-cooling clamp is compatible with a thermal insulation function of a ceramic material and an airflow cooling function in the cavity; the transition clamp mainly bearsthe mechanical load. The testing system disclosed by the invention has the advantages that the ultra-high temperature long-term mechanical testing system is simple in structure, the temperature is always maintained at a low level by reasonably designing the thickness of a thermal insulation air-cooling clamp cavity and adjusting the pressure and flow velocity of the cooling gas in the cavity, sothat the long-thermal mechanical performance testing of the ultra-high temperature structure material under the ultra-high temperature environment can be realized by selecting the common high-temperature alloy.

The invention discloses a novel releasing agent. The novel releasing agent is prepared from the following raw materials and formulation components in parts by weight: 70 to 95 parts of aquadag, 2 to 3 parts of edible salt, 7 to 8 parts of an emulsifying agent, 1 to 5 parts of polyacrylamide, 1 to 2 parts of a defoamer, 1 to 7 parts of organic silicon resin and 20 to 30 parts of deionized water. The novel releasing agent disclosed by the invention has good heat insulation and heat control effects; the service life of a mold can be prolonged, and the casting quality can be improved; the novel releasing agent has good lubricating property, releasing property, chemical stability and high-temperature adhesiveness, is unlikely to produce a chemical reaction, is easy for coating, has extremely high heat resistance, is unlikely to age the coating, is unlikely to freeze and solidify at too low temperature, and is low in cost.

The invention relates to heat insulating and energy saving coating used for the vehicle, and the preparation method thereof. The invention takes organic resin film forming material as the main material, the coating at least includes infrared reflection pigment, hollow ceramic micro-spheres and silicon dioxide aerogel, an organic resin film having low sunlight absorption rate is formed in the coating through the organic resin film forming material with high transparency, the visible light and the near infrared ray in the sunlight are reflected through the infrared reflection pigment, the rutile type titanium dioxide and the hollow ceramic micro-spheres, and simultaneously a compact vacuum layer and an inert gas layer are formed on the surface of a coated object through the hollow ceramic micro-spheres and the silicon dioxide aerogel, so as to effectively isolate the radiant heat of the sun, and to reduce the heat conduction of air, and finally the heat insulating and energy saving coating used for the vehicle is formed, which not only can effectively reflect the energy in the sunlight, but also can effectively isolate the radiant heat of the sun and reduce the heat conduction of air, and simultaneously has good weather resistant performance, chemicals resistant performance, mechanical property and decorative property.

The invention discloses an aluminum alloy forging release agent. The release agent comprises, by weight, 2-5% of an isobutene and maleic anhydride copolymer, 1-2.5% of sodium hydroxide, 2-5% of polyvinyl alcohol, 0.1-1% of polyacrylamide, 0.5-2% of sodium carboxymethyl cellulose, 3-5% of sodium polyphosphate, 2-5% of borax, 1-2% of sodium benzoate, 0.5-1% of siloxane ketone, and the balance of deionized water. Under the action of siloxane ketone and polyvinyl alcohol, the isobutene and maleic anhydride copolymer, polyacrylamide, sodium carboxymethyl cellulose, sodium polyphosphate, borax and sodium benzoate form a surface layer with good lubricity and demolding property at high temperature, and the surface layer is non-stick to a mold, so that the production efficiency of demolding operation is improved; most importantly, under high-temperature forging, due to the water retention characteristic, particles in the components are not prone to drying to generate dust, the problem that a traditional forging release agent seriously pollutes the environment is solved, and due to the fact that graphite is not contained, stains, pits and corrosion cannot be generated on forgings, and cleaning after forging is more convenient.

