596 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 dust collector with an air inlet HEPA structure capable of scraping dust and cleaning, and relates to the technical field of dust collectors. The dust collector comprises a dust collector body, a machine body is arranged at the top end of the dust collector body in a clamped mode, a filtering assembly is arranged in the machine body in a clamped mode, a dust cleaning assembly is rotationally arranged in the filtering assembly, one side of the dust cleaning assembly is attached to the inner wall of the filtering assembly, and a reset assembly is arranged in the machine body. The dust cleaning assembly is driven to move by pressing the reset assembly, then one side of the dust cleaning assembly is attached to the inner wall of the filter assembly, then the reset assembly is rotated to drive the dust cleaning assembly fixedly installed at one end of the reset assembly to rotate, and due to the fact that the filter assembly is arranged in the wave state, when the dust cleaning assembly rotates, the dust cleaning assembly is not prone to falling off. The filter assembly can be vibrated, and then dust attached to the filter assembly can be vibrated off, so that cleaning of the filter assembly is completed, and the phenomena of dust raising and dust scattering are avoided.

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 a glassware cleaning machine which comprises a cleaning tank, a water storage tank is fixed in the cleaning tank, the upper end of the water storage tank is connected with a cleaning agent tank and a neutralizer tank, and peristaltic pumps are installed on connecting pipes between the cleaning agent tank and the water storage tank and between the neutralizer tank and the water storage tank. The cleaning device has the advantages that the peristaltic pump, the flow meter and the HEPA filter screen are designed, in the cleaning process, the peristaltic pump and the flow meter are combined to automatically and accurately distribute a cleaning agent and a neutralizing agent, then the prepared cleaning agent cannot affect the body of a worker, meanwhile, in the drying process, the HEPA filter screen guarantees the cleanliness of hot air, and the drying efficiency is improved. And therefore, the sterility of the cleaned glassware is ensured, and the cleaning effect is improved.

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 present invention discloses a packaging box production and printing device with a drying mechanism, comprising a box body, wherein a conveyor belt is arranged inside the box body. Through the arrangement of the drying mechanism, external air can be sucked in by a blower and sent into a heating box, the heating wire heats the air in the heating box, and the air is conveyed into a diversion shell through an air outlet hood, and the hot air is evenly refined through a plurality of groups of diversion holes at the bottom of the diversion shell, so that the hot air can be evenly dispersed on the surface of the packaging box, thereby enhancing the drying efficiency of the ink or pigment on the surface of the packaging box; through the arrangement of the filtering mechanism, the air generated by the drying mechanism inside the box body to dry the ink or pigment on the surface of the packaging box can be started and extracted through two groups of exhaust fans in the filtering mechanism, and the air entering the filter shell is purified and filtered by the activated carbon adsorption layer and the HEPA high-efficiency filter mesh layer before being discharged, thereby avoiding the emission of harmful gases and particles generated by the drying of the ink or pigment to a certain extent, and reducing the pollution to the surrounding environment.

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 utility model discloses a multifunctional indoor air purifier which comprises a machine body, a pre-filtering net is arranged on one side in the machine body, an air filtering net is arranged on one side of the pre-filtering net, an activated carbon net is arranged on one side of the air filtering net, and mounting grooves are symmetrically formed in the outer sides of the pre-filtering net, the air filtering net and the activated carbon net. By arranging a fastening assembly, after a pre-filtering net, an HEPA filter net and an activated carbon filter net are installed, a user can rotate an adjusting lead screw to enable the adjusting lead screw to rotate along a supporting plate, and in the rotating process, an elastic telescopic frame is driven by a connecting plate to move in an empty groove along a guide plate; and in the moving process, the elastic telescopic rod makes contact with the guide plate and can be continuously stretched and enter the mounting groove through the empty groove, so that the pre-filtering net, the HEPA filtering net and the activated carbon filtering net are fastened and prevented from shaking due to airflow blowing, noise is prevented, and the user experience effect is improved.

The HEPA filter element type waterproof dust collection bag comprises a plastic bag body and a main body plastic part, the plastic bag body is fixedly connected with the back face of the main body plastic part, a dust collection channel and a filter element installation chamber are arranged in the main body plastic part, a front air outlet is formed in the front face of the main body plastic part, and a rear air outlet is formed in the back face of the main body plastic part. A front dust suction opening is formed in the front face of the main body plastic part, a rear dust suction opening is formed in the back face of the main body plastic part, the rear dust suction opening and the rear air outlet are communicated with the interior of the plastic bag body, a filter element made of HEPA filter paper is installed in the filter element installation chamber, and the periphery of the filter element is bonded with the main body plastic part through hot melt adhesive. The HEPA filter element type waterproof dust collection bag is good in waterproof performance, the filtering effect cannot be affected by moisture, and the dust collection bag is convenient to use and long in service life. The filter element formed by the HEPA filter paper is good in filtering effect and can effectively intercept garbage such as dust. The dust collector can be used for absorbing water without worrying that the dust collection bag is affected by moisture.

