88results about How to "With deformation" patented technology

The invention discloses a low-cost environment-friendly water glass wood adhesive which comprises components of 100 parts of water glass with the mass percentage of 30-60%, 10-30 parts of a water-soluble polymer, 90-270 parts of deionized water, 10-50 parts of a high polymer emulsion, 1-5 parts of advanced fatty acid salt and 2-10 parts of an inorganic solidifying agent. Simultaneously, the invention further discloses a preparation method of the water glass wood adhesive. The preparation method includes heating the deionized water, slowly adding the deionized water to the water-soluble polymer, stirring the mixture to obtain a solution, adding the water glass to the solution, evenly stirring the solution to perform an aging reaction, adding the high polymer emulsion and the advanced fatty acid salt after the aging, and preserving heat after stirring at the temperature of 40-80 DEG C; and then cooling the mixture to the temperature of 30-60 DEG C, adding the inorganic solidifying agent, and evenly mixing the mixture to obtain the low-cost environment-friendly water glass wood adhesive. The water glass wood adhesive is stable in performance, simple and easy in preparation process and widely applicable to industrialization production.

The invention belongs to the technical field of radiators, and particularly relates to a cooling fin and a cascaded caulking groove radiator. The cooling fin comprises a fin body and a bent part. At least one side edge of the fin body is provided with the bent part. The bent part comprises a first bent section, a second bent section, and a connecting section for connecting the first bent section with the second bent section. The first bent section and the second bent section are mutually separated, and the first bent section and the second bent section are mutually parallel. The cooling fin and the cascaded caulking groove radiator have the beneficial effects that according to the cascaded caulking groove radiator, as a first bent section of one fin is arranged in a mounting groove, when asecond bent section of the other fin is extruded into the same mounting groove, the second bent section achieves the effect of a wedge, the second bent section, the inner wall of the mounting grooveand the first bent section are extruded tightly, the mounting operation is convenient, and assembly is reliable and not likely to loosen; and according to the cascaded caulking groove radiator, the contact area of the fins and a base is large, transfer heat resistance is small, and therefore better cooling performance is achieved.

The invention provides a high-intensity starch-based degradation environmental protection material and a manufacturing method thereof, which relates to a rapid degradation raw material used for manufacturing disposable tableware and disposable wrappage and the manufacturing method thereof. The present disposable foaming plastic tableware has the disadvantages of hard heat insulation, complicated process line, high production cost, undesirable production quality and white pollution. The components of the product include macromolecular natural starch, polyvinyl alcohol, plant sugar, polyvinyl alcohol, a degradation control agent, a multipolymer of polycaprolactone and poly-beta-hydroxybutyrate and hexa-butyl ester hexa-butyl glycan; wherein, the starch is 51-80 weight portions, the polyvinyl alcohol is 12-20 weight portions, the plant sugar is 2-10.5 weight portions, plasticizer is 2.5-8 weight portions, the degradation control agent is 0.2-1 weight portions, the multipolymer of polycaprolactone and poly-beta-hydroxybutyrate is 5-9 weight portions and the hexa-butyl ester hexa-butyl glycan is 0.2-0.5 weight portions. The high-intensity starch-based degradation environmental protection material of the invention is used for manufacturing the disposable tableware and the disposable warppage.

The invention relates to a volcanic adhesive wood plate. Wherein, it uses volcanic beehive plate and wood plate in same length and width; boiling the wood plate at 60Deg. C for 24h; boiling it at 80Deg. C for 76-100h; drying it at 40Deg. C for 3-15days; then coating adhesive on the connecting surfaces of beehive plate and wood plate, laying it for 3-6min, and combining, cold compressing at 70-80kg / m2 for 24h; then laying it at 15-35Deg. C for at least seven days. The invention uses the adhesive without formaldehyde, with flexibility, damp-proof, fireproof, etc.

