461 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 relates to a negative pressure dust collection type cutting machine, and belongs to the technical field of cutting machines, the negative pressure dust collection type cutting machine comprises a cutting machine workbench, a cutting module, a negative pressure dust collection module, an explosion-proof filtering system and a control system, the cutting module comprises a three-dimensional five-axis cutting mechanism and a high-power laser cutting head, and the high-power laser cutting head is loaded at the driving end of the three-dimensional five-axis cutting mechanism. The dust collector has an anti-explosion effect and an environment-friendly discharge function, and is provided with an anti-static pipeline, an inert gas injection device and a spark catcher aiming at flammable metal dust, so that the explosion risk can be remarkably reduced, multi-stage filtration is carried out by adopting the sintered metal filter cartridge, the HEPA filter screen and the like, discharged air meets the environment-friendly standard, the sewage problem of traditional wet dust collection is avoided, and the dust collector is suitable for popularization and application. And the metal plate is fixed through the evenly-distributed adsorption holes, plate deviation caused by vibration or scrap accumulation in the cutting process is prevented, and the precision of the cutting path is improved.

The utility model discloses a collecting device for ambient air detection, which comprises an air collecting tank, the air outlet end of the air collecting tank is hermetically connected with a primary air filter tank through a first air pipeline, an HEPA (High Efficiency Particulate Air) air filtering structure layer is arranged in the primary air filter tank, and an air pressure monitoring meter is arranged outside the primary air filter tank. The first-stage air filter tank is connected with a second-stage air filter tank in a sealed mode through a second air conveying pipeline, a plurality of activated carbon adsorption face nets are arranged in the second-stage air filter tank, and the air outlet end of the second-stage air filter tank is connected with an air detection box in a sealed mode through a third air conveying pipeline. According to the utility model, after the air in the surrounding environment to be detected is rapidly collected, the primary air filter tank is arranged to be matched with the secondary air filter tank, so that impurity particles in the air can be thoroughly removed, and the filtered air can be conveniently input into the air detection box for chemical component detection; the influence of impurity particles in the air on the detection result is prevented.

The invention provides an efficient multi-stage purification stable control clean room, and relates to the field of clean rooms. The efficient multi-stage purification stable control clean room comprises a clean room body, an air draft mechanism, a pre-filtering mechanism, a saturation early warning mechanism, a main filtering and purifying mechanism and an air conditioning system. According to the clean room, through mutual cooperation of the air draft mechanism, the pre-filtering mechanism and the main filtering and purifying mechanism, gas in the clean room body can be purified and filtered step by step, the gas purifying effect is optimized, and higher-quality and higher-efficiency purifying work is achieved; gas in the cleaning room body can be pre-filtered through the main stainless steel filter screen, the gas filtered through the main stainless steel filter screen can be conveyed into the isolation hood to be subjected to secondary filtration and purification treatment, the upward conveying speed of the gas can be slowed down through the arranged arc-shaped pieces, and the gas can be irradiated and sterilized by the ultraviolet lamp more sufficiently; and then the gas is filtered through the HEPA filter screen.

The utility model discloses an HEPA rotary floating sealing ring structure of a dust collector, which comprises an HEPA support, a sealing ring and a sealing ring, the HEPA support comprises an upper HEPA support and a lower HEPA support, the upper HEPA support is rotatably connected onto the lower HEPA support, and at least one first mounting groove is arranged on each of two sides of the lower HEPA support; the elastic component is mounted in the first mounting groove, and the top of the elastic component is connected with the upper HEPA bracket; the sealing rings are connected to the upper HEPA support and the lower HEPA support in a sealing mode, and the sealing rings are elastic sealing rings. Compared with the prior art, the dust cup can solve the problem that the use experience of a user is affected by deformation and failure of the sealing ring due to the fact that the sealing ring is flanged when the dust cup is taken out or put in a large vertical dust collector.

