43results about How to "With regenerative function" patented technology

The invention relates to fog seal modified emulsified asphalt which comprises the following components by weight: 18-35% of asphalt, 8-18% of an asphalt modifying agent, 5-12% of an asphalt regenerating agent, 1-4% of a compound emulsifying agent and 50% of water. The preparation method comprises the following steps: directly adding the asphalt modifying agent and the asphalt regenerating agent to hot melt asphalt for mixing to prepare modified asphalt; mixing and emulsifying the modified asphalt and an aqueous solution of the compound emulsifying agent through a colloid mill; and mechanically stirring to prepare the fog seal modified emulsified asphalt. The prepared fog seal modified emulsified asphalt has the advantages of good storage stability, good water dilutability, environmental protection in use, good surface consolidation performance after construction, good abrasion resistance, difficult sticking off by wheels, short traffic close time, improvement of construction conditions, improvement of construction efficiency, good water seal function, asphalt pavement water damage prevention, pavement structure protection and extension of pavement service life.

The invention provides a high-stability microcapsule used for asphalt self-repair. The microcapsule is characterized in that the microcapsule adopts polymers as wall materials and commercially available asphalt regenerant liquid as a core material; the mass ratio of the wall materials to the core material is (3:1)-(1:3); the polymers used as wall materials are melamine resin, methyl modified melamine resin, phenolic resin, epoxy resin, unsaturated polyester resin and polymethyl methacrylate resin; the core material is an asphalt regenerant, is oily liquid capable of dissolving aged asphalt and has the function of regenerating aged asphalt; after the microcapsule is mixed with molten asphalt at 200 DEG C for one hour, 95% of microcapsule is in a complete state and does not crack; the microcapsule is mixed with asphalt to generate microcracks in the asphalt aging process to crack the microcapsule and the asphalt regenerant is released to self-repair aged asphalt, thus greatly prolonging the service life of asphalt.

The invention provides a cleaning agent that is applicable to clean hollow fiber ultrafiltration membrane, which comprises the compounds (percentage by weight): anhydrous sodium carbonate accounts for 25-45 percent, trisodium phosphate accounts for 5-20 percent, anhydrous sodium sulfate accounts for 2-5 percent, ethylene diamine tetraacetic acid tetrasodium salt (EDTA-4Na) accounts for 5-15 percent, sodium percarbonate accounts for 0-33 percent, emulsifying agent SAS accounts for 8-15 percent, peregal-25 accounts for 0-5 percent and dodecyl sodium sulfate accounts for 4-10 percent. The compounds are added into an enamel reactor with a stirrer and a grinder in sequence to be stirred for 2-3 hours, thus obtaining the cleaning agent through grinding the mixture evenly. The invention has simple preparation and is particularly applicable to clean hollow fiber ultrafiltration membrane such as ultrafiltration oily wastewater, organic wastewater, protein concentration, etc.; the invention has strong decontamination direction, high effect and low cleaning cost.

The invention discloses a cleaning agent for a ceramic membrane for oilfield produced water, and overcomes the deficiency that the ceramic membrane for the oilfield produced water does not have an effective cleaning method and an effective cleaning formula. The cleaning agent comprises a component A, a component B and a component C, wherein effective constituents of the component A are sodium hydroxide and sodium alkyl benzene sulfonate; effective constituents of the component B are sodium hydroxide, sodium alkyl benzene sulfonate, ethylene diamine tetraacetic acid sodium salt, triethanol amine and sodium tripolyphosphate; and effective constituents of the component C are sodium hydroxide, sodium alkyl benzene sulfonate and hydrogen peroxide. The cleaning agent aiming at characteristics of the oilfield produced water has the advantages that dirt on the surface of the membrane and in membrane holes can be removed rapidly and efficiently, the cleaning frequency of the membrane is reduced, the cleaning temperature and the cleaning time are greatly reduced, the permeation flux of the ceramic membrane is recovered rapidly and efficiently, and the regeneration of a system is accelerated.

