236 results about "HEPA" patented technology

The invention provides a plasma-based air filtering device, and relates to the technical field of gas purification devices, the plasma-based air filtering device comprises a multi-stage filtering layer shell, and a catalytic filtering layer, an activated carbon particle filtering layer, an HEPA filtering layer and a flexible plasma filtering layer are independently and detachably mounted on the multi-stage filtering layer shell to form a multi-collaborative filtering system; harmful substances adsorbed in the activated carbon particles are decomposed and eluted through plasmas generated by the flexible plasma filtering layer, so that the activated carbon particles are recycled. According to the air purification device, harmful substances in gas are effectively adsorbed and filtered, activated carbon particles in the activated carbon particle filtering layer can be eluted and purified, the activated carbon particles can be recycled for multiple times, and therefore the air purification cost is reduced, and in addition, compared with a common illumination elution mode in life, the elution mode has the advantage that the purification efficiency is improved. The elution effect is better.

A centrifugal separator system separates particulate matter from an air stream produced by an industrial shredding machine. The system includes a housing having a cylindrical conical shape defining an interior chamber. An inlet positioned tangentially near the top of the housing introduces an air and particle mixture to create a vortex flow that centrifugally displaces heavier particles where they slide downward to discharge aperture. Clean air reverses direction and exits upward through a central top outlet connected to a HEPA filter for removing residual dust. A first silo directs is used to decelerate separated particles which are directed through a rotary valve providing an airlock to maintain pressures for optimizing centrifugal separation of particles. A second silo receives a bag holder for ease of securing a collection bag. The system provides efficient separation of particles with minimal maintenance and allows continuous operation.

The invention discloses a negative pressure collection and explosion-proof safety treatment system for metal dust in an electromagnet manufacturing process, which comprises a dust negative pressure collection unit, a ferromagnetic dust separation unit, a multi-stage filtration explosion-proof unit, a dust recovery unit and an intelligent control unit which are sequentially connected through corrosion-resistant metal pipelines, the dust negative-pressure collecting unit comprises a customized air suction cover, an embedded ground air suction opening and a movable negative-pressure dust suction gun; the ferromagnetic dust separation unit comprises an electromagnetic separation barrel, and a spiral flow guide channel is arranged in the barrel and is matched with a compressed air back flushing device; the multi-stage filtering explosion-proof unit comprises a first-stage cyclone separator and a second-stage HEPA efficient filter, an explosion-proof and explosion-proof layer is arranged on the outer side of the multi-stage filtering explosion-proof unit, and the multi-stage filtering explosion-proof unit is provided with a spark The intelligent control unit adopts a PLC control system, is connected with a dust concentration sensor, a temperature sensor and a pressure sensor, and supports remote monitoring and fault diagnosis. By means of the system, zero explosion risk, low emission and resource recycling of electromagnet manufacturing process dust are achieved.

The utility model discloses an air purifier adopting a plasma sterilization mechanism, and relates to the technical field of air purifiers, the air purifier comprises a main machine body and a filtering assembly, the bottom of the main machine body is provided with supporting column feet, and the filtering assembly is arranged on the front side in the main machine body; the filter assembly comprises a mounting frame, bearing grooves, spring damping rods, limiting balls, a primary filter screen, limiting through grooves, an activated carbon filter screen and an HEPA filter screen, the bearing grooves are formed in the two sides of the interior of the mounting frame, the spring damping rods are mounted in the bearing grooves, the limiting balls are mounted at the front ends of the spring damping rods, the primary filter screen is connected into the mounting frame, and the activated carbon filter screen is connected with the limiting through grooves. Limiting through grooves are formed in the two sides of the interior of the primary filter screen, and an activated carbon filter screen is arranged at the rear end of the primary filter screen. According to the air purifier adopting the plasma sterilization mechanism, a filter screen arranged in the air purifier can be quickly disassembled and assembled, so that time and labor are saved during cleaning of the filter screen, and the overall practicability and the use efficiency of the air purifier are improved.

