114results about How to "Helps fix" patented technology

The invention discloses a method for remediating petroleum-contaminated soil through coupling a charcoal-loaded surface active agent and a microorganism plant. The method comprises the following stepsof S1, applying the charcoal-loaded surface active agent into a petroleum-contaminated soil surface layer, and then standing and ageing for 80 days; S2, after ageing the soil, watering the soil on the surface layer, enabling the water content to reach to 50 to 60 percent, adjusting a pH value of the soil to be 7 to 8, and then adding a petroleum degradation microbial inoculum into the soil, and fermenting; S3, after fermenting the soil, planting a plant prepared according to different quantitative proportions in the soil, and removing the whole plant after the plant is ripe; and S4, cyclically repeating S1 to S3 until detecting that the content of a petroleum pollutant in the petroleum-contaminated soil is less than or equal to 4.5g/kg. The method for remediating the petroleum-contaminated soil through coupling the charcoal-loaded surface active agent and the microorganism plant provided by the invention adopts an in-situ remediation technology, does not damage environment during theremediation process, cannot bring secondary pollution, is green and environmental-friendly, and realizes a composite remediating mode with a good green cycle remediating effect.

The invention relates to a hydrophilic modification method of a high-flux PVDF porous membrane. The method comprises the following steps that PVDF powders, tannic acid and PVP are used as raw materials, firstly the PVDF porous membrane is prepared by adopting a phase inversion method, a metal ion solution is used as coagulation bath, by means of the strong complexing capacity of tannic acid with metal ions, a relatively stable molecular chain interpenetrating network structure is formed on the surface of the membrane and inside the membrane, thereby effectively complexing with tannic acid containing a plurality of hydrophilic groups, and the tannic acid has good complexation with PVP, so that more PVP is fixed, and finally a composite hydrophilic channel of tannic acid-PVP-metal ion is formed inside the membrane, so that a PVDF modified membrane with high flux and better hydrophilicity is prepared. The preparation method has the advantages of being wide in raw material source, low in preparation cost and simple in processing technology, and being beneficial for bulk production and marketization application and popularization, and meeting green environmental protection requirements.

The invention is applicable to the technical field of electronic devices and provides an intelligent power module manufacturing method. The method comprises the following steps: selecting a metal substrate, arranging an insulating layer and a circuit wiring on the metal substrate, installing circuit elements and pins on the circuit wiring and enabling the run of the pins to gradually incline upward; placing the metal substrate in a packaging mold, fixing the pins on a horizontal plane through a first fixing device and making the surface of the metal substrate incline relative to the horizontal plane; configuring a metal pressing block parallel to the horizontal plane and pressing the metal pressing block on the metal substrate to make the metal pressing block parallel to the horizontal plane; and injecting packaging material in the mold to seal the substrate. The metal substrate is accurately positioned in the packaging mold through the metal pressing block, holes can be prevented from being reserved in the packaging structure, and the packaging compactness is improved. After packaging is completed, the position of the metal pressing block in the packaging structure can be directly measured by using a simple measuring tool so that the position of the metal substrate in the packaging mold can be known and subsequent inspection is facilitated.

The invention provides an anti-aging impact-resistant modified wood-plastic composites (WPC) and a preparation method thereof. The wood-plastic composites are prepared from the following raw materials in parts by weight: 20-50 parts of polyolefin, 30-70 parts of enzymatic hydrolysis lignin modified vegetable fibers, 1-3.5 parts of polymerized rosin, 0.1-10 parts of an inorganic filler, 0.1-4 parts of an antioxidant, and 0.1-3 parts of an ultraviolet screening agent, wherein the enzymatic hydrolysis lignin modified vegetable fibers are prepared from enzymatic hydrolysis lignin and vegetable fibers through an anhydride reaction. According to the modified wood-plastic composites prepared by the invention, the affinity between the vegetable fibers and plastic is high, the dimensional stability of the composites is high, the rigidity and toughness are balanced, and ageing resistance is also improved at the same time; in the process of preparing the enzymatic hydrolysis lignin, a certain amount of ligninase is added, thus improving the impact resistance of the wood-plastic composites prepared from the enzymatic hydrolysis lignin modified vegetable fibres. Through the method of using the lignin to modify the vegetable fibers provided by the invention, lignin resources are fully used, waste is turned into treasure, and comprehensive utilization of the lignin resources is realized.

