36results about How to "Good heat absorption" patented technology

The invention relates to the polyacrylonitrile and the producing process. The weight percent of the adjusting temperature is showed below: the acrylonitrile 30.0-92.5%; the second monomer 2.5-20.0%; the chain transferring reagent 0.03-0.3%; the solicitation reagent 0.05-0.4%; phase changing material tiny capsule 5.0-50.0%. the producing process adopts the said adjusting fiber material, the solicitation reagent is used to bring the second monomer and the existing possibly third monomer and the water phase deposit of the chain transferring reagent to converge in the phase changing material tiny capsule hanging chaotic liquid, the polymer produced form the action contains the said percentage of the phase changing material tiny capsule, the mixing hybrid of the acrylonitrile sharing material and the phase changing material tiny capsule is gained; the gained equal hybrid is cleaned by the secondary or thrice ion water and dried under the temperature of 45-95 degree, the filature is melted under the temperature of 10-40 degree above the melting point of the acrylonitrile gathering material in the screw extruding engine to produce the said adjusting temperature fiber. The said adjusting temperature fiber has many merits such as the good function of absorbing or releasing the heat energy, the high machine intension and the low cost.

The glass substrate optical reading infrared sensor features in the light through but infrared blocked glass substrate, side support flat beam unit with two sets of thermal deformation mechanism at both sides of the infrared absorbing plate, baffling distributed through the heat insulation beam and thermal deformation beam. The thermal deformation mechanism connected to both sides of the infrared absorbing plate with its inner side, with the outside end beam fixed on the glass substrate through the anchor erect. The heat insulation beam is nonmetallic film, the heat deformation beam is dual material beam formed on the nonmetallic film coated on the metal film, infrared absorbing plate having its reflective surface facing the glass substrate, visible light passing through the glass substrate projected on the reflective surface, with the infrared light directly projecting on the other side. It eliminates the frame structure, alleviates the dimensional conflict on the same flat layer due to the heat deformation mechanism and the infrared absorbing plate, effectively improving the super infrared detection sensitivity.

The invention relates to a solar thermal collector, which comprises an upper substrate, a lower substrate, a heat absorbing layer, a frame bracket and a plurality of supports, wherein the upper substrate and the lower substrate are arranged oppositely; the frame bracket is arranged between the upper substrate and the lower substrate; the upper substrate, the lower substrate and the frame bracket form a cavity together; and the heat absorbing layer is arranged on the upper surface of the lower substrate positioned in the cavity. The plurality of the supports are arranged in the cavity at intervals, and are contacted with the upper substrate and the heat absorbing layer respectively. The heat absorbing layer has a carbon nano tuber structure.

The invention discloses a smoke suppression type dry powder extinguishing agent. The smoke suppression type dry powder extinguishing agent comprises, by weight, 60-70 parts of ammonium phosphate, 10-15 parts of bentonite, 12-14 parts of aluminium hydroxide, 8-9 parts of magnesium hydrate, 2-4 parts of C6-Fluoroketone, 2-3 parts of diphosphopyridine nucleotide, 2-3 parts of nitric acid dyhydroxy bismuth, 2-3 parts of graphite powder and 1-2 parts of inorganic silica gel. The invention further discloses a preparation method of the smoke suppression type dry powder extinguishing agent. By means of the dry powder extinguishing agent, the defect that an existing dry powder extinguishing agent is used for putting out of fire, the amount of smoke is large can be overcome.

The invention discloses a method for leaching spodumene based on combination of a microwave and a pressure field, and belongs to the production technology field of lithium salt extracted from spodumene in chemical metallurgy. The method comprises the steps of (1) grinding ore; (2) transforming an out-field irradiation crystal form; (3) pressure leaching; and (4) separating and purifying. Accordingto the technical scheme, microwave irradiation is adopted on the spodumene, so that a crystal form transformation temperature range is expanded; and then a direct sulfuric acid leaching process is carried out on the irradiated spodumene, valuable metals such as lithium are leached into lithium sulfate under the conditions of heating and pressurizing, then the lithium sulfate is separated and purified, a solution is recovered, and a final product i.e. the lithium salt is obtained, so that an application range of a complicated spodumene raw material is further expanded. The technical scheme hasthe advantages of short flow, energy conservation, emission reduction, excellent current joining process and the like.

