132results about How to "Production operation safety" patented technology

A motorcycle assembling and testing integrated flexible production line circulating horizontally on the ground is composed of an endless master roller-chain conveyer line arranged horizontally underground, the assembling workstations at the side of said master conveyer, the flat base plates of assembling fixture on said roller-chain, performance test position, performance test system, and returning-repairing line.

The invention discloses a construction and application of an engineering bacteria secreting and expressing chitosan deacetylase, belonging to the technical field of fermentation engineering. The construction firstly constructs a recombinant Bacillus subtilis secreting and expressing chitosan deacetylase gene by a different source, and adds a signal peptide fragment yncM in the recombinant vector for a first time, wherein the signal peptide can secrete target protein chitosan deacetylase outside cells of the recombinant Bacillus subtilis, and obtain mutants in a non-translation region at 5' end, so that the expression of the target protein is significantly increased and steps of subsequent enzyme separation and purification are greatly simplified. The enzyme activity of obtained chitosan deacetylase is up to 1548.7 U/ mL and the yield of chitosan deacetylase is up to 620 mg/ L when fermentation medium is fermented and cultured for 50-60 hours. And meanwhile, the method has the advantages of low production cost, mild production conditions, simple purification process, safe operation and the like.

The invention discloses a preparation method and application of a low toxicity acidizing corrosion inhibitor. The preparation method mainly includes two steps: 1. synthesizing a Mannich base quaternary ammonium salt; and 2. diluting the Mannich base quaternary ammonium salt to 15-20% (mass percentage) with a solvent. The corrosion inhibitor disclosed in the invention is a typical adsorption type corrosion inhibitor, can rapidly form a compact and firm hydrophobic protective membrane on the surface of a P110 steel test piece, thus effectively preventing an acid solution from corroding P110 steel. The corrosion inhibitor prepared in the invention belongs to a mixed corrosion inhibit inhibitor. The inhibitor employs cinnamic aldehyde with the advantages of the green, low toxicity, easy degradation and the like to replace the cancerogenic substance formaldehyde, is not added with iodide, alkynol or other synergists polluting the environment, has the advantages of simple synthesis process, small dosage, low toxicity, etc., and is suitable to oil and gas well acidizing, acid fracturing stimulation and other operations.

The invention discloses a method for preparing a bisphenol compound antioxidant product by using an organic acid catalyst. A closed reactor is adopted, water is used as reaction solvent, a liquid organic acid catalyst is selected as a catalyst, and the bisphenol compound antioxidant product is generated through the condensation reaction of dialkyl phenol and aliphatic aldehyde. The liquid organicacid catalyst is one or a mixture of more of long-chain alkyl benzene sulfonic acid, long-chain dialkyl benzene sulfonic acid, long-chain alkyl diphenyl ether disulfonic acid and long-chain dialkyl diphenyl ether disulfonic acid and aliphatic hydrocarbon of C6 to C10 or aromatic hydrocarbon of C6 to C8 in a mass ratio of 1: 0.1-1.0. The dosage of the liquid organic acid catalyst is 7 to 30 percent by mass of dialkyl phenol; the mass ratio of the water to the dialkyl phenol is 2-5:1; and the molar ratio of the aliphatic aldehyde to the dialkyl phenol is 0.45-0.60: 1. The reaction pressure is 0to 0.1MPa, the reaction temperature is 60 to 95 DEG C, and the reaction time is 4 to 7 hours. The raw material variety used by the method is reduced, and the production efficiency is improved; and the method avoids using sulfuric acid and hydrochloric acid with stronger corrosion on the equipment.

