79results about How to "Reduce impurity" patented technology

The invention relates to the technical field of cable winding, in particular to a cable winding device for aviation cable processing, which comprises a cable winding device for aviation cable processing, and a cleaning mechanism for cleaning a cable is arranged outside the cable winding device; the cleaning mechanism comprises a driving structure, a water conveying structure and a cleaning structure which are fixedly mounted on the mounting plate; the driving structure comprises a first wire conveying wheel and a second wire conveying wheel which are horizontally arranged; the water conveying structure comprises a vertically-arranged pump shell and a transversely-arranged valve pipe. According to the cable winding device, a cable can be cleaned during winding, meanwhile, static electricity of the cable is eliminated, overall stable winding of the cable is effectively guaranteed, winding work of the winding device on the cable is facilitated, friction force generated in the conveying process of the cable provides rotating power for the first cable conveying wheel and the second cable conveying wheel, the power transmission mode is simple and direct, and the power transmission efficiency is improved. Extra energy input is not needed, and the energy consumption cost is reduced.

The invention belongs to the technical field of pulp paper production, and particularly relates to a preparation method of low-dirt-degree and high-strength bleached sulfate mixed broadleaf wood wet wood pulp and pulp board. According to the invention, the acacia mangium chips and the eucalyptus chips are mixed and prepared, so that a foundation is laid for obtaining subsequent high-quality products; mixed wood chips are pre-impregnated in impregnation liquid with the effective alkali content being 4-8 g / L, so that the wood chips can react quickly in the cooking stage, and resin in broadleaf wood is eliminated; the wood chips are cooked, knotted, screened and washed, so that impurities in the slurry can be eliminated again; and by performing oxygen delignification treatment and bleaching on the coarse pulp, the quality of the pulp is improved. Therefore, the mixed broadleaf wood wet wood pulp and wood pulp board prepared by the preparation method disclosed by the invention are excellent in various indexes, low in dust degree, high in tension resistance, tear-resistant and breakage-resistant, and high-quality mixed wood pulp is provided for customers of paper for daily use.

The invention relates to the technical field of road rollers, in particular to an expressway reconstruction and extension road roller and a use method. Comprising a road roller body and a roller arranged on the road roller body, a roller scraping mechanism is arranged on one side of the roller, and a scraper cleaning mechanism is arranged on one side of the roller scraping mechanism; the roller scraping mechanism is rotationally connected with the road roller main body through a hydraulic rod assembly, the roller scraping mechanism is used for scraping impurities on the surface of a roller, and the scraper cleaning mechanism is used for cleaning the impurities on the surface of the roller scraping mechanism. Through cooperation of the roller scraping mechanism and the scraper cleaning mechanism, when a roller rolls, the roller scraping mechanism can scrape impurities attached to the surface of the roller, meanwhile, a stepping motor of the scraper cleaning mechanism drives a driving lead screw, then a cleaning scraping rod reciprocates along the surface of a scraper, and it is ensured that the impurities on the surface of the scraper are cleaned; the impurity removal effect of the roller scraping mechanism is ensured, and the use effect of the road roller is ensured.

The invention relates to the technical field of lithium battery recovery, in particular to a pole piece recovery system and a pole piece recovery method. The pole piece recovery system comprises a crusher, a first crusher, a first screening device, a second crusher, a second screening device and a first hopper which are connected in sequence, a positive electrode discharge port and a negative electrode discharge port are formed in the first hopper, and the positive electrode discharge port is sequentially connected with a first grinder and a rocking sieve; a rocking sieve coarse material discharge port, a rocking sieve intermediate material discharge port and a rocking sieve fine material discharge port are formed in the rocking sieve, the rocking sieve intermediate material discharge port is sequentially connected with a second grinder and a second hopper, the second hopper is connected with the first hopper through a negative pressure pipeline, and a negative pressure fan is arranged on the negative pressure pipeline; the cathode discharge hole is connected with a copper hopper; according to the pole piece recovery method, the positive pole piece or the negative pole piece is recovered by using the pole piece recovery system. According to the invention, the positive plate and the negative plate can be recycled respectively, and the universality is high; the recycling rate of the positive plate can be improved.

