1898 results about "Air filtration" patented technology

The embodiments provide a system and method for filtering out smoke and / or toxic gases / fumes from air in a building. The system integrates various smart devices with an HVAC system along with a controlling software application that can change the state of the smart devices, thereby controlling the types and quantities of air moving through the HVAC system at any time. In particular, the system can adjust the openings of one or more smart registers to control how much air passes in and out of the HVAC system over a given period of time. The system can also adjust the opening of a smart intake vent to control how much fresh (outside) air passes into the system over a given period of time. The system can also adjust the opening of a smart furnace valve that is disposed within the furnace.

The invention discloses a pseudo-ginseng seed storage method, relates to the technical field of seed treatment, and aims to solve the problems that pseudo-ginseng seeds are difficult to store, easy to lose vigor and severely mildew.The pseudo-ginseng seed storage method adopts a specially-made bionic microenvironment packaging unit to wrap the seeds, the inner layer of the specially-made bionic microenvironment packaging unit contains a moisture slow-release agent, and a bacteriostatic agent and active substances needed by germination can be intelligently released in a staged mode; the outer layer of the seed packaging box is a selective breathable film which integrates humidity and microbial contamination state indication functions and stress buffer characteristics, then the packaged seed is placed in an intelligent regulation and control storage cabin, and the temperature and humidity are accurately regulated and controlled by the storage cabin; gas components (such as low oxygen, high carbon dioxide or ozone) regulation and control, efficient air filtration and an intelligent monitoring and remote management system can be selected, the service life of the seeds can be remarkably prolonged, high germination rate and activity are kept, mildew is effectively inhibited, physiological after-ripening and germination are optimized, and intelligentization, standardization and refinement of seed storage management are achieved.

The invention relates to the technical field of air conditioning, and discloses a control method of air treatment equipment. The filter screen device of the air treatment equipment comprises a filter screen body used for filtering air; the ultrasonic generator is connected with the filter screen body in a contactable manner so as to transmit vibration energy of the ultrasonic generator to the filter screen body. According to the self-cleaning filter screen device, high-frequency vibration of the ultrasonic generator is used for conducting vibration cleaning on dust attached to the filter screen body, almost no dust remains on the filter screen body, cleaning is thorough, the cleaning efficiency is high, noise is low when the ultrasonic generator works, energy consumption is low, and the use experience of a user can be effectively improved through the self-cleaning filter screen device. The vibration intensity and the vibration frequency of the ultrasonic generator are controlled according to the environment temperature and / or humidity, and the cleaning effect is ensured.

The invention belongs to the technical field of environmental protection equipment, and particularly relates to a textile workshop automatic dust filtering device which comprises an outer cylinder, a filtering mechanism used for filtering fiber dust in a textile workshop is arranged in the outer cylinder, and the filtering mechanism comprises a rotatable lower flow guide blade and a rotatable upper flow guide blade. The size of the lower flow guide blade is larger than that of the upper flow guide blade, a rotatable filter cartridge is arranged on the outer side of the lower flow guide blade, a plurality of connecting frames are arranged above the upper flow guide blade, and the connecting frames are arranged in an inclined mode. The friction balls on the surfaces of the matching rods adsorb and roll impurities filtered by the filter cartridge, the filter cartridge is self-cleaned, the situation that fiber chippings adhere to the filter cartridge to affect the air filtering effect of the filter cartridge is avoided, the filtering effect of the filter cartridge can be effectively improved, and the dust filtering efficiency of the dust filtering equipment on a textile workshop can be improved.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

The utility model relates to an air filter element device of an air compressor, and relates to the field of air filtration. The air filter element device comprises a shell, a plurality of air filter elements are arranged in the shell, the shell is provided with air conveying pipes in one-to-one correspondence with the air filter elements, a sealing disc used for connecting the air conveying pipes and the air filter elements is arranged in the shell, and one end of the sealing disc abuts against the sealing disc; the inner wall of the shell is provided with a quick release assembly used for connecting the air filter element with the air conveying pipe, and one side of the shell is provided with a cabin door. The multiple air filter elements are placed in the shell, the air filter elements are fixed to the inner wall of the shell through the fixing assemblies, the air filter elements correspond to the air conveying pipes one to one, and an operator only needs to regularly observe the states of the filter elements in the shell to judge whether the filter elements need to be replaced or not; and an operator can conveniently mount and dismount the air filter element through the quick dismounting assembly, so that the effect of uniformly managing the air filter elements of a plurality of air compressors in the same oxygen generator is realized.

