84results about How to "Good filter function" patented technology

The invention discloses a seawater factory-style circulating water fish farming treatment method which comprises, removing the residual bait and excrement from the seawater flowing out of the fish pond through full-automatic conduit pipe filter apparatus, entering foam separate tank from the circulating pump to remove part of the suspended matter and protein, then removing ammonia nitrogen through biological cleaning tank, adjusting water temperature and pH, disinfecting through ultraviolet rays, oxygenation, charging the detected water into the fish pond again, thus completing a circulation.

A controlled atmosphere incubator having an interior chamber adapted to be heated and humidified. An easily accessed blower is located within the gaseous environment of the incubator chamber and includes a HEPA filter and VOC filter readily replaceable by the user from within the chamber.

The invention relates to a tomography imaging system and method based on a terahertz quantum device. The system comprises a terahertz source part, a transmission convergence light path system, a rotary parallel scanning table and a terahertz signal detection part, wherein the terahertz source part comprises a terahertz quantum cascade laser, a drive power supply and a chopping fan; the transmission convergence light path system comprises a first off-axis parabolic mirror group and a second off-axis parabolic mirror group; and the terahertz signal detection part comprises a terahertz quantum well detector, a signal processing module and a phase-locked amplifier. The method comprises the following steps: the continuous terahertz waves emitted by the terahertz quantum cascade laser are modulated by the chopping fan and converged on a sample by one off-axis parabolic mirror group; the terahertz waves penetrate through the sample and are converged to the terahertz quantum well detector through the other parabolic mirror group to generate a response light current; the light current signal is converted into a voltage signal; the voltage signal is amplified by a low-noise amplifier; and the data is read by the phase-locked amplifier. According to the invention, the tomographic image information of the sample can be effectively obtained.

The invention relates to a kitchen sink, in particular to a self-cleaning type water-saving anti-blocking sink. The sink comprises a sink body and a water discharging pipe; a water distributor is serially connected between the sink body and the water discharging pipe; the water distributor comprises a cylindrical shell, a water seal mounted at the upper part of the cylindrical shell, a conical filter net mounted in the center of the lower part of the conical shell, and a power apparatus for driving the conical filter net to rotate; the water discharging pipe is arranged in the bottom center of the cylindrical shell; a scraping plate in contact with the outer wall of the conical filter net is arranged on the inner wall of the cylindrical shell; a residue discharging hole is formed in the upper end part of the scraping plate; the power apparatus comprises a centrifugal pump; a rotary shaft of the centrifugal pump penetrates through the water discharging pipe and is fixed with a rotary shaft of the conical filter net; a tangential hole of the centrifugal pump serves as a water inlet; an axial hole of the centrifugal pump serves as a water outlet and is connected with a tap; a hairbrush in contact with the conical filter net is arranged on the inner side of the conical filter net; and the hairbrush is fixed at the bottom of the cylindrical shell. The sink adopting the technical scheme is good in anti-blocking effect, can be automatically cleaned, and has a water-saving effect.

The invention relates to crushing equipment, in particular to concrete crushing equipment for road construction. The concrete crushing equipment for the road construction is high in efficiency and uniform in crushing. The concrete crushing equipment for the road construction comprises a base, a first bracket, a second bracket, a first fixing plate, a first motor, a first gear, a first bevel gear,a second gear, a first connecting rod, a first slide rail and the like. The first bracket is fixedly connected to the upper right side of the base, and the second bracket is fixedly connected to the left side of the first bracket. A through hole is formed in the left portion of the second bracket, and the first fixing plate is fixedly connected to the upper right side of the second bracket. The concrete crushing equipment for the road construction realizes the function of crushing concrete, the function of rapidly crushing the concrete is realized, and the function of filtering the crushed concrete is realized.

