32 results about "Mechanical ventilation" patented technology

The present application relates to a kind of energy-saving and environment-friendly mechanical ventilation cooling tower, by optimizing the gap design of cooling fan blade and wind cover, using the negative pressure generated by blade rotation to suck in cooling air, and the hot water in heat dissipation assembly forms convection heat exchange, realizes efficient cooling.At the same time, the ascending airflow drives the blade with porous fiber bundle to rotate, on the one hand, the kinetic energy is recovered by wind power generator and converted into stable electric energy through control inverter unit, on the other hand, the water vapor in air is absorbed and condensed by porous fiber bundle, and water resources are recovered.The present application does not need to transform existing cooling tower, with simple structure, easy installation, energy saving, water saving and environmental protection effect, and significant economic benefit.

The application relates to a ship air exhaust technology field, in particular to a control method of a cabin air intake and exhaust machine, frequency of the variable frequency air supply and exhaust mechanical ventilation is very high, the variable frequency control method is optimized, the requirements of the ship owner can be met, better market can be won, the air intake and exhaust amount of the cabin is controlled through the more optimized variable frequency control method, the problem that the low-frequency work of the variable frequency air supply machine cannot meet the required air consumption of the large load working condition of the main generator in the low-temperature environment of the cabin in winter is solved, and the method is suitable for the SOV ship type with small space and compact layout.

The utility model relates to the technical field of cooling towers, and provides a mechanical ventilation cooling tower water retaining device which comprises a tower body. The supporting table is fixedly connected to the upper end of the inner wall of the tower body; the rotating frame is fixedly connected to the top end of the sliding block; the limiting grooves are symmetrically formed in the inner wall of the rotating frame, water retaining frames are arranged in the rotating frame at equal angles, limiting strips are fixedly connected to the two sides of each water retaining frame, water retaining plates are fixedly connected to the inner walls of the water retaining frames at equal intervals, and a handle is fixedly connected to one side of each water retaining frame. A cover plate is clamped on one side of the tower body; through the arrangement of the mounting assembly, quick disassembly and assembly of the water fender are achieved, quick sliding disassembly and assembly between the water retaining frame and the rotating frame are facilitated through a handle, meanwhile, the sliding block can slide out of the supporting table through the notch, and then quick disassembly and assembly maintenance of the rotating frame and the water fender can be achieved; tedious and inconvenient disassembly and assembly caused by a traditional bolt fixing mode and the like are avoided, and the practicability is improved.

The invention relates to the technical field of circulating cooling equipment, in particular to a blast closed type mechanical ventilation cooling tower, a circulating cooling system and a using method. A blast closed type mechanical ventilation cooling tower comprises a tower body, the tower body is internally provided with a heat exchange space and a liquid collection space, the heat exchange space is communicated with the liquid collection space, and the first bottom face of the heat exchange space is higher than the second bottom face of the liquid collection space; the heat exchange assembly comprises a heat exchanger, the heat exchanger is arranged in the heat exchange space, and liquid to be cooled flows in the heat exchanger; and the cooling assembly comprises a cooling spray head and a cooling pipe, the cooling spray head is arranged in the heat exchange space, the cooling pipe is connected with the liquid collecting space and the cooling spray head, and cooling liquid is contained in the liquid collecting space. The invention provides a blast closed type mechanical ventilation cooling tower, a circulating cooling system and a using method, and aims to solve the problems that when a pipeline of a user cooling system is broken, cooling water is mixed with liquid releasing decay heat, and the liquid releasing decay heat is brought into the mechanical ventilation cooling tower by the cooling water.

The utility model provides a mechanical draft cooling tower, which relates to the technical field of cooling towers and comprises a cooling tower body, an air inlet filter is fixedly connected outside an air inlet of the cooling tower body, and a protective screen plate is mounted in front of the inside of the air inlet filter. The lower edge of the protective screen plate is hinged to the bottom of the interior of the air inlet filter through supporting shafts on the two sides, a driving motor is installed on the right surface of the air inlet filter through bolts, and after the cooling tower stops running, the protective screen plate shakes under the cooperation of the driving motor and a vibration rotating disc; impurities attached to the surface of the protective net plate can fall off under the shaking action of the protective net plate, so that the problem that the cooling efficiency of the cooling tower is influenced by air permeability reduction caused by the fact that the impurities block the protective net plate is avoided, efficient cleaning of the cooling tower is facilitated, and the problems that after a traditional protective net intercepts the impurities, part of the impurities are attached to the protective net and cannot fall off, and the cooling efficiency of the cooling tower is affected are solved. The air permeability of the protective net is reduced, the power consumption of the cooling tower is increased, and the cooling efficiency of the cooling tower is reduced.