The invention discloses a fused electrostatic spinning polymer / molecular sieve blended composite fiber as well as a preparation method and application thereof. The melt electrostatic spinning polymer / molecular sieve blended composite fiber is prepared from the following raw materials in parts by weight: 25-90 parts of a thermoplastic polymer matrix, 5-75 parts of a molecular sieve, 1-10 parts of a compatibilizer and 0-5 parts of a conductive additive. According to the polymer / molecular sieve blended composite fiber material and the preparation technology, no solvent participates in the whole process, and the green manufacturing requirement is met. Moreover, in the fiber material, the molecular sieves can be uniformly distributed on the superfine polymer fibers, scanning electron microscope pictures show that the molecular sieves are uniformly embedded into the material, no aggregate larger than 10 microns exists, and the fiber material has a hierarchical pore structure, a high specific surface area and excellent mechanical properties. Therefore, the fiber material can be applied to the fields of air filtration, catalytic reaction, drying purification, adsorption separation and the like.

The present invention discloses an air filtration membrane based on nanohybrid-modified polylactic acid fiber and a preparation method thereof. The present invention adopts a microwave-assisted in-situ synthesis method to directly induce the in-situ growth of ZIF-8 nanocrystals on the surface of CNTs to obtain CNT@ZIF-8 nanohybrids. Through coaxial electrospinning technology, an air filtration membrane with CNT@ZIF-8 uniformly embedded in polylactic acid fibers is obtained. The preparation method of the present invention is simple and the conditions are controllable. The prepared air filtration fiber membrane has the advantages of high surface potential, large specific surface area, good air permeability, long-term filtration, etc., and is an air filtration material with broad application prospects.

The invention belongs to the technical field of lung function nursing, and discloses a nursing device for improving lung function after thoracic surgery, comprising: a back plate, two sides of the lower end of the back plate are respectively provided with an air filter box and a waste liquid inbox; an outlet of the air filter box is connected with a breathing mask through a hose; a mouthpiece is fixedly arranged on the breathing mask; a suction pump is arranged on the waste liquid inbox, the input end of the suction pump is communicated with a sputum suction pipe, and the sputum suction pipe is in sliding connection with the breathing mask; elastic ropes are fixedly arranged on the two sides of the lower end of the back plate, handles are fixedly arranged at the outer ends of the elastic ropes, and a monitoring mechanism is fixedly arranged on the back plate. The device can be conveniently used when a patient lies in bed, the device can be fixed to the back through the shoulder buckle belt and the waist buckle belt, the patient can hold the handles with two hands to stretch the elastic rope to conduct chest expanding training, the comprehensive evaluation module comprehensively evaluates the physical condition and the lung function condition of the patient, the drainage monitoring module monitors the drainage condition, and the risk prediction module conducts risk prediction.

The invention provides a clean air main machine with a dispensing device storage bin and a pneumatic dispensing system.The clean air main machine comprises a machine shell, an air source device and an air filtering device are installed in the machine shell, an air outlet port is formed in the machine shell, and the air source device is connected with the air outlet port through the air filtering device; the air outlet end opening is connected with the air inlet end of the medicine dispensing device, a containing bin used for containing the medicine dispensing device is formed in the machine shell, and sterilization equipment is arranged in the containing bin. Before the dispensing device is used, the dispensing device can be placed in the storage bin of the clean air main machine, the sterilizing device in the storage bin is used for sterilizing the dispensing device, the sterilized dispensing device is stored in the storage bin, and bacteria in air are prevented from entering and adhering to the dispensing device to cause pollution.

The invention discloses an air compressor filter device for hydroxypropyl methyl cellulose production, and belongs to the technical field of compressed air filtration, the air compressor filter device comprises a box body, an ash removal device is assembled in the box body, the ash removal device comprises a filter screen II, the interior of the box body is fixedly connected with a hydraulic bin I, and the hydraulic bin I is fixedly connected with a hydraulic pump. A piston at one end in the first hydraulic bin is slidably connected with a first hydraulic rod, a piston at the other end in the first hydraulic bin is slidably connected with a second hydraulic rod, and the tail end of the second hydraulic rod is rotatably connected with a first rotating rod in a penetrating mode. According to the device, the dust removing device is arranged, through cooperation of a first rotating rod, a barrel brush and other structures, hydroxypropyl methyl cellulose dust is removed and collected into the storage box after filtering is completed, and meanwhile it is guaranteed that the dust in the storage box cannot be blown up again to be attached to a filter screen in the filtering process; therefore, the problem that ash removal operation is complex and tedious is solved, and the effects that the filter screen is smooth and dust is convenient to remove and recycle are achieved.