The invention provides a transmission imaging device and method based on a tera-hertz quantum device. The transmission imaging device comprises a light source part, an optical path part and a detection part, wherein the light source part comprises a driving power supply, a first cold head, a first heat sink arranged in the first cold head, a tera-hertz quantum cascaded laser arranged on the first heat sink and a first polyethylene window arranged on the first cold head; the optical path part comprises a first off-axis parabolic mirror, a second off-axis parabolic mirror, a two-dimensional electric translation platform, a third off-axis parabolic mirror and a fourth off-axis parabolic mirror; and the detection part comprises a second cold head, a second polyethylene window arranged on the second cold head, a second heat sink arranged in the second cold head, a tera-hertz quantum trap detector arranged on the second head sink, a signal processing circuit, an oscilloscope and a computer. The device and the method have the advantages that: an adopted tera-hertz radiation source can work in the pulse mode; and due to the adoption of the tera-hertz quantum trap detector serving as a signal detector, the imaging speed of a system can be increased effectively, and the imaging quality can be enhanced.

Systems and methods which provide filtering dielectric resonator antenna (FDRA) configurations implementing radiation cancellation are disclosed. Embodiments of a FDRA provide implementations of dielectric resonator antennas (DRAs) which are configured with a loop feed structure facilitates radiation cancellation to provide radiation nulls at frequencies outside of a desired passband to thereby implement radiation cancellation for filtering functionality of the FDRA. FDRAs of embodiments may be variously polarized, such as to provide linear polarization or circular polarization.

The invention provides a preparation method of a sludge straw biomass fuel, which comprises the following steps: firstly mixing the excess sludge with the moisture content more than 96% from a municipal wastewater treatment plant with particle coal with the particle size of 0.15-0.18mm based on the mass ratio of 1:1-2; then filtering and dehydrating to obtain dewatered sludge with the moisture content of 40-60%; smashing the crop straws into crop powers to mix with the dewatered sludge based on the mass ratio of 1-10:90-99; and prilling and molding by a comminutor to prepare the sludge straw biomass fuel. The fuel can be used as an alternative fuel of the coal to directly be burnt for heat supply, is free of black smoke in the burning process, and can be applied in boilers or daily life cookware. The invention sufficiently utilizes the higher calorific value of the municipal sludge and the crop straws, realizes resource utilization of the fuel, and solves the treatment problem of the excess sludge from the municipal wastewater treatment plant and the crop straws.

The invention discloses a resonance transmission rod for connecting a sensor in acoustic emission detection. The resonance transmission rod is arranged on the surface of a metal device to be tested or a measure part metal, is connected with the acoustic emission sensor, and is used for detecting the fracture damage or the internal cracks of the metal device. The resonance transmission rod is characterized in that the transmission rod has a stepped integral structure formed by two metal material cylinders which have a large end and a small end respectively; the large end of the transmission rod is fastened on the metal surface of the device; the acoustic emission sensor is arranged on the small end of the transmission rod; and the dimensions of the diameters and the lengths of the large end and the small end of the stepped metal material cylinders satisfy resonance conditions. The transmission rod can generate resonance and has the energy cohesion and amplitude amplification functions under the action of an acoustic emission frequency. Test research results show that the resonance transmission rod designed according to the above mode has above ten-time amplitude amplification and frequency domain band-pass filtering functions when the resonance transmission rod is applied to the acoustic emission detection.

The invention relates to a straight hole ceramic filter used for cast steel and high temperature alloy. The straight hole ceramic filter comprises 65 to 85% of Al2O3, 11 to 33% of SiO2, 1 to 3% of MgO, and 1.5% or less of other alkali metal oxides. Crystalline phase of the straight hole ceramic filter preferably comprises 40 to 90% of mullite, 5 to 55% of corundum, 8% or less of quartz, and 5% or less of glass phase. The straight hole ceramic filter is low in cost, and is capable of tolerating fast (straight) washing of high temperature molten steel with a temperature of 1650 DEG C or high temperature alloy liquid.

