39results about How to "Reduce cost pressure" patented technology

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.

According to the marine transportation data periodic acquisition and scheduling system applied to international logistics provided by the invention, the operation end can set the corresponding scheduling rule for each tenant according to the data acquisition requirements of different tenants, and store the set scheduling rule in the scheduling rule table; in this way, different data acquisition frequencies can be set for different tenants, the tenants can set different acquisition frequency requirements for different data sources under multiple acquisition data sources, the expansibility is high, different data acquisition frequencies can be set according to logistics nodes, and then the cost of a server is reduced to a great extent; the user side can form a data acquisition task by using the user information of the tenant and the related information and then send the data acquisition task to the data processing side, and the data processing side can acquire and clean the logistics data according to the data acquisition task after receiving the data acquisition task sent by the user side.

The application discloses a busbar structure of a comprehensive distribution box, relates to the technical field of busbar structures of distribution boxes, and is used for parallel connection of multiple circuit breakers and comprises a main conducting bar and multiple wiring terminals, further comprises a supporting base, a bracket, a spacing adjusting unit, a locking unit and a pressing unit, the spacing adjusting unit is used for adjusting the equidistant distribution distance between the multiple wiring terminals, the locking unit is used for locking the position of the spacing adjusting unit, and the pressing unit is used for locking the fitting position between the main conducting bar and the multiple wiring terminals. Advantages are that: the equidistant synchronous adjustment of the spacing between the wiring terminals is realized by the spacing adjusting unit to adapt to different circuit breaker specifications, and the independent detachable design of the wiring terminals is utilized to realize the quick replacement of single circuit breakers, so that the maintenance operation is greatly simplified while the mold opening cost and the inventory pressure are reduced, the problem that all normal circuits need to be removed due to the maintenance of a single circuit breaker is avoided, the power-off time is shortened, and the maintenance cost is reduced.

The invention relates to a recycling method of a waste lithium battery. The method comprises the following steps: S1, discharging the waste lithium battery to obtain a battery to be smelted; s2, under the oxidizing atmosphere, the mixture is smelted, and a metal phase and a slag phase are formed; the oxidizing atmosphere comprises oxidizing gas and inert carrier gas, the volume content of the oxidizing gas is 21%-40%, and the percentage is the ratio of the volume of the oxidizing gas to the volume of all gases in the oxidizing atmosphere; the mixture comprises a smelting additive and the battery to be smelted. According to the recycling method, the raw material pretreatment process is simple, energy consumption is low, metal separation is easy, and the recycling rate of lithium, nickel, cobalt and copper can reach 95% or above.

The invention belongs to the technical field of sodium ion battery negative electrode materials, and discloses a soy sauce residue-based hard carbon negative electrode material, a preparation method and an application of the soy sauce residue-based hard carbon negative electrode material in a sodium ion battery. The method comprises the steps of pre-oxidation, inorganic acid washing, organic solvent cleaning and high-temperature carbonization, the core technology idea of pre-oxidation driven synergistic purification is initiated, the core technology idea is organically combined with the subsequent high-temperature carbonization process, the pretreatment bottleneck of industrialization of preparation of hard carbon from soy sauce residues is overcome, and the method is suitable for industrial production. The high-grease soy sauce residues are efficiently and economically purified through pre-oxidation, and a primary barrier is cleared for preparing hard carbon by utilizing the soy sauce residues on a large scale; the precise reconstruction of the microstructure of the hard carbon material is synchronously realized, and the obtained hard carbon material has high reversible specific capacity and good initial coulombic efficiency; a high-performance product can be obtained at a relatively low carbonization temperature due to the pure precursor, so that the energy consumption and the production cost are reduced. The invention provides a scheme for preparing the sodium ion battery hard carbon negative electrode with low cost and high performance.

The invention belongs to the field of chemical production, and discloses a method for preparing high-oil-absorption and high-reinforcement white carbon black by using fluorine-containing silicon slag, which comprises the following steps: adding liquid-containing fluorine-containing silicon slag into a hot aluminum hydroxide solution to react until the liquid-containing fluorine-containing silicon slag is clear, and adding water to dilute to obtain a solution A; heating the solution A, adding dilute sulphuric acid in stages to neutralize to a target pH value, stirring, filtering, and carrying out countercurrent washing on the silica gel with pure water until the conductivity of washing water reaches the standard; adding an organic azeotropic solvent into the desalted silica gel, heating and preserving heat, and evaporating out part of the solvent to obtain a white carbon black primary product; and calcining the primary product at 500-800 DEG C, and crushing to obtain the target white carbon black. According to the invention, high-value utilization of the fluorine-containing silicon slag is realized, and the problems of poor reinforcing effect, low oil absorption value and insufficient activity of a traditional process product are solved.

