40results about How to "Avoid recycling" patented technology

The invention discloses a solvent-free preparation method of 2-thiophenesulfonyl fluoride, which comprises the following steps: carrying out nucleophilic fluorination reaction on 2-thiophenesulfonyl chloride under the action of a fluorination reagent at 0-70 DEG C to generate a 2-thiophenesulfonyl fluoride crude product, distilling under a vacuum condition, and separating the product at 30-100 DEG C to obtain colorless and transparent high-purity 2-thiophenesulfonyl fluoride. The method provided by the invention has the advantages of easily available raw materials, simple synthesis process, high product purity, high yield, large material contact area by adopting a solvent-free method, and reaction time saving; the method does not need solvent recycling and post-treatment links, is energy-saving and environment-friendly, saves the production cost, achieves the purpose of clean production, and has a wide application prospect.

The invention discloses a negative pressure atomization and supergravity enhanced liquid-solid reaction magnesium metallurgy device and method.The device comprises a furnace body, a liquid-solid mixing reaction material tank, a first-stage material gathering taper pipe and a second-stage material gathering taper pipe are fixedly arranged in the furnace body from top to bottom, and a solid raw material distributing plate is fixedly arranged in the liquid-solid mixing reaction material tank; powder feeding threads are formed in the solid raw material feeding pipe, the solid raw material feeding pipe is rotationally connected with the furnace body and connected with a transmission assembly, the solid raw material feeding pipe is rotationally connected with a neck of a hopper, and the neck of the hopper is connected with a solid raw material feeding vacuum valve; a liquid reducing agent sprayer fixedly connected with a liquid reducing agent feeding pipe is arranged in the liquid-solid mixing reaction material tank, and the liquid reducing agent feeding pipe is rotationally connected with the liquid-solid mixing reaction material tank and is connected with a liquid reducing agent feeding vacuum valve; the solid raw material feeding pipe and the liquid reducing agent feeding pipe are both provided with heating rings, the furnace body is connected with the magnesium steam collecting system connected with the vacuumizing system, the slag outlet capable of being sealed is formed in the bottom of the furnace body, energy consumption of magnesium metallurgy is reduced, and the reaction efficiency is improved.

The invention discloses a question-answering method, device and equipment of an intelligent question-answering large model and a storage medium. The question-answering method of the intelligent question-answering large model comprises the following steps: constructing at least one data container block based on physical resources of target equipment and a knowledge base of a sub-model associated with the intelligent question-answering large model; performing memory region division on the data container block to generate a data storage region, a data response region and a secondary data response region; and responding to input request data of the intelligent question and answer large model based on the data container block, and returning response data of the input request data. Through the technical scheme, the utilization rate of a memory is improved, and then the processing efficiency of the model is improved.

This invention discloses a resource recovery system for dredged sediment treatment based on ultrasonic extraction and flotation synergy, comprising: a pretreatment unit, a first-stage ultrasonic extraction reaction unit, a second-stage solid-phase adsorption reaction unit, a third-stage flotation separation unit, a dewatering unit, a residual water treatment unit, and a nitrogen and phosphorus recovery unit. It also discloses a resource recovery method for dredged sediment treatment based on ultrasonic extraction and flotation synergy. This invention solves the problems of low pollutant removal rate, high risk of secondary pollution of dredged soil, and limited resource recovery in traditional dredged sediment treatment. Through the synergistic effect of multiple units including "ultrasonic-liquid-solid-phase adsorption-micro-nano bubble flotation," it achieves efficient release of nitrogen and phosphorus, simultaneous removal of microplastics, rapid separation of clean sediment from polluted phases, and recovery of nitrogen and phosphorus for fertilizer production and resource recovery of clean sediment. The entire process is green and low-consumption, suitable for compact layout on water or near shore, and can simultaneously meet the requirements of sediment reduction, harmlessness, and resource recovery.

