55results about How to "Precipitate thoroughly" patented technology

The invention provides a purification method of wastewater containing heavy metal and arsenic. The purification method mainly comprises the process steps as follows: adding sulfuric acid or soluble sulfate into the wastewater to supplement sulfate ions; then adding a reductant to reduce high-valence manganese, chromium and vanadium in the wastewater; adding calcium carbonate to pre-adjust the pH value of the solution; adding lime for neutralization, precipitating and separating out heavy metals and harmful elements such as arsenic from the wastewater, and packaging the precipitates in gypsum slag, discharging or reusing filtered liquid after satisfying standards, and recycling filter residue. The purification method provided by the invention has the advantages of being simple in process, good in purification effect, low in cost and environment-friendly.

The invention belongs to the field of waste water treatment, and discloses a treatment method for synchronously removing the COD (Chemical Oxygen Demand) and rigidity of waste water. The treatment method particularly comprises the following steps of: adding ferrous salt and hydrogen peroxide to the waste water, and adding acid for controlling pH to 3-4 and having reaction; adding calcium hydroxide so that the pH is more than 10, then adding sodium carbonate, and stirring to obtain water with COD and the rigidity removed. The treatment method disclosed by the invention can be used for removing COD out of the waste water through a Fenton method and removing the rigidity by adopting a precipitation method, improves the removal ratio of the COD to 86% which is higher than the removal efficiency of the conventional Fenton oxidation by utilizing the absorption synergistic action of the precipitation method on COD removal and increases the removal ratio of the rigidity to 96%.

The invention discloses an ultrasonic-assisted laser welding device and method. Two amplitude-change poles are separately connected with a laser head in a mechanical coupling mode, and the axes of thetwo amplitude-change poles are in the same plane and the two amplitude-change poles are perpendicular to each other; and based on the vibration composition principle, by controlling the phase difference of amplitude and vibration between two sets of ultrasonic vibration, a laser beam vibrates in a circular, oval or linear track, on one hand, the thermal compound effect of laser is strengthened, on the other hand, partial ultrasonic energy is introduced into a molten pool through the laser beam and the heat transfer and flow behavior of the molten pool are affected. The energy density of the laser beam is enhanced by the combined energy field of ultrasound and laser, and at the same time, the effect of high frequency vibration energy is affected to the molten pool, a weld joint is tight intexture, gas is precipitated thoroughly, grain is refined and alloying elements are distributed more evenly, and the quality of the weld joint is greatly improved. The invention relates to the ultrasonic-assisted laser welding device and method, and belongs to the technical field of high efficiency laser machining.

The invention discloses a technology for producing industrial-grade ammonium chloride by a quadruple-effect evaporation heat method. The technology is characterized by comprising the steps of evaporation, salt and ammonium crystallization, slurry washing, dehydration and drying. A new technology for realizing quadruple-effect evaporation, backflow feed, first-effect salt precipitation and steam injection ammonium precipitation is provided for producing ammonium chloride with an industrial heat method. The evaporation efficiency is improved, the steam is used for multiple times, and the energy saving effect is obvious; the evaporation is smoother through backflow feed; the concentration of ammonium chloride in the first-effect liquid is the highest, and the precipitation of the sodium chloride is relatively thorough, thereby being favorable for salt-ammonium separation; and the cooling crystallization effect of steam injection ammonium precipitation is good, and a flash thickening and granulation effect is realized. Compared with a triple-effect evaporation, direct-flow feed and two-effect salt precipitation technology, the energy consumption is little, the cost is low, the steam consumption is reduced to 0.95-1.10 tons of steam per ton of product, the salt and ammonium separation effect is good, the quality of the ammonium chloride product is superior to the international quality, and the ammonia content reaches 25.2-26.0%.

