249 results about "Absorption filter" patented technology

A filter assembly for use in sidestream gas sampling assembly. The filter assembly of the present invention includes a hydrophilic The filter further includes a hydrophobic member positioned downstream of the hydrophilic liner. The hydrophobic disk acts as a second line of defense against moisture reaching the sensing mechanism member that is constructed from a porous material and is situated such that gas entering the filter assembly passes through at least a portion the hydrophilic member. In a further embodiment, the filter includes a hydrophobic member positioned downstream of the hydrophilic member. The hydrophobic member acts as a second line of defense against moisture reaching the sensing mechanism in the gas sampling assembly.

A selective absorption filtering structure comprises a substrate, a dielectric micro-nano unit located on the substrate and a metal layer located on the dielectric micro-nano unit. The metal layer totally covers the dielectric micro-nano unit, namely, the metal layer covers the ridge portion, the slot portion and the side wall of the dielectric micro-nano unit. The imaginary part of the dielectric constant of the metal layer needs to be larger than the absolute value of the real part of the dielectric constant. The filtering structure has relatively high absorption efficiency and is not sensitive to the angle and the polarization state of incident light. Meanwhile, manufacturing process is simple and easy to achieve. The structure can be applied to a solar cell to capture more energy and can provide a solution for achieving black in non-ink printing, and a traditional concept that black printing can be achieved only by means of pigments is changed.

Disclosed is a hybrid Infrared Ray (IR) cut-off filter for a digital camera, which includes an absorption filter plate for absorbing infrared rays, a reflection coating layer formed on a top or bottom side of the absorption filter plate so as to reflect infrared rays, and an anti-reflection coating layer formed on the top or bottom side of the absorption filter plate opposite the reflection coating layer, so as to allow visible rays to pass through the anti-reflection coating layer. The hybrid IR cut-off filter can provide an excellent IR cut-off function even in a slim digital camera module. Also, the hybrid IR cut-off filter can prevent the image quality from being degraded due to the IR transmittance difference according to the change in the incidence angle of an incident light, thereby overcoming the problem of color difference according to the color temperature.

A strong acid pretreatment assisted cellulose nano-filament preparation method includes: performing hydrolysis pretreatment for bleached paper pulp fibers for 1.0-1.5 hours at the temperature of 40-60 DEG C by the aid of 60-70wt% of concentrated sulfuric acid or hydrochloric acid, swelling up, dissolving and opening partial cellulose amorphous regions, and performing high-speed homogenizing mechanical shearing so that cellulose nano-filaments are obtained rapidly. The cellulose nano-filaments obtained by the method are low in energy consumption during production, high in fiber crystallization degree, large in filament length-diameter ratio and good in heat stability, and can be widely applied to the fields of reinforced composites, dust absorption filtering materials, ecological environment-friendly materials, biomedical materials and the like.

The fluorescence microscope comprises: a fixed-type objective lens placed between a filter set and a specimen loading portion; a partition that covers at least the specimen loading portion, the objective lens and the filter set to block extraneous light incident on the specimen loading portion; an imaging lens arranged on the outgoing surface of the absorption filter of the filter set, the imaging lens including a zoom lens capable of continuously changing the operation distance; and an imaging portion forms a fluorescent image from a fluorescence emitted from the specimen and received by the imaging lens via the absorption filter by irradiating an excitation light onto the specimen from the excitation light source via the excitation filter of the filter set and. This configuration avoids damage to the specimen or lens surface while allowing high-contrast fluorescence observation with reduced effect of extraneous light.

The invention relates to a preparation method of a cigarette absorption type flavor compensation material, which belongs to the technical field of cigarette auxiliary materials, in particular to an absorption filter material added in cigarette filters and the preparation method for realizing the functions of flavor enhancement and moisture retention of the material. The preparation method comprises the following steps: a) selecting materials: selecting cellulose acetate with water content of above 4%; b) mixing a dissolving agent with a moisture retention agent according to the proportion, adding onto the cellulose acetate, uniformly stirring, hermetically storing for 1-12h under normal temperature and normal pressure, and obtaining cellulose acetate solution; c) adding an appropriate amount of porous absorption filler and surface material into the cellulose acetate solution prepared in b), uniformly mixing, preparing a soft material which can be gripped into a group and be scattered by light touch, and hermetically preserving for 1-12h; and d) preparing the soft material prepared in the step c) into pellets of 20-60 meshes, quickly drying and obtaining an absorption type base material. The cigarette absorption type flavor compensation material prepared by the preparation method of the cigarette absorption type flavor compensation material can directly transfer characteristic flavor, moisture and pharmacological active ingredients of plant material into smoke.

A composite adsorptive filter material containing porous aerogel is prepared through proportionally mixing ethyl n-silicate, alcohol, water and HF, stirring, laying aside to obtain wet SiO2 gel, immersing the wet SiO2 gel and fibers or fabric in the solution mixture of trimethyl chlorosilane and n-hexane for modifying, and heat treating at 100-200 deg.C.

