119results about How to "Meet the national standard requirements" patented technology

The invention discloses a hydro-cracking method for blending ethylene bottom oil, which is different from the method for processing the conventional ethylene bottom oil and comprises the following steps: blending an ethylene bottom oil light end into a conventional hydro-cracking raw material for hydro-cracking, in the presence of hydrogen, sequentially contacting the ethylene bottom oil light end with a hydro-guard catalyst, a hydro-refining catalyst, a hydro-residue carbon removing catalyst and a hydro-cracking catalyst; separating an effluent of hydro-cracking reaction to obtain light fuel oil. The method of the invention adopts a method of grading the hydrogenation catalyst, can process the ethylene bottom oil light end and produce diesel oil having a high cetane number and a low condensation point and a naphtha having high arene, and is not obviously changed in a BMCI value of tail oil and a smoke point of a jet fuel when compared with the conditions before blending the ethylene bottom oil.

An energy-saving micro-resistance adjustable self-balancing check valve comprises a valve spool plate, a valve spool plate balance plate and a balance block, wherein the valve spool plate is mounted in a valve cavity through a rotary shaft, can be sealed with a valve inlet sealing ring and is rotatably opened and closed in the valve cavity, the valve spool plate balance plate is connected with a rotary shaft end of the valve spool plate and forms a certain angle with the valve spool plate, and the balance block is mounted on the valve spool plate balance plate. The energy-saving micro-resistance adjustable self-balancing check valve is characterized in that an obtuse angle larger than 90 degrees is formed by the valve spool plate balance plate and the valve spool plate of a horizontally mounted check valve, an acute angle smaller than 90 degrees is formed by the valve spool plate balance plate and the valve spool plate of a vertically mounted check valve, and a valve spool plate balance device comprises the valve spool plate balance plate and the balance block mounted on the valve spool plate balance plate and includes an adjustable type, a rolling-ball type, a swing type and a magnetic type.

The invention discloses a self-adjusting constant-micro-resistance check valve. The self-adjusting constant-micro-resistance check valve comprises a valve element plate, a valve element plate balance weight support, an upper balancing weight, a lower balancing weight, an inter-balancing-weight rotary shaft, a straight moving rail and an arc-shaped toothed rail, wherein the valve element plate is installed in a valve cavity through a rotary shaft and capable of in sealing with a valve inlet seal ring and can be opened and closed through rotation in the body of the valve cavity, the valve element plate balance weight support is connected with the end, provided with the rotary shaft, of the valve element plate, the upper balancing weight and the lower balancing weight are installed on the valve element plate balance weight support, the inter-balancing-weight rotary shaft is installed between the upper balancing weight and the lower balancing weight, the straight moving rail is installed on the lower side face of the upper balancing weight and is meshed with central teeth of the inter-balancing-weight rotary shaft, and the arc-shaped toothed rail is connected with end teeth of the inter-balancing-weight rotary shaft in a meshed mode. The self-adjusting constant-micro-resistance check valve is characterized in that an obtuse angle which is larger than 90 degrees is formed between the valve element plate balance weight support and the valve element plate when the check valve is installed horizontally, and an acute angle which is smaller than 90 degrees is formed between the valve element plate balance weight support and the valve element plate when the check valve is installed vertically; a valve element plate balance weight device is formed by the valve element plate balance weight support, the balancing weights installed on the valve element plate balance weight support, and a device which makes micro resistance be kept by the balancing weights when the valve element plate is opened by any degrees.

The invention discloses a wear-resistant rubber material combination of a tire tread and a preparation method thereof. The combination includes: natural rubber, styrene butadiene rubber, butadiene rubber, carbon black, zinc oxide, stearic acid, an anti-aging agent, sulfur, a distillate aromatic extract, a promoter, a reinforcing agent, a tackifier and a dispersing agent, wherein the distillate aromatic extract is a high aromatic hydrocarbon oil, the tackifier is C5 resin and the carbon black is N110 and N234. The combination also can comprise white carbon black. The combination is prepared through a plasticating process, a mixing process and an open mixing process and the like. A rubber material which is prepared from the wear-resistant rubber material combination of the tire tread and through the preparation method thereof has a better tearing strength, a better tensile strength and a better hardness. With the wear-resistant raw materials and a reasonable design of the combination components, hidden dangers on an operator during a production process and on a user during a using process are significantly reduced. The rubber material is higher in safety, is better in economy and is wider in adaptation. The wear-resistant rubber material combination of the tire tread is completely in conformity with related national and industrial requirements. Meanwhile, a usage performance of a tire is far higher than a usage standard requirement of a conventional tire in the prior art. The tire tread has characteristics of high wear resistance and excellent performance.