The invention discloses a method for producing high-purity antimonous oxide by treating antimony sulfide concentrate to improve product whiteness, which comprises the following steps of: performing leaching and primary reduction, rising the temperature of solution, introducing chlorine for oxidation, performing precipitation for at least 2 hours, performing secondary reduction, adding copper sulfate into the secondary reduction solution for reaction, filtering the reaction solution, adding water for hydrolysis, adding a transformation agent for transformation, and drying the transformed solution to obtain the product with the whiteness of 93 to 95.

The invention belongs to the technical field of light-emitting diode (LED) light source and in particular relates to fluorescent powder for white LEDs and backlight LEDs. The chemical structural formula of the fluorescent powder is RE1xCexM2AlO5, wherein M is one or more of alkaline-earth metals; RE is one or more of La, Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm and Lu in rare-earth elements; and x is more than or equal to 0.001 and less than 1. During preparation, nitrates of various elements serve as original reactants; NH4X, BaX2, SrX2, boric acid or borate serves as a cosolvent; a liquid phase method is adopted; the materials are burned at high temperature in air and then are reduced in reducing atmosphere; the prepared fluorescent powder has higher brightness and stability and a more complete crystal form. During preparation, oxalate and ammonia water serve as precipitating agents, so that the elements RE, Ce, Al and M in the structural formula are precipitated completely, and the phase purity of the fluorescent powder can be improved. The fluorescent powder can be used for preparing the white LEDs and the backlight LEDs.

The invention discloses a method for preparing a zinc sulfate solution de-fluorination agent, which comprises the following steps: 99% glacial acetic acid reacts with lime slurry to produce a calcium acetate solution, the calcium acetate solution is evaporated and concentrated to obtain calcium acetate monohydrate, and the calcium acetate monohydrate is dried to obtain anhydrous calcium acetate; industrial sulphuric acid reacts with lime slurry to produce calcium sulfate dehydrate, and the calcium sulfate dehydrate is dried to obtain calcium sulfate; 60-80% of anhydrous calcium acetate, 15-30% of calcium sulfate and 5-10% of industrial polyalumi rlillm sulfate are mixed by mass percent, then crushed and packaged, so that the zinc sulfate solution de-fluorination agent is obtained. The de-fluorination agent prepared through the method is simple in production process, calcium of the de-fluorination agent exists in the soluble matter form, the de-fluorination efficiency is high, the high capability is realized, and the cost is low.

The invention discloses a sewage treatment device for municipal engineering, and belongs to the technical field of municipal wastewater engineering. The sewage treatment device comprises a shell, a charging tube, a gear, a filtering plate, a rack, a first single-direction valve, a sewage filtering room, a cover plate, a handle, a suction-pipe, a medicament charging hole, a stirring motor, a stirring shaft, a stirring device, a medicament charging-precipitating room, a second single-direction valve, an ultraviolet sterilizing lamp, an active carbon adsorption device, a suction fan, a water discharging tube and a natural precipitating room, wherein the sewage filtering room, the medicament charging-precipitating room and the natural precipitating room are arranged inside the shell from left to right; the stirring motor is arranged in the center of a top end of the medicament charging-precipitating room; an output shaft of the stirring motor is connected with the stirring shaft. The sewage treatment device is reasonable in structure, the sewage filtering room, the medicine precipitating room and the natural precipitating room are provided, the sewage can precipitate fully, the sewage treatment effect is more remarkable, discharge of odor in the sewage can be lowered effectively, and the quality of air surrounding the sewage treatment device is ensured.