The invention discloses a rotating disc type quick drying device for grains. The rotating disc type quick drying device for grains comprises a plurality of rotating discs, wherein the inner diameters of the rotating discs are sequentially increased from top to bottom, a vertical rotating shaft integrally penetrates through the central positions of the rotating discs and is divided into multiple equal-height shaft sections by the rotating discs, and a circle of automatic rotating stirrers are arranged on each shaft section; the bottom of the vertical rotating shaft is arranged in a bearing, a rotating block is further arranged on the vertical rotating shaft, the bearing is arranged on the base, a motor in drive connection with the rotating block is arranged on the base, and a feeding mechanism is further arranged above a rotating tray on the uppermost layer. The drying device is simple in structure, wide in application range, suitable for airing on rainy days and sunny days, high in airing efficiency and good in heating effect; the drying property of grains is uniform, and the molding phenomenon cause by failure of timely drying is avoided.

The invention discloses an explosion-proof motor which is safe to use, which comprises an explosion-proof casing, the two ends of the explosion-proof casing are respectively fixedly connected with a front end cover and a rear end cover, a stator is arranged inside the explosion-proof casing, and a cavity is left inside the stator , and the cavity is provided with a rotor, the outer surface of the rotor is provided with a rotor coil, the rotor is connected to the shaft through a ball bearing, the inner wall of the explosion-proof shell is provided with a black chrome coating plate, and the outer side of the black chrome coating plate is provided with a There is a gap between the aluminum alloy plate, the black chrome coated plate and the aluminum alloy plate, and a water delivery pipe is arranged in the gap, a water storage tank is arranged outside the explosion-proof shell, and a first water pump is arranged on one side of the water storage tank. The safe explosion-proof motor should be used to conduct the heat absorbed by the black chrome coating plate in time, so as to achieve a good heat dissipation effect, avoid heat accumulation in the explosion-proof shell, and avoid accidents, thereby reducing the internal temperature of the explosion-proof motor. To ensure the safe use of explosion-proof motors, the structure is relatively simple.

The invention relates to a heat-absorbing coating for a solar metal inner liner. The heat-absorbing coating comprises the following components in parts by weight: 40-50 parts of ferric oxide, 10-15 parts of tetrafluoroethylene powder, 10-15 parts of selenium cadmium sulfide, 10-15 parts of manganese dioxide, 70-80 parts of single-component polyurethane resin, 80-90 parts of thermosetting acrylic resin, 5-10 parts of cobalt naphthenate solution, 40-50 parts of n-butanol, 30-40 parts of xylene and 15-20 parts of calcium chloride. The solar energy absorption rate of the product is 95%-98%, the emission rate is 15%-18%, and the heat collection efficiency of the solar metal inner liner is greatly improved; the heat-absorbing coating further has the advantages of wear resistance, resistance to acid and alkali corrosion and excellent heat absorption effect; the product further has the advantages of heat resistance, cold resistance and long service life, and can be widely produced and used for continuously replacing existing materials.

The invention belongs to the technical field of concrete admixtures, and particularly relates to a hydration heat regulation composition, as well as a preparation method and application thereof. The hydration heat regulation composition provided by the invention is mainly prepared from a cationic-type acrylic resin, an amino resin, epoxy phosphate, tartaric acid and modified diatomite. According to the prepared hydration heat regulation composition, the release of hydration heat can be effectively inhibited, and hydration speeds in different stages during a cement hydration process can be regulated and controlled at different degrees, so that an effect of reducing the total heat release at an early stage is achieved; meanwhile, the production of hydration heat can be continuously reduced,the phenomenon of concrete cracking can be effectively reduced, and the durability and the safety of concrete components are improved.

