33results about How to "Achieve direct separation" patented technology

The invention discloses an extraction method for directly separating feed or edible leaf protein of clover and relates to an extraction method of leaf protein of clover; the extraction method of the leaf protein of the clover comprises the following steps: the edible leaf protein needs to be processed secondarily, decolorized and fishy removed, the technology of decolorization and fishy smell removing of the leaf protein of the clover is still in the researching stage and the technique is not mature; the invention provides an extraction method for directly separating the feed or edible leaf protein of clover, which comprises the following steps: material processing, cleaning, chopping, beating, juicing, leaf protein concentration, condensate separation of leaf protein, drying and storing; and the extraction method of the invention can directly separate the feed or the edible leaf protein of clover without needing the technique of decolorization and fishy smell removing, and the like.

The invention discloses a highway and railway dual-purpose vehicle which comprises a vehicle frame. Lifting air bag installation seats are arranged between two longitudinal beams of the vehicle frame.Bearing air bag insertion holes are formed in lower cover boards of the longitudinal beams. Bearing air bag installation seats are arranged in the bearing air bag insertion holes. Force bearing sleeper beams are installed on the outer sides of the longitudinal beams. A suspension comprises an axle assembly with lifting air bags arranged on the middle portion at the front end. First-level bearingair bags are arranged on the two sides at the rear end of the axle assembly. The two first-level bearing air bags are provided with second-level bearing air bags. The lifting air bags are arranged onthe lifting air bag installation seats. The second-level bearing air bags are installed in the bearing air bag installation seats. Each single-axle bogie comprises a framework. Axle boxes are arrangedat the two ends of the bottom face of each framework. A first-system damping spring assembly is arranged between each axle box and the corresponding framework. Vehicle frame connecting assemblies arearranged at the two ends of the top face of each framework. The frameworks are arranged on the bottom faces of the force bearing sleeper beams through the vehicle frame connecting assemblies. The highway and railway dual-purpose vehicle is suitable for transport.

The invention discloses a method for green preparation of 5-hydroxymethyl furfural from monosaccharide. With the method provided by the invention, HMF is prepared by catalyzing the monosaccharide with glucose and fructose as raw materials, cheap and pollution-free zirconium phosphate, niobium phosphate and sulfated zirconia containing B acid and L acid as catalysts and a fixed bed as a reactor. The method has the advantages of mild operation conditions, simple process and easy industrialization, realizes green and continuous preparation of HMF in a gas phase, avoids usage of an organic solvent with high price and pollution to the environment, realizes direct separation of the catalysts and a product since the product is brought out from the reactor by carrier gas, and solves the problems of high cost and difficult product separation in the prior art.

The invention relates to a method for purifying methane at low temperature and belongs to biomass energy utilization industry. According to the method, carbon dioxide in dehydrated and desulfurized methane is condensed into liquid and separated out under high pressure and at low temperature in a pure physical mode; and the purified high-pressure methane can directly enter a compressed natural gas (CNG) commodity circulation field. The purification accuracy of the purified methane obtained by the method can reach over 95 percent, the flow is simple, energy consumption and running cost are low, any adsorbent is not consumed, carbon dioxide with a food grade can be obtained, and the method has good economic and environmental benefits.

The invention discloses a multi-channel blind source separation method for a space micro-motion group target. The method solves a multi-channel blind source separation problem of a micro-motion warhead group target, and requires that the number of echoes received by radar is greater than or equal to the number of warheads in the group target. The method comprises the steps of firstly, transmittinga single-frequency pulse signal by the radar to obtain a plurality of micro-motion echoes of n warheads; randomly setting a positive definite mixed matrix to obtain n-dimensional hybrid signals, andpreprocessing the n-dimensional mixed signals; establishing a four-order cumulant matrix according to the processed mixed signals, performing joint diagonalization, and establishing an objective function; establishing a Givens rotation matrix, and finding a unitary matrix meeting the objective function, namely, a demixing matrix; and reconstructing source signals. According to the method, the four-order cumulant matrix is established by utilizing the characteristics that micro-motion warhead echoes have non-Gaussian characteristics and the cumulant of more than three orders of signals based onmultivariate Gaussian distribution is zero, joint diagonalization processing is carried out, and finally each micro-motion warhead echo is separated out.