The invention discloses a multifunctional mobile phone protection sleeve, which comprises a shell assembly, a waterproof assembly, a wide-angle lens assembly, a self-defense spray assembly, an LED lighting assembly and a solar charging assembly, wherein the shell assembly comprises a soft rubber upper cover, a hard rubber upper cover and a lower cover; the soft rubber upper cover is arranged at the periphery of the hard rubber upper cover in a sleeved mode; the hard rubber upper cover and the lower cover are buckled and connected; the side surface of the soft rubber upper cover and the side surface of the hard rubber upper cover are provided with a through groove corresponding to a key and an insertion hole of a mobile phone; the waterproof assembly is embedded in the through groove correspondingly and is in interference fit connection with the through groove; the lower cover is provided with a lens groove corresponding to the lens part of the mobile phone; the wide-angle lens assembly is arranged in the lens groove; one side of the lens groove is provided with a spray hole; the spray hole is internally provided with the self-defense spray assembly; the LED lighting assembly is arranged between the lens grove and the spray hole and close to the side edge of the soft rubber upper cover and the side edge of the hard rubber upper cover; and the solar charging assembly is embedded in the lower cover. The multifunctional mobile phone protection sleeve is good in waterproof effect, multiple in function, and is provided with functions such as the wide-angle lens, solar charging, LED lighting, self-defense spray and remote control.

The invention discloses gray cast iron and a preparation method thereof, and belongs to the field of metal casting. The gray cast iron and the preparation method solve the technical problems that existing gray cast iron is high in production cost and insufficient in performance. According to the gray cast iron and the preparation method, precious metal such as copper, molybdenum, nickel and vanadium is not added, strength and hardness of castings are improved through chromium and antimony, the manufacturing cost is reduced, and performance of the gray cast iron can be improved by conducting microalloying on antimony and chromium together.

The invention discloses an anti-hydrolysis poly urethane (PU) environment-friendly sole, a manufacture method and manufacture mould thereof. The anti-hydrolysis PU elastic environment-friendly sole comprises an outsole and a PU foaming layer, an accommodating cavity is arranged on the outsole, and the PU foaming layer is formed by low density PU particles and fillers by means of foaming in the outsole, and the mass ratio of the low density PU particles to the fillers is 1:3-4. The PU foaming layer is processed and molded by means of foaming, sizing, cooling and reshaping and the like. The anti-hydrolysis PU elastic environment-friendly sole has the advantages of being abrasion-proof, environment-friendly, anti- hydrolyzing, elastic, difficult to deform, light in weight, deodorant, curable in pedopathy and the like; the anti-hydrolysis PU elastic environment-friendly sole not only solves the problems of the prior art that due to the fact that rubber is combined with the PU, soles are heavy and poor in elasticity, needs color spray, and is not environment-friendly, but also can prevent the PU from being hydrolyzed and replacing non-degradable materials such as ethylene vinyl acetate (EVA); the anti-hydrolysis PU elastic environment-friendly sole is simple in production methods and operation and low in mould cost, and greatly reduces cost of production.

The invention discloses a high temperature resistant color hydrogenated butadiene-acrylonitrile rubber material and a preparing method thereof, and belongs to the technical field of rubber. The high temperature resistant color hydrogenated butadiene-acrylonitrile rubber material is prepared from, by weight, 80-90 parts of hydrogenated butadiene-acrylonitrile rubber crude rubber, 55-65 parts of reinforcing filler, 2-3.5 parts of silane coupling agent, 5-10 parts of softening plasticizer, 5 parts of zinc oxide, 10-20 parts of Li2CO3-50 GN, 4 parts of anti-aging agent, 1-2 parts of flowing dispersing agent, 9-12 parts of vulcanizing agent, 5-7 parts of crosslinking agent and 0.8-1.2 parts of phthalocyanine green. The high temperature resistant color hydrogenated butadiene-acrylonitrile rubber material has the advantages of being excellent in temperature resistant performance and oil resistant performance, resistant to low temperature, and low in compression deformation at the same time.