The utility model discloses an efficient HEPA potassium permanganate composite filter material preparation particle self-suction type feeding device, which comprises a feeding bin, a negative pressure mechanism and a feeding mechanism, the top of the feeding bin is provided with a main feeding port, the main feeding port is provided with a main feeding pipeline, the main feeding pipeline is provided with an upper layer electric valve and a lower layer electric valve, and the upper layer electric valve and the lower layer electric valve are connected with the negative pressure mechanism. A Y-shaped feeding pipe is mounted at the top of the main feeding pipeline, the Y-shaped feeding pipe is provided with two input pipelines and an output pipeline, the output pipeline is connected with the top of the main feeding pipeline, a negative pressure port is formed in the top of each input pipeline, a filter screen is mounted at the position, close to the negative pressure port, in each input pipeline, and branch feeding ports are formed in the positions, below the filter screens, of the input pipelines; the utility model further comprises. According to the automatic feeding device, automatic feeding and supplementing of particle materials can be achieved, manual time-consuming and labor-consuming feeding and frequent feeding are not needed, the input pipeline is switched to be communicated with the negative pressure source in the feeding process, the filter screen is prevented from being blocked, and the feeding efficiency of the particle materials is improved.

The utility model relates to a portable water trapping device based on MOFs (Metal-Organic Frameworks). The portable water trapping device comprises a main shell, and an air inlet and an air inlet fan are arranged at the top of the side surface of the main shell; an HEPA (High Efficiency Particulate Air) filter screen and an activated carbon air filtering module are arranged below the air inlet fan; an MOFs water molecule adsorption module and an electric heating element for heating the MOFs water molecule adsorption module are arranged below the activated carbon air filtering module in a communicating manner; a thermoelectric refrigeration TEC element and a condensation cavity in contact with a refrigeration area of the TEC element are arranged below the MOFs water molecule adsorption module, and an exhaust port communicated with the condensation cavity is formed in the side face of the main shell; a water filtering module and a water tank communicated with the water filtering module are arranged below the condensation cavity in a communicating manner; a power distribution unit is further arranged in the main shell and used for supplying power to the air inlet fan, the electric heating element and the TEC element. The device can be carried to outdoor places such as the field, air water trapping in a dry environment is achieved, and fresh water resources are provided for use.

The invention relates to the technical field of indoor air treatment, and discloses an indoor fresh air humidification system which comprises an air exchange mechanism, and a humidification mechanism is arranged on the left side of the air exchange mechanism. When the indoor fresh air humidification system is used, an impeller is driven by a first motor in the air exchange mechanism to suck in external air, the external air is filtered by a primary filter screen and a high-efficiency filter screen and then fed into the humidification mechanism and a PTC humidifier, moisture is evaporated through PTC heating, the air is humidified, and then the air is conveyed into a room through an air conveying pipeline; the filter screen can be conveniently inserted into the ventilation mechanism through the clamping groove, the clamping block is pressed during insertion to enable the spring to contract, the clamping block is expanded by the elastic force of the spring when the filter screen is inserted to the bottom end, the groove in the surface of the filter screen is clamped, fixation can be relieved and the filter screen can be easily taken out only by pulling the pull ring when the filter screen is fixed and replaced, and part of water mist stays in a pipeline in the humidified air conveying process. And a second motor is started to drive a knocking device, so that the gas pipeline vibrates, water mist is vibrated, and a hard scale layer is prevented from being formed.

The invention discloses a dust-free environment purification method for biological pharmacy. Comprising the following steps: constructing three layers of metal filter screens, realizing particle interception through a conical micro-column array, an Al2O3 / TiO2 composite ceramic layer and a diamond-like carbon film, fixing lysozyme by adopting a crystal face regulated ZIF-8 crystal, and realizing dual inactivation of microorganisms by combining dielectric barrier discharge of a spiral plasma channel. The electrostatic adsorption HEPA filter paper adopts a BaTiO3-graphene quantum dot composite electret substrate, and a TiO2 / graphene heterojunction catalytic layer is decomposed by a Pt-Co bimetallic nanocluster and a photocatalysis-plasma-ozone-thermocatalysis quadruple oxidation system; and 0.1 mu m organic aerosol triggers graded reverse pulse cleaning based on differential pressure integration and a particle concentration threshold value, and the honeycomb flow guide structure drives a shutter and a gradient density sintering metal flow guide plate through piezoelectric ceramics to maintain laminar flow uniformity. According to the scheme, the limitation of a traditional technology is broken through, the purification efficiency of 0.1 micron particles is improved, and a high-stability solution is provided for a biopharmaceutical clean room.

