68results about How to "Ensure the quality is qualified" patented technology

A method for extracting and refining rutin comprises the following steps of (1) extraction: smashing raw materials, adding organic solvent into the smashed raw materials, performing extraction for 2-4 times, mixing extracting solution and concentrating the mixed extracting solution to thick extract with organic solvent content smaller than or equal to 5wt%; (2) alkali dissolution-acid sediment: adding alkaline water into the thick extract, then heating the mixture and stirring, filtering the heated mixture, regulating pH of alkaline filtrate to be 3-4, standing, filtering, drying to obtain a rutin pure product; and (3) mother liquor treatment: enabling obtained acid mother liquor to penetrate through a chromatographic column filled with resin, after the acid mother liquor penetrates through the chromatographic column, firstly using deionized water to wash a column bed until outflow liquid is neutral and colorless, introducing eluent into the chromatographic column and collecting eluate until outflow liquid is colorless, concentrating the eluate to the volume which is 5-10% of the original volume in a pressure reduction mode, cooling the concentrated eluate to achieve crystallization, filtering, using the deionized water to elute a filter cake, and drying the eluted filter cake to obtain a mother liquor rutin product. The prepared rutin is high in yield and purity, and the quality of the rutin reaches the international standard.

The production process can produce double wall corrugated pipe of hard polyvinyl chloride and in the caliber up to 800 mm and the corrugated pipe is used for conveying liquid or solid material and protecting under ground wires. The production process includes the following steps: preparing materials including PVC resin, composite stabilizer, stearic acid, PE wax, chlorinated polyethylene and calcium carbonate; kneading the materials in a high speed kneading machine for 12-16 min, stirring in low speed cold mixer at 115-125 deg.c, extruding in a double screw extruder at 90-210 deg.c, setting and drawing in a blowing and sucking molding formation machine, cutting and flaring.

The invention relates to a zero-discharge treatment method for salt-containing coal-chemical wastewater. The method comprises the following steps: (1) pretreatment; (2) reverse osmosis treatment; (3)advanced oxidation; (4) biochemical treatment; (5) electrodialytic concentration; and (6) cyclic crystallization. Compared with the prior art, the zero-discharge treatment method for salt-containing wastewater provided by the invention achieves zero discharge or almost zero discharge of coal chemical wastewater, improves the recovery rate of salt, can recover high-quality sodium sulfate, mirabilite and sodium chloride and realizes recycling of crystalline salt; a membrane treatment unit is stable in process, long in operation cycle and low in cost; and the method has good economical performance.

The invention relates to a method for rapidly eliminating acid phosphate hide-out of a coke dry quenching waste heat boiler. The pH value of feed water of the boiler is controlled, after the acid phosphate hide-out phenomenon occurs, the pH value of the feed water is required to be controlled at an upper limit value 9.2; and an automatic secondary ammonia adding is increased for a complete condensation unit, when the pH value of the feed water is lower than 8.8, an ammonia adding pump is started to ensure that the pH value of the feed water is qualified; and if the pH value is lower continuously, guaranteed sodium hydroxide is added. The method disclosed by the invention has the advantages of eliminating the acid phosphate hide-out phenomenon, keeping the pH value of boiler water at 9.2-10.8, ensuring that the quality of steam water of the boiler is qualified, preventing scale formation of the boiler, ensuring long-term safe and stable operation of the boiler, preventing performing acid washing on the boiler in advance due to scale formation caused by the acid phosphate hide-out phenomenon during the operation of the coke dry quenching waste heat boiler and avoiding the occurrence of coke dry quenching pipe explosion phenomenon caused by scale formation.

