84results about How to "Significant impact" patented technology

A lens driver or lens driver circuitry for an ophthalmic apparatus comprising an electronic system which actuates a variable-focus optic is disclosed herein. The lens driver is part of an electronic system incorporated into the ophthalmic apparatus. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The lens driver circuitry includes one or more power sources, one or more high voltage generators and one or more switching circuits.

The invention belongs to the field of machine learning, and discloses an urban rail transit passenger flow volume prediction method based on A-LSTM. The method relates to three parts of time feature extraction, spatial feature extraction and prediction algorithm design. Wherein the time characteristics are mainly characterized in that clustering analysis is carried out on the week factors througha hierarchical clustering method, and relationships among the weeks are searched; Wherein the spatial characteristics refer to passenger flow distribution characteristics of different subway stations,and the spatial passenger flow distribution relation is searched by analyzing the different stations; The prediction algorithm is mainly based on an improved LSTM neural network, and an attention mechanism is added, so that the LSTM network pays more attention to input characteristics with greater influence on prediction by a model, and passenger flow data can be predicted more accurately.

The invention discloses a variable weight-based method for evaluating service performance of a shield tunnel. The method comprises the steps of obtaining monitoring and detection data necessary for evaluation according to a service performance evaluation index system of the shield tunnel; obtaining an initial weight of an index by adopting a confidence index-based expert investigation and survey method; performing variable weight adjustment on the initial weight according to index data; evaluating a structure unit based on a fuzzy comprehensive judgment method; and comprehensively judging an overall service performance level of the tunnel according to a unit structure evaluation level. The service performance of the shield tunnel is subjected to dynamic comprehensive evaluation by utilizing a variable weight method. The value for evaluating the weight of the index not only fully considers knowledge and experience of experts but also can be used to dynamically adjust related weights in time according to actual tunnel conditions, and the influence of a key deterioration index on a final service performance level of the tunnel is highlighted.

The invention discloses a coal-bed gas-content calculation method including: selecting a series of coal-core samples of a tested area; measuring a corresponding maximum vitrinite reflectivity Rmax of each coal-core sample and a well log value of each of corresponding well sections of the coal-core samples; establishing a relationship between the maximum vitrinite reflectivities Rmax and coal-bed gas-content parameters R; and establishing a calculation formula of the coal-bed gas content Vgas according to the well log values and the coal-bed gas-content parameters R. Through introduction of the vitrinite reflectivity, the coal-bed gas-content calculation method takes an effect of coal rank on the coal-bed gas content into full consideration so that the calculated coal-bed gas content complies with an actual geological condition in a better way. And at the same time, the coal-bed gas content is convenient to obtain and low in cost because of being capable of being obtained only based on the well logging information and the vitrinite reflectivity. Moreover, coal-bed gas content of continuous well sections can be obtained so that application effect is good.

The invention belongs to the technical field of a high-grade refractory matter for metallurgy, coloring, glass and cement kilns, and preparation thereof, and particularly relates to a modified high-purity magnesium aluminate spinel composite brick and a preparation method thereof. Aggregate is prepared from the following raw materials in parts by weight: 65 to 80 parts of high-purity magnesia and 15 to 35 parts of high-purity magnesium aluminate spinel; powder materials are prepared from the following raw materials in parts by weight: 1 to 5 parts of fused magnesia powder, 1 to 5 parts of fused magnesia-alumina spinel, 1 to 3 parts of fused magnesia-alumina spinel micro powder, 1 to 3 parts of desilicication zirconia, 1 to 3 parts of titanium oxide, 0.1 to 0.5 part of sintering agents, 1 to 3 parts of active aluminum oxide micro powder and 3 to 4 parts of combining agents. The modified high-purity magnesium aluminate spinel composite brick has the advantages that the purity is high; the density is great; the strength is high; the high-temperature thermal shock stability is good; the corrosion resistant performance is high; the molten metal resistant and antioxidation capability is high; no harmful gas is exhausted; green refractory material standards are conformed. The preparation method is simple; the cost is low; no carbon and no chrome are discharged; no pollution occurs; practical applicability is realized.

