18361results about "Filtration separation" patented technology

Systems and methods are described herein relating to an intracardiac blood pump system comprising a pump, an elongate multi-lumen catheter, a compartment connected to the catheter, a first lumen, a conduit and a filter disposed within the conduit. At least one electronic element is located within the compartment. The conduit extends through an interface between the compartment and the catheter. The conduit is configured to allow gas to penetrate from a first end of the conduit through the first opening of the compartment to a second end of the conduit. The second end of the conduit is in fluid communication with a central lumen of the elongate multi-lumen catheter. The filter is configured to prevent egress of liquid from the multi-lumen catheter into the compartment after allowing flow of gas from the first end of the conduit through the second end of the conduit and into the multi-lumen catheter.

The invention provides a liquid inlet automatic backwashing control method and system for a filter station, and relates to the technical field of backwashing control, and the method comprises the following steps: interactively obtaining liquid characteristic parameters and filtration requirement parameters of a to-be-filtered liquid; filtering medium matching is carried out, after filtering medium type selection is obtained, filtering element configuration of a filtering station is carried out, and a target filtering element is obtained; target structure features are obtained, filtering condition initialization is carried out, and initial filtering control constraints are output; the initial filtering control constraint is used as an optimization condition, liquid inlet preparation speed optimization is executed, and the liquid inlet control speed is positioned; carrying out blockage trend analysis, and executing backwashing control optimization to obtain backwashing control parameters; and carrying out intermittent automatic backwashing by adopting the backwashing control parameters. According to the invention, the technical problem of resource waste or influence on the filtering effect caused by backwashing when the filtering element is not completely blocked or is severely blocked because the backwashing control in the prior art is usually carried out at a fixed time or a preset period is solved.

The invention provides a plate-and-frame filter press, and belongs to the technical field of plate-and-frame filter presses. Comprising a filter press body, the driving assembly has reciprocating displacement along the length direction of the filter press body; the scraper assembly is connected to the filter press body in a sliding manner; the scraper assembly at least comprises a scraper; an included angle a is formed between the scraper and the gravity direction; the included angle a is increased or decreased according to the weight b of the filter cake; the moving distance L of the previous plate frame driven by the driving assembly is increased or decreased under the control of the weight b of the filter cake. The included angle of the scraping plates is adjusted according to the weight of a filter cake, smooth stripping of the filter cake is ensured, particularly, the filter cake with high water content and high weight can be scraped cleanly, residues are avoided, and abrasion of equipment is reduced by reducing unnecessary displacement distance and reducing friction between the guide rail and the plate frame.

The invention relates to the technical field of oil filter control, in particular to an oil filter digital intelligent control system based on sensors, which comprises a fusion monitoring unit, an oil temperature control unit and a feedback regulation unit. The oil temperature control unit calculates the optimal heating rate and the target temperature range through a self-adaptive algorithm according to the environment and the initial temperature of oil, compares the optimal heating rate and the target temperature range with the actual oil temperature in the heating process, adjusts the heating power through pulse heating according to the result, judges the working load according to the specific heat capacity of oil and adjusts the frequency of a vacuum pump. And the feedback regulation unit evaluates the system stability based on the target operation frequency and the heating power of the vacuum pump, generates an optimization strategy and feeds back the optimization strategy to the oil temperature control unit, so that accurate oil temperature control is realized, the equipment stability and the energy utilization efficiency are improved, and efficient operation of the oil filter is guaranteed.

A pair of waveform rotors and / or disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side.

A system and method in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through an intake chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. In at least one embodiment, the waveform patterns include a plurality of hyperbolic waveforms axially aligned around a horizontal center of the system.

A pair of waveform disks for use in a disk-pack turbine used, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid into an expansion chamber and then through at least a portion of a waveform pattern present between at least two disks. The disks having waveform patterns on at least one side.

A disk-pack turbine for use, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through a fluid intake chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side.

