111 results about "Metal adsorption" patented technology

The utility model relates to the technical field of textile detection, in particular to a textile metal detection device which comprises a working frame, a blanking opening is formed in the right portion of the lower end of the working frame, a demagnetization structure is movably connected to the right portion of the lower end of the working frame in an inserted mode, and the demagnetization structure is located on the lower side of the blanking opening. A metal blanking frame is placed on the lower right portion of the working frame and located under the blanking opening, a lower end face metal adsorption structure is fixedly connected to the left portion of the front end of the working frame, the right portion of the lower end face metal adsorption structure is located in the working frame, and an upper side metal adsorption structure is fixedly connected to the middle of the rear end of the working frame. According to the textile metal detection device disclosed by the utility model, the lower end face metal adsorption structure, the upper side metal adsorption structure, the X-ray detection chamber, the demagnetization structure, the blanking port, the metal blanking frame and other components are arranged on the working frame, and under the mutual cooperation of the components, metals contained in textiles can be efficiently detected.

The invention provides a compound containing a silicon group and an organic electroluminescent device thereof, and particularly relates to the technical field of organic electroluminescent materials. When the compound containing the silicon group is used as a covering layer material, the glass transition temperature is high, the thermal stability and the chemical stability are good, the light transmittance of a device can be improved, aging of the device is delayed, and therefore the service life of the device is effectively prolonged; and the compound has weak metal adsorption capacity, and can effectively inhibit the deposition of a metal electrode material on the surface of a nucleation inhibition layer when being applied to the nucleation inhibition layer, thereby improving the performance of the device. In conclusion, the silicon group-containing compound provided by the invention can be widely applied to the fields of panel display and the like, and has a good development prospect.

The invention provides a heterocyclic compound and an organic electroluminescent device thereof, and belongs to the technical field of organic electroluminescence. The heterocyclic compound provided by the invention has relatively weak metal adsorption capacity, can effectively inhibit metal from being deposited on the surface of a thin layer when being used as a nucleation inhibition layer material to be applied to the organic electroluminescent device, and can effectively improve the light emitting effect of the organic electroluminescent device when being used as a covering layer material, so that the light emitting efficiency of the organic electroluminescent device is improved. And the service life of the device is further prolonged. The heterocyclic compound and the organic electroluminescent device thereof have good application effect and industrialization prospect.

The invention belongs to the technical field of metal adsorption material preparation, and particularly relates to a preparation method of an attapulgite composite cellulose hydrogel material, which comprises the following steps: (1) uniformly dispersing acid modified attapulgite in water, then adding sodium alginate and polyvinyl alcohol, heating and stirring; (2) adding sodium carboxymethyl cellulose, and continuously stirring to obtain a mixed solution; and (3) injecting the mixed solution into a mold by using an injector, freeze-thawing, freeze-drying, immersing into a CaCl2 solution, cross-linking, washing for multiple times, and freeze-drying again to obtain the attapulgite composite cellulose hydrogel material. Sodium alginate, polyvinyl alcohol, sodium carboxymethyl cellulose and acid modified attapulgite in a proper proportion are matched with a multiple freeze drying method to construct a three-dimensional structure with multiple chemical adsorption, high specific surface area, long diffusion channel and abundant pores, so that the adsorption efficiency and the adsorption capacity of the composite material are improved, and various application requirements are met.

The invention provides a heterocyclic derivative and an organic electroluminescent device thereof, and belongs to the technical field of organic electroluminescence. The heterocyclic derivative provided by the invention has relatively weak metal adsorption capacity, when the heterocyclic derivative is used as a nucleation inhibition layer material to be applied to the organic electroluminescent device, deposition of metal on the surface of a thin layer can be effectively inhibited, and meanwhile, the heterocyclic derivative is used as a covering layer material to improve the optical coupling efficiency of the organic electroluminescent device, so that the organic electroluminescent device can be applied to the field of organic electroluminescent devices. And the luminous efficiency of the device is effectively improved. The heterocyclic derivative and the organic electroluminescent device thereof have good application effect and industrialization prospect.