The utility model discloses an explosion-proof electric heater with a scale inhibition structure, which relates to the field of explosion-proof electric heater devices, and comprises a tank body, a water inlet is arranged on the upper surface of the tank body, an outer filter shell is arranged in the water inlet, the outer filter shell is of a multi-section hollow design, an HEPA filter screen is arranged on the outer surface of the outer filter shell, and a scale inhibition structure is arranged on the outer surface of the HEPA filter screen. A butt joint ring is installed at the upper end of the outer filter shell, a circular ring clamping plate is installed at the upper end of the butt joint ring and located on the upper surface of the water outlet, a sealing plate is spirally installed at the lower end of the outer filter shell, a spring is installed on the sealing plate, the height of the spring is flush with that of the butt joint ring, and a movable block is installed at the upper end of the spring. A first sealing piece is installed in the butt joint ring. The movable block, the inner filter shell and the outer filter shell are arranged, the filter assembly can be self-cleaned through water pressure, meanwhile, water is purified from the source, the scale inhibiting effect of the device is improved, and the service life of the device is prolonged.

The invention discloses an energy-saving environment control system for cultivating low-carbon-dioxide valuable and rare bacteria, and relates to the technical field of fungus cultivation equipment. A multi-gear frequency conversion fan is arranged in a power cabin, an HEPA filter screen and an activated carbon layer are sequentially arranged in a filter cabin, a spiral water-cooling coil pipe and a wet curtain device are arranged in a cooling cabin, an ultraviolet lamp and a photocatalyst coating are arranged in a disinfection cabin, and a fin type heat exchanger and a phase change energy storage module are arranged in a heat recovery cabin; the dynamic ventilation pipeline comprises a main air duct which is telescopic and heat-insulating, an electric air valve array is arranged at the tail end of the dynamic ventilation pipeline, a bypass mechanism is provided with a bypass pipeline and a switching valve, and air ports are formed in the tail ends of a plurality of branches; the monitoring and control unit comprises a PLC (Programmable Logic Controller) and is electrically connected with a temperature and humidity sensor, a CO / O concentration sensor, a wind speed sensor, an air quality sensor, a built-in timer and a logical operation module; precise control over the cultivation environment of the rare bacteria and efficient utilization of heat energy are achieved.

The utility model relates to an air interchanger. The ventilation device comprises an air inlet device, a filter box, a wall fixing plate, a one-way valve, a power supply device and a control device, the air inlet device adopts one-way air inlet, and external air can enter through the air inlet device; the filter box is used for filtering air and connected with the air inlet device through an air inlet pipe, an ozone disinfection unit, an oil screen dust filter unit, an HEPA unit and an activated carbon unit are arranged in the filter box, and an air outlet is further formed in the filter box and used for discharging filtered air; the wall fixing plate is used for fixing an air outlet pipe, the other end of the air outlet pipe is connected with an air outlet of the filter box, and a fan is arranged at the air outlet or a pipe orifice of the air outlet pipe or on the filter box at the upper end of the filter unit; the one-way valve is independently arranged and used for balancing the air pressure in the space, and when the air pressure is too large, air is exhausted outwards. The power supply device is used for supplying power to the whole device; the control device is used for controlling the whole device to operate.

The utility model discloses a textile spinning roller cotton opening device in the field of textile spinning, including the installation frame, the inside of installation frame is provided with the cotton opening roller, and the lower extreme fixed mounting of installation frame has the support frame, and the lower extreme fixed mounting of support frame has the drive motor, and the transmission end fixed mounting of drive motor has the drive pulley, and the outside of drive pulley is provided with the drive belt, and the transmission pulley of setting and being fixed in the front end of cotton opening roller is provided above drive belt, and the right side of cotton opening roller is provided with the air extraction mechanism, and the right side of air extraction mechanism is provided with detachable barrier mechanism, and the right end fixed mounting of installation frame has the sheltering storehouse, and the lower extreme fixed mounting of sheltering storehouse has the air inlet storehouse door, and this textile spinning roller cotton opening device cooperates through air extraction mechanism and detachable barrier mechanism, and in the device, the inside waste cotton recovery box and HEPA filter screen are connected in series through dust extraction pipeline, and form a complete structure unit from sheltering storehouse to air extraction pump and through detachable barrier component.

