913results about How to "Reduce replacement frequency" patented technology

The invention discloses a preparation method of a chitosan-sodium alginate-diatomite composite adsorbent. The preparation method comprises the following steps: (1) carrying out calcination pretreatment on diatomite; (2) dissolving sodium alginate powder in water; (3) adding the calcined diatomite into a sodium alginate solution to prepare a mixed solution a; (4) adding CaCl2 into an acetic acid solution for dissolving; (5) adding chitosan powder into a CaCl2 solution, and uniformly stirring to obtain a mixed solution b; (6) dropwise adding the mixed solution a into the mixed solution b for crosslinking to prepare SA / DM / CS composite gel balls; and (7) washing the gel balls with water for several times, repeatedly freezing and thawing for several times, and drying to obtain the composite adsorbent. The composite adsorbent is prepared by dropwise adding the sodium alginate solution containing the calcined diatomite into the mixed solution of the chitosan and the CaCl2, so that the problem of low mechanical strength of single sodium alginate hydrogel is solved, and the recycling stability of the hydrogel microsphere adsorbent is improved.

The invention provides a hydrogen refueling station and a refueling method of a hydrogen storage bottle group of the hydrogen refueling station. The hydrogen refueling station comprises a first hydrogen storage bottle group, a first control valve, a second hydrogen storage bottle group, a second control valve, a third control valve and a fourth control valve, the end part of the first hydrogen storage bottle group is connected with a first pipeline, and the first control valve is arranged on the first pipeline; a second pipeline is arranged at the end part of the second hydrogen storage bottle group; the second control valve is arranged on the second pipeline; the first hydrogen storage bottle group is communicated with an outlet of the second pipeline through a third pipeline; the third control valve is arranged on the third pipeline; the second hydrogen storage bottle group is communicated with an outlet of the first pipeline through a fourth pipeline; the fourth control valve is arranged on the fourth pipeline; controlling the first control valve and the second control valve to be closed and controlling the third control valve and the fourth control valve to be opened under the condition that the continuous filling frequency of the second hydrogen storage bottle group is greater than or equal to the preset frequency; and controlling the first control valve and the second control valve to be opened under the condition that the continuous filling frequency of the first hydrogen storage bottle group is greater than or equal to the preset frequency.

The invention relates to the technical field of photovoltaic energy storage methods, and discloses a method for optimizing hybrid photovoltaic energy storage based on a Perturbobserve algorithm, which comprises a load, a photovoltaic power generation subsystem, an energy storage subsystem, a control and management system and a grid-connected system. The specific control method comprises the following steps: S1, obtaining an illumination intensity value within one day through a meteorological station, and obtaining a power grid net load value within one day through a voltage sensor and a current sensor; s2, taking economy optimization as a target, considering photovoltaic energy storage capacity constraints, and establishing an energy storage SOC control strategy target function; and S3, solving is carried out by using a PerturBobserve algorithm, and an optimal control pulse sequence is obtained. By optimizing the charging and discharging time and intensity of the energy storage battery, the consumption rate of photovoltaic power generation is maximized, the light abandoning phenomenon is reduced, and the energy loss in the charging and discharging process is reduced. Meanwhile, the PertuBobserve algorithm can avoid the excessive charging and discharging of the energy storage battery while considering the system load, prolongs the service life of the battery, and solves the problem of insufficient management of the service life of the battery in a traditional method.

The utility model is suitable for the technical field of garbage classification, and provides a garbage classification throwing station which is provided with a box body, a frame, an overturning plate, a limiting plate and a lifting mechanism, in the garbage throwing process, the overturning plate can be driven by the gravity of garbage to overturn downwards, and after the garbage falls into a garbage can, the overturning plate is reset under the action of a reset torsion spring, so that the garbage can be automatically thrown into the garbage can. The reset overturning plate can block the throwing opening of the dustbin body, the phenomenon that garbage smell is diffused all around is effectively avoided, in addition, in the process that the lifting mechanism drives the frame to move from top to bottom, the limiting plate limits the overturning plate, the overturning plate can extrude and compress garbage in the dustbin, and therefore the space of the garbage is reduced, and the garbage utilization rate is improved. And the replacement frequency of the dustbin is reduced.