The invention relates to a double thread submerged arc welding technology that includes the following steps: selecting primary welding parameter: adopting double thread submerged arc welding method; selecting welding method according to leg height k; selecting welding thread diameter phi according to k, selecting 2mm B23K 9/18 B23K 9/095 B23K 35/04 0 3 2 2006/6/20 101092003 2007/12/26 000000000 Xidian Transformers Co., Ltd., Xi'an Xi-an 710077 Zhai Weidong You Yu xubeng 61211

The invention discloses a motorcycle tire tread rubber material with skid and wear resistance and a preparation method thereof. The rubber material comprises SSBR (solution polymerized styrene-butadiene rubber) 2564, butadiene styrene rubber, butadiene rubber, carbon black, zinc oxide, octadecanoic acid, an anti-aging agent, sulfur, aromatic hydrocarbon oil, an accelerant, a reinforcing agent, a thickening agent and a dispersing agent, wherein the aromatic hydrocarbon oil is high aromatic hydrocarbon oil, a silane coupling agent is further added, insoluble sulfur is adopted, and the rubber material is prepared through steps of plastication, mixing, open milling and the like. According to the tire tread material composition and the preparation method thereof, the obtained rubber material has better breaking strength, tensile strength and hardness; with the adoption of the raw materials with skid and wear resistance and through matching of reasonable composition design, the potential hazard to a processor and a user during production and use processes is greatly reduced, and safety, economic efficiency and adaptability of the product are wider; and with the adoption of the SSBR and the white carbon black, the slippery resistance of the tread rubber is remarkably improved, and meanwhile, the wear resistance is improved by means of the hard wear-resistant carbon black.

The invention relates to an apparatus and method for precisely detecting Bauschinger effect of repeated bending of a metal plate, the apparatus comprises a mechanics loading module and a plate clamping adjustable module fixed at the bottom of the mechanics loading module; the mechanics loading module is fixed and suspended through a testing machine and is vertically arranged, X-direction regulating blocks are symmetrically arranged at left side and right side along X-direction of the mechanics loading module, the front end and rear end of each X-direction regulating block are respectively fixed on the Y-direction regulating blocks, and is capable of respectively being driven by the Y-direction regulating blocks to horizontally slide on a pedestal along the Y-direction back and forth; the operation is easy and has automation function, force and displacement during a loading process can be measured, the coordinate figure, curvature radius and strain value at random point on both surface of the plate during the loading process can be measured, the error of test data is less, and the flexibility requirement of the Bauschinger effect for the plate can be satisfied, so that accurate calibration basis for determining material parameter of Bauschinger effect for the plate can be provided.

The invention discloses a baster-batch special for a buried polyethylene drainage pipeline. The baster-batch is prepared by the following steps of: mixing spheroid inorganic powder and needle flake-shaped inorganic powder according to a certain proportion to form composite inorganic powder; preheating, then adding a coupling agent and uniformly mixing; then adding a lubricant, a plasticizer, active monomer, an initiator, an antioxidant and a polyethylene carrier, highly mixing and discharging; and blending and extruding through double screws and pelletizing. When the filling masterbatch prepared by the invention is used for pipes of small and medium apertures, the weight of every meter of the pipe can be reduced by 5-7 percent. When the masterbatch is used for a large-aperture pipe, the amount of the added masterbatch can reach 40-50 percent; compared with other spheroid inorganic powder masterbatch filled pipelines of the same specification, the modulus can be improved by about 30 percent; and compared with other needle flake-shaped inorganic powder masterbatch filled pipelines of the same specification, the impact property can be improved greatly.

