722results about How to "HEPA filter" patented technology

The invention provides a system and method comprising an apparatus for removing contaminants from a gas in a semiconductor processing device, which can include a filter unit having at least two parallel filter stages located therein. The filter stages are designed to remove a least a portion of the contaminants present in the gas flowing through them. The apparatus can also include a flow controller for distributing the gas flow among the filter stages. In one embodiment, the controller may consist of a diffuser plate. The invention also provides a sampling tube orifice for gas flow control in a system or method of the invention. In another embodiment, an apparatus for removing contaminants from a gas in a clean room comprises a filter unit having at least two parallel filter stages, which are used to remove a portion of the contaminants in the gas as it passes through the apparatus.

A thermally bonded filtration media that can be used in high temperature conditions in the absence of any loss of fiber through thermal effects or mechanical impact on the fiber components is disclosed. The filter media can be manufactured and used in a filter unit or structure, can be placed in a stream of removable fluid, and can remove a particulate load from the mobile stream at an increased temperature range. The combination of bi-component fiber, other filter media fiber, and other filtration additives provides an improved filtration media having unique properties in high temperature, high performance applications.

Automatic capture and population of task and list items in an electronic task or list surface via voice or audio input through an audio recording-capable mobile computing device is provided. A voice or audio task or list item may be captured for entry into a task application interface or into a list authoring surface interface for subsequent use as task items, reminders, to do items, list items, agenda items, work organization outlines, and the like. Captured voice or audio content may be transcribed locally or remotely, and transcribed content may be populated into a task or list authoring surface user interface that may be displayed on the capturing device (e.g., mobile telephone), or that may be stored remotely and subsequently displayed in association with a number of applications on a number of different computing devices.

A method for filtering garbage information of Internet animation media based on contents in the fields of image processing and mode identification is disclosed, comprising the steps: 1, collecting at random a plurality of advertisement or non-advertisement animations from the Internet as training sample set, and extracting colour characteristics, texture characteristics, character information characteristics, animation length characteristics, animation geometric size characteristics and animation dynamic characteristics of all the animations; 2, inputting six characteristics of animations and type indexing into a support vector machine which obtains a model of the support vector machine describing the difference between advertisement and non-advertisement animation media; 3, according to the method for extracting the animation characteristics in the step 1, extracting six characteristics of animations to be tested and inputting into the model of the support vector machine so that the support vector machine is able to judge the animation belongs to either the advertisement animation or the non-advertisement animation. The invention can identify the advertisement animation or the non-advertisement animation as well as have high processing speed and identification accuracy.

The invention discloses a method and a system for converting text into video. The method includes: inputting text information expressed in a scene expressed in a natural language; filtering the videodata set; matching the filtered candidate video segments with the input scene descriptions, and outputting the video segments with high matching degree; describing Video segments with high matching degree by using an encoder and a decoder; selecting and comparing the similarity between the text description of the selected video segment and the text description of the scene expressed by the naturallanguage, and outputting a set of key frames of the input text of the scene whose content accords with the natural language expression; identifying and extracting objects in a key frame set to generate an object set; according to the scene map and the object set, finally generating the key frames, and generating the video. A video retrieval method based on natural language processing greatly reduces the ambiguity of description compared with keywords, so that the system can filter more efficiently and find matching video.

The invention relates to a system and method to filter the wasted mails on internet. At present there is a lot of wasted mails, human use keywords to filter it, build black name list, and set regulation to prevent, but the result is unobvious, hard to maintain, high requirement for professional skill. The invention consists of hardware, software which is installed on hardware and supported network, the software includes Linux operating system, analyzing engine for wasted mails, extended black name list, internet library and management interface. The periphery supporting network includes complain device for wasted mails, analyzing system for wasted mails, which can work as transparent gateway before LAN or mail sever, take over MX interface to work before mail sever. The method includes the hardware connection, telnet management, management of wasted mails and anti-waste setting, and the operation is convenient, easy to maintain, high identifying rate, high stability, low misjudgment rate, and plug and play.

The invention relates to an intelligent adjusting system for air quality in a large-scale commercial building and an adjusting method of the intelligent adjusting system. The intelligent adjusting system is characterized by comprising a fresh air inlet, a fresh air channel, a fresh air chamber, a return air inlet, a return air channel, a return air chamber, a heat exchanger and a controller which are mounted in a shell. The adjusting method comprises the following steps: 1) setting a preset value; 2) calculating an air quality deviation value I; 3) dividing I value section and establishing the solenoid valve openings corresponding to different sections.

