102results about How to "Compliant with usage standards" patented technology

This invention relates to PVC elastomer formula for flame retarding mine use sofe cable and its processing technique. The formula includes the following contents(weight share): high polymerized PVC 100, low polymerized PVC 10-50, the plasticizer 60-120, tri-salt lead sulfate 2-5, disalt lead phosphate 2-5, disalt lead stearate 0.5-1.5 barium stearate 0.5-1.0, inflaming retarding agent 10-20, assistant retarding agent 2-7, antioxidant 0.1-1.0, bulking agent 10-30. The processing technique is as follows: match every group according to weight ratio and then past them; knead the pasting and powder under 90-110deg.C for 4-10 minutes, plasticize the kneaded mixture and particlize the processed rubber material and storage them. The elasticity of PVC of this invention can arrive the elasticity of rubber, and its electrical performance, hot endurance, inflaming retarding performance and tensile and breaking elongation are up to the standards.

The invention discloses a method for laser additive manufacturing of a 12CrNi2 alloy steel material. The method comprises the laser direct deposition forming step of adopting a semiconductor laser device for depositing 12CrNi2 alloy steel powder onto a substrate material. According to the method, the 12CrNi2 alloy steel powder is selected, a laser direct deposition forming technical process is optimized, the alloy steel material free of defects such as cracks is prepared, and the material is high in hardness and has good toughness. According to the method, a nuclear power emergency diesel generator crankshaft can be integrally prepared; the technological process is short, the subsequent allowance for machining is small, and the material utilization rate is high; and the problems that in the process of producing the nuclear power emergency diesel generator crankshaft through a traditional forging method, the technological process is complex, the period is long, and the cutting quantity is large are solved. According to the method, the mechanical property of the12CrNi2 alloy steel material can be improved, and the production cost of a forging and pressing mold and the like can be reduced.

The invention discloses a liver and body strengthening agent for Litopenaeus vannamei. The liver and body strengthening agent for Litopenaeus vannamei provided by the invention comprises the following nutrient components, by weight: 10-25 parts of crude protein, 6-10 parts of crude fat, 15-35% of total sugar, 5-30 parts of crude fiber and 7-15% of water. The liver and body strengthening agent for Litopenaeus vannamei provided by the invention can effectively reduce liver load and damage on the liver caused by the external factors, and promote normal function restoration of the Litopenaeus vannamei, in order to realize effects of improving resistance, survival rate and increasing economic benefits for the farmers.

The invention discloses a production process for a large-section aluminum alloy radiating fin. The process comprises the following steps component optimization; pouring and blank making; extrusion molding; quenching; stretcher straightening; and aging treatment. After optimization, an aluminum alloy comprises, by mass, 0.30 to 0.40% of Si, 0.18 to 0.22% of Fe, 0.03 to 0.05% of Cu, 0.03 to 0.05% of Mn, 0.48 to 0.58% of Mg, 0.03 to 0.05% of Cr, 0.03 to 0.05% of Zn and 0.04 to 0.06% of Ti, with the balance being Al. In the step of extrusion molding, an extrusion speed is 0.8 to 1.8 mmin, cast bar temperature is 510 +- 15 DEG C, die temperature is 500 +- 15 DEG C, and the temperature of an extrusion container is 450 +- 15 DEG C. The production process for the large-section aluminum alloy radiating fin can produce qualified radiating fins with a large section size of more than 450 mm.

The invention discloses a communication device, a horn and an antenna assembly thereof. The horn and the antenna assembly comprise a small tone cavity; the tone cavity comprises an insulation bracket serving as a cavity, a horn arranged in the tone cavity and a first antenna radiator positioned on the insulation bracket, wherein the horn comprises an upper voice frequency metal cover serving as asecond radiator of the antenna, the load point of the first radiator is used for connecting a disjunctive feeding point and an earth feeding point to form a PIFA antenna form, and a first coupling slot is arranged between the first radiator and the second radiator. The invention can enable the antenna to have the characteristics of super-small volume, high radiation, multiple frequency band and super-wide frequency band and turns the waste into the valuable.