The invention provides an organic electroluminescent device, and relates to the technical field of organic electroluminescence. According to the organic light-emitting device, the compound in the formula 1 serves as a nucleation inhibition layer material, has weak metal adsorption capacity and good film-forming property, can inhibit metal electrode materials from being deposited on the surface of the nucleation inhibition layer material, effectively improves the light transmittance of the organic light-emitting device, and further improves the performance of the organic light-emitting device. The nucleation inhibition layer material disclosed by the invention has a very good application prospect.

The invention discloses a method for separating zirconium and hafnium in a solution, and relates to the field of metal adsorption, separation and purification. According to the method for separating zirconium and hafnium in the solution, firstly, specific ligands such as persulfate and hydrogen persulfate are selected, zirconium and hafnium form a zirconium complex and a hafnium complex with larger size difference in a complexing mode, then under the acidic condition that the pH is smaller than or equal to 4.0, a specific porous material with the aperture being 1-50 nm is selected, and the zirconium and hafnium in the solution are separated. According to the method, a mixture of zirconium and hafnium complexes is adsorbed, separation of zirconium and hafnium in the zirconium and hafnium ion coexisting solution is achieved, the separation coefficient beta Hf / Zr can reach 0.84 or below or 1.49 or above, and the method is environmentally friendly, simple and convenient.

The waste material crushing treatment device for the building materials comprises a crushing shell, a discharging hopper is fixedly connected to the top of the crushing shell, a mounting shell is fixedly connected to the side wall of the crushing shell, scrapers are symmetrically and fixedly connected to the inner wall of the crushing shell, and a vibration plate is slidably connected to the interior of the crushing shell; a metal adsorption plate is installed at the bottom end of the vibration plate, and inclined plates are fixedly connected to the two sides of the vibration plate. According to the rubber material crushing device, a crushing roller is driven by two rotating gears to rotate, so that crushing blades crush rubber materials in multiple directions, and meanwhile, the crushing blades can be sequentially collected into a hollow block under the cooperation of a spring, a cam and a connecting rod under the rotation of the crushing roller; and in the collecting process, rubber attached to the crushing blades can be scraped off by the two sides of the hollow block, meanwhile, the surface of the crushing roller can be scraped off in combination with a scraper, and the ideal crushing effect can be achieved for rubber waste materials.

The present invention provides a sulfonic acid-modified colloidal silica which has excellent long-term stability of metal adsorption amount and is capable of suppressing the amount of residual abrasive grains on a polished metal surface after polishing and cleaning.　This sulfonic acid-modified colloidal silica contains silica particles, and is characterized in that: (1) the surfaces of the silica particles are modified with a sulfonic acid group; (2) the Cu ion adsorption amount of the silica particles is 5.00-110.00 µmol / g; (3) the ratio (Cu ion adsorption amount (µmol / g) / S content (µmol / g)) of the Cu ion adsorption amount to the S content of the silica particles is 0.50 or more; and (4) the rate of change over time of the Cu ion adsorption amount of the silica particles is 1.30 or less as measured by the measurement method described below. [Measurement method of the rate of change over time of the Cu ion adsorption amount of the silica particles] The sulfonic acid-modified colloidal silica is left to stand at 25°C for 3 months. The Cu ion adsorption amount (µmol / g) of the silica particles before standing and the Cu ion adsorption amount (µmol / g) of the silica particles after standing are measured and the rate of change over time of the Cu ion adsorption amount of the silica particles is calculated by the following formula. (Rate of change over time of Cu ion adsorption amount of silica particles) = (Cu ion adsorption amount (µmol / g) of silica particles after standing) / (Cu ion adsorption amount (µmol / g) of silica particles before standing)