The invention discloses a solar water heater convenient to adjust and install. The solar water heater comprises a body, telescopic rods, first clamping grooves, a base, fixing holes, evacuated collector tubes, slide rails and installing holes. First supports are connected to the lower portion of the body, first rotary shafts are installed on the upper portions of the first supports, second supports are installed on the right sides of the first supports, the evacuated collector tubes are installed in the body, second springs are connected inside first installing blocks, the slide rails are arranged below the second supports, fixing grooves are formed in the left sides of sliding blocks, second fixing rods are arranged on the right sides of the fixing grooves, and the installing holes are formed in the upper portions of the evacuated collector tubes. The solar water heater convenient to adjust and install is provided with the second supports with adjustable height, sawtooth strips of thetelescopic rods are meshed to drive the telescopic rods to stretch and retract upwards while drive strips are rotated, accordingly, the aim that the telescopic rods stretch and retract is realized, the overall height of the second supports is convenient to adjust, and the solar water heater is wider in application range.

The invention discloses a solar-power heat absorbing coating. The solar-power heat absorbing coating is prepared from the following components in parts by weight: 35 to 55 parts of acrylic resin, 20 to 28 parts of amino resin, 10 to 15 parts of fluorocarbon resin, 5 to 10 parts of light absorbent, 7 to 12 parts of leveling agent, 8 to 12 parts of carbon black, 7 to 10 parts of graphene, 5 to 12 parts of titanium dioxide, 5 to 10 parts of polyethylene glycol, 7 to 9 parts of barium sulfate, 5 to 10 parts of brominated paraffin, 8 to 13 parts of nano-titanium nitride, 1 to 6 parts of methyl silicone oil, 3 to 7 parts of manganese dioxide, 4 to 9 parts of ferric oxide, 3 to 8 parts of chromium oxide green, 4 to 8 parts of attapulgite, 2 to 7 parts of calcined kaolin, 1 to 10 parts of silane coupling agent and 1 to 5 parts of photoinitiator. The prepared solar-power heat absorbing coating has the characteristics of non-toxicity, tastelessness, flame retardancy, easiness and convenience in construction, good heat-absorbing effect and the like; the sunlight absorption rate can be increased greatly, so that the photothermal conversion efficiency of solar energy is increased; moreover, the coating has high weather resistance, and the service life of the coating is prolonged.

The invention discloses an instant ice bag for nationwide fitness programs and sport medicine, belonging to the technical field of ice bag design. The instant ice bag comprises an outer plastic bag, a coolant, an inner plastic bag and water liquid, wherein the water liquid is sealed into the inner plastic bag; the coolant and the inner plastic bag filled with the water liquid are sealed into the outer plastic bag; water liquid in the inner plastic bag is separated from the coolant through the inner plastic bag. The instant ice bag is characterized in that the coolant is a particle material prepared by stirring and mixing ammonium nitrate and urea; the inner plastic bag is a thinner bag body; the weight ratio of the coolant to the water liquid in the inner plastic bag is 1:1; the weight percentages of two components, namely the ammonium nitrate and urea in the coolant are respectively 75% and 25%; the water liquid is packed into the inner plastic bag in a hot melting and press fit mode; a fixed belt is also arranged, one end of the fixed belt is fixedly connected with the inner plastic bag, and the other end is fixedly connected with the outer plastic bag. The instant ice bag disclosed by the invention has a reasonable and simple structure, is easy to produce and manufacture, and is convenient to use and carry.

The invention relates to a gasifier. The liquefied natural gas gasifier detachably connected with internal and external heat exchange sheets comprises a gasification tube and a conveying pump which is connected with the inlet end of the gasification tube and is adjustable in conveying speed; the gasification tube comprises at least two gasification sections of straight line structures; and the gasification sections and bending sections are arranged at intervals to form a folding-back structure. A plurality of internal heat exchange sheets are connected into the gasification sections in a pluggable manner, and a plurality of external heat exchange sheets are connected with the outer side of the gasification sections in a pluggable manner. According to the liquefied natural gas gasifier detachably connected with the internal and external heat exchange sheets, the gasification effect is good and adjustable, the gasification effect can be achieved according to needs, and the gas conveying speed can be adjusted according to needs; and the problems that an existing liquefied natural gas gasifier is not adjustable in gas conveying speed and poor in gasification effect are solved.

