110results about How to "Improve air quality" patented technology

The utility model relates to the technical field of automobile door panel processing, and discloses a welding tool for assembling an automobile door panel, which comprises a machine body, a fixed adjusting component and a protective component are arranged above the machine body, the fixed adjusting component comprises a rectangular frame, and a door panel body is placed on the upper surface of the rectangular frame. According to the welding tool for assembling the automobile door panel, through combination of an air cylinder and a rubber pad, stable clamping of a door panel body is achieved, the rubber pad protects the surface of the door panel from being damaged, the adaptability of equipment to door panels of different sizes is enhanced through a limiting rod and a swing piece, the height of a rectangular frame is adjusted through a traction rope, and the door panel is accurately positioned; the welding assembly supports double-face welding, the efficiency is greatly improved, a protective curtain and a collecting frame are matched with a breathable grid plate, welding smoke is effectively extracted and filtered, the air quality is improved, the health of operators is guaranteed, residues are conveniently collected and discharged through the design of a scraper, impurity retention is avoided, the welding process is optimized through the overall structure, and the production efficiency, the environmental protection property and the safety are improved.

The utility model discloses a garbage incinerator front material pushing platform with a deodorization function, which relates to the technical field of spray deodorization, and comprises a liquid storage tank, the liquid storage tank is connected with a liquid inlet end of a liquid supply pump fixed on a base in a matching way through a connecting pipe, and the liquid storage tank is connected with the liquid inlet end of the liquid supply pump through a connecting pipe. Wherein the connecting pipe is further connected with a butterfly valve in series; the liquid outlet end of the liquid supply pump is connected with a liquid supply pipe, and the tail end of the liquid supply pipe is at least connected with one atomizing nozzle; according to the utility model, after liquid medicine in the liquid storage tank is used up, the make-up pump is started, an external water source enters the water inlet pipe and is pumped into the liquid storage tank, the medicine is added according to the proportion of water quantity and medicine quantity, and after the metering pump is started, the metering pump pumps out the medicine in the medicine tank through the medicine inlet pipe and conveys the medicine into the liquid storage tank through the medicine make-up pipe. Therefore, the addition of the medicament is realized; in this way, manual proportioning is omitted, and the requirement for spraying deodorization on the garbage incinerator pushing platform is met.

The utility model belongs to the technical field of roadway dust removal, and relates to an air flow purification device of a fully-mechanized face air return crossheading, which comprises a frame type component, a lifting component, a lower rotating component, an upper rotating component and a spraying component, the frame type component is used for allowing an operation vehicle to pass through, and the lifting components are arranged on the two sides of the frame type component and used for achieving lifting of an upper structure in the frame type component; a spraying component is arranged in the middle of the upper structure of the frame type component and used for treating dust in an area where a vehicle passes through. The rotating lower part is hinged with one side of the lower structure of the frame type part, and the spraying part is arranged at the upper part of the rotating lower part; the rotating upper part is hinged to the side, close to the rotating lower part, of the upper structure in the frame type part, and a dust catching net is arranged between the rotating upper part and the frame type part. Sufficient passing space is provided for vehicles, obstruction of a traditional dust catching net to traffic is avoided, different roadway heights and environment conditions can be flexibly adapted, and the stability of the treatment effect is ensured.

This utility model relates to the field of medical engineering, and more particularly to a temperature and humidity control device for medical cleanrooms. This utility model provides a device that can regulate the temperature and humidity of a medical cleanroom while simultaneously performing secondary filtration of incoming air, reducing costs, improving air quality, enhancing work comfort and efficiency, reducing cross-infection, and is easy to use. The device includes a support frame, with two supports, left and right. This utility model utilizes a fan for ventilation, a hot / cold medium entering a connecting frame to regulate temperature, and air filtration through a filter or by rotating a plate to reset, allowing air to condense in a condenser or be humidified by a humidifier. This allows for simultaneous regulation of temperature and humidity in the medical cleanroom and secondary filtration of incoming air, reducing costs, improving air quality, enhancing work comfort and efficiency, reducing cross-infection, and providing ease of use.

