83results about How to "Good economical applicability" patented technology

The invention aims at providing a treatment scheme of ammonia nitrogen in sucralose production wastewater, and discloses a method for recovering dimethylamine from sucralose production wastewater. The method comprises the following steps: a highly alkaline material is added into wastewater containing 10-30% of dimethylamine hydrochloride and 1-5% of N,N-dimethylformamide, such that an intermediate product with a dimethylamine concentration of 10-30% is obtained; the intermediate product is subjected to rectification purification, such that a dimethylamine solution with a concentration higher than 35% is obtained. The technical scheme provided by the invention has the advantages of low energy consumption, low investment, and reasonable economic benefit. While ammonia nitrogen wastewater is treated, dimethylamine is recovered. The method has high practicality and good economic applicability for enterprises.

The invention relates to a method for separating Kudinoside A and Kudinoside D from Ilex kudingcha C.J.Tseng. The method comprises the following steps: using an Ilex kudingcha C.J.Tseng (Ilex kudingcha C.J.Tseng ) medicinal material as a raw material, extracting through an alcohol solution, chloroforming for removing impurities, extracting through n-butyl alcohol, and performing macroporous resin column chromatography and reversed-phase high performance liquid refining separation and recrystallization so as to obtain a high-purity monomeric compound of the Kudinoside A (Kudinoside A) and the Kudinoside D (Kudinoside D). The technical method disclosed by the invention is simple and reliable, raw materials are easy to obtain, the economic cost is low, the purity of the monomeric compound is high, and the method is suitable for large-scale preparation of the kudinoside A and the kudinoside D.

The invention discloses a preparation method and application of a Cu/MOF catalyst in acetylene hydrochlorination reaction. The Cu/MOF catalyst takes a metal organic framework material as a carrier, and the preparation method comprises the following steps: loading a bivalent copper-containing precursor on the carrier by a solution impregnation method, carrying out vacuum drying treatment, and then treating by a glow discharge method to finally obtain the Cu/MOF catalyst. The prepared Cu-MOF catalyst is applied to acetylene hydrochlorination reaction, high conversion rate and high selectivity of acetylene hydrochlorination reaction can be achieved, the stability is high, and the Cu-MOF catalyst has high economic applicability and industrial application value.

The invention relates to a hydraulic swing cylinder driving joint based robot hydraulic mechanical arm. The robot hydraulic mechanical arm includes a small joint arm and a big joint arm; the small joint arm and the big joint arm are connected through a joint arm connection rod; each of driving joints of the small joint arm and the big joint arm includes two hydraulic swing cylinders, wherein output shaft ends of the two hydraulic swing cylinders are mutually perpendicular; the hydraulic swing cylinders are arranged in a support; the output shaft ends of the hydraulic swing cylinders in the support are connected to gears; and the gears are engaged with potentiometer gears at the tails of the potentiometers. The robot hydraulic mechanical arm is simple in structure, is convenient in modular production, and can be applied and promoted to industry; a driving section is driven by the hydraulic swing cylinders, a large output torque can be acquired, and the bearing capability is further improved; and meanwhile, the rigidity is better than that of motor-driven mechanical arms, the production cost is low, the difficulty of manufacture is small, better economy can be acquired, and the practicality is high.

The invention discloses a two-dimensional visual grouting experiment box and a use method, and aims to accurately grasp the diffusion rule and the flowing property of filling slurry between broken roofs or caving gangues and facilitate people to research the filling performance, the grouting effect and other contents of the filling slurry. The two-dimensional visual grouting experiment box mainly comprises a transparent acrylic plate, fixed channel steel, screws and the like. Six transparent acrylic plates are fastened into a box body through components such as a groove structure, fixing channel steel and screws, a grouting hole is drilled in the center of a front plate of the box body, and concentric circles are drawn with the grouting hole as the center and used for observing the diffusion radius, path and effect of filling slurry. The two-dimensional visual grouting experiment box is convenient to operate, simple and easy to implement and small in size, a large amount of cost is saved, blindness and uncertainty risks of on-site grouting and filling are reduced, and scientific research and verification can be facilitated.

