3910 results about "Hot blast" patented technology

The invention relates to the technical field of intelligent cigarette manufacturing, and discloses a cigarette making machine parameter setting prediction system based on an incoming material state. The system comprises an incoming material feature acquisition module, a process adaptation analysis module, a parameter mapping calculation module, an abnormal working condition identification module and a prediction parameter generation module which are connected in sequence. The system obtains a tobacco shred moisture content distribution curve and temperature field data in real time, and generates an incoming material state characteristic sequence in combination with the conveying speed; dividing water content fluctuation sections and associating temperature distribution rules according to the water content fluctuation sections, and generating a process adaptive partition map; establishing a time sequence mapping relation between the roller rotating speed and the hot air temperature, and generating a parameter optimization mapping table through stability comparison; and finally outputting a parameter prediction scheme by identifying the abnormal working condition deviating from the standard relationship and combining the matching of historical data and the current incoming material state. According to the system, refined parameter prediction of non-uniform supplied materials can be realized, equipment operation parameters are dynamically optimized, and the stability of cigarette production and the consistency of product quality are improved.

The invention relates to the field of flow-state solidified soil, and discloses flow-state solidified soil prepared from construction waste, preparation equipment and a preparation method. The pre-dehydration module is used for controlling the water content of discharged materials to be less than or equal to 14%; the system further comprises a main drying system, an auxiliary material adding device, a water adding device and mixing equipment. The main drying system comprises a high-temperature drying area, a high-temperature buffering area and a heat preservation discharging area which are arranged in the vertical direction, materials treated by the pre-dehydration module are lifted into the high-temperature drying area through lifting equipment, the main drying system comprises at least two sets of material conveying belts, and a plurality of hot air openings are evenly formed in the top of the high-temperature drying area; an inlet of the hot air pipe is communicated with an air cavity heated by a heat source; a recovery channel communicating with the portion, close to the bottom, of the heat preservation discharging area is arranged on one side of the main drying system, and an obliquely-arranged dust baffle is arranged in the recovery channel. According to the invention, the problems of fluctuation of construction waste sources and large change of material moisture content in the prior art are solved.

The invention discloses a horizontal sludge dryer which comprises a rack, a first drying cylinder is arranged on the rack in an obliquely downward mode through a supporting piece, a sludge feeding mechanism is arranged in the upper end of the first drying cylinder, and a cyclone conveying mechanism in the first drying cylinder is connected with the air outlet end provided with a screw air compressor through a connecting pipe. A crushing mechanism is arranged at the discharging end of the sludge feeding mechanism, a second drying cylinder is movably connected to the discharging end of the first drying cylinder, a roundabout conveying mechanism is arranged in the second drying cylinder, a hot air inlet pipe is arranged in the lowest end of the second drying cylinder, and a discharging control mechanism is arranged in the lower end of the second drying cylinder. An air outlet is formed in the lower end of the first drying cylinder and connected with a sludge feeding mechanism through an air return pipe, and a first rotation driving mechanism is arranged on the rack. The sludge drying device is simple in structure, sludge can be effectively crushed, heat and mass transfer is enhanced, the drying path is prolonged, and waste heat can be effectively recycled.

The invention relates to the technical field of automobile parts, in particular to an automobile rubber sealing part and a preparation method thereof. A metal framework base material is stamped in a numerical control mode, and a framework blank is obtained by controlling deviation through a positioning pin; after being slightly roughened, the blank is phosphatized, coated with a special rubber prime coat adhesive and subjected to infrared drying; weighing the raw materials according to the ratio, feeding into an internal mixer by stages, and mixing at controlled temperature and speed to obtain a rubber compound; feeding the mixed rubber into a double-roller open mill to press a continuous rubber sheet in a step-by-step distance-adjusting manner; performing hydraulic cutting by a special cutting die to obtain a slightly large formed rubber sheet; sticking the molded film to the framework into a mold with a positioning boss, exhausting, boosting and vulcanizing to obtain a semi-finished product; feeding the semi-finished product into a hot air oven and introducing nitrogen for secondary vulcanization; and carrying out laser thickness measurement and visual inspection, packaging qualified products in an anti-static manner, and sealing in a corrugated carton. The framework precision and the rubber bonding strength are improved, and degumming is avoided; stable rubber material performance and uniform rubber sheet thickness are guaranteed, and material shortage is reduced; vulcanization displacement and bubbles are prevented, rubber oxidation and aging are inhibited, and the durability and stability of the product are improved.