The present invention discloses an anti-puncture scalp needle, comprising an outer sleeve, a steel needle assembly and an adjusting piece. An installation channel is provided inside the outer sleeve, and two ends of the installation channel respectively penetrate to the two ends of the outer sleeve. A wing is provided on one side of the outer sleeve. The steel needle assembly is arranged in the installation channel and can be moved along the length direction of the outer sleeve. The steel needle assembly can be adjusted between a first position and a second position. When the steel needle assembly is in the first position, the front end of the steel needle assembly is received in the installation channel. When the steel needle assembly is in the second position, the front end of the steel needle assembly extends out from the front end of the outer sleeve. The adjusting piece is arranged at the rear end of the outer sleeve, and is used to drive the steel needle assembly to switch between the first position and the second position. A locking mechanism is also provided on the needle wing, which is used to lock the steel needle assembly in the first position after use. The present invention has the advantages of simple structure, convenient use, strong practicality and high safety.

The utility model discloses a transformer production resin pouring device, and relates to the technical field of pouring devices, the transformer production resin pouring device comprises a pouring box body, the upper end of the pouring box body is provided with pouring equipment, the bottom surface of the inner cavity of the pouring box body is provided with a recovery tank, the lower part of the inner side wall of the pouring box body is provided with a square frame, and the square frame is provided with a hollow cavity. Cross beam plates are evenly arranged between the front side wall and the rear side wall of the square frame in the left-right direction, the outer sides of the cross beam plates are sleeved with cleaning blocks, a cross rod is arranged between the lower ends of the cleaning blocks, and the left end and the right end of the cross rod are provided with a threaded hole block and a round hole block respectively. And in the pouring process, redundant resin can fall into the recycling groove from gaps between the cross beam plates, the resin remaining on the cross beam plates can be removed through cooperation of the cleaning blocks and the pointed-end sliding blocks, and the resin is prevented from remaining in the device and recycled in a unified mode.

The invention relates to the technical field of waste resource utilization, in particular to application of a lithium iron phosphate recycled material and a method for preparing oil by catalyzing waste plastics. The method comprises the steps that firstly, electrolyte and a binding agent left on a waste positive plate are removed through segmented pyrolysis, and the lithium iron phosphate recycled material is obtained; and doping transition metal components to prepare a catalyst for catalyzing the waste plastics to prepare high-value oil products. According to the waste lithium iron phosphate battery, the lithium iron phosphate positive electrode waste is recycled and converted into the catalyst, the cost advantage is better achieved, high-value oil products are prepared by introducing transition metal elements, cooperating with iron elements in the battery waste and catalyzing waste plastics, and the value of waste utilization is maximized.

The invention discloses a fine sand recycling machine. The fine sand recycling machine comprises a rack, a driving motor, a swirler, a vibrating screen base and a water tank, wherein the water tank is mounted in the vibrating screen base; the machine frame is installed above the vibrating screen base and installed on the machine frame through the motor base. A material returning box is further mounted on the rack, and the swirler is communicated with the material returning box; the cyclone comprises a feeding hole, a water outlet and a sand outlet, the feeding hole is communicated with the water tank, and the water outlet is communicated with the material returning box; the sand outlet is positioned above the rack; a slurry pump is further arranged between the feeding port and the water tank and driven by a motor to suck a sand-water mixture in the water tank into the feeding port from the water tank. In the swirler, due to the action of centrifugal force, sand and water are separated, the separated sand is discharged through a sand outlet of the swirler and recycled, and treated wastewater enters a material returning box through a water outlet of the swirler and is finally discharged. The vibrating function of the vibrating screen base is beneficial to screening and recycling of the sand, and the treatment efficiency of the equipment is improved.

The utility model belongs to the technical field of mowing machines, and particularly relates to a mowing head of a mowing machine, a machine head main body is composed of a shell, a cutting area and a protective chassis, a cutting device is arranged in the cutting area, and the cutting area is located between the shell and the protective chassis. According to the mowing head of the mowing machine, under the action of centrifugal force generated by rotation of the cutting disc, the pay-off wheel is driven to rotate in the rotary bearing, so that the mowing rope is thrown out of the interior of the pay-off wheel under the cooperation of the balance weight ball, the length of the mowing rope does not need to be manually adjusted, the mowing head is more convenient to use, the mowing rope is thrown out of the interior of the through hole, and when cutting is stopped, the mowing head is convenient to use. The torsion spring pulls the pay-off wheel to rotate and reset under the action of the torsion of the torsion spring, so that the grass trimming rope is recycled, and the counterweight ball is larger than the inner diameter of the through hole, so that the through hole is blocked by the counterweight ball, the grass trimming rope is prevented from being completely recycled, and mosquitoes and the like can be prevented from entering the pay-off bin through the through hole.