The invention relates to the field of waterproof sealing materials, and discloses a composite high-weather-resistance rubber waterstop which is composed of an outer layer, a middle layer and an inner layer. The outer layer contains 3%-8% of nano titanium dioxide, 2%-5% of nano zinc oxide, 50%-70% of a rubber matrix and 1%-3% of an ultraviolet light absorber, and the total proportion of the outer layer is 10%-20%. The middle layer is composed of 70%-85% of EPDM, 5%-10% of carbon fiber and 5%-10% of plasticizer, and the total proportion of the middle layer is 60%-75%. The inner layer is a dynamic covalent bond rubber material and contains 5%-10% of a vulcanizing agent and 1%-3% of an antioxidant, the rubber material accounts for 80%-90%, and the inner layer accounts for 15%-25% in total. Through a multi-layer composite structure, a dynamic covalent bond self-repairing material and an optimized vulcanization process, the comprehensive performance of the water-stop belt is remarkably improved, and particularly the durability and the service life of the water-stop belt in a long-term exposure environment are improved.

The invention discloses a water purifier with a layered filter element structure, and relates to the technical field of water purifiers, and the water purifier comprises a composite mechanism. According to the water purifier with the layered filter element structure, through the design of the composite mechanism, liquid enters from the feeding pipe and then is filtered through the layered filter element, impurities in the liquid are adsorbed, and the inner wall of the composite shell is scraped through the scraping mechanism, so that the effect of cleaning the impurities on the surface is achieved, excessive precipitation of the impurities is prevented, and the service life of the water purifier is prolonged. Impurities enter the output mechanism after being precipitated, filtered liquid flows towards the discharging pipe, follow-up treatment is facilitated, the treatment mechanism clamps the layered filter element, so that the rapid fixing effect is achieved, follow-up disassembly and replacement are facilitated, and the effects that the equipment can work for a long time, and the efficiency is improved are achieved. And the service life of equipment is prolonged.

The invention discloses a titanium alloy weld joint fatigue life prediction method considering plasma welding process key parameters and a loading mode, and relates to the technical field of welding. Comprising the following three parts: firstly, detecting internal defect total information of a welding component with known process parameters by controlling welding process parameters and using a combined welding seam defect detection method; secondly, establishing a data model between the process parameters and the defect information of the welding component through a correlation analysis and random modeling method; and finally, through a fatigue experiment and high-precision simulation, establishing a prediction method for the fatigue life of the titanium alloy in consideration of the process parameters and the loading form. According to the method, the fatigue life of the weld joint structure under the action of the complex load stress spectrum can be predicted, the fatigue performance of the structure can be completely and accurately evaluated, guidance can be provided for welding engineers, optimization of welding design, selection of a proper welding process and adoption of corresponding post-welding treatment measures are helped, and the welding quality is improved. The fatigue performance of the welding seam structure is improved; and the service life is prolonged.

The utility model relates to the technical field of hydraulic supporting rod protection, and discloses a hydraulic supporting rod protection structure which comprises a hydraulic rod, fixing supports are installed at the top and the bottom of the hydraulic rod respectively, a motor support is installed at the top of the hydraulic rod, and a motor is installed at the bottom of the motor support. The inner side of the fixing support is connected with a threaded rod through a bearing, and the inner side of the threaded rod is meshed with a gear cleaning mechanism. And the gear cleaning mechanism is connected with the hydraulic rod in a sleeving mode and comprises a spraying gear and a cleaning gear, a water injection groove is formed in the outer side of the spraying gear, a nozzle is formed in the inner side of the spraying gear, and a cleaning layer is arranged in the cleaning gear. According to the hydraulic supporting rod protection structure, the working efficiency can be improved through the gear cleaning mechanism, manual cleaning of the hydraulic supporting rod is time-consuming and labor-consuming, the surface of the rod body can be directly cleaned through the gear cleaning mechanism, and therefore the labor cost and the time cost are reduced.