The invention discloses a base improvement and ecological rehabilitation method for a windward side embankment. The base improvement and ecological remediation method comprises the following steps: A, area selection; B, slope flattening and ramming; C, ecological concrete preparation, including stirring and mixing river sand, crushed stones, cement, water, blending agents and chemical additives in proportion to prepare ecological concrete; D, improved soil preparation, including mixing minerals and detritus into red soil; E, base improvement and ecological rehabilitation under a normal water level, including paving ecological concrete members; F, base improvement and ecological rehabilitation between the normal water level and a flood level, including paving cast-in-place ecological concrete; G, base improvement and ecological rehabilitation above the flood level, including paving stone, filling concrete holes and stone gaps with soil, and planting vegetation in the concrete holes and the stone gaps; H, base improvement and ecological rehabilitation at the top of the windward side embankment, including paving sandy soil and planting vegetation; and I, maintenance and management. The base improvement and ecological rehabilitation method provided by the invention is convenient to operate and low in investment and operation management cost, realizes multiple effects such as embankment stabilization, landscape greening and pollutant interception, and has important environmental, social and economic benefits.

The invention relates to a perturbation and observation method MPPT control method with a photovoltaic array self-adaptive step size. The control method includes the main steps that output voltage and currents of a photovoltaic array PV are sampled to obtain a P-U characteristic curve, PV end voltage corresponding to incomplete differential and PV end voltage corresponding to ideal differential are Ua and Ub respectively, and the PV end voltage is divided into an interval I (0-Ua), an interval II (Ua-Ub) and an interval III (>Ub). Forward disturbance is performed in the interval I with the step size of d1, reverse disturbance is performed in the interval II with the step size of (2 eta-1), and reverse disturbance is performed in the interval III with the step size of d1. Signal samples of a voltage sensor and a current sensor of a system are connected into a micro processor, all processing modules for executing the method are stored in a program storage unit, a pulse width modulation module (PWM) is connected into output of the micro processor, and the PWM outputs a drive signal to control a direct-current conversion circuit of the photovoltaic array to achieve maximum power point tracing. Tracing is carried out with the small step size close to the MPP and with the large step size in far intervals, the step size is adjusted in a self-adaptive mode, the antijamming capability is improved, PV power loss is effectively reduced, and the energy use ratio is effectively increased.

The invention relates to a water quality modifier, and in particular to a water quality modifier and a preparation method thereof. The modifier is prepared from the following raw materials in parts by weight: 20 to 30 parts of zeolite powder, 12 to 25 parts of calcium peroxide, 13 to 27 parts of lignite, 4 to 11 parts of lignin, 5 to 10 parts of polyethylene glycol, 4 to 11 parts of potassium ferrate, 6 to 13 parts of titanium dioxide powder and 7 to 15 parts of polyethyleneimine. The technical scheme provided by the invention can be used to a certain extent for overcoming the defects of being poor in ammonia nitrogen removal effect in wastewater, not conducive to the survival of fish and poor in water quality modification effect of a modifier provided in the prior art.

A method for preparing a nanoporous membrane includes alternatively repeating, on the surface of a porous substrate, the laminating of a hydrophilic homopolymer and the laminating of an amphiphilic block or graft copolymer to provide a polymer multilayer film in which the alternative laminate of the hydrophilic homopolymer and the amphiphilic block or graft copolymer is formed. The polymer multilayer film is annealed to form a microphase separated polymeric membrane. The laminating of a hydrophilic homopolymer and the laminating of a supramolecular structure compound are alternatively repeated, on the surface of the polymeric membrane, to form the alternative laminate of the hydrophilic homopolymer and the supramolecular structure compound.

