276results about How to "Speed up condensation" patented technology

The invention provides a heat pump dish washing machine and a control method thereof. The dish washing machine comprises a process chamber provided with tableware cleaning space, a drying condenser used for conducting condensation on air of the process chamber and a first fan used for leading the air of the process chamber to the drying condenser, the dish washing machine further comprises a heat pump system, the heat pump system comprises a compressor, a condenser, a throttling device and an evaporator which are connected to form a refrigerant circulation loop, and the condenser of the heat pump can heat cleaning water of the process chamber; the dish washing machine further comprises a second fan used for leading cooling air after heat exchange of the evaporator of the heat system is conducted to the drying condenser. The dish washing machine is heated by the heat pump, when drying is conducted, heat exchange between the dish washing machine and the drying condenser through the cooled air of the evaporator is conducted, the drying process can be accelerated, and the energy is saved.

The invention comprises: a cold plate with 3D saw tooth-like fins and a surface evaporation plate with multi holes whose bottoms are connected each other with micro channels; the cold plate with 3D saw tooth-like fins is welded with the surface evaporation plate to form a sealed room filled out with working materials. The 3D saw tooth -like fins triggers the turbulent motion of gas and enhances the condensation process; the multi holes structure improves the heat conduction efficiency.

The invention discloses a high water-containing mud curing agent for mine filling and a using method thereof. The curing agent consists of a component A and a component B, wherein the component A consists of alum, sulfuric aluminate and / or ferrous aluminate and / or high-aluminum cement clinker, amorphous SiO2 superfine powder and pelletized blast furnace slag; the component B consists of solid water glass, alkali carbonate, lime and gypsum; and the components are ground into solid fine powder materials of 200 meshes with screen residue of not more than 10 percent, and the solid fine powder materials are mixed uniformly to form the component A and the component B respectively. In use, the component A and the component B are prepared into aqueous slurry respectively, the slurry B is delivered together with mud, the slurry A is separately delivered, and the slurry in double pipes is mixed and cured after the slurry is delivered to a filling field. The strength of the filled cured body in 7 days is 0.5 to 3.5MPa, and the strength of the filled cured body in 28 days is 1 to 5MPa. The high water-containing mud is cured by using a composite gel system, so that the water content and the condensation rate of the mud are improved, the early strength of the mud is increased, and the later strength of the mud is continually increased.

The invention relates to a cascade and deep coal-fired flue gas SO<3> removal system and method. The system includes an SCR denitration device, an alkaline absorber spraying device, an air preheater, a temperature regulating and effect improving device, an electrostatic precipitator, a desulfurization tower and a wet electrostatic precipitator, wherein the temperature regulating and effect improving device comprises a cooling section and a heating section, the SCR denitration device, the air preheater, the cooling section of the temperature regulating and effect improving device, the electrostatic precipitator, the desulfurization tower and the wet electrostatic precipitator are sequentially arranged in the flue gas removal direction. The alkaline absorber spraying device is arranged in front of the SCR denitration device, behind the SCR denitration device, in front of the air preheater, behind the air preheater or in front of the cooling section of the temperature regulating and effect improving device. The cascade and deep coal-fired flue gas SO<3> removal system conducts cascade and deep removal on flue gas SO<3> through various pollutant control devices and achieves that the SO<3>emission concentration is less than 5 mg / Nm<3>.

The invention discloses a light-gathering seawater desalination device and a seawater desalination method. The seawater desalination device includes: a semielliptical solar heat collection cover, wherein a freshwater collection tank is arranged at the bottom of the inner wall of the solar heat collection cover, the freshwater collection tank defines an evaporation plane at the bottom of the solarheat collection cover, a freshwater outlet is arranged in the freshwater collection tank, the freshwater outlet is connected with a freshwater storage unit, the b-axis length of the solar heat collection cover is longer than the a-axis length of the solar heat collection cover, and the b-axis is perpendicular to the evaporation plane; a light gathering member, wherein the light gathering member isconfigured to gather sunlight radiated to the solar heat collection cover; and a cooling unit, wherein the cooling unit is arranged outside the solar heat collection cover, and is configured to coolthe outer surface of the solar heat collection cover. The light-gathering seawater desalination device can be directly used on the water surface (such as the sea surface), and has the advantages of simple structure, low cost, convenience in use, high solar energy utilization rate, high seawater desalination efficiency and high water purification efficiency.