The invention discloses an impurity removal mechanism of a cyperus esculentus harvester and a method thereof, and relates to the technical field of cyperus esculentus harvesting.The mechanism comprises a supporting bottom frame, and two supporting plates are arranged above the supporting bottom frame and connected with the top end of the supporting bottom frame. Through cooperative arrangement of the screening cylinder, the annular rolling groove, the supporting rolling wheel, the gear ring, the power motor, the first gear, the feeding port, the discharging pipe and the sealing door, the mechanism is installed on the cyperus esculentus harvester, cyperus esculentus is discharged into the screening cylinder through the feeding port, the power motor works to drive the first gear and the gear ring to rotate, and the screening cylinder is driven by the discharging pipe to rotate. According to the cyperus esculentus harvester, the screening barrel can rotate between the two sets of supporting rollers, impurities such as soil on the surfaces of cyperus esculentus are screened, the cyperus esculentus harvester is provided with the impurity removing mechanism, the harvested cyperus esculentus can be subjected to impurity removing treatment, the subsequent impurity removing procedure of the cyperus esculentus is reduced, and the cyperus esculentus harvesting efficiency can be effectively improved.

The efficient raw material cleaning equipment for improving the whiteness of the white cement clinker comprises a bottom plate, a supporting assembly is arranged on the top face of the bottom plate, a sleeve is arranged on the top face of the supporting assembly, a flushing assembly is connected to one side of the sleeve, and a water circulation assembly is connected to the side, away from the sleeve, of the flushing assembly; the second waste pool is arranged at the bottom of the water circulation assembly, one side of the water circulation assembly is in through connection with the interior of the sleeve, a rolling washing assembly is inserted into the sleeve, one side of the flushing assembly is inserted into the rolling washing assembly, and a rolling pushing assembly is slidably connected to the top face of the supporting assembly and is attached to the outer wall of one side of the rolling washing assembly in a rolling mode. White cement raw materials are put into the rolling washing assembly to be washed, the rolling pushing assembly is driven to horizontally move on the track plate, the rolling washing assembly can conveniently drive the cleaned white cement raw materials to be pulled out of and inserted into the sleeve, and therefore the cleaning efficiency of the white cement raw materials is improved.

The invention discloses a tip cutting and sugarcane tip prediction method for a sugarcane harvester, and the method comprises the steps: (1), adjusting the initial position of a camera after the position of the camera is obtained, and adjusting the initial position of the camera to one side without sugarcane interference; (2) obtaining sugarcane tip position data through a camera, processing the data collected in a camera picture by using a sugarcane tip identification model, and preliminarily judging whether a cutter head is too high or too low by using the obtained sugarcane tip position information; (3) performing control coarse adjustment on a tip cutting device through a control algorithm of a single-chip microcomputer according to the position information of the sugarcane tips; and (4) acquiring the position of the sugarcane tip by using a camera, acquiring accurate sugarcane tip position information from the data through a sugarcane tip identification model, judging according to the sugarcane tip identification model and a prediction result, and finely adjusting the tip cutting device through a control algorithm of a single chip microcomputer. According to the method, the impurity rate and the loss rate of the sugarcane harvester during tip cutting can be reduced, and meanwhile a large amount of manual labor is saved.

The utility model discloses an impurity removing device for a gasoline engine type peanut picker, which comprises a peanut picker body, a first collecting box for collecting peanuts is arranged on the peanut picker body, a material conveying mechanism is arranged at the side end of the peanut picker body, the material conveying mechanism is communicated with the inside of the first collecting box through a first connecting pipe, and a second connecting pipe is arranged at the side end of the first collecting box. The peanut picker comprises a peanut picker body, an impurity removal box is installed on the peanut picker body, two impurity removal grooves are formed in the impurity removal box, filter screen plates are installed at the positions, corresponding to the two impurity removal grooves, of the bottom end of the impurity removal box, a first rotating shaft is rotationally connected to the interior of the impurity removal box, and a first motor for driving the first rotating shaft to rotate is installed on the impurity removal box; and discharging openings are formed in the positions, corresponding to the two impurity removing grooves, of the side end of the impurity removing box, and a box cover is installed at the top end of the impurity removing box, so that peanuts in the impurity removing grooves are conveniently stirred, the peanuts are prevented from being accumulated on the filter screen plate, and the peanut impurity removing effect is guaranteed.