The utility model discloses surface polishing equipment for ball bearing machining, and relates to the technical field of ball bearing machining, in particular to the surface polishing equipment for ball bearing machining, which comprises a base, a motor mounting seat is arranged in the base, and a rotating motor is arranged in the motor mounting seat. A rotating shaft is arranged at the output end of the rotating motor, a bottom clamping plate is arranged at the tail end of the rotating shaft, a fastening rod is arranged on the upper surface of the bottom clamping plate, a bolt is in threaded connection with the inner wall of the fastening rod, a top clamping plate is arranged above the bolt, a nut is arranged above the top clamping plate, and a supporting rod is arranged on the surface of the base. According to the surface polishing equipment for ball bearing machining, through cooperative arrangement of a top clamping plate and a bottom clamping plate, in the using process, a part can be firmly fixed through cooperation of the top clamping plate and the bottom clamping plate, and therefore the effect that the polishing process is more stable is achieved; and the purposes of fastening and clamping the part and polishing in multiple directions are achieved.

The present application belongs to the technical field of pesticide residue detection method, and particularly relates to a method for determining the chlorothalonil residue in fruits and vegetables, comprising the following steps: S1, extracting the fruit and vegetable sample by using an alkaline extraction solution to obtain an extraction solution; S2, adding a garlicin solution to the extraction solution; S3, adding a purification filler to the conversion solution, vortexing, centrifuging, filtering to obtain a to-be-tested solution; S4, using an ultra-high performance liquid chromatography-tandem mass spectrometer to detect the concentrations of mercaptochlorothalonil and 4-hydroxychlorothalonil in the to-be-tested solution, and calculating the total residue of chlorothalonil in the sample. The present application breaks through the traditional idea of inhibiting the conversion of chlorothalonil, actively promotes the complete and quantitative conversion of chlorothalonil into a single derivative through "alkaline extraction + exogenous garlicin catalysis", changes the complex and uncontrollable conversion process into a controllable and quantitative chemical reaction, and avoids the problems of low recovery rate and false negative caused by incomplete or unmeasurable conversion in principle.

The invention relates to a method for recovering nickel and cobalt from cobalt nickel hydroxide slag. The method comprises the following steps: mixing the cobalt nickel hydroxide slag with an ammonium solution, and carrying out ammonia leaching reaction to obtain an ammonia complexing solution; the ammonia complexing solution is sequentially subjected to oxidation decomplexing and a first sulfuration reaction, and a manganese and copper removal ammonia complexing solution is obtained; the manganese and copper removal ammonia complexing solution is subjected to a reduction reaction to obtain nickel-cobalt powder and a zinc ammonia complexing solution; the zinc-ammonia complexing solution is subjected to a second vulcanization reaction to obtain an ammonium solution, and the ammonium solution is recycled; according to the method, nickel and cobalt in cobalt nickel hydroxide are efficiently recycled, the purity of nickel and cobalt powder preferably reaches 99.5% or above, the recovery rate of nickel preferably reaches 94.2% or above, the recovery rate of cobalt preferably reaches 91.8% or above, and the method is simple in technological process, low in cost, environmentally friendly and good in industrial application prospect.

The invention provides a low-moisture polymer lithium battery dispersing agent, a preparation method and application, N-vinyl pyrrolidone is dissolved in a special solvent for lithium ion battery slurry, a prepolymer containing the N-vinyl pyrrolidone is used as an initiation system, polymerization reaction is performed in a nitrogen atmosphere, and the low-moisture polymer lithium battery dispersing agent is obtained. Wherein the special solvent for the lithium ion battery slurry is at least one of N-methyl pyrrolidone, diethyl carbonate and diethyl carbonate. According to the low-moisture polymer lithium battery dispersing agent, the preparation method and the application, the technical problems that the requirement for the low moisture content is extremely high in the production process of lithium ion battery slurry in related technologies, and the low moisture content is difficult to realize by a conventional lithium battery dispersing agent are solved.