The invention relates to a shell-membrane structure plugging material and a preparation method thereof in the technical field of well drilling plugging. The shell-membrane structure plugging materialis a polymer-coated shell particle plugging material obtained by grafting a hydrophobic group and a water-soluble polymer to the surface of a plant shell. The preparation method of the plugging material with the shell-membrane structure comprises the following steps: grafting a hydrophobic group and a carbon-carbon double bond to the surface of a plant shell, and carrying out emulsion polymerization on the obtained grafted modified shell particle material, acrylamide, 2-acrylamide-2-methylpropanesulfonic acid and a cationic monomer to obtain the shell-membrane structure plugging material. According to the invention, a hydrophobic group and a water-soluble polymer are grafted to the surface of a plant shell, and a hydrophobic protective film is formed on the surface of the shell, so that the water soaking resistance of the shell is greatly improved, the strength of the granular material can be greatly improved during leakage stoppage, and the problem of repeated leakage easily caused byleakage stoppage of plant shell materials is solved.

The invention discloses a plant fiber exterior wall cladding comprising a base material layer, a middle material layer and a surface material layer. The base material layer is formed by the following raw material of quick-hardening sulphate aluminum cement, coal ash, silica fume, saw dust, plant fibers, coke foam and additives; the middle material layer is made of the following raw material of quick-hardening sulphate aluminum cement, coal ash, silica fume, saw dust, plant fibers, red bricks, diatomite, carbon black, quartz, silicon carbide, magnesium oxide, burning metakaolin, bauxite and additives; the surface material layer is mainly formed by the following raw material of quick-hardening sulphate aluminum cement, coal ash, silica fume, saw dust, plant fibers, silica solution and additives. The plant fiber exterior wall cladding is characterized by great panel texture stereoscopic feeling, great durableness of textures, quick formation, short production period, great stability, properties of fire, corrosion resistance, and long durableness; and simple production technology can be achieved and batch production can be realized.

The invention relates to the technical field of knitting, and provides a knitting method. The knitting method comprises the steps that first special dotted-line weave is knitted to form a first line,special self-figure weave is knitted to form a second line, second special dotted-line weave is knitted to form a third line, third special dotted-line weave is knitted to form a fourth line, specialtucking weave is knitted to form a fifth line, special self-figure weave is knitted to form a sixth line, special double-face weave is knitted to form a seventh line, and special dotted-line weave isknitted to form an eighth line, wherein in the knitting process, at least five lines in the first to eighth lines are randomly combined to be knitted so as to form a knitting structure. The knitting structure knitted by using the knitting method has the advantages of a needle knitting structure and a machine knitting structure. The invention provides the knitting structure and a knitting fabric. The knitting structure and the knitting fabric are obvious in transverse and longitudinal pattern, flat in surface, fashionable, beautiful and not prone to deformation. The invention further provides clothing. The clothing is fashionable, beautiful and comfortable to wear, after wearing the clothing, people have no constrained feeling, and the tissue of the clothing is soft.

The invention relates to a novel wood-based composite material, and belongs to the field of composite materials. The novel wood-based composite material takes solid wood sawn timber as the base, artificial concavities used for damaging tree growth stress are machined in the solid wood sawn timber, and the solid wood sawn timber with the artificial concavities serves as the base material of the wood-based composite material. Attachments are arranged on the base material, and the attachments with different properties and the base material are combined to form the wood-based composite material. According to the composite material, the structural form and manufacturing process of existing wood are changed, part of the properties of the wood are changed or strengthened, a novel concept and process are provided for efficient use of wood plates, and the novel wood-based composite material is revolutionary enough in the field of wood plates.

The invention provides a plugging device suitable for postoperation perivalvular leakage. The plugging device comprises a fabric body and films. The fabric body is formed by a first oval area, a second oval area and a third oval area in the middle, wherein the first oval area and the second oval area are arranged on the two sides. The third oval area is shaped like a hollow oval cylinder with the ratio of a long axis to a short axis ranging from one third to two thirds. The fact that a mechanical valvula suture ring of the portion to be plugged is clamped can be used as a criterion for the thickness of the third oval area. The portion extends outwards by 0.2 mm-1 mm from the outer edge of the third oval area to form the edge of the second oval area. At least one unfolded film is arranged in a cavity in the third oval area. When the plugging device is used for plugging, the oval plugging device is arranged along a leakage point and has the deformation and self-adaptation features, after the plugging device is plugged into the leakage point, the self-adaptive deformation is generated, the leakage point is plugged completely, tension is proper, and the plugging device is more suitable for the interventional therapy of the perivalvular leakage.