A bath water waste heat recoverer comprises a heat exchanger formed by a plurality of heat exchange branches manufactured by bending metal tubes. The heat exchanger is divided into a left heat exchanger and a right heat exchanger, the left heat exchanger and the right heat exchanger are of a parallel-connection structure, the heat exchange branches at the water outlet end of the left heat exchanger and the heat exchange branches at the water outlet end of the right heat exchanger are adjacent and connected with a water outlet, the heat exchange branches at the water inlet ends are communicated through a connecting pipe, a water inlet is formed in the connecting pipe, and the water inlet is communicated with a water source. The bath water waste heat recoverer further comprises a heat exchanger base, the heat exchange branches at the water outlet end of the left heat exchanger and the heat exchange branches at the water outlet end of the right heat exchanger are arranged in a central groove, other heat exchange branches of the left heat exchanger and other heat exchange branches of the right heat exchanger are embedded into a lateral water tank, and the connecting pipe is embedded into a communicating groove. By means of the structure, bath water can enter the central groove and pass through the lateral water tank to be drained out by the communicating groove, and the heat exchange branches of the left heat exchanger and the heat exchange branches of the right heat exchanger can absorb waste heat of the bath water repeatedly from the central groove, the lateral water tank and the communicating groove. Thus, the heat absorbing effect is good, and waste heat can be fully utilized.

The invention discloses a filter capable of reducing a cigarette smoke temperature and a manufacturing method thereof. The filter comprises an inner core and a protective film, the inner core is madeof a water-absorbing superabsorbent material, the protective film is of a double-layer structure, an inner layer film is a brittle film, an outer layer film is a flexible porous film, two ports of theinner layer film and the outer layer film are sealed, the outer layer film wraps the inner layer film, and the inner layer film wraps the inner core. The filter has a simple structure, a wide range of materials, low price and low cost, and can effectively reduce the temperature of a flue gas and the content of harmful components. The manufacturing method is simple, the operation is convenient, and the production cost is low.

The invention relates to environmentally-friendly snow-melting antiskid particle, and belongs to the field of snow melting and skid resistance of ice-snow roads. Straw ash and straw residues are usedas main raw materials of the snow-melting antiskid particle, cement is used as an inorganic gelling agent, and urea, phosphate and acetate are added as snow-melting agents to prepare the novel snow-melting antiskid material so as to solve the problem of vehicle slipping caused by snowfall of roads in winter. The particle size of the snow-melting antiskid particle is 1-3 cm, and small particles formed after the snow-melting antiskid particle is rolled by a vehicle have an excellent antiskid effect. The black straw ash and straw residues can absorb heat easily, so melting of a snow ice layer isaccelerated under the action of a snow-melting agent, and the threat of the smooth ice and snow road surface to traffic safety is relieved. Besides, the straw ash, straw residues, urea and phosphate flowing into green belts at two sides of a road or surrounding farmlands along with molten snow can provide potassium, nitrogen and phosphate fertilizers for growth of plants in order to promote growthof green belt plants or crops, and the particle has a good ecological environmentally-friendly effect.

The invention belongs to the technical field of electrical automation and discloses a multifunctional electric automation equipment mounting base and a using method thereof. The multifunctional electric automation equipment mounting base is provided with two mounting plates, the mounting plates are provided with a plurality of bolt holes, a supporting plate is arranged between the two mounting plates, the supporting plate is provided with a shock absorbing structure which is provided with a heat dissipating structure, the heat dissipating structure cools fan blades, and the heat dissipating structure is provided with a mounting structure capable of adjusting a distance. According to the invention, while the distance of the base can be adjusted, the advantages of heat dissipation and shockabsorption are achieved, the problem that existing electrical automation equipment installation base does not have a heat dissipation function is solved, therefore, when the electric automation equipment mounting base is used, the burning of electric automation equipment is prevented, the service life of the electric automation equipment is prolonged, and different electric automation equipment can be loaded at the same time.