The utility model relates to the technical field of air purification equipment, and discloses a fresh air dehumidifier filtering device which comprises a main body structure and an adjusting structure, the top of the main body structure is provided with the adjusting structure, the main body structure comprises a dehumidifier main body, a filtering chamber is formed in the dehumidifier main body, and the dehumidifier main body is provided with an air inlet. A limiting sliding groove is formed in the inner wall of the filtering chamber, three mounting frames are slidably connected into the limiting sliding groove, the mounting frames are pulled out of the filtering chamber along the limiting sliding groove by opening the sealing door and pulling the mounting frames, and a primary-efficiency filter screen, a medium-efficiency filter screen and a high-efficiency filter screen are installed in the three mounting frames from left to right correspondingly. After the positioning grooves in the filter screens are aligned with the fixing grooves in the mounting frame, the reset springs in the fixing grooves apply outward acting force to the fixing blocks, so that the fixing blocks are separated from the fixing grooves and clamped into the positioning grooves, and the three filter screens are limited and fixed. And the filter screen can be conveniently replaced and cleaned in the later period.

Systems, methods, and other embodiments for removing contaminated materials such as asbestos from railcars (i.e., train cars and subway cars) for subsequent recycling of the railcars. In particular, a collapsible inner containment structure having a HEPA negative air pressure is used. A door on the inner containment structure is opened at one end of the inner containment structure and a railcar is transported into a work area located within the inner containment structure. The door is then closed so that the inner containment structure can maintain the negative pressure within the inner containment structure. The contaminated materials such as asbestos are removed from the inside of the railcar using a mixture of pressurized water and media.

The utility model provides a teppanyaki built-in internal circulation lampblack purification all-in-one machine, and belongs to the technical field of lampblack purification equipment. A filter box and an exhaust box which are communicated with each other are arranged on the mounting frame; the filter box is provided with an air inlet, a fan is arranged in the exhaust box, and an air outlet is formed in the exhaust box; a front primary filter screen, an electrostatic dust collector, an HEPA (High Efficiency Particulate Air) filter screen, an ozone removal layer, an activated carbon layer and an ultraviolet germicidal lamp are sequentially arranged in the filter box in the direction from the first end to the second end of the filter box; an oil collecting groove is formed in the bottom of the filter box. According to the utility model, through a multi-stage filtering and purifying technology, particulate matters, harmful gas and peculiar smell in the oil fume are effectively removed, and the efficient purification of the oil fume is realized. The device is arranged in the teppanyaki equipment, does not occupy extra space, and can save space. All parts are reasonable in design, easy to disassemble and clean and convenient to maintain.

The utility model relates to the technical field of purification components, in particular to a multi-filtering component for waste gas treatment of an environment-friendly cabinet, which comprises a purification liquid box, a primary filtering box and a secondary filtering box, an exhaust pipe and a gas conveying pipe are inserted into the top of the purification liquid box, and the gas conveying pipe is inserted into the inner bottom of the purification liquid box and is connected with a hollow gas spraying disc. The primary filter screen cover is arranged in the primary filter tank to intercept large-particle impurities, so that impurities in waste gas are reduced, and the waste gas enters the purification liquid tank through the gas delivery pipe and is dispersed in the purification liquid through the gas injection holes of the hollow gas injection disc to be purified, so that the waste gas is treated; an activated carbon filter layer, a cold catalyst filter layer and an efficient HEPA filter layer in the secondary filter box sequentially adsorb peculiar smell, decompose harmful gas and filter small particles, so that the waste gas is deeply purified; smooth circulation of gas is guaranteed through the exhaust pipe and the gas feeding pipe, the treated clean gas is exhausted through the gas outlet pipe, multiple efficient treatment of waste gas is achieved, and the environment-friendly requirement is met.

The filter element structure comprises a filter element cylinder, a connecting cylinder is fixedly connected to the left side face of the filter element cylinder, a threaded disc is connected to the right side face of the filter element cylinder in a threaded mode, a filter cylinder is arranged on the right side of the threaded disc, and a cleaning assembly is movably installed in the filter cylinder. According to the filter element structure capable of rapidly filtering, the filter element cylinder is arranged, when the filter element structure is used, the filter cylinder and the filter element cylinder are installed in a threaded mode, air is filtered in a multi-layer mode through the filter screen, and therefore large impurities in the air are filtered out and enter the filter element cylinder through the through holes; the air is filtered through the fourth filter layer, the third filter layer, the second filter layer and the first filter layer in sequence, the fourth filter layer is a filter element made of a cotton fiber material, the third filter layer is a filter paper filter element, the second filter layer is an HEPA filter element, the first filter layer is an activated carbon filter element, and fine filtering of the air can be achieved through multi-layer filtering.