The invention relates to the technical field of electric heater preheating, in particular to an electric heater preheating system and method. Wherein the electric heater comprises a shell, an electric heating tube and a junction box; the preheating device comprises a hot air module, a control module, a pressure sensor, a temperature and humidity sensor and a switch valve. The hot air module comprises a draught fan, a heating piece and a connecting air pipe, and the connecting air pipe is connected with the first pipe opening so that hot air generated by the hot air module can be input into the shell through the first pipe opening. The second pipe orifice is used for discharging air, the pressure sensor and the temperature and humidity sensor are arranged at the second pipe orifice to detect a pressure value, a temperature value and a humidity value, and the switch valve is arranged at the second pipe orifice to adjust the opening and closing and / or the opening degree of the second pipe orifice. When the electric heater is in a shutdown state, the external preheating device is connected with the electric heater to form a preheating system, energy of a molten salt system does not need to be depended on, non-internal circulation air is utilized, and preheating and moisture removal of the electric heater are achieved.

The cooking utensil comprises a box body and a hot air assembly, the box body comprises a door body and a cooking cavity, the door body is used for opening or closing the cooking cavity, an air inlet area and an air outlet area are arranged on a top plate of the cooking cavity, and the air inlet area is farther away from the door body than the air outlet area; the hot air assembly comprises a flow guide plate, an impeller, a driving part and a heating part, the flow guide plate is arranged on the side, away from the cooking cavity, of the top plate and encloses a heating cavity with the top plate, the air inlet area and the air outlet area communicate with the heating cavity, and the impeller is rotatably arranged in the heating cavity to drive airflow to flow from the air outlet area to the air inlet area; the rotating axis of the impeller is perpendicular to the top plate, the driving piece is arranged on the outer side of the heating cavity, a rotating shaft of the driving piece penetrates through the flow guide plate and is connected with the impeller, and the heating piece is arranged in the heating cavity and located between the impeller and the air inlet area. As the air inlet area is farther away from the door body than the air outlet area, the influence of high-temperature airflow on the door body is reduced, and the problem that temperature rise of the door body exceeds the standard is solved.

The invention discloses a rotary kiln pyrolysis process preheating and replacing method which comprises the following steps: replacing and preheating an upgrading system when a rotary kiln is started, performing low-load operation on the rotary kiln, heating the rotary kiln by a rotary kiln hot blast stove and a flue gas fan, closing a pipeline valve from a dry gas fan to a first dust remover, and performing low-load operation on the rotary kiln; a rotary kiln nitrogen replacement valve is slightly opened, nitrogen enters the rotary kiln through a dry gas guide screw for replacement and heat removal, an oil and gas pipeline is preheated, direct cooling tower spraying cooling water and indirect cooling tower circulating cooling water are put into use, a coal gas fan is started for system circulation, and an electrical tar precipitator outlet is opened to a rotary kiln starting line valve; the invention further discloses a rotary kiln quality improvement system, the rotary kiln pyrolysis process preheating and replacement method is adopted, the start-up time is effectively shortened, the investment and operation cost is saved, and meanwhile a foundation is laid for long-period stable operation of the system.

The invention provides a mobile solid heat storage and storage battery coordinated island comprehensive energy system, and belongs to the technical field of electric energy supply, the system comprises a heat storage and heat exchange unit, a heat exchange fan, a thermal insulation layer, an energy storage battery, a rapid power socket, an instrument cabinet, a water circulation system, a heat exchange water pump and an inverter, and the modular and container type design is adopted; and mobile deployment and flexible expansion are realized. According to the system, electric energy is converted into heat energy for storage through the heat storage and exchange unit, time-shifting storage of the electric energy is achieved by means of the energy storage battery, independent supply and efficient complementation of electric energy and heat energy are achieved through intelligent coordination control, electric power, high-temperature hot air and hot water can be stably output, and the diversified energy utilization requirements of remote areas, emergency disaster relief and field operation island scenes are met. According to the invention, the energy self-sufficiency rate and the energy consumption safety of the island scene are obviously improved, the operation cost is reduced, and the method is green and environment-friendly and has national defense, social and economic benefits.