The invention discloses a pressure self-adaptive adjustment and control system for a silica gel catheter, and relates to the field of self-adaptive adjusting.The pressure self-adaptive adjustment and control system comprises a pressure sensing module, a data statistics module, a data processing module, a pressure prediction module and an intelligent control module. The reflux prevention pressure and the excessive prevention pressure of the silica gel catheter are accurately adjusted; the historical pressure comprehensive performance value and the real-time pressure comprehensive performance value are combined, so that the prediction accuracy is improved; the reliability of sensing data is ensured by monitoring whether the data transmission of each module is abnormal or not, when the data transmission is abnormal, a problem module can be quickly positioned, the troubleshooting and repairing speed can be accelerated, and meanwhile, the use safety of the silica gel catheter is improved.

The invention relates to an electrode material for lithium extraction, a preparation method of the electrode material, a lithium extraction electrode and a lithium extraction system, belongs to the field of salt lake lithium extraction, and solves at least one of the problems of fast capacity fading, relatively low overall lithium extraction efficiency and short service life of a lithium extraction electrode for an alkaline solution in the prior art. A preparation method of an electrode material for lithium extraction comprises the following steps: mixing an electrode active material with a rare earth salt solution, and forming a phosphate rare earth layer on the surface of the electrode active material in an in-situ coating manner; the electrode active material comprises lithium iron phosphate and a doped derivative thereof. When the preparation method, the obtained electrode material, the lithium extraction electrode and the lithium extraction system are applied to lithium extraction of salt lake brine, especially alkaline brine, at least one of the cycle performance, the lithium extraction efficiency and the service life is remarkably improved.

The invention relates to an automatic vertical ring rolling mill. The technical problems that an existing ring rolling mill is low in automation degree, and a core roller is prone to bending are mainly solved. According to the technical scheme, the automatic vertical ring rolling machine comprises a rack, a motor, a speed reducer, a main body rack, an oil cylinder base, a driving roller, a hydraulic oil cylinder, a machine body main shaft, a transmission shaft, a core roller bearing seat, a lower base, a fixed supporting seat, a core roller, a roller holding machine body, a bearing seat driving oil cylinder and a self-aligning roller bearing. A motor and a speed reducer are arranged at the upper end of the rack, the speed reducer is connected with one end of a transmission shaft, self-aligning roller bearings are arranged at the shaft diameter position of the transmission shaft, and the self-aligning roller bearings are installed on the upper portions of the two sides of the main body rack. The driving roller is installed on the transmission shaft, the lower end of the machine body spindle is connected with a nut arranged on the bottom face of the fixed supporting seat, the roller holding machine body is installed at the upper end of the main machine frame and connected with the hydraulic oil cylinder, and the core roller is installed on the core roller bearing seat which is arranged on the fixed supporting seat.

The invention provides nickel-carbon conductive shielding foam. The nickel-carbon conductive shielding foam sequentially comprises a conductive layer, foam, a bonding layer and an isolating layer from top to bottom, the foam comprises 25 to 40 parts of nickel-carbon nanotube-cerium oxide composite powder, 1 to 5 parts of an ionic liquid dispersant, 10 to 25 parts of organic silicone oil, 20 to 40 parts of silicone rubber, 5 to 10 parts of polyfuran, 5 to 10 parts of maleimide, 0.5 to 3 parts of a silane coupling agent, 0.01 to 0.1 part of a platinum catalyst and 0.2 to 1.5 parts of a cross-linking agent. The conductive foam can effectively restrain high-frequency electromagnetic interference generated in modern electronic equipment and ensure normal work of the equipment. A self-repairing system is constructed by adding polyfuran and maleimide. When the foam generates cracks under the action of mechanical stress or thermal cycle in the using process, the self-repairing material can automatically repair a conductive network through a reverse Diels-Alder reaction, and the shielding performance and the conductivity of the material are recovered.

The invention discloses an ecological cabin airflow regulation control device and method, and belongs to the field of ecological cabin airflow regulation. An air flow adjusting and controlling device of an ecological cabin comprises a cabin wall, and further comprises a circulating unit arranged on the cabin wall and used for exchanging air inside and outside the cabin; the filtering mechanism and the second filtering plate are arranged in the circulating unit and used for blocking impurities in air during exchange, a driving mechanism and a first cleaning mechanism are arranged in the circulating unit, and the driving mechanism can drive the first cleaning mechanism to reciprocate along the filtering mechanism; a flow guide mechanism communicated with the first cleaning mechanism is arranged on one side, close to the filtering unit, of the cabin wall; according to the invention, the problems of non-uniform air distribution, high working intensity of the air filtering assembly, unstable air circulation speed and poor air quality when the ecological cabin is used for adjusting and controlling the air flow can be solved.