The invention discloses an internally-adjusted constant-micro-resistance check valve. The check valve comprises a valve plate which is arranged in a valve body in a connecting manner through a valve plate revolving shaft and a valve plate connecting block and can be sealed together with a sealing ring at the inlet of the valve plate and rotationally opened and closed in the valve body, and a valve plate counterweight device connected with one side, which is far away from the valve plate, of the valve plate connecting block, wherein the valve plate revolving shaft is arranged in the center of a valve plate connecting block between the valve plate counterweight device and the valve plate. The check valve is characterized in that the valve plate counterweight device of the horizontally-arranged check valve has five types of structures, namely, a structure A in which the section of the vertical valve plate surface of the valve plate counterweight device is in the form of an asymmetric sector, a structure B in which the valve plate counterweight device consists of a main balance block and a secondary balance block, a structure C in which the valve plate counterweight device consists of an arc-shaped slipway and a gravity block, a structure D in which the section of the vertical valve plate surface of the valve plate counterweight device is in the form of a banana arc, and a structure E in which the valve plate counterweight device consists of a fixed balance block and a movable balance block.

The invention discloses a fruit and vegetable type beverage prepared through compound lactobacillus fermentation and a preparing method of the fruit and vegetable type beverage. The fruit and vegetable type beverage is prepared from apple and yam juice (obtained through compound lactobacillus fermentation), CMC (carboxymethyl cellulose), sodium alginate, xanthan gum, saccharose, citric acid and beta-cyclodextrine; the addition quantity of the CMC is 0.12 to 0.18 weight percent of the apple and yam juice; the addition quantity of the xanthan gum is 0.13 to 0.18 weight percent of the apple and yam juice; the addition quantity of the saccharose is 5 to 6.5 weight percent of the apple and yam juice; the addition quantity of the citric acid is 0.02 to 0.05 weight percent of the apple and yam juice; the addition quantity of the beta-cyclodextrine is 0.1 to 0.2 weight percent of the apple and yam juice. The fruit and vegetable type beverage has the advantages that sense, physicochemical and microorganism indexes conform to national standard requirements, the product of the fruit and vegetable type beverage has the apple and yam juice flavor, is full-bodied pleasant and is the uniform and consistent cream yellow, and the tissue state is exquisite.

The invention discloses a steelmaking process capable of improving the quality of a U71Mn heavy rail steel product, and belongs to the technical field of steelmaking processes. The steelmaking process comprises the process steps of molten iron desulfurization, converter smelting, LF refining, RH refining and special-shaped blank continuous casting, and is characterized in that a deep desulfurization mode is adopted for the molten iron desulfurization, wherein the desulfurization time is 30-40 min; and after the treatment, S is not more than 0.005% (mass fraction), [P] is not more than 0.120% (mass fraction), and T is not lower than 1250 DEG C. As the steelmaking process is adjusted and controlled according to the invention, the defects of center segregation, center porosity and center hole shrinkage of heavy rail steel cast blanks are prominently alleviated; the crack low-power defect of the cast blanks is effectively prevented; and the surface defectless rate of the heavy rail steel continuous cast blanks reaches 100%. The rolled heavy rail steel low-power structure prevents white dots, shrinkage residues, internal cracks, skull patches, delamination and inclusion visible to the naked eyes; the steel rail tensile strength is averagely higher than or equal to 900 MPa; and the steel rail tread hardness is higher than or equal to 260 HB.

The invention discloses a manufacturing method of short cycle wear-resistant decorative paper. The method comprises the steps of selection and pre-treatment of raw paper; uncoiling; pre-wetting; impregnation; first time drying press-sticking; preparation of coating glue; second time drying press-sticking; deviation adjustment traction, and cutting; the quality of the short cycle wear-resistant decorative paper manufactured with the method is high, the curing time is shortened, the production efficiency is improved, the uniformity of impregnation and gluing of the short cycle wear-resistant decorative paper is guaranteed in the manufacturing process, the flexibility of a glue layer and the sealing performance of the surface of the glue layer are guaranteed, and accordingly, the problems that the quality of the short cycle wear-resistant decorative paper is not high and the efficiency is low are fundamentally solved.

The invention provides a set of device for controlling ozonization byproduct bromate in packaged drinking water, wherein the device is capable of effectively controlling bromate in the packaged drinking water specific to different water qualities and different production capacities, and is used for overcoming the defect that the ozonization byproduct bromate cannot be effectively controlled during the production of the packaged drinking water in the prior art. The device consists of a frame, a UV (Ultraviolet) radiation device and a multipoint ozone dosing device. The device is innovatively characterized in that: multipoint ozone dosage is taken as a core, drinking water is treated by using a bromate control device which integrates UV and an ozone dosing technology, and the ozonization byproduct bromate produced in the water treatment process of bromide-containing raw water is controlled to be less than 10 mug/L while microorganism pollution in the drinking water is effectively controlled, so that finished water meets the Chinese standard requirement; and the device for controlling the ozonization byproduct bromate in the packaged drinking water is economical and practical.

