39results about How to "Enhanced stripping ability" patented technology

The invention relates to a scale removing agent applicable to alkaline-surfactant-polymer flooding and a scale removing and unfreezing process, and mainly solves the problems that the effect is poor when an alkaline-surfactant-polymer flooding oil well adopts conventional chemical scale removal. The scale removing agent is characterized by consisting of the following components in proportions according to weight percent: 9-10% of hydrochloric acid, 1-2% of hydrofluoric acid, 2% of glacial acetic acid, 1.0% of corrosion inhibitor, 0.5-1.0% of triethanolamine, 2.0% of ammonium chloride, 0.2% of penetrating agent and 79-84.3% of water. The scale removing and unfreezing process comprises the following steps: 1) adopting a pump truck for backwashing a production well with hot water at a wellhead of the production well, wherein the water temperature is 50-80 DEG C and the liquid quantity is 20m<3>; 2) injecting 8-10m<3> of scale removing agent into a wellhole from a casing gate and then adopting replacing and squeezing liquid for replacing the scale removing agent in the wellhole into a waste liquid tank truck; and 3) starting a pumping unit to recover the normal production of the oil well. The scale removing agent applicable to alkaline-surfactant-polymer flooding is low in corrosivity and safe to use.

The present invention discloses a complex oilfield water flooding bactericide. The complex oilfield water flooding bactericide is prepared from the following raw materials by weight: 25-35 parts of saccharide gemini quaternary ammonium salt, 2-5 parts of alkyl glucoside, 10-15 parts of quaternary phosphonium salt, 4-10 parts of isothiazolinone, and 5-10 parts of dithiocyano-methane. The bactericide has strong bactericidal effect, can effectively remove the sulfate-reducing bacteria, iron bacteria and saprophytes in water, and avoid corrosion and clogging of pipelines and equipment caused by bacteria, and has the advantages of simple ingredients, easy preparation, fastness, efficiency, low cost, high sterilization rate, low usage and little side effects.

The present invention relates to a vanadium pentoxide preparation method, and provides a method for preparing vanadium pentoxide through composite extraction. The method comprises: (1) leaching; (2) reducing; (3) extracting, wherein a vanadium-containing material liquid is extracted with a composite extractant prepared from a phosphate organic matter and a modifier to prepare a vanadium-containing supported organic phase; (4) carrying out back extraction, wherein the supported organic phase is subjected to back extraction with sulfuric acid or a vanadium-containing sulfuric acid solution to prepare a vanadium-rich liquid; (5) removing acid, wherein the excess acid in the vanadium-rich liquid is extracted; (6) precipitating vanadium; and (7) calcining. According to the present invention, the vanadium is extracted with the composite extractant having strong extraction ability and strong back extraction ability, such that the vanadium extraction rate and the vanadium purity can be improved so as to improve the yield and the product of the vanadium pentoxide product, and the alkali consumption can be reduced so as to reduce the production cost.

The invention discloses a waterproof type single-layer lining structure applicable to a fourth level surrounding rock double-line track. The waterproof type single-layer lining structure applicable tothe fourth level surrounding rock double-line track comprises fourth-level surrounding rocks subjected to smooth blasting treatment and further comprises omega-shaped spring drainage half pipes and anchored rods arranged in the fourth-level surrounding rocks in a struck manner. The anchored rods are perpendicular to the rock surfaces of the fourth-level surrounding rocks. The rock surfaces of thefourth-level surrounding rocks are further subjected to washing, injection of a first layer crude fiber concrete and curing, injection of mortar and curing, spraying of a waterproof material and curing, ejection of a second layer fine fiber concrete and curing in sequence. According to the waterproof type single-layer lining structure applicable to the fourth level surrounding rock double-track tunnel involved, force bearing of the single-layer lining structure formed by the technology is uniform; the structure has certain deformation resistant capacity; the construction technology is simple;the construction period is short; construction pollution is reduced; the structure is low-carbon and environment-friendly and widely applied to projects of fourth-level surrounding rock double-tracktunnel lining structures.

