1019 results about "Material Separation" patented technology

The invention discloses a solid-phase sintering repair method of a waste lithium iron phosphate battery material, and relates to the related field of battery recovery and repair, and the method comprises the following steps: disassembling the waste lithium iron phosphate battery material, taking out a battery positive plate, cleaning, drying and separating a positive material; a spectrograph is adopted for component analysis, the element component content is determined, and raw material adding and supplementing are conducted based on the deviation value of the theoretical element proportion; based on the characteristic information, sectional type sintering scheme analysis is conducted, and solid-phase sintering repair scheme parameters are obtained; the mixed lithium iron phosphate powder is pressed into a sheet shape and placed in sintering equipment for solid-phase sintering repairing treatment, and a repairing sample is obtained; and obtaining test performance parameters according to a battery application detection standard, and performing repair compensation control on the repair scheme parameters. The technical problem that the repairing effect is uncontrollable due to lack of precise analysis and targeted optimization in existing solid-phase sintering repairing is solved, and the technical effects of efficient repairing and performance improvement are achieved.

The invention discloses a civil construction waste crushing and recycling device, and particularly relates to the technical field of waste recycling and transportation, the civil construction waste crushing and recycling device comprises a transportation material channel, a supporting plate, a sliding frame and a positioning synchronous transportation mechanism; the positioning and synchronous conveying mechanism comprises a screw rod, a gear motor, a moving distance sensor, a sleeving block, a conveying box, two frame plates, a pushing electric cylinder, a pushing block, a discharging plate, a pushing electric cylinder, a pushing strip, a linkage strip and a pushing plate. The device further comprises a positioning material separation conveying mechanism and a conveying state processing assembly. By means of the positioning synchronous conveying mechanism, the conveying and stacking conditions of the crushed civil construction waste can be known in time, and the crushed civil construction waste which is stacked ultrahigh can be efficiently conveyed in time, so that the problems that the conveying and stacking conditions of the crushed civil construction waste are difficult to know in time, and the conveying efficiency of the crushed civil construction waste is improved are solved. And the crushed civil construction waste which is accumulated in an over-limit mode is difficult to efficiently transport in time.

The utility model relates to the technical field of asphalt pavement recycled material separation equipment, in particular to pavement asphalt recycled material fine separation equipment which comprises a laminated frame and a raw material bin arranged on one side of the laminated frame. A feeding belt conveyor is arranged between the raw material bin and the aggregate elevator, the discharging end of the feeding belt conveyor is connected with a pretreatment linear vibrating screen, the pretreatment linear vibrating screen is provided with a large-particle-size discharging port and a medium-particle-size discharging port, and a pretreatment flexible double-roller crusher is arranged below the large-particle-size discharging port; a vertical shaft type stripping machine, a first-stage linear vibrating screen, a second-stage high-frequency probability screen and a finished product belt conveyor are sequentially arranged on the laminated frame from top to bottom. The pavement asphalt reclaimed material fine separation equipment disclosed by the utility model can be used for performing multi-stage fine screening on asphalt pavement old materials, and is beneficial to ensuring the stable quality of asphalt mixtures during subsequent processing and reutilization.

The utility model provides a separation device for construction waste recycled aggregate, which relates to the technical field of construction waste recycled aggregate and comprises a screening frame, a light material separation mechanism is arranged above the screening frame and comprises an eccentric wheel and a fixed box fixedly connected to the inner wall of the screening frame, and the eccentric wheel is arranged on the fixed box. An inclined plate is fixedly connected to the inner wall of the fixed box, a swing plate is hinged to the bottom face of the inclined plate, and the eccentric wheel is matched with the swing plate; the inner wall of the fixed box is fixedly connected with a breathable plate, and the bottom face of the breathable plate is fixedly connected with a first fixed hopper. According to the separation device for the construction waste recycled aggregate, through the arrangement of the light material separation mechanism, light materials such as wood chips and plastics in construction waste can be separated and recycled, the recycling efficiency is improved, resource waste is avoided, the light materials such as the wood chips and the plastics in the recycled aggregate are separated, and the quality of the recycled aggregate can be improved.

