40results about How to "Strong operational safety" patented technology

The present invention provides a batch pneumatic testing device for contact type smart cards, comprising an upper computer running a batch downloading testing software, a test instrument mainboard, an interface adapter board, a test fixture, and a power supply starting switch; wherein the test instrument mainboard is in communication connection with the upper computer, and is also in communication connection with the interface adapter board. The batch pneumatic testing device of the present invention can simultaneously achieve downloading test of a plurality of contact type smart cards, and is simple and convenient in testing, high in testing efficiency, and accurate in testing result.

The invention discloses a method for reducing acrylamide in starch-type fried food. The method comprises the following steps: firstly, immersing a starch-type food raw material in a natural extract aqueous solution for a period of time at a given temperature; removing water on the surface of the processed food raw material, and frying the food raw material at a certain vacuum degree; cooling the fried food to a room temperature, encapsulating the cooled fried food by using a polyethylene composite packaging bag filled with nitrogen with a volume percentage content of 70 to 99.9 percent, the packaged fried food is radiated by adopting electron beams / X rays generated by an electronic accelerator with an energy of 5 to 10 MeV, a beam current of 0.3 to 20 mA and beam power of 10 to 20 kW, and the radiation dosage is controlled at 1 to 5 kGy. When in work, the ambient humidity is limited at less than or equal to 60 percent. The method has the characteristics that the pretreatment of natural products is used to inhibit the radiation-induced odor, and the low-temperature vacuum frying is used to control a generation amount of the acrylamide, so that the content of the acrylamide in the starch-type fried food can be significantly reduced by utilizing low-dosage radiation, the nutritional quality and sensory quality of the food can be maintained, the sterilization can be realized, the sanitation is improved, and the food quality and security can be ensured.

The invention relates to a method for ozone assisted ultraviolet degradation of pesticide residues in wolfberry fruits, and belongs to the technical field of ozone assisted ultraviolet degradation of residues of the following two restricted pesticides: acetamiprid and imidacloprid, in the wolfberry fruits. The method comprises the following steps: spreading dry wolfberry fruits on a tray to make the accumulation thickness be 0.5-20cm; and placing the tray with the wolfberry fruits in an irradiation box, and irradiating with ultraviolet rays with the intensity of 450-900[mu]W / cm<2>, generated by an ultraviolet ray emission device in the irradiation box, for 4-12h, wherein the ultraviolet irradiation box is a closed box body, and 1.5-3.5mg / m<3> of ozone is distributed in the ultraviolet irradiation box. The method has the advantages of safety, healthiness, no residual, no influences on the quality of the wolfberry fruits, no pollution to environment, low carbon, energy saving, easy combination with present wolfberry fruit processing technologies, easy realization of industrialization, and cost saving.

The invention discloses a method for reducing ammonia in mainstream smoke of cigarettes, which includes: packing tobacco / finished cigarettes with paper cartons with a stacking thickness of 26-72cm and a stacking density of 0.20-0.34g / cm<3>; placing the cigarette cartons on a conveying device at the conveying speed of 0.02-0.3m / s, and subjecting the cartons to electronic beam / X-ray irradiation generated by an electronic accelerator, wherein the electronic accelerator is 5-10MeV in energy, 0.3-20mA in beam current, 10-20kW in beam power, 100cm in largest scanning width, 5-15Hz in scanning frequency, 1-10kGy in irradiation dose and 5-35 DEG C in set operating temperature; allowing the cartons to pass a scanning widow of the electronic accelerator twice for irradiation, wherein the distance from the center of each carton to the scanning window of the electronic accelerator is 40-60cm in irradiation; and limiting the ambient humidity to be no larger than 60% in operation.

The invention discloses a numerical control machining center capable of clamping a special-shaped workpiece, comprising an operation table, a fixed backing plate is fixedly installed in the middle of the upper end of the operating table, and a side support plate is fixedly installed on the front and rear sides of the upper end of the fixed backing plate. The opposite ends of the two side braces are provided with two sliding rails, a moving mechanism is slidably connected in the sliding groove, and the front and rear ends of the moving mechanism are slidingly connected with the sliding rails, and an electric telescopic rod is fixedly installed in the fixed seat. And the electric telescopic rod is fixedly connected with the left end of the moving mechanism, a positioning mechanism is threadedly connected to the upper left side of the moving mechanism, a protective frame is detachably installed on the right side of the upper end of the operating table, and three lighting mechanisms are detachably installed on the right end of the protective frame. . The invention can fix the three contact surfaces of the special-shaped workpiece at the same time, has strong operation safety, has the lighting function, is convenient for observation, and is convenient for disassembly and installation.