The invention discloses a recycling method of valuable metal from copper-cobalt white alloy, comprising the following steps: (1) adding one or several of matte, copper-nickel matte and scrap copper into a converter together with copper-cobalt white alloy; (2) controlling smelting temperature in the converter to be 1150-1400 DEG C, and blowing oxygen-containing gas into the converter, so that material in the converter reacts in an oxidizing atmosphere, to produce crude copper, cobalt-containing slag and flue gas; (3) separating the crude copper from the cobalt-containing slag, and recycling cobalt from the cobalt-containing slag. According to the method disclosed by the invention, by mixing and smelting the copper-cobalt white alloy with high melting point with matte / copper-nickel matte / scrap copper with low melting point, smelting temperature needed for independently smelting iron-cobalt-copper alloy is effective lowered, the energy consumption advantage of the process is prominent, the requirement of the refractory material is reduced, the process economic benefit is increased, the use amount of a slag forming constituent is small, and the method is relatively economical and environment-friendly.

The invention relates to an air-assisted adsorption separation method and device. Air-assisted adsorption separation is carried out on an air-assisted adsorption separation device. The device comprises an air flotation column with an air inlet, and an adsorbent film which is arranged on the top of the air flotation column and can continuously rotate, wherein solution which contains particles and organic matters or ion type substances to be separated fills the air flotation column until a liquid level is just in contact with the top adsorbent film; an air valve is started to control air to continuously pass through the air flotation column; generated bubbles carry the organic matters or ion type substances in the solution to be upwards transferred; after the bubbles are near the liquid level, the bubbles are captured by the adsorbent film which is driven by a motor to continuously rotate, mother liquor is taken out, and particles are intercepted in the mother liquid to finish an air-assisted adsorption separation process. The method has the advantages that the adsorbent can be easily recovered, the method can be directly suitable for complex solution systems which contain particles,no adsorbents are left, and the like, and the method has a good application prospect in the fields of target object selective separation and waste water treatment in complex solution.

The invention relates to a high-antimony bismuth-containing material treatment technology. The technology concretely comprises the following steps: 1, adding a certain amount of bismuth sulfide, limes, soda ash, iron filings and coke powder in the reduction smelting process of a high-antimony bismuth-containing material mainly containing Sb and a small amount of Cu impurity element in a reverberatory furnace, smelting at 500-700DEG C for 2-12h, and removing slag to obtain crude bismuth, lean slag and bonded slag; 2, dissolving the lean slag in a liquid alkali with the concentration of 20-60g / l, heating to 85DEG C, and reacting for 2-8h to make most antimony enter a liquid phase; and 3, adjusting the pH value of an alkaline solution obtained in step 2 to 4-7, heating to 40-85DEG C, reacting for 2-6h, and introducing air for oxidation to obtain crude sodium antimonite. Antimony and bismuth in the high-antimony bismuth-containing material can be directly separated in the smelting process of the reverberatory furnace through the high-antimony bismuth-containing material treatment technology, and the recovery rate of each of antimony and bismuth reaches above 95%.

The invention belongs to the technical field of rare earth recycling and particularly relates to a method for recycling rare earth by means of an asymmetrical capacitance type nickel metal hydride battery. According to the method, the asymmetrical capacitance type nickel metal hydride battery is disassembled to obtain a negative electrode material, after being crushed, the negative electrode material is dissolved into a hypochloric acid solution and subjected to standing, a hydrochloric acid solution is added, leaching and filtering are performed, and leachate and a filter cake are obtained; solid sodium carbonate is added into the leachate, a pH value is controlled, precipitate is generated, filtering is performed so that rare earth carbonate complex salt precipitate and filtrate can be obtained, and after the concentration of hydrochloric acid in the filtrate is adjusted, the filtrate returns to the leaching procedure to be cyclically utilized. In the method, the rare earth is directly separated from other metal, the rare earth recycling rate is high, the procedure is simple, cost is low, operation is convenient, and energy consumption is small.

The invention provides a method for manufacturing amorphous silicon doped on the back surface of an HBC battery. The method comprises the following steps of: growing an intrinsic hydrogenated amorphous silicon layer on the back surface of an N-type polished silicon wafer; printing boron slurry on the hydrogenated amorphous silicon layer, and drying the silicon wafer; printing phosphorus slurry onthe hydrogenated amorphous silicon layer, and drying the silicon wafer; putting the printed silicon wafer into a laser for laser doping to obtain square resistance values required to be reached by a Pregion and an N region; plating a mask on the surface of a battery piece as a polishing barrier layer; and cutting the position between the P region and the N region by using laser, and removing themask in the middle. The method provided by the invention can ensure the uniformity and growth rate of back doped amorphous silicon.