The utility model belongs to the technical field of cleaning equipment, and particularly relates to cleaning equipment which comprises a dust collector and a base station, the dust collector comprises a machine body, the machine body is provided with a fan assembly and a dust cup, a filter assembly is arranged in the dust cup, an openable cup cover is arranged at the bottom of the dust cup, the base station comprises a body, a dust bag is arranged in the body, and the dust bag is arranged in the base station. A connecting pipe communicated with the dust bag is further arranged on one side of the body, a switching channel is arranged on one side of the machine body, when the machine body is installed on the body, self-cleaning is carried out in a negative pressure air suction mode, airflow does not need to penetrate through the filtering assembly to enter the dust cup in the self-cleaning process, the situation that a negative pressure channel is blocked is avoided, and the dust cup is convenient to clean. The dust cup can be compatible with a traditional HEPA filter and a more efficient multi-cone filter, dust remaining in the dust cup is directly guided into a base station dust bag through directional negative pressure, and meanwhile the advantages of efficient filtering and long service life of centrifugal separation of the multi-cone filter are considered.

The utility model discloses an air purifier filtering assembly which comprises a frame, a primary filter screen, an activated carbon filter screen and an HEPA filter screen are sequentially installed on the inner wall of the frame, an auxiliary device is arranged on the outer surface of the frame, and the auxiliary device conducts auxiliary sealing on the portion between the frame and an inner cavity of an air purifier through a rubber ring. According to the air purifier, the rubber ring is arranged, the rubber ring is fixedly installed on the outer surface of the frame, the rubber ring is adjusted so that the rubber ring can deform till the outer surface of the rubber ring completely abuts against the inner cavity of the air purifier, and then the rubber ring can conduct auxiliary sealing on the portion between the frame and the inner cavity of the air purifier; according to the air purifier, part of air can be prevented from overflowing through a gap between the filtering assembly and an inner cavity of the air purifier without being purified by the filtering assembly, and therefore the air purifying capacity of the filtering assembly can be improved.

The utility model discloses a molecular sieve oxygenerator with disinfection function, which comprises an oxygenerator main body, a shell component is arranged outside the oxygenerator main body, a first fan is arranged in the oxygenerator main body, and the shell component comprises a side frame and a rear frame; a first filtering part and an air outlet part are arranged on any side of the side frame, and a high-pressure plasma generator assembly is arranged on any side of the first fan; the first filtering part comprises a primary filter screen, an HEPA (High Efficiency Particulate Air) filter screen and a sticky carbon filter screen; the high-pressure plasma oxygen generator is reasonable in structural design, the high-pressure plasma generator component is arranged at any end of the first fan, so that the blown-out fluid is ionized after the fluid is blown out by the first fan, large dust particles in the fluid are provided with positive / negative charges, and the dust particles in the fluid are filtered by the high-pressure plasma generator component. And when passing through a reverse electric field, the fluid is just adsorbed and captured, so that the fluid is killed, oxygen molecules in the fluid are activated, oxygen is more easily absorbed by a human body, and the lung function is improved.

The utility model discloses a dust-air separation device and a vacuum dust collector, belongs to the technical field of dust collectors, and solves the problem that impurities such as dust, hair and tiny particles are excessively attached to the surface of a stainless steel cylinder due to the guidance of air, so that the dust-air separation effect is poor. And finally, impurities such as dust, hair and tiny particles gradually block holes in the stainless steel cylinder structure. Comprising a mounting shell, a connecting cylinder fixedly connected with the mounting shell, and a mounting cylinder detachably connected and communicated with the mounting shell and the connecting cylinder. When the dust-air separation device works, the driving motor drives the impeller to rotate, and air flows through the ventilation groove, the reduction cylinder and the air outlet groove and enters the stainless steel mesh cylinder and the mounting cylinder through the HEPA filter screen. The motor further drives the connecting disc and other components to rotate, negative pressure is generated, and dust enters the mounting cylinder from the dust collection head and is attached to the stainless steel mesh cylinder. Under the guidance of the external expansion sleeve, dust is moved to one end of the mounting cylinder, and during reverse agitation, the external expansion sleeve and the connecting ring sheet block the dust, so that a good dust collection effect is ensured.