The invention belongs to the field of molten steel refining, and in particular relates to a blowing calcium steam method and device for calcium treatment on molten steel. First, a calcium source is placed into a high temperature furnace outside a steel ladle, and heated to generate calcium steam. One end of the high temperature furnace is hermetically connected with a spray gun through a high temperature conveying pipeline, the spray gun inserts into a molten steel molten pool of the steel ladle, the other end of a high temperature furnace pipe is sealed by a flange, and an air inlet pipe is arranged on the flange. Inert gas is introduced into the high temperature furnace from the air inlet pipe to take the generated high temperature calcium steam out of the high temperature furnace, and is sent to the spray gun in the steel ladle by the high temperature conveying pipeline; and the high temperature calcium steam carried by the inert gas is blown into the ladle molten by the spray gun. The invention has the advantages of high yield of calcium, low treatment cost, high calcium treatment efficiency and the strong operation safety.

The invention discloses a synthetic method of 2,5-furan dimethanol and an etherified product of 2,5-furan dimethanol and relates to 2,5-furan dimethanol. The synthetic method comprises the following steps of: adding organic alcohol into a reaction substrate; putting the obtained mixture as a raw material in a high pressure reaction kettle; adding a certain amount of a molecular sieve supported catalyst; and performing a heating reaction to obtain 2,5-furan dimethanol and the etherified product of 2,5-furan dimethanol. By using alcohol as a hydrogen donor and a reaction substrate, no external hydrogen source does not needed. By adjusting the acid-base property of a catalyst through an active metal component, 2,5-furan dimethanol can be obtained by selectively catalyzing transfer hydrogenation of 5-hydroxymethylfurfural or 2,5-dialkoxyl methyl furan is obtained by further etherification. The catalyst is cheap and easily available and good in repeatability, no excessively hydrogenated product exists, and the whole reaction is hydrogenated in a hydrogen environment, and the synthetic method has relatively strong operating safety of industrial production and very good industrial application potential.

The invention discloses a tinting device for high-hardness and high-brightness gold jewelry, and particularly relates to the technical field of gold jewelry tinting. The tinting device comprises a quartz crucible and a quartz containing hopper, wherein mounting structures are arranged on the two sides of the top end of the quartz crucible, scales are arranged on the outer side of the quartz crucible, fixing frames are arranged on the two sides of the quartz crucible, a non-contact lifting structure is arranged at the top end of the fixing frame, and the quartz containing hopper is arranged above the quartz crucible. By arranging the quartz crucible, the scales, a liquid discharging hole and the quartz containing hopper, when a lifting rope is unreeled and the quartz containing hopper descends into the quartz crucible, a high-concentration sulfuric acid reagent is immersed into the surface of gold jewelry through the liquid discharging hole to soak and tint the gold jewelry, and after tinting is completed, the gold jewelry is slowly reeled along with the lifting rope, the sulfuric acid reagent leaks back into the quartz crucible from the liquid discharging hole, so that sulfuric acid can be prevented from splashing all around due to external shaking or other reasons when the quartz containing hopper is lifted, and the safety coefficient is increased.

The invention discloses a method for degrading acephate in a solution by electron beam irradiation. In the above-mentioned technical scheme disclosed by the invention, the method for degrading acephate in the prior art is improved simply by a single technology. Radiation degradation technology, pH adjustment, temperature control and different gas atmosphere synergistically enhance the degradation effect of acephate in the solution, and optimize the process parameters in the three treatment technologies, that is, by adjusting the pH value of the solution, the treatment The optimization of temperature, processing gas atmosphere, electron accelerator energy, beam current, beam power, irradiation dose and other process parameters significantly improved the degradation efficiency and depth of acephate in solution.

The invention discloses a method for synthesizing 5-methyl-2-pyrrolidone or derivatives thereof, which comprises the following steps: fully mixing levulinic acid (ester) with urea or amide and formic acid, and adding them into a high-pressure reaction kettle together with a catalyst After the reaction, the target product 5-methyl-2-pyrrolidone and its derivatives are obtained; after the reaction is completed, the catalyst is recovered by filtration, washed and dried, and reused. The method of the invention can realize high-efficiency conversion of levulinic acid (ester) in a solvent-free system, the cheap and environment-friendly urea or amide is used as the N source, and the biomass-based formic acid is used as the H source, and has good economy.

