12219 results about "Hot blast" patented technology

The invention provides a disinfection equipment production and processing quality control method and system based on intelligent analysis. Precise control of the drying process is achieved through three-stage collaborative optimization, firstly, hot air distribution parameters and historical energy consumption data of the drying process are integrated, a hot air uniformity and energy efficiency collaborative optimization model is constructed, and a dynamic target parameter system is established. Secondly, temperature field distribution data are collected in real time in the equipment operation process, multi-dimensional dynamic correlation analysis is conducted on the temperature field distribution data and energy consumption data of the heat supply device, heat field abnormal fluctuation and energy consumption correlation characteristics are recognized through a machine learning algorithm, and finally a heating power dynamic adjusting instruction is generated based on an analysis result; and by adopting the synergistic effect of a differential control algorithm and a frequency conversion regulation technology, process requirements are accurately converted into power supply frequency regulation and control signals, and millisecond-level dynamic response and self-adaptive regulation of the heating power are realized. According to the technical scheme provided by the invention, the production and processing quality control efficiency and accuracy of the disinfection equipment can be improved.

The invention provides an underground heat supply system based on an air energy heat pump as a heat source and a remote monitoring method, and the system comprises a heat source dynamic tuning subsystem which carries out the dynamic parameter optimization processing of environment temperature and energy storage state data, and obtains an air energy heat pump operation instruction; first characteristic adjustment of air energy heat pump output is formed through an air energy heat pump operation instruction, and matching of the temperature of an energy storage water tank and an environment heat source is achieved. The underground hot air accurate adjusting subsystem obtains underground real-time temperature data, the underground real-time temperature data is subjected to spatial thermal field calculation processing to obtain air volume demand parameters, and dynamic balance between the air supply intensity and the underground thermal environment is formed; and the multi-stage cooperative control center subsystem performs three-stage logic verification processing on the signals of the air energy heat pump operation instruction and the fan frequency instruction to obtain an equipment regulation and control instruction set. The underground intelligent heat supply system of the air energy heat pump, which has the environment self-adaption capability, the dynamic balance capability of a thermal field and the remote monitoring characteristic, is constructed.

The invention relates to the field of food drying, in particular to a multi-layer circulating food drying machine which adopts a stage treatment technology combining condensation dehumidification and adsorption dehumidification and utilizes a preheating mechanism to recover condensation waste heat. The drying device structurally comprises a plurality of layers of independently sealed drying areas, each area is provided with a bottom air inlet groove, a top exhaust groove and a bottom exhaust groove, and a hot air path is optimized through a flow guide plate; the condensation mechanism adopts a spiral runway-shaped condensation pipe and a cooling fin to realize primary dehumidification, and the adsorption mechanism alternately works through a rotatable fan-shaped adsorption area to maintain the adsorption efficiency; the preheating mechanism absorbs condensation heat dissipation to preheat external air and then supplements the external air to the circulating system. Through hot air cyclic utilization, multi-stage dehumidification and waste heat recovery, the drying efficiency is remarkably improved, the energy consumption is reduced, meanwhile, the adaptability to food with different water contents is enhanced, and uniform and rapid drying is achieved.

The invention discloses a spray drying device for boron carbide production, the spray drying device comprises a spray drying tower, a hot blast stove, a cyclone separator and a system controller, an atomizer and an online detection module are arranged in the spray drying tower, and the online detection module is used for monitoring temperature parameters in the spray drying process; comprising a first temperature sensor, a second temperature sensor and a temperature signal processing unit, the temperature signal processing unit adopts a multi-stage filtering and error compensation technology, noise and interference are effectively suppressed, and the accuracy of detection data is ensured. The air inlet temperature and the air outlet temperature are monitored in real time through the online detection module, the fuzzy-PID control algorithm is combined, the temperature control precision and the response speed are remarkably improved, and temperature fluctuation is reduced. The device dynamically adjusts the heating power of the hot blast stove according to real-time working conditions, the energy utilization efficiency is optimized, and the energy consumption is reduced.

