469results about How to "Increase the adsorption area" patented technology

The invention discloses a micro mass sensor based on a groove-shaped cantilever beam structure, and belongs to the technical field of sensors. In the groove-shaped cantilever beam of the sensor, one end of a fixed bock is provided with 1-2 same piezoelectric films, and a test substance adsorption film covers a cantilever end; and a resonant frequency difference delta f before and after the cantilever structure adsorbs a test substance is measured, and the mass m of the test substance is calculated further. By the introduction of the groove-shaped cantilever beam, the natural frequency of vibration and the adsorption area are increased, the sensitivity of the sensor is improved, and the measuring stability of the sensor is improved. The frequency change of the sensor caused by the mass of the adsorption film can be accurately measured through the piezoelectric films, and the mass of the test substance is calculated. The sensor has the characteristics of simple structure, large adsorption area, wide mass measuring range, high stability and sensitivity and the like, and the sensitivity can be improved by 20 percent to the maximum compared with that of a rectangular-section mass sensor with the same size particularly, so the sensor can be widely applied to measuring concentrations of gases/liquids, microparticles, dust, microbes such as bacteria or viruses and the like.

The invention relates to a passive adsorbing and sampling device for detecting the concentration of a volatile contaminant in indoor air, belonging to the field of indoor environment detection. The device comprises a cylindrical adsorbent, a base, an outer cover and a rubber washer, wherein the cylindrical adsorbent is arranged on the base; the outer cover is sheathed outside the cylindrical adsorbent and is sealed with the base through the rubber washer. The device adopts a passive adsorbing and sampling mode, does not need additional power, realizes cylindrical radial adsorption and sampling, has large adsorption area and saves material utilization amount; the target contaminant is various organic volatile contaminants in indoors, and is placed in a thermo desorption tube after sampling; and the device directly uses a gas chromatography (GC) or a gas chromatography-mass spectrometry (GC-MS) with a thermal desorption (TD) or automatic thermal desorption (ATD) function to analyze the concentration of the sample, is small, exquisite and portable, can be placed in indoor to measure the average concentration of the contaminants within a certain time, and can be worn by people to measure the average exposure amount in a certain time, thus greatly reducing detection cost.

The invention relates to a chitosan nanofiber composite film for adsorbing and separating heavy metal ions and a preparation method and application thereof. The composite film is a chitosan electrospun nanofiber/non-woven fabric base composite film. The method for preparing the composite film comprises the following steps: performing electro-spinning on chitosan on a non-woven fabric base through an electrostatic spinning method, thereby obtaining a composite fiber film; and combining multiple composite fiber film layers in different manners, thereby preparing an adsorption and separation medium. The adsorption and separation medium is filled in a filter separator and can be used for dynamically adsorbing and filtering to remove heavy metal ions in water. The composite film disclosed by the invention is simple and convenient in preparation method, green, environmental-friendly, low in cost, easy to popularize and apply, high in heavy metal wastewater treatment efficiency and high in selectivity, can be used for purifying and treating heavy metals in industrial and domestic wastewater, and has important social and economical benefits.

The invention discloses a high sensitive biochemical sensor based on a resonance oscillation type micro cantilever beam structure. The biochemical sensor comprises a resonance oscillation chamber, a cantilever beam and a Whist bridge type detection circuit, wherein a micro column structure (3), a liquid storage tank (4) and a liquid leakage hole (5) through which biochemical solution flows are etched at the free end of the cantilever beam; the support end of the cantilever beam is connected with the Whist bridge type detection circuit; the Whist bridge type detection circuit is composed four U-shaped piezoresistance bars (1), three input electrodes (8, 9, 10) and two output electrodes (7, 11); and the four piezoresistance bars (1) are connected with the input electrodes (8, 9, 10) and the output electrodes (7, 11) through a signal transmission line (2). With the adoption of the biochemical sensor, micro biochemical molecules can be sensed with a high sensitivity by detecting the frequency change after an object to be tested is absorbed; biochemical molecules with micromass can be detected; and the biochemical sensor can be widely used in engineering fields such as medicine and chemistry.

The invention discloses a method for processing malodorous gas and a device thereof. Malodorous gas is introduced from a gas inlet at the bottom of a deodorization tower through a gas collecting device, an oxidizing agent is introduced from an oxidizing agent inlet at the top of the deodorization tower through an oxidizing agent supplying device simultaneously, and the malodorous gas and the oxidizing agent are contacted and reacted at a main body portion of the deodorization tower. Gas after reaction is discharged through a gas outlet, and the oxidizing agent after reaction is collected at the bottom of the deodorization tower and is introduced into an exhaust liquid processing device through an oxidizing agent outlet. By means of the method, the deodorization efficiency is high, the processed gas can reach second-level emission standards allowed by the state, and the method can be used for processing waste gas in the chemical industries.