The invention discloses a dual-polarized filtering patch antenna with high selective gain. The dual-polarized filtering patch antenna comprises a metal reflection floor, a first dielectric substrate,a second dielectric substrate, a first metal column, a second metal column, a first metal feed sheet and a second metal feed sheet which are sequentially arranged from bottom to top, a preset distanceis kept between the metal reflection floor and the first dielectric substrate, a preset distance is kept between the first dielectric substrate and the second dielectric substrate, an air layer is formed, two input through holes are formed in the metal reflection floor, the metal feed pieces are connected with the input through holes through metal columns respectively, and the metal columns and the input through holes form input ports. The first dielectric substrate is provided with a first rectangular patch, the first rectangular patch is provided with four slot lines which extend from fourcorners of the first rectangular patch to the center and are not intersected with each other, the second dielectric substrate is provided with a second rectangular patch, and the center of the secondrectangular patch is provided with a cross-shaped slot line; the dual-polarized filtering patch antenna has impedance matching characteristics, and the rectangular patch is applied to introduce a radiation zero point, so that the dual-polarization structure is reserved, and the filtering performance is realized.

The invention discloses a multilayer functional gradient vertical shaft wall structure. The shaft wall structure comprises a plurality of coaxial concrete functional layers, wherein the using functions of the functional layers of the whole shaft wall structure are changed in a gradient mode from outside to inside, a functional gradient shaft wall can be composed of an anti-seepage layer, a water pressure resisting layer, an anti-corrosion layer, a fire resisting layer and other functional layers, the water pressure resisting layer is composed of multiple coaxial and equal-thickness structurallayers with the elasticity modulus changed in a gradient mode in the radial direction, the elasticity modulus of the structural layers of the water pressure resisting layer is gradually reduced from outside to inside, the structural layers of the water pressure resisting layer can be in direct contact connection or connected through connecting pieces, and the functional layers are in direct contact connection. The water pressure resisting layer of the functional gradient shaft wall enables stress in the shaft wall to be redistributed by changing the elasticity modulus, the strength of concreteon the outer side of the shaft wall is fully utilized, and the bearing capacity of the shaft wall is fully exerted. The functional layers such as the anti-seepage layer, the water pressure resistinglayer, the anti-corrosion layer and the fire resisting layer of the functional gradient shaft wall are combined for use, the using performance of the shaft wall under the complex geological conditionis improved, and the application range is widened.

The invention discloses an activecarbon catalystloaded with copper-containing high-entropy alloy for acetylene hydrochlorination reaction as well as a preparation method and application of the active carbon catalyst. The catalyst comprises an activated carbon carrier and a metal component loaded on the carrier, the metal component is composed of a Cu element, a metal element A and a metal element B, the metal element A represents one or two precious metal elements of Au, Ag, Pd, Pt and Ru, the metal element B is selected from two or three metal elements of Fe, Mn, Zn, K, Ca, Sn, Ni, Co, Cr, Al and In, the number of the metal elements A and B is four, and the metal element B represents one or two precious metal elements of Au, Ag, Pd, Pt and Ru. The loading capacity of the copper element is 10-30 wt%, the loading capacity of each of the A metal elements is 0.01-0.05%, and the loading capacity of each of the B metal elements is 10-30 wt%. According to the preparation method of the catalyst, a traditional impregnation method and an electromagnetic field stirring technology are combined, and the prepared catalyst shows super-long stability and super-high activity in a reaction for preparing vinyl chloride through acetylene hydrochlorination.

The invention discloses a circular knitting machine density regulating device with an inductive alarm mechanism, which comprises a driving mechanism, a transmission mechanism, a dynamic density triangular mechanism and a piston mechanism, wherein the driving mechanism, the transmission mechanism, the dynamic density triangular mechanism and the piston mechanism are all mounted on a triangular base; the driving mechanism drives the dynamic density triangular mechanism to move through the transmission mechanism; the driving mechanism comprises a density motor, a density motor frame and a driving cam; and the inductive alarm mechanism is mounted on the density motor frame and comprises a sensor hexagon nut, a sensor nut, a sensor pin and a sensor. When a pneumatic piston does not push the dynamic density triangular base to a perfect position, the sensor pin is separated from the front end face of the dynamic density triangular base, at the moment, the sensor connected between the sensor hexagon nut and the sensor nut is used for the inductive alarm.

The invention relates to the technical field of ventilation auxiliary windows, in particular to a solar-type ventilation auxiliary window. The solar-type ventilation auxiliary window comprises a flexible window screen, a window frame, heating net-shaped structures and louver blades. Heating net-shaped structure connecting shafts are arranged at the upper ends and the lower ends of the heating net-shaped structures correspondingly, and penetrating holes are formed in the two sides of the heating net-shaped structures in a protruding mode correspondingly. First connecting silks of the flexible window screen penetrate through silk penetrating pieces a of the flexible window screen to be connected with the two louver blades, and second connecting silks of the flexible window screen are connected with the window frame through silk penetrating pieces b of the flexible window screen and fixed to the penetrating holes in the heating net-shaped structures. A wire box is mounted at one end of areel, and a wire outlet is formed in the other end of the reel. A solar cell panel is electrically connected with heating pieces. According to the solar-type ventilation auxiliary window, solar heating can be utilized, safety and environmental friendliness are achieved, solar energy is utilized for providing electric energy for operation of a stepper motor, the purpose of noise reduction can be achieved, the sound insulation effect is good, and economic applicability is good.