The invention discloses an economical and environment-friendly external wall thermal insulating coating material and a preparing method thereof. According to the economical and environment-friendly external wall thermal insulating coating material, sodium stearate modified shell powder and hollow microsphere are adopted as main filler, adopted emulsion is water-borne fluorocarbon emulsion, and pigment is titanium dioxide; the preparing method of the economical and environment-friendly external wall thermal insulating coating comprises the steps of 1, weighing raw materials according to the mass ratios of components in the washing-resistant thermal insulating external wall coating; 2, adding the titanium dioxide, the sodium stearate modified shell powder, a wetting agent, a dispersant, a antifoaming agent and water into the water-borne fluorocarbon emulsion, afterwards grinding and dispersing evenly at a room temperature to obtain the mixture; 3, adding the hollow microsphere and a coalescing agent into the mixture, and stirring to obtain the economical and environment-friendly external wall thermal insulating coating material. The economical and environment-friendly external wall thermal insulating coating material greatly saves costs, and improves dispersing performance and thermal insulating performance of the filler, construction is convenient, and the coating has excellent comprehensive performance.

The invention provides a motor vehicle, wherein a plurality of cavity layers are arranged at the circumambience of a base cabin; the plurality of cavity layers form a cavity system; each cavity of the plurality of cavities in the cavity system is connected and communicated with each other through a connecting tube; an output tube of a refrigerating device is connected with an input hole of the cavity system; and an input tube of the refrigerating device is connected with an output hole of the cavity system.

The invention provides a heat-insulation cooling type water-based mixed paint and a preparation method thereof. The heat-insulation cooling type water-based mixed paint is prepared from the followingraw materials in parts by weight: 50-60 parts of heat-insulating acrylic emulsion, 3-8 parts of polyvinyl acetate emulsion, 15-20 parts of micron-sized titanium dioxide, 3-5 parts of superfine bariumsulfate, 1-3 parts of wet sericite powder, 2-3 parts of a dispersing agent, 0.2-0.6 part of a defoaming agent, 1-1.5 parts of a flash-rust inhibitor, 0.1-0.2 part of a pH regulator, 0.2-0.5 part of abase material wetting agent, 1.5-3 parts of dipropylene glycol butyl ether, 1.5-3 parts of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 1-2 parts of propylene glycol, 0.5-0.9 part of a shaking auxiliary agent and 2-5 parts of water; wherein the particle size of the micron-sized titanium dioxide is 1.58 [mu]m. The heat-insulation cooling type water-based mixed paint has the advantages of good heat-insulating and cooling effects, low VOC, environmental friendliness and the like, is suitable for the surface of an outdoor metal material, and plays a role in protection and cooling.

The invention discloses a novel thermal insulation system for a free jet flow force measuring test model. The novel thermal insulation system includes a force measuring balance, a supporting rod, a balance protection cover, a thermal insulation assembly and a gas cooling assembly; the force measuring balance is arranged in a mould inner cavity; one end of the force measuring balance is connected with the mould inner cavity; one end of the supporting rod is connected with the other end of the force measuring balance; the balance protection cover is arranged on the force measuring balance in a covering manner so as to realize thermal insulation protection for the force measuring balance; the thermal insulation assembly includes a thermal insulation sleeve which is arranged along the circumferential direction of the supporting rod; a sealing space is defined between the thermal insulation sleeve and the outer circumferential surface of the supporting rod; labyrinth seal components are arranged on the supporting rod at intervals so as to divide the sealing space into at least three intervals; and the gas cooling assembly includes gas jetting rings which are located in the intervals and sleeve the outer circumference of the supporting rod, and a cold gas pipeline which is communicated with the gas jetting rings, wherein the cold gas pipeline is connected with a high-pressure cold gas source, and the gas jetting rings jet out a cooling gas to decrease the temperature of the mould inner cavity. According to the novel thermal insulation system of the invention, a plurality of thermal insulation and cooling means are adopted, and therefore, the novel thermal insulation system is remarkable in cooling effect and compact in structure, and can effectively control the temperature of the balance.