The invention relates to a straight hole ceramic filter for cast steel. The straight hole ceramic filter for cast steel comprises 60 percent to 80 percent of Al2O3, 10 percent to 25 percent of SiO2, 5 to 15 percent of ZrO2 and less than or equal to 1.0 percent of other alkali metal oxide. Preferably, the crystal phase composition of the straight hole ceramic filter adopts zirconium mullite corundum, a principal crystalline phase is formed of mullite and a minor crystalline phase is made of tetragonal phase zirconia, a corundum phase and a small quantity of monoclinic phase zirconium oxide, wherein the content of the zirconium oxide is 5 to 15 percent; the content of the mullite is 40 percent to 75 percent; the content of corundum is 5 percent to 50 percent; the content of a glass phase is less than or equal to 5 percent. The straight hole ceramic filter can resist to fast (straight) rushing of liquid steel with a high temperature of 1,700 DEG C without being broken and achieves an effect of purifying the liquid steel.

The invention discloses an air purification material, which is prepared by the following method: (1) uniformly mixing a high polymer and an organic solvent to prepare a spinning solution, and dispersing the adsorption material in a volatile solvent to prepare a spray solution; (2), carry out high-voltage electrospinning and high-voltage electrostatic spraying to spinning liquid and spray solution respectively, receive together, after the solvent volatilizes, obtain the electrospinning spray nano-composite material that contains adsorption material; (3), obtained Composite materials and non-woven fabrics are hot rolled and combined on a hot rolling mill. In the present invention, nanofibers and activated carbon materials are combined to prepare electrospinning spray composite nanomaterials, which are composited with non-woven fabrics, not only have good air filtering functions, but also have good functions of adsorbing toxic and harmful gases, and can be widely used It is used in the field of air purification, such as air purifier filter elements, air conditioning filter elements, automotive interior materials, etc.

The invention provides a self-supporting two-dimensional film as well as a preparation method and application thereof. The self-supporting two-dimensional film comprises a film-forming material which is stacked to form the film, wherein the film-forming material is sheet-shaped, a layered channel is formed based on nanosheet stacking, and a good filtering function can be achieved. The thickness of the self-supporting two-dimensional film disclosed by the invention can be determined by the amount of the filtered film-forming materials, and the more the filtered and accumulated film-forming materials are, the thicker the obtained film is, so the control on the film thickness can be realized by controlling the amount of the filtered film-forming materials.

Provided is a non-woven fabric wet process net forming technology. Natural fibers and synthetic fibers are taken as main raw materials, the fiber raw materials arranged in a water medium are opened into single fibers, different fiber raw materials are used for being mixed to form fiber suspension pulp, the suspension pulp is conveyed to a net forming mechanism, and a net is formed by the fibers in a wet state and then is strengthened into fabric. According to the non-woven fabric wet process net forming technology, the wet state opening and wet method net forming technologies are adopted, and the fibers in the manufactured fiber net are arranged disorderly and are almost isotropic; the fiber net is good in evenness, high in evenness degree, superior in filtering function, high in strength, modulus and elasticity, resistant to abrasion and good in temperature resistance and heat insulation effect and fire resistance, and has the functions of heat absorption, moisture absorption, deodorization, odor resistance, bacteria resistance and prevention, freshness preservation and the like and the function of electrical insulation.

The invention discloses an anti-ion type composite moisture absorption core. The anti-ion type composite moisture absorption core comprises an ion exchanging layer and an absorption core layer, wherein the ion exchanging layer consists of a porous type adsorption separation material, a cation exchange capacity is 1.5-6.8mmol / g, the gram weight of the composite moisture absorption core is 25-600g / m<2>, the multiplying power of absorbed normal saline is 60-600g / g, and the porous type adsorption separation material is a porous type high-performance ion exchange membrane material, or porous type granular aluminum oxide, or is formed by filling discrete 2-60% of an ion exchange resin by mass into a porous type fiber network formed by 30-70% of thermoplastic short fibers and 0-30% of wood pulp wool fibers. The composite moisture absorption core is of a structure with two or more layers and is rectangle-shaped or dumbbell-shaped, and the composite moisture absorption core is applied to fields of paper diapers, sanitary towels or pet pads.