The invention discloses a building demolition method using a self-expansion effect of an expansion agent. The building demolition method using the self-expansion effect of the expansion agent comprises the following steps that step 1, the number of falling layers, destruction layers and destroying layers of a building to be demolished is calculated; step 2, stand columns of the destruction layersare marked; step 3, pouring holes are formed; step 4, oil storage holes are formed; step 5, expansion agent mixtures are prepared; step 6, the expansion agent mixtures are poured; step 7, openings ofthe pouring holes are closed by sealing devices; and step 8, burning devices are arranged to burn the stand columns, the stand columns are completely destroyed, and the demolition of the building is realized. According to the building demolition method using the self-expansion effect of the expansion agent, the problems of long demolition cycle, high demolition cost and high danger can be solved,and the momentum generated by the self-weight falling from the upper part of the building is used for destroying the entire building, the demolition of the building is realized in safety and controllability modes, the demolition cycle is short, the operation is simple, the demolition cost is low, and the safety and reliability are achieved.

The technology process of processing animal's horn and hoof material includes the steps of steaming at over 100 deg.C for 7-12 hr to eliminate fat, eliminating bone, sorting material to eliminate surface layer, decoloring to eliminate black matter through soaking with hydrogen peroxide solution of 60-99 % concentration for 2-4 days, steaming for 2-5 hr to soften and extruding or stoving at 60-300 deg.c to dry, mixing with saturated resin and molding or naturally cooling to form.

The invention discloses a technological cylinder gasket for machining of cylinder holes of a cylinder body of an engine. The technological cylinder gasket for machining of the cylinder holes of the cylinder body of the engine comprises an upper cylinder gasket plane layer and a lower cylinder gasket plane layer, wherein the upper cylinder gasket plane layer and the lower cylinder gasket plane layer are stacked vertically, and are fixed integrally through rivets, air cylinder holes, installing holes and bolt through holes are formed in the technological cylinder gasket, and a thickened layer is arranged between the upper cylinder gasket plane layer and the lower cylinder gasket plane layer, and is arranged at the periphery of the air cylinder holes. According to the technological cylinder gasket for machining of the cylinder holes of the cylinder body of the engine, rigid contact between the cylinder body and a cylinder head is eliminated when the cylinder holes are machined, the situation that when assembly is carried out, deformation of the cylinder holes is caused due to tightening force of connecting bolts for connection between the cylinder body and the cylinder head is borne by the cylinder holes is really simulated, the machined cylinder holes can have higher roundness in the assembly state, abrasion between piston rings and the cylinder holes is reduced, engine oil consumption is reduced, performance of the engine is improved, and the service life of the engine is prolonged.

The invention relates to a fiber and a preparation method and application thereof, in particular to a graphene biologic diatom compound fiber and a preparation method and application thereof. The graphene biologic diatom compound fiber is prepared from, by weight, 50-60% of arenga engleri coconut short fibers, 5-10% of jute short fibers, 5-10% of bamboo carbon short fibers, 5-10% of animal hair short fibers, 1-10% of graphene, 2-10% of diatomite and 2-5% of surfactant. The preparation method of the compound fiber comprises the steps of (1) weighing and acquiring of raw materials; (2) pretreatment of the arenga engleri coconut short fibers; (3) permeation treatment; (4) mixing; (5) opening; (6) carding; (7) acquiring of finish products. The fiber can be applied to home supplies, especiallya mattress. The fiber and the mattress have the advantages of being dampproof, antiseptic, resistant to deformation, capable of preventing damage caused by worms, breathable, antibacterial, capable ofpurifying the air, removing odor, adjusting humidity through ventilation and releasing negative oxygen ions and the like.

