76results about How to "Play a role in removing impurities" patented technology

The invention discloses an Al-Fe-Zn-Mg rare earth alloy wire and a preparation method thereof. The aluminum alloy comprises the following elements: 0.3-1.2wt% of Fe, 0.01-0.3wt% of Zn, 0.01-0.4wt% of Mg, 0.1-1.5wt% of rare earth element and the balance of Al and inevitable impurities, wherein the rare earth element is composed of one or more of cerium, lanthanum, neodymium and yttrium. The preparation method of the aluminum alloy wire comprises the following steps: preparing an aluminum alloy rod through smelting, casting and rolling, performing insulation treatment in a heat holding cover at 240-320 DEG C for 10-20 hours, wiredrawing and extruding insulating material on the wire; or preparing an aluminum alloy rod through smelting, casting and rolling, drawing the aluminum alloy rod to prepare the aluminum alloy wire, performing semi-annealing treatment in an annealing furnace at 340-380 DEG C for 5-10 hours, and finally extruding insulating material on the wire. The aluminum alloy wire prepared by the method of the invention has excellent electrical property, mechanical property and corrosion resistance and can be used in the wire and cable conductors.

The invention relates to a method for preparing vanadium pentoxide, relates to a vanadium-containing acidic solution, in particular to a method for producing high purity vanadium pentoxide by treating the vanadium-containing acid leaching liquid of stone coal vanadium ore. The method is characterized in that the preparation process comprises the following steps: (1) adjusting the pH value of the vanadium-containing acidic solution to 4.0-4.5, precipitating, filtering; (2) performing oxidation and alkaline leaching to obtain alkaline leaching liquid and slag; (3) adjusting the pH value of the alkaline leaching liquid to 1.8-2.2, then adding ammonium salt to perform vanadium-precipitating reaction and prepare ammonium vanadate vanadium slag; and (4) calcining ammonium vanadate vanadium slag to prepare vanadium pentoxide. The method can be used to treat the stone coal vanadium ore leaching liquid with low vanadium concentration and the vanadium solution with high vanadium concentration; the flow is simple, the investment is lower than that of the traditional process; and impurities can be controlled well, high purity vanadium pentoxide can be obtained and the economic value of the product can be effectively increased.

The invention discloses a long vehicle low-temperature steaming technology for fiber textiles and equipment. The technology comprises the following steps of (1) preparing gray cloth, (2) singeing, (3) desizing, (4) scouring, (5) rinsing and (6) drying. The invention further discloses long vehicle low-temperature steaming equipment for fiber textiles. The equipment comprises a scouring mechanism. The scouring mechanism has an immersion barrel and a steaming case connected with the immersion barrel, wherein the steaming case is provided with a case body equipped with an accommodating cavity; a steaming cavity steaming and heating textiles and a temperature balancing cavity preventing steam coagulation and on the upper part of the steaming cavity are disposed in the case body; the case body is equipped with a first steam supplying assembly and a second steam supplying assembly both providing high-temperature steam to the steaming cavity and the temperature balancing cavity. The steaming equipment can effectively reduce equipment energy consumption, save energy and improve production efficiency; and the long vehicle low-temperature steaming technology has short circulating, high efficiency, and can reduce water and energy use.

The invention relates to an additive for producing macrocrystalline fused magnesite. Main components of the additive are high purity graphite powder, rare earth oxide composition and zirconium oxide. The additive is characterized in that the addition mass of the high purity graphite powder accounts for 0.5-5% of the mass of magnesium oxide, the addition mass of the rare earth oxide accounts for 0.01-1.5% of the mass of magnesium oxide, and the addition mass of zirconium oxide accounts for 0.1-3% of the mass of magnesium oxide. The massive white transparent high purity fused magnesite is obtained by pointedly adding corresponding impurity removal materials according to the type and content of impurities in the magnesium oxide raw material in combination with an appropriate technological process; the technological process is simple; the dosage of the additive is small, but the additive has an obvious effect. Due to optimization of the additive and the technology, the melting power and time are reduced, the utilization rate of raw materials is increased, and the effects of energy conservation and emission reduction are achieved. The additive is easy to obtain, simple in process, low in cost and suitable for large-scale industrial production and application; requirements for required equipment are low.