The invention discloses an automobile sunshade device convenient to fix, which comprises a left partition plate, a mounting block, a folding sunshade piece and a right partition plate, one side of the left partition plate is fixedly connected with the folding sunshade piece, one side of the folding sunshade piece is fixedly connected with the right partition plate, one side of the right partition plate is fixedly connected with a fixing structure, and the fixing structure comprises a fixing plate block, a fixing suction cup and a connecting groove, and the fixing plate block is fixedly connected to one side of the right partition plate. The fixing structure is installed on one side of the right partition plate, when fixing is needed in use, a fixing plate block can be pressed against glass in a contact mode, so that contact adsorption between a fixing suction cup arranged at one end of the fixing plate block and glass wool is completed, the glass wool is firmly fixed to the glass face, the fixing suction cup is provided with multiple fixing suction cups, and adsorption is firmer. The sun-shading equipment and the vehicle body are firmly installed under the overall acting force, so that the sun-shading equipment and the vehicle body are more convenient and firmer in installation and butt joint, and use and operation are convenient and easy.

The invention relates to a low-temperature self-drying low-VOC (volatile organic compound) camouflage functional heat-insulating and cooling coating as well as a preparation method and application thereof. Comprising a component A and a component B. The component A comprises the following raw materials in parts by weight: 25-35 parts of silicon modified epoxy resin, 0.5-2 parts of aerogel, 7-15 parts of titanium dioxide, 25-35 parts of hollow microspheres, 0.5-2.0 parts of a leveling agent, 0.5-2.0 parts of a defoaming agent, 1.0-2.0 parts of a drier and 20-25 parts of a high-purity solvent. The component B comprises the following components in parts by weight: 60-70 parts of silicon modified amine cross-linked resin and 30-40 parts of a high-purity solvent; the mass ratio of the component A to the component B is (2.5: 1)-(4: 1). The coating is completely dried within 7 days at the temperature not lower than-10 DEG C, the construction VOC is smaller than 420 g / L, and the coating has good heat insulation and cooling effects under the condition of low film thickness. The coating is matched with camouflage finish paint, so that the camouflage function of visible light and near infrared rays on military equipment is met.

The invention is an ultra-high temperature long-term mechanical property testing system equipped with heat-insulated air-cooled fixtures, including ultra-high-temperature heating furnaces, heat-insulated air-cooled fixtures, transition fixtures and other components. The ultra-high temperature heating furnace is used to achieve the predetermined test temperature and its accuracy. The heat-insulated air-cooled fixture has both the heat insulation of the ceramic material and the cooling function of the airflow inside the cavity. The transition fixture mainly bears the mechanical load. The advantage of the present invention is that the structure of the ultra-high temperature long-term mechanical testing system is simple, and the temperature is always kept at a low level by rationally designing the thickness of the heat-insulating air-cooled fixture cavity and adjusting the pressure and flow rate of the cooling gas inside the cavity. Level, so that the long-term mechanical performance test of ultra-high temperature structural materials in ultra-high temperature environment can be realized by selecting ordinary superalloys.

The invention discloses a heat insulation phase change coating. The coating comprises the following components in parts by weight: 40-80 parts of double-component epoxy resin, 5-35 parts of heat dissipation filler, 5-30 parts of filler with high heat resistance and 5-25 parts of a phase change material. The heat insulation coating disclosed by the invention has the characteristics of high heat reflectivity, high heat radiation, low heat conduction, heat absorption, storage and release in a certain temperature range, multiple effects, good effects of reflecting illumination, realizing heat insulation and reducing temperature, safety, environment-friendly effect, strong adhesion and convenience in construction. The invention further discloses a preparation method of the coating.