A portable small protective workstation for alpha nuclide operation comprises a protective cabin, a transparent window and glove holes are formed in the front side face of the protective cabin, radiation-resistant operating gloves are embedded in the glove holes in a sealed mode, a tray inlet is formed in the side face of the protective cabin, and a drawer type bracket is connected to the tray inlet in a sliding mode. The drawer type bracket comprises a tray layer, a cushion layer and a cover plate, the tray layer and the cushion layer are both vertically and fixedly connected to the side face of the cover plate, the tray layer is located above the cushion layer, a high-adsorbability radioactive water absorption pad is fixedly installed on the cushion layer, a plurality of through holes are formed in the bottom face of the tray layer, and the tray layer and the cushion layer are movably installed in the protection cabin body through a tray inlet. The cover plate abuts against the outer side face of the protection cabin in a sealed mode. An air filter box is arranged above the protective cabin body, and a filter layer is arranged in the air filter box. According to the utility model, the defects in the prior art are overcome, and the organic unification of radiation protection, pollution control and experiment convenience for operators is realized.

An electric vehicle endurance system composed of battery formation and electrolyte injection, ventilation, and cooling systems, comprising a battery formation and electrolyte injection system, a battery case air filtration system and an annular battery cell cooling system which are arranged on an electric vehicle. When the electric vehicle is used, the temperature of an annular battery cell rises during operation of the annular battery cell, and the annular battery cell cooling system reduces the temperature of the annular battery cell. The battery case air filtration system is responsible for discharging and supplementing gas generated during the operation of the annular battery cell. The electrolyte lost during the operation of the annular battery cell is supplied by the battery formation and electrolyte injection system. The present application can simultaneously provide the following formation methods, i.e., low-temperature formation, small current formation and open formation; the formation process of the annular battery cell is delayed to the electric vehicle; and low-temperature formation, small current formation and open formation are realized on the electric vehicle. Battery cells and battery cases produced by means of the method are transported across countries and continents by air to designated locations for installation in electric vehicles before being formed.

The invention discloses double-layer air filter paper with high interface adhesion as well as a preparation method and application of the double-layer air filter paper. The air filter paper is used as a paper base, nanofiber is deposited on the surface of the paper base through electrostatic spinning to form a fiber membrane, and then drying and thermal crosslinking are performed to obtain the air filter paper. A spinning solution adopted in the electrostatic spinning is a spinning solution obtained by dissolving polyurethane in a DMF / THF mixed solvent, and a silane coupling agent is added into the spinning solution for blending. The interface adhesive force between the fiber membrane and the paper base is improved by controlling the type, the adding amount, the thermal crosslinking temperature and the thermal crosslinking time of the added silane coupling agent, the diameter of the fiber is reduced to the nanoscale by regulating and controlling the parameters of the spinning solution, the composite stability of the double-layer air filter paper is guaranteed, and meanwhile the filtering performance of the air filter base paper is improved.

The present invention belongs to the technical field of constant temperature and humidity air-conditioning units, and in particular to a bidirectional energy-saving constant temperature and humidity air-conditioning unit. In view of the problem in the prior art that the fan power will increase once the membrane cloth humidifier is turned on, the following scheme is proposed, including a unit cover with a square tubular structure placed horizontally as a whole, wherein the interior of the unit cover is fixed with a partition frame 1, a partition frame 2 and a sealing baffle with parallel and vertical plate surfaces, an air filter cloth is provided on the surface of the sealing baffle, and an evaporator module is provided in the middle of the partition frame 2, and the space between the partition frame 1 and the partition frame 2 is a humidification space. The present invention can not only allow the airflow to quickly pass through the bell mouth during ventilation and take away the water vapor on the surface of the water-absorbing membrane cloth 1 or the water-absorbing membrane cloth 2 on both sides, but also allow the airflow to quickly and easily pass through the gap between the two adjacent membrane cloths, avoiding the traditional need for pressurization and acceleration to pass through layers of membrane cloth, thereby greatly reducing wind resistance.