The utility model provides a kind of clamping and fixing device of measuring cooling tower drift rate filter paper, located cooling tower air outlet pipe top, including support plate and clamping component, the end face of support plate away from cooling tower is placed with filter paper, and the through hole corresponding with filter paper is opened on support plate, and the through hole is completely covered by filter paper;Support plate is provided with multiple, and multiple support plates are interconnected to correspond different size cooling tower air outlet pipe;The clamping component is set to the end face of support plate away from cooling tower, and the clamping position of clamping filter paper is formed between clamping component and support plate.The utility model has beneficial effect: the clamping device designed in the present application is simple to disassemble, small in occupied volume, suitable for detection, ready-to-use and installation, and the device is more convenient to set, modular expansion is achieved, and various structures such as mechanical ventilation cooling tower, closed tower and the like are adapted.

The invention relates to an automated suctioning system (100) for simultaneous suctioning (in pulsatile mode) and ventilation of tracheal secretions, improving airway management in mechanically ventilated patients. It includes a vacuum pump (101), a modified multilumen endotracheal tube (102) with valves for suction control, an oral suction adopter (103), subglottic suction tubing (104), and a ventilation-suction switch (105) to synchronize suctioning and ventilation. A lumen obstruction detector (106) identifies obstructions, while an RTOS-based microcontroller (107) manages real-time tasks. Pressure sensors (108, 109) monitor suction levels and detect blockages, and a liquid dispensing system (110) delivers mucolytic agents. A user interface device (111) provides feedback and alerts. The system dynamically adjusts suction pressure, ensuring patient safety, reducing ventilation interruptions, and enhancing secretion management in critical care settings.

The application discloses a kind of based on mountain top geographical advantage sewage zero discharge spray evaporation method, belong to sewage advanced treatment and ultimate disposal technical field.The system will be wholely set in mountain top, ridge or other altitude significantly higher than the geographical position of pre-treatment unit and sensitive area.Spray evaporation field system includes with low-position clear water source connection high-pressure water supply system, atomizing nozzle array arranged in mountain top and intelligent control system.The method makes full use of the natural advantages of mountain top perennial wind, atmospheric diffusion condition is good, pre-treatment standard clear water is sprayed to high altitude by high-pressure atomization, realizes quick evaporation and zero liquid discharge.The core invention point is: by geographical high-position arrangement, natural ventilation evaporation efficiency is greatly strengthened, and mechanical ventilation energy consumption can be basically or completely saved;Utilize topographic relief to form natural environmental isolation zone, minimize the visual and odor impact of spray process on surrounding environment;And can realize intensive layout with the same built in mountain top biological treatment unit (such as three-dimensional natural ventilation biological membrane array tower) and potential energy sharing, build complete low-energy consumption mountainous area sewage zero discharge treatment system.

The utility model relates to the technical field of cooling towers, in particular to an efficient mechanical draft cooling tower, which solves the problem of low heat exchange efficiency of a mechanical draft cooling tower in the prior art and comprises a shell, a wind power component, a cooling component and a flow guide plate, and the wind power component, the cooling component and the flow guide plate are positioned in the shell. An air outlet, an air inlet, a first through hole and a second through hole are formed in the shell, the wind power assembly is arranged at the air outlet of the shell, the cooling assembly is arranged below the wind power assembly and located at the upper end of the air inlet, and the flow guide plate is arranged at the air outlet of the shell and used for guiding air at the air outlet. The efficient mechanical draft cooling tower provided by the utility model is used for improving the cooling efficiency of the cooling tower.

A ventilation device for mechanically ventilating patients includes an operating device for setting at least one ventilation parameter. The operating device includes a manipulation element that can be manually operated by an operator to manually set the at least one ventilation parameter, and a control unit operable to automatically determine a target value for the at least one ventilation parameter on the basis of detected values of characteristic variables. The operating device is provided with a first haptic feedback unit configured to control the manipulation element in terms of a first haptic feedback to provide perceptible feedback, emphasizing the position of the manipulation element corresponding to the target value determined by the control unit.