The invention relates to a heating energy-saving cooker used in frying, boiling, stewing and red cooking and the like of kitchen cooking, in particular to a special heating energy-saving cooker for a big pan stove during cooking, boiling and stewing, and concretely relates to an energy-saving type big pan, which comprises a pan body, wherein a layer of copper plate layer is arranged on the bottom of the pan body; a layer of aluminum plate layer is also arranged on the bottom part of the copper plate layer; vertical fins are also adhered to the bottom part of the aluminum plate layer, are arrayed in a bending-shaped radiating type in multiple sections on the aluminum plate layer, and extend to the circumferential direction of the surface of the hemispheric bottom part of the pan body from the center of the aluminum plate layer until extending to the middle part of the pan body; a protection ring is arranged on the outer side ends of the fins. The invention provides the energy-saving big pan, the bottom part of the big pan is heated uniformly, heat can be transferred quickly, food in the pan is not easy to stick, and the problems that as the existing commercial big pan is low in heat efficiency, slow in heating speed, and nonuniform in heating area, the food in the pan is easy to stick to the pan bottom are solved.

An anti-reflective film for a solar cell panel comprises a hollow silicon dioxide layer, a composite silicon oxide layer, a waterproof layer and a wear-resistant layer. The anti-reflective film is prepared by sequentially spraying and drying the hollow silicon dioxide layer, the composite silicon oxide layer, the waterproof layer and the wear-resistant layer. The anti-reflective film has the beneficial effects that (1) the solar coating simultaneously has favorable heat absorption performance and waterproof performance, reflection of sunlight is effectively reduced, and the absorption rate ofthe solar cell panel on solar irradiation is improved; and (2) by Al<2>O<3>-Cu nanometer composite powder contained in the wear-resistant layer, the wear-resistant property and the hardness of the solar cell panel coating layer are finally improved.

The invention discloses a cereal grain drier which comprises a top tray, a bottom tray, and a plurality of middle trays arranged between the top tray and the bottom tray, wherein the inner diameters of the top tray, the middle trays and the bottom tray are increased from the top down in sequence; a vertical rotating shaft is integrally arranged in the central positions of the top tray, the middle trays and the bottom tray; the bottom of the vertical rotating shaft is arranged in a bearing; a rotating block is also arranged on the vertical rotating shaft; the bearing is arranged on a base; a motor in transmission connection with the rotating block is arranged on the base; a feeding mechanism is arranged above the top tray. The cereal grain drier has the advantages of simple structure and wide adaptability, and is suitable for drying in not only cloudy days and rainy days, but also sunny days, so that the drying efficiency is high; the dryness of cereal grains dried with the cereal grain drier is uniform; the moldy phenomenon caused by failure of timely drying is avoided.

The invention relates to a coating, in particular to a heat-absorption anticorrosive energy-saving coating, a preparation method thereof and a use method of the coating. The coating comprises, by weight, 10-30 parts of boron nitride, 20-40 parts of corundum, 20-40 parts of brown aluminum oxide, 10-20 parts of talcum powder, 5-10 parts of graphene, 10-30 parts of iron oxide red, 10-30 parts of ironoxide black and water glass solvents. The preparation method of the coating includes the steps: placing the materials into a container according to proportion; uniformly mixing the materials; gradually and slowly adding triple water glass solvents; stirring mixture for 4-6 minutes when the water glass solvents are added. The use method of the coating includes the steps: cleaning up coated surfaces; coating or spraying the surface with 0.1-0.3 millimeters of the coating. The coating is good in heat-absorption effect and high in anticorrosive function, the service life of a boiler can be prolonged, and heat conduction is facilitated.

The invention discloses an auxiliary heat dissipation device of electronic equipment. The auxiliary heat dissipation device comprises a heat dissipation box and an air suction fan arranged at the topof the heat dissipation box; an installation groove is formed in the top of the heat dissipation box, and the air suction fan is installed at the top of the installation groove; fan blades of the airsuction fan are arranged in the heat dissipation box, the top of the heat dissipation box is fixedly provided with a cylinder, and the lower end of the cylinder is connected with a hollow disc; a round opening is formed in the top of the hollow disc, the cylinder is fixed to the round opening, and the cylinder and the hollow disc are integrally formed; a plurality of connectors are arranged at thebottom of the hollow disc, and hoses sleeve the connectors; the upper portion in the heat dissipation box is provided with a sliding base, and the top of the sliding base is symmetrically provided with two sliding rails which are parallel to each other; a placing plate is slidably arranged on the two sliding rails, a heat dissipation opening is formed in the heat dissipation box on the side faceof the sliding base, and a placement door is hinged to the heat dissipation opening. The device is simple in structure, ingenious and reasonable in design, good in heat dissipation effect and worthy of popularization.