The invention discloses a coal mine shaft crack identification method in a non-illumination environment based on an optical fiber sensing grating, and belongs to the field of coal mine shaft disease detection. According to the method, distributed optical fibers form an optical fiber sensing grating, the optical fiber sensing grating is fixed on the surface of a well wall, an optical fiber demodulator is used for collecting strain along the optical fibers, a blank blind area of the optical fiber sensing grating is filled through an interpolation algorithm, and a strain field image data set of the well wall is obtained; and a CCD industrial camera is matched to shoot a well wall crack image sample at the optical fiber sensing grating, binarization processing is carried out, and a well wall crack image data set is established. And establishing a well wall crack identification model based on deep learning, introducing two parallel feature extraction branches, respectively receiving an optical fiber strain field image data set and a well wall crack image data set, and performing feature extraction and fusion of the two different types of data sets through training. Because the strain data is sensed through the optical fiber, the illumination environment is not needed, and after the model training is completed, the identification and early warning of the well wall crack in the illumination-free environment can be realized only by inputting the optical fiber strain data acquired in real time into the trained model.

The invention discloses an organic solvent recovery device. The device comprises a pretreatment mechanism, an adsorption mechanism, a steam furnace and the like. The pretreatment mechanism is provided with a filter and a cooler for primarily treating a solvent; the adsorption mechanism is composed of a spiral activated carbon plate, a central electrode and an interlayer electrode, the adsorption process of a solvent is optimized through an electric field, and the service cycle of an adsorption material is prolonged. A vacuum adsorption pump is further arranged in the adsorption mechanism, and the adsorption effect of solvent steam is enhanced by generating a vacuum environment. In addition, the device is further provided with a reversible power supply, reverse regeneration of the adsorption material can be achieved, and the replacement frequency is reduced. The steam furnace is connected with the adsorption mechanism, and solvent recovery is conducted through steam heating. And the rear end of the device is connected with a chimney discharge system to ensure that waste gas discharge meets environmental protection requirements. Through the double adsorption mechanisms and the innovative electrode design, the recovery efficiency is remarkably improved, the operation and maintenance cost is reduced, the environmental protection standard is met, and high economic benefits and social benefits are achieved.

The invention relates to the technical field of scrap steel crushing and recycling, and provides a scrap steel crushing and recycling device and method, the scrap steel crushing and recycling device is used for scrap steel crushing, the scrap steel crushing and recycling device comprises a shell, a feeding port, a discharging port and a crushing cavity are formed in the shell, the feeding port and the discharging port are both communicated with the crushing cavity, and a mounting port is further formed in the top of the shell; the crushing hammer is rotationally arranged in the crushing cavity and is used for crushing waste steel; the mounting frame is rotationally arranged on the mounting opening and is provided with a plurality of mounting grooves; the multiple lining plates are arranged in the mounting groove, one ends of the lining plates are located in the crushing cavity, the crushing hammer knocks the waste steel to make the waste steel make contact with the lining plates, and after the mounting frame is overturned, the other ends of the lining plates are located in the crushing cavity. According to the technical scheme, the problem that a lining plate in a hammer crusher in the prior art is continuously hit by scrap steel, is easy to wear and needs to be frequently replaced is solved.

The induction type automatic scattering mechanism comprises an equipment frame, a line body and a bowl body, a supporting frame is installed on an installation frame, and a probe type contact sensor is installed at the output end of an air cylinder; a rotary frame is rotationally connected in the butt joint frame, and a driving piece for controlling the rotary frame to swing is arranged on the material scattering nozzle; a pressing structure is arranged on the sliding connection frame, and a limiting piece is arranged on the outer side of the butt joint frame. According to the powder sagger, firstly, materials can be more uniformly distributed in the sagger body through accurate track control, the quality and consistency of powder sagger filling are improved, the requirement of the production technology for material scattering precision is met, secondly, abrasion and corrosion of impurities to the screen are reduced, the replacement frequency is reduced, and the production efficiency is improved. Therefore, the purchasing cost of the screen and the labor cost required by replacement are reduced, finally, the replacement process of the screen is simple, the replacement efficiency is improved, the requirement for the skill of an operator is reduced, and the replacement work is more convenient.