The invention discloses a multi-tug cooperative open caisson floating transportation manipulation simulation control method. The method is in allusion to that scale parameters of a pipe section are very special, the floating transportation process is affected by multiple factors such as channel conditions, the floating transportation distance, the hydrology, the meteorology and the like, and difficulties of heavy water transportation and cooperative towing of multiple tugs are required to be overcome at the same time. According to the invention, the whole process of immersed pipe floating transportation manipulated and towed in a cooperative mode by six tugs under different wind, wave and flow sea conditions is simulated through continuously changing the towing power and the position of the tugs, stress analysis is carried out on the towing force for the immersed pipe every time when the position of the immersed pipe is changed, the manipulating modes of different tugs are adjusted, the single and total tug stresses and a resultant force received by the immersed pipe are calculated, moving postures of the immersed pipe are displayed in an immersed pipe floating transportation towing system, and curves of the cycle time, the track belt width, the tug service power and the like are acquired. The method disclosed by the invention can realize selection and tests for channels, steering areas, foundation trench towing modes and turning modes of each tug, evaluates the controllability, gives an advice on the size of a steering water area and the towing cable length, and judges whether configuration of the tugs is reasonable or not.

A lens driver or lens driver circuitry for an ophthalmic apparatus comprising an electronic system which actuates a variable-focus optic is disclosed herein. The lens driver is part of an electronic system incorporated into the ophthalmic apparatus. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The lens driver circuitry includes one or more power sources, one or more high voltage generators and one or more switching circuits.

The invention discloses a fluency assessment method and apparatus, and belongs to the technical field of computers. The method comprises the steps of obtaining minimum fluency in each time segment of a predetermined duration; performing interval division on the predetermined duration by utilizing the obtained minimum fluency, wherein each interval comprises at least one time segment; calculating a fluency score of each interval according to the value of the minimum fluency and the length of each interval; and calculating a total fluency score in the predetermined duration according to a predetermined mode based on the calculated fluency score of each interval. According to the method and the apparatus, the problem that an invalid frame rate obtained in a static time segment of an application cannot measure the fluency of drawing the application by the mobile terminal when the fluency of drawing the application by the mobile terminal is measured through the frame rate in related technologies is solved; and the effect of reflecting a jamming degree in the predetermined duration more really during measurement of jamming in the predetermined duration by utilizing the total fluency score in the predetermined duration is achieved.

A system controller for an ophthalmic lens comprising an electronic system which actuates a variable-focus optic is disclosed herein. The system controller is part of an electronic system incorporated into the ophthalmic lens. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The controller including multiple state machines configured as digital logic gates.

The invention discloses a terminal side time-domain video quality evaluation method and apparatus. The method comprises: calculating the remarkable motion area proportion of each video frame, each remarkable motion area proportion referring to the proportion which a remarkable changing area between two neighboring video frames takes up in one video frame area; according to the remarkable motion area proportions, dividing all the video frames into absolute common frames and suspected distortion frames; performing freeze frame detection, scene conversion frame detection, jitter frame detection and ghosting artifact frame detection on the suspected distortion frames; and according to scene conversion frame detection results, performing scene segmentation on a video, calculating the scene information weight of each scene, calculating distortion coefficients according to freeze frame detection results, jitter frame detection results and ghosting artifact frame detection results, and determining terminal side time-domain video quality according to the remarkable motion area proportions, the scene information weights and the distortion coefficients.

A graphic processing unit having multiple computational elements flexibly interconnected to memory elements provides for data compressors / decompressors in the memory channels communicating between the computational elements and memory elements to provide an effective increase in bandwidth of those connections by the compression of data transferred thereon.

The invention discloses a frame-aeration cooling anchor pipe structure for keeping a frozen soil slope stable and a construction method. The frame-aeration cooling anchor pipe structure is composed of a cross beam (1), an upright (2), a protective cover (7), an aeration anchor pipe (8) and gravels (18). The aeration anchor pipe (8) is composed of an aeration pipe (9) for aeration, and an anchor pipe (10) which is arranged in the aeration pipe (9) and used for pressure grouting and anchoring. In the use of the frame-aeration cooling anchor pipe structure for keeping the frozen soil slope stable, convective heat exchange is aroused between air in the aeration pipe and air in the gravel layer under the action of temperature difference, so that heat in the slope body is exchanged into atmosphere; in addition, cold air enters a freeze thawing layer through the aeration pipe under the action of wind to reduce the temperature of the slope body; as a result, soil pressure transferred to the frame by freeze thawing collapse is reduced; the frame is anchored in the well-frozen stable stratum by the anchor pipe. The frame is connected with the aeration anchor pipe to form a space structure, and the frame and the aeration anchor pipe work integrally to improve the overall stability of the slope, and therefore, the frame-aeration cooling anchor pipe structure is applicable to prevention and treatment of slope instability in a freeze soil area; moreover, the construction process is simple, and the construction cost is low.

