345 results about "HEPA" patented technology

The invention relates to the field of household appliances, and discloses an air purifier efficient filter screen replacement prompting method and system.The method comprises the steps that firstly, air adsorption data are obtained, and the concentration of pollution particles is recognized to determine a filter screen load mode; analyzing the use state of the filter screen, and performing attenuation detection in combination with historical replacement records to obtain attenuation data; calculating the service residual life according to the attenuation data, evaluating a purification index, generating a filter screen efficiency index in combination with the environment air quality, and dividing replacement levels; then configuring multi-order prompt information according to levels, determining a filter screen edge area, calculating a penetration rate and positioning a weak part; and finally, generating a local failure graph, extracting failure interference factors, constructing adaptive replacement logic and formulating a replacement prompt scheme. The filter screen utilization rate can be increased, and the purification efficiency can be guaranteed.

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 a dust cup assembly, which belongs to the technical field of cleaning equipment, and comprises a cup body and a filter arranged in the cup body, the cup body is internally provided with an accommodating space, and the cup body is provided with an inlet communicated with the accommodating space; the filter is at least partially arranged in the accommodating space, the filter comprises a filter bracket mounted on the cup body, and an HEPA assembly is arranged in the filter bracket; the filtering support comprises a support body and a supporting piece, a hollowed-out area is formed between the support body and the supporting piece, the support body and the supporting piece are fixedly connected through a supporting rod, the outer end face of the supporting piece is an arc curved surface with the wide upper portion and the narrow lower portion, and the hollowed-out area between the supporting piece and the support body is covered with a filtering net. A cyclone cone corresponding to the inlet is arranged on the outer end face of the support body. By improving the structure of the supporting piece, when sundries such as dust move downwards along with cyclone, the supporting piece with the circular arc curved surface can smoothly guide dirt to enter the dust storage space downwards, and the situation that the filter is blocked due to the fact that hair is wound around the supporting piece is avoided.

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 discloses a self-rotating whirlwind wool-winding-preventing dust cup which comprises a dust cup body, the dust cup body comprises an outer shell and an inner shell which are integrally designed, an air inlet is obliquely formed between the outer shell and the inner shell in a penetrating mode, a separation cavity communicated with the air inlet is formed in the inner shell, and the separation cavity is in butt joint with a dust collecting cavity at the bottom of the outer shell; the cyclone assembly comprises an inverted-cone-shaped rotary cone net and a cyclone turbine positioned in an inner cavity of the rotary cone net, filter screen holes are formed in the rotary cone net, a first flow guide plate positioned with the rotary cone net is arranged on the outer side of the cyclone turbine, and a rotary shaft extends on the cyclone turbine; the HEPA assembly comprises a connecting seat and an HEPA structure, a connecting pipe is arranged in the middle of the connecting seat, and a rotating shaft is rotationally connected to the central inner pipe; the bottom cover assembly is rotationally connected to the dust cup body. The dust cup can solve the problems that when a cyclone filtering structure in an existing dust cup is used, wool is prone to being wound on the surface, dust is prone to being embedded in the surface, follow-up filtering and overflowing quality is affected, and the dust cup and the cyclone filtering structure are difficult to clean.

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.

A vertical duct used for circulating air through spaces of upper and lower floors in a building, which is capable of keeping the air clean while maintaining it at appropriate temperature and humidity levels in the entire building, is to be provided. Photocatalyst is sprayed onto an inner wall surface of a vertical duct, and baffle plates are placed at regular intervals on a long shaft thereof in its longitudinal direction. Each of the baffle plates is formed to have a circular shape, and an LED lighting for emitting light toward the photocatalyst is provided on the inner wall surface of the vertical duct. An axial flow fan may be a vertical-duct fan including an HEPA filter and a scirocco fan.

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 invention discloses nano-silver paste pre-sintering equipment and a using method thereof. The nano-silver paste pre-sintering equipment comprises a sintering box, a plurality of supporting plates, a vacuum pump, a gas purification mechanism and a micro-vibration mechanism. Compared with the prior art, the sintering device has the advantages that through the gas purification mechanism, air in the sintering box can be pumped out and efficiently filtered and purified in the presintering process, emission of harmful gas is reduced, the working environment is greatly improved, and the body health of workers is protected; through the arrangement of the micro-vibration mechanism, the substrate can slightly vibrate, so that the uniformity and compactness of the nano-silver paste and the performance of the nano-silver paste after final sintering can be improved; and through the mounting mechanism, the replacement operation of the activated carbon filter plate and the HEPA efficient filter plate can be conveniently completed, the maintenance time and the downtime are shortened, and the use efficiency of the equipment and the production continuity are 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 utility model discloses a low-nitrogen burner gun fire tube, which relates to the technical field of low-nitrogen burner gun fire tubes, and comprises a low-nitrogen burner main body, a mounting groove is arranged on the side surface of an air inlet channel of the low-nitrogen burner main body, and an air volume control mechanism is arranged in the mounting groove. By means of the air volume control mechanism, the air volume entering the combustor can be controlled, air can be filtered, when the three air inlet holes are completely aligned, outside air can rapidly enter a mixing cavity of the combustor, and when the first air inlet hole is staggered from the second air inlet hole and the third air inlet hole, the outside air can rapidly enter the mixing cavity of the combustor. By means of the structure, outside air can slowly enter the combustor mixing cavity or even cannot enter the combustor mixing cavity, a worker can rapidly adjust the air inlet amount according to the actual situation, meanwhile, impurities in the air can be prevented from entering the combustor mixing cavity through the efficient filter screen made of the glass fiber filter material, the combustion efficiency is improved, and the service life of the combustor is prolonged. And large smoke dust is prevented from being generated after combustion, and the device is more scientific and efficient.