The present application relates to a kind of mixed cross flow enhanced condensation mist eliminator, including vane unit in the main flow path of cooling tower, secondary air inlet unit is arranged on the outer side of the side wall of main flow path two sides, vane unit: by several arc vane of interval side by side, arc flow path of wet hot air flow is formed between adjacent arc vane, the top surface of the convex part of arc vane is provided with water hook facing the direction of airflow entering, the surface of arc vane is provided with spoiler rib, the dry cold air flow from the secondary air inlet unit is arranged with 30 °~60 ° oblique angle at the spoiler rib;Secondary air inlet unit: with secondary air inlet and louvre group, secondary air inlet is fixed in the outer part of the side wall of cooling tower, louvre group is located in the interior of secondary air inlet.The present application directly contacts and mixes saturated wet hot air and secondary dry cold air, realizes the function integration of temperature reduction, humidity reduction, water collection in limited space, makes the mist elimination and energy consumption performance of mechanical ventilation cooling tower synchronous promotion.

The invention discloses a transmission device for assisting a small animal to autonomously breathe hyperpolarized gas, which is characterized in that a sealed breathing mask is used for replacing a trachea cannula, and stable pressure of atmospheric pressure at the breathing mask is used for replacing periodic pressure change under high-pressure forced ventilation at the cannula; the animal spontaneous respiration gas amount is used for replacing the manually set fixed gas amount, and the state of inhaled gas is controlled under spontaneous respiration to replace fully controlled mechanical ventilation in the respiration process; the invention further discloses a method for assisting the small animal in autonomously breathing the hyperpolarized gas, the device can supply the gas amount required by autonomously breathing to the experimental animal according to the self-breathing state of the experimental animal, and the gas amount inhaled by the experimental animal each time is determined by the self-breathing state, so that the experimental animal can autonomously breathe in a free state; lung expansion in an abnormal breathing state can be avoided, so that a more accurate ventilation function and qi-blood exchange function evaluation result is obtained.

The application relates to the technical field of cooling towers, and discloses a high-efficiency steam-driven mechanical ventilation cooling tower system and method, which comprises a tower body, a liquid conveying pipe fixedly arranged in the interior of the tower body, an impeller rotationally connected to the interior of the tower body, a rotating assembly fixedly arranged on the outer wall of the impeller, the rotating assembly comprising a second umbrella wheel, the outer wall of the second umbrella wheel being rotationally connected to the interior of the tower body, a first runner fixedly connected to the outer wall of the second umbrella wheel, a belt arranged on the outer wall of the first runner, a second runner arranged on the outer wall of the belt, a rotating column fixedly connected to the interior of the second runner, and the two ends of the rotating column being rotationally connected to the interior of the tower body. The fan blades are driven to rotate by the second bevel gear, so that the fan blades can be driven to rotate without a motor and a cable, the problem that the traditional driving mode is prone to electric leakage in a humid environment is solved, and the operation safety is improved.

The application discloses a circulating water intelligent sulfuric acid adding device and a control method thereof, which comprises a sulfuric acid storage tank, a cooling tower pool, a circulating water supplement water pipeline, a circulating water drainage pipeline, an intelligent wind speed, temperature and humidity measuring instrument and a mechanical ventilation cooling tower; the outlet of the sulfuric acid storage tank is communicated with the cooling tower pool, the circulating water supplement water pipeline is communicated with the cooling tower pool, a cooling tower pool liquid level meter is arranged in the cooling tower pool, the bottom outlet of the cooling tower pool is communicated with the circulating water drainage pipeline, the cooling tower pool is located below the mechanical ventilation cooling tower, and the intelligent wind speed, temperature and humidity measuring instrument is arranged at the side of the mechanical ventilation cooling tower. The device and the control method thereof can effectively control the pH and alkalinity of the circulating cooling water in the set value range under the automatic operation state, keep the circulating cooling water quality stable, and ensure the stability of the cooling tower pool liquid level.

This invention provides a design method for interface openings in elevated waiting halls of railway stations based on natural ventilation. The method includes: extracting multiple spatial patterns of the elevated waiting hall; constructing a natural ventilation simulation model using computational fluid dynamics; calculating the effective area ratio of natural ventilation in the simulation model; sorting the calculated effective area ratios in descending order; and determining the optimal opening design scheme for the elevated waiting hall under two, three, or four opening type combinations based on the sorting results. This invention reveals a synergistic mechanism for natural ventilation in elevated waiting hall interface openings, ensuring that good natural ventilation effectively improves indoor air quality and enhances passenger thermal comfort while significantly reducing mechanical ventilation energy consumption.