The invention discloses a tubular hydrogen isotope extraction pump based on a barium-zirconium ceramic. The tubular hydrogen isotope extraction pump comprises a proton conductor ceramic tube; an extraction pump is sleeved on the proton conductor ceramic tube; the extraction pump comprises an upper packaging shell and a lower packaging shell; an airtight flange, an anode conductive flange, a cathode conductive flange and an airtight gasket are sequentially arranged between the upper packaging shell and the lower packaging shell; connecting gaskets are arranged between the airtight flange and the anode conductive flange, between the anode conductive flange and the cathode conductive flange and between the cathode conductive flange and the airtight gasket respectively. A ventilation glass tube is arranged on the upper side of the upper packaging shell. The problem that in the prior art, hydrogen isotope separation energy consumption is too high can be solved, the condition requirement islow, the separation efficiency is high, and the reliability is high.

The invention discloses a hydrogen isotope extraction assembly for hydrogen-containing mixed gas under high-temperature conditions. The hydrogen isotope extraction assembly comprises an air inlet pipeline, a separation device and a collection pipeline which are connected in sequence; the separation device comprises a proton conductor ceramic membrane; the structures of the two ends of the proton conductor ceramic membrane are the same and are mutually symmetrical; the proton conductor ceramic membrane is provided with a copper electrode cylinder, the upper end of the copper electrode cylinderis provided with a flange electrode slice, the inner side and the outer side of the copper electrode cylinder are sleeved with an inner side insulating cylinder and an outer side insulating cylinder respectively, the upper portion of the inner side insulating cylinder is connected with an upper insulating ring in sleeving mode, the upper end of the inner side insulating cylinder is connected witha copper gasket, and an end flange is arranged on the upper side of the copper gasket. The problems in the prior art that, the temperature difference required for hydrogen separation of hydrogen-containing mixed gas is too large, the requirement for the mechanical property of existing materials is high, and hydrogen prepared through separation contains too many impurities can be solved, the condition requirement is low, the separation efficiency is high, and reliability is high.

The invention discloses a treatment system and a treatment process for removing polluted bottom mud of lakes, reservoirs and riverways. The treatment system comprises water body isolation equipment, slurry stirring equipment, centrifugal dewatering equipment and sludge storage and transportation equipment, wherein the water body isolation equipment, the slurry stirring equipment, the centrifugal dewatering equipment and the sludge storage and transportation equipment are communicated through pipelines, the water body isolation equipment comprises a plurality of isolation cavities capable of being spliced with one another and a crane for lifting and aligning the isolation cavities, the centrifugal dewatering equipment comprises a sludge conditioning and stirring system, a sludge-water separation system, a sludge dewatering system and a sludge cake spiral conveying and unloading system, the sludge storage and transportation equipment comprises a storage and transportation ship body, positioning piles for supporting the storage and transportation ship body and a mud bin located in the storage and transportation ship body, and a spiral discharging machine is arranged in the mud bin. According to the invention, the movable treatment station is adopted, all devices are arranged on a ship for operation, land resources are not occupied, the treatment method is simple, bottom mud and water body are directly separated, mud-water separation is implemented in real time, and the water content of dry mud is as low as 60%.

The invention provides a method for making the back of an HBC cell doped with amorphous silicon, comprising: growing an intrinsic hydrogenated amorphous silicon layer on the back of an N-type polished silicon wafer; printing boron paste on the hydrogenated amorphous silicon layer, Drying; printing phosphorous paste on the hydrogenated amorphous silicon layer, drying; putting the printed silicon wafer into the laser for laser doping, to obtain the required square resistance of the P area and the N area; giving the surface of the cell A mask is plated as a polishing barrier; the position between the P region and the N region is cut with a laser, and the mask in the middle is removed. The method of the invention can ensure the uniformity and growth rate of the back doped amorphous silicon.