The utility model relates to a waste heat recovery structure of an incinerator, and aims to solve the problems that a waste heat recovery structure of an existing incinerator is complex, scaling is prone to occurring in a waste heat recovery tank in the waste heat recovery process of an incinerator body, hot water in the waste heat recovery tank cannot be replaced automatically, and waste heat is wasted. The waste heat recovery device comprises a furnace body, a waste heat recovery groove is formed in the furnace body, a liquid return pipe is installed above one end of the furnace body, a liquid inlet pipe is installed below one end of the furnace body, and a liquid outlet pipe is installed below the other end of the furnace body. The other end of the liquid inlet pipe and the other end of the liquid return pipe are provided with coiled pipes, the liquid inlet pipe is provided with a circulating pump, and the exterior of the coiled pipes is provided with a waste heat recovery tank, the phenomenon that scaling occurs in the waste heat recovery tank in the waste heat recovery process of the boiler body is avoided, the number of parts of the waste heat boiler structure is reduced, and the waste heat recovery efficiency is improved. And the protection effect of the waste heat boiler structure in the using process is improved.

The utility model relates to the field of coal mine dust removal devices, and discloses a coal dressing dust removal device which comprises a treatment box, a mounting box is fixedly connected to one side of the inner bottom face of the treatment box, a water suction pump is arranged in the mounting box, and a connecting pipe is arranged on the outer wall of one side of the treatment box. Two filter screens are fixedly connected to the lower end of the inner wall of the treatment box, a flow dividing pipe is fixedly connected to the upper surface of the treatment box, a plurality of atomizing nozzles are fixedly connected to the inner top surface of the treatment box, and a separation frame is arranged in the middle of the inner wall of the treatment box. According to the coal dust screening device, the disc type motor is arranged, the disc type motor drives the rotating shaft to rotate by starting the disc type motor, so that the rotating shaft drives the scraping plate to rotate, coal dust atomized and condensed on the screening net is scraped to the material guiding plate from the falling groove, and then the coal dust is discharged from the discharging groove; therefore, the problem that a worker manually cleans the filter screen in the past is avoided.

The utility model provides a charging panel for electronic equipment, which relates to the related technical field of electronic equipment and comprises a front panel, four or more charging wire outlets are arranged on the front surface of the front panel close to the center, and fixing seats are arranged on the back surface of the front panel corresponding to the charging wire outlets in number. Fixing rods are installed on the inner sides of the fixing bases in an extending mode, fixing shells are arranged on the peripheries of the fixing rods on the left side, clockwork springs are arranged on the inner sides of the fixing shells, and self-locking gear sets are arranged on the opposite sides of the fixing rods on the left side and the fixing rods on the right side. A charging line is arranged on the periphery of the fixing rod on the left side and located on the left side of the fixing shell, and an adapter is arranged at the end, located on the front face of the charging line outlet, of the charging line. Through the design, the length of the data line can be effectively guaranteed, and a corresponding charging interface can be selected according to the requirements of a user.

The application provides a factory building three-dimensional modeling method and system based on a module library, and belongs to the technical field of three-dimensional modeling and human-computer interaction. The method comprises the following steps: opening a first factory building three-dimensional modeling structure file based on a first three-dimensional modeling application program on a first device; uploading a first subcomponent in a first format to a module library after the first editing of the first subcomponent in the structure file; downloading the first subcomponent from the module library for second editing by a second device; and configuring a second three-dimensional modeling application program on the second device, and the second three-dimensional modeling application program performs the second editing. The system comprises a shared module library, a first device and a second device which can communicate with each other, the first device and the second device are configured to support three-dimensional modeling application programs in different editing formats; and the application is based on a unified shared module library, and thus the technical problems of difficult data interaction and poor information flow caused by the deficiencies of the existing three-dimensional modeling technology in data sharing and collaboration are solved.

