19 results about "Filter effect" patented technology

The invention relates to a solid-type filter stick formed by granular assembling and a preparation method of the solid-type filter stick. The filter stick is prepared by the assembling forming of solid granules and an adhesion agent, wherein the solid granules are one or more of natural plant granules, natural mineral granules and artificial adsorption granules. The adhesive agent is one or more of ethylene-vinyl acetate copolymer, polyethylene hot melt adhesive, epoxy resin, polyester, polyether, polyurethane, dextrin, polyvinyl alcohol, polycaprolactone, gelatin and Arabic gum. The mass ratio of the solid granules and the adhesive agent is 0.5-200:1. The filter stick is prepared by the bonding forming after the solid granules and the adhesive agent are mixed, is loosened, breathable and stable in structure, and can be used as a unitary filter tip or can be combined with other filtering materials to form a multi-component filter tip. The preparation method is simple in process and high in production stability. The filter stick is novel in appearance and structure, stable in structure, excellent in incision performance, wide in material selection range, good in filtering effect and capable of effectively improving the smoking quality of cigarettes.

The invention relates to the technical field of separation devices, and in particular relates to an oil liquid cleaning and filtering device. The oil liquid cleaning and filtering device comprises a cylindrical rotating shaft and a housing, wherein one end of the rotating shaft is open, the other end of the rotating shaft is closed, the closed end of the rotating shaft is connected with a motor for being driven, an oil liquid is pressed into the rotating shaft from the open end, a plurality of jet holes are arranged on one section positioned in the housing, of the rotating shaft, and the oil liquid enters into the housing through the jet holes; and a plurality of layers of filter meshes which are concentric with the rotating shaft and wrapped on the rotating shaft are arranged in the housing, and the filter meshes rotate together with the rotating shaft. The oil liquid cleaning and filtering device has the advantages that, by adopting the centrifugal filtering method, the oil liquid cleaning and filtering device is conductive to separating the oil liquid from impurities; the multiple layers of the filter meshes can fully filter all the impurities in the oil liquid; and furthermore, the operation is simple, the use is convenient, and the filtering effect is good.

The invention relates to a progressive filter cake and water film two-level filter air purifying and humidifying device, and belongs to the technical field of air purifying and humidifying. The devicemainly comprises an upper grid plate, an LCD liquid crystal display, a temperature and humidity sensor, a side grid plate, a box body, a fan, a roll type filter, a liquid accumulation groove, a conical plastic net, a fiber thin film, a water pipe, a water tank, a water storage groove, a water pump, a piston and the like; according to first-level filter, through the roll type filter, a filter cakeis formed, through progressive replacement, filtered air is more stable in quality, according to second-level filter, a water film is formed on the filer film on the conical filer net, purifying of bacteria, dust and the like can be achieved while humidifying is carried out, according to the air purifying and humidifying device, the humidifying purifying manner and the purification manner can beswitched, the different needs of the user can be met, the progressive filter cake and water film two-level filter air purifying and humidifying device is high in efficiency, low in energy consumption,simple, and stable in filter effect, the indoor air can be effectively purified, and the device has the wide application prospect in the site with the particle requirement for the air quality.

The invention relates to the technical field of sample filtration for instrumental analysis and provides a sample filter device for instrumental analysis. The sample filter device comprises a solutionfilter chamber which comprises an external cylindrical shell, a cylindrical filter barrel is embedded in the external cylindrical shell, and supporting columns are arranged on the inner bottom face of the external cylindrical shell. The upper end of the solution filter chamber is connected with a seal cover, a rotating rod is mounted in the middle of the lower side of the seal cover, stirring blades are mounted at the tail end of the rotating rod, and a rocker is arranged in the middle of the upper side of the seal cover. A pressurizing air cylinder is mounted at the upper end of a supportingplate which is mounted on the lower side wall of the solution filter chamber. By arrangement of the two-layer solution filter chamber, convenience in thorough filtration of liquid is achieved; by arrangement of the stirring blades and the rotating rod, impurity precipitation and attachment are avoided; by arrangement of the pressurizing air cylinder, the filter speed is increased. The sample filter device is simple in structure, capable of filtering instrumental analysis samples, high in filter speed and great in filter effect.