The utility model discloses an anode oxidation groove processing post cleaning device belongs to the technical field of cleaning device. Including fixed mechanism, first cleaning mechanism, second cleaning mechanism, fixed mechanism includes fixed base, and the lateral surface of fixed base is provided with cavity, and the top surface of fixed base is installed with a pair of connecting plate, and a plurality of first fixed frame, a plurality of second fixed frame are established between a pair of connecting plate, and first fixed frame and second fixed frame fixed aluminum plate, and first cleaning mechanism includes a plurality of installation in the top surface of fixed base branch pipe, and a plurality of branch pipes are located between first fixed frame and second fixed frame, and the outside of branch pipe is installed with a plurality of high pressure nozzles, and first cleaning mechanism still includes a plurality of installation in the pipeline in cavity, and branch pipe and pipeline are connected, and the water pipe is connected between a plurality of pipelines, and the water pipe is connected through water pump and water source, and the top surface of fixed base is provided with a plurality of and the opening hole of cavity intercommunication, and second cleaning mechanism utilizes air to clean aluminum plate.

The utility model discloses regenerated cotton impurity removal equipment, which relates to the technical field of treatment equipment and comprises a treatment barrel, a motor is fixed at the bottom end in the treatment barrel through a support frame, a transmission shaft is fixed at the output end of the motor, and a plurality of stirring rods are fixed on the outer wall of one end, far away from the motor, of the transmission shaft. Air distributing pipes are arranged on the four sides of the motor, a main air pipe is connected to the bottoms of the air distributing pipes, a plurality of air spraying pipes are arranged on the tops of the air distributing pipes, a material groove is formed in one side of the treatment cylinder, and after regenerated cotton enters the treatment cylinder, the motor works and then drives a plurality of stirring rods to rotate through a transmission shaft; the stirring rod can be rotated to hit and pull into block-shaped and lump-shaped cotton lumps and open the cotton lumps, and then wind blowing is performed under the action of the main air pipe, the branch air pipes and the air spraying pipes, so that doped dust particles and impurities can fall off, and the impurity rate in later-period regenerated cotton is greatly reduced.

The invention discloses a step-by-step impurity removal method for impurity-containing gold-loaded resin, and belongs to the technical field of mineral processing. The method specifically comprises the following steps: mixing the impurity-containing gold-loaded resin into slurry, putting the slurry into a small-sized thickener, stirring, standing, and removing fine light flocculent impurities on the upper layer; the impurity-removed gold-loaded resin is subjected to size mixing and placed in a vibrating spiral chute, large-specific-gravity coarse-particle colloidal impurities are removed, then the impurity-removed gold-loaded resin is placed in a multi-layer wet-type vibrating screening machine, pine needles, wood chips and other impurities with large particle sizes are removed through an upper-layer large-aperture vibrating screen, fine-crushed humus impurities are removed from an upper-layer undersize material through a lower-layer small-aperture vibrating screen, and the gold-loaded resin is subjected to impurity removal; the undersize is impurity-removed gold-loaded resin; all the obtained impurities are combined and checked and screened through a suspended vibration conical surface sorting machine, coarse particle products are impurities, and a small amount of fine particle products are resin. Aiming at the characteristics of different impurities in the gold-carrying resin, the invention develops a unique step-by-step impurity removal process, and high-quality gold extraction raw materials can be provided for resin ore pulp process enterprises.

The utility model discloses a poultry breeding factory capable of improving the breeding environment, which relates to the technical field of poultry breeding and comprises an air purification device located in a workshop. A breeding room is arranged on one side of the working room; one end of the air purification device is fixedly connected with an air supply main pipeline and an air return pipeline, and the other end is fixedly connected with an air inlet pipeline and an exhaust pipeline; the ends, away from the air purification device, of the air supply main pipeline and the air return pipeline communicate with the breeding room. During use, outside air enters the air purification device through the air inlet pipeline, purified air enters the two auxiliary air supply pipelines through the air supply main pipeline and then is discharged into the breeding room through the multiple air outlets, and meanwhile the air return pipeline can suck contaminated air in the breeding room into the air purification device. And then the air is exhausted to the outside through the exhaust pipeline, so that air replacement in the breeding room is completed, and a good environment is kept in the breeding room.