The invention discloses a stripping device for electro-deposited metal. The device comprises a rack, knife assemblies on the two sides, a middle inclined stripping knife assembly and a lifting device, wherein the rack comprises a base, a stand column, an L-shaped support, a beam and an upper rack body, the knife assemblies on the two side comprise two sets of knife assemblies distributed on the left side and the right side of a cathode plate, and each knife assembly comprises a pre-stripping knife, a first front driving arm, a first back driving arm, a first guiding device, a synchronization mechanism, an opening and closing oil cylinder and a downward-pressing oil cylinder; the middle inclined knife assembly comprises an inclined stripping knife, a second front driving arm, a second rear driving device, a first guiding device, a synchronization mechanism, an opening and closing oil cylinder and a downward-pressing oil cylinder; the lifting device comprises a lifting oil cylinder, a second guiding device, a cathode plate hook and a cathode conductive head adjusting block. The stripping device is small in size, high in zinc stripping capacity, high in pre-stripping success rate and high in applicability and efficiency and sub-sequent zinc stripping operation is facilitated.

The invention provides an adhesive having high glass-transition temperature. The adhesive has very high glass-transition temperature (Tg) 170 DEG C, and the heat-resistant performance is superior to those of epoxy system adhesive and acrylic ester system adhesive. A flexible copper-coated plate prepared by using the adhesive has the excellent heat-resistant performance, bonding performance, flameresistance performance and weather-proof performance and can be applied to the field of high-end circuit boards, such as automobiles, G-series high-speed trains, spaceflight and war industry.

The invention discloses an industrial water treatment bactericide which is prepared from the following raw materials in parts by weight: 18-25 parts of glycosyl-gemini quaternary ammonium salt, 2-5 parts of alkyl glycoside, 4-10 parts of isothiazolinone and 5-10 parts of sodium dichloroisocyanurate. The four-component compounded industrial water treatment bactericide provided by the invention has high efficiency and broad spectrum, the potential of each component is exerted to the maximum through synergy, and thus the requirements for diversified sterilization treatment of industrial water microbes are met. The bactericide provided by the invention also has the advantages of low toxicity and easy degradation.

The invention discloses a self-adhesion waterproof material which is prepared from the following raw materials in parts by weight: 25-50 parts of softening oil, 2-5 parts of hot melt adhesive grade elastomer, 2-6 parts of synthetic rubber, 30-55 parts of asphalt, 1-5 parts of p-phenylenediamine, 1-9 parts of styrene-butadiene-styrene block copolymer, 2-5 parts of tackifying rubber, 8-18 parts of waste rubber elastomer, 0.1-0.5 part of an anti-ultraviolet agent, 5-8 parts of high-temperature resin, 10-25 parts of tackifying resin, 0.1-0.15 part of an interface agent and 4-44 parts of pigments and fillers. The waterproof material is excellent in weather and ageing resistance, the defect that the waterproof effect of a conventional asphalt-based coiled material is invalid along with time and seasons is overcome, the waterproof material is very good in stripping performance which is 2-3 times that of the conventional asphalt-based coiled material, and the waterproof material is closely combined with concrete to form a skin type waterproof barrier.

The invention provides a modified non-asphalt-base self-adhesion waterproof coiled material with floating beads. The modified non-asphalt-base self-adhesion waterproof coiled material is characterizedby comprising, by weight, 15-48% of electron-rich system softening oil (which is a mixture, contains large pi bonds and accordingly is an electron-rich system), 0.5-6% of hot melt adhesive grade elastomers, 2-10% of styrene-butadiene-styrene block copolymers, 1-5% of tackifying rubber, 5-20% of waste rubber elastomers, 0.1-0.5% of anti-ultraviolet agents, 3-8% of high-temperature resin, 8-20% oftackifying resin, 0.1-0.2% of interfacial agents, 5-30% of floating beads and 5-15% of waste edible oil. The electron-rich system softening oil, the hot melt adhesive grade elastomers, the styrene-butadiene-styrene block copolymers, the tackifying rubber, the waste rubber elastomers, the anti-ultraviolet agents, the high-temperature resin, the tackifying resin, the interfacial agents, the floatingbeads and the waste edible oil are prepared to obtain the modified non-asphalt-base self-adhesion waterproof coiled material.