The invention discloses a double-layer composite cerebral dura mater, and a preparation method thereof. According to the preparation method, medical purified pig dermis is modified with a cross-linking agent so as to obtain a matrix layer; the matrix layer is coated with a degradable high molecular membrane solution via coating method, and then is subjected to water washing and drying so as to obtain the double-layer composite cerebral dura mater. The double-layer composite cerebral dura mater repairing material is excellent in flexibility, mechanical properties, biocompatibility, and biodegradability, and is capable of preventing cerebrospinal fluid leakage and brain tissue adhesion effectively. Compared with electrostatic spinning, the coating method is capable of increasing peel strength of the matrix layer with an impervious layer; and application prospect of the double-layer composite cerebral dura mater repairing material is promising.

The invention relates to a magnesium-containing hydroxyapatite coating on the surface of a medical material. The coating comprises Ca10(PO4)6(OH)2 and Mg10(PO4)6(OH)2, wherein the Mg10(PO4)6(OH)2 accounts for 0-10% of the total mass of the coating. The preparation method of the magnesium-containing hydroxyapatite coating on the surface of the medical material comprises the following steps: a, hydro-thermal treatment; b, magnesium doping treatment; and c, hydro-thermal treatment. The preparation method of the magnesium-containing hydroxyapatite coating on the surface of the medical material is simple and easy to operate, and the magnesium-containing hydroxyapatite coating on the surface of the medical material has the functions of inducing bone tissue regeneration, and regulating osseous growth and remodeling.

The invention discloses a cleaning agent suitable for cleaning hollow fiber nanofiltration membranes and a preparation method thereof. The cleaning agent is prepared from, by mass, 0-4% of citric acid, 0-60% of hydrochloric acid, 0-0.5% of oxalic acid, 0-4% of sodium tripolyphosphate, 0-20% of sodium carbonate, 0-0.3% of sodium hydroxide, 0-2% of trisodium phosphate, 0-4% of sodium sulfate, 0-5% of sodium hydrogen sulfite, 0-10% of ethylenediaminetetraacetic acid, 0-0.1% of alkyl sodium sulfonate, 0-0.3% of sodium dodecyl benzene sulfonate, 0-0.3% of sodium dodecyl sulfate and the balance water, wherein the mass percentage of water is not larger than 98%. All the components are sequentially added in proportion to a stirring enamel reactor and stirred and mixed to be uniform at room temperature. The cleaning agent is easy to prepare, high in decontamination pertinence, efficient, low in cleaning cost and especially suitable for cleaning away calcium carbonate scale, calcium sulfate scale, strontium sulfate scale, barium sulfate scale, metal oxide and metal hydroxide of the hollow fiber nanofiltration membranes and cleaning colloid contaminated and biologically contaminated nanofiltration membranes.

The invention relates to a porous high-oil-absorption resin and a preparation method thereof. The high-oil-absorption resin is prepared by radical-triggered composite emulsion polymerization of a monomer in the presence of a cross-linking agent, a trigger and an emulsifier and in a protective atmosphere of nitrogen. The high-oil-absorption resin in a small volume has high oil absorption rate and can absorb only oil but not water; after absorbing oil, the resin becomes a block and is easy to recover; with a density smaller than that of water, the resin can float on water and thus can well treat floating oil; and the resin has a certain application value in fields of petroleum, chemicals, environment protection and medicines.

The invention relates to air purification equipment with high purification precision and a filter element regeneration function. The air purification equipment comprises a main body, wherein the mainbody is internally provided with a PLC (Programmable Logic Controller), an air exhausting device, a purification pipe, a communication pipe, a regeneration box, a connection pipe, a pushing mechanismand a switching mechanism; each of the communication pipe and the connection pipe is internally provided with a stopping mechanism; the purification pipe is internally provided with two fixing mechanisms; each fixing mechanism comprises an activated carbon filter element and two locking units; the switching mechanism comprises a movable unit, a hoisting bock and a clamping unit; the movable unit comprises a first motor, a rotary table, a second motor, a screw rod and a connecting rod. According to the air purification equipment with the high purification precision and the filter element regeneration function, the activated carbon filter element at the top in the purification pipe can be moved into the regeneration box at a fixed period through the switching mechanism and harmful gas adsorbed in the activated carbon filter element is decomposed through photocatalysis; the activated carbon filter element can be regenerated; after the activated carbon filter element is discarded, the harmful gas adsorbed in the activated carbon filter element can be prevented from being volatilized to pollute the environment.