An air filter for an air filter assembly in an air conditioner is provided, in particular for filtering out particles, preferably pollutants, from air. The air filter contains a filter element with an electrically conductive layer. The air filter also has a housing that partially encompasses a housing interior into which the filter element is inserted. The air filter also has a terminal on the housing that can be contacted from outside the housing interior, which is made of an electrically conductive material and is connected to the conductive layer of the filter element.

The invention discloses a filter element with a self-cleaning function, and relates to the technical field of air filtration. A filter element with a self-cleaning function comprises a filter element assembly, the filter element assembly comprises a first filter element mechanism, the first filter element mechanism comprises a first filter element, and the two ends of the first filter element are fixedly connected with first element bases respectively; the filter element assembly further comprises a second filter element mechanism, the second filter element mechanism comprises a second filter element, and the two ends of the second filter element are fixedly connected with second element bases respectively. A brush mechanism is arranged between the first filter element mechanism and the second filter element mechanism and comprises a base plate, the two ends of the base plate are fixedly connected with dust storage bases respectively, the dust storage bases are filled with dust sticking glue, one side of the base plate is fixedly connected with a first bristle mechanism, and the other side of the base plate is fixedly connected with a second bristle mechanism; an air pump mechanism is arranged at the bottom of the filter element assembly; according to the filter element with the self-cleaning function, produced clean gas serves as a blowback gas source, and the protection performance of the first filter element mechanism is improved.

The invention discloses an air filtering system and method, and relates to the technical field of vehicle engineering.The air filtering system comprises an air inlet module, an air inlet flow control module, an air filtering module and a temperature detection module, and the air inlet module comprises a high-temperature air guiding pipe and a normal-temperature air guiding pipe; the normal-temperature air guide pipe is used for sucking normal-temperature air in the external environment; the high-temperature air guide pipe is used for sucking high-temperature air generated in an engine cabin; the air filtering module is used for filtering the mixed air; the filtered mixed air enters the engine; the temperature detection module is used for detecting the mixed air temperature of the mixed air; the air inlet flow control module is used for controlling the air flow proportion between the normal-temperature air and the high-temperature air sucked by the air inlet module according to the mixed air temperature so that the mixed air temperature can be within the standard temperature interval. The filtering effect of the air filtering module can be improved, the service life of the air filtering module can be prolonged, and the maintenance cost of the air filtering module is reduced.

The invention discloses a radioactive air filtering device, and relates to the technical field of radioactive gas treatment. Comprising a particle impurity removal mechanism, a spraying mechanism and an adsorption mechanism, the particle impurity removal mechanism comprises an impurity removal barrel, and an efficient air filter screen is rotationally arranged in the impurity removal barrel; the spraying mechanism comprises a washing tank, a spraying pipe is rotatably arranged in the washing tank, a plurality of spraying heads are fixedly arranged on the lower surface of the spraying pipe, a rotary movable pipe is rotatably arranged on the upper surface of the washing tank, and the bottom end of the rotary movable pipe extends into the washing tank and is fixedly connected with the upper surface of the spraying pipe. By arranging the particle impurity removal mechanism, radioactive air can be primarily filtered through a cylindrical efficient air filter screen in an impurity removal barrel, large-particle dust and impurities in the radioactive air are effectively removed, and meanwhile radioactive aerosol in the radioactive air can be captured and adsorbed through the efficient air filter screen; and preliminary filtration of radioactive gas is realized.

The utility model discloses a special-shaped air filter which comprises a shell, the shell is forwards connected with an air outlet end cover, the shell is backwards connected with a rear end cover, a filter element is arranged in the shell, an air inlet is formed in the shell, and an air outlet is formed in the air outlet end cover. The axial direction of the filter element extends in the front-back direction, a supporting cylinder used for supporting the front end of the filter element is arranged on the front end face of the shell, and the front end of the filter element is inserted into the supporting cylinder. A cavity between the filter element and the shell forms an air inlet cavity, the air inlet cavity is communicated with an air inlet, and the air inlet is in a big-end-down horn mouth shape. The filter element comprises an outer filter element and an inner filter element which are coaxially sleeved together; two groups of filter elements are arranged in the shell side by side up and down at intervals. The air inlet with the small outside and the large inside enables airflow to be better expanded to all the air inlet cavities, flow collection of all parts of the surface of the filter element is more uniform, and the situation that some parts of the filter element are blocked in advance and the overall service life of the filter element is shortened is avoided. The two groups of filter elements are arranged in parallel, so that the same air filtering capacity requirement is met, the diameters of the filter elements are reduced, and the device is more matched with an in-vehicle mounting space which is narrower in the left-right direction and higher in height.

