16results about How to "Improve retention efficiency" patented technology

The invention relates to a pressure adjusting system and method for an aerostat lighter than air. The aerostat comprises a floating body capable of being filled with light gas, the floating body is composed of at least two layers of skin, at least one middle buffer chamber is formed between the two layers of skin, and the middle buffer chamber can be filled with buffer media so as to form at least two pressure gradients between the floating body and the external atmosphere. The pressure adjusting system is provided with a first gas adjusting module and a second gas adjusting module so as to reduce the diffusion rate of the light gas towards the outside atmosphere. The pressure adjusting method comprises the steps that the first gas adjusting module is used for loading light gas into the first gas bag, and the loading process is carried out in a pressure controlled mode; the pressure of the light gas in the floating body is monitored, and the needed pressure level is maintained; when it is detected that the light gas leaks, the gas separation unit is started to separate the light gas from the mixed gas; and the separated light gas is sent back into the first gas bag or the first gas storage tank.

The invention relates to the technical field of dry-mixed mortar dust removal, and discloses a dust removal device of a dry-mixed mortar production system.The dust removal device comprises a shell, a rotating frame is fixedly connected to the inner wall of the shell, a sliding rail is rotationally connected to the outer wall of the rotating frame, and before use, a power source of an electric telescopic rod is switched on, and the electric telescopic rod regularly stretches out and draws back; when the electric telescopic rod shrinks, the bottom of the water storage tank inclines towards the left side, the water surface is not changed under the influence of gravity, and therefore the left side edge of the liquid level slides downwards along the left side of the inner wall of the water storage tank; the liquid level sliding downwards carries part of fine particles to make contact with the inner wall of the water storage tank, the viscosity of the fine particles is increased due to contact with water, when the fine particles make contact with the inner wall of the water storage tank, the high-viscosity fine particles adhere to the interior of the water storage tank, and effective interception of the fine particles is achieved through application of the components.

The utility model discloses a kind of high-temperature trona liquid decoloration after powder activated carbon filtration recovery devices, including, tank body, tank body is provided with raw liquid import, tank body inside is provided with inner convergence pipe, multiple groups of filter components are provided on inner convergence pipe, filter cloth is provided on filter component, outer tube is connected on inner convergence pipe, and clear liquid port and circulation port are respectively provided on outer tube, further include the pre-coating mechanism for providing activated carbon coating for filter cloth on filter component, pre-coating mechanism includes pre-coating jar one and pre-coating jar two.The utility model is by being provided with pre-coating mechanism, can form bottom layer skeleton on filter cloth surface first, then fill the gap with low concentration activated carbon to form dense surface layer, to effectively intercept tiny fine powder activated carbon, significantly reduce the risk of fine powder penetrating filter cloth pore, greatly improve the interception efficiency of fine powder of filtration device, guarantee the filtration effect, solve the problem of poor filtration effect caused by fine powder penetration of existing filter cloth type filtration device.

The present invention proposes an integrated flow cathode dehalogenation sewage treatment system and sewage treatment method, the system includes a screening cathode, an anode and a shell which are sequentially arranged from the inside to the outside; the interior of the screening cathode is in a cavity shape and forms a cathode chamber; there is a spacing between the screening cathode and the anode and between the anode and the shell; a plurality of movable particle electrodes are arranged in the cathode chamber, the particle electrodes undergo cathode polarization under the action of an electric field, and produce atomic hydrogen for dehalogenating halogenated organic pollutants in sewage; the screening cathode is a porous material, the screening cathode screens the sewage after the reaction, and intercepts the particle electrodes. The screening cathode of the present invention adopts a porous electrode material, and during use, the cathode has the functions of both a cathode current collector and a particle electrode sifter, which can block the particle electrodes in the cathode chamber, reducing the amount of particle electrodes used in the system as a whole.

The invention discloses an asymmetric gradient sintering composite medium as well as a preparation process and application thereof. The composite medium comprises a supporting layer, a composite layer and a separation layer for intercepting various fine substances, wherein the separation layer comprises first particles for forming a porous structure; the supporting layer comprises second particles for forming a porous structure, and the composite layer comprises first particles and second particles for forming a porous structure; the first particles and the second particles are polyethylene substances; the thickness of the composite layer is not less than 0.1 mu m, and the crystallinity of the separation layer is 40-85%; the PMI average pore size of the composite medium is 0.1-25 [mu] m, and the overall porosity is 25-75%; the whole composite medium has proper aperture and porosity, and has the composite layer with certain thickness, so that the composite medium has high composite strength while having high interception efficiency and high flux, and the separation layer and the support layer are not easy to separate during long-time work; the method is especially suitable for recycling catalysts and precious metals.