The invention relates to the technical field of medical application, in particular to a liver-targeted chemotherapeutic drug nano-micelle preparation method, a chemotherapeutic drug and application, and the preparation method comprises the following steps: S100, preparing pluronic-succinimide formate; s200, preparing a pluronic-polyethyleneimine copolymer; s300, preparing divinyl sebacate; carrying out enzymatic synthesis on the Pluronic F127-SE; the preparation method comprises the following steps: preparing a Pluronic F127-C8-GalNAc nano micelle; and preparing the GalNAc (at) LFT-MMs / siCOP1 compound. The preparation method disclosed by the invention is beneficial to rapidly preparing the nano-micelle with multiple effects of active targeting, chemotherapy and gene therapy.

The invention provides an automatic welding platform for a freezer shell, and relates to the technical field of automatic welding platforms, the automatic welding platform comprises a conveying platform, and a first welding station, a second welding station and a filling station are sequentially arranged above the conveying platform in the conveying direction; a filling assembly is arranged on the filling station; the corner butt joint piece comprises a corner plate, a middle connecting block, an outer arc block and an outer baffle; the first double-seam welding assemblies are symmetrically arranged on the two sides of the first welding station, and each first double-seam welding assembly comprises a first position adjusting component, a first laser welding gun, a first grabbing component, a first storage component and a first welding gun cleaning component; a second double-seam welding assembly; the reinforcing cover and the corner butt joint pieces are reserved outside the freezer inner container, the butt joint efficiency and the butt joint strength of the outer decoration plate can be effectively improved, the whole welding process is automatically completed, the welding efficiency is high, and manual positioning is not needed.

The utility model discloses a long fiber carding device, and relates to the technical field of bast fiber processing equipment. The hemp fiber carding device aims to solve the problems that in the prior art, a traditional hemp fiber carding device adopts a large number of knife rests, fibers are prone to being damaged when cleaned, and the fiber carding effect is not ideal. The fiber carding device comprises an input clamping belt wheel, a clamping belt slide way, a first clamping belt, a reversing belt wheel, a second clamping belt, an output clamping belt wheel and four fiber carding devices arranged in a roller shell. The reversing belt wheel is arranged between the second carding roller and the third carding roller, the input clamping belt wheel is arranged on the outer side of the first carding roller, and the output clamping belt wheel is arranged on the outer side of the fourth carding roller. The bast fiber processing device is used for bast fiber processing.

The utility model provides a humus soil separation treatment system, which is used for resourceful treatment of humus soil and comprises a feeding section, a primary screening section, a primary separation section and a secondary separation section which are connected in sequence, the primary screening section comprises a primary screening magnetic separator, an inlet of the primary screening magnetic separator is connected with the feeding section, and the primary screening magnetic separator is used for receiving humus soil and separating and storing magnetic substances after magnetic separation; the remaining materials are conveyed to the first-stage separation section; the primary separation section comprises a jigger and a shaking table, excess materials of the primary screening section enter the jigger, surface-layer large materials, bottom-layer concentrated materials and tailings are separated, the tailings are continuously conveyed to the secondary separation section, the bottom-layer concentrated materials are conveyed into the shaking table to be treated, and the surface-layer large materials are treated to separate precious metal; the secondary separation section comprises a drum screen, a vortex sorting machine and a precipitation and filtration device, after the tailings enter the drum screen, solid matters and sand-containing water are separated out, the solid matters are input into the vortex sorting machine for sorting, and the sand-containing water enters the precipitation and filtration device for separation treatment. According to the humus soil recycling device, humus soil is recycled, and the reduction efficiency of the humus soil is improved.

This invention provides a low-bud-damage sugarcane peeling machine to solve the technical problems of high bud damage and sugarcane stem damage caused by traditional centrifugal peeling machines during the peeling process. The sugarcane peeling machine of this invention includes a frame and, sequentially arranged along the sugarcane conveying direction, a leaf-crushing pretreatment component, a conveying component, an input roller, a tension-type peeling component, and an output roller. Support rollers on the frame provide fixed support for each component. A fan is installed above the peeling roller of the tension-type peeling component. The leaf-crushing elements of the leaf-crushing pretreatment component flexibly strike the sugarcane seed, leaves, and sheaths, causing them to fall. After being conveyed by upper and lower conveyor belts, they are fed into the peeling area by the input roller. The airflow from the fan blows the sugarcane leaves into the working area of ​​the peeling roller. The peeling elements on the surface of the peeling roller are spirally arranged, and the leaves are peeled off through tension. Finally, the sugarcane seed is discharged by the output roller. This invention achieves low sugarcane stem damage and bud-damage rates, controls the sugarcane seed impurity rate to below 3%, and has high peeling efficiency and a compact structure, making it suitable for large-scale sugarcane peeling.