The utility model relates to the technical field of waste optical disk recovery, in particular to a waste optical disk recovery processing device which comprises a device bottom plate, a classification processing mechanism is arranged above the device bottom plate, and the classification processing mechanism comprises a metal adsorption module and a plastic extraction module. The metal adsorption module comprises a mounting bottom plate, three groups of electromagnets and an adsorption plate, the mounting bottom plate is fixedly connected to one end above the device bottom plate, the three groups of electromagnets are arranged above the mounting bottom plate at equal intervals, the adsorption plate is fixed to the front ends of the three groups of electromagnets, and the adsorption plate generates magnetic attraction force after the three groups of electromagnets are electrified; the plastic extraction module comprises a draught hood and an air draft connecting pipe, the draught hood is fixed to the upper portion of the device bottom plate and located on one side of the metal adsorption module, the air draft connecting pipe is fixed to the upper end of the draught hood, and the space between the lower end of the draught hood and the device bottom plate is a scrap accumulation area.

The present invention provides a method and device for quickly milling large optical fairing parts. The device includes a numerically controlled spherical milling machine and optical spherical cover parts, including a vacuum adsorption fixture and an auxiliary clamping ring clamped on the numerically controlled spherical milling machine. The vacuum adsorption fixture is connected and positioned by the auxiliary clamping ring to the optical spherical cover parts, and the optical spherical cover parts are processed by a diamond grinding wheel. In the present invention, the optical spherical cover parts are tightly fitted with the tooling during the fine grinding process, the deformation is small, and the processing accuracy of large optical fairing parts is improved. The details are as follows: (1) A vacuum adsorption clamping method is selected, and the area of ​​the parts and the tooling fixture is large, which reduces the stress generated during the clamping of the parts and reduces the deformation of the parts during the milling process. (2) The spherical radius of the adsorption base 2 in the vacuum adsorption tooling is directly processed online on the optical numerically controlled milling machine, eliminating the repeated positioning error generated by the conventional metal adsorption tooling during the secondary clamping.

The invention relates to the technical field of dredge pumps, and discloses a dredge pump device for a cutter suction dredger, which comprises a dredge pump device, the dredge pump device comprises a dredge pump main body, the side surface of the dredge pump main body is provided with an output pipeline, the position of the dredge pump main body far away from the output pipeline is provided with an input pipeline, and the side surface of the input pipeline is provided with a conveying pipeline; an impurity removal mechanism is installed at the position, away from the input pipeline, of the conveying pipeline, a compressed air supply device is installed on the side face of the impurity removal mechanism, and a metal adsorption device is installed at the bottom of the impurity removal mechanism. By arranging the metal adsorption device, a worker can recover metal impurities conveniently, it is ensured that an electromagnet can conduct metal impurity adsorption work normally, and the situation that the metal impurities damage the smashing device and the mud pump device is avoided.

The utility model relates to the technical field of filtering, in particular to a metal micro-dust capturing filter which comprises a base, a dust suction box is arranged on one side of the base, a driving motor is arranged on the other side of the base, and a metal adsorption wheel structure is installed between the dust suction box and the driving motor. The metal adsorption wheel structure comprises a first rotating wheel, a second rotating wheel, an air inlet blocking tile, a metal tiny dust capturing brush and a metal tiny dust poking rod. According to the utility model, the battery diaphragm penetrating through the electrostatic adsorption wheel structure can be cleaned and adsorbed in a double-sided roller manner through the electrostatic adsorption wheel structure, so that the adsorption wheel can be better attached to the battery diaphragm for electrostatic adsorption of metal dust, and meanwhile, the metal dust which is electrostatically adsorbed to the adsorption wheel can be completely adsorbed at any time through the dust collection box; therefore, metal dust on the surface of the battery diaphragm can be thoroughly adsorbed, and the dust removal efficiency of the surface of the battery diaphragm is high.