The invention discloses a broken stone screening device for a loader, and relates to the technical field of screening equipment, the broken stone screening device comprises a bucket connected to a lifting arm of the loader and a screen drum communicated to the back of the bucket and used for material separation, and screen holes used for filtering materials are formed in the half circumferential surface, close to the bottom of the bucket, of the screen drum; reinforcing frames are fixed to the inner side of the screen drum at equal intervals. According to the broken stone screening device for the loading machine, the loading machine drives an opening of the bucket to rotate upwards, materials are guided into a channel between the screen drum and the rotary drum, meanwhile, the driving mechanism drives the stone inlets which are distributed in a staggered and equal-included-angle mode through the rotary drum to scrape broken stones, and the materials can be conveniently screened from multiple channels; when the dispersing frame at the front end of the middle shaft rod and the material stirring rod at the tail end of the middle shaft rod move in the wave-shaped fluctuation cavity, the dispersing mechanism can disperse shoveled or extruded materials in a reciprocating mode through reciprocating fluctuation, and it is ensured that the device can efficiently screen clustered materials and broken stones.

The invention provides a steering wheel electric adjusting tubular column assembling and testing system. The steering wheel electric adjusting tubular column assembling system comprises a positioning mechanism, a bearing feeding mechanism, a check ring feeding device, a check ring distributing device and a press fitting mechanism. And the carrying robot is used for clamping the upper tubular column casing conveyed out from the interior of the equipment box body. And the positioning mechanism is used for positioning and pressing the upper tubular column casing. The bearing feeding mechanism is used for feeding the top bearing and conveying the top bearing to the positioning mechanism for fine positioning. The check ring feeding device is used for automatically feeding check rings. The check ring distributing device conveys check rings conveyed out of the check ring feeding device to the check ring distributing device for distributing. And the press-fitting mechanism is used for carrying out press-fitting operation on the conveyed opposite-vertex bearing and the retainer ring. Through cooperation of all the mechanisms, automation of assembly of the adjusting pipe column can be achieved, the time interval of component installation is shortened, the press-fitting process is rapid and coherent, and the large-scale and high-efficiency production requirements of the automobile manufacturing industry are met.

The invention relates to the technical field of power distribution cabinet milling machining, in particular to power distribution cabinet end cover machining milling equipment and a using method thereof.The power distribution cabinet end cover machining milling equipment comprises a milling tool, the milling tool is composed of a tool handle and a threaded tool bit, and the power distribution cabinet end cover machining milling equipment further comprises a flaring scrap suction mechanism, a scrap storage mechanism, a vent valve and a sealing valve; the chip storage mechanism comprises a T-shaped pipe and a material storage tank, the T-shaped pipe is provided with a discharge port, a first through port and a second through port, a material separation net plate is arranged in the second through port, the vent valve comprises a valve pipe, a valve pin and a sliding pipe, a vent notch is formed in the top of the sliding pipe, and a connecting bent pipe is arranged between the lower end of the sliding pipe and the flaring cover. Flying chips can be blocked by a flaring cover on the flaring chip suction mechanism, so that the flying chips are prevented from flying around, meanwhile, negative pressure suction force can be generated by a second through opening in a T-shaped pipe, and finally the chips located in the flaring cover can be sucked into a storage tank to be independently collected.

The utility model belongs to the technical field of automation equipment, and particularly relates to an automatic hinge rivet distributing and feeding device which comprises a vibration feeding disc, a discharging port of the vibration feeding disc is connected with a discharging pipe, and rivets arranged by the vibration feeding disc enter the discharging pipe in sequence according to the direction. The rivet separating device further comprises a material separating base, a material separating channel vertically penetrating through a body of the material separating base is arranged in the material separating base, a material separating ejector pin and a discharging ejector pin are transversely installed on the material separating base and are driven by a power mechanism to move, so that the material separating ejector pin and the discharging ejector pin enter and exit the material separating channel, and rivets located in the material separating channel are blocked or released. Compared with the prior art, the rivet distributing device has the advantages that the vibration feeding disc is matched with the distributing base, rivets arranged by the vibration feeding disc can enter the discharging pipe one by one according to the direction sequence, single distributing and feeding of the rivets are achieved through the distributing channel, the defect that in a traditional device, an additional distributing mechanism is needed for a whole string of rivets is overcome, and the riveting efficiency is improved. And the feeding precision and efficiency are greatly improved.