This invention discloses a device type identification method, terminal device, and storage medium based on traffic sampling. It eliminates the need to collect complete device traffic data; device identification is achieved simply by sampling traffic at the gateway. To address the issue of missing traffic features, traditional tensor imputation algorithms learn the embeddings corresponding to tensor rows, columns, and depths, but cannot generalize to unknown rows, columns, or depths. This results in repeated retraining, time-consuming and costly feature imputation. This invention proposes an inductive tensor imputation method that utilizes historical information to learn and generate embedding functions, enabling fast and effective device traffic feature imputation.

The present invention discloses a method for reducing the contact resistance of a flexible graphite composite bipolar plate and quickly adjusting the thickness, and belongs to the technical field of proton exchange membrane fuel cell materials. The present invention can prepare flexible graphite composite bipolar plates of any thickness by separately preparing two outer and inner prefabricated flexible graphite plates of fixed thickness, and then combining and stacking them according to the thickness requirements of the final product and then hot-pressing them. Among them, the outer side of the outer prefabricated plate can greatly reduce the contact resistance after being treated by the method disclosed in the present invention. The advantages of the present invention are that the product thickness can be adjusted quickly, the production efficiency is high, the surface contact resistance is low, and it is not easy for powder to fall off and block the pipeline. The process is dry and wet separated, which is convenient for reducing workshop pollution.

The application provides a pickling unit automatic speed control method and system based on multi-factor constraints, and relates to the technical field of cold-rolled strip steel production. In view of the defects that the existing control relies on manual operation or primary automation and is difficult to cope with multiple constraints and instantaneous working conditions, the method comprises the following steps: constructing a multi-factor constraint model covering process, equipment, logistics, acid liquid and instantaneous working conditions; collecting corresponding data in real time; dynamically calculating a global optimal speed setting value through multi-layer decision logic, calculating a basic speed first and then superimposing an instantaneous working condition constraint, and directly triggering emergency disposal through high-priority alarm; issuing an instruction for execution and closed-loop feedback, and combining machine learning for self-learning optimization. The application realizes automatic intelligent control of the unit speed, guarantees quality and equipment safety, improves production efficiency and continuity, and reduces energy consumption cost.

The application belongs to the technical field of data processing, and provides a new energy station time sequence data access system and method, and the technical scheme is as follows: message data directly sent and forwarded by new energy stations of different sources is acquired; the parsed message data is converted into an adaptive data file, and the measurement points in the adaptive data file are respectively labeled with index labels and unconfigured labels according to a pre-configured measurement point table, an index table and a measurement point index relationship table, and then are packaged; a time sequence library serial number is determined according to a sequence number corresponding to a station code, address information of the time sequence library is found in a time sequence information table; and the data after adaptive processing is written into the corresponding time sequence information table according to the found address information of the time sequence library. The application supports the expansion of the time sequence database, solves the assimilation processing of heterogeneous data sources, reduces the maintenance cost in the later stage, and finally solves the problem of redundant data storage.

The invention belongs to the technical field of waste treatment, and discloses a radioactive slurry microwave curing treatment device which comprises the following steps: a waste liquid recycling device: performing centralized treatment on slurry waste, collecting waste liquid and feeding the waste liquid into a microwave evaporation furnace; after the waste liquid is recycled, the slurry enters the microwave evaporation furnace through an efficient conveying pipeline, and the microwave evaporation furnace removes moisture in the slurry through microwave heating; the glass raw material adding device is used for uniformly mixing the dried slurry dry material with a glass raw material in a preset proportion in a mixing screw mechanism to form a material suitable for melting; the mixed materials are conveyed into the microwave melting furnace through a screw; rapidly heating the materials to 1400 DEG C by utilizing microwave heating; in the microwave secondary combustion chamber, tail gas generated in the melting process enters the microwave secondary combustion chamber, and secondary heating is carried out to remove harmful substances such as dioxin in the tail gas; according to the tail gas treatment device, after passing through the microwave secondary combustion chamber, dust in tail gas is removed through a dust removal device and a spraying device, and cleanliness of exhausted gas is guaranteed.