The utility model relates to the technical field of feed processing, and discloses a quantitative feeding mechanism for feed processing, which comprises a support. The feeding bin is fixedly connected to the top of the support, and the hopper is fixedly connected to the top of the feeding bin; the motor I is arranged on the right side of the outer part of the feeding bin; the first rotating rod is fixedly connected to the output end of the first motor, the first rotating rod is rotationally connected to the interior of the feeding bin, and the second rotating rod is rotationally connected to the interior of the hopper; the first gear and the second gear are meshed with each other, and the first gear is fixedly connected to the left side of the outer portion of the first rotating rod. According to the feeding device, in the feed processing process, quantitative feeding of raw materials is facilitated, manual operation of operators is not needed, the situation of excessive feeding or small feeding is avoided, and therefore the quality of feed is improved.

The utility model relates to the technical field of vibration knife, and disclose a kind of servo high-torsional vibration knife cutting equipment, including pedestal, further include: install the adsorption device frame in pedestal top, the outer wall opposite side of two described adsorption device frame is fixedly connected with blast nozzle, the inside of two described adsorption device frame is equipped with air blower, by air blower cooperation blast nozzle, can effectively adsorb the dust generated by cutting, filter plate can preliminarily filter large particle waste dust to dust collecting groove, simultaneously, brush can clean dust on filter plate under the driving of screw rod, connecting piece etc., dust is collected by dust collecting groove, it is convenient to clean, guarantee the clean air around equipment, reduce the harm of dust to operator health, filter cartridge and fan in air outlet box, further purify air, discharge clean airflow, maintain good air quality in working environment, on cutting function, pneumatic cylinder can accurately control the down pressure degree of tool bit.

The invention relates to a sludge incineration treatment system, and belongs to the field of sludge treatment. Comprising a sludge feeding system, an incineration system, an ash delivery system and an ash circulation system. By means of the double-sleeve type ash feeding pipeline, the air feeding quality can be improved, the problem that the rear section of a traditional air feeding system is small in pressure and prone to blockage is solved, high-pressure blowing is matched, and the stability of a sludge feeding system is guaranteed. A wear-resistant protective sleeve is additionally arranged at the elbow of the ash conveying pipeline, so that normal operation of equipment is ensured. The sleeve type high-temperature protection pipe is additionally designed, so that the problem of pipeline breakage caused by thermal expansion is completely eradicated; through the design structure of the valve, the flashboard is prevented from being clamped due to the fact that ash residues are accumulated in the supporting plate or gaps. By designing a cooling water line of the cooler, the steam heat efficiency of the circulating fluidized bed boiler is ensured. And an ash circulating system is additionally arranged, carbon particles which are not completely combusted in ash are fed into the hearth again, and the fuel utilization rate is increased.

The utility model relates to a tunnel ventilation equipment technical field, concretely is an intelligent tunnel ventilation control system based on stepless speed regulation technology. Include: wind speed sensor for real -time monitoring the wind speed in the tunnel, main control unit for receiving the data of wind speed sensor, calculates the fan speed regulation amount, and generates control instruction, stepless speed regulation drive module is connected with main control unit, realizes the smooth stepless regulation of fan blade rotating speed through the adjustment fan input voltage or frequency, feedback module is used for real -time monitoring the actual rotating speed and operating condition of fan, and the data is fed back to main control unit, forms closed -loop control, communication module, communication module connects feedback module, is used for realizing remote control and data interaction, storage module is used for storing wind speed, rotating speed and control instruction historical data, user interface is used for providing operation interface, and the user sets target wind speed through touch -sensitive screen or remote control equipment.

The application discloses an air treatment device, which comprises a base, an air purification device and a first driving module and an ultrasonic module. The air purification device is rotatably arranged on the base, and an air suction port is formed on the air purification device. The first driving module is in power connection with the air purification device and is adapted to drive the air purification device to rotate relative to the base. The ultrasonic module is arranged on the air purification device and is used for detecting the position of a user when the air purification device rotates, so that at least part of the air suction port is directed towards the user. Thus, on the one hand, the position of the air suction port can be automatically adjusted without the participation of the user, improving the convenience of use. On the other hand, the air in the position of the user can be preferentially treated, so that the air quality in the position of the user can be improved faster, thereby improving the use experience, and the air treatment effect of the air treatment device is better and the air treatment efficiency is higher.

This invention relates to the field of organic waste gas recovery and resource utilization technology, and particularly to a low-volume methane / VOCs co-recovery system, method, and application in oil and gas development processes. The system includes a waste gas generating device, a waste gas collecting device, a waste gas conveying device, and an adsorption storage device connected in sequence. The adsorption storage device is filled with layered adsorption materials, which include a layered adsorption layer of heavy components, a layer of intermediate components, a layer of light components, and a protective bed, stacked sequentially. This invention, based on the adsorption storage concept and utilizing the inherent potential energy of the oil and gas development process, achieves efficient recovery of methane / VOCs from intermittent emission sources, reducing greenhouse gas methane and VOCs emissions and improving oil and gas product yields.