A coupling part with integrated aerosol generator for use in a breathing circuit, comprising a housing (10) enclosing a cavity (V), having a first opening at a first end prepared for direct or indirect connection to a ventilator, a second opening at a second end, which is suitable for direct or indirect connection to a patient line or an endotracheal tube, wherein an aerosol generator (20) is integrated in one side of the housing and is suitable for delivering an aerosolised liquid, in particular a medicament.

The utility model discloses a water-saving fog-dispersal mechanical draft cooling tower which comprises a tower body, a hot water pipe and a cold water pipe are respectively arranged on the side face of the tower body, a plurality of spray heads are transversely arranged on the lower surface of one end of the hot water pipe at equal intervals, and cooling padding and a water collecting pool are respectively arranged on the inner side wall of the tower body. A connecting cylinder is arranged at an opening in the upper portion of the tower body, and a draught fan is arranged in the connecting cylinder. Through the hot water pipe, the spraying head and the cooling filler, hot water can be cooled conveniently, cooled liquid can be recycled conveniently through the cold water pipe, the cooled liquid can be reutilized conveniently through the water pump, the water inlet pipe and the water outlet pipe, and through the arrangement of the water collector and the water saving mechanism, the cooling efficiency is improved. The cooling tower is provided with the water collector and the water-saving mechanism, cooled liquid can conveniently enter the position between the water collector and the water-saving mechanism, heat dissipation is conducted on steam on the surface of the water-saving mechanism, final water saving and fog dissipation are conducted through the water collector, and therefore the cooling tower has the water-saving and fog dissipation effects.

The invention relates to an energy-saving ventilation technology, which can effectively reduce the discharge of indoor air and save energy. At present, mechanical ventilation is adopted for discharging civil and household kitchen oil fume and exhausting air in other places, negative pressure is generated, indoor air is utilized to discharge pollutants out of a room through a pipeline, and a large amount of indoor air is wasted in the mode. The core of the invention is that outdoor air is utilized to take away pollutants, a booster fan is utilized to press the outdoor air into the cavity of the exhaust hood and form guide airflow, the pollutants are mixed, guided and captured to the opening of the exhaust hood, and meanwhile, the outdoor airflow speed is increased by using the outdoor air sent by the booster fan according to a pipe shrinkage principle; negative pressure is formed at an exhaust hood opening to suck pollutants, high-speed jet airflow generated by pipe contraction is utilized to quickly take away the pollutants, and an exhaust fan is used for continuously discharging the pollutants outdoors. According to different use scenes, an exhaust fan can be not arranged, the exhaust hood can not be provided with a cavity or guide airflow, and the exhaust hood can be replaced by an exhaust outlet.

The present application belongs to the field of intelligent medical treatment, and particularly relates to a critical patient Pendelluft automatic detection method based on electrical impedance tomography and artificial intelligence. The method comprises: acquiring EIT data of a lung region of a patient within a monitoring period; segmenting the lung region into multiple regions, and extracting EIT data of the multiple regions to obtain EIT signals of the multiple regions; obtaining a tidal resistance characteristic based on the EIT signals, the tidal resistance characteristic comprising: a regional tidal resistance amplitude difference and an adjacent regional tidal resistance amplitude difference; calculating an EIT ventilation characteristic based on the tidal resistance characteristic, the EIT ventilation characteristic being a swing breath; and judging whether the patient has Pendelluft based on the EIT ventilation characteristic. Based on real-time acquired EIT time series data, through processing of the time series data, an index reflecting whether Pendelluft exists and its severity is extracted, and based on real-time monitoring of Pendelluft, the clinical management of a clinician on a mechanically ventilated patient is assisted.

The application provides a fan rotating type mixed ventilation cooling system and a use method. The system comprises a plurality of air guide walls arranged radially along a natural ventilation cooling tower. The air guide walls surround an air guide channel which is through at both ends. A cooling triangle is arranged at a port outside the natural ventilation cooling tower in the air guide channel. An angle adjuster is arranged at a port inside the natural ventilation cooling tower in the air guide channel. An axial flow fan is installed on the angle adjuster. The axial flow fan is electrically connected with a controller. The controller controls the opening and closing of the angle adjuster and the stop and start of the axial flow fan based on the temperature in the natural ventilation cooling tower. When the angle adjuster is opened, the axial flow fan stops working. The system realizes the switching between natural ventilation and mechanical ventilation and improves the cooling effect of the cooling tower.