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 dust box and a cleaning robot system. The dust box includes: a dust box body, a garbage chamber is arranged inside the dust box body. The dust box further includes an air inlet, an air outlet, and a filter. A first air flow channel is also arranged between the filter and the garbage chamber, and the first air flow channel is configured as a structure that can be opened and closed by a valve member. A second air flow channel is also arranged between the filter and the garbage chamber; a cleaning robot including the aforementioned dust box, a cleaning robot for performing vacuum cleaning and mopping cleaning parts, and a cleaning robot system composed of the cleaning robot and an integration station, where the integration station realizes docking with the cleaning robot to collect garbage and clean the cleaning parts; this solution solves the problem that the existing dust box structure cannot achieve separate centralized cleaning of the HEPA by the existing base station, and solves the problems of the existing base station with complex structure, high cost, poor experience effect caused by regular cleaning and replacement of the filtration system, serious dust emission, and single function that cannot meet the use requirements.

The utility model discloses an efficient cyclone dust-air separation dust cup, which belongs to the technical field of dust collectors and comprises a dust cup main body, an HEPA filter part is arranged at the top of the dust cup main body, a bottom cover is arranged at the bottom of the dust cup main body, and a first-stage filter part, a second-stage filter part and a third-stage filter part are sequentially arranged in the dust cup main body. Dust and air flow enter the dust cup and sequentially pass through the first-stage filtering piece, the second-stage filtering piece and the third-stage filtering piece, the first-stage filtering piece filters large particles, the second-stage filtering piece filters fine particles, the third-stage filtering piece filters tiny dust, and when the air flow passes through the third-stage filtering piece, the rotatable air guide cover automatically rotates due to stress of the spirally-arranged air guide holes of the rotatable air guide cover. Wherein a filter screen is arranged in the air guide hole, airflow upwards enters the HEPA through the air guide hole, tiny dust enters the dust collection groove along the dust guide groove through centrifugal force and gravity, and therefore efficient dust-air separation is achieved, and the dust and airflow separation effect is greatly improved through the structure.

The invention relates to the technical field of dust removal and filtration, and particularly discloses a dust removal and filtration treatment device for argon recovery, the dust removal and filtration treatment device comprises a gas inlet pipe, the right end of the gas inlet pipe is fixedly provided with an H-shaped pipeline, the center of the right end of the H-shaped pipeline is fixedly provided with a gas outlet pipe, and the lower end of the gas outlet pipe is fixedly provided with an outer sleeve box; an upper partition plate is fixedly mounted at the upper end of the interior of the outer sleeve box; a through hole is formed from the upper end face to the lower end face of the upper partition plate, a circular ring is fixedly installed on the inner circumferential face of the through hole, and a gear ring is rotationally installed in the circular ring. In this way, argon in the outer sleeve box can penetrate through the vent holes to enter the sleeve and then be filtered by the HEPA filter. In the overhauling process, the single HEPA filter can be started to work according to the situation, and the other HEPA filters can be taken down in a rotating mode; in this way, it is guaranteed that the device can still work in the overhauling process.

The invention discloses an allergen purification method and system based on an air conditioner condensation adsorption principle. The allergen purification system comprises a central control unit, a user control end, a desensitization mode trigger module, a fresh air volume control module, an air speed adjusting module, a compressor frequency conversion control module, a particulate matter concentration detection module and a temperature detection module. The output end of the user control end is electrically connected with the input end of the central control unit, the output end of the desensitization mode trigger module is electrically connected with the input end of the central control unit, and the output end of the particulate matter concentration detection module is electrically connected with the input end of the central control unit. According to the air conditioning system, the active desensitization process without an efficient filter screen is achieved, the equipment maintenance frequency and the consumable cost are reduced, operation strategy optimization is used for replacing large structural modification, the adaptability is high, and rapid integration of the air conditioning system is facilitated.

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 present invention discloses a vacuum cleaner with a rotating wheel assembly, which includes a housing for accommodating a motor, a cup body connected to the housing and having a dust cup cavity, and a rotating wheel assembly disposed in the dust cup cavity and performing dust separation, wherein the rotating wheel assembly includes a separation wheel having a plurality of airflow channels and rotatable for separating dust, a following wheel coaxial with and adjacent to the separation wheel, a fixing frame at one end for accommodating the separation wheel and the following wheel, an impeller disposed at the other end of the fixing frame and coaxial with the separation wheel, and a rotating shaft passing through the axes of the separation wheel, the following wheel, and the impeller, and the rotating wheel assembly can rotate actively or passively. The advantages of the present invention are: avoiding the use of pre-filters such as sponges or HEPA, reducing the cost of use, and being capable of both wet and dry vacuuming, thereby improving the user experience.

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.