The invention relates to the technical field of mineral processing, and provides a method for recycling titanium concentrate from reselection spiral tailings, which comprises the following steps of: concentrating and dehydrating the reselection spiral tailings to obtain concentrated ore pulp; the concentrated ore pulp is subjected to first-stage iron removal treatment, and ferromagnetic iron minerals are removed; first-stage strong magnetic separation is conducted on the ore pulp obtained after first-stage iron removal treatment, and first-stage strong magnetic concentrate is obtained; grinding and grading the first-stage strong magnetic concentrate; carrying out second-stage iron removal treatment on the ore grinding and grading pulp; second-stage strong magnetic separation is conducted on the ore pulp obtained after second-stage iron removal treatment, and second-stage strong magnetic concentrate is obtained; the second-section strong magnetic concentrate is sequentially subjected to concentration and third-section iron removal treatment, and flotation feed ore is obtained; and the flotation feed ore is subjected to flotation, and titanium concentrate is obtained. According to the method, the titanium concentrate can be efficiently recycled from the reselection spiral tailings at low cost, the titanium resource utilization rate is increased, and the tailings storage cost and the environmental protection pressure are reduced.

The application discloses an exosome purification preparation method and medicinal composition for hemorrhagic stroke, relates to the field of hemorrhagic stroke exosome preparation, and first collects a serum-free culture supernatant of human umbilical cord mesenchymal stem cells, removes complete cells, cell fragments and large-particle-size vesicles in the supernatant by low-speed and medium-speed two-stage pre-centrifugation, concentrates the supernatant through an ultrafiltration tube to obtain an exosome crude extract; the crude extract is loaded into an affinity chromatography column coated with an anti-human thrombin monoclonal antibody, and specific adsorption is performed to remove coagulation-related impurities such as a blood coagulation factor, fibrinogen and prothrombin complex compound in the crude extract. The exosome medicinal composition prepared by the application has no blood coagulation activity impurity residue, can avoid the risk of inducing intracranial secondary hemorrhage after medication, is completely suitable for the special medication safety requirements of hemorrhagic stroke, has high purity, excellent biological activity reservation and no immunogenic adverse reaction risk.

The application discloses a deletion mutant of a rice LHCB5 gene and application thereof, and belongs to the field of gene editing. Through gene editing system, the 3'UTR region of the rice LHCB5 gene is precisely edited, and a 40bp homozygous deletion mutant of +16 to +55bp downstream of the termination codon TAA is obtained. The mutant can be stably inherited, and the growth phenotype is not significantly different from that of the wild type. Meanwhile, the resistance to rice blast and bacterial leaf blight is significantly improved, and the length of the disease spot is significantly reduced. The application first discloses the disease resistance regulation function of the 3'UTR of the LHCB5 gene, realizes the improvement of the disease resistance through the editing of the non-coding region, avoids the safety and agronomic trait risks brought by the transgene and the coding region editing, and the obtained mutant can be directly used for the breeding of the rice broad-spectrum disease resistance, and has important application value.

The invention belongs to the technical field of mechanical structures, and particularly relates to a hybrid power system of a combine harvester and a control method thereof, the hybrid power system comprises a master controller, a battery assembly, a generator, a threshing mechanism, a header conveying mechanism, a diesel engine, a walking mechanism, a fan device and an auger vibrating screen mechanism. The battery assembly and the generator are electrically connected with the master controller. The diesel engine is electrically connected with the master controller through the engine controller; the threshing mechanism and the header conveying mechanism are electrically connected with the master controller through the electric drive unit. The power output end of the diesel engine is sequentially connected with the fan device, the walking mechanism and the generator through a first transmission unit, and a clutch I is arranged between the walking mechanism and the diesel engine. And the auger vibrating screen mechanism is in transmission connection with the power output end of the fan device. According to the technical scheme, energy utilization and economical efficiency are both considered, pollutant emission is reduced, endurance and operation efficiency is improved, power transmission control is flexible, mechanism driving modes are diversified, and many disadvantages of a traditional power system are overcome.