The invention discloses a spinning machine. The spinning machine structurally comprises a phototube, a support, a control panel, a telescopic tube, a cotton delivery tube, a screw, a cart, a central shaft, an iron attracting device, inner-circle wall boards, outer-circle wall boards, a ground rail and a cotton grabbing beater, wherein the outer-circle wall boards are connected with the ground rail, the ground rail is movably connected with the support, the support is provided with the control panel, the control panel is connected with the phototube, the support is connected with the telescopictube, the bottom of the telescopic tube is connected with the cart, the iron attracting device is arranged in the cart, the bottom of the cart is movably connected with the cotton grabbing beater, the top of the telescopic tube is connected with the cotton delivery tube, the support is movably connected with the central shaft, the central shaft is movably connected with the inner-circle wall boards, the iron attracting device consists of a motor, a rotary shaft, an iron scraping plate, an iron collecting box and a powerful magnet, the motor is movably connected with the rotary shaft, the rotary shaft is connected with the powerful magnet, and the powerful magnet is movably connected with the iron scraping plate. The spinning machine can attract irony impurities in cotton, play an impurityremoving effect and improve the working quality.

The invention belongs to the technical field of variable frequency motors, and particularly relates to a 3300V high-voltage permanent magnet variable frequency motor all-in-one machine which comprisesa machine shell, a frequency converter assembly and a permanent magnet synchronous motor assembly. The permanent magnet synchronous motor assembly comprises a stator, a rotor and a rotating shaft. Amotor cavity and a frequency conversion cavity are formed in the machine shell. The permanent magnet synchronous motor assembly and the motor cavity jointly form a permanent magnet synchronous motor.The frequency converter assembly is installed in the frequency conversion cavity. A heat dissipation cavity is formed in the end, located in the motor cavity, of the machine shell. A rotating shaft inthe permanent magnet synchronous motor assembly extends into the heat dissipation cavity. By arranging a water storage cavity and a circulating cavity and utilizing rotation of the rotating shaft, water flow in the lower water storage cavity is pumped into the circulating cavity through the water pumping pipe, after the water flow makes contact with the pumped outside air, the water flow flows into the heat exchange cavity, the air flow enters the motor cavity, and heat conduction between the permanent magnet synchronous motor assembly and the machine shell is effectively accelerated and enhanced.

The invention particularly relates to a vacuum pump. The vacuum pump comprises a vacuum pump body and an impeller. The top of the vacuum pump body is connected with an air inlet pipe and an air outlet pipe. The top of the air inlet pipe is provided with an air inlet. The top of the air outlet pipe is provided with an air outlet. A pipe sleeve is arranged on the periphery of the air inlet pipe and the air outlet pipe in a sleeving mode. The lower end of the air inlet is connected with the upper end of a filtering mechanism. The filtering mechanism comprises a rubber ring and a filtering assembly. The filtering assembly comprises a first metal net layer, a phenolic paper element and a second metal net layer. A check valve is arranged at the lower end, close to the vacuum pump body, of the inlet pipe. A silencing mechanism is connected with the upper portion of the air outlet. The silencing mechanism sequentially comprises a pipe, silencing cotton and a metal plate from outside to inside. An outer shell is arranged on the periphery of the vacuum pump body in a sleeving mode. The pipe sleeve is provided with an opened plate. The outer wall of the vacuum pump body is connected with a thermometer. The thermometer is connected with an alarming device which is arranged on the outer side wall of the outer shell. The service life of the vacuum pump is greatly prolonged through the reasonable structural design.

The invention relates to an additive for producing high-purity fused magnesite. The main components of the additive are high-purity graphite powder, rare earth oxide and titanium oxide. The additive is characterized in that the adding dosage of the high-purity graphite powder is 0.5-5% of the mass of magnesium oxide; the adding dosage of the rare earth oxide is 0.01-0.5% of the mass of magnesium oxide; the adding dosage of titanium oxide is 0.1-5% of the mass of magnesium oxide. In the additive provided by the invention, the chemical form oxides are used for replacing an expensive rear earth alloy material, the main components of the additive are high-purity graphite powder, such rare earth oxide combinations as lanthanum oxide, cerium oxide and the like and titanium oxide, and the components are added in the raw material in different smelting stages; impurity removal and purification are performed by means of the excellent properties of the rare earth oxide and titanium oxide, and massive white transparent high-purity fused magnesia is obtained by appropriate process flows.

The invention relates to a method for preparing high-purity xylooligosaccharide. The method includes subjecting a solution, obtained by removing lignin from black liquor or plant extract, to adsorption treatment by activated carbon, and performing solid-liquid separation to obtain purified liquid I; adsorbing monosaccharide in the purification liquid I by strong acidic cation exchange resin; mixing purified liquid II obtained after absorption with an organic solvent, removing impurities through purification and extraction, and concentrating and crystallizing a xylooligosaccharide solution obtained after impurity removal to obtain the high-purity xylooligosaccharide. The method has the advantages that the solution obtained by removing the lignin from the black liquor or the plant extract isused as a raw material, and is sequentially subjected to the steps of decolorization and adsorption by the activated carbon, adsorption by the strong acid cation exchange resin, purification and extraction by the organic solvent, and the like to obtain the high-purity xylooligosaccharide of which the purity is higher than 95%; resources are fully utilized, and the method has good economic benefits and application prospect.