The invention relates to the technical field of membrane separation, in particular to a composite forward osmosis membrane based on mussel bionic interface enhancement and a preparation method thereof. The preparation method comprises the following steps: immersing a base material in a dopamine hydrochloride solution for oscillation reaction to obtain a modified base material; the surface of the modified base material is coated with a membrane casting solution in a blade coating mode, then phase inversion is carried out, the residual solvent is removed, then airing is carried out, and the composite forward osmosis membrane based on mussel bionic interface enhancement is obtained. By introducing the mussel bionic polydopamine intermediate layer, the long-standing technical contradictions of poor interfacial compatibility and weak binding force between the hydrophobic substrate and the hydrophilic separation layer are ingeniously solved, and the internal concentration polarization effect is remarkably inhibited. The prepared composite membrane has the advantages of high water flux, low salt reverse flux, stable structure and the like, and has wide application prospects in the fields of water treatment and substance separation.

The invention discloses energy-saving and environment-friendly kitchen waste treatment equipment, and relates to the technical field of kitchen waste treatment, the energy-saving and environment-friendly kitchen waste treatment equipment comprises a feeding frame, a crushing mechanism, a connecting frame, a material separation mechanism, a controller, a water tank, an overflow pipe, a fixed pipe, a barrel, a connecting pipe, a water flow pumping assembly, a cleaning pipe I, a reciprocating assembly, a cleaning pipe II and a water flow control assembly. Kitchen garbage is crushed through the crushing mechanism, solid-liquid separation and oil-water separation are conducted on the garbage through the material separation mechanism, clear water in the water tank is pumped out through the water flow pumping assembly and fed into the first cleaning pipe and the second cleaning pipe, during crushing, a small amount of clear water flows out of the second cleaning pipe, the crushing effect is improved, and a large amount of clear water flows out of the first cleaning pipe; and after the material separation mechanism is washed and crushed, the water flow control assembly controls the cleaning pipe I and the cleaning pipe II in a delayed manner, so that after a period of time, the amount of clean water flowing out of the cleaning pipe I is reduced, the amount of clean water flowing out of the cleaning pipe II is increased, and the crushing mechanism is washed.

The invention belongs to the technical field of membrane separation, and particularly relates to a method for preparing a high-flux hollow fiber nanofiltration membrane based on interfacial polymerization, the obtained membrane and application. The method comprises the following steps: firstly, carrying out pre-adsorption treatment on a polyethersulfone hollow fiber ultrafiltration base membrane through a polyethyleneimine aqueous solution to form a reactive anchoring layer; then sequentially dipping in an aqueous phase solution containing piperazine, sodium phytate and nanoscale cellulose whiskers and an organic phase solution containing trimesoyl chloride and 5-isocyanate isopeptide acyl chloride for interfacial polymerization; and finally, carrying out heat treatment on the obtained primary composite membrane, and completing a gas-phase cross-linking reaction in a glutaraldehyde steam atmosphere. According to the method, the hollow fiber nanofiltration membrane with high flux, high selectivity, excellent chlorine resistance and pollution resistance is successfully prepared through a multi-stage strengthening process, and the hollow fiber nanofiltration membrane is suitable for the fields of drinking water purification, industrial wastewater reuse, material separation and the like.

The utility model relates to the technical field of material separation in waste treatment, in particular to a spiral air screen. Comprising a shell of a cylindrical structure, a discharging pipe arranged at the upper end of the shell and a feeding pipe located on the upper side wall of the shell below the discharging pipe, a turbulent flow disc used for forming cyclone is arranged in an inner cavity of the shell, a center pipe communicated with the feeding pipe is arranged above the turbulent flow disc, and the turbulent flow disc is in transmission connection with a driving mechanism; a booster blower is arranged on the feeding pipe, and a negative pressure blower is arranged on the discharging pipe. According to the spiral air screen, impurities are separated through cyclone and centrifugal force, the spiral air screen is used for removing impurities such as sandy soil and gravel with large specific gravity in materials such as plastic films which are small in specific gravity and prone to floating in the air, the separation efficiency is high, and the spiral air screen is particularly suitable for the materials with high impurity content.

