89results about How to "Filter stable" patented technology

In regenerating a filter there are performed a first additional fuel injection involving additional injection of fuel into a cylinder after a main fuel injection in an engine to raise the temperature of an oxidation catalyst and a second additional fuel injection involving fuel injection after the first additional fuel injection to supply the oxidation catalyst with the fuel, a second additional fuel injection quantity is set in accordance with an engine speed and an engine load and is changed in accordance with an outlet temperature of the oxidation catalyst.

There is provided a hollow fiber membrane module (1) comprising: a membrane bundle (20) of a plurality of hollow fiber membranes (10); a cylindrical body (30) housing the membrane bundle (20); a fixing portion (40, 50) in which at least one end of the membrane bundle (20) is fixed to the cylindrical body (30); and a raw water outflow nozzle (34) for allowing raw water to flow out from the vicinity of the fixing portion (40). Raw water supplied into the cylindrical body (30) is allowed to permeate from the outside into the inside of each hollow fiber membrane (10). A soft potting portion (42) has, in its surface to be in contact with raw water, at least one groove (43).

An aggregate-removing filter material efficiently removes aggregates that are contained in a blood product for transfusion and may cause transfusion reactions without clogging, and exhibits excellent quality stability, and a blood product filtration method uses a filter apparatus that includes the aggregate-removing filter material and a leukocyte-removing filter material. The aggregate-removing filter material includes short fibers having a fineness of 0.7 to 4.0 dtex and a fiber length of 1 to 80 mm, and a ground fabric that includes long fibers, a fiber axis of the long fibers being oriented in a planar direction of the ground fabric, the short fibers being entangled with the ground fabric so that the aggregate-removing filter material has a total weight per unit area of 10 to 80 g / m2, and a layer of the short fibers forming a three-dimensional structure.

The invention discloses a thrombus filter, which comprises a filter tray, an elastic supporting frame and a central rod, wherein the filter tray is of a contractible structure; the filter tray is connected to the tail end of the central rod; the elastic supporting frame is connected to the upper end of the central rod; and a recovery end is arranged at the top end of the central rod. The thrombus filter disclosed by the invention is stably fixed in inferior vena cava, and is simple in recovery operation, strong in self-centered capacity, not easy for inclination and good in thrombus filtering effect.

The invention discloses an automatic backwashing filter and a working method, which are suitable for filtering impurities in sewage. The filter comprises a runner switching main valve, a valve plate and a barrel, the valve plate is arranged on an upper opening of the barrel, and the main valve is arranged on the valve plate and communicated with the interior of the barrel through a runner; two flow channels are arranged on the valve plate, one flow channel is a filtering flow channel communicated with the inner space of the filter screen, and the other flow channel is a backwashing flow channel communicated with the space between the filter screen and the cylinder body; the flow channel switching main valve comprises a valve body, a sewage draining exit, a water inlet and a water outlet are sequentially formed in the valve body from left to right, and a filtering outlet connected with the filtering flow channel and a backwashing outlet connected with the backwashing flow channel are sequentially formed in the lower portion of the valve body from left to right; wherein a two-position five-way reversing valve group capable of automatically switching a normal working mode or a backwashing mode according to the blockage condition of the filter screen is arranged among the drain outlet, the water inlet, the water outlet, the filter outlet and the backwashing outlet. The filter is simple in structure, does not consume energy, and automatically switches backwashing.

The invention relates to the technical field of sewage treatment, and in particular relates to a sewage filtering device. The sewage filtering device comprises a water inlet, a primary filtration pipe, a refined filtration pipe and a water outlet pipe which are sequentially arranged from top to bottom, wherein a deslagging pipe is arranged on the side wall of the primary filtration pipe, a filter screen is arranged in the primary filtration pipe, one end, far away from the deslagging pipe, of the filter screen is hinged with the inner wall of the primary filtration pipe; and a cobblestone layer, a quartz sand layer, a magnetite filtering material layer and an activated carbon layer are sequentially arranged in the refined filtration pipe from top to bottom. The sewage filtering device provided by the invention has the advantages that sewage with higher solid content can be rapidly and stably treated, impurities in the sewage are removed by virtue of the filter screen, then the sewage is further filtered by virtue of the refined filtration pipe, and granule impurities in the sewage are removed; then the sewage is subjected to disinfection treatment by virtue of an ultraviolet lamp irradiation tube in a diversion tube and is then discharged from the water outlet pipe after the disinfection treatment is finished, so that filtration of solid impurities in the sewage is realized; and meanwhile, the device provided by the invention has high filtering efficiency, good filtering effect and significance on promotion of the development of sewage treatment.