The invention discloses a high-brightness electric baking pan heating plate and a manufacturing method thereof. The heating surface of the high-brightness electric baking pan heating plate is in a mirror structure, the back surface of the high-brightness electric baking pan heating plate is provided with air grooves for avoiding deformation and retracting ribs for avoiding cracking, wherein the air grooves are radially distributed by taking the center of the heating plate as the center, the retracting ribs are radially distributed by taking the center of the heating plate as the center, and the air grooves and the retracting ribs are arranged at intervals. The manufacturing method of the high-brightness electric baking pan heating plate comprises performing high-temperature melting, sand cleaning, casting, rough machining and finish machining on aluminum ingots to obtain the high-brightness electric baking pan heating plate. The high-brightness electric baking pan heating plate has the advantages of being high-brightness, rapid in heat conduction, deformation-resistant, anti-cracking, attractive and elegant in appearance, sturdy and durable, non-toxic, odorless, wearing-resistant, oil-repellent and waterproof; threaded dents on the surface of the high-light-intensity electric baking pan heating plate have the advantages of being non-stick, easy to clean and the like. Hazardous substances contained in metallic elements can be controlled within national standards and meet export standards.

The invention discloses plant fiber exterior wall cladding. The plant fiber exterior wall cladding comprises a backing material layer, a middle material layer and a surface material layer, the middle material layer is arranged between the backing material layer and the surface material layer, the backing material layer is mainly prepared from the following materials: quick-hardening sulphate aluminium cement, pulverized fuel ash, silicon ash, saw dust, a plant fiber, coke powder and an additive, the middle material layer is mainly prepared from the following materials: quick-hardening sulphate aluminium cement, pulverized fuel ash, silicon ash, saw dust, a plant fiber, red brick powder, diatomaceous earth, bauxite and an additive, and the surface material layer is mainly prepared from the materials: quick-hardening sulphate aluminium cement, pulverized fuel ash, silicon ash, saw dust, a plant fiber, a silica solution and an additive. The plant fiber exterior wall cladding is used as exterior wall cladding for a building, has the advantages of low carbon, environmental friendliness and energy saving, is not likely to deform, is recyclable, and has the characteristics of quick forming, short production cycle, high stability, fire prevention, corrosion resistance, high durability and the like.

The invention discloses an all-weather table tennis table-board adopting a novel material. The table-board is a multi-layer structure, and an interlayer of the table-board is a metal hollow structure;the two faces of the interlayer are covered with monolayer or multilayer metal cover plates; an inner surface layer of each metal cover plate is combined with an interlayer material, and the outer surface layers of the metal cover plates are processed by coating or film covering; and edge sealing processing is carried out on the peripheries of the table-board of the metal cover plates. Accordingto the all-weather table tennis table-board adopting the novel material, a metal material and a stable netty hollow structure are adopted, compared with a traditional table tennis table-board, the all-weather table tennis table-board has the advantages that weight stiffness is good, the intensity is high, the pressure resistance is strong, the corrosion resistance is achieved, and the aging is uneasy, the all-weather table tennis table-board cannot be affected by the humid environment, the waterproof property is excellent, the deformation is uneasy, the better flatness is achieved, the all-weather table tennis table-board can be cooperatively assembled with tables adopting different materials to form a complete table tennis table, and all indicators meet the requirements of competition andtraining.

The invention discloses an anti-corrosion and compression-resistant water tank of an air energy water heater. A spring net device is arranged in a base. An outer anti-corrosion layer is arranged on the outer surface of a tank body. An inner container is arranged inside the tank body. A vacuum layer is arranged between the inner container and the tank body. A water inlet is formed in one side of the tank body, a water outlet is formed below the water inlet, and the water inlet and the water outlet are each internally provided with a filtering device. A supporting rod is installed on the lower surface inside the inner container. The supporting rod is connected with a heating coil pipe. A heating coil pipe inlet is formed in the upper portion of one side of the heating coil pipe, and a heating coil pipe outlet is formed in the lower portion of one side of the heating coil pipe and extends out of the tank body. A tank cover is arranged on the upper portion of one side of the tank body. A galvanized plate is arranged on the outer side of a glass fiber plate, and the glass fiber plate is arranged on the inner side of an inner plate. The anti-corrosion and compression-resistant water tank of the air energy water heater has the advantages of being environmentally friendly, capable of saving energy, high in strength, good in toughness, free of deformation, reasonable in structure and long in service life.