The invention discloses a restoration method for petroleum polluted soil by coupling bio-charcoal loaded oxidation aid and microbe and plant. The restoration method includes the following steps: S1, the bio-charcoal loaded oxidation aid is put into the surface of petroleum-contaminated soil for 80 to 100 days when being placed and aged; S2, after the soil is aged, water is sprinkled on the surfacesoil to make the water content reach 50-60%, then the soil pH is adjusted to 7-8, then petroleum degrading bacteria is added to the soil for fermentation; S3, after soil is fermented, different proportions of shrub plants are planted in soil and after the plants are matured, the plants are removed as a whole; and S4, is the steps 1-3 are repeatedly carried out until the content of petroleum contaminants in the soil of petroleum contaminants is detected to no greater than 4.5 grams per kilogram. By adopting the in-situ restoration technology, the environment can not be damaged during the restoration process, secondary pollution can not be caused, green and environmentally friendly purpose is achieved, and a green, circular, composite restoration mode is achieved with good restoration effect.

The invention discloses a triphenylamine organic dye and a synthesis method thereof. The chemical structure of the triphenylamine organic dye is as shown in a general formula (1). In the formula (1),R<1> is selected from hydrogen or styryl, R<2> is selected from hydrogen or styryl, and the following structure is a quinoxaline derivative. The triphenylamine organic dye provided by the invention has a long conjugated D-pi-A structure, and meanwhile, molecules contain cyano groups and carboxyl, and the electrondrawing group is cyanoacetic acid. The triphenylamine organic dye can be used as a solar cell sensitizer, and has a good application prospect in dye-sensitized solar cells.

The invention discloses an electrochemical oxidation treatment device of a low-salt wastewater through micro-fluid reactor. An anode plate, an insulated membrane layer and a cathode plate are arrangedin the fluid direction; insulated pad layers are arranged on the outer sides of the anode plate and the cathode plate; shells are arranged on the outer sides of the insulated pad layers. The invention also discloses an electrochemical oxidation treatment method. An insulated membrane layer is only arranged between the anode plate and the cathode plate, so that a space of polar plates is greatly reduced, and the efficiency of an electrochemical reaction process is effectively improved; when a reaction device is used alone, a high action effect is achieved; according to different electrochemical oxidation processes, materials of the polar plates can be replaced; when the different polar plate materials are connected in series and the different electrochemical processes and electrochemical parameters are adopted, wastewater containing different types of pollutant substances are treated, so that the current density is increased to the maximum limit and the electrolysis time is shortened;electrochemical oxidation reaction on organic pollutants in the wastewater is directly carried out, so that secondary pollution is avoided.

The invention discloses a portable drawing board bracket. The bracket comprises a base (1), a bracket body (2) hinged to the base (1), a duct (21) disposed in a middle of the bracket body (2) and a boss (22) arranged at the bottom of the bracket body (2), the duct (21) is provided with a moving support plate (3), the upper end of the bracket body (2) is hinged to an upper slide plate (4), the upper slide plate (4) is slidably connected with a lower sliding plate (5), the bottom of the lower slide plate (5) is hinged to a moving base (6), the moving base (6) is slidably connected with the base(1), and a fixing plate (7) is mounted on the lower end of the base (1). The portable drawing board bracket has a simple structure, is convenient to use, is convenient to carry, reduces the discomfortof drawing when used, saves physical strength, and improves drawing efficiency.

The invention discloses an automatic soilless culture production line, and belongs to the technical field of soilless culture. The automatic soilless culture production line is characterized by comprising a conveyor belt group, supporting frames and a plurality of soilless culture devices, wherein, each soilless culture device comprises a plurality of culture grooves; vegetable fixing discs are arranged on the inner walls of the culture grooves; two sliding grooves are formed in the inner wall of each culture groove, first stepping motors are arranged in the sliding grooves, and the first stepping motors are fixedly connected with the vegetable fixing discs; supporting transverse plates are fixedly connected to the outer sides of the two supporting frames correspondingly, and strip-shaped grooves are formed in the two supporting transverse plates correspondingly; second stepping motors and third stepping motors are installed in the strip-shaped grooves, the second stepping motors and the third stepping motors are connected with electric telescopic rods, rotating motors are arranged at the ends of the electric telescopic rods, and the rotating motors are connected with rotating parts; and a transverse part is fixedly connected between every two rotating parts, a plurality of sliding motors are arranged in the transverse parts, and the sliding motors are connected with picking blades. The automatic soilless culture production line is mainly used for automatically planting and picking vegetables, and the working efficiency and the automation degree are effectively improved.