The invention discloses a water permeable brick for a sponge city. The water permeable brick comprises a hollow brick body. A water inlet is formed in the upper end of the brick body in a penetratingmanner, two symmetrically formed lifting grooves are formed in the inner wall of the brick body, a partition plate leans against the bottoms of the two lifting grooves jointly, two ends of the partition plate are hermetically and slidably connected to the inner walls of the two lifting grooves, separately, a plurality of columns are fixed to the upper end of the partition plate, a chute is formedin the upper end of each column, and an air bag is fixed to the inner bottom of each chute. The water permeable brick has the advantages that rainwater entering the brick body through the water inletdoes not directly permeate into an underwater channel as being blocked by the partition plate but is stored in the brick body in advance, so that the rainwater can be stored to a certain extent, and therefore, accumulated water is supplied to air conveniently after rain stop, and the comfort level of the urban environment is improved; a water flow enters into a water outlet tank when too much accumulated water exits and is further drained to the underwater channel through a water falling pipe, so that normal drainage of the city is guaranteed.

The invention discloses a special-purpose emulsifying thickener for paraquat preparation and an application method thereof. The invention has the technical scheme that a special-purpose emulsifying thickener for paraquat preparation is prepared by the following components in percentage by weight: 30%-40% of sodium alcohol ether sulphate, 1%-2% of dispersing agent, 10%-20% of CHSB, 2%-4% of alkyl polysaccharide glycoside (APG), 10%-15% of antifreeze and balance of water. Paraquat preparation with the thickness being 12%, 15% and 20% respectively can be prepared by adding the emulsifying thickener of the invention. The emulsifying thickener of the invention almost can adapt to all paraquat mother liquid and cannot obviously become thick at 0 DEG C and cannot obviously become thin at 40 DEG C. The emulsifying thickener can furthest keep the appearance wall cling performance of a product, and thus, the influence range of the system stable temperature is enlarged by one time; moreover, the influence on preparation products is increased by emulsifier, which ensures that the function of the emulsifier can be exerted to limit.

The invention discloses a chip multilayer ceramic capacitor dielectric ceramic slurry and preparation method of a dielectric, and belongs to the field of ceramic dielectric materials. The main component of the ceramic slurry provided by the invention is barium titanate, and also comprises a burning supporting agent, wherein the burning supporting agent comprises water glass and silicon dioxide, wherein the mass ratio of water glass to barium titanate is 1%-10%, and the mass ratio of silicon dioxide to barium titanate is 0.8%-1.2%. The preparation method of the dielectric comprises the following steps: 1) selecting a set quantity of the main component barium titanate, as well as the burning supporting agent, a diluent, a dispersion agent and a bonding agent A, and putting them into a ball milling machine for ball milling; 2) carrying out ball milling for a set period of time, then adding a set quantity of a bonding agent B in slurry after ball milling, and carrying out ball milling continuously; and 3) carrying out plate coating and sintering on the obtained slurry after ball milling for a set time, thereby obtaining the dielectric material. According to the invention, the energy consumption is reduced from all aspects greatly, and an MLCC (multiplayer ceramic chip capacitor) produced by the method is low in production cost and has good energy storage effect.

The invention provides a parallel operation flow anomaly detection method oriented to a data model, and the method comprises the following steps: 1) carrying out division on an operation flow through structural validation, and distributing nodes in the same branch under the same gateway into a block; 2) establishing a data manipulation algebra system on a data manipulation set, and establishing a task data existence matrix according to the data manipulation algebra system, wherein each line of the matrix is a data existence state vector corresponding to each task in a procedural model, and each row of the matrix is corresponding to a data object in the data model; 3) based on the task state matrix, carrying out detection on the operation of the data through the task and the anomaly of the operation flow through the existence state of the data. The parallel operation flow anomaly detection method can be used for efficiently processing the procedural model containing a plurality of parallel branches, and the operation flow anomaly detection efficiency is high.