The invention discloses a see-through heat-isolating and insulating curtain board. The see-through heat-isolating and insulating curtain board comprises a transparent polyester fibreboard, wherein a black polyvinyl chloride layer is adhered on the polyester fibreboard through an adhesion layer, a polyester film layer is adhered on the polyvinyl chloride layer through an adhesion layer, an aluminum layer is adhered on the polyester film layer through an adhesion layer, a plurality of through holes communicated with one another are respectively formed in the black polyvinyl chloride layer, the polyester film layer and the aluminum layer, the diameters of the through holes are 0.5mm-1.5mm, and the distances among the adjacent through holes are 0.5mm-1mm. With the see-through heat-isolating and insulating curtain board, the costs of the air-conditioning and illumination devices of residents are reduced.

The invention discloses a sensing device, which comprises a panel, a base and a temperature sensor. An illuminating lamp is arranged at the middle position of the front surface of the panel, the illuminating lamp is fixedly connected with the panel, and a lamp holder is arranged on the periphery of the panel. The lamp holder is fixedly connected with the panel, a warm lamp is arranged on the uppersurface of the lamp holder, and the warm lamp is fixedly connected with the lamp holder. A mounting plate is arranged on the outer side wall of the panel, and the mounting plate is fixedly connectedwith the panel. The temperature sensor which penetrates through the panel is fixed on the clamping seat, and a probe of the temperature sensor is located at the bottom of the panel. As the probe and the warm lamp are located on the same plane, the probe can directly receive the temperature signal of the probe, and a metal support and a heat absorption surface are arranged at the outer side of theprobe. As the metal support and the heat absorption surface have good heat absorption effect, the capability of receiving the temperature signal by the probe is further improved, and the phenomenon that the probe is not sensitive is avoided.

The invention discloses a preparation method of energy-saving anti-ultraviolet polytrimethylene terephthalate. The preparation method is characterized by comprising the following steps: a first-stageesterification reaction: adding purified terephthalic acid, propylene glycol, an auxiliary agent containing a stabilizer and a titanium catalyst loaded with metal ions, and a titanium compound selected from at least one of nano titanium nitride, nano titanium oxide and nano zinc titanate into a polymerization kettle; replacing air in the polymerization kettle with inert gas, controlling the pressure in the polymerization kettle to be 0.1-0.4 MPa, controlling the rotating speed of the stirrer to be 50-120 r/min, controlling the temperature in the polymerization kettle to be 120-230 DEG C, calculating the esterification efficiency according to the water yield, and ending the esterification reaction when the conversion rate of terephthalic acid reaches 90-100%. The polytrimethylene terephthalate prepared by the method has excellent energy-saving and anti-ultraviolet properties, and also has the advantages of being not easy to degrade and good in color and luster.

The invention discloses a novel energy-saving boiler. The novel energy-saving boiler comprises a water tank, first flues, a second flue, at least one sound speed heating rod and a burner, wherein the water tank is of a cuboid cavity structure, a liner filled with clear water is arranged in the middle of the water tank, and the sound speed heating rods are vertically installed in the liner and protrude out of the bottom of the liner; the first flues are vertically installed in the liner and located at the two sides of the sound speed heating rods, the second flue is installed in the middle of the top of the water tank, and the burner is installed on the lower portion of the water tank and located below the sound speed heating rods. In this way, vapor generated by the novel energy-saving boiler is suitable for serving as steam energy required in various industrial fields; only 20 m<3> gas is needed to heat 3 t water to obtain a steam pressure of 3 MPa, energy is saved by 60% compared with the prior art, and the purposes of obtaining a high heating speed and a good heat absorption effect, saving energy and protecting the environment are realized.