The utility model discloses a fish scale classifying and screening machine which comprises a frame, a vibration screening mechanism is connected to the inner side of the frame, one end of the vibration screening mechanism is connected with a feeding port, a screen is arranged in the vibration screening mechanism, and a rapid dismounting and replacing mechanism is arranged between the screen and the vibration screening mechanism. A metal adsorption mechanism is arranged in the feeding hole; through the designed connecting groove, the connecting block, the guide groove, the guide block, the clamping groove and the elastic buckle, the screen and the vibration screening mechanism can be rapidly connected in a limiting mode or detached, meanwhile, the screen can be firmly locked after being installed in cooperation with the designed positioning hole, the threaded hole, the positioning rod and the anti-skid gasket, and therefore the screening effect is improved. And moreover, the anti-skid gaskets can also prevent the positioning rods from loosening after long-time vibration, and compared with the prior art, the screen mesh replacement work of the fish scale grading screening machine is greatly facilitated.

The utility model relates to the technical field of tail gas treatment, and discloses chemical tail gas collecting and recycling equipment which comprises a supporting table, and a recycling bin is fixedly connected to the surface of the supporting table conveniently. According to the chemical tail gas collecting and recycling equipment, through the arrangement of the collecting assembly, the vibrating assembly and the metal adsorption assembly, during use, chemical tail gas enters the recycling barrel through a gas inlet pipe, a collecting cloth bag in the recycling barrel filters dust in the chemical tail gas, the dust is left on the surface of the collecting cloth bag, a vibrating motor is started, and a rotating magnetic field can be generated; the magnetic field can cause unbalance of a cam, so that vibration is generated, a collecting cloth bag is vibrated, collected dust is beaten to a containing box below, a neodymium iron boron permanent magnet plate adsorbs metal particles possibly existing in the dust, the dust and the metal particles are distinguished, and the tail gas treatment efficiency is improved; and metal particles in the chemical tail gas can be recycled, so that the environment is protected.

The application provides a preparation method of a rare earth metal adsorption and separation resin and a resin extraction column. The preparation method comprises the following steps: adding an oil phase composed of styrene, divinylbenzene, a pore former and an initiator into an aqueous phase containing a dispersant and an inorganic salt to perform suspension polymerization, so as to obtain a white ball resin; performing phthalimide and hydrolysis on the white ball resin, so as to obtain a primary amine resin; performing reaction on the primary amine resin with chloroacetic acid and an alkaline medium, so as to perform carboxymethylation on part of the primary amine sites; and performing reaction on the obtained intermediate resin with phosphorous acid, formaldehyde and an acidic medium, so as to perform phosphonic acid methylation on the remaining part of the primary amine sites. The white ball resin is first subjected to amination, and then part of the carboxymethylation and part of the phosphonic acid methylation are sequentially performed, so that the carboxyl type chelation sites and the phosphonic acid type chelation sites are simultaneously reserved in the same resin bead, thereby being beneficial to improving the comprehensive adsorption performance and separation performance of the resin on the rare earth metal.

The utility model relates to a waste gas collecting device for waste gas treatment engineering, which comprises a collecting port, a metal adsorption box, a spraying barrel, a filter box and an exhaust barrel, the collecting port is arranged at one end of the metal adsorption box, and electromagnets are arranged on the inner walls of the left side and the right side of the metal adsorption box; an inclined collecting plate is arranged on the bottom surface of the metal adsorption box body, the inlet end of the spraying barrel is communicated with the other end of the metal adsorption box body, the filter box is arranged at the discharge end of the spraying barrel, the exhaust barrel is connected with the filter box, and a plurality of layers of filter elements are arranged in the filter box and are designed in a penetrating manner. The industrial waste gas treatment device is ingenious in designed structure, the collection opening, the metal adsorption box, the spraying barrel, the filter box and the exhaust barrel are designed and can be used for treating industrial waste gas, the metal adsorption box is specially designed, the electromagnet is arranged on the inner wall of the metal box, metal particles in the waste gas can be adsorbed through the electromagnet, and the metal particles are removed. And after power failure, the materials can fall into the metal collecting box through the inclined collecting plate.