The invention belongs to the technical field of biological extraction, and discloses a process method for extracting tannin from dioscorea cirrhosa lour. The process method comprises: crushing dioscorea cirrhosa lour, adding acetone, heating, carrying out ultrasonic extracting, cooling, filtering to obtain a tannin extraction liquid, purifying, and separating to obtain tannin. According to the present invention, on the basis of the single factor experiment, the response surface method optimization design is performed to obtain the influence degree of various factors on the dioscorea cirrhosa lour tannin extraction rate, wherein the influence degree sequentially is the temperature, the acetone volume fraction and the time from high to low; in the extraction process, the temperature is preferentially determined; the optimal extraction process conditions comprise that the dioscorea cirrhosa lour particle size is 60 mesh, the ratio of the material to the liquid is 1:10, the acetone volume fraction is 74%, the ultrasonic power is 240 W, the extraction time is 31 min, and the extraction temperature is 54 DEG C, wherein the experiment results show that the tannin content determined under the conditions is 32.27%; with the method, the extraction time is shortened, the extraction rate is increased, and the development and the application of the dioscorea cirrhosa lour are easily achieved.

The invention provides a specific valuation cost accounting method orienting to a steel producing and progressing enterprise. The specific valuation cost accounting method orienting to the steel producing and progressing enterprise is applied to an industry and trade integrated system. The method comprises the steps of: classifying according to resource numbers, and according to the resource numbers, determining cost of stock finished goods generated in correspondence; distinguishing resource attributes in an inventory purchasing process, wherein the resource attributes comprises a trade attribute and a progressing attribute, trade resources are classified into a 'stock goods' subject, and progressing resources are classified into a 'raw material' subject; carrying out corresponding fund transferring when the resource attribute changes after the purchase; and transferring from the 'stock goods' subject to the 'raw material' subject if the resource attribute changes from the trade resource to the processing resource. According to the invention, the cost are collected according to the resource numbers, the influence of the recent market condition variation to the profit of a company is accurately reflected in real time, so that a decision-making level is enabled to rapidly take effective measures to deal with the market adjustment, the practical profit is reflected more reasonably and accurately under the condition of a relatively large market fluctuation range, and the stock is closer to the market value.

The invention relates to the technical field of detection of crops, and in particular relates to a dry hot air environment simulating and monitoring device for crops. The device comprises a crops growing control chamber, a lighting simulating unit, a hot air generating unit, a crop damage state monitoring unit, a dry hot air influence inhibition unit and a processing control unit; the hot air generating unit is used for charging dry hot air into the crop growing control chamber to simulate the generation of the dry hot air of the crops; the crops damage state monitoring unit can detect the indoor temperature, humidity, air speed, lighting temperature, soil temperature, water content in soil, crop leaf temperature and other growth environment indicators of the crops and transmitting to the processing control unit on real time so as to monitor the degree of influence of the dry hot air on the crops on real time; the processing control unit can control the dry hot air influence inhibition unit to work according to the crops growth environment indicator information so as to reduce or inhibit adverse influence of the dry hot air on the crops as well as effectively preventing the influence of the dry hot air.

The invention discloses a time-domain signal processing method for through casing differential resistivity logging. The time-domain signal processing method comprises the steps that transient electromagnetic induction received waveforms at four moments of forward turn-on, forward turn-off, reverse turn-on and reverse turn-off are obtained; the transient electromagnetic induction received waveformsat the adjacent depth points subtract to obtain the responding difference waveform 1, the responding difference waveform 2 and the responding difference waveform 3; the responding difference at the coupling position is replaced through the responding difference at the adjacent depth points, so that the coupling influence is removed; the maximum values of the responding difference waveform 1, theresponding difference waveform 2 and the responding difference waveform 3 at the four moments are selected, and the maximum values are converted to stratum conductivity difference curves; the stratumconductivity difference curve at any moment in any responding difference waveform is selected and integrated to obtain a stratum conductivity curve of the measured well section; the same method is applied to other moments of the responding difference waveforms to generate the stratum conductivity curve of the corresponding well section; the time-domain signal processing method is applied to the four moments of the other two responding difference waveforms to generate the stratum conductivity curve of the corresponding well section; and all the stratum conductivity curves are weighted and added, and the reciprocal value is taken to obtain the stratum conductivity curve.