The invention relates to the technical field of green belt trimming application, in particular to an automatic highway green belt trimming device which comprises a cross beam, a limiting assembly, a trimming assembly and a smashing assembly.The automatic highway green belt trimming device is exquisite in design, compact in size and capable of working under the condition of not occupying too much space; the cross beam serves as a main structural part, the supporting legs are vertically fixed to the bottom end of the cross beam, the advancing wheels are installed at the bottom ends of the supporting legs, and through the design, the device can move front and back on an expressway without occupying too much lane space, pruning work can be completed without arranging a roadblock, integration of a hub motor enables the advancing wheels to have the self-walking function, and the practicability is high. Therefore, the trimming device can move autonomously without additional traction or pushing force, the self-walking function greatly improves the efficiency of trimming operation, reduces the labor intensity of workers, and enables the trimming operation to be more flexible and quicker.

The present invention relates to the technical field of waterproofing coiled materials, and discloses a composition for polyvinyl chloride waterproofing coiled materials, a polyvinyl chloride waterproofing coiled materials, and a preparation method and application thereof. The composition contains polyvinyl chloride, ethylene-vinyl acetate-carbon monoxide copolymer, a plasticizer, a filler, expandable microspheres, a crosslinking agent, and an antioxidant; relative to 100 parts by weight of polyvinyl chloride, the content of ethylene-vinyl acetate-carbon monoxide copolymer is 10-40 parts by weight, the content of the plasticizer is 35-50 parts by weight, the content of the filler is 20-55 parts by weight, the content of the expandable microspheres is 1-3 parts by weight, the content of the crosslinking agent is 1-3 parts by weight, and the content of the antioxidant is 0.1-0.4 parts by weight. The polyvinyl chloride waterproofing coiled material not only has strong tensile strength and elongation, but also has good waterproof function while being able to insulate and heat.

The invention discloses an electric energy information acquisition and management method for an electric power system, and the method is characterized in that the method comprises the steps: S1, obtaining electric quantity, voltage and current data in real time through an electric energy acquisition device, and transmitting the data to a data acquisition system; s2, performing data cleaning, calibration, denoising and data visualization operation on the acquired electric quantity, voltage and current data; s3, performing energy consumption monitoring analysis according to the processed electric energy data, identifying an energy consumption peak period, and executing corresponding energy-saving measures for optimization; and S4, based on an optimization result, performing energy supply prediction by using a neural network. According to the invention, the neural network is introduced for power data acquisition, intelligent prediction of future energy demands is realized, and the problem of energy use optimization based on data driving is solved.

The invention relates to a device and a method for testing the concentration of an oil-displacing agent for an oil field, and relates to the technical field of concentration testing of oil-displacing agents. Comprising an equipment box, an extraction probe, an impurity filter and a detector, wherein the impurity filter comprises an impurity filter cartridge and an ultrafiltration roll membrane arranged in the impurity filter cartridge; the detector is used for testing the concentration of the oil-displacing agent on the sample filtered by the impurity filter; according to the impurity filter, the ultrafiltration roll membrane can be folded for multiple times to perform multi-stage filtration on a sample, the sample filtration effect is greatly improved, the ultrafiltration roll membrane can be replaced in a telescopic mode, the replacement efficiency of the ultrafiltration roll membrane is greatly improved, and the replacement cost of the ultrafiltration roll membrane is reduced. The complex operation of manual replacement is avoided; and the used part of the telescopic and movable ultrafiltration roll membrane can be flushed, so that the repeated utilization of the ultrafiltration roll membrane is ensured, the replacement frequency of the ultrafiltration roll membrane is greatly reduced, and meanwhile, the service life of the ultrafiltration roll membrane is effectively prolonged.