The invention relates to a switch reluctance machine system for new energy internet. The switch reluctance machine system for new energy internet comprises a bidirectional DC/DC converter and an inversion unit, wherein the bidirectional DC/DC converter is connected between a DC bus and a storage battery pack, the inversion unit is connected between the DC bus and an AC load, an input end of a bidirectional DC inverter is connected with the DC bus, an output end of the bidirectional DC inverter is connected with the storage battery pack, the inversion unit comprises a front-stage DC/DC boost conversion circuit and a post-stage DC/AC inversion circuit, an input end of the front-stage DC/DC boost conversion circuit is connected with the DC bus, and an output end of the front-stage DC/DC boostconversion circuit is connected with the AC load via the DC/AC inverter. The switch reluctance machine system for new energy internet can be used for a DC load and the AC load, energy is stored by astorage battery when electric quantity is sufficient, the energy is provided by the storage battery when the electric quantity is insufficient, and energy flowing in the system is achieved.

The invention provides a UGT enzyme activity detection method not used for disease diagnosis and treatment and application of the UGT enzyme activity detection method in screening and evaluating a UGT enzyme regulating agent. According to the detection method, radix ophiopogonis isoflavone A is used as a substrate, and the conversion rate of the radix ophiopogonis isoflavone A or the generation rate of a 7-O-glucuronic acid product of the radix ophiopogonis isoflavone A is quantitatively detected through a liquid-phase ultraviolet method or a liquid-phase mass spectrometry method so as to detect the activity of UGT enzyme. The method disclosed by the invention has the characteristics of high sensitivity, strong stability, good repeatability, simplicity, easiness in operation and the like; the method is used for screening and evaluating various reported UGT enzyme regulators, has extremely high accuracy and has a very good application prospect.

The invention relates to the field of oil solvents, in particular to novel anti-rust oil and a preparation method of the novel anti-rust oil. In allusion to the problems that existing anti-rust oil is poor in anti-rust performance and film-forming stability during use, poor in corrosion inhibition, high in viscosity and poor in film-forming quality, the invention proposes the following scheme: the novel anti-rust oil comprises the following raw materials in parts by weight: 70-85 parts of base oil, 8-14 parts of a composite corrosion inhibitor, 5-7 parts of an alkaline solution, 2-5 parts of paraffin, 20-35 parts of a diluent, 20-35 parts of butyl cellulose, 1-3 parts of a film-forming agent and 1-2 parts of an antioxidant. The alkaline solution is doped to improve the anti-rust performance; the composite corrosion inhibitor is doped to improve the corrosion inhibition strength so as to enhance the anti-rust effect; the paraffin is doped to enhance the film-forming stability when the anti-rust oil is used; and by doping the diluent, the anti-rust oil has the characteristic of low viscosity and is easy to coat, the consumption of the anti-rust oil is reduced, and by cooperatively doping the butyl cellulose, the anti-rust oil is good in coverage and uniform in film formation.

The invention discloses a preparation method for a doped-element-free black oxide film of a titanium surface. The surface of a titanium part is subjected to sand blasting treatment so that the roughness Ra of the surface can be greater than or equal to 0.4 microns, then degreasing and acid pickling are conducted, and the titanium part subjected to acid pickling is arranged in an anodic electrolyteand used as an anode for direct current anodizing treatment; the anodic electrolyte comprises organic acid and inorganic salt; the direct current anodizing treatment adopts a gradient gradual pressure rise mode; and after treatment is completed, a black sample is obtained, that is, the doped-element-free black oxide film is formed on the surface of the titanium part surface. Through the preparation method, other elements except a matric are not introduced to the surface of the titanium part, and the surface is good in stability, high in color fastness and good in biocompatibility.

The invention relates to a welding operation, in particular to a welding baffle and more in particular to an easily-dismountable welding composite baffle. The easily-dismountable welding composite baffle comprises a steel plate, wherein a groove gap is formed in the middle of the steel plate; two sink holes are formed in each of the two sides of the groove gap; strong magnets are embedded into the sink holes; 8-10 air outlets are uniformly distributed in the bottom surface of the groove gap; and fire clay is applying to the groove gap and dried. According to the easily-dismountable welding composite baffle, a welding arc strike and blowout plate is replaced, the welding efficiency is improved, and the material is saved.