The invention relates to a rubbish short message identification system based on the position of the calling number and transmitted content and a method thereof, comprising: judging whether the amount of the transmitted short message having the same content reaches a first threshold, if true, counting the occurrence number of the position information of the calling number on the transmitted short message with the same content subsequent; judging the short message with the same content as the rubbish short message, if the sum of the occurrence number of the position information of all calling number of the short message with the same content reaches a second threshold, or if the sum of the occurrence number of the position information of any calling number of the short message with the same content reaches a third threshold; transmitting the calling number of the rubbish short message to a short message center, for filtering the rubbish short message for the short message center. The invention ensures that a great deal of short messages received by the short message center are filtered, sorted and processed in real time and high efficiency, and performs real time interception on the rubbish short message.

The invention discloses a scene retrieval method based on geographical position information. The scene retrieval method based on the geographical position information comprises the following steps that firstly, the geographic information and an overall situation descriptor of a scene image are retrieved in the retrieval process, and a space four-fork tree retrieval structure is structured; secondly, a similar image set is determined in a hierarchy verification mode in the inquiring process, and the information of the scene image to be inquired is obtained through the information of similar images in a vote mode. The overall situation descriptor is structured through the following steps that firstly, local characteristic points of the scene image are extracted, and the scene image is expressed into a set of the local characteristics; secondly, descriptors of the local characteristic points are quantized according to a visual vocabulary dictionary, and corresponding visual vocabularies are obtained; thirdly, the extracted visual vocabularies are collected and projected to a random projection matrix to obtain the overall situation descriptor of the scene image. By means of the scene retrieval method based on the geographical position information, many irrelevant images are efficiently filtered out, and the efficiency of spatial verification of the visual vocabularies and the accuracy rate of image matching are improved.

The invention relates to a planar mask for efficiently filtering PM 2.5. The planar mask comprises a mask body used for covering the mouth and the nose of a wearer. A pair of ear hooking portions are formed on the two sides of the mask body in an extending mode and used for being hooked on the ears of the wearer. The mask body is of a three-layer structure in a stacked mode, and the three-layer structure comprises a polypropylene fiber spunbonded non-woven fabric outer layer, a superfine fiber electret melt-blown non-woven fabric middle layer and a polypropylene fiber spunbonded non-woven fabric inner layer in sequence from outside to inside. The weight per unit area of the superfine fiber electret melt-blown non-woven fabric middle layer is 20-60g / m<2>. The planar mask for efficiently filtering the PM 2.5 has the advantages of being high in filtration rate and low in choked flow, has prominent obstruction and capturing capability for the PM 2.5 and is good in breathability, low in weight, comfortable to wear and high in PM 2.5 filtering efficiency in high level. The filtering efficiency can reach up to more than 99%, the weight is low, and breathability and comfortable sensation of the mask are ensured at the same time.

The invention relates to the technical field of tunnel dust removing, in particular to an efficient dust removing system suitable for tunnel construction and a using method. The efficient dust removing system comprises five parts of a universal induced draft device, a dust filtering chamber, a dust removing exhaust fan, a power system and an operating platform. The universal induced draft device comprises a movable air suction hood, a ranging radar, a dust concentration sensor, a steel wire filter screen, a universal transmission device, a corrugated hose and a supporting frame. The dust filter chamber comprises a fan-shaped filter screen, a rotating control device, a filter screen cleaning chamber and a dust ash bucket. The dust removing exhaust fan is connected with the dust filtering chamber, provides power of air flow of the dust removing system, and receives a feedback signal of the dust concentration sensor to adjust power intelligently. The power system supplies power required by the universal induced draft device, the dust filtering chamber, the dust removing exhaust fan and the operating platform. The operating platform can control the universal induced draft device and dust filtering operation to complete dust suction and filtering work, and receives an early warning signal of the ranging radar.

The present invention provides a supported nanometer compound oxide environmental purification material and the preparation thereof, the diatomite and the zeolite are employed as carrier to load one of nanometer TiO2, nanometer ZnO and nanometer CeO2. The preparation method comprises preparing carriers by diatomite and zeolite; preparing compound oxide precursory sol by employing ethanol as medium and the zinc nitrate and / or cerium nitrate and butyl titanate as material; loading the compound oxid precursory sol on the carrier to obtain loading-body; drying, baking and cooling the loading-body to obtain the supported nanometer compound oxide environmental purification material of the present invention which has perfect filter, adsorption, ion exchange, catalytic degradation and antibacterial function, good chemical stability, convenient usage, reclaim and regeneration, safety, innocuity, simple preparation technique and low cost. The supported nanometer compound oxid environmental purification material of the present invention is suitable for batch production and used widely in purifying process of atmosphere and water system.