The invention belongs to the technical field of intelligent control of industrial heating equipment, and particularly relates to a big data self-learning evolution method for an intelligent burning furnace model of a hot blast stove. According to the method, multi-source data such as fuel components and temperature fields are collected in real time, and a standardized input data set is constructed after wavelet noise reduction and principal component analysis processing. The model can dynamically optimize the air-fuel ratio, predict the hot air temperature and correct the equipment parameter deviation, and stable combustion is achieved. When effective samples are accumulated to a threshold value, the system automatically triggers parameter iteration, key parameters are reserved and secondary parameters are updated by utilizing transfer learning, encryption gradient aggregation and knowledge sharing among multiple furnaces are realized by virtue of federated learning, and distribution and deployment are performed after a global optimization model is formed. And finally, according to the model output, a closed-loop regulation and control fuel valve, a fan and other execution mechanisms are realized, the temperature and energy consumption are monitored in real time to evaluate the evolution effect, and a continuously optimized intelligent control cycle is formed. According to the method, the control precision and the combustion efficiency are remarkably improved, and energy conservation and consumption reduction are effectively achieved.

The utility model discloses a fan and an air duct type air conditioner. The fan comprises a volute. The volute comprises a volute body and a movable inner shell. The volute body is provided with a side air outlet located in the side face and a lower air outlet located in the bottom face. The movable inner shell is arranged on the inner side of the volute body and provided with a ventilation opening. The movable inner shell is rotatably arranged around the axis of the fan relative to the volute body so that the fan can be switched between the side air outlet state and the lower air outlet state. In the side air outlet state, the ventilation opening communicates with the side air outlet to form a side air outlet channel used for supplying cold air. In the lower air outlet state, the ventilation opening communicates with the lower air outlet to form a lower air outlet channel used for supplying hot air. On the plane perpendicular to the axis of the draught fan, the projection of the side air outlet channel forms a side air outlet volute molded line. And the projection of the lower air outlet duct forms a lower air outlet volute molded line. The shape of the side air outlet volute molded line is different from that of the lower air outlet volute molded line. According to the utility model, the working noise of the fan is effectively reduced.

The invention discloses an electrode slurry dynamic curing method. Rapidly heating a current collector-slurry interface to 100-120 DEG C by adopting electromagnetic induction, and triggering adhesive crosslinking and thermal expansion microspheres to generate pre-compressive stress; stress is relieved through phase change microcapsules in the hot air drying process of 70-90 DEG C; and finally, curing is completed at the temperature of 110-130 DEG C. The electrode slurry comprises thermal expansion microspheres and phase change microcapsules; the initial expansion temperature of the thermal expansion microspheres is 75-105 DEG C, and the phase change temperature of the phase change microcapsules is 45-65 DEG C; by reversing a traditional curing path and combining thermal expansion microspheres and phase change microcapsules with specific temperature response, the problems of demolding and cracking caused by negative electrode drying stress are solved, the interface integrity is remarkably improved, and the cycle life is remarkably prolonged.

The utility model relates to a coffee bean baking machine which comprises a baking machine shell, a baking pot, a feeding channel, an exhaust channel and a transparent observation window. A baking cavity is formed in the baking machine shell; the baking pot is obliquely arranged in the baking cavity towards the front of the baking machine shell; a bean outlet communicated with the bean outlet space is formed in the bottom of the right front side of the baking pot, and the hot air supply device is arranged in the baking machine shell and used for providing heat and air for the interior of the baking pot from the bottom of the baking pot; one end of the feeding channel is communicated with the interior of the baking pot, and the other end of the feeding channel extends above the baking machine shell; one end of the exhaust channel is communicated with the interior of the baking pot, and the other end extends above the rear side of the baking machine shell; the transparent observation window is obliquely arranged on the top of the baking machine shell and used for observing the interior of the baking pot. According to the coffee bean baking machine, coffee beans can rotate and turn over at the same time through small wind power, it is guaranteed that the coffee beans are baked evenly, and meanwhile excessive flavor loss of the coffee beans is avoided.