The invention relates to a selective filtering precleaner, and belongs to the field of feed processing.The selective filtering precleaner comprises a machine body, a screen drum is rotationally connected into the machine body, a feeding pipe is arranged on the machine body, a discharging hopper is arranged at the bottom of the machine body, the feeding pipe is communicated with a precleaner pipeline and a receding pipeline, and the receding pipeline is communicated with the interior of the screen drum; the receding pipeline is communicated with the discharging hopper, a reversing mechanism is arranged on the feeding pipe and located between the precleaner pipeline and the receding pipeline, and the reversing mechanism is used for communicating the feeding pipe with the precleaner pipeline or communicating the feeding pipe with the receding pipeline. According to different conditions of the materials, the materials selectively enter the screen drum for preliminary cleaning or directly enter the discharging hopper for subsequent machining procedures, and the effect that the equipment abrasion degree caused by unnecessary use of a preliminary cleaning screen is reduced is achieved.

The invention discloses powder flame retardant improving equipment. The powder flame retardant improving equipment is provided with a heating stirrer (100), a mixer (200) and an impurity removal device (300) which are arranged from front to back in sequence, wherein the heating stirrer (100) comprises a rack (101); a stirring slot (102) is formed above the rack (101); a stirring blade (103) is arranged on the bottom of the stirring slot (102); a wall (104) of the stirring slot (102) is hollow; a heating sheet (105) is arranged in the wall (104); a discharge hole (106) is formed in the bottom of the stirring slot (102), and a material dropping slot (107) is formed below the discharge hole (106) and is connected with a connecting channel (108); a material dropping hole (109) is formed in the other end of the connecting channel (108); a feeding screw rod (110) is arranged in the connecting channel (108); a rotary gas cylinder (111) is fixed outside the wall (104); an output rod of the rotary gas cylinder (111) is fixed on the connecting channel (108).

The invention relates to the technical field of agriculture product processing, in particular to a grain crop light-impurity treatment system which comprises a screening box, a controller, a screeningmechanism and a holding mechanism. The top part of the screening box is of a wedge-shaped structure; the screening mechanism comprises a first cover plate, a filter plate, a clapboard, a drive motor,two groups of adsorption assemblies and two groups of jacking assemblies; the holding mechanism comprises a second cover plate, a pushing assembly and four plug pins; and the drive motor, the pushingassembly and the controller are electrically connected. According to the grain crop light-impurity treatment system provided by the invention, two kinds of grains can be subjected to light-impurity treatment at the same time, and meanwhile, impurities in grain crops are separately screened and collected, so that a secondary utilization effect can be achieved; the whole screening mechanism is driven by one motor, so that the manufacturing cost is saved, and the light-impurity treatment cost is reduced; and in addition, through designing an observation window, the transparency of the treatmentprocess is realized, and the working efficiency is further improved.

The invention discloses a grain storage system for grain storage, and relates to the technical field of grain storage. The system includes a first storage tank, a first conveying cylinder, an impurityremoval box, a drying cylinder, a second storage tank, a second conveying cylinder, a material storage bin and an impurity storage box. The storage system is of a continuous type, continuous impurityremoval, drying and storage of grains can be carried out, not only can the work efficiency be increased, but also use of manpower can be reduced, and the economic benefits can be improved indirectly;through combined use of a first filter net, a fan, a through hole, a fan group, a connection hole, an exhaust hole and a second filter net, lightweight impurities and fallen grain hulls which are contained in the grains can be removed, the effect of impurity removal of the grains can be achieved, and the quality of the grains is improved; and through combined use of a drive motor, a central shaft, an adjustment plate and a material discharge hole, the grains can be introduced evenly into the material storage bin, so that accumulation of the grains in the material storage bin is prevented, andthe service life of the material storage bin is increased.

The invention provides a ground dropped walnut collecting machine. The machine comprises a support structure, a conveying belt device, an impurity removing device, a collecting device, a v-shaped rolling brush device, a rolling brush device, a power system and a control system. All the devices and systems of the machine are connected through profiles in the support structure. The v-shaped rolling brush device and the rolling brush device are arranged at the head of the machine, rolling brushes with the adjustable angle are adopted for pre-collection, missing of walnuts can be prevented, and the proper angle can be adjusted according to actual conditions; the conveying belt device and the power system are arranged in the middle of the machine, the conveying belt device upwards conveys the walnuts conveyed by the rolling brushes, meanwhile, the hollow-out part of the conveying belt device plays a certain role in impurity removal, and the power system provides power for the conveying belt device; and the impurity removing device and the collecting device are arranged at the tail of the machine, a rocker mechanism converts rotation of motors into telescopic motion of rods, a collecting basket is enabled to shake, then the walnuts obtained after impurity removal enter the collecting device, and collection of the dropped walnuts is completed. The control system of the machine controls rotation of the motors in the v-shaped rolling brush device, the rolling brush device and the impurity removal device, so that movement of all the devices is achieved; and the machine completes collection of the dropped walnuts through the combined action of all the devices and systems, is high in efficiency, saves manpower, and is suitable for being used in small and medium-sized walnut planting areas.