The invention relates to a PM2.5C type mouth mask efficient in filtering. The mouth mask comprises a mouth mask body, and the two sides of the mouth mask body extend out to form a pair of portions hung on ears. The mouth mask body comprises a left mouth and nose piece portion, a right mouth and nose piece portion, a left nose bridge piece portion, a right nose bridge piece portion, a left jaw piece portion and a right jaw piece portion, wherein the edge of the left nose bridge piece portion and the edge of the right nose bridge piece portion are combined, the mouth mask body is of a three-layer structure to form a laminated shape, and the weight of a middle layer made of ultra-fine electret melt-blown fiber non-woven cloth per unit area is 20-60g / m2. The PM2.5C type mouth mask efficient in filtering integrates air permeability, weight, wearing comfort and PM2.5 filtering efficiency of a mouth mask at a high level. The PM2.5 filtering efficiency of the mouth mask can reach more than 99% at most, the mouth mask is low in weight, and air permeability and comfort of the mouth mask are guaranteed at the same time. Water mist is prevented from being generated on lenses, warm air is prevented from accumulating on the inner side of the mouth mask, and bacteria are prevented from growing.

A integrated biomass thermocracking equipment for preparing liquid fuel is composed of cyclone separator, carbon filter, multi-stage condensing system consisting of two air coolers, two heat-transfer oil heaters and three condensers, self-heating system consisting of two air coolers, carbon burner and heat exchanger of reactor, combined feeder, and cross-section variable fluidized-bed reactor. Its advantages are flash temp-rasing of biomass, fast eduction out of volatile components and recovering solid carbon.

The invention relates to a filter element, in particular to a filter element for filtration and a manufacturing method thereof. In the preparation process of the filter element, various raw materials are weighed according to percentage by weight in a formula, adding materials according to specified steps and then mixing and stirring evenly, extruding or punching for shaping in a preset mould, drying the water in the model at a certain temperature for sizing, namely forming the porous filter element with specified shape. The filter element of the invention utilizes various non-toxic and harmless raw materials with absorption characteristics, is formed by bonding water-borne adhesive, has the characteristics that the usage of a filter material in unit volume is large, the adsorption efficiency is high, the finished filter element after adsorption and saturation can regenerate under the condition of high temperature while the original physicochemical property of the filter element is not changed, the surface of the filter element after being jammed by absorbing and stopping sundries can be polished by sand paper and reused, and the like; in addition, the cost for manufacturing the water-borne adhesive is low and the raw materials are safe and environmental friendly.

The invention discloses an irrigation and drainage integrated device suitable for a high underground water level. The irrigation and drainage integrated device comprises a set of underground irrigation pipelines, an underground water conveying pipeline, a water storage pool body, a water inlet pipe, a water outlet pipe, a water pump and two automatic control valves of the water pump, wherein one end of each underground irrigation pipeline is connected with the underground water conveying pipeline; a water permeable film is mounted at the other end of each underground irrigation pipeline; the underground water conveying pipeline is connected with the water inlet pipe; the water inlet pipe is connected with the water storage pool body; the first automatic control valve is mounted on the water inlet pipe; one end of the water outlet pipe is connected with one side of the water inlet pipe; the other end of the water outlet pipe is connected with the water storage pool body; and the water pump and the second automatic control valve are respectively mounted on the water outlet pipe. According to the irrigation and drainage integrated device, redundant underground water can be drained under higher underground water level of farmland and is stored in the water storage pool body, and infiltrating irrigation is carried out through the underground irrigation pipelines under lower underground water level, so that the irrigation and drainage functions are achieved, the water resources are saved and high and stable yield of crops can be facilitated.

The invention relates to a method and a system for real-time embedded software test result data analysis. The method comprises: a step of loading test result data, which is to call a database operation function to load the test result data to a mySOL database and display the test result data in rows in a list view according to variables; a step of analyzing test result data in a list form based on a list view function; a step of analyzing test result data in a curve drawing form based on a curve display function; a step of reading test result data in real time, completing dynamic playback of the test process and reproducing the test process based on a test process playback function; and a step of generating an exrensible markup language (XML)-based test result analysis report.