The invention discloses a double-spindle synchronous machining numerical control lathe, and relates to the technical field of numerical control lathes, the double-spindle synchronous machining numerical control lathe comprises a mounting plate, two controllers are mounted at the top of the mounting plate, driving motor seats are movably mounted on the two controllers, and first telescopic rods are fixedly mounted on the driving motor seats; fixing claw discs are fixedly mounted at the output ends of the first telescopic rods, a stand column is fixedly mounted in the middle of the top of the mounting plate, a machining base is movably mounted on the stand column, a plurality of tool bits used for punching and cutting are arranged on the machining base, and a material receiving box is arranged at the position, corresponding to the two fixing claw discs, of the top of the mounting plate. And a discharging box is movably installed on the lower portion of the interior of the discharging box, a base is fixedly installed at the bottom of the mounting plate, a material distribution box is fixedly installed in the base, and a water drainage pipe is installed on the material distribution box. According to the device, the effect that the workpieces and the scraps can be automatically classified, collected and stored while the workpieces and the scraps are automatically screened is achieved.

The invention discloses a method for separating and recycling a silver-copper composite material through selective interface oxidation. The method comprises the following steps that the material is crushed and sheared, and a crushed material is obtained; the crushed material is pretreated and then fed into an oxidation fluidized bed, an internal oxidation reaction is conducted in a gas phase at the temperature of 400-700 DEG C and the oxygen pressure of 0.2-0.6 MPa, the reaction time is 20-60 h, and a high-temperature material is obtained; quenching the high-temperature material to generate stress cracks on an oxidation interface to obtain a cooled material; and stripping the cooled material under the mechanical action to obtain a recycled copper material and a recycled silver material, oxidizing the electrical contact material or leftover materials of the electrical contact material in the oxygen atmosphere to oxidize an interface between the silver-copper composite materials to form an oxidation film, separating the two materials of the silver-copper composite materials under the quenching and mechanical actions, and then, obtaining the recycled copper material and the recycled silver material. The method is high in recovery rate, high in recovery purity and environment-friendly.

The utility model discloses a laser pipe cutting machine material distributing device which comprises a machine frame, a laser cutting head arranged on the machine frame and used for cutting pipes and a pneumatic chuck installed on the machine frame and used for clamping the pipes, a linear module is arranged on the top of the machine frame, and a supporting plate is arranged at the movable end of the linear module. A first air cylinder is installed at the bottom of the supporting plate, a material box used for collecting pipes is arranged at the output end of the first air cylinder, a material guiding inclined face is arranged on the machine frame, a baffle is movably installed on the material guiding inclined face, and a second air cylinder used for controlling the baffle to rotate is installed in the machine frame. Through the arrangement of the material box, the first air cylinder, the linear module, the supporting plate, the baffle and the second air cylinder, pipes with normal sizes, pipes with short sizes and waste materials can be separated, follow-up screening is not needed, and the production efficiency is greatly improved.

Systems and methods for deposition-based manufacturing and quantum spin separation in space environments are disclosed herein. A method of manufacturing a film in a space environment includes melting a metal in a melting pot using concentrated solar energy and pushing the melted metal through small openings in the melting pot to produce a liquid stream. The method further includes dispersing the liquid stream into liquid drops of the melted metal and depositing the liquid drops onto a mold surface.

The application provides a control method of an air separator, comprising the following steps: obtaining a material image on a feeding conveyor belt; determining a material volume flow and a material size according to the material image; determining a target opening size of an air separator adjusting valve according to the material volume flow; determining a target air speed level of the air separator according to the material size; determining a target air volume according to the target opening size of the air separator adjusting valve and the target air speed level; and controlling a fan rotating speed to work at a target rotating speed according to the target air volume. The method can realize work adjustment in the mode of the equipment, and achieves the purposes of accurate material separation and real-time processing capacity.

The invention relates to a sodium bicarbonate dry desulfurization system, and relates to the technical field of sodium bicarbonate desulfurization, the sodium bicarbonate dry desulfurization system comprises a reaction tower, a storage bin arranged on one side of the reaction tower, a feeding assembly arranged on the storage bin, a material distributing assembly and a material conveying assembly, the material distributing assembly is arranged below the storage bin and communicated with the storage bin, the material distributing assembly is used for distributing sodium bicarbonate into the material conveying assembly, the material conveying assembly comprises a first material conveying piece, a second material conveying piece, a third material conveying piece and a fourth material conveying piece, and a first nozzle and a second nozzle are formed in the top of the reaction tower; the first conveying piece and the second conveying piece convey materials to the first nozzle, the third conveying piece and the fourth conveying piece convey materials to the second nozzle, the first nozzle and the second nozzle are each provided with a spray gun, and the first nozzle and the second nozzle are symmetrically arranged. The device has the effect of reducing the problem that the temperature of an outlet of the reaction tower is continuously low when garbage such as industrial solid waste is treated.