The invention relates to the technical field of cable processing, in particular to a non-stop disc-changing cutting device for middle-high voltage cable processing, which comprises a control table and a rotating disc arranged on the control table, cutting assemblies are symmetrically arranged on the rotating disc, and each cutting assembly comprises a swinging arm arranged on the rotating disc and a supporting plate arranged on one side of the swinging arm. The fixed rotating shaft is arranged on one side of the supporting plate, the matched clamping knife is arranged on the fixed rotating shaft, the hydraulic rod is arranged on the swing arm, the clamping column is movably arranged at the end, away from the swing arm, of the hydraulic rod, the containing base is arranged on the clamping column, and the cutting knives are symmetrically and movably arranged on the containing base. When the cutting knife cannot smoothly cut off the cable, the function of automatically replacing the cutting knife is achieved, meanwhile, in the whole process, the replaced cutting knife can conduct reverse cutting, the whole cable cutting difficulty is lowered, and the situation that the cutting knife makes contact with a previous cable cutting face is avoided.

The invention discloses a preparation method of a rapid adsorption conductive lithium ion sieve membrane, and relates to the field of preparation of lithium ion sieve membranes. The invention aims to solve the problems that the traditional lithium ion sieve is too slow in adsorption rate, easy to dissolve and damage in the regeneration process and incapable of meeting industrial requirements. According to the invention, SP-PDA-coated PVDF is used as a base membrane to prepare a PTH-coated HMO conductive polymer, and the PTH-coated HMO conductive polymer is applied to an ESIX process to develop a conductive lithium ion sieve membrane which is good in conductivity, low in manganese dissolution loss and capable of rapidly adsorbing. The method comprises the following steps: 1, preparing an SP-PDA coated PVDF membrane; 2, preparing a PTH-HMO conductive polymer; and 3, preparing the PTH-HMO-SP-PDA-PVDF conductive polymer. The prepared rapid adsorption conductive lithium ion sieve membrane has longer service life, and the replacement frequency and the maintenance cost are reduced. According to the invention, the rapid adsorption conductive lithium ion sieve membrane can be obtained.

The invention provides a composite material underwater oil collecting cover. The composite material underwater oil collecting cover comprises a cover body; a through hole is formed in the top of the cover body and used for being connected with an oil pipe. The cover body is made of a resin-based fiber reinforced composite material; a filter screen; the baffle is arranged at the through hole; the filter screen is made of a resin-based fiber reinforced composite material; horizontal opening pressing is conducted; the cover is arranged on the cover body; and the supporting legs are arranged at the bottom of the cover body and are made of resin-based fiber reinforced composite materials. The composite material underwater oil collecting cover is prepared from a resin-based fiber reinforced composite material, is light in weight, has corrosion resistance, can be repeatedly used, does not need additional anodic protection, reduces the weight of the whole oil collecting cover, also reduces the requirements on a lifting appliance of an oil collecting ship, and can be used as an equipment protection cover.

According to the high-safety drilling and anchoring integrated trolley applied to the technical field related to drilling and anchoring trolleys, through arrangement of the outer circulation unit, when an oil cylinder works, hydraulic oil can be continuously circulated outside the cylinder, continuous impurity interception is achieved, and compared with the prior art, the service life of the hydraulic oil can be effectively prolonged, the replacement frequency is reduced, and the production efficiency is improved. Meanwhile, the influence of granular impurities on construction is effectively reduced; in the process of carrying out extracorporeal circulation filtration on hydraulic oil, along with increase of impurities intercepted on the movable filter screen and reduction of permeability, the resistance of the movable filter screen to the hydraulic oil is increased, then the thrust of the hydraulic oil borne by the movable filter screen is increased, the hydraulic oil gradually and spontaneously falls into the screen falling bag, and the next movable filter screen with good permeability can continue to carry out impurity interception; and in cooperation with the arrangement of the falling net monitoring unit, the falling situation of the multiple movable filter nets can be monitored, workers can conveniently carry out corresponding treatment in time, and then the service life of hydraulic oil is effectively guaranteed.

The utility model discloses a double-shaft crushing device for a construction waste crusher, which relates to the technical field of crushers and comprises a support table, two motors are fixedly mounted at the upper end of the support table and are respectively and electrically connected with an external controller through connecting wires, and a crushing box is fixedly mounted on the support table between the two motors and is electrically connected with the external controller through connecting wires. Couplings are fixedly mounted on two sides of the crushing box, two crushing rollers are movably mounted in the crushing box, each crushing roller further comprises a rotating shaft, a plurality of tool aprons and a connecting shaft, the plurality of tool aprons are fixedly mounted on the outer side of the rotating shaft, and a plurality of tool bits are fixedly mounted on the outer sides of the tool aprons. A plurality of detachable tool bits are arranged on the outer side of the tool apron, so that the replacement frequency of the tool apron can be reduced, and the service life of the tool apron is prolonged; and the first limiting block, the second limiting block, the adjusting screw rod and other parts are arranged in the two connecting shafts correspondingly, so that the rotating shaft can achieve the rapid disassembly and assembly function in the crushing box through the two connecting shafts, and the overhaul and maintenance efficiency of the whole crushing roller is improved.