The invention provides a hollow microsphere and a preparation method thereof, and belongs to the field of polymer functional materials. The method comprises the steps of: mixing 0-100 parts by mass of an airtight monomer, 10-100 parts by mass of an acrylate monomer, 0-50 parts by mass of an amide monomer, 10-100 parts by mass of an olefin monomer, 0-10 parts by mass of an initiator, 0-10 parts by mass of a cross-linking agent and 20-60 parts by mass of a core material, and stirring the mixture in an oil phase kettle of 0-15Mpa to prepare an oil phase; sequentially adding 100 parts by mass of deionized water, 0.5-10 parts by mass of an inorganic dispersant, 0.5-50 parts by mass of an inorganic salt, 0.01-5 parts by mass of a surfactant, 0.01-5 parts by mass of a thickening agent and 0.01-5 parts by mass of a molecular weight regulator into a water phase kettle according to the proportion, and uniformly stirring the substances at normal pressure to prepare a water phase; fully stirring the oil phase and the water phase respectively, transferring the oil phase and the water phase into a homogenizing kettle according to a proportion of 1:1-10 to be homogenized for 0.5-1h, and selecting a homogenizing rotating speed of 500-10000rpm / min; and after the homogenization is finished, performing heating to 50-60DEG C, carrying out reaction for 24h, carrying out suction filtration on the homogenized reaction liquid, and drying a filter cake to obtain the hollow microsphere.

A system controller for an ophthalmic lens comprising an electronic system which actuates a variable-focus optic is disclosed herein. The system controller is part of an electronic system incorporated into the ophthalmic lens. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The controller including multiple state machines configured as digital logic gates.

The invention relates to a non-metal doped low-temperature SCR catalyst which separately comprises the following components in percentage by weight: 84-86wt% of a carrier titanium dioxide, active ingredients: 2-5wt% of vanadium pentoxide and 3-5wt% of ceric oxide, 5-7wt% of an auxiliary agent tungsten trioxide and doped elements: 0.4-2wt% of fluorine and 0.4-2wt% of sulfur. The invention also provides a preparation method of the catalyst. By doping non-metal elements fluorine and sulfur into the SCR catalyst, the low-temperature activity of the catalyst can be improved, so that a denitration device can be directly mounted behind a dust collector for a low-temperature denitration catalyst, or even behind a desulfurizing device, so that on the one hand, the catalyst poisoning probability isreduced and the service life is prolonged, and on the other hand, the flue gas repeated heating step is reduced, so that the cost is lowered.

The invention discloses a method for suppressing sub-synchronous resonance of doubly-fed wind turbine based on phase-shift average of rotor current, A small-signal model of doubly-fed wind turbine grid-connected system is established, Through eigenvalue analysis, the system parameters which have the most significant influence on the SSR mode and the main participating factors of the SSR oscillation mode are determined, On the basis of obtaining the frequency information of SSR subsynchronous component of rotor current, the subsynchronous component of rotor current can be reduced rapidly by adding the reference current to the inner ring of rotor through phase-shift transformation, so that the SSR of the system can be suppressed rapidly. The invention can rapidly reduce the sub-synchronous component of the rotor current, so as to rapidly suppress the system SSR.

The invention relates to an anticorrosive application of a thermal spraying technology on electricity-generating members of a wind-driven generator. A zinc-aluminum alloy material is sprayed on the electricity-generating members of a wind-driven generator through a thermal spraying technology so as to form an anticorrosive layer. Compared to the prior art, an anticorrosive layer is formed by spraying a zinc-aluminum alloy material on the electricity-generating members of a wind-driven generator through a thermal spraying technology, and the anticorrosive layer protects the iron steel substrate on the basis of the oxygen gas insulation theory and the sacrificial anode protection theory. The thermal spraying technology adopts a zinc-aluminum alloy material as the spraying material, and the zinc-aluminum alloy material has the advantages of low cost, simple preparation technology, and good anticorrosive performance. A film is formed on the electricity-generating members of a wind-driven generator through a thermal spraying method so as to effectively alleviate the corrosion.