A drying device of a washing machine and a drying control method thereof, wherein the washing machine is provided with an exhaust assembly installed on an inner door body, a hot air assembly installed on a side wall of a cavity, a heating element and a blowing fan installed in a hot air passage of the hot air assembly, an exhaust fan installed in an exhaust passage of the exhaust assembly, a humidity sensor used to detect the humidity and temperature of the air inside the cavity, a controller capable of receiving an output signal of the humidity sensor, and correspondingly controlling the blowing fan, the exhaust fan and the heating element according to the output signal. After the washing is finished, the washing machine has a lot of internal steam and extremely high humidity. The control method first turns on the blowing fan and the exhaust fan to quickly discharge the moisture, then converts the relative humidity detected by the humidity sensor into absolute humidity, and then controls the fan and the heating element to work accordingly according to the absolute humidity drop rate. The entire drying process is relatively efficient, energy-saving and intelligent.

The invention relates to the technical field of transformers, in particular to an anti-interference phase-shifting rectification dry-type high-capacity transformer which comprises a cooling channel, an air inlet system, an air outlet system and a compression system. The cooling channel is arranged between the high-voltage coil and the low-voltage coil; the air inlet system is connected with the mounting frame, and when the air inlet system works, low-temperature gas outside the anti-interference shell is sucked in, forms rotational flow and is fed into the cooling channel; the air outlet system is connected with the top of the anti-interference shell, and the compression system is connected with the air outlet system; low-temperature air is extracted from the outside and fed into the space between the high-voltage coil and the low-voltage coil in a rotational flow mode, dead-corner-free heat dissipation is guaranteed, the heat dissipation efficiency can be improved by changing the included angle between the low-temperature air and the horizontal plane during rotational flow along with heat change, heat is recycled for refrigeration, and the heat dissipation efficiency is further improved; the problem that due to heat accumulation in the anti-interference shell, air blown into the position between the high-voltage coil and the low-voltage coil by the draught fan is hot air and is not evenly distributed is solved.

The invention relates to the technical field of drying, in particular to environment-friendly high-uniformity dipping and drying equipment which comprises a drying equipment mounting main body, closed side plates are fixedly mounted on the outer surfaces of the two sides of the drying equipment mounting main body correspondingly, and a drying box is arranged on one side of the drying equipment mounting main body; the drying device has the beneficial effects that the interior of the drying box is distributed and arranged through the drying interval fan cover, and the preheating hollow guide roller is improved, so that cooling air enters the U-shaped air duct area through the hot air inlet after being heated by the heating pipe in a centralized manner; the air flow enters a V-shaped drying air pipe through a lower air inlet groove and an upper air inlet groove to assist the drying air pipe in uniformly discharging the air to uniformly dry the base material, and then is upwards sucked out under the action of a leading-out fan, so that the air flow carries moisture evaporated by the base material to generate humid and hot air, and the humid and hot air is sucked out by the leading-out fan and is conveyed into a central fixed pipe through a humid and hot air discharging pipe; and the hot air is dispersed from the hot air radiating grooves and enters the inner side of the preheating hollow guide roller to perform non-contact heat exchange with a base material.

A clothes drying device, including an air channel, an air path switching assembly, multiple clothes drying apparatuses, and multiple heating apparatuses. The air path switching assembly includes a first multi-position switching component and a second multi-position switching component. The first multi-position switching component and the second multi-position switching component are respectively provided between a hot air input section and intermediate heat source sections and between a hot air output section and the intermediate heat source sections; the first multi-position switching component and the second multi-position switching component have the same number of switching positions and are configured to work in conjunction to each other so that at least one clothes drying apparatus is selectively communicated with the corresponding hot air input section, the hot air output section, and the intermediate heat source sections so as to form a circulation loop.

The invention discloses an automatic straw bale feeding device which can be used for smoke dust removal and straw drying at the same time. The device enables straw bales (8) to be continuously dried in a straw bale dust removal and drying feeding bin (4) using hot air or waste heat smoke from a combustion system (1) or other sources, and the waste heat smoke is simultaneously dust removed and purified by the straw bales (8). Straw bales are put into and transported from a straw bale transport device A (13) at the front to a straw bale transport device B (14) at the rear, and dried and smoke dust removed at an air blowing opening (28). The dried straw bales enter a straw bale push bin (2) through a straw bale locking bin (3) and are finally sent to a combustion system (1). New straw bales are reloaded through a straw bale dust removal and drying feeding bin (4) which is provided with two pivot doors (9, 11), connected to the straw bale locking bin (3) and includes two straw bale transport devices.