The invention relates to the technical field of landfill leachate treatment, and particularly discloses a treatment process of new pollutants in landfill leachate, which is characterized in that the pollutants in the landfill leachate are enriched and purified by using a solid phase extraction technology, and are qualitatively and quantitatively analyzed by using a high performance liquid chromatography-tandem mass spectrometry technology. Evaluating the concentration of new pollutants in the leachate; a refuse landfill is divided into a plurality of areas for leachate collection, a clean glass bottle and a proper filter are used for avoiding sample pollution, pressure, temperature data and concentration difference data of a membrane system are collected, and the pollutant interception capacity of the membrane system is evaluated by calculating a pressure factor, a temperature factor and a concentration difference factor. Marking the membrane system which is lower than the threshold value; a prediction mechanism is established, and when the performance of the membrane system tends to slide down, the membrane system is repaired or replaced in time; the pH value of inlet water is monitored in real time, and when the pH value abnormally fluctuates, adjustment is performed by adding acid or alkali, so that stable operation of a membrane system is ensured.

The application relates to a method and device for determining aerosol retention efficiency of a passive containment vessel of a nuclear power plant. The method comprises the following steps: determining a target condensation model corresponding to the passive containment vessel according to the structure type of the passive containment vessel; determining droplet radius distribution data of aerosol in a narrow gap of the passive containment vessel according to the initial droplet radius of the aerosol in the passive containment vessel, geometric size data of the narrow gap of the passive containment vessel and the target condensation model; determining gravity settling velocity distribution data corresponding to the narrow gap based on the droplet radius distribution data; and determining aerosol retention efficiency corresponding to the narrow gap based on the gravity settling velocity distribution data. The method can improve the accuracy of the calculation result of the aerosol retention efficiency.

The application provides a split-hole plate type grid cleaner and relates to the technical field of water treatment equipment, which solves the technical problems of easy clogging, low interception efficiency and grid residue leakage in the prior art. The device is a split-hole plate type grid cleaner, which comprises a grid mechanism, a plurality of alternately arranged first plates and second plates, a plurality of filter holes respectively arranged on the contact sidewalls of the first plates and the second plates, a box body composed of two symmetrically arranged box plates, a plurality of back-shaped sliding grooves respectively arranged on the opposite inner sidewalls of the two box plates, a cleaning mechanism for automatically cleaning the first plates and the second plates, a conveying system comprising a transmission conveying mechanism and a cleaning conveying mechanism, the transmission conveying mechanism is used for driving the first plates and the second plates to circularly move along the back-shaped sliding grooves, and the cleaning conveying mechanism is used for accelerating the driving of the plates when the plates reach below the cleaning device, so that the first plates and the second plates are separated, and the cleaning device can efficiently clean the surfaces of the plates.

The invention belongs to the technical field of novel separation membrane materials, and discloses an ionic covalent organic framework membrane as well as a preparation method and application thereof. An amine monomer and an aldehyde monomer are respectively dissolved in water and an organic solvent, and the continuous defect-free ionic covalent organic framework membrane is formed by in-situ growth on the surface of a carboxylated porous support base membrane through a limited interface polymerization method. And the membrane structure and the separation performance can be optimized by regulating and controlling the monomer concentration and the reaction time. The preparation process is simple, convenient and controllable, the prepared membrane is applied to pervaporation butanol-water separation, high permeability and high selectivity are shown, and good long-term operation stability is achieved. In addition, the prepared membrane can also be applied to separation of other types of alcohol-water and separation of pervaporation salt-water, and has good universality application.

The present disclosure provides a trajectory determination method, device, system and electronic device based on blockchain, which can be used in the blockchain field and the financial field, etc. The method includes: receiving a trajectory acquisition request from a client, the trajectory acquisition request includes a user identifier and a query condition, and the query condition includes at least one of the following: a time range and a geographical range; in response to the trajectory acquisition request, respectively acquiring sub-trajectory information sets matching the user identifier and the query condition from at least two blockchain networks, each sub-trajectory information in the sub-trajectory information set has a trajectory information identifier including time information; merging and sorting each sub-trajectory information in one or more sub-trajectory information sets based on the time information to obtain a trajectory information set; and sending associated information of the trajectory information set to the client, so that the client displays the associated information of the trajectory information set.

The application relates to the technical field of water treatment, and discloses an environment-friendly mine exploitation sewage treatment device, which comprises a sewage treatment tank, a flocculation assembly is arranged in the sewage treatment tank, and a sewage treatment bin is connected to the outer wall of the sewage treatment tank; a partition bin is fixedly embedded in the sewage treatment bin, metal pipes and drainage pipes are respectively embedded in the partition bin and communicate with the sewage treatment tank; a lower partition plate is also embedded in the partition bin, and a center through hole is arranged at the middle position of the lower partition plate. The environment-friendly mine exploitation sewage treatment device is provided with the partition bin, the fine particle size of the particles is greatly improved in sequence from bottom to top, the problem of electrode plate scaling of an electrochemical flocculation assembly in a subsequent sewage treatment tank is effectively avoided, and the stable operation of a deep treatment unit is ensured.