The invention belongs to the technical field of aquatic animal molecular biology DNA sample preparation, and concretely relates to a method for extracting DNA from a shrimp shell of procambarus clarkia. The method comprises the following steps: cutting the shrimp shell of the procambarus clarkii immersed in an ethanol solution, adding a proper amount of a tissue lysate, EDTA, dithiothreitol, protease K and the like in a centrifuge tube, carrying out processes of water-bath cracking, ammonium acetate extraction and the like to obtain the total DNA of procambarus clarkia. The method of the invention has the advantages that the operation is simple and convenient, the used reagent enables small toxicity, less injury on the experimental animals when sampling is carried out, the samples are easy to be preserved for long-term, the degradation degree of the extracted DNA is lower than the degradation degree of the extracted DNA from the shrimp tail muscle. The prepared DNA can be used for diversity analysis of procambarus clarkii population genetics and the relative molecular biology application.

The invention discloses a low-temperature pump system with a regenerating function. The low-temperature pump system comprises a cold pump shell, a cold head, a cold pump control module and a heating module, wherein the cold head is positioned in the cold pump shell, and is used for adsorbing gas in the cold pump shell in a vacuum state, and gas covers the cold head after being condensed; the cold pump control module is used for controlling a vacuum adsorbing process of a low-temperature pump and a regenerating process of the low-temperature pump; the heating module is arranged in the cold pump shell; and in the regenerating process of the low-temperature pump, the heating module is used for heating the cold pump shell to prevent heat transmission from being quickened due to the fact that nitrogen gas is introduced in the regenerating process of the low-temperature pump, and therefore, the temperature of the cold pump shell is prevented from being lower than the environment temperature to generate condensed water.

The invention relates to the technical field of filtering equipment and provides a filter which can filter particles and has a regeneration function. According to the technical scheme, the filter comprises a shell, a metal fiber mat filtering piece, an electrode connection part and adhesive pieces; the shell is provided with a flow hole penetrating through the two ends of the shell; at least one part of the metal fiber mat filtering piece is arranged in the flow hole and is in sealing fit with the wall of the flow hole in the circumferential direction; the part, in the flow hole, of the metal fiber mat filtering piece serves as the first part, and at least one part of the first part is bent along a trace to be of a layered bent structure; a groove is formed between every two adjacent layers of the layered bent structure, and an opening of each groove is opposite to an opening in one end of the flow hole; the electrode connection part comprises at least one positive pole connection part and at least one negative pole connection part; the positive pole connection parts and the negative pole connection part are electrically connected with the metal fiber mat filtering piece; and the adhesive pieces are arranged between every two adjacent layers of the layered bent structure.

The invention relates to an exhaust gas purifier. It includes a filter box (1), which is equipped with a filter screen (2), a ceramic honeycomb carrier (3) and a low-temperature catalytic zone. The left end of the filter box (1) is equipped with an air supply device (8), and the right end There are drainage holes (9), and the coating process of the honeycomb carrier includes step 1, batching; step 2, taking slurry; step 3, coating; and step 4, firing. The coating process of the exhaust gas purifier and the honeycomb carrier of the present invention, the exhaust gas is reacted into CO2 and H2O under the three-stage filtration of the filter screen, the ceramic honeycomb carrier and the low-temperature catalytic zone, and the micropores on the next wall can filter the soot in the exhaust gas Particles, and the soot particles will be burned under the action of the catalyst coating; the coating process is not only uniform, but also the coated slurry can be fully combined with the ceramic support, so that the filtering effect of the ceramic support is good.

A visual system used in a particle trapping process of a diesel engine belongs to a visual device for directly observing the process of trapping particles in tail gas of the diesel engine in an online manner. An outlet, which guides in air, of a preheater is communicated with a main body section, a tail gas sampling heating tube which guides in the tail gas of the diesel engine is communicated with the main body section via a pipe, a gas outlet of the main body section is successively connected with a cooler, a dryer, a filter, a mass flowmeter and a vacuum pump, and an outlet of the vacuum pump is connected with evacuation tube; a gas inlet of the main body section is provided with a temperature sensor and a pressure sensor, the gas outlet of the main body section is also provided with a temperature sensor and a pressure sensor, and a thermocouple temperature sensor extends into a filtering medium in the main body section; and the main body section is provided with a visual window for observation of a visual instrument. The visual system can be used for directly observing a particle trapping process of various filtering media in an online manner under working conditions of various temperatures and various flows, and has the advantages of convenience in assembly and disassembly, reliable performances and the like.