The invention relates to the technical field of pulverized coal separation, and discloses an efficient pulverized coal separation device of a coal mill, which comprises a base for supporting the whole device, a powder blowing assembly, a secondary grinding assembly and a flow guide assembly for separating pulverized coal, a mounting frame used for mounting a coal grinding roller is mounted in the shell, a primary grinding groove is mounted at the top end of the base and used for being matched with the coal grinding roller to grind coal, a feeding pipe is fixedly connected to the side wall of the shell, and the bottom end of the feeding pipe is located above the primary grinding groove. Hot air of the air heater is specially conveyed to be matched with the rolling pieces, pulverized coal is blown away in multiple directions, the powder blowing efficiency is improved, automatic secondary grinding of coarse pulverized coal is achieved through driving of the first-stage grinding groove, the percent of pass and the utilization rate are improved, the adjustable flow deflectors can change centrifugal force according to needs, separation is accurately controlled, adaptability is enhanced, the system efficiency is optimized, and the cost is reduced.

The invention relates to the technical field of wafer test equipment, in particular to a heating aging test tool which comprises a storage rack and further comprises a wafer clamp placed on the storage rack. The detection assembly comprises a plurality of elastic probes located on one side of the storage rack and a heating disc; and the hot air guide assembly comprises a ventilation male head arranged on one side of the heating disc, an air guide pipe is arranged on the side, away from the ventilation male head, of the heat conduction cover, the air amount in the cavity is gradually decreased from near to far away from the air guide pipe, and the air flow speed is gradually decreased. A hot air flow guide assembly is arranged on a conveying frame, heat of a heating disc is guided to the position above a wafer through airflow through a heat conduction cover, the space above the wafer is divided into a plurality of cavities, the space size and the space shape of each cavity are set, the air flow speed and the contained hot air amount of each space are adjusted, and therefore the heat conduction efficiency of the wafer is improved. The influence of heat loss in the air flow process is reduced, so that the heating effects of all parts of the wafer are similar, and the detection effect is improved.

The invention belongs to the technical field of material forming, and particularly provides a spiral winding forming machine which comprises a rack, a pipe heating assembly, a rotating assembly and a winding assembly, a feeding channel is formed in the rack, a hot air inlet is formed in the top of the feeding channel, and a hot air outlet is formed in the bottom of the feeding channel. The rotating frame drives the winding assembly to rotate, so that the strip is wound on the periphery of the pipe in a spiral mode. In order to improve the bonding strength of the winding layer, on one hand, the pipe heating assembly can form hot air passing through the feeding channel from top to bottom to preheat the core pipe; and on the other hand, the strip heating mechanism can heat the winding face of the strip. The pipe heating assembly and the strip heating mechanism jointly act, the bonding strength of the strip and the core pipe can be improved, the problem that the bonding strength of a winding layer is poor due to the fact that the temperature of the core pipe is low during initial winding of a winding machine in the prior art is solved, and the pipe production quality can be improved.

The utility model belongs to the field of crude oil heating, and particularly relates to a crude oil heating device which comprises an air energy heat pump, a water-oil heat exchanger, an air-oil heat exchanger, a solar hot air heat collector and a ground source heat exchanger. A heat exchanger tube pass is arranged in an inner cavity of the water-oil heat exchanger, the two ends of the heat exchanger tube pass are communicated with a heat exchanger oil conveying pipe, and the ground source heat exchanger is communicated with an air source evaporator copper pipe and used for evaporating refrigerants in a pipeline of the ground source heat exchanger and the air source evaporator copper pipe. The heat pump and other two heat sources can form a multi-source heating device, and the system keeps constant temperature through crude oil secondary heat exchange and phase change heat storage, is energy-saving, efficient and pollution-free, can adapt to cold weather, and is suitable for popularization.