The invention relates to a heat collecting device. The heat collecting device is characterized by comprising a water storage box and a heat exchange pipeline network, the water storage box is providedwith at least two water storage chambers, a heat preservation board partition is arranged between the two water storage chambers, one water storage chamber is provided with a water pump, the water pump is connected with a water inlet of the heat exchange pipe network through a water conveying pipeline, a water outlet of the heat exchange pipe network is connected with the heat exchange pipe network through a water conveying pipeline, the heat exchange pipe network is composed of multiple heat exchange branch pipes which are side by side, and each heat exchange branch pipe comprises at least two heat exchange micro-pipes which are arranged in parallel. The heat collecting device has the capacity to further utilize energy and achieves the energy saving purpose, heated water can be used as awater source of a kitchen or drinking boiled water, when the heated water is heated again, consumption of part of electricity energy and the like can be reduced, and energy is saved.

The invention discloses a heat absorbent for solar water heaters and a production method. The heat absorbent for the solar water heaters is prepared from the following raw material components according to a weight ratio: 20 to 30 of carbon powder, 2 to 8 of zinc powder, 15 to 25 of titanium dioxide, 10 to 15 of aluminium silicate, 7 to 14 of calcium chloride, 3 to 8 of polyvinyl alcohol, 5 to 10 of calcium carbonate and 5 to 10 of sodium silicate. After the materials are mixed according to the weight of each component, 5 to 10 of materials and 90 to 95 of water are uniformly stirred for dilution, so that the heat-absorbing material for the solar water heaters is produced. According to the invention, the heat absorption rate is high, and the heat absorption effect for sunlight is ideal. Theheat absorbent for the solar water heaters is durable, having a long service life which is prolonged by 30 percent or more. The application range is wide, and the invention is easy to popularize.

The invention discloses an auxiliary sprayer for external air cooling of a direct-current converter station, and the auxiliary sprayer comprises a converter valve shell in which a converter valve is mounted, and further comprises an air cooling cabinet, a pumping device, a water cooling device, an air cooling device and a driving device.The auxiliary sprayer has the beneficial effects that the driving device provides power for the pumping device and a fan blade group, and the fan blade group is driven by the driving device to drive the fan blade group to rotate; when the pumping device on the left side works, cooling oil is driven to flow in the water cooling device, the cooling oil absorbs heat in a converter valve shell at the position of the heat absorption pipe, when the pumping device on the right side works, cooling water is pumped to the position of the water distribution frame, and cold air is blown to the water distribution frame through rotation of the fan blade set. And cold air is mixed with water on the water distribution frame to be in an atomized state and acts on the cooling pipe, so that the cooling oil liquid can be well cooled at the position of the cooling pipe, the cooling oil liquid entering the heat absorption pipe has a lower temperature, and a good heat absorption effect is achieved.

The invention relates to the technical field of servo motors, and discloses a dustproof heat dissipation shell for a servo motor, the dustproof heat dissipation shell comprises a heat dissipation box and a motor body, the motor body is fixedly installed on the bottom surface in the heat dissipation box, the right side of the motor body is fixedly connected with a heat absorption plate, and the right side of the heat absorption plate is fixedly connected with two heat conduction rods. The right ends of the two heat conduction rods penetrate through and are fixedly connected to the outer side of the heat dissipation box, the right ends of the two heat conduction rods are fixedly connected with cooling fins, a water cooling device is arranged on the right side of the heat dissipation box, the cooling fins are located in the water cooling device, the left side of the interior of the heat dissipation box is fixedly connected with an air inlet pipe communicating with the left side of the interior of the heat dissipation box, and the left side of the interior of the heat dissipation box is fixedly connected with an air outlet pipe. A first fan is fixedly mounted on the left side of the heat dissipation box and fixedly connected to the bottom end of the air inlet pipe. According to the servo motor cooling device, a good cooling effect can be achieved for the servo motor, meanwhile, dust entering is reduced, and therefore the servo motor can be better protected.