The invention relates to a self-cleaning type industrial vacuum cleaner. The self-cleaning industrial vacuum cleaner comprises a base frame, a mounting rack, a dust collecting barrel, a dedusting barrel, an upper cover, air inlet tubes, an exhaust tube, a vacuum pump case body and an electric control box. The self-cleaning type industrial vacuum cleaner is characterized by comprising a cyclone type draught fan, efficient filters and a self-cleaning mechanism, the cyclone type draught fan is arranged in the position, flush with a suction port, in the dedusting barrel, the efficient filters which are transversely arranged are evenly distributed at the upper end of the cyclone type draught fan in the dedusting barrel, one air inlet tube connected with the self-cleaning mechanism is arranged at the right upper end of each efficient filter, and the self-cleaning mechanism is communicated with the interior of the vacuum pump body through a connecting barrel on the self-cleaning mechanism. The self-cleaning type industrial vacuum cleaner has the advantages of being scientific and reasonable in structural design, good in dedusting effect, capable of prolonging the service life of the machine, saving labor force and reducing the labor intensity, high in cleaning efficiency and the like, and the self-cleaning type industrial vacuum cleaner has high innovativeness.

A flow passage for passing a raw liquid to be processed therethrough that is used to test a separation membrane is of the simplest inline type (so-called “inline” type) and is the simplest in construction. In spite thereof, the separation membrane through which the raw liquid is going to be filtered is mounted in a direction substantially perpendicular to the flow passage. In view of this, the object of the present invention is to provide a filtering device with high filtering efficiency, which is used to test the membrane performance of this separation membrane and which enables exchanging its membrane in an easily removably attachable and quick way. The simplified type filtering device that includes a bowl 1 having a discharging port 13 on one side thereof and having on the other side thereof an opening portion 2 in which the separation membrane is loaded, the separation membrane for filtering the raw liquid therethrough, a filter plate 5 by which this separation membrane is fixed to the bowl 1 and which has opening portions for passing the raw liquid or a filtered liquid therethrough, a head 3 having on one side thereof a convex pressing portion 23 that presses the filter plate 5 from one side to prevent the filtered liquid from being leaked and having on the other side thereof a raw liquid supplying opening 15, and means that fastens the head 3 onto the bowl 1 so that the head may be pressed against the bowl 1, such as female and male screws 19, 21 provided with respect to the head 3 and the bowl 1 and screw-engaged with each other, or a separate locking nut 33.

The invention relates to a pure-cotton-gauze based sterile dustproof mask and a producing method thereof. A mask body consists of the pure cotton gauze, a PLA (poly lactic acid) electrostatic spinning nano-fiber film, ramie needle-punched nonwoven fabric and PLA melt-blown nonwoven fabric which are laminated sequentially from inside to outside in an ultrasonic bonding manner, wherein the pure cotton gauze is of one or two layers. The producing method includes production of 2.5g / m<2> PLA electrostatic spinning nano-fiber film and production of ramie needle-punched nonwoven fabric. The mask of the layer structure has the characteristic of guiding water from inside to outside in one way, dryness and comfort of the inside of the mask can be kept, and bacterium breeding is prevented. Therefore, the mask is sterile, capable of filtering dust effectively, and has the advantages of low production, good breathability and capability of being biodegraded completely.

The invention relates to a simple mask for efficiently filtering PM2.5. The simple mask comprises a mask body which is used for covering the mouth and the nose of a wearer. A pair of ear hooking parts used for being hooked to the ears of the wearer is arranged on two sides of the mask body in an extending mode. The mask body is in a three-layer structure and forms a stacked shape, and the three-layer structure sequentially comprises an outer polypropylene spun-bonded non-woven layer, a middle superfine-electret melt-blown fiber non-woven layer and an inner polypropylene spun-bonded non-woven layer. When the mask is worn, the inner polypropylene spun-bonded non-woven layer faces to the wearer. Small breathing holes are respectively distributed in the outer polypropylene spun-bonded non-woven layer and the inner polypropylene spun-bonded non-woven layer and penetrate through the outer polypropylene spun-bonded non-woven layer and the inner polypropylene spun-bonded non-woven layer, and the hole diameters of the small breathing holes are 0.3-0.6mm. The invention further provides a manufacturing method of the mask. The simple mask has the characteristics of high filtering and low flow resistance and has prominent blocking and capturing capabilities for PM2.5 air particles.