The invention relates to a vacuum belt type dryer material dust continuous discharge system. The vacuum belt type dryer material dust continuous discharge system comprises a material buffer tank, a vacuum material feeder, a material discharge pipe, an air inlet valve and a material feeding valve, the material buffer tank is connected with a vacuum machine set through a vacuum pipeline, the passageof the vacuum pipeline is internally provided with an emptying valve and a filter, the filter is located between the emptying valve and the material buffer tank, the emptying valve is opened to makethe material buffer tank be in a normal pressure state, then the air inlet valve and the material feeding valve are opened, materials inside the material buffer tank are collected through the vacuum material feeder, after the materials are all collected, the emptying valve, the air inlet valve and the material feeding valve are closed, and the vacuum degree of the material buffer tank is restoredthrough the vacuum machine set. The vacuum belt type dryer material dust continuous discharge system has the beneficial effects that in the process of switching the emptying valve and a balancing valve in each cycle, because of continuous production of pressure differential air flow, converse blowing sweeping is performed on the filter, the filter is made to maintain the filtering effect at each cycle stage, the drying recovery rate of the materials is greatly increased, and the continuous running time of the vacuum machine set is guaranteed.

The invention discloses a filtering device for chemical waste treatment, and belongs to the technical field of chemical machinery. The filtering device for the chemical water treatment comprises a bracket, a filtering tank, a filtering screen and an anti-blockage mechanism, wherein the anti-blockage mechanism comprises an aerostatic press and an air delivery pipe; the air delivery pipe comprises an air inlet part and a working pipe; the aerostatic press is communicated with the air inlet part; the working pipe is helically distributed and horizontally arranged; the working pipe is located below the filtering screen and approaches the filtering screen; the working pipe comprises an inner end and an outer end; the inner end is communicated with the air delivery pipe; the working pipe is provided with multiple air outlets which are open upwards obliquely. Air is delivered into the working pipe by using the aerostatic press and is exhausted via the air outlets; as the multiple air outletsare obliquely arranged and the working pipe is helical, chemical water above the working pipe is enabled to do helical ascending motion; the fact that a substance which is larger in particle remainingon the filtering screen cause blockage is prevented; the filtering efficiency can be greatly improved and the filtering effect is improved.

The invention discloses a spectral noise reduction method based on digital filtering. The spectral noise reduction method comprises the following steps of: 1, selecting a spectral signal S to be denoised, 2, designing a frequency-amplitude response function PF of the spectral signal S to be denoised, 3, converting the frequency-amplitude response function PF to obtain a corresponding filtering convolution transfer function H, 4, calculating the convolution Y of the spectral signal S to be denoised and the convolution transfer function H, 5, intercepting data with the same length as the S fromthe beginning of the Y, i.e., a result after noise reduction of the S, and 6, selecting parameters Wr and Wp with optimal filtering effects to obtain a corresponding optimal filtering convolution transfer function H, and then obtaining an optimal noise reduction result. Data points obtained through the method are more compact and uniform, an end point is not cut off, and the length of a data sequence can be selected according to the precision requirement; and polynomial order limitation does not exist, the Runge phenomenon occurring under a high-order condition does not exist, and the result is more precise.