The numerical control machine tool machining center comprises an operation table, a fixed base plate is fixedly mounted in the middle of the upper end of the operation table, side supporting plates are fixedly mounted on the front side and the rear side of the upper end of the fixed base plate correspondingly, and two sliding rails are formed in the opposite ends of the two side supporting plates correspondingly; a moving mechanism is slidably connected into the sliding groove, the front end and the rear end of the moving mechanism are slidably connected with the sliding rails, an electric telescopic rod is fixedly installed in the fixing base and fixedly connected with the left end of the moving mechanism, and the left side of the upper end of the moving mechanism is in threaded connection with a positioning mechanism. A protection frame is detachably installed on the right side of the upper end of the operation table, and three lighting mechanisms are detachably installed at the right end of the protection frame. Three contact surfaces of a special-shaped workpiece can be fixed at the same time, the operation safety is high, the illumination function is achieved, observation is convenient, and dismounting and mounting are convenient.

The invention discloses a synthetic method of gamma-valerolactone. The synthetic method of gamma-valerolactone comprises the following steps of: (1) fully mixing methyl levulinate with an alcohol to obtain a mixed raw material liquid, wherein the concentration of the methyl levulinate in the mixed raw material liquid is 2-12wt%; and (2) adding a double metal catalyst into the mixed raw material liquid, heating the mixed raw material liquid in a high pressure reaction kettle to 170-290 DEG C to react for 0.5-9h, and cooling the mixture to room temperature to obtain gamma-valerolactone. By applying a copper-based double metal catalyst, the activity of the catalyst is adjusted by doping a second active metal, so that gamma-valerolactone can be prepared by catalytic in-situ hydrogen production by alcohol and selective catalytic hydrogenation of methyl levulinate.

The invention discloses a method for reducing crotonaldehyde in mainstream smoke of cigarettes, which includes: packing tobacco / finished cigarettes with paper cartons with a stacking thickness of 26-72cm and a stacking density of 0.20-0.34g / cm<3>; placing the cigarette cartons on a conveying device at the conveying speed of 0.02-0.3m / s, and subjecting the cartons to electronic beam / X-ray irradiation generated by an electronic accelerator, wherein the electronic accelerator is 5-10MeV in energy, 0.3-20mA in beam current, 10-20kW in beam power, 100cm in largest scanning width, 5-15Hz in scanning frequency, 1-10kGy in irradiation dose and 5-35 DEG C in set operating temperature; allowing the cartons to pass a scanning widow of the electronic accelerator twice for irradiation, wherein the distance from the center of each carton to the scanning window of the electronic accelerator is 40-60cm in irradiation; and limiting the ambient humidity to be no larger than 60% in operation.

The invention relates to the field of biological technology, in particular to a method for reducing the cyanide content of cassava dregs, which is characterized in that: mixing yeast and Mucor actinosa according to a volume ratio of 1-5:1-3 to obtain a mixed bacterial liquid, and then Mix 10-20mL of the mixed bacterial solution with 180-250g of cassava residue, and ferment at 25-31°C for 48-96h. The method is simple and easy to implement. The method of microbial degradation can not only greatly reduce the content of hydrocyanic acid, the rate of cyanide reduction can reach more than 80%, improve the safety of cassava residues as feed, but also decompose hydrocyanic acid and convert it into non-toxic Toxic organic matter becomes the nutrient of the feed and increases the economic benefits of the safe utilization of cassava residues.

The invention discloses a high-hardness, high-brightness gold jewelry hanging color device, specifically relates to the technical field of gold jewelry hanging color, comprising a quartz crucible and a quartz holding bucket, the two sides of the top of the quartz crucible are provided with installation structures, the quartz crucible Scales are provided on the outside of the crucible, fixed frames are provided on both sides of the quartz crucible, a non-contact lifting structure is provided on the top of the fixed frame, and a quartz holding bucket is provided above the quartz crucible. The present invention is equipped with a quartz crucible, a scale, a drain hole and a quartz holding bucket. When the hanging rope is unwound and the quartz holding bucket descends to the inside of the quartz crucible, the high-concentration sulfuric acid reagent is immersed into the surface of the gold jewelry through the drain hole. , Soak the gold jewelry for hanging color, after the hanging color is finished, with the slow winding of the hanging rope, the sulfuric acid reagent leaks back to the inside of the quartz crucible from the drain hole, which can prevent the outside from shaking or other problems when the quartz holding bucket is raised. The reason is that the sulfuric acid splashes around, which improves the safety factor.