According to the drying module, the drying water tank and the integrated cabinet, when a draught fan and a heating piece in an air inlet channel work, air in the inner space of the cabinet can be sucked through an air inlet of the air inlet channel to be heated and conveyed to a drying air channel outside the tank to heat and dry the water tank, and the water tank is heated and dried while the warm and dry environment of the water tank is guaranteed; through the hot air return channel, hot air passing through the out-of-groove drying air channel is exhausted to the inner space of the cabinet from the air outlet channel, so that air internal circulation of the inner space of the cabinet is achieved, the inner space of the cabinet is dried, the warm and dry environment of the inner space of the cabinet is kept, user experience is improved, and the user experience is improved. Moreover, air in the internal space of the cupboard is heated and dried and then is conveyed to the drying air duct outside the tank through the air inlet channel to dry the water tank, so that the drying temperature is increased, and the time required for heating and drying the water tank is shortened.

A lump ore drying and circular cooler coupled near-zero emission method comprises the steps that (1) sinter to be cooled sequentially passes through a high-temperature area, a medium-temperature area and a low-temperature area of a circular cooler to be cooled, and the cooled sinter is discharged from a discharging port of the circular cooler; (2) the lump ore to be dried enters a drying machine to be dried, and the dried lump ore is discharged from a discharging opening of the drying machine; (3) the cooling air enters a high-temperature area of the circular cooler and exchanges heat with the sintered ore in the high-temperature area, and after heat exchange, high-temperature hot air discharged from the high-temperature area is pumped back to the high-temperature area to circularly cool the sintered ore after waste heat utilization; and (4) cooling air entering the medium-low temperature area of the circular cooler continues to cool the sintered ore, mixed hot air discharged from the medium-low temperature area is conveyed to the drying machine to dry lump ore after heat exchange with the sintered ore, and dry air discharged from the drying machine is condensed and then pumped back to the medium-low temperature area to circularly cool the sintered ore. According to the system, lump ore drying and the circular cooler are coupled, and full utilization and near-zero emission of waste gas waste heat of the circular cooler are achieved.

The invention relates to the technical field of drying, and provides multi-mode uniform drying equipment which comprises a microwave drying device, an infrared drying device, a heat pump dehumidification drying device, a negative pressure device, a monitoring and control system and a multi-mode drying system. The microwave drying device comprises a cavity, a cavity telescopic unit, a waveguide and a plurality of solid-state microwave sources. The infrared drying device comprises a fixed infrared heating unit, a movable infrared heating unit, a first power interface and a second power interface; the heat pump dehumidifying and drying device comprises a hot air heating and dehumidifying unit, a waste heat recovery unit and a gas filter; the negative pressure device comprises a vacuum pump, a vacuum pipeline and a pipeline expansion joint; the multi-mode drying system comprises a material drying space motion multi-mode system and a drying mode multi-mode system; the monitoring and control system comprises a color real-time monitoring unit, a dielectric property real-time monitoring unit and a control adjusting screen; by combining microwave, infrared, hot air, negative pressure and various material space motions, uniform drying and multi-scene drying of materials are achieved, and the good drying effect is guaranteed.

The embodiment of the utility model discloses a nano water particle bath assisting device. According to one specific embodiment, the nano water particle bath assisting device comprises a bath assisting device shell, a nano water particle generating assembly, a wind power assembly and a heating assembly. The nano water particle generating assembly comprises a water tank, a centrifugal impeller, a centrifugal impeller motor, a water pump, a water pump water inlet pipe and a water pump water outlet pipe. The centrifugal impeller motor is used for driving the centrifugal impeller to rotate; the water pump is used for conveying water pumped from the water inlet to the water tank; the wind power assembly comprises a centrifugal fan, a centrifugal fan air inlet flange, a centrifugal fan air inlet rotating valve and a ventilating duct, the ventilating duct is communicated with an air outlet of the centrifugal fan and the water tank, and a hot air heating pipe is arranged in the centrifugal fan; the bath assisting device shell is provided with a water particle air outlet, and the water particle air outlet is used for being communicated with the bath assisting bin so as to provide water particles into the bath assisting bin. According to the embodiment, the probability of disease attack of the bather can be reduced, and the safety of the bather is improved.