The invention relates to a bletilla striata gelatin and a preparation method thereof, which relate to the technical field of biopharmaceutics. The preparation method of the bletilla striata gelatin comprises the steps of a smashing step, a screening step, an extracting step and a purifying step. The preparation method of the bletilla striata gelatin comprises the concrete steps of smashing bletilla striata, then screening through a saturated sodium chloride solution, adding water for ultrasonic processing after screening, and purifying through an ethanol solution. According to the method, the bletilla striata raw materials are well screened, and the prepared bletilla striata gelatin has high purity and a good pharmacological function; the extraction rate of the bletilla striata gelatin is greatly improved, the utilization ratio of the raw materials is improved, and the cost is reduced. The bletilla striata gelatin provided by the invention is prepared through the preparation method of the bletilla striata gelatin, and has high purity and a good pharmacological function.

The multifunctional sea water purification equipment comprises the purification pool and filter material placed in the purification pool, and the described filter material is formed from several pieces of water-cleaning clohtes which are parallelly sepaced and suspended, and the purification pool is divided into several purification filtering chambers by means of water-cleaning clothes. Said water-cleaning cloth has a row of vertical gaps which are cut according to a spaced width, and its two end portions and middle portion are equipped with connecting portion with a certain width, said water-cleaning cloth is a punched non-woven fabric, and its specific surface area is above 2000 sq.m / cu.m. Its purification process includes: fish farming pool, air float pool, multifunctional sea water purificiation equipment, oxygen-dissolving tank and fish farming pool.

Disclosed is glue-free airtight filtering equipment comprising a filter housing, a plurality of filter elements and a plurality of receiving supporting elements, each filter element having a filtering surface, the plurality of filter elements being detachably disposed in the filtering space in a manner that the filtering surface is parallel to the upper surface and the bottom surface of the filter housing, and the plurality of receiving supporting elements allocating on an inner wall of the filter housing and being spaced apart from each other with a designated distance so as to correspondingly receive and support the plurality of filter elements, wherein a gap is provided between the filter element and the inner wall of the filter housing, and the filtering surface of the filter element and the maximum value of the gap satisfy a relational expression.

The invention discloses a resonant frequency online identification and suppression method for a servo system. The resonant frequency online identification and suppression method comprises the following steps: inputting a rotating speed deviation and setting an initial frequency; obtaining a transfer function according to the structure of the second-order generalized integrator, and calculating an output signal; calculating a frequency error signal, inputting the frequency error signal into a low-pass filter of the frequency-locked loop, and multiplying the output of the low-pass filter by a proportional controller; multiplying the output of the proportional controller by a gain self-adjusting unit, inputting an output value into an integrator, summing the output frequency of the integrator and a set initial frequency to obtain an estimated resonant frequency, and judging whether convergence time is reached or not; and if the convergence time is reached, inputting the estimated resonant frequency into the notch filter, and setting the estimated resonant frequency as a notch frequency point of the notch filter, thereby realizing resonance suppression. According to the method, the resonance of the servo system can be accurately identified and suppressed, especially under the condition that the rotating speed vibration frequency is relatively high, so that the performance of the servo system is improved.

An air humidifying, dust washing and cooling device provided with a sprayed grass core is composed of the grass core, a spraying unit, a top box, a fan, a bottom box, a water pan, a water pump, a water supply tube and a primary filter. The top box and the bottom box are installed at the top and the bottom of the grass core to seal the top surface and the bottom surface of the grass core correspondingly. The spraying unit is arranged in the top box and connected with the water pump through the water supply tube. Circulating spraying is conducted by circulating water in the water pan. The primary filter is arranged at an air suction port of the grass core, and filtered air enters the grass core. The water pan is arranged under the grass core. Water sprayed out by the spraying unit is partially attached to the surface of grass and partially flows downwards along gaps of the grass, spraying water flowing out of the grass core is collected to the bottom box and flows back to the water pan to be used repeatedly or be drained. When the fan works, air is forced to pass through the wet surface of the grass and the inter-grass gaps to be filtered and washed, so that the comprehensive effects that the air is humidified, dust is removed and the temperature is decreased are achieved.