The invention discloses a dust collection cup for a dust collector and the dust collector, the dust collection cup comprises a dust cup body, a filter is arranged in the dust cup body, and the filter comprises an HEPA body arranged in the filter and a filter screen wrapping the HEPA body; a filter plate is connected below the filter, and the shape of the outer edge of the filter plate is matched with the structure of the inner wall of the dust cup body. According to the dust collection cup for the dust collector, the filter plate, the filter screen and the HEPA body form a three-stage filter system, and hair, floccules and fine dust are effectively separated; the design of the funnel-shaped filter plate and the double dust outlets is matched with negative-pressure cleaning of the base station, so that garbage is automatically classified and discharged; according to the structure, hair winding is effectively prevented, the axial length of the dust collection cup is relatively shortened, the space utilization rate is remarkably increased, the problems that cleaning is not thorough and manual disassembly is needed are thoroughly solved, the maintenance frequency is greatly reduced, and the use experience is improved.

The utility model discloses an oil mist purification device for a CNC (Computer Numerical Control) machining center, which relates to the technical field of CNC machines and comprises a purification chamber, a sliding plate, a mist inlet pipe, a cover plate, an oil mist purification mechanism, a fixed clamping plate, an HEPA (High Efficiency Particulate Air) filter screen, an activated carbon plate, a turbulent flow mechanism, a transverse reciprocating mechanism and a fan. Oil mist enters the purification chamber through the mist inlet pipe, oil drops are preliminarily separated through the oil mist purification mechanism, then airflow is disturbed through the flow disturbing mechanism, the purification efficiency is improved, fine particles are further filtered and peculiar smells are further adsorbed through the HEPA filter screen and the activated carbon plate, air inlet is optimized through the transverse reciprocating mechanism, and purified gas is exhausted through power provided by the draught fan. The device adopts a multi-purification structure, combines automatic cleaning and optimized air inlet design, is high in purification efficiency and convenient to maintain, and meets the oil mist purification requirement of the CNC machining center.

This invention discloses a disinfection and ventilation system and disinfection method for a biosafety laboratory. The system includes a laboratory room with a first exhaust HEPA filter and an supply HEPA filter installed on the ceiling. The supply HEPA filter is connected to an air outlet via a main supply duct. A fourth biosafety shut-off valve and an air supply unit are sequentially installed along the air supply direction on the main supply duct. The first exhaust HEPA filter is connected to an exhaust outlet via an exhaust duct. A first biosafety shut-off valve, a bag-in / bag-out HEPA filter, an exhaust unit, and a third biosafety shut-off valve are sequentially installed along the exhaust direction on the main exhaust duct. A first bypass duct connects the exhaust duct and the supply duct. The first and third bypass ducts provide a parallel connection for the first exhaust HEPA filter and the bag-in / bag-out HEPA filter, which are connected in series. This invention uses a parallel connection during disinfection, which effectively improves the disinfection effect of the bag-in / bag-out HEPA filter.

The invention provides an integrated modular shielding type filtering device, and relates to the technical field of nuclear facility air purification, the device comprises: a filtering shell, the side wall of which is provided with an air inlet and an air outlet; the pre-filter assembly is arranged in the filtering shell, and the pre-filter assembly comprises a pre-filter cylinder and a pre-filter installed in the pre-filter cylinder; the high-efficiency filter assembly is arranged in the filtering shell, and the high-efficiency filter assembly comprises an HEPA filter cylinder and an HEPA filter installed in the HEPA filter cylinder; wherein the pre-filter and the HEPA filter are both of a cylindrical structure with the top end open and the side wall and the bottom closed, and the top ends of the pre-filter and the HEPA filter are both communicated with an air inlet channel formed by air inlets. By optimizing airflow organization and a sealing structure and integrating an on-line monitoring system, the industrial problem that radioactive substances escape when the filter element is replaced is fundamentally solved, and meanwhile the device has the advantages of being precise in maintenance, reliable in shielding and convenient and fast in modular layout.