The utility model relates to the field of emulsion processing, in particular to a filtering device for processing moisturizing emulsion, which comprises a processing cavity and an outer ring sleeve, the outer ring sleeve is arranged at the inner bottom of the processing cavity, a first filter screen is arranged at the inner side end of the outer ring sleeve, a second filter screen is arranged above the first filter screen, and meshes of the second filter screen are larger than those of the first filter screen. A right vertical cavity is formed in the right end of the outer side wall of the machining cavity, an adjusting motor is installed at the bottom in the right vertical cavity, an adjusting lead screw is installed at the output end of the adjusting motor, an adjusting sliding block is installed on the outer side wall of the adjusting lead screw, and the adjusting sliding block is connected with the upper end face of the outer ring sleeve through a right position frame. A plurality of filter screen structures are adopted, the impurity removal effect on the emulsion is ensured, an adjusting motor structure is adopted, the filter screens can be driven to move, impurities on the first filter screen and the second filter screen can be conveniently cleaned, and mesh blockage is avoided.

This invention relates to the field of plastic film recycling machinery, specifically to a residual plastic film recycling machine with a multi-stage pretreatment structure for the film surface. The machine includes a traction frame, with a film-lifting mechanism bolted to the front side inside the traction frame. Two support plates are welded to the top of the traction frame, and a film-unfolding mechanism and a film-pushing roller are respectively arranged between the two support plates. The film-pushing roller is located at the front end of the film-unfolding mechanism and above the film-lifting mechanism. A guide arc plate is fitted at the front end of the film-pushing roller. A collection frame is bolted to the rear end of the traction frame, and a guide plate is bolted to the rear end between the two support plates. A spiral soil collector is provided at the rear end of the guide plate for cooperation with the guide plate. The film-unfolding mechanism includes a driving roller and a driven roller rotatably connected between the two support plates. This invention provides a residual plastic film recycling machine with a multi-stage pretreatment structure for the film surface, which has the advantages of improving the film-soil separation effect and the cleanliness of the recycled residual plastic film.

The utility model relates to the technical field of boron smelting raw material metal impurity removal, and discloses a boron carbide smelting raw material metal impurity removal device which comprises a box body, a box cover plate is arranged at the upper end of the box body, a supporting column is fixedly connected to the top of the box cover plate, and a fixing plate is fixedly connected to the top of the supporting column. A through groove is formed in the inner wall of the fixing plate, and a discharging hopper is fixedly connected to the bottom of the fixing plate. The electromagnet is started, then raw materials are poured into the discharging pipe through the discharging hopper, when metal impurities in the raw materials fall to the position of the electromagnet, the metal impurities in the raw materials are adsorbed through a magnetic field generated by the electromagnet, and therefore the metal impurities in the raw materials are removed, and the raw materials are discharged outwards through the discharging pipe. The raw material impurity removing efficiency is improved, the follow-up processing quality of the raw materials is improved, the adsorbed metal impurities fall off by closing the electromagnet, the metal impurities can be discharged, and the operation convenience during use is improved.

This utility model discloses a system for removing impurities from carbon-containing chlorosilanes and recovering chlorosilanes, comprising: a first distillation column for receiving and concentrating carbon-containing chlorosilanes; a first adsorption and reaction device connected to the first distillation column, the first adsorption and reaction device being filled with a metal adsorbent material and equipped with a silicon tetrachloride feed pipeline; a second adsorption and reaction device connected to the first adsorption and reaction device, the second adsorption and reaction device being filled with a methyldichlorosilane adsorbent material; a second distillation column connected to the second adsorption and reaction device; and a third distillation column connected to the second distillation column. This utility model can adsorb and concentrate metal impurities in carbon-containing chlorosilanes as a catalyst for the carbon removal reaction, effectively avoiding deactivation and failure caused by metal impurities encapsulating the resin catalyst, improving the conversion rate of methyldichlorosilane, and effectively avoiding the disproportionation reaction of silicon trichloride in the presence of the resin catalyst, thereby improving the carbon removal efficiency and chlorosilane recovery efficiency.