The invention discloses a fully automatic external scraper filter. The filter comprises a cylinder, a main shaft, a fixed sleeve and a rotating sleeve are installed in the cylinder, the top of the cylinder is provided with a gear reducer through a gear reducer support, the upper end of the cylinder is provided with a feeding inlet, the bottom of the cylinder is provided with a discharge outlet, a pollution discharge valve is installed on one side of the lower end of the cylinder, a motor is in transmission connection to the main shaft through the gear reducer, and the main shaft is provided with evenly distributed scrapers through a first scraper clamping plate and a second scraper clamping plate. The filter removes impurities from the surface of a filter screen by an efficient mechanical scraping method so that the filter screen has a good filtering function. A spring compensator is arranged between the scrapers and the main shaft so that the scraper cannot tightly or loosely fit to the filter screen. When the scraper too tightly fits to the filter screen, a service life of the filter screen is influenced and when the scraper too loosely fits to the filter screen, screen surface impurities cannot be fully removed. Through the spring compensator, the screen surface impurities can be effectively scraped and removed and the filter screen and scrapers can be protected.

The invention discloses a high efficiency energy saving potato cleaning device. The device includes a casing, a cleaning and peeling mechanism, a collecting and cleaning mechanism, an electric controlbox, a control panel, a diversion tank, a soil purifier, a water storage tank, a water pump, a connecting pipe, a support block and a water spray pipe, wherein the cleaning and peeling mechanism is disposed inside the casing, the collecting and cleaning mechanism is disposed at the bottom of the cleaning and peeling mechanism, the electric control box is mounted on one side of the casing, the control panel is mounted on one side of the electric control box, the diversion tank is mounted on the top of the collecting and cleaning mechanism, the soil purifier is mounted at the bottom of the diversion tank, the water storage tank is mounted at the bottom of the soil purifier and at the inner top portion of the casing, and the water pump is mounted on one side of the water storage tank; The device is advantaged in that the removed potato skin, larger mud blocks and water can be separated through the collecting and cleaning mechanism, the potato skin and the mud blocks are separately collected, moreover, the mud water is filtered again to clean potatoes to realize recycling, and water resources are saved.

The invention discloses a flange. The flange comprises a flange plate body. The flange plate body is sequentially divided into a bolt fastening area, a sealing area and a middle through hole from outside to inside. The middle through hole is a step hole, so that a step part is formed. A plurality of threaded blind holes are formed in the step part. A filter screen is arranged on the step part and fixed to the step part through a plurality of bolts which are matched with the threaded blind holes. The sealing area is provided with a combined type sealing gasket. The combined type sealing gasket comprises a first copper gasket layer, a second copper gasket layer and a fabric layer arranged between the first copper gasket layer and the second copper gasket layer. The first copper gasket layer and the fabric layer are bonded through an adhesive, and the fabric layer and the second copper gasket layer are bonded through an adhesive. In this way, the flange has a good filtering function and an excellent sealing effect, and is high in practicability.

The invention relates to an atomization core, an atomizer and an electronic atomization device. The atomization core comprises a base body, wherein the base body is provided with an atomization face,and the base body is used for buffering and conducting liquid; a heating body which comprises a heating part attached to the base body, and can generate heat to atomize liquid on the atomizing surfaceinto smoke; and a protective layer which is arranged on the atomizing surface and covers the heating part, wherein smoke can overflow from the protective layer. By arranging the protective layer, most of liquid particles and solid particles in smoke flowing back to the atomizing core are directly adsorbed in the protective layer, so that the protective layer has a good filtering function, and thesituation that the liquid particles and the solid particles flow to an atomizing surface to form smoke scales gathered on the surface of the heating part and around the heating part is avoided; therefore, the proportion of liquid particles and solid particles which are used for being converted into smoke scales in the smoke is greatly reduced, and the smoke scale amount gathered on the surface and the periphery of the heating part is further reduced.