The invention provides a connecting rod fluctuation type adsorption device applied to sudden water contamination emergency treatment. A rocker transmission device is fixed on a water floating device and fixedly connected with the top ends of connecting rods, so that the connecting rods can be fluctuate up and down by driving the rocker device; granular adsorption materials are filled in a rectangular filter bag in a half filling state; and four corners of the filter bag are respectively fixed on four connecting rods through coupler locks. According to the connecting rod fluctuation type adsorption device, convective diffusion is strengthened by fluctuating and oscillating the adsorption materials in the filter bag, so that the adsorption materials in the filter bag are fluidized to a certain extent, and a remarkably contamination removing effect can be achieved. When the device is used for removing organic matters or toxic and hazard matters such as heavy metal out of a water body, the contact opportunity of the adsorption materials in the filter bag and organic matter or toxic and hazard matters such as heavy metal can be greatly increased, the adsorption area of the whole device in water can be increased, and the content of organic matter or toxic and hazard matters such as heavy metal in the water body can be reduced in a short period.

The invention discloses aroma-enhancing puffed tobacco stem particles and a preparation method and application thereof. The preparation method of the aroma-enhancing puffed tobacco stem particles comprises the steps that a micropore structure is formed in each tobacco stem, and the tobacco stems are dried and smashed after being fixed and formed to form particles; the tobacco stem particles are inoculated with a compound aroma-generating microorganism, fermental cultivation and drying are carried out on the tobacco stem particles and the compound aroma-generating microorganism, and then the aroma-enhancing puffed tobacco stem particles can be obtained. The compound aroma-generating microorganism is formed by compounding bacillus subtilis, Trichoderma reesei, Aspergillus niger and Hansenula polymorpha according to the wet-cell mass ratio of 5:2:1:1. According to the aroma-enhancing puffed tobacco stem particles and the preparation method and application thereof, the tobacco stems serve as raw materials to be processed to obtain the puffed tobacco stem particles, then the compound aroma-generating microorganism is added, and serving as a filter material of a filter tip, the finally-obtained aroma-enhancing puffed tobacco stem particles have the advantages of being high in filter efficiency, strong in adsorption capacity, free of offensive odors and consistent with tobacco in aroma and have good application prospect.

The invention discloses a method for removing impurities such as suspended matters and colloids and the like in water by adding a modified settling agent by the action of flocculating/coagulating sedimentation, and belongs to the technical field of water supply and drainage technology and environmental protection technology. The method comprises the following steps of: soaking the settling agent of silica sand particles with the grain size of 50 to 300 meshes in 0.1 to 5 percent solution of organic macromolecular flocculant/coagulant for 0.5 minutes to 48 hours, wherein the surface of the soaked silica sand is coated with and adsorbs a layer of molecular long chains of the organic macromolecular flocculant/coagulant; putting the treated particles of settling agent into the water to be treated at proper time, and slowly stirring the mixed solution for 0.5 to 30 minutes, wherein the rotary speed is controlled to 20 to 100r/min, so that the pretreated particles of settling agent are fully contacted with the suspended matters in the sewage; and stopping stirring, standing for sedimentation for 1 to 60 minutes and performing solid-liquid separation so as to remove the suspended matters in the sewage by coagulation efficiently. The method has the advantages of high capturing capability of the settling agent, stable structure of floccules, low water content, quick settlement of floccules and good treating effect, and can obviously reduce the using amount of the flocculant/coagulant or improve the flocculation/coagulation effect.

The invention discloses a large area MEMS membrane type gas enricher, comprising a silicon substrate, a top cap and an enriching region arranged between the silicon substrate and the top cap; wherein the top cap is provided with an air inlet and an air outlet, the enriching region is composed of a plurality of enriching units, each enriching unit is provided with a hanging membrane which are provided with a film heater and an adsorption film, and a silicon frame which are arranged all around the hanging membrane. The invention not only has the advantages of small heat capacity and fast heating rate but also effectively increases absorption area and absorption gross and improves enriching rate by combining a plurality of enriching units.

The invention discloses an electrostatic adsorption type floor sweeping robot, relates to the technical field of intelligent household appliances and aims at solving the problem that an existing floor sweeping robot is relatively low in cleaning efficiency. The electrostatic adsorption type floor sweeping robot comprises a chassis, wherein a sweeping mechanism is arranged at the bottom end of the chassis and comprises a fur brush and a rubber rod which are adjacently arranged; concretely, the fur brush can rotate to sweep sundries on the ground, and the fur brush and the rubber rod can produce static through friction and adsorb sundries. The technical scheme is mainly applied to manufacturing of floor sweeping robots.