The invention relates to a tail gas purifier comprising a filter tank (1); a filter screen (2), a ceramic honeycomb carrier (3) and a low-temperature catalysis region are sequentially arranged inside the filter tank (1) along an air flow direction; the left end of the filter tank (1) is provided with an air supply device (8); a drain hole (9) is formed in the right end of the filter tank (1); and the front end of the filter tank (1) is provided with a spray head (11). According to the tail gas purifier disclosed by the invention, firstly, acidic components in tail gases are eliminated by virtue of sodium carbonate mists, then, the tail gases taking CO, HC and NOx as main components react to generate CO2,H2O, N2 and O2 under three-stage filtration of the filter screen, the ceramic honeycomb carrier and the low-temperature catalysis region, and meanwhile, soot particles in exhaust gases can be effectively filtered through micropores in a partition wall and can be combusted under the action of a catalyst coating, so that the ceramic honeycomb carrier has a regeneration function and can be used for further filtering and purifying the soot particles.

The invention discloses a filter-type air dryer, which comprises an air inlet device, a first drying tank arranged on one side of the air inlet device and communicated with the air inlet device, and a communication device arranged on one side of the first drying tank , and the second drying tank arranged on one side of the communication device; the first drying tank includes a first tank body, and saturated ceramic balls filled inside the first tank body; the second drying tank includes a second tank body , and the unsaturated ceramic balls filled inside the second tank, and the outlet arranged under one side of the second tank and communicated with the second tank; There are saturated alumina ceramic balls and unsaturated alumina ceramic balls, which can dry the air and filter at the same time, which can improve the cleanliness of the air, and the alumina ceramic balls used to filter dry air have regeneration function, which can Continuous use, so it has the advantages of good drying effect, low energy consumption and long service life.

The invention relates to an automobile exhaust gas purifier with high emission standard. The purifier comprises a filter box (1), the filter box (1) comprises a main pipe (2) in the upper part and a sub-pipe (5) with two branch pipes in the lower part, exhaust fine pipes (4) and ceramic honeycomb carriers (3) are arranged inside the sub-pipe (5), and a spray chamber (7) and a selective catalytic reduction converter (8) are arranged in an exhaust outlet of the filter box (1). According to the automobile exhaust gas purifier with high emission standard, two-level filtration is conducted through the exhaust pipe and the ceramic honeycomb carrier, the tail gas is transformed into CO2 and H2O after reaction, in the meantime micropores in a partition wall can effectively filter out soot particles in the exhaust gas, and the soot particles can be burnt off under the action of the catalyst coating, with a regenerative function. After the exhaust gas is distributed to the branched pipes from the main pipe, the filter area is enlarged in the limited space, oxynitride is removed in the selective catalytic reduction converter, and the discharged exhaust gas satisfies the national V standard.

The invention provides a regeneration filter device for fine particles. The device is characterized in that a filter device body includes at least two layers of filter boxes; multiple clamping ports with the same gaps are formed in the upper ends of two opposite side walls of the filter boxes; filter modules are matched with holding spaces divided in the filter boxes, and are fixedly clamped in the filter boxes through the clamping ports; metal fiber felts for filtering are arranged in the filter modules in a triangular array form; absorption heat conducting layers are arranged between every two layers of filter boxes, and are carbon fiber felts; and the absorption heat conducting layers are connected with external heating equipment. The filter device has multiple layers of filter boxes; the layer number can be set according to actual demands to satisfy the filter demands under various conditions; in addition, large particles in tail gas can be effectively absorbed according to an arranging form of the metal fiber felts; one part of gasifiable impurities are decomposed through a heating mode to prevent blockage of filter holes; and the filter device has such advantages as simple structure and high practicability.

The invention discloses a boosting type air purifier with hollow plates, and an assembling method of a module core of the air purifier, and belongs to the technical field of air purification. The boosting type air purifier comprises a box, a rough-filtering purifier, a hollow-plate boosting type air purifier module core, two guide rails, a fan, a positive-voltage flyback transformer and a negative-voltage flyback transformer. The hollow-plate boosting type air purifier module core comprises more than two positive-electrode hollow plate components, more than two negative-electrode hollow plate components, and more than four 0-electrode hollow plate components. The positive-electrode hollow plate components, the negative-electrode hollow plate components, and the 0-electrode hollow plate components are electrically connected with the positive-voltage flyback transformer and the negative-voltage flyback transformer, the positive-electrode hollow plate components and the 0-electrode hollow plate components generate the voltage in the range of +4000V to +12000V, and the negative-electrode hollow plate components and the 0-electrode hollow plate components generate the voltage in the range of -4000V to -12000V. The module core body is cut by heating with electric wires and formed as a whole. The boosting type air purifier has the advantages of high once purification rate, no ozone increment, long effect, and favor of integral assembly.