There is provided a hollow fiber membrane module (1) comprising: a membrane bundle (20) of a plurality of hollow fiber membranes (10); a cylindrical body (30) housing the membrane bundle (20); a fixing portion (40, 50) in which at least one end of the membrane bundle (20) is fixed to the cylindrical body (30); and a raw water outflow nozzle (34) for allowing raw water to flow out from the vicinity of the fixing portion (40). Raw water supplied into the cylindrical body (30) is allowed to permeate from the outside into the inside of each hollow fiber membrane (10). A soft potting portion (42) has, in its surface to be in contact with raw water, at least one groove (43).

An improved system for handling delicate linear media and in particular to a method and apparatus for winding delicate linear media such as superconducting wire or tape or optical fibers onto a spool. A combination of direct closed loop control and media routing design facilitates the handling of the delicate media without causing damage. The axial tension in the linear media may be closely controlled during winding by means of feedback control loop using tension measurements to control the rotation speeds of the wind-from and wind-to spools. Further, during winding, the delicate linear media is only exposed to large radius bends with no reverse bending. Finally, output devices and features, commercial or otherwise, made possible by delicate linear media handling are revealed. This includes advanced SC devices and features.

The invention discloses a nanofiltration membrane, a preparation method and application thereof. The nanofiltration membrane comprises a support bottom membrane and an active separation layer arrangedon the support bottom membrane, wherein the active separation layer has an interpenetrating network structure, and the interpenetrating network structure is mainly formed by interpenetrating polyamide formed by an interfacial polycondensation reaction of a polyethyleneimine monomer and an acyl chloride monomer with ultrafine nanofibers. The preparation method comprises the following steps: arranging an ultrafine nano-fiber layer on a micro-filtration membrane to prepare an ultrafine nano-fiber / micro-filtration membrane composite substrate; and carrying out an interfacial polycondensation reaction on a polyethyleneimine monomer and an acyl chloride monomer on the surface of the superfine nanofiber / micro-filtration membrane composite substrate, and carrying out heat treatment to obtain thenano-filtration membrane. The preparation method of the nanofiltration membrane is simple, and the obtained nanofiltration membrane has high flux and high salt rejection performance, so that the desalination energy consumption cost is reduced, and the nanofiltration membrane has a wide application prospect in the aspects of seawater desalination pretreatment, water softening and the like.

The invention relates to a gravity rotated casting pouring basin, which comprises a pouring basin body, the pouring basin body comprises a bottom and a side wall outwardly extended along the edge of the bottom; the pouring basin body is divided into a liquid inlet zone, a liquid filling zone and a casting gate in order along the cast liquid flow; the bottom is divided into a liquid inlet zone bottom, a liquid filling zone bottom and a casting gate bottom which are smoothly connected; and the liquid inlet zone bottom is an impact inclined plane. The gravity rotated casting pouring basin is capable of improving the flow characteristic of molten metal in the pouring basin and realizing the stable state casting of the molten metal.

The invention discloses a method for disposing wastewater from oil field, comprising the following steps: step 1, removing oil through electro-coagulation system; step 2, separating oil and water through air-floating Integral system; step 3, clarifying to remove impurities through ceramic membrane system; step 4, reverse osmosis desalination system for recovering. The method for disposing wastewater from oil field has the advantages of environmental protection, reduced energy consumption, reduced cost, resources recycling and easy operation, etc.