The invention discloses a moderate and stable sterilizing wet paper towel for mobile phones and application of the moderate and stable sterilizing wet paper towel. The moderate and stable sterilizing wet paper towel is prepared from O-cymene-5-ol, quaternary ammonium salt-73, hexamidine dihydroxyethyl sulfonate, 1,2-hexanediol, 1,2-pentanediol, hydroxyacetophenone, chlorhexidine acetate, a sapindus mukorossi extract, butanediol, hydrogenated castor oil and water, wherein the mass ratio of the O-cymene-5-ol to the quaternary ammonium salt-73 to the hexamidine dihydroxyethyl sulfonate to the chlorhexidine acetate is 1: 1: 1: 2. Through compounding all the ingredients, sterilizing capability of a system can be better improved, and the irritability is lowered.

The invention discloses an antibacterial styrene-acrylic emulsion, and a preparation method and the application thereof. The emulsion is prepared from the following components in parts by weight: 40 to 60 parts of deionized water, 15 to 20 parts of styrene, 15 to 20 parts of butyl acrylate, 3 to 5 parts of an emulsifier, 1 to 2 parts of a water-soluble initiator, 0.5 to 1 part of an oxidation-reduction system initiator, 2 to 7 parts of an antibacterial monomer, 0.1 to 0.3 part of a pH value regulator and 3 to 5 parts of other auxiliaries. By taking a main measure of adding a monomer having the antibacterial function for participation in polymerization reaction during synthesis of the styrene-acrylic emulsion, the styrene-acrylic emulsion has an antibacterial function, and no antibacterial auxiliary is needed; moreover, the styrene-acrylic emulsion is uniform in dispersion and difficult to seep. The antibacterial styrene-acrylic emulsion has the characteristics that the styrene-acrylic emulsion is high in efficiency and low in toxicity, is hardly affected by the change of the pH value, and is convenient to use, has a relatively strong stripping function for a mucous layer, is stable in chemical property, and has relatively good dispersion and corrosion inhibition effects.

A method for evaporation-free preparation of zinc sulfate from a brass slag material is characterized by comprising the steps: taking a light ash material of the brass slag material, adding water according to the solid-liquid mass ratio of 1:14-16, carrying out pulp conditioning, and carrying out neutral leaching with concentrated sulfuric acid; then extracting by a P204 extraction agent, and washing with a dilute sulfuric acid solution with the pH value of 2.0-2.5; next carrying out first-class cross-flow back extraction by a sulfuric acid solution with the concentration of 350-450 g / L, carrying out repeated back extraction, and then separating out zinc sulfate; carrying out second-class cross-flow back extraction of a zinc-containing P204 oily liquid left in the first-class back extraction with a sulfuric acid solution, and when the zinc concentration reaches about 95+ / -10 g / L, supplementing the second-class back extraction solution to the first-class back extraction solution; allowing the P204 oily liquid obtained after second-class back extraction to anew return to the step 2), and carrying out extraction; and finally carrying out cycle operation of feeding, leaching, extracting, washing, first-class cross-flow back extraction and second-class cross-flow back extraction, and separating out zinc sulfate heptahydrate crystals. The method has the advantages of simple process, low energy consumption and high production efficiency; and the prepared zinc sulfate is granular in shape, is bright white in color, and has the quality better than zinc sulfate produced by a concentration distillation method.