The invention provides a degassing and deslagging device for aluminum liquid. The degassing and deslagging device comprises a gas storage bottle and a storage tank, wherein gas for the degassing and deslagging of the aluminum liquid is stored in the gas storage bottle. The degassing and deslagging device is characterized in that: a deslagging agent is sealed in the storage tank; a gas pipeline is arranged between the gas storage bottle and the storage tank, the gas in the gas storage bottle is introduced into the storage tank by the gas pipeline in the controlled state; a discharging pipe is arranged at the lower end of the storage tank; a heat-resisting pipe is connected to the back of the discharging pipe; a branch pipeline is arranged on the gas pipeline; and the other end of the branch pipeline is connected to the discharging pipe or is connected to the heat-resisting pipe. According to the degassing and deslagging device, the deslagging agent is blown into the bottom of the aluminum liquid by nitrogen, inertia nitrogen and the deslagging agent of which the specific gravity is smaller than that of the aluminum liquid are floated upwards automatically to carry away hydrogen and impurities in the aluminum liquid, so that gas content in the aluminum liquid is reduced effectively and the impurities in the aluminum liquid are removed effectively, and the quality conformance of the aluminum liquid is ensured; and the deslagging agent is driven by the gas to be diffused in the aluminum liquid, so that the deslagging agent can be distributed at the bottom of the aluminum liquid uniformly, and the integral degassing and deslagging effect is good.

The invention belongs to the technical field of production of heating-free direct rolling of square and round billets, and relates to a control system for producing directly rolled casting billets anda control method thereof. The device comprises a casting billet shearing system, a sheared roller way, a conveying roller way, a billet discharging roller way, a converging roller way, a casting billet transverse moving device, a casting billet temperature measuring device, a control system, a secondary cooling water pipeline, a flow regulating valve and a nozzle. According to the control systemand the control method, whether the temperature of the casting billets meets the requirement of direct rolling on the temperature of the casting billets can be judged in time, and when the temperatureof the casting billets meets the requirement, a roller way is started to rapidly send the casting billets to steel rolling for rolling; when the temperature of the casting billets cannot meet the requirement of the direct rolling temperature, back-zone equipment is started, the casting billets are hoisted to be offline, and the secondary cooling water amount is adjusted according to factors suchas the measured temperature, the secondary cooling water inlet temperature, the molten steel superheat degree, and the historical effective casting speed of the casting billets in the secondary cooling spraying section to adjust the temperature of the casting billets to meet the requirement of the direct rolling.

The invention discloses a vibration feeding sterile capsule screening machine which comprises a feeding device, a dust removal device, a lifting mechanism and a screening device. The feeding device comprises a machine body, a supporting rod, a feeding box, a mesh screen, a discharge plate and a discharge disc, a control box is arranged in the machine body, the supporting rod is arranged on the machine body, the feeding box, the mesh screen and the discharge plate are arranged on the supporting rod, a vibration motor is arranged on the mesh screen and is connected with the control box, the mesh screen is connected with the discharge plate through a vibration spring, the discharge plate is connected with the discharge disc through a first discharge opening, a plurality of scraping plates are arranged in the discharge disc, a rotary shaft is arranged in the center of the discharge disc, the scraping plates are evenly distributed on the rotary shaft, and a second discharge opening is formed in the discharge disc and is connected with the screening device through the lifting mechanism. According to the vibration feeding sterile capsule screening machine, when capsules are fed, dust removal can be carried out on the capsules, ultraviolet sterilization is carried out on the capsules, the capsules sleeved successfully and capsules not sleeved successfully can be distinguished, and quality conformance of the capsules is guaranteed.

The invention discloses a method for extracting resveratrol in polygonum cuspidatum fermentation liquor. The method comprises the following steps: (1) preparing an endophytic fungi L1 spore suspension liquid; (2) preparing a culture medium; (3) fermenting so as to obtain the polygonum cuspidatum fermentation liquor; (4) extracting the polygonum cuspidatum fermentation liquor with ethyl acetate for four times, combining ethyl acetate phases, concentrating till drying so as to obtain a crude resveratrol extract; (5) carrying out chromatography jointly through macroporous resin and silica gel; (6) refining so as to obtain the resveratrol product. The method is simple, has low production cost, slightly pollutes the environment, and is applicable to industrial production. The purity of the resveratrol purified and separated from the polygonum cuspidatum fermentation liquor by the method reaches 92wt%.