The present application belongs to the technical field of mechanical ventilation cooling tower, and proposes a noise reduction structure, a cooling tower group and a method of the mechanical ventilation cooling tower group, wherein a flow guide plate is arranged between the noise reduction wall and the cooling tower group, and an arc-shaped wind guide is arranged at the edge of the cooling tower group; the height of the noise reduction wall is less than the height of the air inlet of the cooling tower group, and a plurality of air inlets are formed in the noise reduction wall, so that the wind passes through the upper part of the noise reduction wall and the air inlets and then reaches the tower group through the flow guide plate, thereby solving the problem that the noise reduction wall is too close to the cooling tower and the height of the noise reduction wall is too high, which greatly reduces the air inlet of the cooling tower; by optimizing the structure of the noise reduction wall, improving the air flow of the air inlet of the cooling tower and controlling the transverse vortex of the four cooling towers in the corners of the tower group, the noise reduction requirement is met, and the cooling effect of the cooling tower is not affected.

The application relates to the technical field of urban underground space ventilation and energy saving, and discloses a pipe gallery ventilation system based on passive thermal pressure and on-demand mechanical guarantee and a control method thereof, which comprises an air inlet system, an air exhaust system, a mechanical air exhaust device and an intelligent sensor network control system in communication with the comprehensive pipe gallery; the air duct of the air exhaust system comprises at least one vertically arranged middle-end glass air duct, the inner wall of the middle-end glass air duct is circumferentially provided with metal fins, the surface of the metal fins is covered with a solar heat absorption coating, and the metal fins are connected with the inner wall of the middle-end glass air duct through a thermal stress buffer structure. The application improves the natural ventilation driving force and heat collection and heat exchange efficiency, improves the flow field organization and ventilation uniformity in the pipe gallery, and reduces the mechanical ventilation energy consumption while ensuring the structural stability and operation safety.

The application relates to the field of mechanical ventilation, and discloses a heat-insulation high-temperature-resistant direct-connection box-type fan, which comprises a main box body, an impeller and a driving element, a partition plate is arranged in the main box body, the partition plate divides the main box body into a smoke exhaust box body and a driving box body; the impeller is arranged in the smoke exhaust box body, an air inlet and an air outlet are formed in the smoke exhaust box body, the smoke exhaust box body is composed of a first box plate and the partition plate, the first box plate and the partition plate are both double-layer structures and are filled with first heat-insulation elements; the driving element is arranged in the driving box body, a driving end of the driving element is connected with the impeller, the driving box body is composed of a second box plate and the partition plate, and the second box plate is a single-layer structure. The heat of the oil fume is blocked by the smoke exhaust box body filled with the first heat-insulation elements, so that the temperature in the driving box body is not too high, the driving element is not prone to faults, and the safety hidden danger of the high temperature of the main box body is reduced; the single-layer second box plate has high heat dissipation effect, and the heat generated by the driving element can be quickly dissipated.

The invention relates to the field of cooling towers, in particular to a dry-wet combined mechanical ventilation cooling tower in an unlimited dry-cold area, which comprises a mechanical ventilation cooling tower, and the mechanical ventilation cooling tower consists of a tower body, a dehydrator, a water distribution system, a filler, a heat exchanger group, an air duct and a fan; the dehydrator, the water distribution system and the filler are vertically arranged at the middle position in the tower body from top to bottom, the area where the dehydrator, the water distribution system and the filler are located forms a wet and cold area, the heat exchanger set is installed at the top of the tower body, and the air duct is installed at the top of the heat exchanger set. According to the invention, the problem of false fog dispersal caused by limited arrangement position of the dry and cold area when the conventional tower group is arranged in a single row or back-to-back mode is eliminated. Ambient air can penetrate through the dry and cold area formed by the heat exchanger set from any circumferential direction to enter the cooling tower, the mass flow of air penetrating through the dry and cold area to enter the cooling tower is increased, the temperature and moisture content of air away from the tower are reduced, the uniformity of air temperature and moisture content distribution on an outlet plane of the cooling tower is improved, and deep fog dissipation of the tower group is achieved.