This invention provides a environment protective PS plate printing ink and photoresist remover, which features the composition of 0.5-2 % (by weight) of organic surface active agent, 0.5-2 % of inorganic surface active agent, 10-25 % of organic solvent, 3-15 % of acids, the others is water. Said invention also provides relative preparation and use method.

The invention provides a method for extracting phenolic substances from phenol-containing raw oil. The method comprises the following steps: 1, extracting: carrying out multistage countercurrent extraction on the phenol-containing raw oil with an aqueous solution of ammonia or an organic amine as an extractant to obtain an extract phase A and a raffinate phase B; 2, back-extracting: carrying out multistage countercurrent back-extraction on the extract phase A with nonylphenol or a high-boiling phenol, having a molecular weight greater than that of trimethylphenol, in coal tar as a back-extractant to obtain an aqueous phase C containing the extractant and a back-extraction phase D rich in phenolic substances; 3, regenerating the extractant: adding the back-extraction phase D rich in phenolic substances into an extractant recovery tower, carrying out rectification separation to obtain a water-containing extractant E at the tower top and a tower bottom liquid which is crude phenol oil F,mixing the water-containing extractant E with the aqueous phase C containing the extractant, and then returning the obtained mixture to step 1 for recycling; and 4, refining and regenerating the back-extractant: carrying out multi-time distillation separation on the coarse phenol oil F to obtain a back-extractant G and the phenolic substances, and returning the back-extractant G to step 2 for recycling.

The invention relates to a photoresist stripping liquid. The photoresist stripping liquid is characterized by comprising an organic amine compound, an organic solvent and an additive, wherein the additive is selected from at least one of 8-hydroxyquinoline, [(2-hydroxyethyl)imino]di-2,1-ethanediyl dioleate, triethanolamine aspartate or alkanolamide; in the photoresist stripping liquid, the contentof the organic amine compound accounts for 15-30wt%, the content of the organic solvent accounts for 70-85wt%, and content of the additive accounts for 0.1-0.5wt%; and in the photoresist stripping liquid, the total content of all constituents accounts for 100%. By the photoresist stripping liquid, rapid stripping of photoresist in ITO / Ag / ITO and Mo / Al / Mo structural layers can be achieved, good low-temperature performance is achieved, and the problems of corrosion to a metal matching line, environmental pollution, poor safety of an operator, toxicity, poor stripping effect and the like are effectively solved.

The invention discloses a compound oilfield water injection bactericide, which is made of the following raw materials in parts by weight: 25-35 parts of sugar-based gemini quaternary ammonium salt, 2-5 parts of alkyl glycoside 10-15 parts of quaternary phosphonium salt, 4-10 parts of isothiazolinone, 5-10 parts of dithiocyanomethane. The invention has a strong bactericidal effect, can effectively remove sulfate-reducing bacteria, iron bacteria, and saprophytic bacteria in water injection, and avoid corrosion and blockage of pipeline equipment by bacteria, and has the advantages of simple components, convenient preparation, fast efficiency, and low cost , high sterilization rate, low usage, small side effects and other advantages.

The invention relates to a traffic marker ultrasonic pulsed jet cleaning vehicle, which comprises a carrying cart and a cleaning trolley. A water tank, a high pressure water generation device, an ultrasonic generator and an electric control device are arranged on the carrying cart. An ultrasonic pulsed jet rotating nozzle device is arranged on the cleaning trolley. A high pressure water inlet of the ultrasonic pulsed jet rotating nozzle device is communicated with the high pressure water generation device through a high pressure water pipeline. The ultrasonic pulsed jet rotating nozzle deviceis electrically connected with the ultrasonic generator by an ultrasonic transmission cable. The traffic marker ultrasonic pulsed jet cleaning vehicle is characterized in that: a rotating mechanism and a pneumatic motor used for driving the rotating mechanism are arranged on the cleaning trolley; the pneumatic motor is communicated with a compressed air pump arranged on the carrying car by a speed control valve; and the ultrasonic pulsed jet rotating nozzle device is arranged on the rotating mechanism, and is driven to rotate by the rotating mechanism. The marker ultrasonic pulsed jet cleaning vehicle enhances the cutting, cleaning, stripping and crushing effects of pulsed jet on the surfaces of objects, and has the cleaning capability improved by 3 to 5 times.