The invention discloses a polypeptide-containing multifunctional organic-inorganic composite material as well as a preparation method and application thereof. The composite material is prepared by compounding organic matters such as waste containing lignin and water-insoluble polysaccharide, waste containing protein and the like and inorganic matters containing nitrogen, phosphorus and potassium through certain steps. The material has multiple functions of promoting plant growth, controlling nutrient release, absorbing and retaining water, reducing damage of saline-alkali soil to plants, passivating heavy metal ions and the like. The method has the advantages of easily available and cheap raw materials, no pollution in the production process, diversified product functions, convenience in use, high production efficiency, low cost, easiness in large-scale production and application and the like. The method is a new method for high-valued and large-scale utilization of wastes such as straws, can solve the problem of straw utilization, promotes agricultural production, protects the ecological environment, and has a wide application prospect.

The present application provides a kind of carrier suitable for unmanned aerial vehicle to carry out express product distribution, the carrier can be fixed in all directions to express product, and can efficiently release this all-directional fixation, and realize self-unloading.The present application includes box and express product fixing device, the box includes reversible bottom plate, bottom plate overturning control device and mounting device;The express product fixing device includes parallel fixing device and vertical fixing device, the parallel fixing device is used to fix express product in front and back, left and right direction, and the vertical fixing device is used to fix express product in up and down direction.The present application can realize the fixation to various shapes and sizes of express product by plane fixing device and vertical fixing device, further improves the applicability to express product;At the same time, the self-unloading of the carried express product is realized, the recycling of carrier is avoided, so as to effectively improve the utilization efficiency of carrier, and the cost of recycling is saved.

The utility model relates to a system for efficiently recovering gold, silver and copper from complex gold ore gold extraction tailing broken carbon, which comprises a ball mill, and an ore pulp pump and a grading cyclone which are sequentially connected with the ball mill, and an overflow port of the grading cyclone is sequentially connected with a medicament stirring barrel, a flotation system and a 1 # filter; a filter residue opening of the 1 # filter is sequentially connected with a novel ashing roasting furnace, a reduction smelting furnace, a copper-silver leaching stirring tank and a 2 # filter, a filtrate opening of the 2 # filter is sequentially connected with a silver chloride precipitation stirring tank and a 3 # filter, a filtrate opening of the 3 # filter is sequentially connected with a copper replacement stirring tank and a 4 # filter, and a filter residue opening of the 3 # filter is sequentially connected with a silver replacement stirring tank and a 5 # filter. Flotation equipment, ashing roasting equipment, reduction smelting equipment, selective leaching equipment and the like are ingeniously combined to form a complete complex gold ore gold extraction tailing broken carbon recovery system, and meanwhile, proper technological parameters are matched, so that high-efficiency recovery of valuable metals such as gold, silver and copper in complex broken carbon with high copper, high iron, high calcium and the like is achieved.

The invention discloses a field data recovery system and method based on an unmanned aerial vehicle. The system comprises a ground control device, an unmanned aerial vehicle recovery device and a field data collection device. The data recovery device comprises an unmanned aerial vehicle, a power module, a wireless router and a recovery control module. The unmanned aerial vehicle recovery device comprises an unmanned aerial vehicle and a power module, a second narrowband radio frequency module, a recovery control module and a wireless router arranged on the unmanned aerial vehicle. The field data collection device comprises a main controller, a Wi-Fi module, a third narrowband radio frequency module and a sensor module. The invention constructs a temporary wireless local area network through a wireless router, thereby avoiding the costly construction of basic network facilities. By arranging a narrowband radio frequency module for transmitting control instructions and status information between a ground control site and a recovery control module, the operation difficulty is reduced and the success rate of data recovery is improved.