The invention discloses a water quality monitoring device for water treatment, and belongs to the technical field of water quality monitoring, the water quality monitoring device comprises a main shell, and a plurality of stabilizing assemblies are arranged on the peripheral side of the main shell. According to the water quality monitoring device, by arranging the stabilizing assembly, the stability of the main shell on the water surface is improved, so that the main shell can stably float on the water surface at a fixed point and is prevented from moving along with water flow, and the accuracy and stability of water quality monitoring data are improved; a driving motor drives a stabilizing anchor to move upwards through a driving gear, a transmission gear, a linkage gear, a first connecting shaft, a first bevel gear, a second bevel gear, a second connecting shaft, a winding wheel and a cable, an electric push rod drives a sealing plug to be separated from an air leakage pipe, air in a floating air bag is discharged through the air leakage pipe, and then a propelling device is started to drive a main shell to move. The main shell drives the water monitor to move, so that the detection range of the water quality monitor is enlarged, and the monitoring efficiency of the water treatment tank is improved.

The invention belongs to the technical field of material preparation. The invention provides a porous tantalum carbide ceramic as well as a preparation method and application thereof, the preparation method comprises the following steps: mixing tantalum powder and / or tantalum carbide powder with tantalum salt and an organic ligand source in a liquid phase system, rapidly cooling to form a solid, vacuumizing and sintering the obtained solid, and carbonizing to obtain the porous tantalum carbide ceramic. According to the preparation method, an organic ligand source provides a ligand, so that the ligand and tantalum form a metal organic framework structure, pores and distribution are adjusted, pore forming is realized through further decomposition or volatilization at a high temperature, and finally, the prepared porous silicon carbide ceramic has disordered micron-sized pores, and when the porous silicon carbide ceramic is applied to preparation of single crystal silicon carbide through a physical vapor deposition method, the pore forming efficiency is improved. Compared with a traditional graphite material, the graphite material can allow gaseous substances generated by silicon carbide to pass through, is resistant to high temperature and high in strength, does not participate in reaction, does not generate impurities entering crystals or forming carbon wrapping and the like, and effectively achieves the filtering effect.

The invention relates to the technical field of high polymer materials and preparation thereof, and discloses a wet anti-slip bionic friction pad on a glass surface, which is inspired by a micro-nano structure of toe pads of organisms such as tree frogs and long-horned grasshoppers with wet friction increasing characteristics, and a bulge array is added on the surface of a high-friction material, so that the friction coefficient of the friction pad is increased; the microstructure arrays can discharge a water film on the surface of the friction pad under the capillary action in a wet environment, and the effective contact area between solids is increased, so that the friction pad and a friction surface are always kept in a dry friction state, and stable friction force is ensured. The friction pad comprises a connecting layer, a supporting layer and a tail end protruding straight column array, a tail end contact layer is in a hexagonal straight column shape, the diameter of an inscribed circle of a hexagonal micro-column structure ranges from 5 micrometers to 5000 micrometers, column bodies are densely arranged in a hexagonal mode, the height of the column bodies ranges from 10 micrometers to 1500 micrometers, the tail ends of the column bodies are planes, the interval between every two column bodies ranges from 2 micrometers to 600 micrometers, and tight drainage grooves are formed.

The invention provides a flexible palladium film hydrogen sensor and a preparation method thereof, the flexible palladium film hydrogen sensor is sequentially provided with a flexible substrate, a hydrogen sensitive sensing layer and a contact connection layer from bottom to top, and the contact connection layer is connected with a resistance measurement unit; and the hydrogen-sensitive sensing layer is a palladium or palladium alloy film with a conical micro-nano structure. The palladium or palladium alloy thin film with the conical micro-nano structure provides a hydrogen sensor conical surface micro-nano structure with a high specific surface area for the flexible palladium thin film hydrogen sensor, and the process that hydrogen is adsorbed, dissolved and diffused into the palladium or palladium alloy thin film is accelerated, so that the response speed of the sensor is increased; according to the hydrogen sensor, the flexible substrate is adopted, so that the hydrogen sensor can be conveniently arranged in various narrow spaces, and the applicability of the hydrogen sensor in various scenes is improved.