1. Name of this design product: Multifunctional Ruler. 2. Application of this design: This design is used for a ruler with functions such as movable marking, level, drawing pen, protractor, and metal adsorption. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a plastic particle metal impurity filtering device which comprises a base and a filtering barrel fixedly arranged at the top of the base, a feeding hopper is installed at the top of the filtering barrel, a discharging pipe is installed at the bottom of the filtering barrel, a rotating shaft is rotationally arranged in the filtering barrel, and a discharging pipe is installed at the bottom of the rotating shaft. The outer wall of the rotating shaft is fixedly sleeved with a spiral separation auger, and the two ends of the rotating shaft both penetrate through and extend to the outside of the filtering barrel. Plastic particles are turned and stirred to do irregular movement under the action of a feeding hopper, a spiral separation auger, a push plate and an air pump, so that the plastic particles are separated from metal impurities, the metal impurities separated from the plastic particles are adsorbed away by a metal adsorption plate, and finally a drawer is pulled out. And the electric sliding rail drives the electric sliding block to drive the connecting rod, so that the metal impurities adsorbed on the metal adsorption plate are cleaned by the scraping plate and fall into the collecting box for subsequent treatment, and the filtered metal impurities are conveniently cleaned and collected.

The plane exhibition stand comprises a frame, an exhibition opening is formed in the frame, a magnetic metal adsorption plate is fixed to the top end of the exhibition opening, exhibition clothes hangers are evenly arranged at the bottom of the magnetic metal adsorption plate, permanent magnets are arranged in the centers of the top ends of the exhibition clothes hangers, and the permanent magnets are fixed to the exhibition opening. The display clothes hanger is fixed to the surface of the magnetic metal adsorption plate in an adsorption mode through a permanent magnet, the bottom of the frame is rotationally connected with a base table, Foma wheels are fixed to the four corners of the bottom of the base table, one end of the base table is fixedly connected with a push handle, and a fixing structure is arranged between the frame and the push handle. And the overall structure is stable and reliable. Meanwhile, the display stand has excellent reusability, the size can be reduced when the display stand is not used, the portability is further improved, the use cost of the display stand can be reduced while convenience is brought to a user, and stability and reliability of the whole display stand in various use scenes are guaranteed as a whole.

The utility model provides a degradable composite anti-rust film, which relates to the field of composite anti-rust films and comprises an outer layer and an inner layer, the outer layer is in composite connection with the inner layer, the outer layer comprises a first elastic layer and a second elastic layer, a base film layer is arranged between the first elastic layer and the second elastic layer, the inner layer comprises a loading layer, and the loading layer is arranged between the first elastic layer and the second elastic layer. The inner side of the loading layer is provided with loading holes, nanoscale anti-rust particles are arranged in the loading layer, the outer side of the loading layer is provided with a polyurethane elastic film, and the outer side of the polyurethane elastic film is provided with a waterproof film. The degradable composite anti-rust film solves the problems that a gasification molecular layer and a metal adsorption surface of an existing degradable composite anti-rust film are thin, and gasification diffusion duration is short.

The utility model provides a plasma machine metal particle adsorption control device, and belongs to the technical field of adsorption control devices. Comprising an operation box, rotating wheels rotationally installed at the bottom of the operation box, heat dissipation holes formed in the side surface of the operation box, an air inlet formed in the end of the operation box, a connecting shell fixedly connected to the side wall of the operation box, an operation panel fixedly installed on the surface of the connecting shell and a processing assembly fixedly installed in an inner cavity of the operation box. The metal particle capturing efficiency is remarkably improved through the detachable treatment barrel and the multi-stage adsorption structure, the adsorption effect on micron-sized particles is better, meanwhile, the airflow path design is optimized, efficient filtering is achieved through communication of the transmission pump and the air outlet in cooperation with the metal adsorption layer, it is ensured that airflow is evenly distributed, local overheating is avoided, and the service life of the air purifier is prolonged. In addition, the combined structure of the baffle and the limiting plate enables the installation and replacement of the treatment barrel to be more convenient, and the maintenance cost and the time cost are greatly reduced.