The invention provides a preventive protection method suitable for a stone coffin chamber in an underground humid environment, and belongs to the field of cultural relic protection.The intelligent regulation and control of the coffin chamber environment are achieved by cooperatively executing the following steps that firstly, a humidity control step is executed, air humidity changes of the coffin chamber are modeled, and a water vapor mass conservation equation is established; describing the dynamic change process of the air humidity of the coffin chamber along with time; then a ventilation adjusting step is executed, natural ventilation and mechanical ventilation processes are simulated, an air flow model is constructed, and the ventilation quantity is adjusted according to the air flow model; meanwhile, through an ultraviolet sterilization step, the irradiation intensity and time of an ultraviolet lamp are controlled according to a microorganism killing kinetic model, and microorganisms carried by the entering personnel are physically sterilized; and through the automatic pumping and draining step, the underground water level is monitored by utilizing water level sensors arranged at multiple points, and the water pump is automatically controlled to pump and drain. Various factors such as underground water level and seasonal humidity change can be comprehensively responded, and timely and accurate adjustment of the environment in the coffin chamber is achieved.

The invention relates to a shipyard tall and large workshop all-area and all-time welding smoke low-carbon treatment method, and belongs to the field of low-carbon environmental protection. According to the method provided by the invention, combined treatment of the welding fume in the low area and the high area in the tall and large workshop of the shipyard is considered, control strategy analysis is carried out on the removal effect of the welding fume by natural ventilation in combination with indoor and outdoor environment parameters and welding fume characteristics, and natural ventilation and mechanical ventilation are linked to treat the welding fume in the high area; on the basis of guaranteeing the welding fume removal effect, free natural ventilation can be fully utilized, and therefore energy consumption and carbon emission of mechanical ventilation are reduced.

The invention discloses an energy-saving control system for a mechanical ventilation dry type cooling tower, which belongs to the field of energy-saving control and comprises a sensing module, an edge computing gateway, a frequency converter and a cooling fan. The sensing module continuously collects and outputs cooling tower heat exchange state multi-source operation parameters including environment temperature, water return temperature, water supply temperature and circulating water flow data to the edge computing gateway in real time; based on an embedded adaptive learning model, the edge computing gateway performs combined operation including the cooling temperature difference sum on the multi-source operation parameters according to the input parameters and historical optimization experience, and generates a cooling fan operation frequency instruction corresponding to the current working condition; the frequency converter performs driving adjustment on the cooling fan according to the operation frequency instruction, and a water supply temperature sensor in the sensing module feeds back the adjusted water supply temperature to the edge computing gateway; the cooling tower has the beneficial effects that the water supply temperature of the cooling tower is accurately adjusted, energy is saved, and the abnormal self-protection function is achieved.

1. The name of the design product: mechanical deck. 2. The use of the design product: the design product is used for indoor or outdoor ground, combined with ground backfill pouring, providing warm mechanical ventilation, pipeline, and overhead module for line arrangement. 3. The design points of the design product: the shape of the product. 4. The picture or photo that best indicates the design points: perspective view 2.

A method is for continuous and noninvasive estimation of mixed venous blood saturation [SvO2] in a mechanically ventilated subject. The method includes the steps of measuring an expiratory carbon dioxide [CO2] content in expiration gas exhaled by the subject, measuring an expiratory flow or volume of expiration gas exhaled by the subject, estimating a cardiac output [CO] or an effective pulmonary blood flow [EPBF] of the subject from the measured expiratory CO2 content and the measured expiratory flow or volume using a capnodynamic Fick method, and estimating SvO2 based on the estimated CO or the EPBF of the subject.

The utility model relates to the technical field of granary drying, and discloses a novel drying granary system which comprises a granary body, a plurality of natural ventilation openings are formed in the top of the granary body, a plurality of mechanical ventilation openings are formed in the top of the granary body, and the bottom of the granary body is fixedly connected with a supporting assembly for supporting a granary body structure. A ventilation fan is installed at the bottom of the bin body, an electric heat exchanger is installed at the top of the ventilation fan, the outer portion of the bin body is fixedly connected with a fixing assembly used for fixing the position during feeding, and the bottom of the bin body is fixedly connected with a discharging assembly used for controlling material distribution. The automatic drying device is simple in structure, is mainly formed by reusing system components of an original bin, is efficient and energy-saving, and can automatically run until drying is completed because materials are in countercurrent contact with air, required energy is small, operation is easy and convenient, and excessive manual intervention is not needed once the materials enter the drying process.