The utility model provides a kind of for belt conveyor single dust removal point full-closed dust collector, it is related to air purification equipment field, including the dust removal unit of installation in belt conveyor conveying starting point and conveying terminal point, dust removal unit has backflush system;It further includes louvre valve that is combined with dust removal unit to make the internal space of dust removal unit closed or exposed, louvre valve is opposite belt conveyor, for backflush system work, through louvre valve, the internal space of dust removal unit is exposed, so that dust falling on the surface of louvre valve falls into belt conveyor.

The invention discloses a VOCs emission reduction potential prediction method based on a terminal control level, and the method comprises the steps: calculating the annual emission amount of VOCs according to the VOCs emission concentration of an enterprise in combination with the parameters of an exhaust funnel and the operation time of equipment; establishing an emission factor library based on the VOCs components; calculating the processing efficiency according to a concentration quantitative analysis result, and evaluating the VOCs removal efficiency of different technologies; according to the VOCs removal level of the prior art of the enterprise and the reachable treatment efficiency of the treatment technical guide recommendation technology, different emission reduction scenes are set, and the VOCs emission reduction potentials of different enterprises are evaluated; and based on the emission factor library, checking the VOCs emission amount of the industry, setting an emission reduction scene in combination with a technical guide, and evaluating the emission reduction potential of the industry under the applicable technology. According to the method, the VOCs emission reduction potential of different industries and enterprises is evaluated on the basis of the quantitative requirement of VOCs emission reduction of the industrial enterprises and the reality of technical feasibility, data support is provided for tail-end treatment and control of VOCs emission reduction of the industrial enterprises, and the target requirement for continuously improving the environmental air quality is met.

This invention relates to a plant preservation refrigerator with internal ventilation function. An embodiment of the plant preservation refrigerator with internal ventilation function of this invention may include: an outer shell; an inner shell disposed inside the outer shell; shelves disposed inside the inner shell for selectively placing plants to be preserved; a mounting housing disposed inside the inner shell and positioned behind the shelves; and a ventilation unit disposed in the mounting housing and for ventilating the interior of the inner shell.

The utility model relates to a ventilation equipment field provides a kind of air duct assembly, air conditioning system and vehicle.Wind channel component includes air supply device, air supply device includes wind box, and wind box is opened with air inlet and air outlet, air inlet is provided with filter piece, and the position corresponding with air inlet in wind box is provided with air guide piece;Distribution box, fluid communication is in air outlet, and distribution box is provided with valve group, and distribution box includes first air duct, second air duct and third air duct, first air duct is fluid communication with the driver's room of vehicle, second air duct is fluid communication with the traction motor cabin of vehicle, third air duct is fluid communication with the passenger room of vehicle, and valve group is used to distribute the air intake of first air duct, second air duct and third air duct.The air duct assembly can make the airflow output of each air duct stable, avoid the air supply fluctuation caused by external wind pressure variation, ensure the comfort of driver's room, passenger room and the heat dissipation effect of traction motor cabin, improve the reliability of vehicle operation, simplify the structure of air duct assembly.

This utility model relates to the field of belt conveyor technology, and more particularly to a belt conveyor with a cleaning function. It includes a support frame, a control box, a motor, rollers, and a conveyor belt. The control box and motor are fixedly connected to the front of the support frame, and the motor is electrically connected to the control box. The motor is located on the left side of the control box. Rollers are rotatably connected to both sides of the top of the support frame. The output shaft of the motor passes through the interior of the support frame and is fixedly connected to one of the rollers. The conveyor belt winds between the two rollers. This utility model, through the setting of a mechanical linkage cleaning mechanism composed of a dial, lever, abutment block, and torsion spring, utilizes the power of the main drive roller of the conveyor belt to automatically drive the cleaning brush to perform high-frequency reciprocating oscillation, achieving simultaneous cleaning of the belt working surface during conveying. This effectively removes adhering dust and particulate matter, replaces manual cleaning, ensures the cleanliness of the conveyed products, and improves production efficiency.