The invention provides a precise baking process optimization method and system for a mini LED circuit board, a baking oven is divided into a preheating area, a main baking area and a cooling area, a double-circulation hot air system and top vertical airflow are adopted, infrared and digital humidity sensors are combined, independent temperature and humidity regulation and control are realized, nitrogen-argon mixed gas is injected, and opening and closing of injection holes are adjusted based on the thickness of a substrate, so that the precise baking process of the mini LED circuit board is realized. Maintaining positive pressure and oxygen content in the box based on a three-dimensional pressure sensor network, prolonging heating time according to environment humidity in a preheating stage, performing gradient control on a heating rate, constructing a humidity-moisture absorption rate mapping table and a three-layer neural network model, adjusting power output in combination with Z-axis temperature difference, and adopting forced air cooling and nitrogen sealing procedures in a cooling area; and a plate explosion prediction model is established, a historical data triggering parameter adjustment mechanism is combined, baking parameters are written into the two-dimensional code of the substrate through a block chain technology, and traceability of the whole process is realized.

The utility model discloses a movable grain drying device which comprises a vehicle body, a lifting device, a grain barrel, a conveying device and a drying assembly, the lifting device comprises a first frame body and a second frame body, and a feeding port and a driven shaft are arranged at the bottom of the first frame body; a driving shaft, a first discharging port, a second discharging port and a discharging baffle are arranged at the top of the second frame body, the grain barrel comprises a first barrel body, a second barrel body and a third barrel body which are sequentially arranged in a sleeving mode from outside to inside, a second telescopic assembly is arranged on the outer side of the grain barrel, and a grain discharging device is arranged at an outlet in the bottom of the first barrel body. The two ends of the conveying device are matched with the grain discharging device and the first frame body respectively, the drying assembly comprises a hot air assembly and a drying cylinder, and the drying cylinder is installed in the grain cylinder. The grain barrel can stretch out and draw back, and the lifting device can be bent, so that the grain drying machine is small in size, low in height, convenient to move and transport and high in grain drying efficiency.

A baking and roasting cooking device. The baking and roasting cooking device comprises a cavity assembly (10), a hot air fan baffle (20), a backplate (30), and a purification assembly (40), wherein the cavity assembly (10) and the backplate (30) are respectively located on either side of the hot air fan baffle (20); a cooking cavity (61) is formed between one side of the hot air fan baffle (20) and the cavity assembly (10), and a hot air cavity (62) is formed between the other side of the hot air fan baffle (20) and the backplate (30); the hot air fan baffle (20) is provided with an air discharge hole and a return air hole (211) so as to provide communication between the cooking cavity (61) and the hot air cavity (62); and at least part of the purification assembly (40) is provided in the hot air cavity (62).

The utility model relates to the technical field of pet bathing, and discloses a hot air circulation structure suitable for pet bathing, which comprises a machine body, an inner cavity for containing a pet is arranged in the machine body, an air inlet and an air outlet are arranged on the inner side wall of the inner cavity, an air blower and a heater are arranged in the machine body, and air blown out by the air blower is heated by the heater and then flows into the inner cavity. Air enters the inner cavity from the air inlet, and air in the inner cavity is exhausted from the air outlet; after a pet is placed in the inner cavity, the blower blows hot air heated by the heater into the inner cavity through the air inlet, the hot air dries the pet in the process of flowing in the inner cavity, the air body in the inner cavity is exhausted through the air outlet, the air body forms a circular flowing state in the inner cavity, automatic drying of the pet is achieved, operation is convenient, the drying efficiency is high, and the pet drying efficiency is high. And the consumed time is short.

The invention belongs to the field of artificial intelligence, particularly relates to a multivariable self-optimization control coal mill agent operation method, and aims to solve the problems of variable coupling interference, parameter solidification lag and poor working condition adaptability in traditional control. According to the strategy, an attention mechanism-based LSTM dynamic model is constructed, and future states of six types of variables such as air volume and temperature are predicted; defining a weighted optimization function fusing powder making efficiency, energy consumption, wear and stability, and introducing a soft constraint to guarantee a safety boundary; an optimal control combination is searched on line every five seconds by adopting a depth deterministic strategy gradient algorithm, and the four-dimensional action space of an air door, a hot blast valve, a coal feeder and a grinding roller is covered; and triggering an incremental learning fine tuning model through residual feedback to prevent disastrous forgetting. According to the scheme, multivariable cooperation, online self-optimization and intelligent safety control under all working conditions are realized, and the dynamic response capability and the comprehensive operation efficiency of the coal mill are remarkably improved.