The invention relates to a reduction carbonization method of the titanium-bearing material, which belongs to the metallurgy field. The invention solves the technology difficult problem that the bottom of a furnace rises and the generated foamed slag is excessive during the reduction carbonization process of the titanium-bearing material. The reduction carbonization method of the titanium-bearing material in the invention has various power distribution systems in the various implementation stages of material melting, reduction carbonization, and discharging; during the material melting stage, the transformer capacity is fully exerted, to ensure that the material is melted quickly; during the reduction carbonization stage, the electric furnace power is controlled to ensure that the depth of a steady foamed slag layer does not exceed 50 percent of the depth of a material melting tank; during the discharging stage, the electric furnace power is enhanced, to ensure that the melted and carbonized slag flow out of an electric furnace steadily, and the power cannot be shut off during the discharging. The reduction carbonization method of the titanium-bearing material of the invention can realize continuous production, the production operation is secure, the reduction carbonization power consumption and the production cost are reduced, the production efficiency is enhanced, and the invention has broad application prospect.

The invention relates to tetrafunctional surface treatment fluid for steel, the ingredients of which are: phosphoric acid: 60kg, polyvinyl alcohol: 0.2kg, zinc oxide: 2kg, zinc nitrate: 0.5kg, tartaric acid: 1.5kg, metal cleaner: 8611kg, ammonium molybdate: 0.36 kg and the rest of water. The product does not lead to environmental pollution and can guarantee the safety of production operation. Scientific material proportion ensures the product is limpid and has good stability. The invention has excellent derusting ability and can dispose of scale cinder attached on the surface of the steel, prevent an electrolyte from expansion and effectively control filiform corrosion under a film and corrosion in the breakage of a film coating. As for the usage method, dipping, spraying, brushing and wiping are all allowed. Simplification ensures that the operation process can be completed at one time.

The invention relates to a preparation technique for children cough oral liquid, which comprises the following steps in turn: (1) extracting primary liquid medicine; (2) purifying the primary liquid medicine to obtain clear solution, and further condensing the clear solution to obtain extractum; and (3) preparing the liquid medicine by the extractum, flavoring and water, and then obtaining the children cough oral liquid after filtering and condensing the liquid medicine in turn, in particular, in step (2), the purifying means filtering the primary liquid medicine through an ultramicro filter film; and in step (3), the filtering is also carried out by the ultramicro filter film. Through adopting the ultramicro filter film to effectively filter the primary extracted liquid medicine, the preparation technique achieves non-alcoholization production, simplifies processes, shortens production period, and reduces energy consumption and production cost; and at the same time, through adopting a filtering technique of a tubular ultrafilter film to carry out terminal filter for the prepared liquid medicine, the preparation technique ensures the content of effective components, improves clarity of the liquid medicine, improves quality of products, and ensures quality stability of the products.

The present invention is weather resistant water-retaining agent and its preparation. The weather resistant water-retaining agent has relatively high ultraviolet ray resistance and may be used widely in agriculture, forest, garden and other outdoor fields. The present invention features the neutralizing process with polymerization of acrylic acid; dissolving great amount of acrylamide into the neutralizing liquid to lower the temperature; composite reaction initializing system for reaction at different temperature conditions; greatly increased N, Ní»-methylene diacrylamide and acrylamide amount for raised weather resistance and lower production cost of the water-retaining agent; controlled reaction strength for high water absorbing capacity of the water-retaining agent, and disc polymerization with no need of nitrogen protection and short reaction time.

The invention belongs to the field of powder coating and particularly relates to a metal bonding powder coating with a mirror-like silver effect as well as a preparation method and application thereof. The powder coating is prepared by binding base powder and aluminum powder, wherein the base powder is prepared from the following raw materials in percentage by weight: 82 to 85 percent of polyester resin, 12.5 to 15 percent of curing agent, 0.8 to 1 part of leveling agent, 0.3 to 0.5 percent of benzoin, 0.8 to 1 percent of sensitizer and 0.3 to 0.5 percent of antioxidant. The preparation method of the metal bonding powder coating comprises the following steps of uniformly mixing raw materials, performing melt extrusion by an extruder, and performing tabletting, air cooling, grinding and sieving to obtain the base powder; binding the aluminum powder and the base powder. The powder coating disclosed by the invention has the characteristics of good corrosion resistance, good wear resistance, excellent decorating performance, good environment friendliness and no toxicity; the preparation method has the advantages of less investment, low cost, safe production and operation and in accordance with the requirements of large precise product manufacturers at home and abroad; a coating film of the coating has the advantages of high glossiness, high anti-pollution capacity, good greenness, good environmental protection and wide application field.