The application provides a fragrance spraying device for sanitary products, which comprises a fragrance storage tank, a control module, a motion module and a sensing module; the output end of the control module is connected with the input end of the motion module, and the output end of the sensing module is connected with the input end of the control module; the control module inputs digital signals through the sensing module, and adjusts the motion of the motion module according to the digital signals; the liquid level sensor and the gravity sensor are used to monitor the spraying volume of the fragrance and the total mass of the fragrance absorbed by the sanitary products in real time, so that the fragrance can be uniformly sprayed on the surface of the sanitary products; during the production process, the operation state of the servo motor, the lifting system and the track driving system can be automatically adjusted according to the monitoring results, so that the production efficiency is improved; in addition, the technical scheme can effectively reduce the generation of defective products caused by uneven fragrance spraying.

The application relates to the technical field of in-situ heat regeneration and road maintenance, in particular to a mixing device and a mixer for in-situ heat regeneration asphalt mixture. The mixing device for in-situ heat regeneration asphalt mixture comprises a mixer body and a waste gas treatment system. The waste gas treatment system comprises a waste gas collecting section, an extendable adjusting section and a fixed connecting section which are sequentially communicated. When the second hose is unwound or wound on the rotating disc mechanism, the third hose automatically performs the compensation movement of extending or retracting correspondingly, so that the continuity and sealing property of the first hose, the second hose and the third hose are maintained. Through the integrated waste gas treatment system, the effect that the toxic volatile matters of asphalt generated in the mixing process are collected and treated in time is achieved, and the safety hidden danger that the operating personnel are forced to inhale the harmful gas in the prior art is effectively solved.

The utility model provides a kind of integrated compartment house's advertisement and ventilation guide board belongs to advertising field, including mounting plate, the side of mounting plate is provided with folding support assembly, the side of folding support assembly is provided with ventilation component;The folding support assembly includes the first plate hinged to the side of mounting plate, the first plate one end is hinged with second plate, and the second plate one end is hinged with mounting bracket, the utility model will guide board be converted into integrated air treatment terminal, the directional introduction of external air is realized by external fresh air source, and efficient purification is completed in equipment inside, finally clean airflow is accurately released to guide board peripheral area, this design directly aims at the problem of hypoxia, stuffy of people flow dense closed space such as integrated compartment house, while providing guide service, actively improve local micro-environment air quality, significantly improve visitor's comfort.

The utility model discloses a van type garbage house air purification filter component belongs to air purification device technical field. This kind of van type garbage house air purification filter component, including garbage house and dustbin, the inside of garbage house places dustbin, the garbage house is installed with sterilization box on the side away from dustbin, the top of sterilization box is installed with suction pump, the input of suction pump is connected with air inlet pipeline, one end of air inlet pipeline is connected with one side of dustbin, the output of suction pump is connected with air outlet pipeline, one end of air outlet pipeline extends to the inside of sterilization box, the inside of box body is filled with sterilization liquid, one end of air outlet pipeline is immersed in the inside of sterilization liquid, the top of box body one side is equipped with square mouth, the inside of square mouth is connected with exhaust component.

This invention relates to the field of air-jet loom accessories, and in particular to a kinetic energy and temperature recovery device for air-jet looms. The device includes an air-jet loom body, a lateral air collection hood bolted to the outer wall of the loom body at the air outlet position, and a lateral air collection disc fixedly mounted at the air outlet position on the outer side of the lateral air collection hood. A power recovery impeller is movably mounted inside the lateral air collection disc. This invention's kinetic energy and temperature recovery device for air-jet looms uses the lateral air collection hood to rapidly guide the blown high-pressure air into the lateral air collection disc, thereby driving the power recovery impeller used to control the bottom-mounted generator. This significantly improves the kinetic energy recovery efficiency of the high-pressure air, making it more energy-efficient and environmentally friendly. A lateral heat recovery device is installed outside the lateral air collection disc to filter dust from the air, improving the air quality around the equipment and enhancing the working environment and respiratory health of operators.