The invention relates to non-discharge plug-removing stick-releasing integrated working fluid and process for a ternary compound combination flooding oil well. The problems that in an existing process, the utilization rate of medicaments is low, the overall cost is high, the construction time is long, and reaction residual liquid needs to be discharged are mainly solved. The non-discharge plug-removing stick-releasing integrated working fluid is characterized by being prepared from a scale clearing agent and a protective agent, and the scale clearing agent is prepared from the components in percentage by weight: 5%-7% of hydrochloric acid, 3%-5% of solid nitric acid, 0.3%-0.5% of alkylphenol ethoxylates, 1.0%-2.0% of triethanolamine, 0.5%-1.0% of imidazoline-ammonium-salt corrosion inhibitor and 90.2%-84.5% of water; the protective agent is prepared from the components in percentage by weight: 3.0%-5.0% of sodium hydroxide, 0.5%-1.0% of ethylenediaminetetraacetic acid disodium salt, 0.5%-1.0% of nonionic demulsifier SP169 and 96.0%-93.0% of water. The invention further provides a non-discharge plug-removing stick-releasing integrated process for the ternary compound combination flooding oil well. The non-discharge plug-removing stick-releasing integrated working fluid and process have the advantages of high efficiency of scale clearing and plug removing, low cost, safety and environmental protection.

The invention relates to a solid active bromine bactericidal algicide. The bactericidal algicide comprises, by weight, 30-40% of 2-bromine-4,5-dimethoxy phenyl propionitrile, 5-15% of 3-bromine-1-chlorine-5,5-dimethyl hydantoin, 5-15% of dibromo nitrilopropionamide, 15-25% of diquaternary ammonium activating agents, 10-20% of dibromo-2-cyanoacetamide and 5-15% of bronopol. The solid active bromine bactericidal algicide is advantageous in that, first, the bactericidal performances are strong and the bactericidal speed is fast; second, the application range of the pH value is wide; third, the bactericidal algicide is a bactericidal algicide with oxidizability and is effective to all kinds of microorganisms; fourth, the usage concentration is economical, and the bactericidal algicide with low dosage has strong bactericidal activity; fifth, the bactericidal algicide is suitable for ammonia-containing and nitrogen-containing water systems, and the bactericidal efficiency is not lowered with existence of ammonia; sixth, the bactericidal algicide has good intermiscibility and does not affect the using effects of corrosion and scale inhibitors; seventh, the bactericidal algicide has strong exfoliation; eighth, the bactericidal algicide has small impacts on the environment.

The invention discloses a production method of an environment-friendly composite sludge conditioner, comprising the following steps: (1) Preparation of reagent A: at 40-60°C, polydimethyldiallylammonium chloride, polydiallyl chloride Ethyl ether tetramethylethylenediamine and epichlorohydrin-dimethylamine copolymer are dissolved in pure water, stirred for 1-2h, and cooled to become A reagent; (2) Preparation of B reagent: a certain amount of alginic acid Sodium and chitosan are respectively added to a certain amount of acetic acid solution, configured into sodium alginate solution and chitosan solution, and then sodium alginate and chitosan are compounded to obtain a composite agent of polymer and fly ash, which is B Reagent, the environmental protection composite sludge conditioner of the present invention changes the sludge characteristics through the synergistic conditioning effect of the two compounds, and greatly enhances the sludge dehydration; and each component in the conditioner is relatively environmentally friendly, non-toxic and harmless, and the preparation process is easy.

