239results about How to "To achieve the effect of recycling" patented technology

A method and a device for processing metal materials with cryogenic laser shock belong to the fields of laser processing and subzero treatment. The device comprises a cryogenic treatment cavity, a laser, a liquid nitrogen tank, a temperature sensor and the like. The method is used for strengthening the materials in an ultra-low temperature environment by adopting the laser shock processing technology, insulating the materials for a period after the strengthening process, and heating the materials to be as hot as the ambient temperature. In the ultra-low temperature environment, the metal materials shrink, and a large quantity of dislocation is generated in the materials; due to the instant impact effect of the laser shock processing technology, the high-density dislocation in the materials moves at a high speed, so as to induce high-density nano twin crystal, which ensures that the materials have superior tenacity as well as high intensity, and brittle failure of the metal materials in the low-temperature environment can be avoided effectively; and a large quantity of nano educt is dissolved out from the materials, and the conversion of residual austenite as well as the thinning of martensite and crystal can be promoted effectively, which remarkably improves the mechanical properties and the mechanical properties of the materials.

The invention discloses an environment-friendly epoxy resin composition as well as a preparation method and application thereof. The composition is mainly prepared from epoxy resins and an amine curing agent, and is additionally provided with appropriate auxiliaries such as curing accelerator, moist dispersing agent, defoamer, flatting agent and the like, filling materials and xylene serving as asolvent. After being cured, the composition has good adhesive force, and excellent comprehensive performances such as mechanical performance, waterproof performance and anti-corrosion performance, and can be widely used in terrace, adhesive, anticorrosive paint and the like.

The invention provides a processing method for alkali-minimization wastewater, comprising a plurality of steps: (a) adjusting the PH value of alkali-minimization wastewater into 6.5 to 7, using the method of acid precipitation to obtain liquid phase and the solid phase with terephthalic acid; (b) carrying out esterification reaction for the solid phase from the procedure (a) in the presence of methanol to obtain a crude dimethyl terephthalate product. The method recovering terephthalic acid from alkali-minimization wastewater makes CODcr value of the wastewater removal of more than 75% and modifies the wastewater into Biodegradable industrial wastewater and at the same time changes the phthalic acid into dimethyl terephthalate.

The invention discloses a sulfur autotrophic short-cut denitrification coupled anaerobic ammonia oxidation denitrification system and a sulfur autotrophic short-cut denitrification coupled anaerobic ammonia oxidation denitrification method. The system comprises an anaerobic reactor, a nitrification reactor, a first intermediate water tank, a second intermediate water tank, a sulfur autotrophic short-cut denitrification reactor, an anaerobic ammonia oxidation reactor and a sulfide wastewater storage device. Sewage respectively enters the anaerobic reactor and the nitrification reactor, and is respectively subjected to anaerobic reaction and anaerobic-aerobic reaction; the sewage subjected to aerobic nitrification and sulfide wastewater enter the sulfur autotrophic short-cut denitrificationreactor together, and nitrate nitrogen is reduced into nitrite nitrogen to realize accumulation of nitrite nitrogen; the sewage subjected to short-cut denitrification and the sewage subjected to anaerobic treatment and rich in ammonia nitrogen enter the anaerobic ammonia oxidation reactor together to remove nitrogen. According to the method, stable accumulation of nitrite nitrogen is realized by applying sulfur autotrophic short-cut denitrification, an external carbon source is not needed, the aeration rate is low, the operation control is simple, sulfur in sulfide wastewater can be recycled,and a new method is provided for efficient denitrification of low-C/N domestic sewage.

The invention relates to the technical field of iron casting cooling, in particular to an iron casting cooling device. The iron casting cooling device comprises a water storage tank. A controller is arranged on the outer surface of the water storage tank. A cooling containing plate is arranged at the upper end in the water storage tank. Drain holes are formed in the surface of the cooling containing plate. A circulating water pump machine is arranged on the bottom face in the water storage tank and electrically connected with the controller. A connecting water pipe is arranged on a water outlet of the circulating water pump machine. A spray pipe is arranged on the side face of a current divider box. Spray heads are arranged on the surface of the spray pipe. The spray pipe is located on the upper surfaces of supporting plates. The two supporting plates are symmetrically mounted on the upper surface of the water storage tank. According to the iron casting cooling device, by additionally arranging the circulating water pump machine, a cooling solution in the water storage tank can be sprayed out from the spray heads through the spray pipe, the effective heat dissipation treatment can be conducted on iron castings, the cooling consuming time of the iron castings is shortened, the used cooling solution can be recycled as well, the circulating use effect is achieved, and waste of resources is reduced.