The invention provides a compound containing an anthracene group and an organic electroluminescent device thereof, and relates to the technical field of organic electroluminescent materials. The compound containing the anthracene group in the formula 1 has relatively weak metal adsorption capacity, good film-forming property and thermal stability, can effectively inhibit deposition of a metal electrode material on the surface of the compound and improve light transmittance, and is a nucleation inhibition layer material with excellent performance. In addition, the compound is used as a luminescent layer main body material for an organic electroluminescent device, can effectively improve the luminous efficiency of the device and prolong the service life of the device, and has a good application effect and a good industrialization prospect.

The utility model relates to the field of automobile technology, specifically to a lithium ore dressing tail water treatment device, comprising a box body, an outer wall of the box body is fixedly connected with an electric control device, a top cover is threadedly connected to the top of the box body, an outer wall of one side of the box body is rotatably connected with an inspection cover plate, an outer wall of the box body is provided with a movable supporting mechanism, a feed processing mechanism is fixedly connected to the top of the top cover, a bracket is fixedly connected to the top of the top cover, and a motor is fixedly connected to the top of the bracket. The utility model further ensures the centrifugal filtering effect, and can further filter the liquid thrown out by the centrifugation by arranging an inner wall filtering mechanism, and can filter the material by arranging a movable filtering mechanism to achieve the purpose of multi-stage filtering, and can control the magnetization of the electromagnetic plate by arranging the electric control device, so that the metal adsorption treatment can be carried out before the liquid is discharged, thereby ensuring the quality of wastewater treatment.

To provide a recovery system of a valuable metal using a functional material such as an adsorbent or an extractant that is capable of selective adsorption or concentration of an object valuable metal and circulation reuse of a valuable metal by a method such as elution reclamation and back extraction.SOLUTION: A valuable metal recovery system 1 is composed of a wastewater treatment apparatus 2 and a valuable metal recovery apparatus 3. The wastewater treatment apparatus 2 is composed of each water treatment unit including a tank 21, a flocculent settling tank 22, a membrane type filtration apparatus 23, and a valuable metal adsorption apparatus 24. This valuable metal adsorption apparatus 24 is attachably / detachably provided with an adsorbent column (functional material element). Each water treatment unit is unitized and can be mounted on one or more trailers T, transported to a discharge site of drainage water, and installed on the site. An adsorbent column after adsorption is conveyed to the valuable metal recovery apparatus 3, and at the valuable metal recovery apparatus 3, an object valuable metal is eluted or back-extracted from the functional material element filled with the adsorbent.SELECTED DRAWING: Figure 1

The invention belongs to the technical field of building materials, and discloses a metal adsorption type crack self-repairing material and a preparation method and application thereof.The metal adsorption type crack self-repairing material is of a shell-core structure, an inner core comprises granular foamed copper and a strength repairing component adsorbed in the granular foamed copper, and a shell is made of sulfur aluminum cement fiber mortar; the strength recovery component is prepared from the following raw materials in parts by mass: 50 to 200 parts of ordinary Portland cement, 150 to 300 parts of aluminate cement, 100 to 250 parts of slaked lime and 10 to 30 parts of zeolite powder; the sulphoaluminate cement fiber mortar is prepared from the following raw materials in parts by mass: 400 to 500 parts of sulphoaluminate cement, 6 to 10 parts of chopped fiber, 500 to 600 parts of fine sand, 0.5 to 1.5 parts of thickening time control agent, 1 to 2 parts of water reducing agent and 100 to 120 parts of water. All the components of the crack self-repairing material are linked with one another, when a cement-based material cracks, all the components participate in the reaction sequentially and hierarchically, the conditions needed by the hydration reaction can be rapidly constructed, gel substances can be rapidly generated, and strong self-repairing of cracks is achieved.