The invention discloses a power taking device for FTU debugging and maintenance, and the device comprises a basic part which comprises a supporting assembly, a transportation assembly disposed on the supporting assembly, and a power taking assembly disposed on the supporting assembly. The folding and unfolding component comprises a rotating assembly arranged on the supporting assembly, a locking assembly arranged on the rotating assembly and an unlocking assembly arranged on the supporting assembly. According to the power taking device for FTU debugging and maintenance, an anti-explosion plug is pulled to enable a storage disc on the rear side to rotate, when the storage disc rotates, an inner gear ring can be driven to rotate, a driven gear drives a main gear to rotate, accordingly, a storage disc on the front side is driven to rotate reversely, arrangement of secondary cables is completed, equipment can be locked under mutual cooperation of a ratchet wheel and a pawl, and the power taking device is convenient to use. And when recycling is needed, only a threaded disc needs to be rotated, so that an arc-shaped groove controls an arc-shaped plate to expand and break away from a ratchet wheel through a long rod, a coil spring drives a rotating rod to rotate, and then a rotating disc accommodates the secondary cable.

The utility model discloses a kind of leaching and impurity removing devices for rare metal smelting, including inlet pipe, drain pipe, device body;The device body further includes shell, inner container, filter bag, base motor, processing mechanism, the inner container of the water hole of side surface setting is rotationally arranged in the inside of shell, filter bag is arranged in the inside of inner container, base motor is fixedly arranged in the inside bottom of shell, the upper output end of base motor is connected with the below of inner container, processing mechanism is arranged in the above of shell, and base motor is connected between the telecommunication of production workshop controller.The function of the utility model is that the rare metal in the material of broken block and powder can be leached and impurity removed simultaneously, the effective separation of leaching liquid and material is achieved, the leaching liquid remaining in material is recovered to the maximum extent, the waste of rare metal element in material is reduced, and the leaching efficiency is improved;Filter bag can prevent material chippings from remaining in device interior during leaching process, and facilitate cleaning and recycling.

The application relates to an anti-fake bottle cap which comprises an outer sleeve, a lower sleeve and a limiting ring, the outer sleeve is provided with a first internal cavity which penetrates the top and bottom of the outer sleeve in the axial direction, a fixing groove is arranged on the inner wall of the outer sleeve, and a limiting gap is arranged on the inner wall of the outer sleeve; the lower sleeve is provided with a clamping jaw and a fixing table, the clamping jaw is used for clamping a target object, and the fixing table is assembled with the fixing groove to lock the outer sleeve and the lower sleeve; the limiting ring is provided with a limiting structure which is used for extending into the limiting gap in the state that the fixing groove and the fixing table are assembled to limit the relative rotation between the outer sleeve and the lower sleeve. The outer sleeve is provided with the fixing groove, the fixing groove is matched with the fixing table arranged on the lower sleeve to be fixed, and the lower sleeve is further provided with the clamping jaw which is used for clamping a glass bottle to firmly fix the bottle cap on the glass bottle; when the bottle cap is pulled up by high temperature or maliciously pulled up as a whole, the bottle opening is damaged or the appearance of the external part is damaged, the consumer is prompted that the bottle cap has been opened, the package material recycling and the like are prevented, and the purpose of preventing counterfeiting is achieved.

The utility model discloses an assembly type folding ladder which comprises outer supporting legs, inner supporting legs are rotationally connected to the interiors of the top ends of the outer supporting legs on the two sides respectively, communicating grooves are formed in the upper sides of the outer supporting legs and the upper sides of the inner supporting legs, and sliding grooves communicated with the communicating grooves are formed in the outer supporting legs and the inner supporting legs. A first gear is rotatably connected to the inner wall of the bottom end of the sliding groove, the tail end of the first gear penetrates through the sliding groove to be fixedly connected with a rotating wheel, the top of the first gear is in meshed connection with a second gear, the tail end of the second gear is fixedly connected with a lead screw, the outer side of the lead screw is in meshed connection with a moving table, and a connecting piece is fixedly connected to the top of the moving table; the connecting pieces penetrate through the outer sides of the communicating grooves to be connected with pushing rods through rotating shafts, the sides, deviating from each other, of the outer sides of the two sets of outer supporting legs and the inner supporting legs are rotationally connected with a plurality of handrails, the other ends of the handrails are rotationally connected with the pushing rods, the foldable handrails can be added to the folding ladder, and the using safety of the folding ladder is improved.