The present invention relates to a continuous process method for preparing hydroquinone. The method comprises the following steps: (1) adding a sodium nitrite aqueous solution to a sulfuric acid solution of para-aminophenol in a dropwise manner to carry out a diazotization reaction to obtain a dark brown diazo solution; (2) continuously feeding methyl isobutyl ketone from the bottom, continuously feeding a copper sulfate solution from the middle part, collecting extraction residue water from the bottom, collecting an extraction oil layer from the upper overflow port, adjusting flow and in-out balance, and then continuously feeding a diazo solution from the middle part, wherein the extraction oil layer is subjected to precipitation, decoking and crystallization to obtain the hydroquinone finished product.

The invention relates to the field of transferring tools, in particular to a transferring tool for transferring object self separation. The transferring tool comprises a transferring tool body and a transferring object bearing table; a transferring head is arranged at the front end of the transferring tool body, and a conveying roller is further arranged insides; one end of a transferring object is wound on the conveying roller, a separator is arranged between the conveying roller and the transferring head, the transferring object is separated through the separator into two parts including a belt body and belt paste, and the other end of the belt body is wound on the transferring head; and the transferring object bearing table is arranged below the transferring tool body, a containing space is formed between the transferring tool body and the transferring object bearing table, the transferring object is contained in the containing space, and a guide part is arranged at the front portion of the transferring object bearing table. By means of the transferring tool, direct separation of the belt body and the belt paste of the transferring object can be achieved before rotary printing, contact fixation between the transferring object and the transferring object can be well achieved, and the transferring effect is good.

The invention discloses a seismic wave data separation method and device and a storage medium, and belongs to the technical field of seismic exploration. The seismic wave data separation method comprises the steps of obtaining a first depth-domain post-stack seismic wave data volume transformed from an original pre-stack seismic wave data volume of a target work area, performing iterative processing on the first depth-domain post-stack seismic wave data volume according to a heat conduction transformation equation which is deduced based on a heat conduction method and used for describing the variation of depth-domain post-stack seismic wave data in the target work area along the time so as to obtain a depth-domain post-stack reflected wave data volume, and determining the difference between the first depth-domain post-stack seismic wave data volume and the depth-domain post-stack reflected wave data volume as a depth-domain post-stack scattered wave data volume of the target work area.That is to say, scattered wave data can be separated from the seismic wave data by performing iterative processing on the depth-domain post-stack seismic wave data volume according to the heat conduction transformation equation, the accuracy of a separation result is high, the separation process is simple, and the separation efficiency is high.

The invention belongs to the technical field of rare earth recycling, and particularly relates to a method for recycling rare earth from an asymmetric capacitive type nickel-metal hydride battery. The method comprises the steps that the asymmetric capacitive type nickel-metal hydride battery is disassembled to obtain a negative electrode material, the negative electrode material is dissolved into a hypochlorous acid solution after being crushed, standing is carried out, a sulfuric acid solution is added, leaching and filtering are carried out, and lixivium and a filter cake are obtained; and solid sodium hydroxide is added into the lixivium, the pH value is controlled, precipitation is generated, rare earth sulfuric acid double salt precipitation and filter liquor are obtained through filtering, and after the concentration of sulfuric acid in the filter liquor is adjusted, the filter liquor is returned to the leaching procedure to be cyclically utilized. According to the method, the separation effect of the rare earth and other metal is good, the rare earth recycling rate is high, the process is simple, cost is low, operation is convenient, and energy consumption is low.

The invention relates to the field of energy and chemical industry, in particular to a system for extracting various valuable elements in paigeite. The system comprises a crusher, a vertical roasting furnace, a water spraying filter bin, a precipitator, a filter device and a material returning device. The system can directly process and crush iron ore. By means of the multiple steps of roasting, water spraying separation, pH value adjustment for iron precipitation, aluminum precipitation, magnesium precipitation, filtrate evaporation, crystallization and separation and the like, mineral substances in iron ore are directly separated, silicides, boron, iron, aluminum and magnesium in paigeite can be extracted, the equipment can complete separation of most mineral substances in paigeite, meanwhile, cyclic utilization of ammonia gas and ammonium sulfate is achieved, pollutant emission is extremely small, and environmental protection and high efficiency are achieved. The invention further provides a method for extracting various valuable elements in paigeite.

