64results about How to "Reduce reprocessing" patented technology

The invention relates to a preparation method for a poly(p-phenylene terephthamide) (PPTA) membrane, and belongs to the technical field of membrane materials and polymer polymerication. The preparation method comprises: adding a certain amount of a surfactant in a PPTA low-temperature solution polymerization process, adding a large amount of a solvent N-methylpyrolidone (NMP) into the polymerization system after polymerization is performed to a certain degree, so as to disperse the polymerization system, then adding a large amount of a dispersing agent to washing out the surfactant, and then performing reduced-pressure filtering on the PPTA dispersion solution, so as to obtain the membrane. The preparation method starts from a PPTA monomer, and the high-performance PPTA membrane with small shrinkage, high strength and isotropy is prepared through steps of polymerization, swelling, dispersing, filtering and drying. The employed surfactant is soluble polyoxyethylene ether high molecules with different molecular weight and different end groups, and the dispersing agent employs water, alcohols and other polar solvents. The preparation method has the characteristics of being simple and practicable in membrane preparation technology, safe in process, efficient, controllable and the like, and has good industrial application prospect.

A photovoltaic system is configured as minimizing the possibility of collapse relying on the self durability under any weathers or the other terrible conditions. The photovoltaic system comprises a plurality of solar tracking mechanisms arranged with a large solar energy panel enabling the solar energy panel incline and/or rotate along the solar track; a plurality of part control units for controlling one of the battery recharging, the external system communication and the electric motor driving, operation of the heater and the energy generating by the management; a central control unit connecting to a plurality of part control units at the same time to manage the collection of the photovoltaic energy; a measuring unit comprising the communication module arranged on the upper part of the supporting piece, a pyranometer, an anemoscope and a weathercock. The components are electrically-connected to the central control unit; a power delivery tower for delivering the energy collected by the central control unit to the external energy managing system; a monitoring unit connected to th e central control unit for monitoring all the units of the system.

The invention provides a data acquisition method, device and system. The data acquisition method is applied to an interface machine which is connected with a data acquisition area. The data acquisition method comprises the steps that real-time data files are obtained from a database server of the data acquisition area, the obtained real-time data files are converted into data files of a preset format, and the data files of the preset format are transmitted to a database server of a data supervision center. According to the data acquisition method, device and system, the real-time data files are directly obtained from the database server of the data acquisition area, the accuracy and real-time performance of data are ensured, the obtained real-time data files are converted into the data files of the preset format, then the data files of the preset format are transmitted to the database server of the data supervision center, and due to the fact that the data of the data acquisition area are all converted into the data files of the standard format, reprocessing process of the data is reduced.

The invention relates to a method for removing impurity elements Na and S from the precursor cobalt salt of cobaltosic oxide. The method comprises the steps of adding proper a washing assistant in the process of washing cobalt salt with pure water so as to wash impurity ions Na, SO4<2 minus> contained in the cobalt salt and enable the impurity ions to enter waste washing water, thereby obtaining high purity precursor cobalt salt; calcinating to obtain the high purity cobaltosic oxide. The method has the advantages of simple operation, good impurity removing effect, and less cobalt loss. Both the weight ratio and the content ratio of Na and S to Co in the processed cobalt salt are lower than 1:15000, thereby ensuring the electrochemical activity and building a foundation for promoting the electrochemical properties of lithium cobalt oxide in lithium ion battery anode.

The invention discloses a bast fiber plate waste recycling-based short fiber-reinforced composite material for automotive interiors. The bast fiber plate waste recycling-based short fiber-reinforced composite material is prepared from the following raw materials in parts by weight: 20-60 parts of crushed bast fiber plate materials, 100 parts of thermoplastic resin, 2-5 parts of an antioxidant, 1-3 parts of a light stabilizer, 2-5 parts of a lubricant and 0-10 parts of a flexibilizer. The bast fiber plate waste recycling-based short fiber-reinforced composite material has the beneficial effects that compared with the prior art, the bast fiber plate waste is recycled and changed into treasures; and the cost is reduced. The bast fiber plate is crushed and pelletized as a processing raw material for the short fiber-reinforced composite material, so that the problem that a bast fiber is difficult to feed is solved; the reprocessing technology of the bast fiber is reduced; the short fiber-reinforced composite material can be applied to the automotive interiors through an injection molding process; relatively complicated part injection molding manufacturing in the automobile industry can be further achieved; and the application situation that only the bast fiber plate is marketized in the field of the automotive interiors is also changed.