The invention discloses an ultrasonic non-melt metal argon arc welding technology and device. According to the technology, during non-melt metal argon arc welding, ultrasonic vibration is conducted on a molten bath and base metal near a weld joint in real time to enable molten metal tissue to be dense and uniform, refinement of metal grains at the position of the weld joint is achieved, evolution of gas in the molten bath is accelerated, and welding quality is improved. The device comprises an energy converter and an amplitude-change pole, wherein the energy converter is fixedly connected to one end of the amplitude-change pole, an electrode cavity is formed in the other end of the amplitude-change pole, an electrode is arranged in the electrode cavity, an air inlet and a wire inlet are formed in one side face of the amplitude-change pole, the air inlet is communicated with the electrode cavity, a wire is connected to the electrode and is led out through the wire inlet, and a welding wire groove and an exhaust groove are formed in the lower end face of the amplitude-change pole. By the adoption of the ultrasonic non-melt melt argon arc welding technology and device, grains at the position of the weld joint are better refined, metal tissue is denser, evolution of gas in the weld joint is more complete, welding deformation is reduced, the fatigue strength of a welded joint is improved, the fatigue life of the welded joint is prolonged, and the welding quality is guaranteed.

The invention discloses a preparing and feeding method for chlamys farreri larva baits, and belongs to the field of aquaculture. In a chlamys farreri seedling growing process, the problems of tender physique of seedlings and low survival rate which are caused by inadequate baits exist. The technical key points of the preparing and feeding method are that four ocean microalgaes are aquacultured by magnetized water and blue light so as to prepare algae paste which is fed to chlamys farreri larva seedlings; the nutrition is comprehensive, the chlamys farreri larva grows fast and is strong in physique and high in survival rate; the microalgaes are cultured by the magnetized water, so that microalgae bodies grow fast and are pure in color; the microalgaes are cultured by a water storage tank, so that the cleaning is convenient, the cost is low, damage caused by collision seldom occurs, repeated use is realized, and pollution is basically avoided; with the adoption of blue light cultivation, the EPA and DHA contents in the microalgaes are high; the algae liquid is prepared into the algae paste for feeding, so that the feeding amount is easy to control, and a water body cannot be polluted; the baits can be produced all the year round, the occupied space is small, and the transportation and the storage are facilitated.

The invention discloses a farmland recession treatment system and method based on ecological interception and circulating purification. The system comprises a caisson, an ecological ditch, a multi-stage ecological regulation and storage pond, an automatic water quality detection system and an intelligent water-saving irrigation system, the promoting caisson is arranged at a water outlet of the farmland, and farmland recession water discharged from the water outlet can completely enter the promoting caisson for preliminary sedimentation; the multi-stage ecological regulation and storage pond comprises a divergent section and a main reaction section which are communicated with each other; the main reaction section comprises an aeration tank, a sedimentation tank with ecological protection slopes on peripheral slopes, a first filter material dam, a second filter material dam and a purification tank; a plurality of bionic aquatic plants hung in the direction perpendicular to the water flow direction are uniformly fixed in the purification tank; and an automatic water quality detection system for detecting the standard reaching condition of water quality is arranged at the water outlet end of the purification tank. The method is suitable for intercepting farmland non-point source pollutants in planting areas of aquatic plants such as rice fields and zizania aquatica, and the river entering amount of the farmland non-point source pollutants can be effectively reduced.

The invention provides an efficient cultivating and harvesting method for nitzschia closterium, and belongs to the field of aquaculture. The nitzschia closterium is mainly extensively cultivated by virtue of an open cement pool in the past, so that the nitzschia closterium is high in cost, easy to pollute, complicated in process, troublesome to operate, large in investment of capital construction and low in yield. According to the efficient cultivating and harvesting method, aerated feeding cultivation is carried out in a microalgae cultivation chamber by virtue of white plastic buckets; and two plastic buckets are connected in series, so that the aerated gas is utilized for the second time, and thus energy and resources are saved. A traditional culture solution formula is also optimized, so that the nitzschia closterium is relatively comprehensive and balanced in nutrient, not easy to pollute, low in cost, and easy to operate; and the yield of the nitzschia closterium is improved by 150%. In addition, a centrifugal process is adopted to harvest the nitzschia closterium in the past, so that the process is high in power consumption, not thorough to participate and high in expense. Due to a compound precipitant, the efficient cultivating and harvesting method is high in sedimentation rate, and thorough to participate; and funds are saved.