The invention discloses a filter plate convenient to clean and a method thereof, and relates to the field of filter presses, the filter plate comprises a plate frame, the outer side of the plate frame is provided with a discharge swing part, and a drainage pipe is provided with a drainage detection part. According to the device, a discharging swing part is arranged, a hexagonal transmission rod drives a semi-bevel gear to rotate through operation of a motor, and when the semi-bevel gear drives a transmission bevel gear to rotate by 90 degrees, a supporting plate moves towards a plate frame, so that filter cloth is wrinkled to a certain extent; when the half bevel gear is separated from the transmission bevel gear, the two-way cam can be restored under the action of elastic restoring force of the torsion spring, so that the connecting rod can be quickly restored, the two ends of the filter cloth can be quickly pulled by the supporting plate, the filter cloth can be shaken by repeating the steps, the filter cloth is prevented from being attached to the rubber diaphragm, and the service life of the filter cloth is prolonged. Therefore, not only is the removal effect of filter residues on the filter cloth improved, but also the cleaning effect of the high-pressure nozzle on the whole filter plate is enhanced.

The invention relates to the technical field of filter element service life judgment, and discloses a water purifier filter element service life judgment method and system, and the method comprises the steps: obtaining the water quality and flow conditions of a water inlet and a water outlet of a water purifier during the continuous working period of the water purifier; layering the filter element, cleaning the filter element according to the water quality and flow rate conditions, and recording the cleaning time consumption; after cleaning is completed, the water quality and flow conditions of a water inlet and a water outlet of the water purifier are continuously observed, and when it is judged that the filter element needs to be cleaned, the time interval with last cleaning is calculated; and analyzing each layer of the filter element according to the cleaning time consumption and the time interval of the two times of cleaning, and comprehensively evaluating the service life of the water purifier filter element according to an analysis result. The service life judgment of the filter element can be dynamically adjusted, the problem of too early or delayed replacement is avoided, and the use efficiency and the water purification effect of the water purifier are improved. The filter element cleaning or replacing requirement can be better pre-warned, the maintenance cost is reduced, and the service life of equipment is prolonged.

The present invention proposes a nanofiber composite vehicle air filter paper with a gradient structure and a preparation method thereof, which is used to solve the technical problems of poor bonding strength between nanofibers and substrates and low filtration efficiency in nanofiber filter materials. The present invention uses a preparation process combining electrostatic spinning and electrostatic spraying to prepare a nanofiber composite vehicle air filter paper, which includes an ultrafine nanofiber mesh layer, a nanofiber layer and a filter paper layer arranged in sequence. The present invention has a good effect on PM under industrial standard wind speed conditions. 0.3 The initial filtration efficiency of particulate matter can reach 99.9%, reaching the H12 standard for air filtration materials. More importantly, in the self-cleaning backflush test, after 10,000 backflush tests, the PM 0.3 The filtration efficiency can still be maintained above 90%. This provides a new strategy for high-performance nanofiber filtration materials, which is of great significance to the high-tech, high-quality, green and sustainable development of nonwoven materials and filtration materials.

The invention discloses a pressure regulating solenoid valve, which relates to the technical field of solenoid valves, and comprises a valve body, the top of the valve body is provided with a valve seat, the valve seat is internally provided with a cavity, and through the arrangement of a first pressurizing hole, a second pressurizing hole, a flow dividing hole, a first flow dividing pipeline, a second flow dividing pipeline, a first pressurizing cavity and a second pressurizing cavity, the pressure regulating solenoid valve is formed. During use, when unstable high water pressure flows into the valve body, the high water pressure pushes the inner barrel upwards, then the inner barrel moves upwards to drive the flow dividing holes to move upwards, the flow dividing holes are driven to be sequentially in butt joint with the first pressurizing hole and the second pressurizing hole respectively, and then water is divided into the first flow dividing pipeline and the second flow dividing pipeline; then water flows into the first pressurizing cavity or the second pressurizing cavity, then water pressure is dispersed, then the water flowing into the first pressurizing cavity or the second pressurizing cavity downwards compresses the first spring to cause deformation shortening, and meanwhile, a stretched second spring is matched, so that when the water pressure upwards jacks the sleeve and the inner cylinder, buffering protection on the sleeve and the inner cylinder is enhanced.