The invention provides a battery recovery method and a battery recovery device, and the battery recovery method comprises the following steps: carrying out crushing treatment on a battery, and carrying out heating volatilization treatment on the crushed battery to obtain a gaseous mixed material and a solid mixed material; separating the solid mixed material to respectively obtain a diaphragm, a pole piece, black powder, copper particles and aluminum particles; in the separation process of the solid mixed material, the solid mixed material and / or an intermediate mixture obtained after the solid mixed material is separated are / is scattered. Through the technical scheme provided by the invention, the technical problem that the material separation effect of a battery recovery method in the prior art is relatively poor can be solved.

The invention discloses an intelligent control method and device for watchcase machining, and the method comprises the steps: material separation and pre-detection: cutting a plate according to the size of a watchcase to form sub-materials, collecting an image to recognize surface defects, and screening out qualified sub-materials to enter a forging and pressing process; multi-stage forging and pressing forming: carrying out progressive forging and pressing on the qualified sub-materials for at least three times to obtain a final annular blank body; processing a reference surface and generating a mask: processing the reference surface on the inner circumference of the final annular blank body, generating a mask matrix based on a defect detection result, and marking a non-processable area; self-adaptive finish machining: planning a tool path according to the mask matrix, processing an inner cavity and a side hole by avoiding a defect area, and dynamically adjusting laser power according to the defect depth; and closed-loop feedback optimization: detecting the surface quality of the finished watchcase, and if the defect density exceeds a preset threshold value, optimizing the cutting size or forging pressure of the sub-material. A closed-loop feedback optimization mechanism is adopted, so that production parameters can be adjusted in time, and the production efficiency and the product quality are improved while the cost is reduced.

The invention relates to the technical field of waste mulching film treatment, in particular to waste mulching film treatment heavy residue separation equipment which comprises a separation box, a conveyor is installed at the front end of the separation box, a feeding hopper is fixedly connected to the front end of the top of the separation box, and a material distribution square box is fixedly connected to the outer side of the separation box. A cyclone dust collector is installed at the rear end of the separation box, the top of the material separation square box is fixedly connected with the cyclone dust collector through a connecting pipe, a centrifugal fan is fixedly installed at the top of the cyclone dust collector, multiple functions of iron removal, smashing, screening, centrifuging, flapping, winnowing, dust removal and the like are integrated, the occupied area of the equipment and the material transfer link are reduced, and the production efficiency is improved. A complete, efficient, automatic and environment-friendly waste mulching film recycling solution is provided, the core innovation point is the composite motion design of the separation assembly and the automatic discharging design of the magnet assembly, the overall practicability is high, and very high market application value is achieved.

The utility model provides a ton bag flapping blanking device which comprises a rack, a feeding bin, a material flapping mechanism, a bag clamping mechanism and a weight sensor, the feeding bin is provided with a feeding port, a discharging port, a material distributing grating and a bin door, the material flapping mechanism is provided with a discharging platform, a flapping air cylinder and an adjusting air cylinder, and the weight sensor is arranged on supporting legs. According to the flapping discharging device, the flapping mechanism flaps ton bags to assist discharging to prevent material blockage, the adjusting air cylinder is controlled to adjust, and the flapping angle is found; the weight sensor senses the residual weight of the ton bag to control the on-off and frequency of the flapping mechanism and adjust the flapping angle, so that feeding can be carried out more quickly; the material separation grating separates and crushes the materials; the device is simple in structure, convenient to operate, high in automation degree and particularly suitable for lithium battery metal powder raw materials which are high in humidity, easy to stick and small in particle size, the problems that due to the fact that the raw materials are prone to caking, discharging is slow and blocking is caused are solved, the device is matched with an automatic production line, and the production efficiency is improved.