The utility model belongs to the technical field of extruders, and particularly relates to a vacuum filtering device of a screw extruder, which comprises a pipe body, an inlet end of the pipe body is connected with a first pipeline of the extruder through a first detachable structure, an outlet end of the pipe body is connected with a second pipeline of a vacuum pump water tank through a second detachable structure, and the pipe body is provided with a filtering channel and a chilled water channel. The chilled water channel is located on the peripheral side of the filtering channel, a water inlet and a water outlet which are communicated with the chilled water channel are formed in the pipe body, and chilled water is injected into the water inlet to enter the chilled water channel to cool the filtering channel; the filter channel is communicated with the first pipeline and the second pipeline, a filter mesh bag is arranged in the filter channel, and an opening of the filter mesh bag faces the first pipeline. The device effectively prevents the blockage problem of the vacuum pipeline, and ensures the normal operation of the extruder and the quality of plastic products. When cleaning or maintenance is needed, due to the fact that a detachable structure is adopted, the whole vacuum filtering device can be easily detached, and cleaning work can be conveniently and rapidly completed.

The application discloses a pickled vegetable wastewater filtering device, which comprises a filtering box body, the inside of the filtering box body is divided into a cleaning cavity and a sedimentation cavity through a partition plate. A filtering assembly is arranged on the partition plate and comprises a filtering barrel and a filtering cover with multiple layers of decreasing pore diameters. The top of the filtering barrel is limited from moving by a resisting assembly (containing a torsional spring and a torsional resisting arm). A sedimentation guide table and an openable turnover door are arranged at the bottom of the sedimentation cavity. After being filtered through multiple stages, the wastewater is guided to the sedimentation groove along an inclined surface to be deposited. The device realizes the suspension interception and pretreatment of pickled vegetable wastewater through multi-stage filtration, uniform water distribution and efficient sedimentation, and has the advantages of high filtering precision, convenient cleaning, stable structure and the like.

This invention provides a superhydrophobic mesh film loaded with superhydrophilic particles, its preparation method, and its application. The superhydrophobic mesh film comprises a mesh substrate and superhydrophilic particles loaded on the mesh substrate; the surface of the mesh substrate has a micro / nano rough structure with a roughness Ra greater than or equal to 100 nm and is modified for superhydrophobicity; the superhydrophilic particles are distributed on the surface of the mesh substrate and / or embedded in the pores of the mesh substrate, and the superhydrophilic particles include hydrophilic metal salt particles and / or hydrophilic metal-organic framework particles. This invention also provides a method for preparing the above-mentioned superhydrophobic mesh film loaded with superhydrophilic particles and its application in separating water-in-oil emulsions. The above-mentioned superhydrophobic mesh film loaded with superhydrophilic particles can efficiently trap emulsion water droplets, allowing continuous oil phase to pass through, thereby achieving water-in-oil emulsion separation.

The invention provides a split pore plate type bar screen machine, relates to the technical field of water treatment equipment, and solves the technical problems that meshes are easy to block, the interception efficiency is low and bar slag leaks in the prior art. The split pore plate type grille decontamination machine comprises a grille mechanism, a plurality of first plate sheets and second plate sheets which are alternately arranged, a plurality of filtering holes are formed in the contact side walls of the first plate sheets and the second plate sheets, and the box body is composed of two box plates which are symmetrically arranged; the opposite inner side walls of the two box plates are each provided with a concentric-square-shaped sliding groove, and the cleaning mechanism is used for automatically cleaning the first plate piece and the second plate piece. The conveying system comprises a transmission conveying mechanism and a cleaning conveying mechanism; the transmission conveying mechanism is used for driving the first plate sheet and the second plate sheet to circularly move along the concentric-square-shaped sliding groove; the cleaning and conveying mechanism is used for accelerating driving of the plate sheets when the plate sheets reach the position below the cleaning device, so that the first plate sheets are separated from the second plate sheets, and the cleaning device can efficiently clean the surfaces of the plate sheets.

The invention belongs to the technical field of powder press-drying filtering, and discloses a powder grading press-drying filtering machine which comprises a press-drying machine and further comprises a first press-filtering module movably arranged in an inner cavity of the press-drying machine, and the periphery of the first press-filtering module is in interference fit with the inner wall of the press-drying machine; the filter pressing module II is movably arranged in the drying press, and the periphery of the filter pressing module II is in interference fit with the inner wall of the drying press; the liquid filtering mechanism is arranged in the drying press and is positioned below the filter pressing module II; wherein an extrusion filtering chamber aiming at a solid-liquid mixture is formed between the filter pressing module I and the filter pressing module II, the liquid filtering mechanism comprises a plurality of uniformly distributed filter cartridges communicated with the external environment, and through holes slidably sleeved with the filter cartridges are formed in the filter pressing module II; by arranging the elastic film and the piston block, a filter cake can be extruded again more easily in a small-area range, water in the filter cake is further discharged outwards, and compared with a traditional microplate filter press, the dryness is improved.