Recorded is the high-performance gear for saving lubricating oil. The high-performance gear includes gear itself and multiple gear teeth in uniform distribution on the gear itself. The position on the lateral wall of the gear itself, corresponding to the installation of the gear teeth, is equipped with a holding tank of the lubricating oil. The gear teeth are lengthways equipped with an oil-guided pipe connected with the holding tank of the lubricating oil. A block shell covering the oil-guided pipe is set up on the outside surface of the gear teeth and is equipped with an oil outlet hole. A sponge is set up in the oil-guided pipe for absorbing the lubricating oil. The lubricating oil is poured into the holding tank of the lubricating oil. Then, the lubricating oil would enter into the oil-guided pipe and be absorbed by the sponge. When the gear is not working, the lubricating oil absorbed in the sponge will not flow out of the oil outlet hole in the block shell. Only when the gear is running, the lubrication oil in the sponge will be thrown under the action of centrifugal force. Thus, the energy is greatly saving without unnecessary waste of the lubricating oil.

The invention provides a porous plastic crystal compound. The porous plastic crystal compound has a porous morphology formed by stacking sphere-like particles; wherein the plastic crystal comprises succinonitrile. The invention provides a porous plastic crystal compound, which has the characteristics of good stability, high ionic conductivity, adjustable porosity and the like and is applied to anall-solid-state metal-air battery. The porous plastic crystal compound serves as an electrolyte interlayer and is introduced into a solid-state positive electrode; the interface impedance between theelectrolyte interlayer and the electrode can be effectively reduced; besides, due to the adjustable porosity, gas diffusion is not hindered while tight contact with the active material is realized byintroducing into the solid-state positive electrode; according to the invention, the three-phase interface is effectively increased, reaction sites are increased, the problems of high interface impedance and few positive electrode three-phase interfaces of an existing metal-air battery are solved, and the electrochemical properties such as the discharge capacity of the all-solid-state lithium-oxygen battery are improved.

The invention relates to a special teaching aid for teaching, in particular, an aluminum-nickel alloy V-shaped groove through hole rotation angle co-planar teaching triangular ruler. The lower surface of a sliding part is a sliding lower plane; the upper surface of an edge ruler part is an edge ruler upper plane; a sliding through hole is formed in the sliding lower plane; an edge step hole is formed in the edge ruler upper plane; the sliding lower plane is provided with a V-shaped protruding rail; the edge ruler upper plane is provided with a V-shaped groove; rotation angle view holes are formed in the edge ruler upper plane; the inner side of the edge ruler upper plane is provided with a scale slope; length scales are engraved on the scale slope; a shaft pin rivet passes through the sliding through hole and the edge ruler step hole, so that the sliding lower plane can be in sliding lap joint with the edge ruler upper plane through the shaft pin rivet; and the edge ruler upper plane is provided with rotation angle scales which are corresponding to the rotation angle view holes in the sliding lower plane. With the aluminum-nickel alloy V-shaped groove through hole rotation angle co-planar teaching triangular ruler adopted, a rotation angle between the sliding part and the edge ruler part can be controlled conveniently and intuitively. The aluminum-nickel alloy V-shaped groove through hole rotation angle co-planar teaching triangular ruler is advantageous in variability in demonstration size and angle.

The invention provides an imitation quartz stone cabinet table-board plate. The cabinet table-board plate comprises the following components in parts by weight: 0.8-1 part of cement, 0.2-0.4 part of fly ash, 0.25-0.4 part of quartz powder, 1.1-1.3 parts of quartz sand, 0.04-0.1 part of PE (poly ethylene) fiber and 0.05-0.07 part of an additive. A preparation process of the imitation quartz cabinet table-board plate comprises the following steps: material mixing, material distributing, forming, demoulding, steam-curing, cutting, thickness setting, rough polishing, osmosis treatment, fine polishing, inspection, package and warehousing. With the adoption of the technical scheme, the imitation quartz cabinet table-board plate has the advantages that the imitation quartz cabinet table-board plate is lighter than a stone, and the weight of the imitation quartz cabinet table-board plate is less than 1 / 5 of that of the natural stone; the imitation quartz cabinet table-board plate is healthy and environment-friendly, durable, quick in manufacture, low in cost and high in produce grade and has the characteristics of being free of toxicity and deformation and resistant to high temperature.