The invention provides a degradable composite surgical suture, wherein the surgical suture is prepared by a method comprising the following steps: S1, adding chitin and graphene oxide to dispersion liquid, so that a saturated solution is formed; freezing and thawing the saturated solution at low temperature, performing uniform stirring after melting, so that a mixed solution is obtained; S2, adding epoxy chloropropane, which serves as a cross-linking agent, to the mixed solution obtained in the step S1, conducting stirring and standing, so that a cross-linked product is obtained; S3, purifying the cross-linked product obtained in the step S2, dissolving the cross-linked product in formic acid, so that a spinning collagen solution is prepared, and spinning and shaping the spinning collagen solution; and S4, soaking a shaped product obtained in the step S3 in a nano silver solution, performing drawing and drying, and disinfecting, so that the surgical suture is obtained. The suture prepared by the invention can solve the problem of existing chitosan polysaccharide sutures which are relatively weak in mechanical strength; the surgical suture is relatively good in mechanical performance; and meanwhile, the surgical suture is capable of satisfying a suturing demand under an in vivo polar environment.

The invention discloses a circulating water phosphorus-free corrosion and scale inhibitor and a preparation method thereof, and belongs to the technical field of water treatment agent preparation. Thecorrosion and scale inhibitor comprises the following components in parts by weight: 10-20 parts of polyepoxysuccinic acid or polyaspartic acid, 10-35 parts of sodium gluconate, 10-20 parts of acrylic acid-2-acrylamide-2-methyl propane sulfonic acid copolymer, 5-10 parts of zinc salt, 3-15 parts of molybdate, 1-3 parts of a copper corrosion inhibitor, 1-2 parts of a fluorescent tracer, 1-2 partsof a pH regulator, 5-10 parts of isothiazolinone and the balance of water. The phosphorus-free corrosion and scale inhibitor has the advantages of high corrosion inhibition rate, high scale inhibitionrate, low cost, no phosphorus, wide scale inhibition spectrum, wide pH application range, sterilization and slime stripping effects, low toxicity, chloride resistance, simple operation, controllablecirculating water agent concentration, safety and high efficiency, and belongs to an environment-friendly corrosion and scale inhibitor.

The invention relates to the preparation of gelatin, in particular to a method for preparing bovine skin gelatin by enzyme treatment, which comprises the process steps of raw material pretreatment, enzymolysis reaction, enzyme passivation, glue extraction, separation, concentration, drying and the like. The method solves the technical problems of low gelatin conversion rate, high post-treatment cost caused by pollution and the like in the prior art. The method has the advantages of high gelatin conversion rate, clean and environment-friendly approach, and that the indexes of the prepared gelatin meet the requirements of national standards.

The invention relates to a winder mounting device for strength testing. The winder mounting device is characterized by comprising a connecting plate (1), a bottom plate (2), a fixing hole mounting support (3), a fixing hole mounting plate (4), two locating hole mounting supports (5) and a locating hole mounting plate (6); the fixing hole mounting support (3) is connected with the bottom plate (2) through a plurality of first bolts (7); the bottom plate (2) is connected with a tensile machine through the connecting plate (1); the fixing hole mounting plate (4) is arranged on the fixing hole mounting support (3) to fix fixing holes (91) of a winder (9); the two locating hole mounting supports (5) are arranged at the left end and the right end of the fixing hole mounting support (3) correspondingly; the locating hole mounting plate (6) transversely strides the two locating hole mounting supports (5) to fix a locating hole (92) of the winder (9). As the winder mounting device is high in universality and convenient to use, the testing efficiency is improved, the testing cost is lowered, and the workload and work intensity of working staff are reduced.

The embodiment of the invention discloses a multi-functional digital partial discharge detector calibrator. The multi-functional digital partial discharge detector calibrator comprises a memory for caching output signals, a numerical control pulse signal generation module for generating controllable pulse signals, a power frequency synchronous triggering module for generating amplitude-controllable power frequency synchronous signals, a digital-to-analogue conversion unit for converting digital data to an analog wave form, an amplitude control unit for controlling the pulse signals and the power frequency synchronous signal amplitude, a control interface, a pulse output port and a power frequency synchronous port, wherein the control interface, the pulse output port and the power frequency synchronous port are arranged in an external hooking mode. The multi-functional digital partial discharge detector calibrator is various in functions and can replace a plurality of detectors to finish the calibration of the partial discharge detector, a digital mode is adopted to arrange various parameters of the pulse signals, the signal output is accurate, test experiments of multiple parameters of the partial discharge detector can be completed through a user interface, and the multi-functional digital partial discharge detector calibrator is convenient to operate.