The manufacturing method comprises the following steps that S1, raw materials, an organic auxiliary agent and pure water are subjected to slurry preparation in a ball milling tank according to the proportion, a boat support splitting part blank is obtained through a slip casting technology, and a boat support splitting part blank is obtained; performing natural drying and hot air drying on the green body to discharge moisture, and then fettling and carving the green body into a boat support splitting part semi-finished product meeting the size requirement; s2, putting the semi-finished product in S1 into an induction furnace, purifying and sintering at high temperature of 2000-2300 DEG C under the protection of inert gas, and obtaining a silicon carbide boat support splitting part biscuit which has the open pore porosity of 8-10% and the strength of more than 70 Mpa and contains a small amount of free carbon after high-temperature purifying and sintering; and S3, splicing the silicon carbide boat support splitting part biscuits, feeding the spliced whole boat support into a vacuum furnace, carrying out high-temperature siliconizing sintering treatment at 1650-1700 DEG C, and carrying out grinding, sand blasting, fine cleaning, impurity removal, ultrasonic cleaning and drying process treatment after discharging to obtain the low-iron-content boat support.

The utility model relates to the technical field of drip irrigation tape production, in particular to plastic particle drying equipment which is characterized in that the lower end of a storage box is connected with a star-shaped discharge valve, the input end of a material uniformizing groove is positioned right below a discharge pipe, the output end of the material uniformizing groove is positioned right above the input end of a conveying belt, a hot air discharge pipe is fixedly connected above the conveying belt, and the hot air discharge pipe is fixedly connected with the conveying belt. The output end of the hot air generator is connected with the hot air discharging pipe through an air inlet pipe, and an air collecting hood is fixedly connected to the upper portion in the drying box. The star-shaped discharging valve is arranged at the lower end of the material storage box, so that the discharging amount in unit time can be controlled, materials can uniformly fall on the conveying belt by arranging the material uniformizing groove and the vibration motor, and the problem that a large number of plastic particles are accumulated is solved; the gas collecting hood is arranged in the drying box and communicated with the treatment box, the odor removing layer is arranged in the treatment box, peculiar smells generated in the plastic particle drying process can be removed, and pollution to the surrounding environment is avoided.

The utility model discloses a cleaning base station which at least comprises a base station body, a heating module and a fan component, the heating module and the fan component are installed on the base station body, the base station body is provided with a rolling brush cleaning tank and a drying air channel communicating with the rolling brush cleaning tank, and the drying air channel extends in the front-back direction and is provided with two side walls; the heating module is arranged in the drying air channel and comprises a hot water module used for heating liquid, a hot air module used for heating gas and a heating element used for heating the hot water module and the hot air module. The hot water module is provided with a hot water flow channel which is located in the drying air channel and is parallel to or perpendicular to the extending direction of the drying air channel. According to the technical scheme provided by the invention, the heating module of the cleaning base station has a composite heating function and does not occupy extra space of the base station.

This application relates to the technical field of firing ceramsite, and specifically discloses a coal gangue-based water-retaining ceramsite, its preparation method and application. The preparation method of the coal gangue-based ceramsite disclosed in this application is as follows: Drying: The green balls of ceramsite are fed into the drying section, and the hot air from the decarbonization section is cooled and then sent to the drying section to dry the green balls; The green balls of ceramsite are prepared by uniformly mixing coal gangue raw materials and modified silica sol and then calcined. Pyrolysis: The hot air generated from the decarbonization section is heated to 350-400 °C and then introduced into the pyrolysis section to pyrolyze the green balls. Decarbonization: The hot air from the pyrolysis section and the cooling section heats and supports combustion of the material layer in the decarbonization section to complete the decarbonization of the ceramsite. Cooling: The decarbonized ceramsite is cooled by blowing air. Using the technical solution of this application, the processing scale of coal gangue ceramsite can be increased, the energy utilization of coal gangue itself can be maximized, the production cost can be effectively reduced, and the ceramsite can meet the requirements of decarbonization, water retention and strength.