The utility model belongs to pet transportation technology field, including: box unit, the box unit includes lower cover, upper cover and box door, the lower cover with upper cover connects, the upper cover with box door connects, the upper cover is provided with air inlet and air outlet, the upper cover includes inner shell and outer shell, and the inner shell and outer shell form air inlet air duct and air outlet air duct, fresh air unit, fresh air unit sets up in the upper cover, fresh air unit includes exhaust fan and air intake fan, exhaust fan installs in air outlet air duct, and the exhaust direction of air outlet air duct is provided with active carbon layer and HEPA layer in proper order, air intake fan installs in air inlet air duct, and the air inlet direction of air inlet air duct is provided with HEPA layer and active carbon layer in proper order, power supply unit, power supply unit with fresh air unit electricity is connected, and the utility model is provided with active carbon layer and HEPA layer, avoids the existence of peculiar smell and fluff etc. in the air that is discharged through fresh air, reduces the adverse effect to surrounding crowd etc.

Vehicle air pollution reduction system, comprising: a housing configured to be mounted externally on a vehicle and drawing in ambient air through an inlet; a cold catalyst filter within the housing configured to remove gaseous pollutants and volatile organic compounds from the air; an activated carbon filter connected downstream of the cold catalyst filter and configured to capture particulate matter, gases, and carbon monoxide; a HEPA filter connected to the activated carbon filter and configured to capture micrometer-sized particles, including PM2.5 and PM10; an antibacterial filter positioned downstream of the HEPA filter and configured to capture bacteria for improved hygiene; an anion purification filter following the antibacterial filter and configured to ionize and agglomerate airborne particles;a UV-C light integrated into the filters and configured to disinfect by inactivating microorganisms; an outlet opening connected to the filters and configured to release purified air into the environment; the housing being connected via a port.

The invention discloses a dust collector host locally assembled with a damping structure, which comprises a motor assembly, a dust cup and a HEPA assembly, an air inlet is arranged on the dust cup, a cyclone cone is arranged in the dust cup, the HEPA assembly is arranged at one end of the dust cup, the HEPA assembly comprises a HEPA frame and a first HEPA, the HEPA frame is mounted at one end of the cyclone cone, and the first HEPA is mounted at the other end of the cyclone cone. The first HEPA is installed on the HEPA frame, the motor assembly is arranged at one end of the first HEPA, and the motor assembly is connected to the dust cup; the motor assembly comprises a motor, a motor cover and a motor end cover, one end of the motor end cover is connected with the dust cup, the other end of the motor end cover is connected with the motor cover, the motor is arranged in the motor cover, a plurality of through holes are formed in the motor cover and are arranged at intervals in the circumferential direction of the motor cover, and damping shock absorption components are arranged in the through holes. Compared with the prior art, the dust collector has the advantages that the damping component is arranged, so that the dust collector can be buffered after being collided, the dust collector is prevented from being damaged, and the service life is prolonged.

This invention relates to a membrane-based heat exchanger (MemHEX) tailored for tropical climates to address challenges in indoor air quality, thermal comfort, and energy efficiency. The device features a thermally insulated hexagonal housing that optimizes airflow, minimizing turbulence and pressure drop. At its core, a quasicounterflow arrangement of hexagonal plates is integrated with a sandwich-like assembly of expanded polytetrafluoroethylene (ePTFE) membranes and spacers. This design facilitates the efficient transfer of both sensible and latent heat while maintaining separate pathways for exhaust and supply air. The MemHEX includes supply and exhaust fans strategically positioned to ensure uniform airflow across the heat exchanger core. Environmental sensors automate fan operation, regulating ventilation based on real-time conditions such as temperature, humidity, or air quality. The system also includes high-efficiency particulate air (HEPA) filters for pollutant-free operation. Scalable and efficient, the MemHEX is suitable for residential, commercial, and industrial applications.