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.

Articles and methods involving filter media are generally provided. In certain embodiments, the filter media includes at least a first layer, a second layer, and an adhesive resin positioned between the first layer and the second layer. In some embodiments, the first layer may be a pre-filter layer or a support layer. The second layer may, for example, comprise fibers formed by a solution spinning process and / or may comprise fine fibers. In some embodiments, the adhesive resin may be present in a relatively low amount and / or may have a low glass transition temperature. The filter media as a whole may have one or more advantageous properties, including one or more of a high stiffness, a high bond strength between the first layer and the second layer, a high gamma, and / or a low increase in air resistance after being subjected to an IPA vapor discharge. The filter media may be, for example, a HEPA filter and / or an ULPA filter.

The utility model relates to the technical field of dryers, and discloses a dryer with a tail gas treatment function, which comprises a drying box, the surface of the drying box is connected with a connecting pipe, the connecting pipe penetrates through the drying box, and the connecting pipe is fixedly connected with the drying box. A rocker is rotated clockwise or anticlockwise, so that a second gear drives two first gears to rotate, two rotating rods rotate in opposite directions, an arc-shaped sliding groove drives a first sliding plate, a through hole, an abutting rod and a rubber pad to move downwards, the first sliding plate, the through hole, the abutting rod and the rubber pad move upwards, and the rubber pad is separated from an air outlet of a Y-shaped pipe when the rubber pad moves downwards. When drying is stopped, the rubber pad moving upwards blocks the other air outlet of the Y-shaped pipe, at the moment, a corresponding sealing door needing to be replaced can be opened, the activated carbon filter element, the HEPA filter element and the molecular sieve filter element can be pulled out to be cleaned or replaced, and therefore replacement can be conducted without stopping drying, and the drying efficiency is improved.

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 a welding fume purifier easy to adjust, relates to the technical field of fume purifiers, and is suitable for fume purifiers in the welding process. The supporting assembly is arranged on the outer surface of the shell; the dust collection unit is arranged on the upper surface of the shell and used for collecting dust; the dust collection unit is arranged in the shell, the dust collection unit comprises a connecting assembly and an adjusting assembly adjusting valve, the connecting assembly and the adjusting assembly adjusting valve are arranged on the outer surface of the shell, and the purification unit comprises a purification assembly arranged in the shell and a cleaning assembly arranged in the shell. According to the welding fume purifier disclosed by the utility model, the suction angle of the welding fume purifier can be flexibly adjusted through the mutual matching of the base, the adjusting component adjusting valve and the telescopic bent suction pipe, and meanwhile, the suction force of the welding fume purifier can be adjusted; and a driving motor, a lead screw, a limiting sliding rod, a cleaning plate, an HEPA efficient filter, an activated carbon filter and an exhaust fan are matched with one another, so that sucked smoke dust can be conveniently purified and filtered.

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 the technical field of air conditioner system equipment, in particular to an air conditioner noise reduction filter which comprises an air conditioner noise reduction box body, a butt joint opening is formed in the middle of the left side of the air conditioner noise reduction box body, a filter pipe box is detachably arranged in the right side of the air conditioner noise reduction box body, and a noise reduction inner cavity is formed between the inner wall and the outer surface of the air conditioner noise reduction box body. A laminated folded plate is arranged at the left end in the air conditioner silencing box body, a ceramic partition plate is arranged on the right side of the laminated folded plate, the surface of the ceramic partition plate is fixedly connected with the middle of the inner wall of the air conditioner silencing box body, and the left side of the filter pipe box is connected with the right side of the ceramic partition plate. According to the air conditioner silencing filter, the detachable activated carbon filter screen and the filter pipe box loaded with the concave-convex honeycomb filter screen and the HEPA filter screen are additionally arranged at the head and the tail respectively, all the filter screens are installed and fixed through screws, disassembly and assembly are rapid and convenient, meanwhile, a large number of noise reduction and sound absorption structural plates are additionally arranged in the air conditioner silencing filter, air impurities can be filtered, and meanwhile the noise reduction effect is good. And the sound attenuation and noise reduction functions are greatly improved.

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.