The utility model discloses an adjustable vibration classifying screen for rice processing, which relates to the technical field of grain processing and comprises a support, a screening box is rotatably connected onto the support, a feed port and a discharge port are respectively arranged on two sides of the screening box, two screening plates are fixedly mounted in the screening box, and the feed port is communicated with the discharge port. A collecting box is placed at the bottom end of the support, and an adjusting assembly capable of adjusting the diameter of screen holes is assembled on the screening plate. By assembling the adjusting assembly capable of adjusting the diameter of the screen holes on the screening plate, the limitation caused by fixation of the screen holes of an existing grading screen is effectively solved, firstly, the size of the screen holes can be flexibly adjusted according to the size of rice so that the size of the screen holes can be matched with the height of eight-treasure rice in the Guangdong county, and the eight-treasure rice can smoothly pass through by increasing the diameter of the screen holes; by reducing the diameter of the sieve pores, the eight-treasure rice and impurities can be accurately separated, and the screening precision is remarkably improved.

The utility model relates to an on-line cleaning device, in particular to a cable surface on-line cleaning device which comprises a base, a first protective shell, a steam generator, a first conveying pipe, a second conveying pipe, a liquid storage tank, a first partition plate and the like. A first protective shell is installed on the top of the base, a first partition plate is installed in the first protective shell and divides the interior of the first protective shell into a front space and a rear space, the space on the front side in the first protective shell is a liquid storage tank, a steam generator is arranged in the space on the rear side in the first protective shell, and a second conveying pipe and a first conveying pipe are arranged on the left side and the right side of the steam generator respectively. A relatively closed space is arranged in the device, and a steam component is arranged in the space to clean the surface of a continuously conveyed cable, so that compared with conventional offline cleaning equipment, the cleaning can be synchronously completed in the operation process of a production line, the production flow does not need to be interrupted, and meanwhile, the production efficiency is improved. Stubborn dirt and impurities on the surface of the cable are effectively removed.

The utility model relates to the technical field of pearl extracting solutions, in particular to a pearl extracting solution concentration device which comprises a base, a heating concentration tank is fixed at the top of the base, a liquid inlet pipe is communicated with the top of the heating concentration tank, a filter frame is fixed in the heating concentration tank, a filter screen is clamped in the filter frame, and a liquid outlet pipe is communicated with the liquid inlet pipe. A rotatable rotating rod is arranged in the heating concentration tank, a circular truncated cone is fixedly sleeved outside the rotating rod, a stirring rod is fixed at the bottom of the circular truncated cone, and the end part of the heating concentration tank is communicated with a liquid outlet pipe. According to the concentration device for the pearl extracting solution, through rotation of a stirring shaft and a stirring rod, the extracting solution in the concentration tank is fully stirred, the interior of the tank is in a flowing state, it is guaranteed that the content of the pearl solution is stable, the extraction effect is improved, and the pearl extracting solution is filtered in the concentration process through shaking of a filter screen; impurities in the extracting solution can be removed, and the concentration quality of the cooking extracting solution is improved.

The present application belongs to the technical field of intelligent control of cotton processing, and discloses a machine-harvested cotton processing quality state recognition and cleaning parameter decision method and system. The method comprises the following steps: acquiring multi-dimensional quality data such as impurity content, moisture regain, impurity particle number and cotton fiber damage degree, and performing normalization preprocessing; determining the processing quality state grade through a machine learning model or a threshold comprehensive score; outputting a full-process optimized cleaning parameter set including the seed cotton cleaning and lint cleaning links; issuing the parameters to an execution mechanism control device for operation; acquiring real-time quality feedback data after cleaning, and triggering online adaptive correction when the deviation exceeds the preset range; and updating the decision model rule parameters using the gradient descent method or the reinforcement learning algorithm; realizing end-to-end deep fusion of quality state recognition and cleaning parameter decision, having multi-parameter collaborative optimization and closed-loop self-learning capabilities, improving the consistency and intelligent level of machine-harvested cotton processing, and reducing the risk of fiber damage.