The invention relates to a method for drying a yellow peach through pulse pneumatic-puffing and a product thereof, belonging to the technical field of fruit and vegetable drying process. The method comprises the following specific steps: performing pretreatment, namely choosing the meat type yellow peach, peeling, denucleating, slicing, dipping and freezing, wherein two time-consuming procedures of pre-drying and moisture equalizing are omitted, and directly carrying out a cycle pulse pneumatic-puffing and drying technology on the high moisture yellow peach chips or dices. The processing requirement of using one procedure to substitute various procedures is finished, the traditional pre-drying, moisture equalizing and pneumatic-puffing machining technique is abandoned, the pneumatic-puffing and drying processing technique is simplified, the pneumatic-puffing device function is expanded, and the yellow peach puffing crisp chip or dice product with crisp mouth feel and good color, aroma and taste is processed. By adopting the method provided by the invention, the pneumatic-puffing processing efficiency of the yellow peach crisp chips or dices is greatly improved, the energy consumption is saved, the production cost is reduced and the technical and economic performance is improved.

The invention belongs to the technical field of water collecting and energy conservation, and particularly relates to a water collecting device with the gradient hydrophilic and hydrophobic performance and an application thereof. The water collecting device with the gradient hydrophilic and hydrophobic performance comprises gradient pore hydrophilic porous foam, hydrophobic porous foam, a collecting tank, a protective cover and a porous foam fixing structure; wherein the protective cover is filled with the gradient pore hydrophilic porous foam and the hydrophobic porous foam; two spaces are arranged on the two sides of the hydrophobic porous foam correspondingly; the front space is an interval gap between the hydrophobic porous foam and the gradient pore hydrophilic porous foam, and the width of the front space is in a millimeter scale; the rear space is provided with the collecting tank; and the hydrophobic porous foam is suspended through the porous foam fixing structure, so that the interval gap on the front side communicates with the collecting tank.

The invention discloses a solar photothermal conversion water purification device and a water purification method. The solar photothermal conversion water purification device provided by the invention comprises a semi-ellipsoid solar heat collecting cover, an isolation heating layer and a cooling unit, wherein a fresh water collecting tank is arranged at the bottom of the inner wall of the solar collecting cover; an evaporation plane is defined by the fresh water collecting tank at the bottom of the solar heat collecting cover; a fresh water outlet is formed in the fresh water collecting tank and is connected with a fresh water storage unit; the length of an axis b of the solar heat collecting cover is greater than that of an axis a; the axis b is vertical to the evaporation plane; the isolation heating layer is positioned inside the solar heat collecting cover; the isolation heating layer can be in contact with the water surface; sea water is absorbed inside the isolation heating layer through pore passages; a substrate has photothermal conversion materials; the cooling unit can cool the outer surface of the solar heat collecting cover. The solar photothermal conversion water purification device can be directly placed on the water surface to be used; the structure is simple; the cost is low; the solar utilization rate is high; the water purification efficiency is high.

The invention discloses a shoe material thermal-laminating process. The shoe material thermal-laminating process comprises the following steps that 1, shoe materials to be processed are prepared, wherein the shoe materials include a first shoe material and a second shoe material which are to be laminated, a zone to be laminated of the first shoe material and / or a zone to be laminated of the second shoe material undergoes adhesive coating treatment, an adhesive layer is formed through the adhesive coating treatment, and the zones to be laminated and / or an adhesive contain moisture; 2, the zone to be laminated of the first shoe material and / or the zone to be laminated of the second shoe material obtained in the step 1 are correspondingly adhered, and adhesion is kept to obtain a shoe material adhered part; 3, the shoe material adhered part in the step 2 is subjected to microwave heating heat treatment through a microwave heating device to make the first shoe material and the second shoe material bonded and fixed together, and then the first shoe material and the second shoe material which are bonded and fixed together are subjected to low-temperature cold-shaping treatment. The shoe material thermal-laminating process has the advantages of being short in consumed time and simple and reducing the energy consumption.