The invention discloses an environment-friendly landscape sewage treatment system which comprises a sewage collection tank, a settling basin, a microbial reaction tank and a biogas collection tank, wherein the bottom of the sewage collection tank is communicated with side walls of the settling basin; the bottom of the settling basin is communicated with the side of the microbial reaction tank; a water outlet pipe is arranged on one side, which deviates from the sewage collection tank, of the settling basin; and the top of the microbial reaction tank is communicated with the biogas collection tank. According to the sewage collection tank, the sewage can be collected and then conveniently and rapidly centralized. Then, the sewage can enter the settling basin via the sewage collection tank, soil and big-mass impurities in the sewage can settle in the settling basin, and the upper clarified water can be repeatedly utilized by a water outlet pipe or directly discharged into rivers and lakes. However, sediments in the settling basin are discharged into the microbial reaction tank and are subjected to microbial treatment so as to produce lots of biogas, and the biogas can be collected into the biogas tank to be used in daily life.

The invention belongs to the technical field of coal sample detection and particularly relates to a method of measuring bromine in coal with high temperature hydrolysis and a bromine ion selective electrode. The method includes the steps of firstly drawing a standard curve of logarithm of Br<-> concentration to response potential, performing high temperature hydrolysis to the coal sample, with a NaOH solution as an absorption solution for bromine, measuring the electric potential of the pyrolysis liquid after bromine absorption, and calculating the content of bromine in coal. The method is economical and simple and is free of expensive instruments, and can be widely used for daily analysis of the bromine content in coal and other geological samples.

The invention discloses a multistage lead paste precipitation and separation process for a waste storage battery. The multistage lead paste precipitation and separation process comprises the process flows of waste lead-acid storage battery crushing, lead paste separation lead paste precipitation, second-stage precipitation and the like. Through the arrangement of a two-stage sedimentation tank, alead paste solution with low lead paste content in a first-stage sedimentation cylinder is introduced into the second-stage sedimentation tank; the lead paste solution in the second-stage sedimentation tank is aerated through an an aeration pipe group, so that the contact surface of a flocculating agent and the lead paste solution is further improved, and the flocculating agent and the lead pastesolution are mixed and reacted for a long time to obtain secondarily separated lead paste, that is to say, piston rods are driven through air cylinders to drive a support plate to move upwards, and the support plate moves a bottom plate out of the second-stage sedimentation tank, so as to take out the lead paste in the second-stage sedimentation tank. The lead paste in the waste lead-acid storagebattery is precipitated and separated out more thoroughly through twice precipitation, and the purification effect of the waste lead-acid storage battery is better.

The invention discloses a system and method for repairing organic contaminated soil through sludge microwave gasification residues in a targeting mode, and belongs to the technical field of contaminated soil repairing. The system comprises a first stirring and mixing device, a gasification reactor, a second stirring and mixing device, a desorption reactor and a screening device. Dewatered sludge is pyrolyzed and carbonized in the gasification reactor to form sludge carbon, through the characteristic of multi-pore adsorption and absorption of microwave assisted heating, the desorption of pollutants in the soil can be effectively promoted in the process of mixing the sludge with the organic contaminated soil, and organic matter in the soil is adsorbed; and in the subsequent microwave heating process of the desorption reactor, the organic matter adsorbed on the sludge carbon is volatilized in a gas form, and the residual sludge carbon returns to the first stirring and mixing device and the second stirring and mixing device to participate in sludge carbonization and organic matter adsorption. Sludge treatment and organic contaminated soil treatment are combined to achieve the purpose of treating waste with waste, the sludge carbon can be recycled after adsorption and desorption, and the cost is lowered.