The invention belongs to the environmental protection technical field, and in particular relates to a desalination method of waste water. The method is characterized by comprising the following steps: A. pre-cooling saline waste water to 0 DEG C; B. freezing the saline waste water at 0 DEG C into ice at the temperature of 0 to -25 DEG C for 3-10 hours to form two parts of residual saline water and an ice phase; C. carrying out solid-liquid separation on the residual saline water and the ice phase obtained by freezing; and D. melting the ice phase, wherein, the energy generated during the ice phase melting process is used for pre-cooling the saline waste water in step A. Compared with the traditional freezing method, about 80% of electricity consumed during the treatment process can be stored and recycled, thus greatly reducing energy consumption and having obvious significance of energy conservation and emission reduction.

The invention discloses a cleaning device for rubber product machining. The cleaning device for rubber product machining comprises a base, and the top of the base is sequentially provided with a water tank, a cleaning box and a controller from left to right; and a first water pump is fixedly installed in the water tank, a water conveying pipe communicates with the conveying port of the first water pump, one end, far away from the water conveying pipe, of the first water pump penetrates through the water tank and extends into the cleaning box, shell bodies are fixedly connected to the two side of the inner wall of the cleaning box, a motor base is fixedly connected to\ the bottom of the inner wall of each shell body, and a first motor is fixedly connected to the top of each motor base. According to the cleaning device for rubber product machining, by installation of the interior of the cleaning box, by cooperative installation of first motors, rotary rods, support rods, sleeves and brushes, and by installation of a second motor, positioning blocks, limiting plates, rotating shafts, clamps and rotating wheels, the thorough effect of rubber product cleaning is achieved, the quality of rubber products after being machined is improved, and the sale quantity of the rubber products is increased.

The invention discloses a height adjustable type water circulation water cutting machine which comprises a water tank; a booster is arranged in the water tank; a second filter plate sleeves the outer part of the booster; the top of the second filter plate is fixedly connected with a water transmission pipe; one side of the water transmission pipe is fixedly connected with a first filter plate; one side of the water tank is provided with a water inlet pipeline; a water inlet valve is arranged on the water inlet pipeline; and the other side of the water tank is provided with a water outlet pipeline. According to the height adjustable type water circulation water cutting machine, with arrangement of connecting rods, a telescopic rod and a hydraulic lifting device, the effect that the height of the cutting machine can be freely adjusted is reached; in addition, as the stability of the telescopic rod after lifting up and down is good, a danger is not liable to occur; and with mutual matching of a first filter screen, a second filter screen, a third filter screen, a wastewater recovery hole and a wastewater recovery pipe, used water is recovered again, the effect of recycling is reached, the resources are saved, and the cost is lowered.

The invention relates to etching equipment, in particular to printed circuit board (PCB) etching equipment for production of an electronic display screen. The PCB etching equipment, which can be usedfor reducing labor intensity of a worker, is high in etching efficiency and is convenient to operate, for the production of the electronic display screen is provided by the invention. In order to solve the technical problem, the PCB etching equipment for the production of the electronic display screen comprises a left rack, a first pipeline, a first one-way valve, a support rod, a bottom plate, amobile device, a lifting device, a rotation device, a liquid transmission device and a second one-way valve, wherein the left rack is welded at a left side of the top of the bottom plate, and the liquid transmission device is arranged at a lower part of a right side of the left rack. By the PCB etching equipment, the rotation direction of an electric winding wheel is controlled, the effects of rapidly collecting and placing a PCB is achieved by matching of the electric winding wheel and a first spring, a rotation motor is controlled to rotate, a cam and a second spring are matched with each other, an etching liquid is stirred by rotating rotation blades, so that the PCB and the etching liquid are in full contact, and the etching efficiency is improved.