The invention relates to a hydrostatic actuator (1, 1a), in particular in a motor vehicle containing a drive unit (5), comprising an electric motor (6), a planetary roller gear system (7) that is driven by a rotor of the electric motor, and a hydrostatic master cylinder unit (8, 8a) which is driven by the planetary roller gear system and which is disposed around the planetary roller gear system. The aim of the invention is to increase the efficiency and reduce the production costs. This is achieved in that the master cylinder unit is formed from multiple master cylinders (10, 10a, 10b) which are distributed over the circumference with respect to a rotational axis of the rotor and each of which is connected to the planetary roller gear system.

The invention discloses an application of eutrophic water in the regulation of antioxidase activity of lawn plants, wherein the eutrophic water is the eutrophic water with 25 percent-75 percent of the original concentration; and the eutrophic water has TN of 9.7 mg/L-13.1mg/L, TP of 0.6mg/L -0.9mg/L and pH value of 8.12-8.99, wherein the activity of antioxidase comprises of superoxide dismutase, peroxide dismutase and catalase. Results show that the diluted eutrophic water is applied to irrigation to reinforce the activity of a protective enzyme system of lawn plants, thereby being capable of obviously improving the resistance ability of the lawn plants to adverse growing environment and providing technical support for the application of the eutrophic water in a lawn plant establishment system.

The invention discloses an application method of eutrophic water irrigation in the improvement of photosynthetic capacity of lawn plants, wherein the eutrophic water is the eutrophic water with 25 percent-75 percent of the original concentration thereof; and the eutrophic water has TN of 9.7mg/L-13.1mg/L, TP of 0.6mg/L-0.9mg/L and pH value of 8.12-8.99. Results show that the photosynthetic performances of the stomatal conductance, the intercellular carbon dioxide concentration, the net photosynthetic rate, the transpiration rate, the water content utilization efficiency and the like are improved if the diluted 25 percent-75 percent eutrophic water is used in the irrigation, thereby achieving the purpose of improving the lawn quality characters and protecting environment.

The invention relates to the field of steel bar processing technologies, in particular to an HRB400E twisted steel bar added with a high-nitrogen reinforced alloy and a production process thereof. Thetwisted steel bar comprises, by mass: 0.22-0.25% of C, 0.45-0.55% of Si, 1.40-1.50% of Mn, 0.010-0.020% of Ti, less than or equal to 0.040% of P, less than or equal to 0.040% of S, 0.009-0.012% of N,and the balance Fe and inevitable impurities. In the production process, the high-nitrogen reinforced alloy is added during smelting to replace a ferrovanadium alloy, a vanadium-nitrogen alloy and the like to be used for producing hot-rolled ribbed steel bars, and precipitation strengthening of N compounds is promoted through controlled rolling. Through a composite strengthening process, the strength, toughness and ductility of steel are improved, the steel has good welding performance and fatigue performance, and the cost per ton of steel is reduced. The problems that the production cost ofthe hot-rolled ribbed steel bars is high and vanadium resources are in shortage are solved, and the requirements of market development are met.

The invention discloses a method for removing organic pollutants in water through photocatalytically activating calcium peroxide. The method is characterized by comprising the following steps: addingwater into the calcium peroxide to prepare suspension liquid; meanwhile, regulating the pH (Potential of Hydrogen) value of the suspension liquid by utilizing a pH regulator according to different oxygen release and oxidization requirements; putting wastewater to be treated into a photocatalytic reactor; starting the reactor; after pre-heating a lamp tube and stably outputting a light source, adding the calcium peroxide suspension liquid into the wastewater; activating the calcium peroxide under the illumination of the light source to generate an active substance, so that degradation of the organic pollutants in the wastewater is realized. According to the method, the organic pollutants in the water are removed by photocatalytically activating CaO2; compared with a single oxidization repairing technology or a photocatalytic technology, the acting effect is more rapid, and the applicable range on the pollutants is wider.