Embodiments described herein provide a self-contained, above-the-counter beverage dispenser that allows for personalization of flavor intensity, temperature, and carbonation levels. The system can have a small form factor that allows it to sit on a countertop and below upper cabinetry. The dispenser can dispense carbonated beverages, still beverages, flavored beverages, hot beverages, cold beverages, and combinations thereof. Moreover, unlike existing systems, embodiments described herein may maintained by a user without special training, tools, or technical expertise. The dispenser can include consumable components, such as ingredient cartridges, a gas cylinder, and a filter. Each of these consumable components can be replaced easily without any tools or special training or expertise. Additionally, all consumables can be accessible behind a door on the front of the machine, making them readily accessible by only opening the front door.

The invention provides a PTFE foam coating multifunctional dedusting and denitration filter material and a preparation method thereof, and the technology is realized through the following steps: firstly preparing an efficient denitration catalyst, then preparing a dedusting filter material taking double base cloth as a substrate, and enhancing the structural stability through a special process. Then, the catalyst powder is uniformly impregnated in the substrate layer and dried to ensure the maximization of the catalytic activity. Then, a PTFE foaming coating is prepared, the surface of the needled felt is accurately coated with the PTFE foaming coating, the uniformity of the coating and the strong adhesive force of the coating and the base material are ensured through a gradient drying technology, and preparation of the multifunctional dust removal and denitration filter material is completed. According to the filter material, the PTFE foam coating and the efficient catalyst are combined, the integrated removal efficiency of various pollutants in industrial flue gas is effectively improved, the filter material is suitable for large-scale production, the cost effectiveness is optimized, the filter material has obvious advantages in economical efficiency and market application, and an efficient and economical solution is provided for industrial flue gas purification.

The present invention is an electrospun web including a carrier substrate and an electrostatically charged nanofiber. The electrospun web has a pressure drop of about 5 mmH2O or less, a percent penetration of about 50% or less, and a clarity of about 80% or more.

The invention relates to a degradable filter element and a preparation method thereof, and belongs to the technical field of PLA filter elements. The degradable filter element is arranged between an atomizing element shell and a metal heating wire, a plurality of capillary holes are formed in the degradable filter element and used for being filled with tobacco tar, and the degradable filter element is prepared from a degradable composite material through melt spinning. The degradable composite material comprises the following components: polylactic acid and modified silicon dioxide, wherein the modified silicon dioxide is prepared by taking nano silicon dioxide, a silane coupling agent, ferulic acid, amino acid and copper chloride as raw materials, the silicon dioxide is organically modified, so that the dispersity of the silicon dioxide in a polylactic acid system is improved, the interface binding force of the silicon dioxide is improved, and the mechanical property of a polylactic acid material is improved; various antibacterial components are introduced, so that the antibacterial property of the polylactic acid material can be effectively improved.