The utility model discloses a barbed nail roller for a seed cotton cleaning machine, which belongs to the technical field of seed cotton cleaning and comprises a barbed nail mechanism and a barbed roller tubular shaft, and the barbed nail mechanism comprises a first barbed nail component, a second barbed nail component and a third barbed nail component. The first barbed nail assembly, the second barbed nail assembly and the third barbed nail assembly each comprise a barbed nail and a barbed nail supporting piece, and the barbed nail supporting piece is arranged at one end of each barbed nail. The barbed nail supporting piece is fixedly connected with the barbed nail, the bottom face of the barbed nail supporting piece is an arc face, and the bottom face of the barbed nail supporting piece is attached to the surface of the licker-in tubular shaft. According to the barbed nail roller, the strength of barbed nails on the barbed nail roller can be improved, the barbed nails are prevented from falling down or falling off in the using process, impurities can be prevented from being clamped on the barbed nail roller, and the impurity discharging effect and the impurity discharging efficiency are guaranteed.

The invention discloses a nylon 66 melt impurity removal process which comprises the steps of raw material pretreatment, solvent extraction, airflow impurity removal, catalyst impurity removal, vacuum degassing, centrifugal separation, physical filtration, removal of tiny solid impurities in a melt through a filter screen, cooling and quality detection. Impurities in the nylon 66 melt are comprehensively removed in a physical mode, a chemical mode and other modes, low-molecular-weight impurities, oxides, unreacted monomers and catalyst residues in the nylon 66 melt can be remarkably removed, and the purity of the melt is improved.

This utility model discloses a high-magnetic impurity removal device for quartz sand purification, relating to the field of quartz sand impurity removal technology. The device includes a fixed frame with a magnetic separator box fixedly connected to it. A feed hopper is fixedly connected to the upper end of the magnetic separator box, and a material outlet and an impurity outlet are located at the lower end. A material distribution mechanism is provided in the feed hopper. A material spreading component to prevent quartz sand accumulation is located below the feed hopper in the magnetic separator box. A magnetic separation component for multiple impurity removal of the quartz sand is located at the lower end of the material spreading component. By setting the material spreading component, the quartz sand can be evenly spread onto the magnetic separation component, enabling comprehensive magnetic separation and ensuring effective impurity removal. Three magnetic rollers in the magnetic separation component allow for three-stage magnetic separation of the quartz sand, resulting in better magnetic material separation and ensuring the quality of the sand material's magnetic separation, thus improving the purity of the high-purity quartz sand.

The invention belongs to the technical field of combine harvesters, and discloses an independent header adaptive profiling control system based on multi-sensor fusion, which comprises a sensing module, an execution module and a control module, and is characterized in that the sensing module and the execution module are electrically connected with the control module; the sensing module comprises high-precision angle sensors installed on the left side and the right side of the header, and each high-precision angle sensor is hinged to the header through a mechanical rotating arm and a tension spring assembly and used for converting the vertical displacement and the inclination angle of the header relative to the ground into electric signals. Through deep cooperation of sensing, execution and control technologies, the crop loss rate is reduced by 30%-50%, the impurity rate is remarkably reduced, the method is particularly suitable for low-stubble harvesting operation of soybeans, oilseed rapes and the like, the operation quality and economic benefits of a combine harvester are greatly improved, and agricultural machinery equipment is promoted to be upgraded to high-end intelligence.

Disclosed in the present invention is a wafer position detection device. The wafer position detection device comprises a mounting seat, a trigger assembly and a fluid pressure measurement assembly. The trigger assembly arranged on the mounting seat comprises a top cover that protrudes out of a surface of the mounting seat and is used for supporting a wafer, and a fluid conveying pipeline arranged in a hollow cavity formed by an inner wall of the top cover, wherein when a wafer is arranged on the top cover, the top cover can move close to the fluid conveying pipeline to block a fluid conveying port of the fluid conveying pipeline; and when no wafer is arranged on the top cover, the top cover can move away from the fluid conveying pipeline under the action of a fluid pressure to be in communication with the fluid conveying port of the fluid conveying pipeline. The fluid pressure measurement assembly is in indirect contact with a wafer by means of the top cover, so as to indirectly detect the in-place condition of the wafer, and therefore, the problem of the influence on the yield caused by defects generated on the surface of a wafer due to direct contact is prevented. Compared with an optical sensor, the wafer position detection device can realize in-place detection of a wafer which is sensitive to illumination, and has a wide application range, and the universality of the device is improved.