The wound dressing with both antibacterial and bacterial warning functions of the present invention is composed of a wound contact layer, an intermediate moisture-absorbing layer and an external protective layer. The wound contact layer is a fibrous film with blood coagulation function, and the intermediate moisture-absorbing layer contains Polyvinyl alcohol porous foam with antibacterial agent, the outer protective layer is polyvinyl alcohol dense foam containing methylene blue and antibacterial agent, the middle moisture absorption layer and the outer protective layer are an integrated structure, and the wound contact layer and the middle moisture absorption layer are combined together , the antibacterial agent is a quaternary ammonium salt or a quaternary phosphonium salt. When the dressing of the present invention is free of bacteria, the middle hygroscopic layer and the outer protective layer are blue, and gradually change from blue to white if bacteria grow. The steps of the preparation method of the dressing are as follows: (1) preparing a polyvinyl alcohol foam with a dense top surface and a porous structure in the lower part, (2) soaking and drying, (3) preparing a fibrous film with blood coagulation function, (4) cutting, Assembly, packaging and sterilization.

The invention discloses a waterproof single-layer lining structure suitable for a four-level surrounding rock double-track track. The bolt on the Ⅳ-level surrounding rock, the bolt is perpendicular to the rock surface of the Ⅳ-level surrounding rock; wherein, the rock surface of the Ⅳ-level surrounding rock is also washed, sprayed with the first layer of coarse fiber concrete and Curing, spray mortar and curing, spray waterproofing and curing, spray the second layer of fine fiber concrete and curing. The invention relates to a waterproof single-layer lining structure suitable for grade IV surrounding rock double-track tunnels. The single-layer lining structure formed by this technology is uniformly stressed, has a certain ability to resist deformation, and has simple construction technology and construction period. Short, reduce construction pollution, low-carbon and environmental protection, widely used in the lining structure of grade IV surrounding rock double-track tunnel engineering.

The invention discloses an environment-friendly cooling system sterilizing algicide. The environment-friendly cooling system sterilizing algicide comprises the following components in parts by mass: 10-20 parts of hydrogen peroxide; 5 to 10 parts of sodium diethylhexyl sulfosuccinate; 0.5 to 3 parts of polyaluminum ferric chloride; 11 to 18 parts of polyhexamethylene guanidine; 4-9 parts of attapulgite; and 20 to 40 parts of deionized water. A preparation method of the environment-friendly cooling system sterilizing algicide comprises the following steps: S1, adding deionized water into a reaction container, uniformly mixing hydrogen peroxide, sodium diethylhexyl sulfosuccinate and polyhexamethylene guanidine, adding an obtained mixture into the reaction container, and uniformly mixing andstirring to form a pre-mixture; and S2, sequentially adding the rest components into the pre-mixture while stirring, and uniformly mixing and stirring to obtain the environment-friendly cooling system sterilizing algicide. The environment-friendly cooling system sterilizing algicide is suitable for an industrial circulating cooling water system and an air conditioner cooling water system. The method has the effect of improving the stripping capacity of the environment-friendly cooling system sterilizing algicide.

The invention provides an OLED display device. The OLED display device provided by the invention comprises: an OLED panel used for displaying an image; a backboard assembly used for supporting the OLED panel; and a bonding layer arranged between the OLED panel and the backboard assembly and used for bonding the OLED panel on the backboard assembly. The bonding layer comprises: a first adhesive tape with a bonding property; and a second adhesive tape different from the first adhesive tape, wherein the stripping performance of the second adhesive tape is higher than that of the first adhesive tape. The OLED display device provided by the invention can be reworked, and the maintenance cost is relatively low.