The embodiment provides a ventilation structure of a drying machine and the drying machine. The ventilation structure of the drying machine comprises a case; the inner chamber is arranged in the case; the air supply assembly is arranged in the case, the air supply end of the air supply assembly faces the inner cavity, and the air supply assembly conveys hot air to the inner cavity; the cabinet door is arranged in the case and is used for controlling the opening or closing of the inner cavity; when the inner cavity is in a closed state, an exhaust gap exists between the inner cavity and the cabinet door, and hot air conveyed to the inner cavity by the air supply assembly is exhausted out of the drying machine from the exhaust gap. An air circulation channel formed by the ventilation structure penetrates through the whole inner cavity, the drying effect can be improved, meanwhile, the ventilation structure of the drying machine does not need to be additionally provided with ventilation holes in the inner cavity, and therefore design work of the drying machine is reduced, and production efficiency of the drying machine is improved.

The invention relates to the technical field of cleaning equipment, and particularly discloses a steam cleaning machine. The cleaning machine comprises a cleaning machine body, a steam generation system, a cleaning agent conveying device, a waste water suction device, a hot air device and a control device are arranged in the cleaning machine body, the cleaning machine body is connected with a multifunctional integrated spray head through a multi-channel connector and a multi-channel connecting pipe, and the multifunctional integrated spray head is of a multi-layer hierarchical structure. The steam nozzle, the cleaning agent nozzle and the spherical suction head are sequentially arranged from inside to outside; during use, steam and a cleaning agent cooperatively soften and decompose dirt, the wastewater suction device sucks sewage through a spherical suction head of the spray head, the hot air device blows out hot air for drying, and all the systems are controlled by the control device. The cleaning device integrates the functions of steam cleaning, cleaning agent assisting, waste water sucking and hot air drying, achieves closed-loop cleaning, is convenient to operate and high in efficiency, and meets the cleaning requirements of floors, furniture, tabletops, household appliance gaps and the like in families, hotels and other scenes.

The dish-washing machine with the drying function comprises a dish-washing machine body and a drying assembly, a closed containing space is arranged in the dish-washing machine body, and the drying assembly is fixed to the outer portion of the dish-washing machine body. The drying assembly comprises a fan, an air duct, a heating wire and a mounting piece, the first end of the air duct communicates with an air outlet of the fan, and the second end of the air duct communicates with the containing space; the mounting part is arranged in the air duct, the heating wire is wound on the mounting part to form a plurality of heating rings, the plurality of continuous heating rings are distributed in a tower shape or an inverted tower shape, and a gap is reserved between every two adjacent heating rings; the fan and the heating wire are electrically connected with the dish-washing machine main body respectively; an inclined air inlet is formed in the side wall of the bottom of the dish washing machine body and communicates with the second end of the air duct. According to the dish-washing machine, air blown out by the draught fan can be evenly heated to form hot air, the hot air can rotate and flow in the dish-washing machine through the inclined air inlet angle, tableware in the dish-washing machine is evenly heated, and the drying effect is improved.

The invention discloses a wind driven generator blade deicing system and method, and relates to the technical field of wind power generation, the wind driven generator blade deicing system comprises fan blades, a generator cabin and a tower, the fan blades are fixedly connected to the peripheral side of a hub, the middle of the hub is connected with the generator cabin through a main shaft, and the lower end of the generator cabin is connected with the tower; an air heating box is arranged in the tower, air is heated through an electric heater, hot air is conveyed into fan blades, a soaking net is embedded in the fan blades, heat of the hot air is transferred to the soaking net through a heat conduction plate arranged in the fan blades to heat the fan blades, the temperature of the surfaces of the fan blades is evenly increased, and the heat conduction effect is improved. And meanwhile, hot air is blown to the surfaces of the fan blades from the annular air spraying pipes, the deicing efficiency is improved, heat generated when the generator works is absorbed through the heat exchanger, cold air is preheated, and the utilization efficiency of energy is improved.

The utility model discloses a perforated flow guide air plate for wet spunlace drying, which comprises an upper-layer flow guide air plate and a lower-layer flow guide air plate, the upper-layer flow guide air plate and the lower-layer flow guide air plate are both mounted in a drying oven, the upper-layer flow guide air plate is mounted at the upper part of the drying oven, and the lower-layer flow guide air plate is mounted at the lower part of the drying oven. And the lower-layer flow guide air plate is mounted at the lower part of the drying oven. Due to the unique penetrating type design, hot air can directly act on the surfaces of materials, the drying time is greatly shortened, and meanwhile energy consumption is reduced.