The invention discloses a flow and pressure regulating valve with a buffering effect, and relates to the technical field of flow and pressure regulating valves. Comprising a valve body, a mouse cage, a leakage detection assembly, an adjusting assembly and a filtering assembly, impurities in a medium are filtered through a filtering net on a filtering fan blade, the filtering fan blade is driven to rotate through flowing of the medium to generate centrifugal force, and the impurities are thrown out through the centrifugal force; and the filtered impurities are blocked and guided by the guide strips on the filtering fan blades, so that the impurities are thrown into the collecting tank along the guide strips, and the magnetic rings in the collecting tank adsorb and separate metal chips in the impurities, so that the purposes of filtering, collecting and separating the impurities are achieved. Leakage media are collected through the leakage cavity, the floating plate drives the contact on the supporting piece to extrude the piezoelectric ceramic in the elastic film under the action of buoyancy, buoyancy is generated through the leakage media, then the buoyancy is converted into displacement of the supporting piece, finally, the displacement is converted into an electric signal, and therefore the purpose of leakage detection is achieved.

A filter press includes a fabric stacking device, a filter press frame assembly, and a filter press device. The filter press frame assembly includes a filter press frame and a base plate. The filter press device includes a base, a main hydraulic cylinder, and a pressure plate. The fabric stacking mechanism includes a frame, a filter cloth operating assembly, a sludge discharge mechanism, a sludge separating and pressing mechanism, a pressing roller, and a fabric stacking and feeding mechanism. The filter cloth operating assembly includes a cloth winding mechanism, a winding and measuring mechanism, and a filter cloth correction mechanism. The cloth winding mechanism includes a cloth winding roller that can move along its own axial direction and rotate around its own axis. The cloth winding roller adjusts its position by moving along its own axial direction according to the detection result of the winding and measuring mechanism. The sludge separating and pressing mechanism includes a pressing plate with a horizontally arranged pressing part. The setting height of the pressing roller is adjustable, and the axis of the pressing roller is perpendicular to the moving direction of the lower filter cloth. The fabric stacking and feeding mechanism is located at one end of the frame and is used to transport sludge bags formed by the upper and lower filter cloths wrapping sludge. This invention can automatically correct the filter cloth deviation, keep the filter cloth flat, and prevent sludge leakage.

Porous membranes, and methods of making such porous membranes, that comprise staple or discrete fibers and nanoparticles dispersed throughout at least a portion of the membrane are provided. A filter media comprises a porous membrane comprising staple fibers and having a mean pore size of less than about 10 microns. The media further includes nanoparticles disposed within the porous membrane. The nanoparticles reduce the mean pore size of the membrane, while substantially maintaining the pressure drop (e.g., bubble point) across the membrane. The porous membranes may be configured for use as filter media and are particularly useful for gas or liquid filters, including, but not limited to, membrane filters, diesel filters, air filters, face masks, gas turbine and compressor air intake filters, panel filters, cartridge filters, bag filters, clean-in-place (CIP) filters and the like.

A disk-pack turbine for use, for example, in systems and methods in at least one embodiment for separating fluids including liquids and gases into subcomponents by passing the fluid through a vortex chamber into an expansion chamber and then through at least a portion of a waveform pattern present between at least two rotors and / or disks. The rotors and / or disks having waveform patterns on at least one side. In at least one embodiment, the waveform patterns include a plurality of hyperbolic waveforms travelling around an axial center of the disk with each hyperbolic waveform having a varying diameter along the waveform.

The invention discloses an on-line full-supercooling methane filling system and a filling method thereof, and relates to the technical field of rocket fuel filling systems, the on-line full-supercooling methane filling system comprises a first methane storage tank, a second methane storage tank, a first gas storage tank, a second gas storage tank, a second gas storage tank and a pre-cooling discharge pipeline, the first gas storage tank is connected with a rocket propellant storage tank and the pre-cooling discharge pipeline through a tube pass of a supercooler; the second methane storage tank is connected with the tube pass of the subcooler through a second pipeline; and the liquid nitrogen storage tank is provided with a third pipeline, and the third pipeline is connected with the shell pass of the subcooler. According to the on-line full-supercooling methane filling system, the technical problem that the risk of failure of a launching task is increased due to the fact that liquid level control is unstable when on-line supercooling filling is conducted on a rocket is solved, and the risk of failure of the launching task is increased when the flow in the methane filling process is adjusted. The flow of methane in the tube pass of the subcooler and the liquid level of liquid nitrogen in the shell pass of the subcooler are controlled to be unchanged, the situation of methane icing caused by unstable liquid level control is avoided, and then the risk of failure of a launching task is reduced.