The invention discloses an alkali-free high-strength concrete flash setting admixture.The flash setting admixture comprises, by weight, 11%-20% of Portland cement, 13%-19% of aluminum oxygen chamotte, 5%-11% of naphthalenesulfonic acid-formaldehyde condensate, 6%-12% of bentonite, 15%-21% of coal ash, 5%-11% of gypsum, 1%-7% of zinc sulfate, 1%-2% of sodium aluminate, 2%-8% of sodium carbonate, 4%-10% of hydroxypropyl methyl cellulose and 6%-12% of silica fume.The alkali-free high-strength concrete flash setting admixture has the advantages that the flash setting admixture is short in setting time and capable of promoting concrete to set primarily within 3 minutes and set finally within 8 minutes and can have strength after 0.8 hour, later strength develops slowly, and both early strength and later strength are high; the concrete is excellent in homogeneity, high in anti-penetrability performance, little in dust and small in rebound quantity; the alkali-free chloride-free concrete has no corrosive effect on rebars and is highly adaptable to cement.

The invention relates to an external condensation-style inclined core-type solar seawater distillation and desalination device. The external condensation-style inclined core-type solar seawater distillation and desalination device comprises a solar seawater desalination device, a phase change heat storage system and a heat energy recovery system, wherein the solar seawater desalination device comprises a cavity; a partition plate is mounted in the cavity to divide the interior of the cavity into a condensing chamber and a evaporating chamber; the evaporating chamber is used for evaporating injected raw seawater; a low-temperature seawater condenser coil pipe is mounted in the condensing chamber for condensing vapour; the evaporated high-temperature concentrated seawater enters a heat energy recovery box body through a pipeline and heats the raw seawater in the box body, simultaneously, the heated raw seawater in the condenser coil pipe is injected into the heat energy recovery box body, and the raw seawater in the heat energy recovery box body enters the seawater desalination device through the phase change heat storage system. According to the external condensation-style inclined core-type solar seawater distillation and desalination device, the temperature of the raw seawater is raised by utilizing a plurality of means, the sweater evaporating time is prolonged, and the condensing process of the vapour is accelerated, so that the seawater desalination efficiency is greatly improved.

The invention discloses a hot metal high-temperature heat pipe. The hot metal high-temperature heat pipe comprises a liquid filling pipe, a top end cover, a heat pipe shell, a bottom end cover, a gap,a condensation section liquid absorbing core, a heat insulation section liquid absorbing core, an evaporation section liquid absorbing core, a steam cavity, a liquid absorbing core plug and a gas storage bag. The closed liquid filling pipe, the top end cover, the heat pipe shell and the bottom end cover jointly form a closed space of the heat pipe. The liquid filling pipe is connected with a hotmetal filling loop through a connecting element, and filling of a working medium is achieved. The backflow resistance of the liquid working medium can be reduced through the gap. The evaporation section liquid absorbing core, the heat insulation section liquid absorbing core and the condensation section liquid absorbing core jointly provide power for backflow of the liquid working medium. The wavestructure of the heat insulation section liquid absorbing core can reduce liquid drop entrainment, and the condensation section liquid absorbing core adopts a fin structure to accelerate steam condensation. The liquid absorbing core plug can store the working medium and adjust the mass of the working medium participating in circulation. The gas storage bag can limit non-condensable gas, and the influence of the non-condensable gas on heat transfer is reduced.

The invention provides a nano fiber composite membrane. The nano fiber composite membrane comprises a mussel bionic polymer serving as a surface hydrophilic layer and a super-hydrophobic layer locatedin the polymer and in the form of polymer fiber. The composite membrane is obtained by conducting super-hydrophobic modifying treatment on the static spinning main body and conducting hydrophilic modifying treatment on the upper surface and the lower surface. The static spinning main body is obtained by adopting a hydrophobic polymer. Super-hydrophobic modifying treatment comprises the steps thatthe membrane prepared through static spinning is dipped into a solution containing a super-hydrophobic modifier. Hydrophilic modifying treatment comprises the steps that the upper surface and the lower surface of the static spinning main body subjected to super-hydrophobic modifying treatment is coated with the mussel bionic polymer hydrophilic modifier. The preparation method solves the problemof wetting and pollution of the membrane in the prior art of membrane distillation, the process is simple, the effect is outstanding, and the membrane can be widely applied to separation and concentration process in the field ofincluding biology, medical treatment, electronics and food.