The invention proposes a prefabricated part production and transportation system. The system comprises at least one prefabricated part production and transportation line; the prefabricated part production and transportation line comprises a prefabricated part transportation car, a prefabricated part lifting car and a walking rail; the prefabricated part transportation car and the prefabricated part lifting car are operated on the walking rail; the prefabricated part lifting car includes a walking platform and a lifting device; the walking device is arranged at the bottom of the lifting device, and includes two longitudinal walking brackets, a second driving device and at least two sets of lifting walking wheels; the lifting walking wheels are arranged at the bottoms of the longitudinal walking brackets; the lifting device includes a lifting frame and a lifting hook component; the lifting hook component is arranged at the top of the lifting frame; and a lifting walking mechanism is arranged at the lower part of the lifting frame, and can move corresponding to the walking platform. The system shortens the lifting transfer time, and saves the field occupied area of the production line.

The present invention relates to a preparation method for L-ornithine-alpha-ketoglutarate. The L-ornithine-alpha-ketoglutarate is produced by arginase transformation. The preparation method comprises the following steps: (1) preparation of immobilized enzyme; (2) optimization of transformation conditions; (3) product extraction and refining process. Compared to the prior art, the preparation method of the present invention has the following advantages that: the preparation method of the present invention has characteristics of low production cost, mild production conditions, less impurities in the transformation system, simple process steps, safe production operation and high purity; qualified products meeting the light transmission requirements can be synthesized; each liter of the reaction solution contains 300-320 g of the L-ornithine-alpha-ketoglutarate, and the transformation efficiency of the alpha-ketoglutaric acid is more than 90%; the preparation method further has other advantages.

The invention relates to a spinning and dyeing pretreatment auxiliary agent, which is prepared by adopting the following raw material components: 30 to 50 parts by weight of desizing agent, 5 to 20 parts by weight of alkali-resisting penetrant, and 4 to 10 parts by weight of complexing agent; the desizing agent is multi-alkyl amine salt; the alkali-resisting penetrant is an alkali-resisting nonionic surfactant; the complexing agent is hydroxy carboxylate. Further, the adopted raw material components also include 1 to 10 parts by weight of hydrogen peroxide stabilizer; the hydrogen peroxide stabilizer is organic phosphonate. The spinning and dyeing pretreatment auxiliary agent can be obtained through the preparation of successively mixing the raw material components, and the spinning and dyeing pretreatment auxiliary agent can be applied to a cold-batch method or open-width scouring-bleaching method spinning and dyeing pretreatment process. The spinning and dyeing pretreatment auxiliary agent can shorten the flow of the conventional spinning and dyeing pretreatment process, can reduce the energy consumption and material consumption in the pretreatment process, and can reduce the effluent volume; an obtained intermediate product of textile fabrics has good whiteness, capillary effect and desizing percentage.

The invention relates to a solid-state heavy metal waste water treatment agent and an application method thereof. The solid-state heavy metal waste water treatment agent comprises, by weight percentage, 35-65% of calcium bentonite, 5-15% of calcium oxide, 5-10% of magnesium oxide, 1-15% of iron sesquioxide, 2-10% of sodium carbonate and 2-15% of calcium hypochlorite. The application method includes: adding the solid-state heavy metal waste water treatment agent into waste water containing heavy metal ions, and continuously stirring for 5-60 minutes; then performing liquid-solid separation, and discharging water with the heavy metal being removed. By the method capable of treating the waste water, containing the heavy metal, of electroplating and etching liquid, the heavy metal content in the discharged water can reach below 0.5-1ppm, and the heavy metal removing rate in low- and medium-concentration waste water can reach more than 90-99%.