The invention relates to a heat sink wall panel for plume test, mainly consisting of a liquid nitrogen heat sink fin (1), a liquid nitrogen heat sink branch pipe (2), a liquid nitrogen heat sink branch pipe (3) and a liquid nitrogen heat sink fin (4). The liquid nitrogen heat sink is located inside the liquid nitrogen heat sink to reduce the heat load of a vacuum container to the liquid nitrogen heat sink; the liquid nitrogen heat sink directly faces to the gas in plume test ensuring high pumping speed and high plume absorption efficiency; the opening direction of the liquid nitrogen heat sink wall panel is opposite to the direction of the plume, and the plume gas can rapidly enter into the liquid nitrogen heat sink and the liquid nitrogen heat sink interlayer to reduce the plume ejection sped and improve the absorption efficiency via multiple bounce; the opening direction of the liquid nitrogen heat sink wall panel is in the plume direction and is in geometric symmetry with the opening direction of the liquid nitrogen heat sink wall panel so that the plume gas is easy to enter and difficult to come out, the capturing rate of gas is increased; gap is left between the fins so that both sides of the heat sink can absorb flume gas, thereby effectively increasing the plume absorption area; and the materials adopt stainless steel branch pipes and copper fins, thereby effectively improving the static and dynamic vacuum degree inside the vacuum container.

The invention relates to the field of automobile air conditioner equipment, and in particular relates to an automobile air conditioner filter convenient to replace. The automobile air conditioner filter convenient to replace comprises a shell and six stainless steel fasteners, wherein an air inlet is formed in the top of the shell; an air outlet is formed in the bottom of the shell; a filter core is arranged between the air inlet and the air outlet and comprises a non-woven fabric layer, an activated carbon layer and a polypeptide antibacterial layer which are sequentially laminated; the back of each stainless steel fastener is provided with a bulge; the clamping jaw parts of the stainless steel fasteners respectively wrap and clamp two side ends of the non-woven fabric layer, two side ends of the activated carbon layer, and two side ends of the polypeptide antibacterial layer; two side walls of the shell are respectively provided with three sliding chutes in a horizontal direction; and the bulge of each stainless steel fastener is in sliding connection with each sliding chute in one to one correspondence. The equipment is very convenient to operate, one or more of the non-woven fabric layer, the activated carbon layer and the polypeptide antibacterial layer can be separately replaced, each filter layer can be utilized to the maximum, and the filter cost is saved.

The invention is a kind of sealing structure of the organic electric laser element and the manufacturing craft. It uses a multi-hole drier into the sealing structure of the organic electric laser element. The drier is produced through hydraulic drier configuration, foam generating process, and solidification craft. The drier is made up of solid hardened glue with form and several drier particles or power dispersed in the glue. The glue also may contain foam generating agent. The foams in the drier can enhance the water and oxygen absorption rate and the area, enhances the absorption efficiency of water and oxygen.

A lap equipressure gas absorption filtering equipment comprises a case provided with an air inlet and an air outlet and is characterized in that the interior of the case is provided with multilayer absorption filter layers, each absorption filter layer takes a V-shape or squared root sign shape inequilateral shapes, an absorption filter channel is internally provided with a plurality of perforated plates, damping at all levels is equal. All adsorption filter layers are arranged in parallel along the up and down direction, the vertical distance between the lowest point at the upper layer and the vertex of the air outlet of the adjacent next layer is equal; the width of the perforated plate is 1/-3/4 of the distance between layers. The case can be connected in parallel, serials or simultaneously connected in series-parallel for being used. The equipment increases absorption area by arranging the multilayer absorption filter layers in the case, an short intake passage, a long absorption and filter passage, and adding a multilayer perforated plate on the absorption and filter passage, thus increasing the efficiency of decomposition, absorption and filtering; the equipment has simple and reasonable structure, small volume, low cost and good absorption and filtering effect.

The invention discloses a minitype capacitance type gas sensor, which comprises an upper electrode flat plate, a lower electrode flat plate, a plurality of struts and medium films, wherein the struts are arranged between the upper electrode flat plate and the lower electrode flat plate, so that a cavity is formed between the upper electrode flat plate and the lower electrode flat plate; and the medium films are coated on the struts and the inner surfaces of an upper electrode and a lower electrode. The minitype capacitance type gas sensor is characterized in that: (1) the medium films on adjacent struts are not in contact to each other and a reserved cavity structure forms a gas diffusion channel; and (2) an air hole is not formed on the upper electrode flat plate and side walls between the upper electrode flat plate and the lower electrode flat plate are open, so that gas enters from the side walls. The minitype capacitance type gas sensor can detect various gases to be detected with extremely-low density and has the characteristics of quick response, high sensitivity and wide detection object.