The invention discloses a northern residential district sewage processing system and method. The system comprises a grating tank, an adjusting tank, a magnetic separation water purification unit and a constructed wetland unit. The grating tank, the adjusting tank, the magnetic separation water purification unit and the constructed wetland unit are connected in order through water pipes. According to water quality characteristics of northern residential district sewage, the sewage processing system combined with a magnetic separation water purification technology and a modularized constructed wetland technology is provided, processing advantages of the magnetic separation water purification technology and the modularized constructed wetland technology to pollutants are utilized fully, processing quota of the two novel technologies are distributed reasonably, removal of suspended organic matters, suspensions and total phosphor in sewage is mainly finished during the magnetic separation water purification technology process, and removal of the total nitrogen, ammonia nitrogen and dissolved organic matters is finished by the modularized constructed wetland. The problems are solved that a constructed wetland technology unit is employed alone, the land occupation area is large, obstruction is easy to happen inside the wetland, and ammonia nitrogen and total nitrogen are difficult to meet the water quality standard.

The invention discloses a velvet removal device for printing and dyeing which is convenient for singeing and lint removal. It comprises a support leg and a base. The surface of the support leg is fixedly connected with a velvet removal chamber. The inner ring of a bearing is fixedly connected with a first rotating shaft, the surface of the first rotating shaft is fixedly connected with a support roller shaft, the surface of the support roller shaft is rotatably connected with a fabric, the inner wall of the lint removal chamber is fixedly connected with a support plate, and the bottom of the support plate is provided with There is a heating tank, the inner wall of the heating tank is fixedly connected with an electric heating tube, and the inner wall of the electric heating tube is fixedly connected with an electric heating wire. The velvet removal device for printing and dyeing that is convenient for singeing and lint removal, when scalding and lint removal is required, the switch is turned on, the electric heating wire heats the electric heating tube, and the electric heating tube scalds the cloth to achieve the effect of heating singeing, thereby effectively It solves the problem that ordinary singeing machines tend to leave miscellaneous wool after scalding the fabric, which affects the effect of wool removal to a certain extent.

The invention discloses an efficient energy-saving environment-friendly dust treatment device which comprises a base.The upper surface of the base is sequentially provided with a water tank, a dust removal box and a controller from left to right.The right end of the base is provided with a garbage collection box.The bottom of the dust removal box is provided with a blow-off pipe.The end, away from the dust removal box, of the blow-off pipe sequentially penetrates through the upper surface and the right side face of the base and extends out of the base.A primary dust removal device is arranged on the lower middle portion of the inner wall of the right side of the dust removal box.An ultraviolet disinfection lamp is arranged on the upper middle portion of the inner wall of the right side of the dust removal box.An air inlet pipe is arranged on the right side face of the dust removal box in a penetrating mode.The air inlet pipe extends into the dust removal box and is connected with the primary dust removal box.According to the efficient energy-saving environment-friendly dust treatment device, the primary dust removal device and a secondary dust removal device in the dust removal box achieve the effect of thoroughly filtering and removing dust, water treated through the secondary dust removal device falls into a sedimentation basin, a water pump recycles clean water into the water tank again, and water resources are saved.

The invention provides a pig iron perforating device based on circulation of a cooling liquid. The pig iron perforating device comprises a main body; an electric push rod and a fixing part are arranged in the main body; a perforating mechanism is arranged at the lower end of the electric push rod; a groove is formed in the fixing part; a reset mechanism is installed in the groove; a movable rod isfixedly installed at the lower end of the reset mechanism; and a cooling liquid air bag is installed in the fixing part. According to the pig iron perforating device based on circulation of a coolingliquid circulation, a separating device is driven to work by a rotating shaft; a liquid mixture of the cooling liquid and scrap iron is stirred uniformly; when the separating device rotates, an electromagnet at the shaft end of a fixed rod is driven to rotate by a centrifugal force generated during rotation; the scrap iron in the cooling liquid is adsorbed through the electromagnet; the cooling liquid is filtered again; and the filtered cooling liquid enters the cooling liquid air bag through a circulating pipeline, so that the cooling liquid is recycled.