The application discloses a workshop dust removal equipment for garment processing, and belongs to the technical field of garment processing, which comprises a base, a dust removal cavity, an air chamber and a water storage cavity are respectively arranged in the base, a fan is arranged at the connecting position of the dust removal cavity and the air chamber, and a plurality of wind baffles with an inclination of 45 degrees are arranged on the side surface of the base and correspond to the position of the air chamber; a dust suction structure comprises an air suction assembly, a pretreatment assembly, a dust removal assembly, a collection assembly and a cleaning assembly; a fixing frame is fixedly connected to the top of the air suction assembly, and a dust falling assembly is arranged on the side surface of the fixing frame. The dust removal equipment for garment processing is provided, the pretreatment assembly and the dust removal assembly are arranged, the large-particle sundries and fine dust are subjected to graded treatment, the fine dust is prevented from penetrating through the filter layer to cause secondary flying, the thoroughness and stability of air purification are improved, and the efficient dust falling module is integrated, fine dust suspended in the workshop for a long time is subjected to rapid physical settlement, and dust removal and dust falling integration is realized.

The utility model discloses a working cabin air purification device which comprises a heating structure, a medicine mixing structure arranged at the top of the heating structure, a medicine feeding tank body detachably connected to the bottom end of the medicine mixing structure, a heat conduction plate arranged at the bottom of the medicine feeding tank body, and a heat exchange plate arranged at the bottom of the heat conduction plate. The top of the medicine feeding tank body is detachably connected with a cover body, the heating structure comprises a supporting disc, a heating plate is arranged at the top of the supporting disc, a heating rod is arranged in the center of the top of the heating plate, and a groove hole corresponding to the heating plate is formed in the bottom of a heat conduction plate. According to the air purification device, modular design, intelligent control and a multi-layer purification mechanism are adopted, air can be efficiently and conveniently purified in an energy-saving mode, the air purification device is particularly suitable for a special working cabin environment needing highly-cleaned air, and the overall structure is simple and practical.

The utility model discloses a metal forging piece feeding device, including the feeding box, the side of being close to the feeding box is provided with the mounting bracket, the top end one side fixed mounting of feeding box has the transmission frame, the outer periphery one side fixed connection of feeding box has dust collection box, the upper end both sides periphery of feeding box all fixed mounting has the dust collection port, the inside lower extreme fixed mounting of dust collection box has the dust collector, the side of being close to dust collector is provided with the ventilation board, the central end sliding connection of dust collection box has the filter screen, the upper end fixed communication of dust collection box has the conveying pipe, and the output of conveying pipe is communicated with two ventilation board respectively Setting, the metal forging piece feeding device of utility model, through setting dust collection port in the top of feeding box, connecting dust collection box and dust collector, cooperation slidable filter screen of dismounting, effectively collect metal dust, improve workshop air quality, guarantee the health of operating personnel.

The utility model discloses an indoor environment monitoring device convenient to carry, which belongs to the technical field of indoor environment and comprises a bearing seat, and universal wheels are mounted on the lower side of the bearing seat. A first supporting frame is mounted on the upper side of the bearing seat, and a height adjusting part is mounted at the top of the first supporting frame; an air monitor is mounted on the height adjusting part; when the indoor environment is monitored, universal wheels are used for pushing the device to a detection area, a height adjusting part is used for lifting the air monitor to the needed height for air quality detection, meanwhile, the air improving assembly is unfolded, indoor air and external air are promoted to be mixed and diluted, and the indoor environment is monitored. The indoor pollutant concentration is reduced, and the air quality is improved.

The utility model discloses a dust removal device for ventilation equipment, which comprises a ventilation pipe, the top end of the ventilation pipe is fixedly communicated with a dust removal cover, the top end of the dust removal cover is fixedly communicated with a filter cover, the inner wall of the filter cover is fixedly provided with an activated carbon adsorption plate, and the inner wall of the dust removal cover is fixedly provided with a filter plate. A through hole is formed in the bottom face of the filter plate, a plurality of fixing plates are fixedly connected to the inner wall of the dust removal cover, the side faces, close to each other, of the fixing plates are jointly and fixedly connected with a driving motor, a driving shaft is fixedly installed at the output end of the driving motor, and a plurality of cleaning brush plates are fixedly connected to the outer surface of the driving shaft; the upper surface of each cleaning brush plate makes contact with the bottom face of the filter plate, and the bottom end of the ventilation pipe fixedly communicates with an ash removal pipe. According to the dust removal device for the ventilation equipment, the self-cleaning effect on the dust removal equipment is achieved, frequent manual disassembly and cleaning are not needed, and the maintenance cost and the labor intensity are reduced.