The invention discloses a preparation method of environment-friendly bait for pinna and belongs to the field of aquaculture. The method is characterized in that high quality benthic diatom is cultured by an optimized culture medium, magnetized water, green light, palm bark, a glass goldfish bowl and the like, and then the mixed bait for the pinna is prepared by taking the benthic diatom as a major component and adding a small amount of sheep manure, rabbit manure, porcine blood powder, yeast powder, corn distiller, potamogeton malaianus powder, water caltrop powder, hydrilla varticillata powder, bone tankage, earthworm powder, fly maggot powder, artemia powder, kelp powder, garlic powder, methionine, lysine, potato powder, locust powder, lucerne meal, clam worm powder, trash fish and spiral shell meat meal. The bait is scientific and reasonable in formulation, nutrient-rich and lower in cost, is used for feeding the pinna and does not pollute water, the pinna grows quickly, has a strong constitution and is high in survival rate, and the yield is increased by 160%.

The invention provides a plasma arc ultrasonic welding process and device. The process is characterized in that in the plasma arc welding process, base metal beside a molten pool and a weld joint are ultrasonically vibrated in real time, molten metal tissue is dense and uniform, metal grains in the weld joint are refined, and welding stress and welding deformation are reduced. The device comprises an energy converter and an amplitude-change pole. The energy converter is fixedly connected to one end of the amplitude-change pole, the other end of the amplitude-change pole is provided with a cavity, a welding nozzle is arranged in the cavity, a protection gas cavity is formed in the gap between the welding nozzle and the cavity, an electrode is arranged in the welding nozzle, a cooling water cavity is formed in the welding nozzle, an ion gas inflow pipe is arranged on the welding nozzle, and a protection gas inflow pipe is arranged on the amplitude-change pole. The base metal beside the molten pool and the weld joint is vibrated, the grains in the weld joint are more refined, the metal tissue is denser, gas in the weld joint is completely precipitated, welding deformation is reduced, the fatigue strength of a welding joint is improved, the fatigue life of the welding joint is prolonged, and welding quality is guaranteed.

The invention discloses a solid-liquid spiral separation press machine in the technical field of press machines. The solid-liquid spiral separation press machine comprises a shell, wherein a baffle plate is arranged in an inner cavity of the shell; the baffle plate is used for dividing the inner cavity of the shell into a solid-liquid separation tank and a stirring tank from top to bottom in sequence; a separation motor is arranged on the outer wall of the left side of the solid-liquid separation tank; a conveying and extruding shaft is arranged in an inner cavity of the solid-liquid separation tank; the bottom part of the right side of the solid-liquid separation tank is provided with a solid outlet; a stirring motor is arranged at the top part of a supporting block; a stirring shaft is arranged in an inner cavity of the stirring tank; the bottom part of the right side of a filter tank is provided with a water flow outlet. The solid-liquid spiral separation press machine disclosed bythe invention is simple in structure, solid-liquid separation is carried out on sewage and slurry through the solid-liquid separation tank, and liquid can be filtered into the stirring tank for carrying out stirring and precipitating and can be finally discharged after being deeply filtered in the filter tank, so that pollution emission is reduced; a scraper and a hairbrush are arranged at the outer side of a spiral pushing piece, meanwhile, filter holes in the baffle plate are also prevented from being blocked, and the working efficiency is improved.

The invention discloses a sewage precipitation pool of a swinging rod dispersion precipitating agent. The sewage precipitation pool comprises a rectangular sewage precipitation pool, a swinging rod dispersion device and a dirt cleaning device, wherein a water inlet groove is formed in the upper part of the left end surface of the sewage precipitation pool; a water inlet is formed in the left sidewall of the sewage precipitation pool; a water overflow groove is formed in the upper part of the right end surface of the sewage precipitation pool; a water overflow opening is formed in the right side wall of the sewage precipitation pool; a plurality of downwards recessed isosceles trapezoid-shaped sludge hoppers with the wider upper side and the narrower lower side are uniformly formed in theleft and right direction of the upper end surface of the lower side wall of the sewage precipitation pool; a sludge falling groove is formed in the lower part of the lower side wall of the sewage precipitation pool; the sludge hoppers and the sludge falling groove are communicated through the material falling groove; swinging rods are arranged at the upper end of the sewage precipitation pool in ascattered way; the dirt cleaning device comprises a scarping plate and a sealing plate; the scraping plate is arranged in the sludge hopper in a front and back sliding way; the sealing plate can be used for opening and closing the material falling groove. The sewage precipitation pool has the advantages that the precipitating agents can be uniformly dispersed; the precipitation effect is good; through the combination of the scraping plate and water washing, the dirt cleaning effect is good.