The invention relates to a general frame system for an automobile exterior verification model. The frame system includes a main frame, a front tyre support and a front protective frame arranged at the front end of the main frame, and a rear tyre support and a rear protective frame arranged at the rear end of the main frame, the left and right sides of the main frame are respectively provided with a front-wheel support lock adjusting panel and a rear-wheel support lock adjusting panel, the front tyre support and the rear tyre support perform transverse adjustment along the length direction of the main frame by means of the front-wheel support lock adjusting panel and the rear-wheel support lock adjusting panel, and the frame system further includes a pair of side wall frames symmetrically arranged at the left and right sides of the main frame. Compared with the prior art, the general frame system is simple and compact in integral structure, and is economical and practical in use, and after the frames are modularized, the frames are relatively small and can be conveniently manufactured, the tyre supports can adjust the vehicle posture and axle distance, and when the automobile model is verified, an appropriate effect can be obtained.

The invention discloses a positioning and stamping die. The positioning and stamping die comprises an upper die holder, a lower die holder, a stamping assembly arranged on the upper die holder, a clamping rail arranged inside the lower die holder, and a positioning assembly clamped on the clamping rail and bearing products. The positioning assembly comprises a clamping block clamped on the clamping rail and a sucker arranged on the clamping block. Products are sucked on the sucker, the positioning and stamping die adapts to the product shape or stamping position by clamping the sucker on the clamping rail, products are prevented from shifting when impacted, the product stamping quality is ensured, reprocessing is reduced, and accordingly the cost is reduced.

The invention discloses a water surface garbage collecting and classifying device and method based on machine vision. The device comprises a support, a drainage device, a conveying belt set, a garbage classifying device, a vibration device and classified garbage cans. The support is installed on a ship and used for supporting the whole collecting and classifying device. The drainage device is arranged on the support and used for guiding garbage on a water surface to flow to the conveying belt set. The conveying belt set comprises a final conveying belt, a near-water conveying belt and a conveying belt motor, and the garbage on the water surface is conveyed to the vibration device through the near-water conveying belt. The vibration device vibrates and disperses the received garbage through rapid vibration and conveys the garbage to the garbage classifying device; and the garbage classifying device classifies garbage through image processing and carries out classifying operation on the garbage after planning the path of the garbage on the final conveying belt, and the final conveying belt conveys the classified garbage into the classified garbage cans. The garbage collecting and classifying method is used for collecting and classifying garbage on a normal water surface and aims at reducing environmental pollution and improving the garbage recycling rate.

The invention relates to a method for producing a bearing ring (20, 29), in particular a tapered roller bearing ring, comprising the following steps: making available an annular disc (8; 9), and forming the disc (8; 9) to give a substantially cylindrical bearing ring and producing a raceway (19; 28) of the bearing ring in a single operation by extrusion. According to the invention, the method achieves the object of providing a simple method for producing bearing rings, in particular for tapered roller bearings, which delivers high unit numbers and in which it is possible to dispense with a finishing operation.

The invention provides a fracturing propping agent and a preparation method thereof, and relates to the field of petroleum and gas exploration materials. The fracturing propping agent is mainly prepared from the following raw materials in percentage by mass: 60-75% of shale, 10-25% of bauxite propping agent wastes and 5-15% of potassium feldspar. By adopting the fracturing propping agent, the technical problems that in the prior art a fracturing propping agent is high in price of raw materials, high in production cost and low in cost performance are solved, and technical effects that the raw material cost is lowered, the production cost is lowered and the cost performance is improved are achieved.

The invention provides mesoporous silica (SiO2) and a preparation method and application thereof, and belongs to the field of silicone fillers. The specific surface area of the mesoporous SiO2 is 367-407 m2/g, and the average pore diameter is 11.26-13.65 nm; and the content of surface hydroxyl is 0.498-0.541 mmol/g. The method for preparing the mesoporous SiO2 comprises the steps: a natural mineral (olivine or serpentine) is adopted as a silicon source, the mesoporous SiO2 is prepared through a one-step method, firstly the natural mineral silicon source is added into an acid, surfactant and porogenic agent mixed solution, the mixture is stirred for a period of time at the specific temperature to sufficiently react, after reacting is completed, centrifugal separation is conducted, a silicon-containing precursor is obtained, the silicon-containing precursor is subjected to still standing, filtered, washed and dried and then calcined at the high temperature, then the mesoporous SiO2 is obtained, and then the obtained mesoporous SiO2 is bonded to C18 and then used for high performance liquid chromatography fillers.