The utility model discloses a workpiece drying device which comprises a drying box and a workpiece conveying device. A workpiece conveying device is arranged in the drying box in the front-back direction, and a feeding port and a discharging port are formed in the front portion and the back portion of the drying box correspondingly. Wherein sliding doors are installed on the feeding port and the discharging port respectively, each sliding door comprises a door leaf and a door leaf air cylinder, each door leaf air cylinder is fixedly installed on the top of the drying box, and an output shaft of each door leaf air cylinder is fixedly connected to the top of the corresponding door leaf; the top center of the drying box communicates with an air inlet pipe, and the front and back positions of the bottom of the drying box communicate with an air return pipe; the workpiece conveying device comprises a conveying bracket; due to the arrangement of the sliding door, the phenomenon that hot air escapes from the feed port and the discharge port is reduced; the position of the air return pipe is close to the feeding port and the discharging port, so that air close to the feeding port and the discharging port can be sucked in by the air return pipe, and the situation that hot air escapes from the feeding port and the discharging port is further reduced.

The invention provides an intelligent energy efficiency management method and system for a solar photo-thermal-photovoltaic-heat pump coupling system. The method comprises the steps that coupling energy state vectors including photovoltaic power generation real-time output power, the hot air temperature of an air duct outlet of a solar heat collector, the operation frequency of a heat pump compressor and the water temperature of the middle of a heat storage water tank are constructed; dynamically calculating a continuous discriminant quantity and a discrete risk sign based on the vector so as to evaluate the supply and demand trend and the energy efficiency risk of the system; generating a multi-path combined control strategy covering an electric side link, a photo-thermal link, a heat pump link and a heat storage link, and performing effective filtering on a control command in combination with an equipment state inspection result; and finally, executing instructions are issued in stages according to path priorities, so that closed-loop energy efficiency adjustment is realized. According to the invention, the cooperation efficiency and the operation safety of the multi-energy coupling system are improved.

The invention provides an intelligent temperature regulation control method for a hot blast stove system based on a prediction model and self-adaptive control. The method comprises the following steps: S1, collecting operation data of a hot blast stove; s2, establishing a prediction model; s3, designing an intelligent temperature regulation controller based on model predictive control (MPC) to realize accurate prediction and regulation of the target temperature; s4, designing an air-fuel ratio (AFR) adaptive constraint mechanism, and dynamically optimizing the combustion efficiency and the emission performance; s5, a closed-loop intelligent temperature adjustment control execution unit is constructed, and real-time adjustment of key operation parameters is achieved; and S6, system integration and online deployment are completed, and it is ensured that the hot blast stove can keep stable temperature control under different working conditions and disturbance conditions. According to the method, through combination of prediction and adaptive constraint, the response speed and the control precision of the system to the working condition change are improved, and the operation stability is improved.

The utility model discloses a heating device of a body dryer, and aims to provide the heating device of the body dryer, which has the advantages that the heating range and the heating mode are widened, the assembly and the maintenance are convenient, and the use adaptability and the practicability are improved through adjustment. The machine comprises a machine body; one end of the mounting cylinder is detachably connected with the machine body, and a heater is connected in the mounting cylinder; the fixed rack is connected with the mounting cylinder; one end of the hot air cylinder is clamped with the other end of the mounting cylinder, the machine body is provided with a hot air opening, the other end of the hot air cylinder is connected with the hot air opening, and the hot air cylinder is movably connected with an air outlet sleeve shell; the hot air panel is movably connected with the air outlet sleeve shell, the hot air panel is provided with a straight air opening and a sweeping air opening, the straight air opening is connected with a barrier strip in an opening and closing mode, and the sweeping air opening is connected with fan blades in an opening and closing mode; and the air guide assembly is connected with the machine body. The heating structure of the body dryer has the advantages that the heating structure of the body dryer is convenient to assemble, disassemble and maintain; heating modes are increased, the heating range is widened, and then applicability and practicability are enhanced.