The invention relates to a grain and oil purification and extraction device. The device comprises s base, a fixed ring is arranged on the upper portion of the base, the fixed ring is fixedly connectedwith the base through a support, a movable ring is arranged in the fixed ring, the middles of the front side and the rear side of the movable ring are connected with the inner ends of cross shafts through bearings respectively, the outer ends of the cross shafts are fixedly connected with the fixed ring separately, a damping bearing is fixedly installed on the periphery of the cross shaft on thefront side, an annular gear is fixedly installed on the periphery of the damping bearing, a short shaft is arranged over the cross shafts, a shaft base is installed at the front end of the periphery of the short shaft through a bearing, the shaft base is fixedly connected with the movable ring through a support rod, a gear is fixedly installed at the rear end of the short shaft, and the gear is inmeshing cooperation with the annular gear. Accordingly, the structure is simple, a swinging oil pot can rotate continuously, shaking of the oil pot in all directions is achieved, the sesame oil shaking efficiency is improved, the sesame oil in paste is separated out more thoroughly, and meanwhile the oil pot shaking amplitude can be controlled; requirements of sesame oil shaking in different stages are met, the market requirements can be met, and the device is suitable for popularization.

The invention discloses a method for preparing corn oil from corn kernels. The method comprises cleaning corn kernels as a raw material, screening and grading the raw material, roasting in vacuum, pressing, carrying out primary filtering, carrying out thermal treatment in vacuum, removing wax, carrying out fine filtration, and packaging to obtain corn oil. The process of roasting in vacuum is utilized herein, so that corn kernels with high quality can be attained; the corn kernels are subjected directly as a raw material to production of corn oil; the germ extraction process is omitted, so that investment and production cost are reduced; the corn oil is further dewatered and subjected to enzyme inactivation through the thermal treatment in vacuum, so that quality of the finished corn oil is improved.

The invention discloses a biological extraction device and method based on a respiratory loosening mechanism for edible and medical materials. The device comprises a liquid storage tank, wherein a four-way pipe fitting is arranged at the bottom of the liquid storage tank, and is connected with a steam generator, a liquid taking switch and an edible and medical material tank respectively; the liquid storage tank and the edible and medical material tank are connected through two pipelines; a normally closed solenoid valve is arranged on a first connecting pipeline; a one-way valve, a water-air pump and a three-way solenoid valve are arranged on a second connecting pipeline; the interface A of the three-way solenoid valve is connected with the inlet of the water-air pump; the interface B of the three-way solenoid valve is communicated with the top of the edible and medical material tank, and the pipeline is connected with a pipeline between the normally closed solenoid valve in the first connecting pipeline and the edible and medical material tank; the interface C of the three-way solenoid valve is connected with the bottom of the edible and medical material tank; when the three-way solenoid valve is in a normal state, the interface A and the interface C are connected; when the three-way solenoid valve is switched on, the interface A and the interface B are connected. The extraction method performed by the device has the characteristics of good biological effect, high extraction efficiency and pure mouthfeel of juice; the biological extraction device is easy to operate, and has good user experience.