The invention discloses a method for extracting an edible leaf protein with high content of proteins and amino acids from fresh alfalfa, and the edible leaf protein extracted through the method. The method adopting a sectional temperature control process successfully realizes the direct separation of the alfalfa edible leaf protein in the extraction stage, significantly improves the purity and the quality of the edible leaf protein, and reduces the extraction energy consumption and the production cost. A pilot scale product contains 85-88% of protein and 75-78% of amino acids, the proportion of essential amino acids in the total amino acids is 51.56%, a ratio of the content of the essential amino acids to the content of nonessential amino acids is 1.06, and the proportion and the ratio are 28.9% and 76.7% higher than standard prescriptions of the United Nations Food and Agriculture Organization / World Health Organization (FAO / WHO) respectively. The method does not use any chemical reagents in the leaf protein extraction process, and has the characteristics of safety, high efficiency, low energy consumption, simple process, no pollution, realization of the scale production of the alfalfa edible leaf protein, and broad market prospect.

The invention relates to the field of transferring tools, in particular to a transferring tool for transferring object self separation. The transferring tool comprises a transferring tool body and a transferring object bearing table; a transferring head is arranged at the front end of the transferring tool body, and a conveying roller is further arranged insides; one end of a transferring object is wound on the conveying roller, a separator is arranged between the conveying roller and the transferring head, the transferring object is separated through the separator into two parts including a belt body and belt paste, and the other end of the belt body is wound on the transferring head; and the transferring object bearing table is arranged below the transferring tool body, a containing space is formed between the transferring tool body and the transferring object bearing table, the transferring object is contained in the containing space, and a guide part is arranged at the front portion of the transferring object bearing table. By means of the transferring tool, direct separation of the belt body and the belt paste of the transferring object can be achieved before rotary printing, contact fixation between the transferring object and the transferring object can be well achieved, and the transferring effect is good.

The invention relates to a method and device for belt-type adsorption separation. The belt-type adsorption separation is carried out on the belt-type adsorption separation device, and the device comprises an adsorption trough, a desorption trough, a washing trough and an adsorbent belt, wherein the adsorption trough, the desorption trough and the washing trough are connected sequentially by the adsorbent belt through pulleys and a motor drive wheel, the adsorption trough is filled with a solution containing particles and a to-be-separated substance, and the desorption trough is filled with a desorption liquid; and the washing trough is filled with a washing liquid. Under continuous stirring, the to-be-separated substance in the solution in the adsorption trough is captured by the adsorbentbelt, and is separated from the mother liquid, and then a belt-type adsorbent which performs circular rotation under the drive of a motor continuously passes through the desorption trough and the washing trough so as to complete desorption and washing; and the adsorbent is regenerated and recycled for adsorption. Compared with particle adsorption separation, the belt-type adsorption separation has the advantages of the adsorbent with easy recovery, direct application to a complex solution system containing particles, no residues of the adsorbent and the like, and the method and device have broad application prospects in biochemical separation, wastewater treatment and other fields.

The invention discloses a seismic wave data separation method and device and a storage medium, and belongs to the technical field of seismic exploration. The seismic wave data separation method comprises the steps of obtaining a first depth-domain post-stack seismic wave data volume transformed from an original pre-stack seismic wave data volume of a target work area, performing iterative processing on the first depth-domain post-stack seismic wave data volume according to a heat conduction transformation equation which is deduced based on a heat conduction method and used for describing the variation of depth-domain post-stack seismic wave data in the target work area along the time so as to obtain a depth-domain post-stack reflected wave data volume, and determining the difference between the first depth-domain post-stack seismic wave data volume and the depth-domain post-stack reflected wave data volume as a depth-domain post-stack scattered wave data volume of the target work area.That is to say, scattered wave data can be separated from the seismic wave data by performing iterative processing on the depth-domain post-stack seismic wave data volume according to the heat conduction transformation equation, the accuracy of a separation result is high, the separation process is simple, and the separation efficiency is high.