The invention relates to a purification method of sulfur-bearing flue gas, which belongs to the chemical field. The invention solves the technical problem of providing the purification method of sulfur-bearing flue gas with simple process steps. The purification method of sulfur-bearing flue gas comprises the following steps: a, a first dust removal is implemented to the sulfur-bearing flue gas through a cyclone dust collector; and b, the sulfur-bearing flue gas undergoing the first dust removal is filtered by a filter taking FeAl intermetallic compound porous material as a filtering element. Compared with the existing sulfur-bearing flue gas purification method, the invention eliminates the corresponding cooling equipment, shortens the process flow, improves the production efficiency, reduces the environmental pollution, lowers the production cost, and has broad application prospect.

The invention relates to a water treatment method and a water treatment device. In this water treatment method, a cycle is repeatedly performed including a filtration process for filtering water to betreated through a separation membrane from the primary side toward the secondary side thereof, and a backwashing process for backwashing the separation membrane from the secondary side toward the primary side. The water treatment method comprises a step for injecting ozone for use in the backwashing step into the separation membrane, and, when a preceding cycle of the repeated cycle is defined asa first cycle and a following cycle performed after the first cycle is defined as a second cycle, a step for setting the amount of ozone injected in the second cycle to be less than or equal to the amount of ozone injected in the first cycle.

A spiral wound membrane element allowing back wash reverse filtration at 0.05 MPa to 0.3 MPa is employed for a spiral wound membrane module. Air injection of injecting air of not more than 0.3 MPa into a permeate outlet of the spiral wound membrane module from a pressurized air feeder through a pipe, back wash reverse filtration with permeate and flushing with raw water are performed as recovery of a filtration velocity. Another spiral wound membrane module comprises a spiral wound membrane element including a separation membrane having high back pressure strength. Raw water into which bubbles are diffused by an air diffuser is fed to the spiral wound membrane element stored in a pressure vessel. Part of the raw water is axially fed through the spiral wound membrane element, discharged from a raw water outlet of the pressure vessel and thereafter returned to a raw water tank through a pipe.

The invention discloses a production method capable of replacing the conventional coarse phosphorus refining technology and producing yellow phosphorus with higher purity. The production method comprises the following steps: (1) feeding coarse phosphorus into a reaction vessel provided with a stirring device, adding the coarse phosphorus to hot water which is pre-fed into the reaction vessel and is kept at the temperature of 60-90 DEG C, then stirring until the yellow phosphorus is molten completely, adding activated carbon powder, of which the particle diameter is 80-500 [mu]m and the added weight is 0.2-2% of the adding weight of the coarse phosphorus, into the mixed slurry of the yellow phosphorus and the water, and fully mixing the activated carbon powder and the slurry through stirring; (2) feeding the slurry mixed with the activated carbon powder into a solid-liquid filtering separation system for filtering by a filtering element at the temperature condition of 60-90 DEG C, and controlling the solid content of the filtered out yellow phosphorus to be below 5mg / L; (3) feeding the filtered out yellow phosphorus to a poaching system to conduct at least three stages of poaching; 4) feeding the poached acceptable yellow phosphorus product to a product tank, and obtaining the yellow phosphorus product through further treatment.

The invention relates to an edible oil filling machine capable of filtering impurities and automatically replacing an oil tank. The edible oil filling machine capable of filtering the impurities and automatically replacing the oil tank comprises a machine body and oil injection nozzles, wherein an outer oil pipe is arranged above the middle part of the machine body and is in screw connection withthe machine body; the oil injection nozzles are arranged under the outer oil pipe and is in threaded connection with the outer oil pipe; a conveyor belt is arranged on the middle lower part of the machine body; the oil tank is arranged above the conveyor belt; a storage box is arranged under the machine body; support pillars are fixed to the bottom part of the machine body; an oil storage box is arranged above the inner part of the machine body; an oil inlet pipe is fixed above the oil storage box and is welded with the oil storage box; a valve is arranged in the middle of the oil inlet pipe;and a heating layer is arranged on the inner side of the oil storage tank. The edible oil filling machine capable of filtering the impurities and automatically replacing the oil tank is provided withthe multiple groups of oil injection nozzles, and the oil injection nozzles are equidistantly distributed under the outer oil pipe so as to be distributed uniformly, so that multiple groups of oil tanks can be conveniently filled at the same time.