The first purpose of the invention is to provide a forging and pressing method of steel rail heel; a steel rail heel comprises a pre-forging heel and a final forging heel; the pre-forging heel comprises a first section, a second section, and a third section; the final forging heel comprises a fourth section and a fifth section; the method specifically comprises the following steps: implementing a first stage forging and pressing after heating the first section, the second section and the third section, wherein the first two sections are molded by forging and pressing, the third section is pre-deformed; and implementing a second stage forging and pressing after heating the last three sections. The provided forging and pressing method adopts a measure of molding twice, thereby being able to solve the defect that the size of the molded final forging heel is unqualified, as well as greatly reducing the molding force in the entire steel rail heel product molding process. The second purpose of the invention is to provide a three-position molding die with a simple integral structure; a second upper die section inside a pre-forging rail molding cavity and a first pre-forging insert inside a final forging molding cavity are both in detachable structures, thereby meeting different requirements to the three-position molding die in the twice forging and pressing process; the three-position molding die is convenient to be assembled, and strong in practicability.

The invention discloses a formation positioning process of assembly-type annular concrete electric pole connection components. The formation positioning process comprises the following steps: 1) performing binding formation on an electric pole reinforcement cages; 2) performing measurement, correction and welding formation on perpendicularity of a connection plane of connection components and a central axial line of a reinforcement cage framework. According to the formation positioning process disclosed by the invention, formation positioning processes are simplified to a maximum extent, and the correction difficulty is reduced. According to the formation positioning process of assembly-type annular concrete electric pole connection components disclosed by the invention, a splicing processof the connection components is normalized and guided; started with an operation method and a correction process, a simple and feasible process method is adopted, and the formation positioning technological process is normalized, so that the aims of ensuring that a quality requirement on the perpendicularity of the corresponding connection component of each section of electric poles is met and ensuring that the assembly-type annular concrete electric pole connection components is qualified are fulfilled.

The embodiment of the invention provides a method and system for capturing a respiratory cycle in magnetic resonance scanning. According to the embodiment of the invention, when a designated respiratory capture protocol is scanned in the magnetic resonance protocol scanning process, prompting information is displayed on an interface, the captured respiratory cycle is prompted, whether the currentrespiratory cycle of a subject is in a stable state or not, it is determined that trigger conditions are met if the current respiratory cycle of the subject is in the stable state, trigger informationof the captured respiratory cycle is received, the respiratory cycle of the subject is captured according to the trigger information, a scanning operator can be reminded of trigger of the captured respiratory cycle in time and is prevented from forgetting to capture, it is ensured that image acquisition is located in a relatively stable area, re-scanning needed due to more artifacts in images andpoor quality is avoided, and accordingly the working efficiency is improved. The problem is solved to some degree that in the prior art, image quality is not qualified and re-scanning is needed due to the fact that trigger of the captured respiratory cycle is forgotten in the prior art and accordingly the working efficiency is low.

The invention discloses a method for determining manufacturing technological conditions of standard varicosity membranes by testing the oil contents of the varicosity membranes. The method comprises the steps that 1, varicosity membranes of different batches are selected as samples to be extracted and dried for testing the oil contents of the varicosity membranes; 2, contrastive analysis is performed on the tested oil content data by combining different technological conditions such as deoiling oven temperature and the varicosity membrane thickness adopted by the varicosity membranes of different batches; 3, the varicosity membrane of the certain batch with the low oil content and the small difference between the technological conditions and original technological conditions is selected, infrared spectrum detection is performed on a carbon tetrachloride extract solution of the varicosity product manufactured through the membrane of the batch, and if no hydrocarbon substance is detected, the manufacturing technological conditions of the membrane of the batch are determined as the manufacturing technological conditions of the standard varicosity membrane. The method can well determine the setting temperature at which the amount of substance containing hydrocarbon of the varicosity product which cannot be detected by an infrared spectrum is manufactured by a deoiling oven so as to ensure that the final product is qualified in quality.