The present invention relates to an iron-tungsten composite electrode and its use, a heterogeneous electro-Fenton reaction device and a method for treating organic wastewater, wherein the two sides of the iron-tungsten composite cathode have different hydrophilicity and hydrophobicity, one side of the hydrophobic layer is exposed to the air, and H2O2 is synthesized by using dissolved oxygen from the outside air, and the hydrophilic layer side carrying the catalytic component is downwardly contacted with the liquid to catalytically produce active groups, and the device does not require external aeration to avoid recycling the catalytic components. The iron-tungsten composite cathode of the present invention can be reused ten times under optimal conditions (near neutrality). The introduction of the co-catalyst tungsten accelerates the reduction of high-valent iron species and promotes the synthetic conversion of the active group ·OH. The heterogeneous electro-Fenton system of the present invention is suitable for a wide pH range (3.0-11.0). Even when reacting for 90 minutes under alkaline conditions (pH=11.0), the initial concentration of 10 mg L ‑1 A 100% removal rate of atrazine was obtained.

The utility model provides an aluminum bar saw which comprises a rack, a moving device, a first clamping device and a water jet cutting device, and a water tank is arranged below the rack; the moving device is hung upside down and is arranged above the rack; the first clamping device comprises a supporting frame, a rolling ring, a first driving assembly, a second driving assembly and a plurality of rollers, the rolling ring is arranged on the supporting frame and rotationally connected with the supporting frame, the supporting frame and the first driving assembly are both arranged at the moving end of the moving device, and the first driving assembly is in transmission connection with the rolling ring; the first driving assembly is used for driving the rolling ring to rotate; the second driving assembly is arranged in the rolling ring, connected with the multiple rollers and used for driving the multiple rollers to clamp the aluminum bar. The aluminum bar cutting device solves the problem that when the radius of an aluminum bar is far larger than that of a cutting disc, traditional cutting equipment is difficult to cut the aluminum bar.

The invention belongs to the technical field of air conditioners, and discloses a refrigerant recovery system and a control method. The refrigerant recovery system comprises a refrigerant leading-out pipeline used for being connected with refrigeration equipment to be recovered, a first flow path and a second flow path, the first flow path and the second flow path are connected to the outlet end of the refrigerant leading-out pipeline in parallel, and the first flow path and the second flow path are arranged in the mode that a first valve is opened, and a second valve is closed; the detection assembly can detect the saturation pressure value of the refrigerant flowing into the first flow path, the refrigerant recovery system is in a recovery mode, the first valve is closed, the second valve is opened, and the recovery assembly can recover the refrigerant flowing into the second flow path. According to the refrigerant recycling device, the first flow path and the second flow path are connected in parallel, so that the types and the purity of refrigerants can be quickly and simply identified and recycled in the recycling process, refrigerants with extremely low purity or refrigerants with different types are prevented from being recycled into the same storage tank, the purity of the refrigerants to be recycled is improved, and the recycling efficiency of the refrigerants is improved. And the recovery efficiency of the refrigerant is improved.

The application discloses a kind of high filling plant fiber reinforced epoxy vegetable oil-based glass-like high molecular composite material and preparation method thereof, and is prepared according to the following steps: (1) the synthesis of aldehyde group-containing intermediate: epoxidized vegetable oil is reacted with aldehyde group-containing compound in the presence of catalyst to obtain aldehyde group-containing intermediate; (2) melt premixing: aldehyde group-containing intermediate obtained in step (1) is melt mixed with dry plant fiber at 140~180 °C; (3) prepolymer formation: diamine compound is added to the mixture of step (2), wherein the molar ratio of amino group to aldehyde group is (1.1~1.6):1, and the mixture is continuously reacted to form a prepolymer; (4) curing forming: the prepolymer obtained in step (3) is subjected to mold forming and curing treatment to obtain a composite material. The application significantly improves the comprehensive performance of epoxy vegetable oil-based composite material, and the raw material source is extensive, and the process is green and environmentally friendly, which has wide application prospect in the field of recyclable high-performance structural materials.