The invention relates to a high-power LED spotlight. The high-power LED spotlight comprises a frame. The right end of the frame is provided with a threaded hole and a fixed rod. A telescopic rod is arranged in the fixed rod. A fixed base is arranged at the left end of the frame. A sleeve is hinged to the fixed base. A transverse plate is hinged to the middle of the sleeve. An upper threaded sleeve is hinged to the end of the transverse plate. A stud is arranged at the lower end of the upper threaded sleeve. A lower threaded sleeve is arranged at the lower end of the stud. A supporting disc is hinged to the lower end of the lower threaded sleeve. Bolts are arranged on the supporting disc. The stud provided with the upper threaded sleeve and the lower threaded sleeve is beneficial for achieving the angle of the transverse plate so that the transverse plate can be parallel to the frame. The fixed rod with the telescopic rod is beneficial for supporting the sleeve and increasing the stability of the sleeve. The supporting disc with the bolts and the threaded hole are beneficial for fixing the supporting disc, and the high-power LED spotlight is simple in structure, convenient to operate, economical and practical.

The invention discloses a leather tanning chromium-containing waste treatment method, which aims to solve the problems that hazardous wastes including chromium leather shavings and chromium mud can be generated during leather tanning, a small amount of trivalent chromium is converted into hexavalent chromium due to direct incineration of the chromium leather shavings, the toxicity of waste residues after combustion is increased, the treatment difficulty is increased, the nitrogen content of the chromium leather shavings is high, the nitric oxide content in combustion smoke is high, and the smoke treatment cost is high. The chromium leather shavings and chromium mud are treated through the four working stages of pretreatment, roasting, post-treatment and smoke treatment, the problem existing in landfill after direct incineration or direct landfill of the chromium leather shavings is solved, and recycling of waste resources is achieved,. The leather tanning chromium-containing waste treatment method has good environmental benefits and economic benefits.

The invention discloses an anchor rod construction device for building engineering. The device includes an anchor head, a first hollow rod, positioning fastening bodies, a second hollow rod, a backingplate, pressure plates, elastic control main bodies and a gate valve; the first hollow rod is connected to the second hollow rod through a sleeve; the middle position of the sleeve is provided with apour plug port; the pour plug port is provided with the gate valve; the gate valve is connected to the elastic control main bodies; one ends of the elastic control main bodies are connected to the pressure plates; the two sides of the sleeve are welded with the positioning fastening bodies; the end, away from the sleeve, of the first hollow rod is connected to the anchor head; the end, away fromthe sleeve, of the second hollow rod is connected to a slurry stopping plug; the outer end of the slurry stopping plug is connected to the backing plate; one end faces of the positioning fastening bodies are connected to the backing plate through elastic control connecting rods; the elastic control connecting rods pass through the backing plate; and the surfaces of the elastic control connecting rods are provided with elastic control switches. Through the arrangement of the sleeve and the positioning fastening bodies, the device can have functions of balancing a middle end and strengthening the bearing capacity of rock mass.

The invention belongs to the technical field of molecular sieve performance optimization, and particularly relates to a ZSM-5 molecular sieve and a mesoporous treatment method and application thereof. The microporous ZSM-5 molecular sieve is subjected to mesoporous treatment at normal temperature and normal pressure, so that the ion exchange capacity of the molecular sieve is greatly improved, pore channels suitable for silver ions to enter are 96% or above, the highest silver loading capacity can reach 43.36 WT% and is improved by about 2% compared with the silver loading capacity of a commonly-used silver-loaded NaY type zeolite molecular sieve, and the antibacterial effect is obviously improved; besides, after the antibacterial agent is added into a polymer modified material, the antibacterial effect of Ag is greatly exerted, and the problems of durability of a silver antibacterial material and odor of a polymer material are solved.

The invention discloses an integrated shielding curtain winding device, which comprises core iron, an inner pipe for winding a shielding curtain, and a spring ball and a torsion spring arranged in one end of the inner pipe, wherein the spring ball is formed by buckling a male spring ball and a female spring ball; a central hole coaxial to the core iron is preserved on the spring ball; one end of the core iron is connected with an outer seal cap, and the other end of the core iron is connected with a core iron fixing block; a compressed spring is also sleeved on the core iron and is arranged in the central hole preserved on the spring ball. According to the integrated shielding curtain winding device, three clamping tenons are arranged on the core iron and are used for fixing the core iron and relevant parts, the usage of partial parts is reduced, the product cost is reduced, the assembling is convenient, the whole stability is excellent, and meanwhile, the clearance between the shielding curtain and a side body can also be effectively improved.