The invention relates to the field of building materials and in particular provides low-resilience, early-strength and high-strength wet-spraying concrete and application thereof. The low-resilience,early-strength and high-strength wet-spraying concrete is prepared from the following raw materials in parts by weight: 380 to 500 parts of cement, 800 to 1000 parts of sand, 650 to 800 parts of crushed stone, 10 to 30 parts of a setting accelerator, 160 to 200 parts of water, 20 to 30 parts of a high-strength ultra-micro additive and 40 to 50 parts of fly ash. According to the low-resilience, early-strength and high-strength wet-spraying concrete prepared by the invention, the binding force is greatly improved and the resilience rate of the concrete is reduced; the concrete can be normally sprayed in a water-rich region and a result reaches the advanced level in China; the low-resilience, early-strength and high-strength wet-spraying concrete can be directly applied to primary supportingconstruction of tunnels and a novel technical way is explored for the primary supporting construction of the tunnels.

The invention belongs to the technical field of power batteries, and provides a two-phase immersed cooling system with multiple modules sharing one condensation cavity for battery cooling. The heat generated by the battery in the working process is taken away by vaporization of the fluorinated liquid on the surface of the working medium, the vaporized fluorinated liquid is condensed in the heat exchanger, and the heat released by condensation is directly absorbed by the cooling working medium in the cooling pipeline, so the highest temperature of the battery module and the temperature difference between different battery monomers are effectively controlled. Compared with the conventional air cooling, liquid cooling, refrigerant direct cooling and other cooling modes, the method has the following advantages that the used fluorination liquid has good dielectric properties, and battery short circuit cannot be caused; the fluorination liquid is in direct contact with the surface of the battery, so the heating capacity is high and no contact thermal resistance exists; the used fluorination liquid has flame retardancy, and can effectively inhibit the ignition and explosion of the batteryunder extreme conditions; the phase change of the fluorinated liquid is fully utilized, the heat dissipation efficiency is high, and the energy consumption is low.

The invention relates to the technical field of mine filling, and particularly discloses a gangue paste cementing material and a preparation method thereof, and a gangue paste filling material and a preparation method thereof. The gangue paste cementing material is prepared from the following components in parts by mass: 20 to 30 parts of Portland cement clinker, 2 to 4 parts of sulphoaluminate cement clinker, 5 to 10 parts of modified gypsum, 60 to 70 parts of mineral powder, 5 to 10 parts of limestone powder, 0.2 to 0.3 part of sodium silicate and 2 to 4 parts of additive. The gangue paste filling material is prepared from the following components in percentage by mass: 2.5 to 3 percent of gangue paste cementing material, 16 to 18.5 percent of gangue, 5 to 6 percent of fly ash and the balance of water. The gangue paste cementing material can replace cement to serve as a cementing material to play a role in a gangue paste filling material, the manufacturing cost of the gangue paste filling material is reduced, and the coagulation strength and the coagulation speed of the gangue paste filling material can be greatly improved.

The present invention discloses a full automatic control water jet condenser with characteristics of a concentric diameter changing throat part, temperature control, constant water pressure and adjustable nozzles, wherein the full automatic control water jet condenser is used in sugar refineries. The full automatic control water jet condenser is characterized in that part of spray nozzles and jet nozzles arranged in a water chamber are nozzles provided with a pneumatic opening and closing control device, a throat part of the condenser is provided with a concentric diameter changing throat part device, and the pneumatic opening and closing controlled nozzles and the concentric diameter changing throat part device can jointly act and perform adjustment control according to a water temperature and a water supply amount of water entering the condenser water chamber. According to the present invention, a pressure transmitter for detecting a vacuum degree of a container (a sugar boiling tank or an evaporation tank), a temperature transmitter for detecting a temperature of a material (a syrup and a sugar paste) inside the container, and a pressure transmitter for detecting water pressure inside the water chamber jointly adjust and control an opening degree of an automatic control water inlet valve, such that the condenser can achieve a high vacuum degree under a normal production condition, and can achieve a preset vacuum degree and a preset material temperature during production condition changing, wherein the existing wet type water jet condensers used in sugar refineries at home and abroad do not have the advantages of the condenser of the present invention.