The gearbox comprises a machine body, a supporting rod is installed at the bottom of the machine body, a rotating cover is rotationally connected to the side end of the machine body, fan blades are installed in the rotating cover, a partition plate is installed at the bottom of the inner wall of the machine body, and a driving motor is installed at the upper end of the partition plate; a transmission shaft is installed at the output end of the driving motor, a gearbox is installed in the middle of the transmission shaft, and a ventilation pipe is connected between the driving motor and the inner wall of the machine body. Through the arrangement of the mounting frame, the gear ring, the extrusion ring, the scraping plate, the closing plate, the electric push rod A and the cleaning adsorption mechanism, scrap iron on the surface of the filter element can be adsorbed, the problem that the filter element is blocked by the scrap iron is avoided, and therefore circulation of engine oil in the gearbox of the wind driven generator can be ensured; the problem of overheating of equipment caused by temperature rise due to unsmooth flowing of internal engine oil can be avoided, and insufficient lubrication and overheating of the interior of the gearbox of the wind driven generator can be prevented.

The invention discloses a manufacturing method of a second type low-smoke halogen-free standard wall cable of a motor train unit, which relates to the technical field of cables and comprises the steps of conductor preparation, insulation extrusion, buffer isolation layer forming, shielding layer manufacturing, reinforced core preparation and installation, sheath extrusion and post-processing. The conductor is prepared by layering and twisting cerium-titanium alloying copper monofilaments and treating the cerium-titanium alloying copper monofilaments through a nano ceramic coating; post-processing detection shows that the cable is small in bending radius, low in electrical and mechanical performance attenuation rate after repeated bending, excellent in electrical performance, mechanical performance, fireproof performance, environmental protection performance and the like, capable of effectively meeting the cable use requirements under complex working conditions of the motor train unit, capable of guaranteeing the operation reliability and safety, capable of improving the comprehensive performance of the cable and wide in application range. The cable is suitable for power and signal transmission in rail transit fields such as motor train units.

The invention discloses a reboiling device for a ship tail gas carbon dioxide trapping system, and belongs to the technical field of ship tail gas treatment. A reboiling device for a ship tail gas carbon dioxide capture system comprises a main box body, a control part is arranged on the main box body, two groups of mutually communicated cavities are arranged in the main box body, the reboiling device further comprises at least one group of heat pipe bundles fixedly installed on the main box body, the circuitous end of each heat pipe bundle extends to one cavity, and the other end of each heat pipe bundle extends to the other cavity. A heat pipe bundle sealing head is fixedly mounted at a pipe opening of the heat pipe bundle; through free combination and use of the multiple stages of heat pipe bundles, each stage of independent pipe bundle can be connected with other heat pipe bundles in parallel or in series, the same or different heating media are used and are not limited to steam, smoke, hot oil, hot water and the like, various low-temperature waste heat sources on a ship can be used for waste heat recycling, and the overall heat efficiency of the whole ship is improved.

The invention provides a photocatalytic composite material based on fly ash as well as a preparation method and application thereof, and belongs to the technical field of environment-friendly materials. According to the composite material, industrial waste fly ash and bismuth vanadate (BiVO4) are effectively compounded, so that the composite material shows excellent photocatalytic performance, especially can efficiently degrade organic pollutants such as formaldehyde under visible light irradiation, and has good stability and reusability. According to the composite material disclosed by the invention, the preparation cost is remarkably reduced, the resource utilization of the fly ash is also realized, and remarkable environmental protection and economic benefits are embodied. The material is particularly suitable for the fields of indoor air purification, wastewater treatment and other environmental pollution treatment, and can effectively improve air quality, protect human health and promote sustainable development. The photocatalytic composite material shows excellent catalytic efficiency in practical application, is high in adaptability and has a wide application prospect.