The invention relates to a fine processing method for impurities in building waste soil. The fine processing method comprises the following steps of forming mixed slurry: processing the building wastesoil by adopting a sludge dreg treatment device, and forming mixed slurry comprising substances such as gravel, soil, grass wood chips and water; performing stirring and processing, wherein the mixedslurry is stirred and processed in a stirring tank, so that the gravel, the soil and the grass wood chips are separated from each other; performing depositing and processing, wherein the mixed slurrystands in a transition pool and is subjected to settling and layering, and the weeding wood chips are preliminarily removed; performing inflating treatment, wherein inflation treatment is carried outon the mixed slurry with the weeding wood chips preliminarily removed in an inflation tank, the and weeding wood chips are further removed; and performing recycling, wherein the mixed slurry obtainedafter two-stage removal of the weeding wood chips are separated to obtain mud slurry and gravel, and the collected grass wood chips are recovered and utilized. By means of the fine processing method,the building waste soil can be used for producing high-quality building raw materials, and the grass wood chips can be effectively recovered.

The invention discloses a tube-type hydrogen isotope extraction pump based on barium-zirconium ceramics, which comprises a proton conductor ceramic tube, and an extraction pump is sheathed on the proton conductor ceramic tube. There are airtight flanges, anode conductive flanges, cathode conductive flanges, and airtight gaskets in sequence between the lower packaging shell, between the airtight flange and the anode conductive flange, the anode conductive flange and the cathode conductive flange Connecting gaskets are respectively arranged between the cathode conductive flange and the airtight gasket; a ventilation glass tube is arranged on the upper side of the upper packaging shell. The invention can solve the problem of high energy consumption of hydrogen isotope separation in the prior art, and has low condition requirements, high separation efficiency and strong reliability.

The invention relates to a fine processing method for impurities in building waste soil. The fine processing method comprises the following steps of forming mixed slurry: processing the building wastesoil by adopting a sludge dreg treatment device, and forming mixed slurry comprising substances such as gravel, soil, grass wood chips and water; performing stirring and processing, wherein the mixedslurry is stirred and processed in a stirring tank, so that the gravel, the soil and the grass wood chips are separated from each other; performing depositing and processing, wherein the mixed slurrystands in a transition pool and is subjected to settling and layering, and the weeding wood chips are preliminarily removed; performing inflating treatment, wherein inflation treatment is carried outon the mixed slurry with the weeding wood chips preliminarily removed in an inflation tank, the and weeding wood chips are further removed; and performing recycling, wherein the mixed slurry obtainedafter two-stage removal of the weeding wood chips are separated to obtain mud slurry and gravel, and the collected grass wood chips are recovered and utilized. By means of the fine processing method,the building waste soil can be used for producing high-quality building raw materials, and the grass wood chips can be effectively recovered.

The invention discloses a method for inducing megakaryoblast and megakaryocyte in vitro and a special culture medium thereof. The special culture medium is a serum free medium containing 50ng / mL of SCF, 50ng / mL of TPO, 20ng / mL of IL-3 and 50ng / mL of IL-6 StemSpan. The method comprises the following steps of: 1) separating single karyocyte from umbilical cord blood by using the conventional Ficoll density gradient centrifugation method, wherein red blood cells in the umbilical cord blood are settled by 6 percent hydroxyethyl starch; and 2) culturing the single karyocyte in vitro for 4 to 14 days by using the special culture medium at 37 DEG C in the presence of 5 percent CO2 to obtain a mixture of the megakaryoblast and the megakaryocyte. The invention provides a source for supplementing the megakaryoblast and the megakaryocyte, and has the advantages of simple operation, low cost, high differentiation efficiency and the like. The method is about to play an important role in the field of medicaments, and has wide application prospect.

The invention provides an anti-blocking filtering basin and a working method thereof. The anti-blocking filtering basin comprises a filtering basin. A flow direction partition cover is arranged in thefiltering basin. The interval space of the flow direction partition cover and the filtering basin is a current down channel, and a water inlet is formed in the upper portion of the current down channel. A filter is arranged in the flow direction partition cover, and an opening is formed in the bottom of the flow direction partition cover. The interval space of the side wall of the partition coverand the filter is a current up channel. A water collecting channel is formed in the filter and communicated with the exterior of the filtering basin through a water producing pipe. The anti-blockingfiltering basin has the advantages that the filter is flushed by bubbles generated by an air distributing device, meanwhile, the filter swings in water through decrease of the water level, and the filter is further flushed; the effects of gravity and buoyancy are fully utilized, and incoming flocculating water is automatically divided into high-turbidity currents and low-turbidity currents; large-particle sludge is directly separated, the load and losses of the filter are reduced accordingly, and a settling pond and a sand filter can be replaced at the same time.