The invention discloses a phthisis rehabilitation Huichun pill and a preparation method thereof. The traditional prescription can produce medicine resistance and hardly achieves the cure purpose in a short term. The phthisis rehabilitation Huichun pill comprises the following components of 5.3liang of placenta, 0.6liang of medlar, 0.8liang of red ginseng, and 0.36liang of pearl powder. The Chinese medicine is used for remedying phthisis, bone tuberculosis and lumbar tuberculosis in hemoptysis period.

The invention discloses a method for treatment of coked sludge through ultrasound and modified cyclodextrin. A modified cyclodextrin polymer with regular morphology is wrapped with a filter net and put in to-be-treated coked sludge, the coked sludge is put in an ultrasonic generator, the frequency and the sound intensity of the ultrasonic generator are adjusted, and time for harmless treatment on the coked sludge is set for the ultrasonic generator. The method is applicable to treatment of harmful ingredients of the coked sludge, ultrasound is used as an supplementary means for the coked sludge, the adsorption rate is increased, and the treatment capability of modified cyclodextrin is improved; the speed for treating the coked sludge through modified cyclodextrin is increased; the odor of the coked sludge can be comprehensively reduced, and the chromaticity of the coked sludge can be comprehensively improved; used modified cyclodextrin has a regeneration function and a good industrial application prospect and is high in utilization efficiency and low in cost.

The invention discloses a slow-release salt-melting material for road surface thin ice and an ice-inhibiting fog sealing layer material. An ice-melting salt is dissolved into high-temperature water atthe maximum concentration to prepare a saturated solution of the ice-melting salt, diatomite powder is added to adsorb and store ice-melting salt ions to obtain an adsorption salt, the adsorption salt is dried and crushed to obtain the slow-release salt-melting material, and the slow-release salt-melting material is mixed with slow-breaking emulsified asphalt to obtain the ice-inhibiting fog sealing layer material. The diatomite salt storage material in the ice-inhibiting fog sealing layer absorbs water when being wetted and escapes along with salt, and the demulsification curing time is shorter than that of a pure emulsified asphalt fog sealing layer, so that rapid opening of traffic is facilitated; meanwhile, the diatomite can adsorb the asphalt droplets, a large amount of structural asphalt with a high strength is formed around the asphalt droplets, and the durability of the pure emulsified asphalt fog sealing layer is improved.

The invention relates to fog seal modified emulsified asphalt which comprises the following components by weight: 18-35% of asphalt, 8-18% of an asphalt modifying agent, 5-12% of an asphalt regenerating agent, 1-4% of a compound emulsifying agent and 50% of water. The preparation method comprises the following steps: directly adding the asphalt modifying agent and the asphalt regenerating agent to hot melt asphalt for mixing to prepare modified asphalt; mixing and emulsifying the modified asphalt and an aqueous solution of the compound emulsifying agent through a colloid mill; and mechanically stirring to prepare the fog seal modified emulsified asphalt. The prepared fog seal modified emulsified asphalt has the advantages of good storage stability, good water dilutability, environmental protection in use, good surface consolidation performance after construction, good abrasion resistance, difficult sticking off by wheels, short traffic close time, improvement of construction conditions, improvement of construction efficiency, good water seal function, asphalt pavement water damage prevention, pavement structure protection and extension of pavement service life.

The invention relates to the field of filtrating equipment, and provides a filter which can filter particulate matters and has a regeneration function, so as to purify air and improve the air quality. The employed technical solution is that the filter comprises a housing, a metal fiber felt filter element and an electrode connecting part, wherein a flow through hole penetrating both ends is formed in the housing; at least one part of the metal fiber felt filter element is disposed in the flow through hole; the metal fiber felt filter element is matched with the hole wall of the flow through hole in a circumferential sealing manner; the part of the metal fiber felt filter element disposed in the flow through hole is taken as a first part; at least part of the first part is bent along a trajectory in the first direction to form a layered bending structure; a groove is formed between two adjacent layers of the layered bending structure; an opening of the groove is opposite to the opening in one end of the flow through hole; the electrode connecting part comprises at least one positive electrode connecting part and at least one negative electrode connecting part; the positive electrode connecting part and the negative electrode connecting part are electrically connected with the metal fiber felt filter element.