The invention discloses a double-capsule variable stiffness gas spring for an automobile suspension, and relates to the technical field of gas springs. A first oil conveying hole path is longitudinally formed in the inner bottom end of a gas spring inner cylinder, and the first oil conveying hole path is not through on the gas spring inner cylinder; a second oil conveying hole path is formed in the outer bottom end of the gas spring inner cylinder, and the second oil conveying hole path is also not through; a transverse oil conveying hole path is formed in a side surface of the gas spring inner cylinder; the transverse oil conveying hole path communicates the first oil conveying hole path with the second oil conveying hole path; a sealing plug is connected to an outer port of the transverse oil conveying hole path; a blocking sealing plug is connected to an outer port of the second oil conveying hole path, so that the problems that the purposes of absorbing shock and the like are achieved by using transmission change of oil in the conventional gas spring, but when the internal oil is used, the pressure at the conventional oil outlet changes greatly, and an oil sealing structure atthe oil port is common in pressure resistance and is easily damaged are solved.

The invention provides a novel protective device for medical cold chain equipment. The novel protective device is arranged on a cold chain transport case, and comprises an inner protective part and anouter protective part, the inner protective part comprises an inflatable airbag matched with the volume of inner space of the cold chain transport case, the inflatable airbag is arranged at the innerside of a top cover of the cold chain transport case, the inflatable airbag comprises a rubber inner layer, a cotton middle layer and a heat conduction outer layer, and the heat conduction outer layer is metal aluminum foil in parallel or latticed arrangement; the outer protective part comprises strip-shaped airbags arranged along each edge of the cold chain transport case, and the strip-shaped airbags are communicated with one another on the corners of the cold chain transport case; the inflatable airbag is connected with a cold air outlet of air conditioning equipment, the strip-shaped airbags are externally connected with an air pump, the inner protective part is used for fixing specific articles placed in the transport case, and the outer protective part is used for stabilizing and protecting a case body.

The invention discloses asbestos packing for mechanical sealing and a preparing method of the asbestos packing. An adhesive layer is arranged on the surface of the packing in a permeating manner, and adhesives are rubber-class adhesives. The preparing method of the asbestos packing includes the following steps: 1, common asbestos packing is placed in a vibrator to vibrate in an intermediate-frequency manner or manually beaten or rolled, the surface layer of the packing is vibrated and fluffed, the width of the fluffed packing is 1 mm to 3 mm larger than the original size, and a loosing layer is formed on the surface of the packing accordingly; 2, the fluffed asbestos packing is placed in chlorinated hydrocarbon to be soaked for 30 minutes to 60 minutes to enable the loosing layer of the packing to be completely immersed by the chlorinated hydrocarbon; 3, the chosen adhesives are heated to be in the fused state, the packing obtained in the step 2 is taken out from the chlorinated hydrocarbon and directly submerged in the adhesives for 1 hour to 2 hours, and the packing is taken out and cooled; and 4, the packing taken out from the adhesives is placed in xylol or methylbenzene to be soaked for 20 minutes to 30 minutes, and the packing is taken out and aired for standby application.

The invention discloses a metal plate punching machine tool with an automatic fastening and clamping function. The metal plate punching machine tool with the automatic fastening and clamping functioncomprises a middle connecting rod, a through buffering inner cavity is formed in the middle connecting rod, through moving cavities are formed in the top of the middle connecting rod, the moving cavities are symmetrically arranged, Cutting-off and bending devices capable of being switched between a bending mode and a cutting-off mode are arranged in the moving cavities and the buffering inner cavity, a bottom seat is rotationally arranged in the middle connecting rod, a gear ring is arranged at the top of the middle connecting rod, an internal connecting motor is arranged in the bottom seat, and a meshing gear is arranged on one side of the internal connecting motor in a power connection mode. According to the equipment, a plate can be placed in the equipment, the plate can be switched back and forth between punching and cutting, excessive deformation of the plate can be prevented, and a placing platform can incline and tilt after the plate is punched.