There are provided a nanowire filter, a method for manufacturing the same, a filtering apparatus having the same, and a method for removing material adsorbed on the nanowire filter. The filtering apparatus includes: a filter having a supporting member and a plurality of nanowires supported on the supporting member and arranged in a crystallized state; and a body into which the filter is inserted and secured, and which has an inlet for guiding an introduced fluid to the filter and an outlet for discharging the fluid filtered through the filter to the outside.

The invention belongs to the field of purifier, and more specifically relates to a photocatalytic air purifier. The photocatalytic air purifier comprises an ultraviolet lamp, a catalyst storage box, apurifying structure, an air suction structure, a filtering structure, and a dedusting structure; the purifying structure used for purifying the air is connected with the catalyst storage box which isused for storing a catalyst; an air suction fan main body is turned on for suction of air into an air purifier main body, and driving of a fixing rod to rotate at the same time, a limit block is pushed, so that sliding of a first filter screen in a chute is realized, and dust falls onto a dust collecting tank through vibration; a spring is adopted to realize back and forth sliding of the first filter screen, in sliding process, a rubber block is pushed, so that air in the chute is blew onto the first filter screen through a gas outlet pipe, dust on the first filter screen falls onto the dustcollecting tank further, a second filter screen is adopted to prevent suction of dust into the chute, the first filter screen is driven to slide to drive a fixing plate for back and forth sliding, sothat a dust scraping plate is driven to slide back and forth in a protection hood 63 to scrape dust into a dust discharge tank and remove dust through scrapping.

The invention relates to the technical field of sewage treatment, and in particular relates to a sewage filtering device. The sewage filtering device comprises a water inlet, a primary filtration pipe, a refined filtration pipe and a water outlet pipe which are sequentially arranged from top to bottom, wherein a deslagging pipe is arranged on the side wall of the primary filtration pipe, a filter screen is arranged in the primary filtration pipe, one end, far away from the deslagging pipe, of the filter screen is hinged with the inner wall of the primary filtration pipe; and a cobblestone layer, a quartz sand layer, a magnetite filtering material layer and an activated carbon layer are sequentially arranged in the refined filtration pipe from top to bottom. The sewage filtering device provided by the invention has the advantages that sewage with higher solid content can be rapidly and stably treated, impurities in the sewage are removed by virtue of the filter screen, then the sewage is further filtered by virtue of the refined filtration pipe, and granule impurities in the sewage are removed; then the sewage is subjected to disinfection treatment by virtue of an ultraviolet lamp irradiation tube in a diversion tube and is then discharged from the water outlet pipe after the disinfection treatment is finished, so that filtration of solid impurities in the sewage is realized; and meanwhile, the device provided by the invention has high filtering efficiency, good filtering effect and significance on promotion of the development of sewage treatment.

The invention discloses a household sewage circulation treatment device based on wind energy. The device comprises a mounting casing and a filtering device, wherein a driving rotating shaft, fan blades, a driven rotating shaft, a drive belt, a rotating rod, a rotating pin, a rotating sleeve, a connecting rod, a piston plate, a water inlet pipeline and an effluent pipeline are arranged on the mounting casing; the filtering device is arranged at the right end of the mounting casing, a purification cavity, a drainage cavity, a connecting water pipe, a spraying water pipe, a water inlet hopper, afilter screen cylinder, an activated carbon package, a rotating shaft, a brush bristle sleeve, a drive impeller and a drainage pipeline are arranged in the filtering device. With the wind energy as power, energy conservation and emission reduction are guaranteed, and the device is more environmentally friendly during use; water can be effectively purified after being diffused by the filter screencylinder and the activated carbon package; besides, with the wind energy as power, cleaned water is sucked in and sprayed to drive the drive impeller to rotate, the brush bristle sleeve is driven to clean the inner wall of the filter screen cylinder, and the lasting purification effect is guaranteed.