The invention discloses an air filtering device with an impurity anti-blocking cleaning structure, and relates to the technical field of air filtering, the air filtering device comprises a filtering box, a sealing door and air inlets, one side of the filtering box is rotatably connected with the sealing door, and the air inlets are symmetrically formed in one side of the filtering box. The height of the side, abutting against the pressing ring, of the tilting rod is increased, the height of the sliding frame located in the limiting frame is reduced, the brush cylinder on the sliding frame makes contact with the surface of the filter cylinder, automatic brushing in the rotating process of the filter cylinder is achieved, brushed impurities are pumped away from the filter box in a unified mode through the sewage discharging air pump, and meanwhile the surface of the filter cylinder is automatically cleaned by adjusting the rotating speed of the motor. And the subsequent rotation speed of the motor is increased, so that the brush cylinder is separated from the surface of the filter cylinder, and the whole service life of the brush cylinder is prevented from being influenced by long-time contact with the filter cylinder.

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.

A system and methods are provided for an air filter that detects mechanical strain on the filter, due to contaminant buildup, and indicates when the filter needs to be serviced. The air filter comprises a filter medium supported within a frame and a mechanical strain detector incorporated into the frame. The frame supports the filter medium within a HVAC system, and the filter medium removes contaminants from an airstream flowing through the HVAC system. The mechanical strain detector signals when the force acting on the air filter reaches a threshold value due to contaminant buildup within the filter medium. The mechanical strain detector includes circuitry that wirelessly signals an application stored on a user's mobile device to display a notification to the user when the air filter needs to be cleaned or replaced to minimize energy consumption by the HVAC system.

An apparatus, including a controller; an air intake system located at a vehicle; an air filtration system; an environmental control system; an air tank located at the vehicle; a water harvesting system; a water filtration system; and a water storage tank located at the vehicle. The controller controls an operation of the air intake system, the air filtration system, the environmental control system, the water harvesting system, and the water filtration system. The air intake system intakes air from an external environment, and the air filtration system filters or purifies the air. The environmental control system heats the air or cools the air. The air tank stores the air and the water harvesting system harvests water from the air. The water filtration system filters or purifies the water and the water storage tank stores the water.

The utility model provides an air filtering device for a gas compressor, which comprises a gas compressor body, one end of the gas compressor body is communicated with an air inlet pipe, one end of the air inlet pipe is in flange connection with a tank body, a back flushing component is arranged in the tank body, and a fan is arranged on one side of the tank body. One end of the fan is communicated with a filter box through a pipeline, one side of the filter box is communicated with three air suction pipes through pipelines, and one ends of the air suction pipes are communicated with the outer side of the tank body. The air filtering device for the gas compressor solves the problems that when an existing device is actually used, even flow through hole plates are arranged on the two sides of filter element cotton, air is evenly dispersed through a plurality of small holes in the even flow through hole plates to be input and filtered, but the small through holes are prone to being blocked by dust and impurities, and the filtering effect is poor. The filter effect of the filter core cotton and the air inlet efficiency of the compressor are influenced, and the filter core cotton is inconvenient to disassemble and clean and is inconvenient to use.

The utility model discloses a special dust remover for a battery cathode material. The special dust remover comprises a dust remover main body, the dust remover body is provided with a first dust removal box and a second dust removal box, a first guide pipe is mounted at the upper end of the first dust removal box and extends into the bottom end of the interior of the second dust removal box, a drainage pipe is mounted on one side of the bottom end of the second dust removal box, and filler is mounted in the middle of the interior of the second dust removal box. An annular pipe is installed in the second dust removal box, a plurality of spraying heads are installed at the bottom end of the annular pipe, a second guide pipe is installed at the upper end of the annular pipe, a water pump is installed at the other end of the second guide pipe, and the water pump is installed on the upper side of the water storage box. Dust-containing gas is treated through the filtering cover, water bath dust removal and spraying dust removal, the air filtering quality and efficiency can be improved, meanwhile, materials filtered by the filtering cover can be collected and recycled through the collecting barrel, and waste of the materials is avoided.