The invention provides a formaldehyde adsorbing type parquet plywood base material preparation method, according to the method, the production technology is simple, the cost of added materials is low,and a plywood base material prepared through the method can remove formaldehyde through the adsorbing function of the plywood base material, is high in removing efficiency, and can continuously and effectively remove the formaldehyde for a long time. According to the preparation method, wood veneer is processed for 30-90 min at the temperature of 160-200 DEG C and then subjected to glue smearing,blank assembling and prepressing, and a parquet plywood base material is produced through hot pressing forming; during glue smearing, glue smeared on the veneer is a modified urea-formaldehyde resinadhesive containing a chemical formaldehyde adsorbing material; and the modified urea-formaldehyde resin adhesive is prepared through the steps that urea-formaldehyde resin, flour and ammonium chloride are uniformly stirred according to the mass ratio of being 100:10:1, then, amino chitosan with the mass percent being 1.9-7.6% and imidazolidone, or a mixture of the amino chitosan with the mass percent being 1.9-7.6% and the imidazolidone with the ratio being 1:1 are added, and uniform stirring is conducted.

The invention relates to a method for accelerating dry red wine ageing by an instantaneous ultra-high pressure homogenization technology. The method is characterized by including subjecting newly brewed dry red wine to instantaneous high-pressure treatment via an ultra-high pressure homogenizer, wherein the pressure is 100-200 MPa, cycling treatment is conducted for 1-3 times, treatment speed is 4-6 L/h, and wine liquid temperature is between 5 DEG C and 20 DEG C. The method is capable of accelerating esterification in wine, improving the wine aroma quality and accelerating an ageing process and maintains the wine body color quality.

The invention discloses a system and method for neutralizing and recovering aluminum hydroxide and sodium sulfate from an oxidation solution and a mold alkaline-water soaking solution. The system sequentially comprises a mold alkaline-water soaking solution generation system, an oxidation solution collection system, a mold alkaline-water soaking solution addition system, a reaction solution separation system, a primary filtrate collection system, a primary filtrate recovery system, a sodium sulfate recovery system and a secondary filtrate collection system. The online recovery treatment of thealkaline-water soaking solution accounting for 28% of the total slag amount of waste slags generated by aluminum extrusion enterprises and the oxidation solution accounting for 27% of the total slagamount is involved, the oxidation waste solution is utilized as a reaction solution, and the mold alkaline-water soaking solution or other alkaline solutions containing sodium metaaluminate and sodiumhydroxide are added, wherein other alkaline solutions include the oxidation line alkaline-etching solution without an alkaline-etching agent, the alkaline dissolution solution of aluminum ash and thelike, R is greater than or equal to 3.5, and the pH is between 7.00 and 7.50; by-products of aluminum hydroxide and sodium sulfate are recovered to achieve zero discharge of mold alkaline-water soaking wastewater and waste slags, and the contamination of sodium ions to the center of the wastewater is completely blocked.

The invention discloses a steel and iron blackening agent. The steel and iron blackening agent comprises a pretreatment solution and a blackening solution, wherein the pretreatment solution is prepared from the following raw materials in parts by weight: 3-4 parts of Na2S, 3-5 parts of NH4H2PO4 and 1000 parts of water; the surface conditioning time of the pretreatment solution is 1-2min; the blackening solution is prepared from the following raw materials in parts by weight: 3-5 parts of copper sulfate, 1-2 parts of ammonium molybdate, 1-2 parts of nickel nitrate, 15-20 parts of manganese dihydrogen phosphate, 2-3 parts of citric acid triamine, 0.5-1 part of OP-10 and 1000 parts of water; and the using temperature of the blackening solution is 20-30 DEG C and the blackening time is 5-10min. A black film obtained by blackening with the steel and iron blackening agent disclosed by the invention is fully in line with the requirements of national standard, the luster and the corrosion resistance of the film are also greatly improved, the formula is sequentially actually tried in Valin Steel and Tyen Machinery, and great effects are obtained.