The invention discloses a process and system for preparing an auxiliary cementing material by calcining granular coal gangue coupled with a cement clinker sintering system, and the process comprises the following steps: treating large undisturbed coal gangue to obtain granular coal gangue, and quantitatively analyzing minerals in the granular coal gangue; feeding the granular coal gangue raw material into an activating calcining kiln for activating and calcining; then feeding into a grate cooler for cooling to obtain calcined activated coal gangue; wherein an activation calcination heat source comes from high-temperature section hot air of a grate cooler and hot air at an outlet of a C4 preheater, the proportion of the high-temperature section hot air, the hot air at the outlet of the C4 preheater and combustion-supporting air is controlled, and temperature and oxygen concentration adjustment at the activation calcination stage is achieved. According to the invention, the system for preparing the auxiliary cementing material by calcining the coal gangue is coupled with the original cement clinker sintering system, so that the on-line doping of the auxiliary cementing material in the cement clinker is realized, and meanwhile, the carbon emission is reduced.

The invention provides a wind driven generator blade deicing system and a phase change microcapsule coating spraying process, and relates to the technical field of wind power generation equipment protection, the deicing system comprises a heating module, a spiral flow guide rib, a phase change microcapsule coating and a control module; the heating module comprises a heating piece and a fan communicated with the heating piece; the spiral flow guide rib is used for forming a rotational flow air duct, so that hot air formed by heating of the heating module forms rotational flow air flow; the phase change microcapsule coating is at least coated on the wall surface of the inner cavity of the blade; the control module is in communication connection with the heating piece and the draught fan and is configured to adjust the rotating speed of the draught fan and the heating power of the heating piece at least according to the state of the phase change microcapsule coating. The deicing system improves the heat transfer efficiency, enables hot air to effectively cover all areas of the blade, prolongs the residence time of the hot air in the inner cavity of the blade, and improves the hot air utilization rate. And the phase change microcapsule coating and the rotational flow airflow have a synergistic thermal effect, so that the temperature of the wall surface of the blade is effectively, quickly and uniformly increased, and the deicing efficiency is improved.

The embodiment of the present application provides a temperature adjusting method, a temperature adjusting system, a dryer and a controller for multiple dryers. Each dryer comprises a temperature adjusting mechanism, each temperature adjusting mechanism comprises a hot air door, the multiple dryers use a same heat source, and the temperature adjusting method comprises the following steps: determining a target drying temperature interval of a to-be-dried object in each dryer; in the process of starting the heat source to supply heat to the multiple dryers, acquiring the inlet temperature and the current drying temperature of the hot air door of each dryer in real time, so as to control the temperature adjusting mechanism to adjust the opening degree of the hot air door of each dryer, so that the current drying temperature is in the target drying temperature interval. The hot air is generated by the heat source, and the drying temperature required, the temperature after heat energy loss and the current drying temperature are used to realize accurate temperature control for each dryer. Therefore, heat energy is fully utilized, and the temperature adjusting method of one heat source corresponding to multiple dryers is realized.

The invention belongs to the technical field of paint spraying waste gas treatment equipment, and particularly relates to a polishing primer chamber paint mist treatment system capable of improving fine paint mist trapping efficiency, which comprises a box type glass fiber filter, a bag type dust collector, an activated carbon adsorption assembly and a desorption catalytic oxidation unit. Paint spraying waste gas is firstly subjected to inertia retardation of a glass fiber structure and fiber trapping to achieve paint mist pre-filtration, and then enters a bag type dust collector to be subjected to deep fine filtration; the follow-up VOC airflow is guided into the activated carbon adsorption unit to be concentrated and adsorbed. An adsorption air path provided with an air inlet valve and a desorption air path provided with an air outlet valve are interlocked and switched, VOC in activated carbon is desorbed and transferred to a desorption pipeline in a hot air desorption mode, waste gas subjected to cold supplementing and air mixing adjustment finally enters a catalytic bed, catalytic oxidation is completed at the low temperature, reaction conditions are maintained through a combustor, and purified gas is discharged after reaching the standard through a chimney. The device has the advantages of high paint mist trapping efficiency, high activated carbon adsorption utilization rate, low catalytic oxidation energy consumption and the like.

The invention relates to the technical field of dryers, in particular to a particle material rotary dryer which comprises a support, a main barrel and a screening barrel. The main barrel is obliquely arranged on the support and can rotate around the axis of the main barrel, a lifting section is arranged in the main barrel and comprises a plurality of lifting plates, the lifting plates are evenly distributed on the inner circumferential wall face of the main barrel, and each lifting plate is of an L-shaped structure. The screening barrel is located in the main barrel body and coaxial with the main barrel body, screening holes are formed in the screening barrel, and the hole diameters of the screening holes are gradually increased in the rotating direction of the main barrel body. According to the rotary dryer for the particle materials, the screening barrel is arranged in the main barrel, material grading and peak shifting falling are achieved, the larger the particle size of the materials is, the longer the rotating distance is, the higher the lifting height is, the later the falling time is, and the longer the contact time with hot air is, and the material falling uniformity and the material drying quality stability are improved.