The embodiment of the invention discloses an anti-interference device, an SIM card connection device and electronic equipment, relates to the field of a mobile terminal and aims at solving the problemthat in the prior art, cost is relatively high and stability is relatively low in an SIM card anti-interference process. The anti-interference device comprises a grounding module and a filtering module. The grounding module is connected with a grounding terminal in an SIM card connector. The grounding module is connected with one end of the filtering module. The grounding module is used for transmitting a first interference signal to the filtering module when the first interference signal exists in the SIM card connector. The filtering module is used for receiving and filtering the first interference signal. The embodiment of the invention is used for realizing an SIM card anti-interference function in the mobile terminal.

The invention relates to the technical field of lighting equipment, and discloses a lamp capable of releasing negative ions. The lamp comprises a mounting base plate and a connecting pipe, a crystal rock salt protective cover is fixedly mounted at the bottom of the connecting pipe, a negative ion generator is fixedly mounted in the crystal rock salt shield, a mounting rod located at the bottom ofthe negative ion generator is fixedly mounted in the crystal rock salt protective cover, and a lampshade is fixedly connected to the side, away from the crystal rock salt protective cover, of the mounting rod. According to the lamp capable of releasing the negative ions, a rotating plate is arranged in a connecting groove, the rotating plate is driven to rotate through a pull ring, and meanwhile,an auxiliary spring is compressed, so that a connecting block drives a rotating rod to break away from positioning of a mounting groove, the mounting base plate and the connecting pipe are conveniently disassembled, the connecting pipe can be mounted and dismounted conveniently, the mounting efficiency of the connecting pipe is improved, people can dismount and clean the connecting pipe conveniently, and normal use of the lamp is better guaranteed.

The invention discloses an impurity removal process for a lithium sulfate purified liquid, belongs to the technical field of lithium sulfate preparation, and aims to provide an impurity removal process for a lithium sulfate purified liquid to solve the problem that the existing lithium sulfate purified liquid contains small-particle impurities and Ca<2+> impurities of insoluble substances such as calcium carbonate and magnesium carbonate and slightly soluble substances such as calcium sulfate and the quality of subsequent lithium carbonate products is poor. The method comprises the following steps of: (1) filtering by adopting a precision filter, and filtering and intercepting insoluble substances such as calcium carbonate and magnesium carbonate and slightly soluble substances such as calcium sulfate in the lithium sulfate purified liquid; and (2) selectively adsorbing soluble Ca<2+> impurities in the lithium sulfate solution through an ion exchange resin column to finish deep purification of the lithium sulfate purified solution. The method is suitable for impurity removal of the lithium sulfate purification completion liquid.

An improved system for handling delicate linear media and in particular to a method and apparatus for winding delicate linear media such as superconducting wire or tape or optical fibers onto a spool. A combination of direct closed loop control and media routing design facilitates the handling of the delicate media without causing damage. The axial tension in the linear media may be closely controlled during winding by means of feedback control loop using tension measurements to control the rotation speeds of the wind-from and wind-to spools. Further, during winding, the delicate linear media is only exposed to large radius bends with no reverse bending. Finally, output devices and features, commercial or otherwise, made possible by delicate linear media handling are revealed. This includes advanced SC devices and features.

The invention belongs to the field of inorganic porosint and particularly relates to an asymetric membrane FeAl intermetallic compound porosint filter element and the application thereof. The filter element of the invention consists of a multiaperture support body and complex film; wherein, the multiaperture support body is in tubular shape or platy shape, the complex film is made in the following steps: a compound sizing agent is coated on outer surface of a single side of the multiaperture support body; and degreasing, bias diffusion, reaction synthesis and sintering are carried out to formthin-layer complex film with millipores. The millipores on the surface of the filter element is small and uniform, porosity is high, no dust is blocked inside filter material, filtering gas circuit is smooth, and resistance is small; in addition, the element has good resistance to high temperature oxidation / vulcanization and good normal temperature and high temperature mechanical properties. Theelement can directly carry out solid-gas separation on industrial gasses, bear top load and high-pressure and high-speed back washing, thus saving relative cooling devices, saving a large amount of water resources, avoiding cooling water treatment, lowering energy loss, shortening process flow and improving work efficiency.