The invention relates to the technical field of impurity removal auxiliary devices for river sewage and in particular relates to an impurity removal device for river sewage. The impurity removal device comprises a working box and four groups of brackets, wherein the working box is internally provided with a working cavity; the right side of the top end of the working box is communicated with a feeding pipe; the lower side of the left side of the working box is communicated with a discharging pipe; a discharging valve is arranged on the discharging pipe; a filtering screen is arranged in the working box; the impurity removal device further comprises a push plate, a push rod, a push block and a scraping plate; a first sealing ring sleeves the outer side of the push rod; the lower side of theright side of the working box is communicated with a gas feeding pipe; the device further comprises a supporting platform, an adsorption box and a communication pipe; an adsorption cavity is arrangedin the adsorption box; the top end of the adsorption box is communicated with a replacement opening; a cover plate is arranged at the replacement opening; adsorption carbon is placed in the adsorption cavity; the upper side of a left side wall of the adsorption box is communicated with an exhausting fan; and the device further comprises two groups of supporting columns, a supporting plate, a motor, a first connection rod, a transmission shaft and stirring blades and a second sealing ring sleeves the outer side of the transmission shaft.

The invention relates to the technical field of sewage treatment, and discloses an energy-saving and environment-friendly industrial sewage oxidation-reduction device, which comprises a shell, wherein a lamp bead is fixedly connected to the interior of the shell, a photosensitive assembly is fixedly connected to the interior of the shell, a rotating disc is fixedly connected to the interior of the shell, a long rod is movably connected to the exterior of the rotating disc, the exterior of the long rod is movably connected with a sliding block, and the exterior of the sliding block is movably connected with a push rod. According to the invention, through the interaction of all structures of the device, heavy metals in sewage can be better precipitated after wastewater enters the device, the reaction between a chemical reagent and the sewage is more sufficient under the action of a stirring rod, the reaction stage can be detected under the action of a detection assembly, and more reaction reagents are injected into the sewage in time, so that the effects of automatically detecting the sewage treatment degree and automatically adding the reaction reagents to the sewage are achieved.

The invention discloses an ultrasonic consumable electrode argon arc welding process and device. According to the ultrasonic consumable electrode argon arc welding process, ultrasonic vibration is carried out on a weld pool and parent metal around a welding joint in the consumable electrode argon arc welding process, molten metal is made to be compact and uniform in texture, metal grains at the welding joint are refined, gas separation of the weld pool is accelerated, welding stress and welding deformation are reduced, the fatigue strength of a welding connector is improved, the fatigue life is prolonged, and therefore the welding quality is largely improved. The ultrasonic consumable electrode argon arc welding device comprises an energy converter and an amplitude-change pole, wherein the energy converter is fixedly connected with one end of the amplitude-change pole, the other end of the amplitude-change pole is provided with an electrode cavity, a conductive nozzle is arranged in the electrode cavity, an electrode inlet, an air inlet and a wire port are formed in the lateral surface of the amplitude-change pole, the air inlet is communicated with the electrode cavity, and the conductive nozzle is connected with a wire. The grains at the welding joint are more refined, the metal is more compact in texture, gas separation in the welding joint is more thorough, welding deformation is reduced, the fatigue strength of the welding connector is improved, the fatigue life is prolonged, and welding quality is guaranteed.

The invention relates to the field of sewage treatment, and specifically discloses a nano-magnetic integrated sewage treatment equipment, which includes a housing, side plates are fixedly connected to both sides of the top of the housing, and a beam is fixedly connected between the two side plates. The tops of the side plates are fixedly connected with L-shaped rods, and a feeding hopper with a cover plate is fixedly connected between the two L-shaped rods. A cone is connected, the side of the cone is fixedly connected with a discharge pipe, and the discharge pipe communicates with the inside of the shell, and the top side of the shell is fixedly connected with a water inlet provided with a flow control valve. The water inlet runs through the shell, and the water inlet is eccentrically connected with a fixed column, and the bottom end of the fixed column is provided with a plurality of water outlet holes. The device effectively prevents the water flow from arousing the sediment at the bottom of the sedimentation tank, prevents the sediment after nano-magnetic adsorption from blocking the sewage outlet, and has the advantage of making full use of the nano-magnetism.