The invention discloses a CeO2 (Cerium Oxide) nano-particle/CdS (Cadmium Sulfide) nano-rod composite photo-catalyst as well as a preparation method and an application thereof. The CeO2 nano-particle/CdS nanorod composite photo-catalyst takes a CdS nano-rod of a one-dimensional structure as a substrate, CeO2 nano-particles are decorated on the surface of the CdS nano-rod. The preparation method comprises the steps of enabling sodium diethyldithiocarbamate and CdCl2.2.5H2O (Cadmium Chloride) to react to obtain cadmium diethyldithiocarbamate; then, adding a solvent to carry out solvothermal reaction to obtain the CdS nano-rod; ultrasonically dispersing the CdS nano-rod and the Ce(NO3)3.6H2O (Cerium(III) Nitrate Hexahydrate) in absolute ethyl alcohol to obtain a suspension; and dripping deionized water into the suspension to carry out solvothermal reaction by dropping. The CeO2 nano particle/CdS nanorod composite photo-catalyst provided by the invention has the advantages of high catalytic efficiency, strong resistance to corrosion, low cost and the like, thereby being applicable to dye degradation.

The invention discloses a fresh air purification all-in-one machine, which comprises a casing, an indoor air return inlet, an outdoor fresh air inlet, a fresh air supply opening, an indoor air return exhaust opening and a power supply control device, wherein the power supply control device is arranged in the casing; a primary filter, a heat exchange core body, an exhaust machine, a secondary filter, an ion cloud dust removal module, an air supply machine and a tertiary filter are sequentially arranged in the casing; the exhaust machine, the ion cloud dust removal module and the air supplying machine are respectively and electrically connected with the power supply control device. The outdoor air and the indoor air are simultaneously introduced into a purifier; the air circulation is realized; the indoor air quality is improved; in addition, the ventilation and the air purification function are integrated; the plug-and-use effect is achieved; the problems of installation and repair difficulty and house structure damage by pipelines installing are solved; the ion cloud generating device can ionize outdoor air to generate negative ions; dust is adsorbed onto a dust collecting plate after being charged. The fresh air purification all-in-one machine has the advantages that the negative ion generating quantity is great; the conveyance distance is long; the dust removal and sterilization effects are good; in addition, no ozone is generated in the work process; the environment is protected; health is realized.

The invention relates to the technical field of crystalline silicon solar cell automatic production equipment, in particular to a silicon wafer vacuum adsorption manipulator. A manipulator capable of conveying silicon wafers stably and efficiently is provided for online automatic production. The side faces of comb-shaped grooves of comb-shaped vacuum adsorption fingers are concave-convex adsorption surfaces, so that the adsorption area is increased, and the effect of preventing the silicon wafers from being broken is achieved. Through adoption of the manipulator, a plurality of silicon wafers can be stably adsorbed in vacuum, and can be accurately rotated horizontally by preset angles. Furthermore, 50 silicon wafers can be adsorbed at a time and can be rotated by 180 degrees, and 100 silicon wafers are automatically placed together back to back.

The invention relates to an edging device for desk tops, which belongs to the technical field of school desks or table processing, and includes a frame on which a lever, a cam and a ratchet are installed, and the lower surface of one end of the lever is offset against the cam. A piston is connected to the upper surface of the other end of the lever, and a support rod is connected to the lower surface of the other end of the lever; a grinding rod is hinged on the surface of the cam wheel, a chute and a grinding head are arranged on the grinding rod, and a slider is hinged on the rod, and the slider slides Cooperate in the chute; there is a pawl hinged on the support rod, the pawl is located under the grinding rod, the ratchet is coaxially connected with a support plate, the support plate is evenly connected with a clamping rod, and the end of the clamping rod is provided with a clamping plate; The piston is connected with a conduit for absorbing debris. The technical scheme not only has a good grinding effect, but also improves the processing efficiency, collects waste chips in a concentrated manner, does not affect people's work, and is ingenious in design and strong in practicability.

The invention discloses a spherical filter material which sequentially comprises a molded master ball layer, one or two or more functional adsorption layers and a porous protective layer from interior to exterior, wherein the material densities of all the layers of the spherical filter material are reduced from interior to exterior. The invention also discloses a method for preparing the spherical filter material. The spherical filter material and the method have the beneficial effects that (1) by integrating multiple odor removal functions together, the problem that a conventional odor filtering screen is single in adsorption performance or the problem of performance caused by the factor that multiple granular filter elements are non-uniformly mixed can be solved; (2) functional compounding is realized through a layer mixing mode, the densities of all the layers are reduced from interior to exterior, stable structure of the spherical filter material can be guaranteed, and different odors are removed in a layering centralized mode, so that the odor is efficiently removed; (3) due to cooperation between a pore-foaming agent and adhesive, the adsorption area and molding strength of the spherical filter material are optimized; and (4) the spherical filter material overcomes the defects that a conventional filter material is non-uniform in filling and continuous production is difficultly realized.