The utility model discloses an electrical automation dust removal device which comprises a base, supporting frames are connected to the top of the base, first moving assemblies are installed between the supporting frames, an installation plate is connected between the first moving assemblies, scanning equipment is installed on the installation plate, second moving assemblies are installed on the supporting frames, and the scanning equipment is connected with the second moving assemblies. And a cleaning structure for removing dust from the electrical equipment is arranged between the second moving assemblies and is connected to the filtering structure. According to the electrical automatic dust removal device, when the cleaning structure cleans the interior of electrical equipment, raised dust can be absorbed, filtered and collected by the filtering structure, so that floating and diffusion of the dust in a working environment are effectively avoided, the air quality of the working environment is greatly improved, and potential hazards to the health of workers are reduced; and meanwhile, the pollution risk of dust to other equipment is also reduced.

The utility model discloses an automobile air conditioner air outlet structure relates to the technical field of automobile parts, including the air pipe, and the air outlet grid of air pipe air outlet end installation, air pipe air outlet end is equipped with the magnetic attraction connecting piece for the detachable air outlet grid, the support is installed in the air pipe, the support inner plug has the activated carbon honeycomb board for adsorbing air peculiar smell and the non -woven filter board for filtering air, and the non -woven filter board sets up in activated carbon honeycomb board's air outlet end, the groove on activated carbon honeycomb board installs the liquid storage bottle for storing air air fragrance liquid, the air duct adjusting part of rotatable is arranged in the air pipe, the air outlet grid is connected with the air pipe air outlet end through the magnetic attraction connecting piece, realizes quick dismounting with the magnetic attraction principle, compared with traditional buckle or screw fixed mode, it is more simple and convenient to operate, and the cleaning and maintenance efficiency of air outlet grid has been improved greatly, and the use cost of user has been reduced.

The application discloses a cigarette smoke purifying device with a humidifying function, and relates to the technical field of purification. The cigarette smoke purifying device with the humidifying function comprises a smoke purifying shell, a purifying component, an ash collecting component and at least one atomizing component. A first groove and at least one second groove are arranged on the top of the smoke purifying shell. The ash collecting component is arranged in the first groove, the atomizing component is arranged in the second groove, and the purifying component is arranged inside the smoke purifying shell. An air inlet and an air outlet are arranged on the smoke purifying shell. The air inlet is arranged on the side wall of the first groove, and the air outlet is arranged at the bottom of the smoke purifying shell. Through the above design, the diffusion of smoke and ash can be avoided, and the air quality in a room can be improved.

This application belongs to the field of shipbuilding, specifically disclosing a methanol-fueled single-fuel bulk carrier, which includes a hull and a main deck mounted on the hull. A propeller and a propulsion motor are fixedly installed at the stern of the hull, and the propulsion motor and propeller are connected in a drive connection. A methanol fuel generator electrically connected to the propulsion motor is installed in the engine room at the stern of the hull. A methanol fuel tank for supplying fuel to the methanol fuel generator is located at the stern of the main deck. The methanol fuel tank is a C-type tank, and a fuel tank connector is provided on one end of the methanol fuel tank to connect with it and form an integral part thereof. Through the structural design of this application, zero sulfur emissions and low nitrogen oxide emissions of the ship are achieved, which can meet the environmental protection requirements of green development of inland waterway shipping. At the same time, the height of the ship above the waterline is effectively controlled, which can adapt to complex navigation conditions such as bridge height restrictions, water depth during the dry season, and lock size restrictions in the Huaihe River Basin, significantly improving the ship's throughput capacity and operational economy.

The utility model provides a box-type house with good sound insulation and heat preservation effects, which comprises a wall plate, a photovoltaic power generation plate is arranged on the top of the wall plate, a square ventilation groove and a plurality of L-shaped ventilation channels are arranged on two sides of the wall plate, one side of the ventilation groove is communicated with the ventilation channels, and filter elements are fixedly connected in the ventilation channels. Ventilation fans are fixedly connected to the connecting positions of the ventilation groove and the multiple ventilation channels, the other side of the ventilation groove is fixedly connected with an outer side plugging assembly, one side of each ventilation channel is rotationally connected with an inner side plugging assembly, the outer side plugging assembly comprises a plugging plug, a sliding rod, an electric screw and a screw nut, and the motor end of the electric screw is installed on the inner side of the ventilation groove. Ventilation control is achieved through the remotely-controlled outer side plugging assembly and the manually-controlled inner side plugging assembly, when not in use, the plugging assemblies can be completely closed, air leakage is effectively prevented, the sound insulation and heat preservation effects of the box-type room are guaranteed, meanwhile, the ventilating fan is designed to be mute, and working noise is reduced.