The invention relates to a preparation method of an aluminum alloy surface film, and belongs to the technical field of surface films. The aluminum alloy surface film is prepared by adding cerium, corrosion of the external corrosion atmosphere to the surface of a matrix material and permeation of corrosion liquid to a conversion film are effectively blocked or delayed, an aluminum alloy matrix is protected against corrosion, and the corrosion resistance of aluminum alloy is improved. As a silicon dioxide ceramic film is prepared on the surface of the aluminum alloy, the corrosion resistance ofthe aluminum alloy is improved, the chemical properties of silicon dioxide are stable, and the etching-resistant capacity is high; and sol-gel method equipment adopted for preparing the silicon dioxide ceramic film is simple, the sintering temperature is low, large workpieces can be coated, good repeatability is achieved, the grain diameter of coating components is controllable, dispersion of themolecular level among the components can be achieved, the surface of the aluminum alloy can be effectively coated with the silicon dioxide ceramic film, the aluminum alloy matrix can be effectively protected against corrosion, and therefore the use time of the aluminum alloy is prolonged.

The invention provides a fabricated part production and transport system which comprises one or more fabricated part production and transport lines, each fabricated part production and transport line comprises a fabricated part transport cart, a transport rail, a fabricated part hoisting cart and a hoisting rail, the corresponding fabricated part transport cart and the corresponding fabricated part hoisting cart operate on the transport rail and the hoisting rail respectively, the width of the corresponding hoisting rail is larger than that of the corresponding transport rail, and the corresponding transport rail is arranged on the inner side of the corresponding hoisting rail; the corresponding fabricated part hoisting cart comprises a walking platform and a hoisting device, and the corresponding walking platform is arranged at the bottom of the hoisting device; the corresponding walking platform comprises two longitudinal walking supports, a second drive device and two or more groups of hoisting and walking wheels, the corresponding second drive device drives one or more of the hoisting and walking wheels to move on the hoisting rail, and the hoisting and walking wheels are arranged at the bottom of the longitudinal walking supports. In this way, hoisting and transferring time is reduced, and the occupied area of a production line site is saved.

The invention provides a material peeling device with a visual identification system and a material peeling method. The material peeling device comprise a supporting structure, a material fixing system, a cutter feeding and rotating system and the visual identification system; wherein the material fixing system comprises a first motor, a driving shaft and a telescopic screw rod. One end of the telescopic screw rod is driven by an air cylinder, the other end of the telescopic screw rod is connected with a rotating rod in a sleeved mode, and clamping pieces are fixedly arranged at the ends of the driving shaft and the rotating rod; and the cutter feeding and rotating system comprises a cutter feeding system and a cutter rotating system. The visual identification system comprises a light source system, a contour line sensing system and a control system. According to the device and method, the peeling thickness is constant and adjustable, and full-automatic peeling of roots, stems and fruits, particularly materials with hard skin such as gold-jujube persimmons is realized. The pulp yield is remarkably improved, and the production operation is safe and environment-friendly. The device is simple in structure, high in stability and high in reliability, and can be applied to occasions with different production batch requirements of families and enterprises.

The invention discloses a device and a method for monitoring longitudinal tear of a conveying belt. The device comprises a vibration source, a vibration signal receiving module and a vibration signal processing module. The vibration source is used for allowing the conveying belt to generate transverse vibration. The vibration signal receiving module is used for receiving vibration signals generated by the conveying belt under the action of the vibration source and transmitting the vibration signals to the vibration signal processing module. The vibration signal processing module is used for judging whether longitudinal tear occurs or not according to the vibration signals and controlling the conveying belt to stop when longitudinal tear occurs. By the device, the convey belt can be stopped timely when longitudinal tear of the conveying belt occurs, and accordingly safe production is guaranteed, safety accidents caused by longitudinal tear of the conveying belt can be avoided, and damage to conveying devices can be avoided.