The invention relates to an iron symbiotic non-ferrous metal copper-lead-zinc comprehensive recovery process. The process comprises the following steps of carrying out medium-weak activation and weak collection on copper-lead-zinc mixed flotation, strongly removing chemicals, separating low-concentration copper from lead and zinc, and separating lead and zinc minerals by using a small-stroke large-stroke-frequency micro-fine mud shaking table. By means of hydrophobicity of copper-lead-zinc minerals after iron separation, copper-lead-zinc weak activation and weak collection complete mixed separation is achieved, the agent cost is saved, and the problems that due to strong activation and strong collection of a traditional process, the technical index of copper and lead-zinc separation is poor, and concentrates are high in mutual content are solved; copper is separated from lead and zinc by adopting low-concentration strong reagent removal, and copper and lead and zinc minerals are separated by utilizing the natural floatability of copper minerals on the basis of cleaning and activation of dilute sulfuric acid and pyrosulphurous acid; and lead-zinc concentrate adopts the micro-fine mud shaking table, the separation process of micro-particle lead-zinc minerals is strengthened by small stroke, large stroke-frequency and no flushing water, single lead concentrate and zinc concentrate are obtained, and the problems that the single lead concentrate and zinc concentrate cannot be obtained through iron-symbiotic copper-lead-zinc separation, the separation efficiency is low, the concentrate mutual content is high, and the concentrate value is low are solved.

The invention discloses a hydraulic machine and an application method thereof, belongs to the field of pressing machines, and aims to solve the problem of the pressure of a conventional hydraulic machine cannot be further improved due to the limit of oil cylinder volume. The hydraulic machine comprises a machine body, an oil cylinder, a sliding block and a worktable; the worktable is arranged on the lower side of the 'C'-shaped opening direction of the machine body; the hydraulic machine further comprises a beam arm and a guiding slideway; the beam arm is arranged at the top of the machine body; a second pin shaft hole and a fourth pin shaft hole are respectively formed in the two ends of the beam arm; an oil cylinder seat is arranged on the lower side at the opposite end of the 'C'-shaped opening direction of the machine body; one end of the oil cylinder is connected onto the oil cylinder seat through a first pin shaft, and the other end of the oil cylinder is connected onto the second pin shaft hole through a second pin shaft; one end of the sliding block is connected onto the fourth pin shaft hole through a fourth pin shaft, and the other end of the sliding block penetrates through the guiding slideway and faces and is perpendicular to the worktable. The bottleneck that the tonnage of the conventional hydraulic machine is limited by the oil cylinder volume is broken through, the pressure of the hydraulic machine is further increased, meanwhile, the production cost is not increased, the use is relatively flexible, and the production efficiency is improved.

The invention discloses a steel plate bending device. The steel plate bending device comprises a bottom plate. A hydraulic cylinder is attached to the central position of the top end of the bottom plate. An ejection rod is fixed to the top end of the hydraulic cylinder. Top plates are attached to the left side and the right side of the top end of the ejection rod separately. A first rotary shaft is fixed to the joint of the two top plates. According to the steel plate bending device, a to-be-machined steel plate is placed on the top plates through the cooperation between the top plates and thefirst rotary shaft, and the steel plate can be pushed by the hydraulic cylinders to be bent; the ends of the steel plate are fixed through the cooperation between lugs and rubber blocks and the cooperation between clamping plates and vertical rods; the position of a bolt in a nut is adjusted through the cooperation between a protractor and a pointer and the cooperation between the bolt and the nut till the protractor is attached to the to-be-machined steel plate to roughly measure the bending angle of the steel plate, so that it is ensured that the machine steel plate is qualified; and operation is easy, the practicability is high, and popularization is facilitated.

The invention belongs to the technical field of coking in the coking industry, and particularly relates to a tamping coal blending coking method, a product thereof and blended coal for coking. The tamping coal blending coking method comprises the step of blending various single coking coals to obtain blended coal, the coking coals do not contain coking coals, and the types and the weight percentages of the coking coals are as follows: 5%-15% of gas coal, 30%-40% of 1/3 coking coal, 5%-10% of gas-fat coal, 10%-15% of high-sulfur lean coal and 20%-30% of lean coal. The coking coal resource consumption can be reduced, and the requirement of long-term development can be met; meanwhile, coke quality is guaranteed, coal blending cost is reduced, and coke profit is increased.