The invention provides a multipurpose machine for filtration, concentration and washing. The machine comprises a base, a front bracket, a rear bracket, a front support plate, a rear support plate, a hydraulic oil cylinder, an oil cylinder seat, a movable pressure plate, an impeller, a filter plate, a washing filter plate, a center shaft, a reduction gearbox, a motor, a regulation valve, a filtrate branch pipe and a filtrate manifold, wherein the front and rear brackets are arranged on the base; the hydraulic oil cylinder is arranged on the front bracket through the oil cylinder seat; one end of the center shaft is arranged on the movable pressure plate in a sleeving manner, and horizontally penetrates through the impeller, the filter plate, the washing filter plate and a rear support seat in sequence, and the other end of the center shaft is connected with an output shaft of the reduction gearbox; the motor and the regulation valve are arranged on the reduction gearbox. The multipurpose machine is compact in structure; materials can be continuously fed, and filter cakes can be discharged during filtration, so that the machine is high in production efficiency and productivity; the machine automatically runs, so that the operation intensity is low; the machine is convenient to operate and maintain, and low in production cost and has the energy-saving effect, and the consumption is lowered; a cross flow filtration mode is adopted, so that a filter cloth regeneration function is realized; the machine is wide in application range.

The invention discloses a corrosion-resistant plastic rope and a production process thereof. The production process comprises the steps of mixing modified polyethylene, plant cellulose fibers, a plasticizer, a foaming agent, a corrosion inhibitor and a dispersing agent to obtain a blended material, putting the blended material into a film blowing machine to prepare a plastic film, cutting the plastic film into a plurality of plastic tapes, twisting the plastic tapes by a twisting machine, obtaining a plastic rope, baking the plastic rope, cooling the plastic rope to the room temperature through cold air cooling, and obtaining the anti-corrosion plastic rope. By baking the twisted plastic rope added with the plasticizer, the connection strength between plastic tapes is enhanced, gaps in the plastic rope are reduced, the compactness of the plastic rope is improved, the breaking strength of the plastic rope is improved, and alkyl active free radicals generated in oxidative degradation of modified polyethylene are captured by adding the corrosion inhibitor, so that chain reaction is inhibited to achieve the anti-corrosion effect.

The invention discloses a double-layer composite cerebral dura mater, and a preparation method thereof. According to the preparation method, medical purified pig dermis is modified with a cross-linking agent so as to obtain a matrix layer; the matrix layer is coated with a degradable high molecular membrane solution via coating method, and then is subjected to water washing and drying so as to obtain the double-layer composite cerebral dura mater. The double-layer composite cerebral dura mater repairing material is excellent in flexibility, mechanical properties, biocompatibility, and biodegradability, and is capable of preventing cerebrospinal fluid leakage and brain tissue adhesion effectively. Compared with electrostatic spinning, the coating method is capable of increasing peel strength of the matrix layer with an impervious layer; and application prospect of the double-layer composite cerebral dura mater repairing material is promising.

The invention relates to an automobile exhaust gas purifier. It comprises a filter box (1), the filter box (1) includes a main pipe (2) located at the upper part and two branched branch pipes (5) at the lower part, and an exhaust thin pipe (5) is arranged in the branch pipe (5). 4) and the ceramic honeycomb carrier (3), the coating process of the honeycomb carrier includes step 1, batching; step 2, taking slurry; step 3, coating; step 4, firing. The invention is a coating process for an automobile exhaust gas purifier and a honeycomb carrier, which utilizes two-stage filtration of an exhaust thin pipe and a ceramic honeycomb carrier to react the exhaust gas into CO2 and H2O, and the micropores on the next wall can filter the soot particles in the exhaust gas. , and the soot particles will be burned off under the action of the catalyst coating; after the main pipe is branched to the branch pipe, the filtering area is increased in a limited space; the coating process not only coats evenly, but also coats the slurry. The material can be fully combined with the ceramic carrier, so that the filtration effect of the ceramic carrier is good.