The invention discloses an intelligent low energy consumption sludge low-temperature drying system. The system comprises a sludge feed device (1), a drying tank (2), a dehumidifying and heating device(3), a dust removing device (4) and a gas pipeline, wherein the sludge feed device (1) is arranged on the drying tank (2) and is connected with the drying tank (2); the drying tank (2) is connected with the dehumidifying and heating device (3) through the gas pipeline; the dust removing device (4) is arranged between the drying tank (2) and the dehumidifying and heating device (3); a sludge outlet (2-5) is formed in the bottom of the drying tank (2); an automatic sampling device (7) is used for automatically sampling sludge in the drying tank (2); a water content online detection device (9) is used for detecting the water content of sampled sludge, and the sludge conveying speed of the drying tank (2) is adjusted according to the detection result of the water content. The intelligent lowenergy consumption sludge low-temperature drying system has the advantages of high energy utilization, and real-time detection on sludge water content variation through the water content online detection device.

The invention discloses a venting plug of an automobile transmission, and aims to solve the problem of leakage of the venting plug of the conventional automobile transmission under the actions of high temperature and centrifugal force. The venting plug comprises a plug cover and a plug body provided with a venting cavity, wherein the plug cover is arranged on the plug body in a sleeving way; an annular air outlet is formed between the inner wall of the plug cover and the outer wall of the plug body; a ventilation pipe is arranged in the venting cavity; the ventilation pipe comprises an outer shell and an inner shell provided with a cavity; the outer shell is arranged on the periphery of the inner shell in a sleeving way, and is connected with the inner shell through an end cover, thereby forming a sealed cooling cavity; cooling liquid is injected into the cooling cavity; the outer wall of the inner shell is provided with a helical guide plate. By adopting the venting plug, leakage of lubricating oil can be prevented.

The invention discloses a method for preparing a high-concentration acidic soap lotion. The method comprises the following steps of: (1) evaporating by heating, namely heating an acidic soap lotion to 72 to 100 DEG C under stirring for evaporation; (2) performing vacuum extraction, namely performing vacuum extraction on vapor obtained in the step (1); (3) condensing, namely condensing the vapor obtained in the step (2) through vacuum extraction; and (4) cooling, namely cooling materials after evaporation by heating to obtain the high-concentration acidic soap lotion. The high-concentration acidic soap lotion is prepared by concentrating a low-concentration acidic soap lotion which is synthesized by copolymerizing acrylic acid and maleic anhydride serving as main raw materials, so that storage and transportation costs of the acidic soap lotion are reduced.

The invention discloses a high-efficiency spray condensation heat dissipation absorption tower, which comprises a tower tank, a drainage pipe, a water collection tank, a water pump, a water pump, a chemical raw material steam outlet pipe, a heat absorption condensation pipe, a fan, a spray discharge, a flow meter, a gas booster Pressure pump and chemical raw material steam inlet pipe, the bottom of the tower tank is provided with support legs, and the tower tank is equipped with a heat absorption condensing pipe, one end of the heat absorption condensing pipe is connected with the chemical raw material steam inlet pipe, and the other end of the heat absorption condensing pipe is It is connected with the chemical raw material steam outlet pipe, the chemical raw material steam inlet pipe is equipped with a gas booster pump, the top of the tower tank is equipped with a spray discharge, the inner wall of the tower tank is equipped with a fan, and the bottom of the tower tank is equipped with a drain pipe, the drain pipe and the water collection tank The outlet end of the water suction pipe is connected with the spray row, the inlet end of the water suction pipe is arranged in the water collection tank, and the water pump is arranged on the water suction pipe. The invention accelerates heat loss and condensation, improves work efficiency, avoids waste, reduces cost, has simple structure, is convenient to use, and is beneficial to popularization.