The invention relates to a moxibustion instrument, in particular to an open flame smoke-purifying moxibustion instrument. It includes a combustion part, a drive part and an air outlet part. The combustion part, the drive part and the air outlet part are connected in sequence. In the middle of the combustion part, the outer periphery of the combustion chamber body is surrounded by the heat-insulating and air-permeable layer, the side wall of the combustion chamber body is provided with pores, the shell body includes the inner wall of the combustion chamber and the outer wall of the combustion chamber, and the heat-insulating and air-permeable layer The outer layer of the layer is bonded and fixed to the inner wall of the combustion chamber, and the outer wall of the combustion chamber is arranged outside the inner wall of the combustion chamber. The present invention classifies and filters the burnt mugwort through the sedimentation suction chamber, so that the mugwort smoke oil is adsorbed to the absorption medium on the filter element, thereby realizing the separation process of smoke and gas, and achieving the smoke-free effect of open fire.

The invention discloses an evaporating pipe type compact combustion chamber. The inner wall and outer wall of the combustion chamber and an evaporating pipe are integrally formed, so that the weight is lowered, the overall dimensions are reduced and the whole performance is improved. Inner air film holes and outer air film holes are formed in the inner wall and the outer wall of the combustion chamber separately and are both divergent air film holes, namely the hole area of the inner air film holes and the outer air film holes in one side of a flame tube is greater than that of the inner air film holes and the outer air film holes in the other side of the flame tube. Accordingly, the surficial area of the inner wall surface of the flame tube is increased, wall surface heat transfer is intensified, flow field homogeneity is optimized, combustion efficiency is improved, the temperature distribution coefficient of a combustion chamber outlet is decreased and pollutant emission is reduced.

The invention relates to a heat reflective heat insulation heavy anticorrosive paint which comprises epoxy zinc rich primer, zinc sealing agent, heat insulation intermediate coat and heat reflecting finish. The use method of the heat reflective heat insulation heavy anticorrosive paint comprises the following steps: polishing or sand blasting a workpiece to be coated, applying the epoxy zinc rich primer on the surface of the cleaned workpiece, drying, applying the zinc sealing agents, drying, applying the heat insulation intermediate coat, drying, and applying the heat reflecting finish finally, so as to finish the painting of the paint. The heat insulation time of the paint is longer; the durability can reach over 20 years; the top coat has very excellent stain resistance, self-cleaning performance and weatherability; the reflection potential of the coat is hardly influenced as time goes by, so that the heat insulation time is ensured; and the best heat insulation effect can be achieved through heat reflection, and heat resistance phase transformation heat absorption effect. Experiments prove that in hot summer, compared with a petroleum storage tank coated with common anticorrosive paint, a petroleum storage tank coated with the heat reflective heat insulation heavy anticorrosive paint provided by the invention has the advantages that the internal temperature of the tank can be reduced by 14 to 20 DEG C, and the heat insulation and temperature reduction effect is very obvious.

The invention discloses a thermal insulation cooling mechanism of an electric main shaft bearing pedestal. The thermal insulation cooling mechanism comprises an inner thermal insulation ring, an outer thermal insulation ring and a circular sleeve, wherein an annular gap is formed between the inner thermal insulation ring and mandrel; an inner thermal insulation cavity is formed between the inner thermal insulation ring and the outer thermal insulation ring; an oblique hole is formed in the front end of the outer thermal insulation ring; a cooling loop and a first penetrating hole are arranged in the electric main shaft bearing pedestal; a first cooling liquid inlet and a first cooling liquid outlet are formed in the electric main shaft bearing pedestal; an outer thermal insulation cavity is formed between the outer thermal insulation ring and the circular sleeve; a second penetrating hole is formed in the outer thermal insulation ring; a crescent groove is formed in the circular sleeve; a first axial hole is formed in the front end of the circular sleeve; and a third penetrating hole is formed in the electric main shaft bearing pedestal. The thermal insulation cooling mechanism can effectively isolate heat generated by a motor stator and a motor rotor, timely transfers the heat to the external part of an electric main shaft to realize a better thermal insulation cooling effect, and is combined with the cooling loop to cool the electric main shaft bearing pedestal so as to prevent the bearing from being overheated and protect the bearing.