The invention discloses an air purifier with an anti-microbial filtering effect, which comprises a purifier main body; the outer part of the purifier main body is fixed with an outer shell body, the lower end of the outer shell body is symmetrically provided with two silver ion generators; meanwhile, the bottom end of the purifier main body is provided with an air inlet, and the air inlet is located at the outer surface of the outer shell body; the air inlet is located in the middle of two silver ion generators; meanwhile, the inner part of the purifier main body is fixed with a dust collecting filter screen, a deodorizing filter screen and a HEPA filter screen; the dust collecting filter screen is arranged atone side closing to the air inlet, and the deodorizing filter screen is arrangedat the upper part of the dust collecting filter screen. Through the silver ion generators, the dust collecting filter screen, the deodorizing filter screen, the HEPA filter screen, an bacteriostatic agent layer, a Teflon film, a soundproof cover, a damping base, a servo motor and a silencer, the problems of no effective anti-microbial and filtering effects in the device, big noise and vibration sense and weak air purifying effect are solved.

The invention discloses a wastewater treatment device convenient to use. The device comprises a housing, wherein the lower surface of the housing is fixedly connected to the top ends of four first electric pushing rods, and the four first electric pushing rods are correspondingly positioned at four corners of the lower surface of the housing; pulleys are fixedly connected to the bottom ends of thefirst electric pushing rods; the lower surface of the housing is fixedly connected to the top end of a first rotating shaft which is positioned in the center of the lower surface of the housing. According to the device, a motor, a driving wheel, a driven wheel, a belt, a second bearing, a second rotating shaft, a turntable, a third bearing, a third rotating shaft and a pulling rope are arranged;when the motor runs, the second rotating shaft can be driven to rotate through the driving wheel, the driven wheel and the belt, and the turntable is driven to rotate through the second rotating shaft, and moreover, the tension force of a sieving plate is applied to the third bearing all the time, so that sieving plate can move up and down in one circle while an output shaft of the motor rotates in one circle, and as a result, the filtering effect is improved.

The present invention relates to a precise filter, which comprises a filter cover and a filter base. A lug boss is arranged on the filter cover, and the filter cover and the filter base are communicated. The filter base is provided with external threads and a round screw nut is arranged between the filter cover and the filter base. A filter element made of macromolecule sintering polyfluortetraethylene is arranged between the filter cover and the filter base. Because the filter element is made of the macromolecule sintering polyfluortetraethylene, the filtering effect is better. The filter base is fixed on a permanent plate through a bolt, so that in disassembly and assembly processes, the precise filter is more convenient to use.

The invention relates to the technical field of spatial filtering devices, and provides a spatial filtering device. The spatial filtering device comprises a frequency division lens, a recovery lens and at least two filtering small holes, wherein the frequency division lens and the recovery lens form a confocal optical system; and the filtering small holes are positioned between a focal point of the confocal optical system and the frequency division lens and/or the recovery lens. The plurality of the filtering small holes share scattering effect of high-frequency components of a laser beam evenly, the laser power absorption of one single filtering small hole is reduced so that the safety performance is improved, and the filtering effect of various kinds of high-frequency components of the laser beam is significantly improved so that the low-pass spatial filtering function can be better realized. Since the filtering small holes are positioned far away from the focal point, the size of faculae is large, the corresponding power density is low, and spark phenomenon is not liable to occur. In addition, the size of the filtering small holes is large, the processing difficulty is reduced, the misalignment tolerance of small hole adjustment is increased, and the system is easy to operate stably.

The invention discloses a common mode filter and electronic equipment. The common-mode filter comprises a dielectric layer, and a first magnetic layer, a first electrode layer, a second electrode layer, a third electrode layer, a fourth electrode layer and a second magnetic layer which are stacked in sequence. Every two adjacent layers are isolated through a dielectric layer; the second electrode layer comprises a first sub-coil and a second sub-coil which are insulated, and the two coils surround in the same direction and are electrically connected with the input electrode on the first side; the third electrode layer comprises a third sub-coil and a fourth sub-coil which are insulated, the two coils surround in the same direction and are electrically connected with the output electrode on the second side, the third sub-coil is electrically connected with the first sub-coil, and the fourth sub-coil is electrically connected with the second sub-coil; the second side and the first side are oppositely arranged; the first electrode layer is electrically connected with the fourth electrode layer. According to the invention, the filtering effect of common-mode noise can be improved, and the signal loss can be reduced.