The invention discloses an on-line rapid detection device and method for the comprehensive precision of an internal spline pair, and particularly relates to the field of internal spline pair detection.The detection device comprises a workbench, a positioning rotating mechanism, a six-axis mechanical arm, a trigger type measuring head and a discharging mechanism, the positioning rotating mechanism is arranged on the workbench, the six-axis mechanical arm is arranged on the workbench, and the trigger type measuring head is arranged on the workbench; the triggering type measuring head is arranged on the six-axis mechanical arm, the discharging mechanism is arranged on one side of the workbench, the feeding mechanism is arranged on the side, away from the discharging mechanism, of the workbench, the feeding mechanism comprises a supporting frame, a containing frame, a connecting frame, an air cylinder, an inclined block, a slope and a material guiding frame, and the supporting frame is fixedly connected to the left side of the workbench; through the feeding mechanism, automatic gathering, single material separation and stable feeding of the to-be-detected internal spline pair are realized through gravity gathering of an inclined surface on the inner side of the placing frame and joint matching of an inclined block and a slope, and the conditions of tedious operation of manual feeding and low detection efficiency are avoided.

According to the efficient dust falling device suitable for conveying the falling material transfer point and the dust falling method of the efficient dust falling device, a falling material sealing cavity seals an upper belt discharging opening, and a dust material separation net is located under a lower belt discharging opening and obliquely arranged at the position, close to a lower belt, of the bottom end of the outer wall of the cavity; the air inlet cavity bottom plate, the air inlet pipe and the dust and material separation net jointly form an air inlet cavity, and the air inlet cavity is isolated into independent cavity bodies; an air outlet pipeline at the tail end of the air inlet pipe is gradually expanded; the exhaust pipeline is located on the outer wall, right opposite to the upper surface of the dust separation net, of the cavity, and an inlet of the exhaust pipeline extends into the blanking sealing cavity. The tail end of the exhaust pipeline is connected with the top end of the gas-solid separation pipeline which is vertically arranged, an outlet inner pipe communicated with the fan penetrates through the dust discharging pipes and then extends into the center of the gas-solid separation pipeline by a certain height, the dust discharging pipes are distributed on the periphery of the outlet inner pipe, and the outlet ends of the dust discharging pipes are connected with one end of the material conveying pipe. The device can prevent falling materials from impacting dust raising, meanwhile, material loss is avoided, and the environment and occupational health of workers are protected.

The invention relates to the technical field of battery voltage internal resistance testing, and discloses a battery voltage internal resistance testing machine which comprises a rack, a feeding mechanism, a material delivering mechanism, a material testing mechanism and a discharging mechanism are arranged on the rack, the feeding mechanism comprises a material conveying module and a tray distributing module, the material conveying module is used for conveying stacked material trays, and the tray distributing module is used for distributing the stacked material trays; the material distributing module is used for distributing the stacked material trays, the material delivering mechanism is used for feeding the distributed material trays and sequentially transferring the material trays to the material detecting mechanism and the discharging mechanism, the material detecting mechanism is used for detecting to-be-tested batteries in the material trays, and the discharging mechanism is used for sequentially selecting and discharging the detected batteries; according to the battery detection device, the material conveying module and the tray separation module are arranged, then the material conveying mechanism is used for feeding the trays subjected to material separation, the battery is detected through the testing mechanism, and the discharging mechanism is used for discharging the trays after detection is completed, so that the battery voltage of the battery is detected in a full-automatic mode, the detection efficiency is improved, and the detection cost is reduced.

The invention discloses a method for smelting heat-resistant steel 0Cr25Ni20 through low-cost iron and P removal, and the method comprises the steps of material preparation, P and Fe removal treatment, material distribution, AOD (argon oxygen decarburization) refining, LF (ladle furnace) refining and continuous casting, and the chemical components of the heat-resistant steel 0Cr25Ni20 are controlled in percentage by mass: less than or equal to 0.080% of C; si < = 1.00%; mn < = 2.00%; p is less than or equal to 0.04%; s is less than or equal to 0.02%; ni: 19%-22%; according to the invention, a material separation form is adopted, heat-resistant steel for continuous casting of two furnaces can be produced at the same time, the process flow is convenient, the AOD smelting time is shorter, and the quantity production is guaranteed. The low control of p is realized, high manganese is used for replacing a manganese-iron alloy material, the production cost is reduced, the low-p molten nickel iron is smelted by removing iron and p from high-p pig iron, and the use of pure nickel is reduced. And common high-carbon ferrochrome is adopted, so that the use of imported ferrochrome is reduced. Meanwhile, the chromium melting water in the intermediate frequency furnace reduces oxidation of chromium and improves the recovery rate of chromium. Iron and p are removed at low cost, and iron-removed slag is recycled, so that the production cost is reduced while the production efficiency is improved.