The invention provides a system and method comprising an apparatus for removing contaminants from a gas in a semiconductor processing device, which can include a filter unit having at least two parallel filter stages located therein. The filter stages are designed to remove a least a portion of the contaminants present in the gas flowing through them. The apparatus can also include a flow controller for distributing the gas flow among the filter stages. In one embodiment, the controller may consist of a diffuser plate. The invention also provides a sampling tube orifice for gas flow control in a system or method of the invention. In another embodiment, an apparatus for removing contaminants from a gas in a clean room comprises a filter unit having at least two parallel filter stages, which are used to remove a portion of the contaminants in the gas as it passes through the apparatus.

The invention discloses a port area ship target change detecting method based on remote sensing images and belongs to the field of target detection. The method comprises steps of: firstly obtaining two remote sensing images of the same port at different time phases; secondly, registering the two remote sensing images of the same port area acquired at different time; then, using a template image to perform mask operation on the two images, shielding a land area to obtain a sea area, homogenizing sea area image sea colors, and filling the shielded land area with a sea area mean value; making subtraction of the two registered images, and segmenting the subtracted image; finally, extracting the image feature of a slice, removing false alarm, determining the changed ship slices in the slices so as to obtain the changed ship target positions and corresponding information of the two remote sensing images. The method can accurately and quickly eliminate the influence of the cloud and the changed sea background on a final result, reduces a false alarm rate, completely and accurately segments and detects changed ship targets, and improves a detection rate.

The invention discloses a gravel filtering device for coastal engineering construction. The gravel filtering device for the coastal engineering construction comprises an impurity storing box and a washing and filtering mechanism, and further comprises a gravel guiding mechanism, wherein gravel is stirred and washed through the washing and filtering mechanism, small particles existing in the graveland soil attached to the surface of the gravel can effectively enter the impurity storing box through sieve gaps in the bottom of a filter cylinder, meanwhile, a scraping block is attached to a rotating rod, the scraping block can stir the rotating rod to rotate in a stirring process, impurities are effectively prevented from blocking in the sieve gaps, in the filtering process, a push-pull dooron the impurity storing box can be opened at any time to discharge the impurities in the impurity storing box, meanwhile, dust generated in the filtering process of the gravel can be effectively reduced, after a cover plate is opened, the gravel can be discharged from a discharging opening through a discharging plate on a stirring pipe, a gravel guiding mechanism is arranged, the gravel dischargedfrom the filter cylinder can be directly conveyed to a conveying device conveniently, and a baffle is arranged on a conveying belt, so that the conveying efficiency of the gravel guiding mechanism isimproved.

The invention discloses a centrifugal adsorption filter device for cooling liquid. The centrifugal adsorption filter device comprises a lathe base; the lathe base is internally provided with a filterbox, a water pump cavity, a connection cavity, and a motor cavity; and a liquid leakage slope is arranged below a rail seat, a filter screen is arranged at the bottom of the liquid leakage slope, thecenter position of the filter box is provided with an adsorption roller, the side wall of the adsorption roller is provided with water leakage holes and magnets, the bottom of the adsorption roller isfixedly provided with a rotating rod, a driving pulley of the rotating rod is connected with a motor pulley of a driving motor through a belt, the front side of the filter box is provided with a maintenance access and a water blocking plate, the bottom end of a water pumping pipe extends into the bottom of the filter box, the water pumping pipe is connected with the water pumping end of a water pump through a water blocking plug, the water pump is arranged on the inner bottom surface of a water pump cavity, the water draining end of the water pump is connected to a liquid supply pipe, and thetop end of the liquid supply pipe is fixed on a tool holder. The adsorption roller with the built-in magnets is used for greatly improving the adsorption efficiency of metal impurity inside the cooling liquid.

The invention discloses a cooling and anti-condensation system for an outdoor ring network cabinet and a control method thereof, belonging to the technical field of the ring network cabinet. The invention relates to a cooling and anti-condensation system used in an outdoor ring network cabinet and a control method thereof. Through the reasonable arrangement of the inlet and outlet air outlets of the ring-net cabinet, after the pressurization treatment of two blowers with different air inlet directions, the two air currents blown in by the fan intersect in the ring network cabinet. The hot airin the cabinet can be quickly discharged at the upper and lower air outlets to realize the rapid cooling and dehumidification in the ring network cabinet, and meanwhile, the dew point temperature of the air in the ring network cabinet can be reduced to achieve the purpose of anti-condensation in the switch cabinet, so that the air in the ring network cabinet can be dissipated mutually and the airin the ring network cabinet can be dissipated quickly. The continuous pressurization of the fan can make the air pressure in the annular network cabinet appear positive pressure with respect to the atmosphere, so that the air at the gap between the bottom of the annular network cabinet and the cable well can only flow from the top to the bottom, and the humid air from the sealed cable well is prevented from entering the annular network cabinet, thereby achieving the functions of dehumidification and condensation prevention.