The invention discloses a melt purifying agent for vacuum melting of a magnesium-aluminum alloy melt and a preparation method thereof. The purifying agent is prepared from the following components in percentage by mass: 1.0-3.0% of rubidium bromide, 0-0.5% of phenolic resin and pure aluminum . The method for preparing the aluminum-based composite material purifying agent comprises the following steps: proportioning, grinding, drying, ball-milling and granulating to prepare particles with the particle size of 1-10mm. The purifying effect of the melt purifying agent combined with a vacuum purifying technology is far better than the effect of singly using the vacuum purifying technology. By using the purifying agent, the melt purifying time can be greatly shortened, the heat loss of the melt is reduced, the sealing requirement of vacuum equipment is lowered, and the application range of the vacuum purifying technology is expanded.

The invention discloses a hopper for a sugarcane harvester. The hopper comprises a bottom installation plate, a lower surrounding plate, an upper surrounding plate, a side installation plate, an upper installation base, a supporting plate, a hoop and a reinforcing surrounding plate, wherein the upper portion of the bottom installation plate is connected with the lower surrounding plate, the upper portion of the lower surrounding plate is connected with the upper surrounding plate, the upper surrounding plate is an annular bent face plate, and the shape of the upper surrounding plate is matched with the shape of the upper end face of the lower surrounding plate. For reinforcing the strength of the hopper, the reinforcing surrounding plate is welded to the upper portion of the upper surrounding plate after wrapping the hoop, and the hoop is a reinforcing rib with the shape and size matched with those of the upper end face of the hopper. The opening of the harvester is attached to and fixedly connected with a conveying arm of the sugarcane harvester, and a notch at the opening abuts against a feed port of the conveying arm. Due to the design of through holes evenly distributed in the lower surrounding plate, the weight of the hopper can be effectively reduced, a certain impurity removal effect can be achieved, and mud and slag can be discharged out of the hopper through the through holes of the lower surrounding plate; by adding the hoop, the strength of the hopper is firmer, deformation is prevented, and the service life is prolonged.

The invention relates to the technical field of spinning production equipment, in particular to a yarn impurity removing and cleaning device based on spinning processing, which comprises a base, a water storage tank is fixed at the center of the upper surface of the base, a stirring assembly is arranged at the bottom in the water storage tank, and supports are fixed at four top corners of the upper surface of the base. Transverse plates are fixedly installed between the ends of the two adjacent supports on the long side, and a driving assembly is arranged between the two transverse plates. Yarns can be effectively cleaned and subjected to impurity removal through the arrangement of the water storage tank and the stirring assembly, the yarns can be further subjected to impurity removal through the cooperation of the driving assembly and the extrusion assembly, water in the yarns or adsorbed small floccules which are not easy to remove can be sucked through the draught fan, and the impurities in the yarns can be effectively removed. And suction objects are guided into the dust collection bag through the guide pipe to be collected, so that later centralized treatment is facilitated, the drying and impurity removing functions are further achieved, the environment of a workshop is further guaranteed, and secondary pollution of impurities to the yarn is also avoided.

The invention discloses a rice impurity removal device for agricultural machinery processing and an impurity removal method thereof. The rice impurity removal device comprises an impurity removal box, a second motor is fixedly connected to the interior of a groove, a second transmission shaft is in transmission connection to the upper end of the surface of the second motor, a rotating plate is fixedly connected to the upper end of the surface of the second transmission shaft, a spring is fixedly connected to the surface of one side of the interior of each buffer groove, and a sieve plate is fixedly connected to the end, away from the corresponding spring, of each connecting block. According to the rice impurity removal device, the groove is arranged, the second motor arranged inside the groove controls the second transmission shaft to rotate, so as to drive the rotating plate, a connecting pipe and a collecting hopper to rotate, the connecting blocks are slidably connected with the buffer grooves under the action of the springs, the connecting blocks drive the sieve plates to move left and right, then rice on the sieve plates is automatically sieved under the action of grids, impurities and particle dust are blocked on the sieve plates under screening of the sieve plates, the cost of manual screening can be reduced, the workload of workers is greatly reduced, and time and labor are saved.