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 a moxibustion fixing device for internal medicine of traditional Chinese medicine, which comprises a sleeve, a smoke exhaust filtering mechanism with a smoke exhaust fan is arranged on the sleeve, the smoke exhaust filtering mechanism comprises an activated carbon filter screen and an HEPA (high efficiency particulate air) filter screen, and the smoke exhaust fan is mounted in an inner ring of the sleeve. According to the utility model, the smoke in the smoke exhaust filtering mechanism is filtered by the activated carbon filter screen and the HEPA filter screen and then exhausted into the air, so that the harm to people is avoided; the pollution of harmful substances generated by the moxa sticks or the moxa cones to the air environment and the harm caused by the fact that people around the moxibustion therapy tank inhale harmful gas can be reduced; the threaded sleeve only needs to be screwed out of the sleeve, then the activated carbon filter screen and the HEPA filter screen are sequentially screwed out of the threaded sleeve, and the activated carbon filter screen and the HEPA filter screen are convenient to disassemble and assemble through threaded connection.

The utility model relates to the technical field of formaldehyde tail gas treatment, and discloses a tail gas furnace nozzle with a carbon deposition prevention function, which comprises an incinerator, two sides of the incinerator are both fixedly connected with a nozzle pipeline, the top of the nozzle pipeline is provided with a flame arrester, the bottom of the nozzle pipeline is provided with a lead-out valve, and the lead-out valve is connected with the flame arrester. A treatment box is fixedly connected to one side of the incinerator, a recycling and filtering assembly is arranged in the treatment box and comprises a transverse plate, a vertical plate, a water storage cavity, an activated carbon plate and an HEPA filtering plate, and the transverse plate is arranged in the treatment box. According to the tail gas furnace nozzle with the anti-carbon-deposition function, methanol in the pipeline can be completely discharged and recycled through the flame arrester and the nozzle pipeline, the problem of nozzle carbon deposition is solved, waste heat of tail gas can be recycled through the recycling and filtering assembly, dust and smoke dust in the tail gas are adsorbed through an activated carbon plate and an HEPA filtering plate, and the tail gas can be recycled through the recycling and filtering assembly. And the pollution to the air environment is reduced.

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.

A ventilation device according to an embodiment of the present invention is equipped with a differential pressure sensor that detects a pressure difference between an inlet and an outlet of a HEPA filter, and an inlet-side sensing path and an outlet-side sensing path connected to the differential pressure sensor are formed. The inlet-side sensing path includes an inlet-side vertical path through which inlet-side air of the HEPA filter flows in, and a plurality of inlet-side horizontal paths connected to the inlet-side vertical path, and the outlet-side sensing path includes an outlet-side vertical path through which outlet-side air of the HEPA filter flows in, and a plurality of outlet-side horizontal paths connected to the outlet-side vertical path. The plurality of inlet-side horizontal paths and the plurality of outlet-side horizontal paths are spaced apart from each other in the vertical direction along the length of the HEPA filter.

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 utility model discloses a horizontal dust collector. The horizontal dust collector comprises a main body, an air inlet pipe is arranged at the front end of the main body, and an outlet cover is arranged at the rear end; airflow can enter from the air inlet pipe and then flow out from the outlet cover; the height of the air inlet pipe is approximately consistent with that of the outlet cover; the main body is also sequentially provided with a dust barrel and a vacuum source; the dust barrel is a cyclone dust cup; the vacuum source is electrically connected with the power line, and when the power line is connected with the power supply, the vacuum source can be electrified to start working; according to the horizontal dust collector, the cyclone dust cup is used for replacing an old-fashioned HEPA to separate dust, the HEPA does not need to be replaced regularly, and the use cost is low; meanwhile, the dust barrel and the vacuum source are vertically arranged respectively, arrangement is more regular, the overall height of the main body can be reduced, and the shape is more harmonious.