The invention relates to the technical field of air filtering, and particularly discloses an anti-pollution air filtering device which comprises a box body, an air inlet and an air outlet, the air inlet and the air outlet are formed in the two ends of the box body respectively, the air inlet sucks air into the box body, the air outlet discharges treated air into a room, a filtering cavity is formed in the box body, and the filtering cavity is communicated with the box body. The filtering cavity is communicated with the air inlet, a filtering part is connected into the filtering cavity and used for filtering dust in air, the detection assemblies are connected into the filtering cavity, arranged at the two ends of the filtering part and used for detecting whether the wind resistance of the filtering part is increased or not, and when the difference value of the wind resistance on the two sides of the filtering part is within the standard value range, the detection assemblies are connected into the filtering cavity. The detection assembly monitors that the filtering part is in the unblocked state, when the detection assembly monitors that the difference value of the wind resistance on the two sides of the filtering part exceeds the standard range, the detection assembly detects whether the filtering part is blocked or not according to the difference value judgment value before and after the filtering part, then the filtering part can be cleaned in time, and transmission of the wind speed and the wind power is prevented from being slowed down.

The invention relates to the technical field of air conditioning equipment, and particularly discloses an energy-saving air conditioning system fan coil unit which mainly comprises a machine shell, a surface air cooler, a centrifugal fan and a driving motor. A filter cartridge is assembled at an air inlet of the volute, one end of the filter cartridge is connected with the periphery of the air inlet, the other end of the filter cartridge extends into the centrifugal impeller, and a filter area is arranged at the side part; a rotary arm is connected to an output shaft of the driving motor, a one-way transmission mechanism is arranged between the rotary arm and the driving motor, and a spiral scraper attached to the inner wall of the filter drum is fixedly arranged on the rotary arm. When the unit is in normal air supply operation, air is filtered through the filter cartridge, air streaming is avoided, a good filtering effect is achieved, dust accumulation of core components is reduced, the heat exchange and air supply efficiency of the unit is guaranteed, and energy conservation and noise reduction are achieved. And when the driving motor reversely runs, the spiral scraping blade scrapes off foreign matters adhered to the inner wall of the filter cartridge and drives the foreign matters to be discharged, so that the filter cartridge is automatically cleaned, the high efficiency of air filtration is guaranteed, and the operation and maintenance cost is greatly reduced.

The utility model belongs to the technical field of bird breeding, and relates to a multi-sensor controlled intelligent parrot brooding box which comprises a cuboid box body, a sensor box arranged on the inner side wall of the box body and opposite to a box door, a control display box arranged above the box door, and an air inlet fan arranged above the outer side wall of the box body. The switching power supply box is fixed on the inner side wall of the box body and is communicated with the air inlet fan; the ultrasonic humidifier is arranged on the side wall of the box body; wherein two ends of the sensor box are respectively provided with a sensor box air inlet hole and a sensor box air outlet hole, the built-in air filtering sponge covers the sensor box air inlet hole, and the sensor box air inlet fan is fixedly arranged at one end where the sensor box air inlet hole is located and is adjacent to the air filtering sponge; the temperature and humidity sensor and the carbon dioxide sensor are arranged on the inner wall of the sensor box; a single-chip microcomputer is arranged in the control display box, and a liquid crystal screen is arranged outside the control display box. The environment in the brooding box is intelligently controlled through the single chip microcomputer, and the growth and development and breeding production efficiency of nestlings is improved.

The invention discloses a construction dust collecting and purifying device, relates to the technical field of air filtering, and aims to solve the problems that a filtering structure cannot be adjusted according to the dust concentration in air, and when the dust concentration in the air is relatively high, the air flowing resistance is increased, and the dust concentration in the air cannot be adjusted in the prior art. In order to solve the problem that a large amount of large-particle dust in air cannot be quickly filtered in the prior art, the invention provides the following scheme that the pre-separation device comprises a pre-separation barrel and a dust collection drawer, the pre-separation barrel comprises a barrel body, a vibration ring concentric with the barrel body and a spiral elastic flow guide plate, and an adjusting mechanism is arranged in the barrel body; the adjusting mechanism comprises four electric push rods achieving synchronous action through a PLC, an extrusion cylinder with a plurality of fixing openings formed in the outer wall of the bottom and a plurality of filter screens. The spiral structure can be adjusted in real time according to the air dust concentration, vibration generated in the construction process and vibration generated during eccentric rotation can be utilized, the air flowing resistance can be prevented from being increased, and large-particle dust can be rapidly pre-separated.