The invention provides a method for producing fused magnesite by virtue of a high-power electric arc furnace. Magnesite ore or a magnesite powder pellet is put into the electric arc furnace to smelt, so as to obtain fused magnesite, wherein the neck ratio of the furnace body of the electric arc furnace is 0.8-1.2; the power of the electric arc furnace is greater than or equal to 3000KVA; the feeding mode of the magnesite ore or the magnesite powder pellet is electric arc furnace edge feeding assisted with electric arc furnace top feeding; and the electric arc furnace electrode lifting adopts lifting-descending alternating method. The method for producing the fused magnesite by virtue of the high-power electric arc furnace provided by the invention has the advantages of simple and scientific steps, high yield and low energy consumption. The invention also discloses optimal raw ore granularity, material distribution mode and feeding depth, therefore, carbon dioxide gas generated in the smelting process can be timely eliminated, and ejecting from the furnace is avoided.

The invention relates to a method of utilizing V5+ to extract and gather a vanadium-containing solution. The method includes: adjusting pH value of vanadium-containing material leaching stoste to below 7 to generate precipitate or floccule; adding an oxidizing agent while stirring for reaction, wherein when a reaction solution gradually becomes crineous, vanadium ions in the reaction solution are oxidized into V5+; filtering the reaction solution, wherein obtained filtrate is extraction stoste; adjusting pH value of the extraction stoste to below 7, adopting an extraction organic phase with a pH value equal to the pH value of the extraction stoste to perform countercurrent extraction on V5+ in the extraction stoste to obtain an organic phase rich in V5+ and extraction residual water, subjecting the organic phase rich in V5+ to reverse extraction through a stripping agent solution to obtain reverse water rich in V5+, and storing the reverse water to obtain the vanadium-containing solution extracted and gathered by utilizing V5+. Valent state of V5+ is utilized to extract, purify and gather the vanadium-containing solution, so that the valent state does not need to be changed repeatedly, and vanadium recovery rate is high.

A lens driver or lens driver circuitry for an ophthalmic apparatus comprising an electronic system which actuates a variable-focus optic is disclosed herein. The lens driver is part of an electronic system incorporated into the ophthalmic apparatus. The electronic system includes one or more batteries or other power sources, power management circuitry, one or more sensors, clock generation circuitry, control algorithms and circuitry, and lens driver circuitry. The lens driver circuitry includes one or more power sources, one or more high voltage generators and one or more switching circuits. Specifically, the lens driver comprises an H-bridge / H-bridge controller for providing the proper voltage, including polarity, to drive the electronic included in the ophthalmic apparatus.

The invention provides an image fuzziness evaluation method and device. The image fuzziness evaluation method comprises the steps: obtaining a to-be-evaluated image, and converting the to-be-evaluatedimage into a grayscale image; calculating a directed gradient amplitude of each pixel point of the gray level image, and obtaining a gradient amplitude matrix of the gray level image; obtaining a gradient amplitude domain of the gradient amplitude matrix according to the gradient amplitude matrix; counting the number of pixels with the amplitude of zero in the gradient amplitude matrix, obtainingthe ratio of the number of pixels with the amplitude of zero to the number of pixels corresponding to the whole gradient amplitude matrix, and taking the ratio as a zero gradient ratio; obtaining anevaluation score for evaluating the ambiguity of the to-be-evaluated image according to the gradient amplitude domain and the zero gradient ratio; and comparing the evaluation score with a set threshold, and when the evaluation score is greater than the set threshold, determining that the to-be-evaluated image is a clear image. According to the technical scheme, the image recognition accuracy is improved, and the recognition safety is ensured.

The invention belongs to the fiber manufacturing industry, and discloses an oil fume blowing and collecting device for a fiber drawing tower. The device comprises a blowing device and an oil collecting device arranged on the upper part of the blowing device, a fiber passage is formed in the blowing device, a clearance serving as a gas passage is reserved between the fiber passage and the blowing device, the outer surface of the blowing device is provided with an air inlet hole, and the air inlet hole is communicated with the gas passage. The device can effectively reduce oil fume attached to the surface during fiber production, meanwhile collects the oil fume for centralized treatment, and produces good influence on the environment.