The invention discloses a marine exhaust gas washing device, which comprises a washing tower body, wherein a marine exhaust gas inlet, an evaporative cooling area, a first washing area, a second washing area and a marine exhaust gas outlet; a first ventilation liquid barrier is arranged between the evaporative cooling area and the first washing area; a second ventilation liquid barrier is arrangedbetween the first washing area and the second washing area; an independent cooling liquid circulating system is arranged in the evaporative cooling area; the first washing area is connected with a first alkaline liquid circulating system; the first washing area performs primary washing on the marine exhaust gas by use of the alkaline liquid supplied by the first alkaline liquid circulating system; the second washing area is connected with a second alkaline liquid circulating system; the second washing area performs secondary washing on the marine exhaust gas by use of the alkaline liquid supplied by the second alkaline liquid circulating system; concentration of the alkaline liquid supplied by the first alkaline liquid circulating system is different from that of the alkaline liquid supplied by the second alkaline liquid circulating system. The marine exhaust gas washing device disclosed by the invention has the advantages that gradient washing can be performed on the marine exhaust gas, and the effects of sulfur removal and particle removal are good.

The invention discloses a method for preparing the nano aluminum nitride material through the electrical explosion process and belongs to the field of process technology. The method comprises the steps of assembling and debugging an electrical explosion system, fixing an aluminum wire between electrodes, adding the liquid nitrogen in an electrical explosion tank, sealing the electrical explosion tank, charging a high-voltage capacitor bank in the electrical explosion system, switching on the electrical explosion system, opening the electrical explosion tank after the discharge process after the discharging process, collecting powders inside the electrical explosion tank, adding powders (a) in the excess ethanol solution of saturated hydrogen chloride, reacting the powders with the solution for 12 to 15 hours at 40 to 50 DEG C, filtering, washing to a neutral stance, and drying in vacuum for 24 to 48 hours at -50 to -55 DEG C to obtain the nano aluminum nitride material. The above method has no requirement on the sealing property and is good in safety and higher in cooling rate. The obtained nano aluminum nitride material is small and uniform in particle size.

The present invention discloses a solar evaporation type separation method and its equipment. Said method utilizes solar energy as main heating energy source to raise surface local temperature of separated mixture and raise the evaporation and condensation speed of mixture so as to implement directional flow of substance and attain the goal of substance separation. Said equipment structure is characterized by that its shell body is a double-layer container, upper opening is oblique surface structure, heat-insulating layer made of heat-insulating material is added between inner layer and outer layer, its bottom is fresh water tank whose bottom portion is equipped with condenser. Said equipment is specially applicable to desalination of sea water.

The invention relates to an exhaust structure of steaming and baking cooking equipment and a steaming and baking all-in-one machine. An exhaust pipe comprises a first pipe body and a second pipe body,the first end of the first pipe body is communicated with an exhaust port of an inner container, the second end of the second pipe body is communicated with an air inlet of an exhaust channel, and anexhaust valve assembly comprises a spherical valve element. An air flow channel with an air inlet and an air outlet is formed in the valve element, the air inlet and the air outlet of the air flow channel are both exposed out of the surface of the valve element and located on the two sides of the first central axis, and the air inlet and the air outlet can be in fluid communication with the second end of the first pipe body and the first end of the second pipe body respectively. during the rotating process of the valve element, the actual ventilation area of the second end of the first pipe body and the air inlet of the airflow channel and the actual ventilation area of the first end of the second pipe body and the air outlet of the airflow channel can change synchronously. The steam exhaust speed of steam can be changed, different steam exhaust speeds can be set according to different cooking modes, and then the cooking effect is improved.

The invention belongs to the field of chimneys, and particularly relates to an energy-saving environment-friendly self-cleaning chimney. The energy-saving environment-friendly self-cleaning chimney comprises a chimney body, the upper end of the chimney body is fixedly connected with a rain shielding plate through a plurality of connecting rods; a water storage cavity is formed in the side wall ofthe chimney body; the water storage cavity communicates with the outside through a water inlet pipe and a water outlet pipe; an annular collecting groove is embedded in the inner side wall of the lower part of the chimney body; the annular collecting groove is arranged in a funnel shape with a small top and a large bottom; the lower end of the rain shielding plate is rotatably connected with a rotating shaft, the rotating shaft is coaxially and fixedly connected with a rotating wheel, the side wall of the rotating wheel is provided with a plurality of diversion grooves which are obliquely formed, a filter plate is fixedly connected inside the chimney body, the filter plate sleeves the rotating shaft, a scraping strip which is spirally arranged is fixedly connected at the lower end of the rotating shaft, and the scraping strip is in abutting contact with the inner side wall of the chimney body. According to the chimney, external wind force and airflow during oil smoke emission are usedas power to clean the inner side wall of the chimney, so that self-cleaning of the chimney can be realized, and smooth emission can be maintained.