The invention discloses a microalgae biomembrane culture method capable of simultaneously improving biomass yield and oil yield. The method is characterized by comprising the following steps of: step1, pre-culturing microalgae: inoculating a culture medium bottle with a trace amount of algae liquid for pre-culturing until microalgae cells grow to a later stage of logarithmic growth; step 2, immobilizing the microalgae cells: immobilizing the pre-cultured microalgae cells to obtain a microalgae biomembrane; step 3, regulating and optimizing a culture medium: adding a certain amount of organiccarbon source into a standard culture medium so as to realize the combination of photosynthetic autotrophy and heterotrophism in a culture process of the microalgae, and regulating and optimizing theratio of inorganic carbon to organic carbon and the ratio of total carbon to total nitrogen in the culture medium so as to realize water circulation and the increase of the biomass yield and oil yieldof the microalgae; step 4, performing inoculation; step 5, performing culturing by combining photosynthetic autotrophy and heterotrophism; and step 6, collecting cells. The method can be widely applied to the fields of energy, biology, especially microalgae industrial culture.

The invention discloses a clean and high-conversion-rate preparing method of 2,2,2-trifluroacetophenone. The method includes the following steps of S1, making N,O-dimethylhydroxylamine hydrochloride as the raw material react with organic alkali to obtain free N,O-dimethylhydroxylamine; S2, making trifluoroacetic anhydride react with free N,O-dimethylhydroxylamine to generate N,O-dimethyltrifluoroacetamide; S3, making a Grignard reagent react with N,O-dimethyltrifluoroacetamide to prepare trifluroacetophenone, recovering N,O-dimethylhydroxylamine generated in the step S1, applying N,O-dimethylhydroxylamine to the step S2, and recycling the reaction solvents used in the steps S1, S2 and S3. By means of the preparing method, prepared high-nucleophilicity N,O-dimethyltrifluoroacetamide reactswith the Grignard reagent, 2,2,2-trifluroacetophenone is efficiently prepared, meanwhile produced byproducts can be applied for preparing N,O-dimethyltrifluoroacetamide, and a recycling effect is achieved.

The invention belongs to the technical field of energy-saving and environmental protection, and particularly relates to a full-automatic suspended ferromagnetic metal powder recovery device. The full-automatic suspended ferromagnetic metal powder recovery device comprises a base. Two first supporting columns are fixedly connected to the upper surface of the base. Power holes are formed in the upper ends of the two first supporting columns. First bearings are fixedly connected to the inner walls of the power holes. Rotary shafts are fixedly connected to the inner rings of the two first bearings. A waterproof tank is fixedly connected to the surface of one first supporting column. In the practical using process of the full-automatic suspended ferromagnetic metal powder recovery device, the on-off cycle time of a first time switch and a second time switch is controlled according to requirements; when the first time switch is turned on, a coil is electrified, soft iron bars generate magnetic force, ferromagnetic metal powder in air is firmly attracted to the surface of an attraction box, and the second time switch is in an off state at this moment; and a required time later, the soft iron bars still have the magnetic force before the first time switch is turned off.

The invention discloses a reducing method for lead dioxide in waste lead plaster, and belongs to the recycling field of the lead dioxide in a waste lead storage battery. The waste lead plaster contains about 30% of PbO2, and during recycling, the PbO2 is required to be converted into bivalent lead (lead oxide or lead sulfate) for being recycled. According to the reducing method, sodium hydrogen sulfite is adopted as a reducing agent for PbO2 in the lead plaster, and sulfuric acid is used as an assistant for converting the PbO2 into lead surface and converting the sodium hydrogen sulfite into sodium sulfate. The sodium sulfate is regenerated into the sodium hydrogen sulfite by use of calcium hydrogen sulfite for being recycled for reducing reaction of PbO2 in the lead plaster, and an obtained byproduct calcium sulfate can be further comprehensively utilized. The calcium hydrogen sulfite for regenerating can be prepared from calcium hydroxide or sulfur dioxide in calcium carbonate absorbing smoke gas. The method has the advantages of being high in lead conversion rate and low in cost.