The utility model discloses a cloth drying device, which belongs to the technical field of cloth production and processing and comprises a supporting device, a drying and dehumidifying device and an adjusting and flattening device, and the drying and dehumidifying device used for drying and dehumidifying cloth and the adjusting and flattening device used for guaranteeing flattening output of the cloth are mounted on the supporting device. The drying and dehumidifying device comprises a drying assembly used for drying and an air return assembly used for forming a circulating air channel to bring out moisture. The drying assembly is installed on the inner side of the supporting device and connected with the adjusting and flattening device. The air return assembly comprises a mounting frame, an air blowing component, an air blocking frame and a hot air dehumidifier. By means of the mode, the air blowing component and the hot air dehumidifier are matched with the drying assembly to form a hot air loop for circulating dehumidification, cloth can be evenly and rapidly dried, meanwhile, moisture is discharged, the cloth drying effect is good, resources are saved through synchronous recovery of hot air, and resource waste is avoided.

This invention discloses a wind turbine blade air-thermal de-icing system with a flexible duct and a method for fixing and disassembling the flexible duct. The system includes a heater, a blower, and a duct. The duct is formed by connecting a rigid duct and a flexible duct. The air inlet of the heater is connected to the air outlet of the blower, and the air outlet of the heater is connected to the air inlet of the rigid duct. The air outlet of the rigid duct is connected to the air inlet of the flexible duct. The flexible duct is arranged inside the leading edge cavity of the blade, and several air guide holes are opened on the windward side of the flexible duct facing the blade. A hook is installed at regular intervals along the longitudinal axis of the blade web inside the leading edge cavity. Multiple fixing ropes are set on the flexible duct facing the leeward side of the blade corresponding to the hooks. The flexible duct is fixed to the blade web by the fixing ropes being inserted into the openings of the hooks. This invention can extend the duct to the blade tip, enhancing the de-icing effect at the blade tip, and can also create a new hot air return channel within the blade tip blockage, achieving the effect of air-thermal de-icing.

The utility model provides drying equipment for extracting salt from desulfurization liquid, and relates to the technical field of desulfurization liquid salt extraction processes, the drying equipment comprises: a drying tank, the upper part of which is connected with a feed port and an exhaust port, and the lower part of which is connected with a discharge port; a partition plate is arranged on the inner side of the drying tank and divides the inner space of the drying tank into a drying chamber and an air supply chamber, the drying chamber is located above the air supply chamber, and the air supply chamber is provided with an air inlet. The three-dimensional spiral track is arranged in the drying tank, and ventilation holes are distributed in the three-dimensional spiral track; the two-dimensional spiral distribution pipe is positioned below the three-dimensional spiral track; the two-dimensional spiral distribution pipe is provided with an air outlet; the fan is arranged in the air supply chamber; and the heater is arranged in the air supply chamber. Through the arrangement of the three-dimensional spiral track, the moving path of materials can be prolonged while the materials are conveyed by utilizing the gravity of the materials, and the materials are in a moving state when rolling downwards, so that the contact area between the materials and hot air is larger on the whole, and the drying efficiency can be improved.

The utility model relates to the field of mechanism sand processing especially mechanism sand drying and humidifying equipment, in view of the inconvenient up and down material turning and the lack of humidifying function problem in the prior art mechanism sand drying, present the following scheme, it includes drying jar, the drying jar top installs the feed hopper, and the drying jar outer periphery installs the hot blast machine for conveying hot air to its inside, install in the drying jar inside: screening mechanism, it includes the screen cloth installed in the drying jar inside, installs the material scraping subassembly in the drying jar top and installs the discharge pipe in the screen cloth bottom, the screen cloth top deviates the position of the feed hopper just below and is equipped with with the blanking mouth of discharge pipe intercommunication, the utility model not only can conveniently screen before drying mechanism sand, and also can conveniently turn the bottom layer material to the upper layer when drying, effectively improved the drying efficiency, and also have the humidifying function, and it is convenient to humidify according to the need.