The invention belongs to the technical field of board baking, and particularly relates to a board baking device for circuit board production, which comprises a hot air circulation box, the hot air circulation box is connected with a bearing frame through a box top table, a filter assembly is arranged at the top of the bearing frame, a loading plate is longitudinally and slidably arranged in the bearing frame, a fan assembly is arranged on the loading plate, and a heating assembly is arranged at the bottom of the bearing frame. And a box door is mounted on the hot air circulation box. The air cylinder drives the carrying plate and the fan assembly to move downwards synchronously, in the downward moving process of the carrying plate, the carrying plate drives the push plate to move synchronously through the T-shaped plate, the push plate drives the baffle to slide from the airflow cavity to the heat flow cavity through the connecting rod and the sliding rod, airflow passing through the heat flow cavity is reduced, and the airflow is promoted to enter the hot air circulation box through the airflow cavity; and under the condition of ensuring the airflow intensity, the airflow temperature is reduced, the influence of hot air on lead-free soldering tin on the circuit board is reduced, and the phenomenon of poor contact between the circuit board and a component is avoided.

The utility model relates to the technical field of strip steel rolling, in particular to galvanized strip steel production rolling equipment. According to the technical scheme, the device comprises an air outlet pipe, a fixing frame, rollers and an air cooler, the rollers are symmetrically and rotationally installed in the positions, close to the upper surface and the lower surface, of the interior of the fixing frame, cooling cavities are formed in the two rollers, and the two ends of each roller are fixedly connected with a rotary joint A and a rotary joint B correspondingly; connecting pipes A are fixedly connected to the outer sides of the two rotating joints A, the tail ends of the two connecting pipes A are fixedly connected to the outer surface of an air outlet pipe, and an air inlet pipe is fixedly connected to the tail end of the air cooler output pipe. In the hot rolling process of the galvanized strip steel, the temperature of the roller is reduced, the service life of the roller is prolonged, heat of the roller is converted into hot air, production raw materials needing to be heated can be preheated, meanwhile, the hot air drying device can be used for drying the galvanized strip steel after follow-up cleaning operation, and energy consumption is saved.

The invention provides a micro-pressure air fryer which comprises a sealed cooking cavity and a hot air assembly, the hot air assembly comprises a heating piece and a hot air fan, the hot air assembly conveys hot air into the cooking cavity to cook food, the cooking cavity is provided with a steam exhaust channel, steam generated in the cooking cavity is exhausted through the steam exhaust channel, and the volume of the cooking cavity is 3-10 L. The relation between the sectional area S of the steam exhaust channel and the power density phi of the air fryer meets S = K * phi, the value of K is 0.03-1 mm < 2 > / (W / L) so that the working pressure intensity of the cooking cavity can be maintained at 80-960 pa, and the power density is the ratio of the power of the heating piece to the volume of the cooking cavity. According to the air fryer, the influence of the volume of the cooking cavity, the heating power and the sectional area of the steam exhaust channel on the working pressure of the cooking cavity is fully considered, so that the working pressure of the air fryer designed according to the application tends to be consistent, and a user can adopt the same cooking process when cooking the same food material by using different types of air fryers; different types of air fryers have good cooking consistency.

The invention discloses a system for preparing a green cementing material by thermal coupling of metallurgical slag. Comprising a reaction furnace for receiving the hot blast furnace slag and the hot steel slag, and a stirring device for stirring the hot slag in the reaction furnace, the cooling and granulating system is used for receiving the hot-state slag from the reaction furnace and carrying out cooling and granulating treatment on the hot-state slag; and the grinding system is used for receiving slag particles from the cooling and granulating system and carrying out grinding on the slag particles. According to the system for preparing the green cementing material through metallurgical slag thermal-state coupling, after steel slag is subjected to thermal-state coupling modification, the cementing activity of steel slag micro powder is remarkably improved, especially the early activity is greatly improved, and the S95-level performance requirement of the slag micro powder is met; the content of f-CaO in the steel slag is greatly reduced, and the problem of volume stability of a steel slag product is solved. The invention further discloses a method for preparing the green cementing material through metallurgical slag thermal-state coupling.