The invention relates to a method for a storage event log to automatically filter repeated jitter data. The method comprises the steps: setting two layers of filtering, screening a normal event log record through a first layer of filtering when a record (the event log record) which waits to be analyzed from a message queue, sending the normal event log record into a buffer memory, and saving the time of comparison one by one; and enabling remaining records after the first layer of filtering to abandon the jitter data through a second layer of filtering, reducing redundancy of the data, and sending an event log record filtered through the second layer of filtering to a nonvolatile storage medium, wherein the remaining records are taken out from the massage queue and wait to be analyzed. After a period of preset time, the data in the record buffer memory are sequentially stored into corresponding storage areas according to types. According to the method, in the analysis stage of the formed event log, an effective jitter data filter algorithm is added, a traditional data ergodic comparison algorithm is abandoned, the jitter data are efficiently filtered, and redundant data are reduced.

A network flow filtering system and method based on a field programmable gate array (FPGA) belongs to the field of network application. The method includes first utilizing a heredity K-means algorithm to conduct off-line practice on network historical flow to generate a flow classification knowledge base, utilizing the heredity K-means algorithm to recognize and distinguish flow classes online by combining the flow classification knowledge base and determining whether the flow is required to be filtered according to a recognition result. The recognition method based on the heredity K-means solves the problem of low accuracy in recognition of novel application protocol flow of a traditional method. The online recognition and the filtering process are achieved based on the FPGA technology. An online recognition and filtering internet protocol (IP) core operating in the FPGA can process network data packages in real time, extracts characteristic attributes of each flow, calculates and recognizes the flow class in real time and filters the flow in real time according to the recognition result. The system and method has good real-time performance and cannot obviously affect effective bandwidth of the network in the implementation process.

A system for providing electronic filtering and enhancement for audio broadcasts and voice conferences. The system can comprise one or more computing devices configured to record one or more spoken segments, wherein the one or more spoken segments are comprised of utterances. The system can also include one or more electronic data processors configured to process, manage, and store the one or more spoken segments and data, wherein the at least one electronic data processor is communicatively linked to the one or more computing devices. The system can further include a speech-to-text module configured to execute on the one or more electronic data processors, wherein the speech-to-text module converts the one or more spoken segments into a plurality of text segments. Additionally, the system can include a database module configured to execute on the one or more electronic data processors, wherein the database module stores the plurality of text segments in a queue. The system can also include a filtration-prioritization module configured to execute on the one or more electronic data processors, wherein the filtration-prioritization module is configured to filter one or more text segments of the plurality of text segments in the queue, wherein the utterances to be filtered arc defined in advance of filtering. The filtration-prioritization module can also be configured to determine a relevance of the one or more text segments. The filtration-prioritization module can be further configured to prioritize the one or more text segments based upon one or more of the relevance and a similarity of the one or more text segments to other text segments of the plurality of text segments in the queue. Moreover, the filtration-prioritization module can be configured to transmit the one or more text segments to a presenter.

The invention provides a preparation method of a novel high-efficiency haze filtration silver nanowire net and MOFs (metal-organic frameworks) composite porous fiber film material. The preparation method is characterized by comprising the following steps of preparation of silver nanowires, preparation of MOFs, preparation of a spinning precursor solution, preparation of a spinning solution, electrostatic spinning, preparation of suction filtration dispersing liquid and suction filtration and filming. The preparation method has the benefits that the preparation method of the novel high-efficiency haze filtration silver nanowire net and MOFs composite porous fiber film material prepares a composite fiber film by using the silver nanowires in certain diameters and the MOFs in certain particlesizes for doping; pore sizes of the fiber film formed by the spinning are used for filtration; at the same time, lower voltage is applied; particulates are collected by a remote electrostatic force of the silver nanowire; an filtration effect is improved; and since the silver nanowires have a sterilization function, the composite porous fiber film material can achieve a multifunctional haze filtration effect.