A clothes dryer using an LED light source is proposed. Instead of using a heater, a blowing fan, and a heat exchanger, the clothes dryer employs a plurality of LED light source modules provided in a body and efficiently arranged therein and an air circulation structure of an air circulation part having a blowing fan arranged in the inner rear side thereof, and is configured to sterilize air through an air sterilization part, absorb and dry moisture by a ceramic filter, and then finally discharge the air to the outside through an exhaust fan. Therefore, without requiring a separate water discharge treatment process in an existing method, the clothes dryer can achieve efficient drying of clothes and drying of clothes without damage.

The invention discloses a method for realizing multi-stage solid-liquid separation by using graded filter pipes, which relates to the technical field of solid-liquid separation, and comprises the following steps: under the condition that the particle size between adjacent filter pipes is at a critical boundary, collecting a continuous motion track of particles in a particle size interval in a filter transition area, extracting a direction vector change sequence and a flow velocity disturbance amplitude, and judging whether particles of which the direction reversal frequency exceeds a preset threshold and the flow velocity disturbance amplitude is lower than a stable fluctuation limit exist or not so as to determine whether a particle repeated movement state occurs or not; a drift factor and a disturbance sensitivity factor are constructed according to a particle repeated movement state and are introduced into an affiliation path identification model as input variables, and affiliation judgment operation is executed through an affiliation probability calculation network. According to the invention, the problem that the path attribution of particles with critical particle sizes in the filtering transition area is unknown is solved, and the dynamic identification and accurate guide control of the particle attribution path are realized.

The utility model provides a cloth pressing assembly and water-containing material dewatering equipment, the cloth pressing assembly comprises a pressing rod which is used for pressing filter cloth and extends along the horizontal direction, and an angle is formed between the length direction of the pressing rod and the laying direction of the filter cloth; the limiting component is at least arranged on the side, facing the laying direction of the filter cloth, of the pressing rod, and the limiting component is attached to the pressing rod. According to the utility model, through the arrangement of the limiting component, when the pressing rod is subjected to the horizontal acting force of the filter cloth, the pressing rod can be propped through the limiting component, particularly, one side, facing the laying direction of the filter cloth, of the pressing rod is propped, so that the pressing rod is prevented from displacing along the horizontal direction, and the pressing effect of the pressing rod on the filter cloth is ensured.

A modular porous swale. The modular porous swale may comprise a porous concrete block and filtration joint. The porous concrete block may snugly fit within a trench having a lower portion filled with an absorption media. The absorption media may include gravel, activated alumina, bone char, biochar, bone char and activated alumina mixture, and biochar and activated alumina mixture. The porous concrete block may have a top surface inwardly-sloped to a nadir. The filtration joint may be disposed within the porous concrete block and along the nadir. The liner may cover one or more sides of the porous concrete block. The perforated pipe may be located within the absorption media. The filtration joint may substantially align above a portion of the perforated pipe when the modular porous swale is installed within the trench.

The invention particularly relates to a preparation method of aramid fiber filter paper, which comprises the following steps: step (1), aramid pulp fibers are added into a dispersion liquid for multiple times for dispersion treatment to obtain gradient-size aramid mixed fibers, and the dispersion liquid comprises a dispersing agent, strong base and a solvent; (2) mixing the gradient-size aramid fiber mixed fiber with water, and mechanically stirring at a high speed to obtain gradient-size aramid fiber mixed fiber slurry; and (3) processing and forming the gradient-size aramid fiber mixed fiber slurry to obtain the aramid fiber filter paper. The invention further relates to aramid fiber filter paper and application thereof. The aramid fiber filter paper disclosed by the invention is high in filter precision and low in filter resistance, and can be used as a hierarchical composite material.