The invention discloses an artificial steel slag aggregate and a preparation method and application thereof. The preparation method comprises the following steps: step 1, grinding steelmaking tailingsby using a ball mill to obtain uniform steel slag powder; 2, weighing Portland cement, an admixture fine powder and steel slag powder, and conducting uniform mixing to obtain an aggregate raw material; 3, preparing an additive aqueous solution; 4, putting the aggregate raw material into a ball forming mill, and uniformly spraying the additive aqueous solution prepared in the step 3 to form balls,so as to obtain spherical artificial steel slag aggregate; step 5, putting the pelletized aggregate into a closed environment or a natural environment for pre-curing; and step 6, putting the pre-cured aggregate into a carbonization device for carbonization treatment to finally prepare the artificial steel slag aggregate. The artificial steel slag aggregate prepared by the method can achieve the goals of safety and high strength, the crushing index of the aggregate can reach 9.26% and reach the I-grade aggregate use standard, the production process is simple, the solid waste is recycled, the carbon dioxide is absorbed and cured, and the artificial steel slag aggregate is free of burning, low-carbon and environment-friendly.

The invention discloses a method for detecting concrete slump through sound waves. Stress waves are applied to the surface of a to-be-measured position of a concrete mixture; according to an originalecho signal received by a sensor, the change trend of the wave velocity v over time is obtained, the relation between the wave velocity v and the slump SL is obtained by combining the change trend ofthe slump SL over time and the change trend of the wave velocity v over time, and the value of the slump SL is obtained by detecting the wave velocity v in the detection process. According to the method for detecting the slump concrete through the sound waves, the change of the concrete slump over time is reflected through the wave velocity, the working intensity of workers is effectively reduced,the personnel allocation amount is reduced, the complex working process is reduced, and the measurement accuracy is improved.

The invention provides modified asphalt and a preparation method thereof, and belongs to the field of highway building materials. The modified asphalt is prepared from, by mass, 90-94 parts of matrixasphalt, 1-5 parts of SBS 4303, 1-2 parts of SBS LG501, 1-2 parts of a compatilizer, 0.5-1 part of an extending agent and 0.1-0.3 part of a stabilizer. According to the data of the embodiment, the modified asphalt has the good performance and meets the specified standard.

The invention discloses a yak meat tenderizing and color-improving technology. The yak meat tenderizing and color-improving technology comprises the following steps: (1) shaping yak meat chunks, namely shaping acid-excreted mature yak meat chucks, and removing connective tissues such as sinews and tendons; (2) injecting tenderizing liquid, namely preparing tenderizing liquid, and uniformly injecting the tenderizing liquid into the yak meat chunks to be treated by using rowed syringe needles; (3) carrying out rolling-massage, namely performing rolling-massage on the yak meat chunks injected with the tenderizing liquid in a rolling machine so as to have the fiber of the yak meat infiltrated with the tenderizing liquid, and carrying out full reaction; (4) carrying out cutting and packaging, namely cutting the yak meat chunks after rolling-massage into pieces, and carrying out vacuum packaging; and (5) carrying out liquid high-hydrostatic-pressure treatment, namely performing liquid high-hydrostatic-pressure treatment on the vacuum-packaged yak meat so as to improve meat texture, and completing the tenderizing and color-improving processes. The yak meat tenderizing and color-improvingtechnology is capable of achieving the goal of tenderizing yak meat under the premise of preserving original color and luster of the yak meat; moreover, the yak meat tenderizing and color-improving technology is simple in processes, obvious in effects, low in processing cost, and significant in economic benefits.

The invention discloses a formula of rubber for a valve seat. The rubber comprises the following components in percentage by weight: 56 to 62 percent of ethylene-propylene-diene mischpolymere rubber, 23 to 26 percent of carbon black, 6 to 10 percent of metallic compound, 0.5 to 3 percent of anti-aging agent and 3.5 to 5 percent of peroxide. The invention also discloses a preparation method for the rubber in the formula and a valve seat product. A main raw material is the ethylene-propylene-diene mischpolymere rubber which is terpolymer of ethylene, propylene and non-conjugated dialkene, has the main characteristics of excellent antioxidation, ozone resistance and corrosion resistance and good vulcanization characteristic, and can absorb massive fillers and oil but the characteristics are influenced hardly. The antibacterial, micro-poisonous and low-dissolution metal rubber can be applied to life industries abroad and at home to improve food safety.