The invention discloses an attapulgite ceramic mud with an air purifying function. The technical scheme is characterized in that the attapulgite ceramic mud with the air purifying function consists of pasty attapulgite clay, an attapulgite constant humidity conditioner, a natural ore absorption filtering agent, biota tops, alumina silicate fiber, polyacrylamide and water. The preparation method comprises the following steps: mixing ingredients and stirring them; then feeding the mixture to a ball mill, and carrying out wet ball milling; carrying out staleness processing on the slurry subjected to ball milling so as to form a semi-product; and extruding the semi-product into a blocky substance and packaging the semi-product to form a finished product which has the advantages of better adhesion, plasticity, fire resistance and thermal stability. A pottery prepared by using the attapulgite ceramic mud with the air purifying function contains a large amount of micropores and activated carbon, has the characteristics of small contractibility rate, no crack, no deformation and good absorption property, and can effectively absorb harmful substances, such as formaldehyde, ammonia, benzene and the like, in air, be environmental-friendly and promote human health. The attapulgite ceramic mud is suitable for producing the ceramic artware with the air purifying function.

The invention relates to a fully closed circuit-pendulum-storage system wherein a given amount of a ready to breathe gas mixture made of various inert gases including hydrogen and oxygen is continuously conveyed between two highly pressurized gas containers. Initially, the required breathing gas leaves the pressurized gas container and reaches the circuit at a constant dosage according to the overdosing principle. The circuit consists of an inhalation bag, a diving helmet, an exhalation bag and a single or double pack CO₂ absorption filter. At a depth of 0-100 m a mixture of oxygen, nitrogen and helium is used as a breathing gas. At a depth of 100-700 m a given amount of hydrogen is mixed therewith according to the wishes of the diver, whereby the oxygen content should not exceed 3 vol. %. When the diver emerges from a depth of over 100 m, the hydrogen is removed from the breathing gas and from the circuit by means of palladium membrane diffusion or catalytic water conversion. The removal of hydrogen is controlled by hydrogen detectors. At this point only, the oxygen content can exceed 3 vol %.

The related renewable energy feedback interconnected circuit comprises: the input dc, a power unit with an absorption filter and level circuit in turns all paralleled between positive and negative bus-bar, an equalizing inductance, and the output ac. This invention can improve running efficiency, reduces cost, and has high power factor fit to wide application.

The invention discloses an eco-brick manufacturing system and an eco-brick manufacturing method, belongs to the technical field of building materials manufacture. The invention aims at solving a problem that the production cost of the eco-brick is high. The eco-brick manufacturing system provided by the invention is mainly characterized by comprising: a rack arranged on a mobile vehicle; a crushing device arranged on the rack and configured to pulverize construction waste; a screening device arranged at a discharging port of the crushing device; a magnetic absorption filter member arranged onthe rack and close to the discharging port of the screening device; a batching device arranged at a discharging end of the magnetic absorption filter member; and a forming device arranged at a discharging end of the batching device and configured to extrude the brick-manufacturing raw materials prepared in the batching device into the eco-brick. Therefore, the purposes of recycling the construction waste and reducing the production cost of the eco-brick can be achieved.

The invention provides a composite curtain wall for efficiently intercepting pollutants in a farmland surface source. The composite curtain wall is characterized in that a surface plant buffer zone, a plant protection slope, a water collection zone and an anti-pollution curtain wall are arranged in sequence along the direction from a farmland drain outlet to a field drain ditch; the water collection zone is lower than the surface plant buffer zone and the anti-pollution curtain wall in height; the anti-pollution curtain wall is formed by gravel, filled soil or the combination of the gravel and the filled soil, and the shape of the cross section of the anti-pollution curtain wall is trapezoid. According to the composite curtain wall provided by the invention, the pollutants discharged by the farmland can be intercepted and purified through plant absorption and physical absorption filter, the nitrogen and phosphorus pollutants in the farmland surface source can be effectively prevented from entering water body such as a river, and the composite curtain wall has good ecological benefit and the popularization and application value.

The invention relates to an air conditioner purification sterilizer, which includes a main unit and a cabinet unit of a spilt cabinet air conditioner. In the cabinet unit are mounted a condenser and a fan. In the upper part of the cabinet unit casing there is an air outlet window and in the lower part there is an air inlet window. In the front of the cabinet unit there is a control panel. The fan is corresponding with the air inlet window. Between the above of the fan and the air outlet window are disposed an electrostatic dust collector and an absorption filter one by one.

The invention discloses a method for removing the toxicity of tail water of fine chemical biochemical treatment, belonging to the field of sewage treatment methods. The method comprises the following treatment steps: (a) carrying out catalytic ozonation, specifically, treating sewage in a catalytic ozonation tower which is internally filled with an iron-aluminum catalyst, wherein the iron-aluminum catalyst is prepared from the following effective components: beta-iron oxyhydroxide and aluminum oxide; (b) absorbing, specifically, carrying out further treatment on wastewater, subjected to treatment in the step (a), by using an absorption filter filled with ceramsites and magnetic resin, wherein the mass ratio of the beta-iron oxyhydroxide to the aluminum oxide in the iron-aluminum catalyst is equal to (15-20) to (80-85), and the volume ratio of the ceramsites to the magnetic resin is equal to (2-3) to (3-5). The method provided by the invention is simple to operate and low in cost, and not only can realize the non-toxic emission of the tail water, but also can improve the comprehensive index of water quality.

Apparatus for treating run-off water, the apparatus including a mechanical-sorption filter for removing particulate and colloidal material; an ion exchange filter for removing positively charged ions; and, a sorption filter for removing at least other soluble contaminants.