The invention discloses a domestic sewage purification device for a high-rise building in a city and belongs to the field of sewage purification for the high-rise buildings. The domestic sewage purification device for the high-rise building in the city comprises a flushing filtering pipe, wherein the flushing filtering pipe fixedly sleeves a sewage discharging bottom pipe for the high-rise building through a connecting sleeve. The device can be connected with a water outlet end of the sewage discharging bottom pipe for the high-rise building on a bottom layer of the high-rise building; a multileveled filtering layer in the flushing filtering pipe is used for carrying out multileveled purification treatment on sewage discharged by the sewage discharging bottom pipe for the high-rise building and a purification effect is good; meanwhile, the multileveled filtering layer can rotate under the driving of a solenoid valve; when the device is used for carrying out filtering treatment, the filtering layer is horizontally arranged and is used for filtering; after the device is used for filtering for a period of time, the solenoid valve drives the filtering layer to overturn for 300 to 340 degrees; pure water is flushed through a flushing pure water pipe and is used for carrying out back-flushing on a back surface, so that the filtering effect of the flushing filtering pipe is ensured; sewage treatment is directly carried out on the bottom of a floor, the cost is relatively low and the consumption of energy sources is small.

The invention relates to a self-cleaning filtering device. Two layers of filter screens are used, the two layers of filter screens are mutually provided with flexible spines, and the self-cleaning function of the filter screens is realized through the action of water flow; meanwhile, a turbidity sensor is combined to assist in increasing the self-cleaning effect of the filter screen, so that the cleaning execution is ensured; and power of water is fully utilized, energy is saved, and meanwhile due to the fact that braking is executed according to the blockage condition of the filter screens during self-cleaning, the stability is good, the self-cleaning effect is good in cooperation with assistance of water pump pressurization, and the service life is long. The impact effect of water flow on the turbidity detector is fully utilized, so that dirt accumulation is avoided, and the turbidity detection effect is prevented from being influenced.

The invention discloses a filtration system. The filtration system is at least composed of a first booster pump, a first filter, a second booster pump, a second filter and a control unit which are connected in sequence; and the first filter is a double-column recoil type net replacing filter, the second filter is a melt automatic recoil type filter, and the control unit is connected with two pressure sensors located on the two sides of the first filter, pressure sensors located on the two sides of the second filter, the first booster pump, the first filter, the second booster pump and the second filter. The invention further discloses an operation technology of the filtration system. By means of the filtration system, automatic flushing of filtering nets of the second filter is achieved, when the differential pressure between a melt outlet and a melt inlet of the second filter is too large, the back washing process is automatically started, and the position and the movement distance ofa filter recoil shaft of the second filter are accurately controlled; and the line structural design is reasonable, the filtering pertinence of high-temperature melt is high, the filtering period islong, the filters are prevented from being frequently replaced, filtering is stable, and the filtering efficiency is high.

The invention discloses a domestic wastewater treatment device good in use effect and relates to the technical field of wastewater treatment. The domestic wastewater treatment device comprises a tankand is characterized in that the upper surface of the tank is provided with two feeding holes, a first bearing is connected to the upper surface of the inner wall of the tank in a clamped manner, a first rotary shaft is nested into the first bearing, and a plurality of stirring rods are connected to the surface of the first rotary shaft in a clamped manner. The domestic wastewater treatment devicegood in use effect has the advantages that a first bevel gear, second bevel gears, a motor, first gears, a second gear, crushing rods and retaining plates are coordinated, the second bevel gears drive the first bevel gear and the first rotary shaft to rotate to allow the crushing rods to rotate, wastewater can be poured into the tank through the feeding holes when the crushing rods rotate so as to crush food residues in the wastewater, filtering of large-size food residues is avoided, filtering device blocking caused by excessively large food residues is avoided, and wastewater filtering efficiency can be guaranteed to a certain degree.