The invention discloses a drop aeration and anaerobic treatment integrated sewage treatment device. The drop aeration and anaerobic treatment integrated sewage treatment device comprises a reservoir, a sewage treatment unit and an acceptance pool, wherein a drop aeration ditch is arranged in the sewage treatment unit, a water inlet is formed between the reservoir and the sewage treatment unit and connected with a movable door, and a lever start and stop mechanism is connected onto the movable door; a solar panel and a blowing fan are arranged on the upper surface of the sewage treatment unit, and a water outlet and a sludge outlet are formed between the sewage treatment unit and the acceptance pool; the acceptance pool comprises a purified water collection tank and a sludge collection tank, and a collection port is formed in the sludge collection tank which is connected with the sludge outlet; a comparison tank is arranged in the purified water collection tank, a circulating pipe is connected onto the purified water collection tank, one end of the circulating pipe is connected with the sewage treatment unit, and a water suction pump is arranged on the circulating pipe. According to the drop aeration and anaerobic treatment integrated sewage treatment device, a drop aeration device is taken as a prototype, anaerobic reaction is added, a drop aeration and anaerobic treatment integrated effect is realized, and the cost and occupied space are saved greatly.

The invention provides cosmetic bristle, a preparation method of the cosmetic bristle and a cosmetic brush. The cosmetic bristle provided by the invention is prepared from raw materials containing aningredient A and an ingredient B; through being metered in percentage by mass, the ingredient A is prepared from 50 to 60 percent of polylactic acid, 20 to 30 percent of nylon and 20 to 30 percent ofpolybutylene terephthalate; through being metered by the mass ratio of all gradients in the ingredient B in the ingredient A, the ingredient B is prepared from 2 to 3 percent of plasticizers, 5 to 10percent of stabilizing agents, 5 to 10 percent of oxidizing agents, 3 to 8 percent of fixed filling materials and 3 to 10 percent of fillers. The cosmetic bristle provided by the invention is preparedfrom the specific ingredient raw materials in the proportion; the polylactic acid, the nylon and the polybutylene terephthalate are matched; under the synergistic effect of the plasticizers, stabilizing agents, oxidizing agents, fixed filling materials and fillers, the cosmetic bristle has excellent degradability; meanwhile, good flexibility and abrasion performance are realized.

The invention discloses a straightening and repairing device for a long cabinet door of ecological and environment-friendly customized furniture. The device comprises a straightening and repairing box, the lower half portion of the straightening and repairing box is located in a clamping groove of a horizontal support, a side door is movably arranged on the front end face of the straightening and repairing box, the side door is fixed to an opening of the front end face of the straightening and repairing box through a plug pin, straightening air bag combinations are arranged on the two side walls of the interior of the straightening and repairing box correspondingly, and buffer layers are arranged on the front inner wall and the rear inner wall of the straightening and repairing box and the inner sides of side doors correspondingly. According to the straightening and repairing device, the air bag combinations are used for replacing traditional mechanical strong pressure, the material strength of the air bags is low, damage to wood in the punching process is extremely small, the instantaneous pressure and repeated operation of pulses are utilized, mechanical acting force can be effectively replaced, the straightening effect of the cabinet door is improved, and the working noise is also reduced, the device is suitable for different working conditions, and better use prospects are brought.

The invention discloses an aerosol valve with a one-key stirring mechanism. The aerosol valve comprises an aerosol valve body. The aerosol valve body comprises a valve main body, a valve element, a reset mechanism and a suction pipe, wherein the valve element is movably arranged in the valve main body, the reset mechanism is arranged in the valve main body to reset the valve element, the valve element is connected with the reset mechanism, the suction pipe is connected with the valve element, a push rod is fixedly connected to the valve element, the suction pipe is sleeved with a sleeve body capable of moving up and down, a connecting frame body is fixedly arranged between the sleeve body and the push rod, and a plurality of rotating blades are arranged on the sleeve body. According to theaerosol valve, the defects existing in an existing aerosol valve are overcome, for mixed liquid, in the process that a spraying button is pressed down, the stirring mechanism can be driven to stir the mixed liquid, so that the liquid better meets the use standard, the appearing of sediment at the bottom is prevented, the consistency of spray components and expectation is guaranteed, then the purpose of use is achieved, in addition, the stirring is convenient and uniform, and the mixing effect is good.