The utility model relates to low-temperature vacuum distillation equipment convenient for material separation, and aims to solve the technical problems that the stirring range is still limited because stirring blades of the low-temperature vacuum distillation equipment can only stir in a horizontal fixed direction, the stirring is insufficient, the temperature rise of materials is non-uniform, and the material separation efficiency is reduced, and the low-temperature vacuum distillation equipment comprises a low-temperature distillation tank, according to the device disclosed by the utility model, the rotating shaft is effectively driven to rotate through the motor, so that the spiral blade and the stirring rod are driven to rotate, materials can be stirred in the vertical direction through the rotation of the spiral blade, and the materials can be stirred in the horizontal direction through the rotation of the stirring rod; the stirring effect is improved, uniform temperature rise of materials is facilitated, accordingly, the material separation efficiency is improved, the stirring rod can effectively drive the scraping plate to move when rotating, the scraping plate effectively scrapes and cleans the inner wall of the tank body, and adhesion of the materials to the inner wall of the tank body is reduced.

A leather cup cleaning machine relates to the technical field of cleaning equipment and comprises a rack. A leather cup conveying mechanism is installed on the rack and arranged in the X direction. A material separating mechanism is installed on the machine frame and comprises a first material separating baffle and a second material separating baffle, and the first material separating baffle and the second material separating baffle move to the position above the packing cup conveying mechanism in the Y direction in a reciprocating mode. A cleaning area used for cleaning the leather cups is formed between the first material separating baffle and the second material separating baffle, and at least one leather cup is placed in the cleaning area. A cleaning mechanism is installed on the machine frame and comprises at least one cleaning assembly, and the cleaning assemblies are vertically arranged above the leather cups and used for cleaning the leather cups located in the cleaning area. The residual gypsum on the inner wall of the leather cup can be removed, the labor intensity of operators is reduced, the automation degree is high, and the production efficiency is improved.

The utility model belongs to the field of water treatment and material separation, and provides a reversible cross-flow filtering membrane device, which comprises a membrane unit, a water outlet end interface, two circulation end interfaces, a first pipeline, a second pipeline, a second pipeline and a third pipeline, the membrane unit is provided with a water production end interface and two circulation end interfaces, the two circulation end interfaces are communicated through the first pipeline, the first pipeline is provided with a two-way liquid pumping assembly, and the flow direction of fluid can be changed through the two-way liquid pumping assembly; an outlet of the water inlet pump communicates with the first pipeline, and a check valve is arranged at the outlet of the water inlet pump; and the water producing tank is communicated with the water producing end interface through a second pipeline. According to the device, the two circulation end interfaces of the membrane unit are communicated through the first pipeline to form a circulation loop, and then the reversing of circulating water flow can be realized through the two-way liquid pumping assembly. By arranging a pressure sensor, a control system and the like, the circulation direction can be automatically switched according to pressure or timing, and bidirectional cross-flow filtration of the membrane unit is realized. The accumulation of pollutants on the surface of the membrane can be avoided, the risk of membrane pollution blockage and scaling is reduced, high flux can be maintained, the membrane washing frequency is reduced, and the operation cost is reduced.

The invention relates to the crossing field of computer simulation and aerospace propulsion technology, and discloses a numerical simulation method for solid propellant grain cutting treatment, which comprises the following steps: establishing a three-dimensional model of a grain and a cutting tool, and defining a heat-force-damage coupling constitutive relation and boundary conditions; performing multi-physical field monitoring based on the weighted combination of the equivalent plastic strain, the temperature and the damage gradient at each time step; dynamically executing self-adaptive encryption and coarsening of the grid; in combination with dynamic load balancing in parallel computing, the resource utilization rate is increased; and material separation is simulated through a damage fracture criterion, and finally high-precision cutting force, a temperature field, a stress-strain field and a cutting morphology are output. According to the method, the simulation precision and efficiency are improved, and reliable support is provided for process optimization and safety evaluation.