The invention relates to a tail gas filter with a good black smoke filter effect. The tail gas filter comprises a filter box (1), wherein a first filter screen (2), a first ceramic honeycomb carrier (3), a second ceramic honeycomb carrier (7) and a second filter screen (8) are sequentially arranged in the filter box (1) in the airflow direction, and each ceramic honeycomb surface is coated with anacid-resistant coating. The tail gas filter with the good black smoke filter effect is good in acid resistance; a tail gas comprising the main components of CO, HC and NOx is reacted to generate CO2,H2O, N2 and O2 under the four-stage filter of the first filter screen, the first ceramic honeycomb carrier, the second ceramic honeycomb carrier and the second filter screen; and meanwhile, micropores in a partition wall are capable of effectively filtering black smoke particles in waste gas, and the black smoke particles are combusted under the action of catalyst coatings, so that the purification effect for the tail gas is further improved.

The invention provides a detecting method and device for car wheel burglary prevention and relates to the field of car electronics. The detecting method and device for car wheel burglary prevention are used for detecting car inclining signals in a car wheel burglary scene. The detecting method comprises the steps that a wheel burglary prevention detecting system is started, and an acceleration sensor and a single chip microcomputer are initialized; an acceleration signal value is collected and subjected to de-noise processing, an acceleration signal is converted into an angle signal, the generated angle signal is stored, and a car-shaking signal value is calculated; the car-shaking signal value and a car static threshold value are compared, a car angle changing value is calculated according to the judging result; the car angle changing value and an angle waning threshold value are compared, a car angular speed and a static angular speed threshold value are compared according to the judging result; and an alarm gives an alarm according to the judging result. The detecting method and device for car wheel burglary prevention have the advantages that the system robustness is good, the filtering effect is good, the operation processing expense is small, the real-time capability is high, and the detecting method and device for car wheel burglary prevention are suitable for low-performance low-energy-consumption cheap processing chip operation, and the detecting device for car wheel burglary prevention is suitable for being integrated at a low-cost car safety monitoring system.

The invention provides a multi-channel filter. The multi-channel filter comprises an upper cylinder body and a lower cylinder body, a through hole a is arranged at the top of the upper cylinder body,and the through hole a sleeves a partial flow filter. The partial flow filter includes a feeding pipe, a liquid collecting chamber, and diverting pipes, the feeding pipe fits the size of the through hole a, and the liquid collecting chamber is internally hollow, and is in the shape of a circular table, the upper end face of the liquid collecting chamber is open, and is fixedly connected with the feeding pipe, and the lower end surface of the liquid collecting chamber i is provided with a plurality of openings. The openings are fixedly connected with the plurality of diverting pipes. The diverting pipes are hollow inside, and filter holes a are uniformly formed on the sidewalls and the bottom surface of the diverting pipes. The multi-channel filter can optimize the filtering step of raw materials and improve the filtering effect. The multi-channel filter has the advantages of simple structure, convenient cleaning and strong practicability.

The invention provides a humidifying filter assembly and an air conditioner. The humidifying filter assembly is used for the air conditioner and comprises a net frame, a filter net, a net cover and a water spraying assembly. The filter net is arranged on the net frame, the net cover covers the net frame, and the filter net is located between the net frame and the net cover. The water spraying assembly is connected with the net frame and close to the net cover. Water sprayed out of the water spraying assembly is used for wetting the filter net. Since the water spraying assembly is arranged, water sprayed out of the water spraying assembly wets the filter net, dust, impurities and other particulate matter in air can be attached to the filter net, at the moment, the particulate matter attached to the filter net can be mixed in flow water to drop down under the gravity effect due to the fact that the filter net has the certain degree of wetness, and therefore the filter effect of the humidifying filter assembly is improved. Further, the water spraying assembly is arranged, on the basis of not changing the original structure of the air conditioner, the contact area between flowing air and moisture is increased, the humidifying effect of the air conditioner is ensured, and the production cost is reduced.