The invention provides a method for finely purifying caspofungin, which comprises the following steps: by using monodisperse polymer 30BPC microspheres as a column chromatography filler, loading a caspofungin crude product solution onto the chromatographic column, eluting caspofungin adsorbed onto the filler by using a water solution and an organic solvent as mobile phases, and collecting the caspofungin-rich solution. By using the method, the caspofungin purity can reach 99% above, and the single-component impurity can be controlled at 0.1% below. The method has the advantages of simple process and high purification efficiency, and is suitable for large-scale industrial production.

The invention relates to the technical field of camellia oleifera fruits, and discloses a device capable of automatically feeding and discharging camellia oleifera fruits during drying based on gravity changes. The device comprises an outer shell, wherein an inner shell is movably connected to the interior of the outer shell, and the inner shell and the outer shell are independently separated for control. Through cooperative use of a heating block, a feeding pipe, upper baffles and lower baffles, the camellia oleifera fruits are heated and dried under the action of the heating block after entering from the feeding pipe, the weight is reduced after drying, accordingly, the lower baffles are automatically opened, the dried camellia oleifera fruits can be automatically discharged, and automatic feeding is performed for circulation after discharging is finished, so that the whole device is higher in automation degree, workers do not need to watch aside, and labor force is reduced; and a vertical rod moves upwards or downwards through the weight change of the camellia oleifera fruits, a transverse rod is driven to rotate to achieve the purpose of automatic discharging, other external energy sources are not needed, and the whole device is more energy-saving and environmentally friendly.

The invention belongs to the technical field of building construction, particularly relates to a sand screening device for building construction and an application method thereof. Aiming at solving the technical problems that an existing sand screening device is simple in design structure, sand grains easily block sand screening holes in the screening process, and accordingly the sand screening production efficiency is affected, the invention provides the following scheme that the sand screening device for building construction comprises a base, wherein a shell with a hollow structure is arranged on the outer wall of the top of the base; mounting blocks are arranged on the outer walls of the two sides of the shell; grooves are formed in the outer walls of the tops of the mounting blocks; vibration springs are arranged on the inner walls of the grooves; a sand screening plate is arranged at the ends, away from the grooves, of the vibration springs; sand screening holes distributed at equal intervals are formed in the outer wall of the top of the sand screening plate; the section of each sand screening hole is of an isosceles trapezoid structure; and a rubber layer is arranged on the inner wall of each sand screening hole. According to the sand screening device for building construction and the application method thereof provided by the invention, the condition that dredging heads expand the sand screening holes is avoided, the service life of the sand screening plate is prolonged, blockage is not prone to being caused, and the sand screening efficiency is remarkably improved.

The invention belongs to the technical field of polishing powder preparation, and particularly relates to a preparation method of lanthanum-cerium modified magnesium oxide composite polishing powder.The preparation method comprises the following steps: S1, precipitating a mixed solution of magnesium chloride and lanthanum-cerium chloride by taking a fluorine-containing strong alkali solution as aprecipitant, ageing, and filtering to obtain a fluorinated magnesium hydroxide lanthanum cerium eutectic compound; and S2, drying, roasting, screening, crushing and grading the precipitate obtained in the step S1 to obtain the lanthanum-cerium modified magnesium oxide composite polishing powder. The granularity of the polishing powder is 0.8-1.2 [mu]m, the polishing powder meets the use standard(0.6-1.2 [mu]m) in the fields of mobile phone cover plates and TFT liquid crystal panel glass, and after the provided polishing powder replaces the existing polishing powder, the rare earth resource is saved by more than 9000 tons/month.