An easily removed surficial coated layer of the metallic product to be cold-extruded is prepared from gypsum, machine oil and lubricating grease in weight ratio of 1:(3-10): (0.1-0.8) through mixing. The thickness of coated layer is 100-250 microns.

The invention discloses an application of eutrophic water to resistance regulation of lawn plants, wherein the eutrophic water is the eutrophic water with 25 percent-75 percent of the original concentration; the eutrophic water has TN of 9.7mg/L-13.1mg/L, TP of 0.6mg/L-0.9mg/L and pH value of 8.12-8.99; and the evaluation indicator of the resistance refers to the change in contents of proline, soluble sugar and malonaldehyde. Results show that the diluted eutrophic water is applied to irrigation to improve the resistance of the lawn plants to adverse growing environment and achieve the purpose of resource conservation and environmental protection.

The invention discloses an environment-friendly fertilizer device based on databases. The environment-friendly fertilizer device comprises a working box, a smashing space is arranged in the working box, a smashing and driving space is arranged in the right end wall of the smashing space, a smashing mechanism is arranged in the smashing and driving space, a transmission space is arranged in the lower end wall of the smashing space, a driving space is arranged in the lower end wall of the smashing and driving space, a stirring space is arranged in the lower end wall of the transmission space, aquantifying space is arranged in the lower end wall of the driving space, a hydraulic space is arranged in the lower end wall of the stirring space, and a stirring mechanism is arranged in the drivingspace. The environment-friendly fertilizer device is simple in structure and convenient to operate. Energy-saving transmission of the device is achieved under mechanical transmission when the deviceworks, operation of the device is achieved under the situation that the power source is less, meanwhile, the device can sufficiently ferment kitchen waste, and thus the re-treatment process in the follow-up steps is reduced.

The invention relates to a method for adjusting the axial play between a motor armature and a bearing (50) that is secured to an armature shaft (30) and for axially securing the motor armature, comprising the following steps : - pressing a first washer (10) onto the armature shaft (30) in the predetermined mounting position of said washer on the armature shaft (30), to form a press-fit, - pressing a spacer sleeve (40) onto the armature shaft (30) to form a press-fit and to bring the spacer sleeve (40) into contact with the first washer (10), - mounting the armature shaft (30) in a second bearing of a motor housing (90), - positioning a motor cover (70), which is provided with the bearing (50), on the armature shaft (30) and securing the motor cover (70) on the motor housing (90), - pressing a second washer (20) onto the armature shaft (30) to form a press-fit and to bring the second washer (30) into contact with the spacer sleeve (40).

The invention discloses a precoated sand mold for copper piece casting. The precoated sand mold comprises casting cavities, a casting liquid channel, a slag avoiding inner core and a casting nozzle channel. The casting cavities are distributed around the casting liquid channel and communicated with the casting liquid channel. The slag avoiding inner core is communicated with the bottom of the casting liquid channel and the bottom of the casting nozzle channel, and the position of the slag avoiding inner core is lower than that of the casting liquid channel. The invention further provides a copper piece casting method. The copper piece casting method comprises the steps that the precoated sand mold is manufactured; then casting is carried out; the casting temperature of pure copper is controlled to range from 1,150 DEG C to 1,200 DEG C, and the casting temperature of copper alloy is controlled to range from 950 DEG C to 1,050 DEG C; casting is carried out based on the flow control principle of carrying out casting slowly and then carrying out casting fast; and after casting is finished, cooling molding is carried out, and the sand mold is removed. The precoated sand mold is high in production efficiency, a produced copper casting material is high in material utilization rate and rate of finished products, the defect of slag inclusion in the casting can be effectively overcome, and a good foundation is laid for next finish machining.