The invention relates to non-discharge plug-removing stick-releasing integrated working fluid and process for a ternary compound combination flooding oil well. The problems that in an existing process, the utilization rate of medicaments is low, the overall cost is high, the construction time is long, and reaction residual liquid needs to be discharged are mainly solved. The non-discharge plug-removing stick-releasing integrated working fluid is characterized by being prepared from a scale clearing agent and a protective agent, and the scale clearing agent is prepared from the components in percentage by weight: 5%-7% of hydrochloric acid, 3%-5% of solid nitric acid, 0.3%-0.5% of alkylphenol ethoxylates, 1.0%-2.0% of triethanolamine, 0.5%-1.0% of imidazoline-ammonium-salt corrosion inhibitor and 90.2%-84.5% of water; the protective agent is prepared from the components in percentage by weight: 3.0%-5.0% of sodium hydroxide, 0.5%-1.0% of ethylenediaminetetraacetic acid disodium salt, 0.5%-1.0% of nonionic demulsifier SP169 and 96.0%-93.0% of water. The invention further provides a non-discharge plug-removing stick-releasing integrated process for the ternary compound combination flooding oil well. The non-discharge plug-removing stick-releasing integrated working fluid and process have the advantages of high efficiency of scale clearing and plug removing, low cost, safety and environmental protection.

This invention provides a environment protective PS plate printing ink and photoresist remover, which features the composition of 0.5-2 % (by weight) of organic surface active agent, 0.5-2 % of inorganic surface active agent, 10-25 % of organic solvent, 3-15 % of acids, the others is water. Said invention also provides relative preparation and use method.

The invention relates to a sand blasting device, which includes an input pipe, a sand feed pipe, a mixing box, and a main sand discharge pipe. The input pipe and the sand feed pipe form an acute angle, and are respectively communicated with one end of the mixing box. The main sand discharge pipe is equipped with a main sand outlet, and is communicated with the other end of the mixing box. The sand blasting device also includes an auxiliary sand discharge pipe consisting of a first auxiliary sand pipe and a second auxiliary sand pipe crookedly connected to the first auxiliary sand pipe. Besides, the first auxiliary sand pipe is communicated with the mixing box, the second auxiliary sand pipe is provided with an auxiliary sand outlet, and the axial extension line of the second auxiliary sand pipe and the axial extension line of the main sand discharge pipe intersect to form an acute angle. The sand blasting device provided in the invention can make a component force in the surface tangential direction have a strong stripping effect on a film on the component surface, so that high efficiency and rapid sand blasting effects can be realized.

The invention provides a range hood and a cleaning method thereof. The range hood comprises a box and an exhaust fume collecting hood, wherein a fan system and a micro-nano bubble water cleaning device are arranged in the box, and the micro-nano bubble water cleaning device comprises a water inlet pipe, a gas inlet pipe, a gas dissolving pump, a gas mixing tank and a water outlet pipe. The gas dissolving pump is mounted on the gas inlet pipe and between the water outlet end of the water inlet pipe and the gas mixing tank, the water outlet end of the water inlet pipe communicates with the gas mixing tank, the gas outlet end of the gas inlet pipe communicates with the gas mixing tank, one end of the water outlet pipe is connected with the gas mixing tank, and the other end of the water outlet pipe faces the fan system. The cleaning effect of the range hood can be remarkably improved, and user experience is improved.

The invention discloses an electrodeposited metal pre-stripping device, which includes a frame, small knife assemblies on both sides, a middle oblique stripping knife assembly and a lifting device; the frame includes a base, a column, an L-shaped bracket, a beam and an upper frame; two The side knife assembly includes two sets of knife assemblies distributed on the left and right sides of the cathode plate, and each set of knife assemblies includes a pre-stripping knife, a first front drive arm, a first rear drive arm, a first guide device, a synchronization mechanism, an opening and closing Oil cylinder and depressing cylinder; the middle oblique stripping knife assembly includes oblique stripping knife, second front driving arm, second rear driving arm, the first guiding device, synchronous mechanism, opening and closing cylinder and depressing cylinder; lifting device includes lifting Oil cylinder, second guiding device, cathode plate hook and cathode plate conductive head adjustment block. Small size, strong stripping ability, high success rate of pre-stripping and convenient subsequent stripping operations, strong applicability and high efficiency.