The utility model discloses an aluminum alloy die-casting shell shaft hole inner wall polishing device, and relates to the technical field of inner wall polishing, the aluminum alloy die-casting shell shaft hole inner wall polishing device comprises a base, the left side and the right side of the upper end of the base are fixedly connected with mounting plates, the upper ends of the two mounting plates are fixedly connected with a top plate, and the lower end of the top plate is provided with a dust collection assembly; a grinding assembly is arranged in the middle of the upper end of the base, a dust suction hood is driven by two first electric telescopic rods to move downwards to a proper position, then an electric fan is controlled by a controller to be started, and negative pressure is formed in the dust suction hood under the action of the electric fan; the aluminum alloy dust generated in the polishing process can be conveyed into the collecting box through the dust suction cover, the first guide pipe, the corrugated pipe and the second guide pipe and then filtered through the HEPA filter, so that clean air is discharged from the air outlet pipe, the air containing the aluminum alloy dust is prevented from diffusing in the air environment, and the polishing effect is improved. Therefore, a safer and healthier working environment is created for workers.

This utility model relates to the technical field of wastewater treatment equipment, and discloses an integrated medical wastewater disinfection treatment device, including a treatment tank and a wastewater inlet. Waste gas treatment devices are provided on both sides of the upper surface of the treatment tank. Each waste gas treatment device includes a fixed housing. Conveying pipes are provided at the front and rear of the lower inner wall of the fixed housing. An input fan is located at the lower center of the front conveying pipe, and an output fan is located at the lower center of the rear conveying pipe. Slots are provided at the front and rear of the upper surface of the fixed housing. A molecular sieve filter is located at the rear center of the fixed housing, and a HEPA filter is located at the front center of the fixed housing. In this utility model, the waste gas treatment devices effectively remove harmful gases and particulate matter from the waste gas, preventing secondary pollution, protecting the environment and the health of operators, thereby improving safety.

The utility model discloses an air purification structure of a medical clean room in the technical field of fresh air systems, and aims to solve the problem that HEPA filter paper in the prior art needs to filter various impurities, so that the service life of the HEPA filter paper is not long. The air purifier comprises an air pipe and a driving device, a high-efficiency air filter is arranged on the air pipe, an inserting opening is formed in the air pipe, a mounting frame is arranged in the inserting opening in a sliding mode, the mounting frame is located at the air supply upstream position of the high-efficiency air filter, and no less than two filtering air chambers are arranged in the mounting frame; a washing filter screen fully distributed in the section space of the air chamber is mounted in each filtering air chamber, and the driving device is used for enabling the multiple filtering air chambers to be mutually switched in the air path communicating path of the air pipe; according to the fresh air system, the replacement and filtration burden of the HEPA filter paper is reduced by providing the front filter device, and meanwhile, the front filter device provides a simple replacement means, so that a more convenient switching means is provided for front filtration, the efficiency of the fresh air system is guaranteed, and the replacement cost of the HEPA filter paper is reduced.

The utility model provides a waterproof volume hot melt welding machine relates to waterproof volume field, including box, the inner wall top of box is connected with filter box fixedly, the inner wall of filter box is connected with HEPA filter screen, activated carbon filter screen and chemical filter screen respectively slidingly, the outer wall of filter box all is connected with first connecting plate fixedly, the inner wall of first connecting plate all is connected with clamping plate slidingly, the utility model discloses, through setting HEPA filter screen, activated carbon filter screen and chemical filter screen, can carry out adsorption filtration to harmful gas, finally through the air extractor and the air pipe export to the outside, a variety of filter screen cooperation, can effectively filter the harmful gas produced when operating, prevent the harm staff's health, and, by the synergetic effect of first connecting plate, spacing rod, clamping plate and compression spring, the user can conveniently dismouting corresponding filter screen, is convenient for its cleaning or replacement, to this end ensures the follow -up filtration effect.

The utility model relates to the field of air purifiers, and discloses an air purification device for removing TVOC pollutants, which comprises a movable base, a support housing and a filter frame, the support housing is arranged on the movable base, a cavity is arranged at the upper end of the support housing, the filter frame is arranged in the cavity, the filter frame comprises a cylinder, and the cylinder is arranged in the cavity. A zeolite bin is arranged at the bottom end of an inner cavity of the cylinder, an HEPA filter screen set is arranged above the zeolite bin, and an activated carbon filter plate group is arranged above the HEPA filter screen set. According to the utility model, the movable base is used as a mounting device for the supporting housing, the filtering frame which can be movably connected is arranged in the supporting housing, and TVOC pollutants and solid particles in the air are removed through a plurality of groups of adsorption and filtering devices, so that the indoor air is purified; the air purification device can autonomously move in the whole indoor area through the movable base, and the air purification efficiency is improved in all directions.