The invention provides an ocean polymetallic crusting mineralization prediction method. The method comprises the following steps: establishing a mineral-geochemical mapping model reflecting an occurrence mechanism of mineralization elements; constructing a multi-factor coupling metallogenic mechanism judgment model for comprehensively representing three types of control factors, namely a hydrodynamic condition, a seawater geochemical condition and a microbial action; the method comprises the following steps: establishing quantitative evaluation indexes corresponding to the biogeochemical process of each stage according to three microscopic growth stages of multi-metal crusting from colloid formation, metal adsorption to precipitation mineralization, and forming a microscopic mineralization stage evaluation system; coupling a mineral-geochemical mapping model, a multi-factor coupling metallogenic mechanism judgment model and a microscopic metallogenic stage evaluation system, and establishing a bidirectional simulation model; and inputting known crusting quality parameters, inverting the bidirectional simulation model and outputting deduced macroscopic geological environment characteristics, and screening a sea and mountain area with similar environment characteristics in a target sea area according to the macroscopic geological environment characteristics so as to delineate a favorable prospective area of the multi-metal crusting.

The invention provides an 8-hydroxyquinoline functionalized MOF (Metal Organic Framework) material as well as a preparation method and application thereof, and belongs to the field of scattered metal adsorption materials, the 8-hydroxyquinoline functionalized MOF material comprises a UiO-66-NH2 metal organic framework and an 8-hydroxyquinoline ligand grafted with an amino functional group in the UiO-66-NH2 metal organic framework. According to the invention, an 8-hydroxyquinoline ligand is introduced into a metal organic framework structure and is used as an adsorption site of gallium, so that the capability of capturing gallium is improved. The 8-hydroxyquinoline functionalized MOF material provided by the invention is obtained by cross-linking an 8-hydroxyquinoline ligand on a UiO-66-NH2 material through a cross-linking agent formaldehyde by adopting a hydrothermal synthesis method, and the synthesis method is simple. The 8-hydroxyquinoline functionalized MOF material (UiO-HQO) adsorption material provided by the invention can efficiently recover Ga in the vanadium titano-magnetite alkaline leaching solution, and the resource utilization rate is improved.

The invention relates to pipeline outer wall crawling equipment and method for variable pipe diameters and variable pipe wall thicknesses in the field of automation engineering. According to the outer wall crawling method facing the variable pipe wall thickness, pipeline outer wall crawling equipment needs to be designed, the equipment is used for a crawler belt walking on the outer wall of a metal pipeline and a plurality of electromagnets which are installed in the crawler belt, are arranged in the same ring with the crawler belt and are connected in series, and the electromagnets have metal adsorption force under the power-on condition; and all the electromagnets on the contact positions of the crawler belt and the pipeline provide adsorption force to the pipeline. According to the outer wall crawling method, the pipe wall thickness of the pipeline in the advancing direction of the crawler belt is detected, so that the current conveyed to the electromagnet is adjusted, the adsorption force is adjusted, the crawling equipment can crawl on different pipelines, and the technical problem that in the prior art, crawling on the pipelines with different pipe wall thicknesses is difficult is solved; and the crawling equipment can crawl outside pipelines with different pipeline wall thicknesses.

This utility model relates to the field of feed processing technology, specifically a feed raw material screening and impurity removal device, including a machine body. A circular cavity is provided in the middle of the machine body, and a top frame is fixedly installed on the top of the circular cavity. A feeding component is provided on the top frame, and a feed hopper is installed at one end of the top of the top frame. A metal adsorption component is provided on one side of the top of the top frame. A fixed cylinder is fixed in the middle of the bottom of the circular cavity, and mounting holes are opened in the middle of the fixed cylinder and the middle of the bottom of the machine body. A rotating shaft is rotatably connected to the inner wall of the mounting hole through a bearing. This utility model can combine mechanical crushing, air screening, and magnetic adsorption triple impurity removal mechanism, which can effectively remove various impurities such as metal, straw, and dust, improve the purity of feed raw materials, and is suitable for screening various feed raw materials such as soybeans and corn. It has a good crushing and separation effect on agglomerated raw materials, meeting the needs of modern feed production.