The invention relates to a cold charge distribution method for improving the condensation speed and strength of a continuous casting cast-on head blank. The method comprises assembling, gap filling and material distribution. Before pouring starts during continuous casting, a dummy bar head is conveyed into a crystallizer in a penetrating manner, and a flow blockage material is used for sealing a gap between the dummy bar head and a crystallizer wide face copper plate; after filling is finished, spiral cold charges are flatly laid to the dummy bar head, and three layers of spiral cold charges are evenly arranged on two narrow faces of the crystallizer in the width direction; and two layers of spiral cold charges are evenly arranged on the inner arc of the dummy bar head in the length direction, and two layers of spiral cold charges are evenly arranged at the outer arc dovetail groove position of the dummy bar head in the length direction. According to the cold charge distribution method, impact force on the dummy bar head flow blockage material from molten steel can be greatly reduced, the condensation speed of molten steel at the dummy bar head is increased, and the bonding strength and the tight degree between the blank head and a dummy bar head dovetail groove can be effectively improved; and it is ensured that the condensed molten steel reaches the high strength within shorttime before the emerging time, and a cast blank can be safely output of the crystallizer and a fan-shaped section.

The invention discloses a device for purifying air. The device comprises an air exchange device and a ventilation pipeline. Openings are formed in two ends of the ventilation pipeline, the air exchange device is arranged at the opening in one of the ends of the ventilation pipeline, the opening in the other end of the ventilation pipeline is open, the openings in the two ends of the ventilation pipeline keep in the air, and the middle of the ventilation pipeline is arranged in media at the temperatures different from the temperature of the air. The device for purifying the air has the advantages that the middle of the ventilation pipeline with the openings in the two ends is arranged in the media at the temperatures different from the temperature of the air, the air exchange device is arranged at the opening in the corresponding end of the ventilation pipeline, accordingly, the air around the openings in the two ends of the ventilation pipeline can flow through the media at the temperatures different from the temperature of the air, and moisture in the air can be condensed; impurities in the air can be adsorbed and dissolved in condensed water, and accordingly the air can be easily and conveniently purified.

The invention relates to the technical field of water collecting devices, in particular to a device for making water with air. The device for making water with air comprises an evaporator, a compressor, a condenser, an expansion valve and a water tank. The evaporator is arranged in an evaporator chamber. An air inlet is formed in the upper portion of the evaporator chamber. A liquid discharge port is formed in the bottom of the evaporator chamber. An air exhaust port is formed in the side wall of the evaporator chamber. A pressure adjusting valve is arranged at the position of the air exhaust port. An air blowing device is arranged at the position of the air inlet. The liquid discharging port is communicated with the water tank and is located below the water level of the water tank. According to the device for making water with air, because the evaporator is arranged in the evaporator chamber, the air blowing device is arranged at the position of the air inlet of the evaporator chamber, the pressure adjusting valve is arranged at the position of the air exhaust port, and liquid sealing is carried out on the liquid discharge port; in this way, a high-pressure environment can be kept in the evaporator chamber, and the speed of condensation of moisture in air on the evaporator is increased.

A counter flow type heat exchanger provided with flat tubes comprises the flat tubes and fins, wherein sealing strips are mounted on two sides of each fin; the flat tubes and the fins are arranged alternatively in parallel; and the flowing directions of the flat tubes are parallel to the flowing directions of the fins outside the flat tubes, so that counter flow heating exchange is formed. The counter flow type heat exchanger provided with the flat tubes is compact in structure, small in occupied space, high in pressure resistance grade and wide in application range and can be used for an evaporator and a condenser taking carbon dioxide as a refrigerant, particularly large-scale heat exchange capability can be formed, the counter flow type heat exchanger is applicable to an evaporator and a condenser of a central air conditioner, the efficient evaporator and condenser allowing the refrigerant to pass through micro channels and water to flow from the outside of the micro channels are obtained, and energy is saved.