This utility model discloses a fixed support structure for water conservancy pipelines, relating to the field of pipeline support technology. It includes two support brackets, with a pipeline clamping assembly fixedly installed at the upper end of each bracket. The pipeline clamping assembly consists of an arc-shaped metal clamping plate, an arc-shaped detachable rubber pad, an insert base rod, a fixing screw, and a rotating handle. By setting the pipeline clamping assembly on the support bracket, and rotating the fixing screw by rotating the handle, the installation and removal of one or more arc-shaped detachable rubber pads can be completed. Since the multiple arc-shaped detachable rubber pads have different curvatures, the clamping range of the pipeline clamping assembly can be flexibly adjusted by increasing or decreasing their number and replacing them with rubber pads of different curvatures, thereby adapting to water conservancy pipelines of different diameters and effectively solving the problem of poor adaptability of traditional fixed support structures.

The invention provides a flash evaporation process for extracting naphthalene from washing oil, and mainly relates to the technical field of extracting naphthalene from washing oil. A flash evaporation process for producing washing oil and extracting naphthalene is based on a single-furnace single-tower naphthalene distillation basic process, comprises the steps of raw material pretreatment, single-furnace single-tower distillation, multi-stage flash evaporation naphthalene extraction, delayed coking collaborative recovery, distillate optimization recovery, intelligent control and safety guarantee, and is also integrated with a waste heat recovery and equipment maintenance auxiliary system. Raw materials are preheated and filtered, naphthalene components in washing oil are separated and recycled through multi-stage flash evaporation gradient negative pressure, and flash evaporation tail gas and'external three-mixing 'fractions are recycled and reused respectively. The method can greatly improve the yield of industrial naphthalene, reduce the naphthalene residue in washing oil, improve the utilization rate of raw materials, and overcome the defects of the prior art.

This utility model discloses a sludge reduction device based on porous packing, belonging to the field of sludge reduction technology. It includes an inlet pipe, a reduction mechanism fixedly connected to its outer surface, a filter assembly movably connected to the inner cavity of the inlet pipe, and an outlet pipe fixedly connected inside the reduction mechanism. A valve is installed on the outer surface of the outlet pipe. Through two aerators and a stirring assembly, air can be supplied to the reaction tank to form a stable aerobic environment, providing sufficient oxygen for the aerobic metabolism of microorganisms and accelerating the decomposition of organic matter in the sludge. Simultaneously, the water flow disturbance generated by aeration and the stirring action of the stirring assembly promote full contact between the wastewater and the biofilm on the porous packing, significantly improving mass transfer efficiency. In this environment, microorganisms can more fully utilize the organic matter in the wastewater, accelerating their own metabolism and sludge decomposition, thus improving sludge reduction efficiency, effectively reducing subsequent sludge treatment costs and environmental pressure, and enhancing the practicality of the device.

The invention provides a natural hydraulic lime-based exterior wall spraying material and a preparation method thereof, and belongs to the technical field of building interior and exterior wall decoration. The formula comprises the natural hydraulic lime, the talcum powder, the white cement, the river sand, the water reducing agent, the bentonite, the water repellent, the polyvinyl alcohol, the defoaming agent and the titanium dioxide, the material can achieve high-quality exterior wall decoration through one-time construction, the construction process is greatly simplified, and the spraying material has the advantages of being environmentally friendly and capable of being widely applied to exterior wall decoration. Meanwhile, excellent crack resistance and self-healing characteristics are achieved, cracks can be effectively prevented from being generated in the face of temperature change, humidity fluctuation and external erosion, and the integrity of an outer wall structure is maintained.

The utility model provides a photovoltaic module with water repellent flow guide structure, including main purlin, the upper end surface of main purlin is fixed with M type support steel frame through fixed bolt, install a plurality of equidistance distribution's horizontal connecting support on M type support steel frame, install photovoltaic board between adjacent horizontal connecting support, and the interval of adjacent horizontal connecting support can be adjusted according to different size photovoltaic board, install vertical connecting support between adjacent horizontal connecting support, vertical connecting support can move along the length direction of horizontal connecting support, vertical connecting support includes the clamping groove for clamping photovoltaic board. Realize horizontal connecting support and vertical connecting support present movable setting, adapt to different size photovoltaic board, the setting of the lower opening of M type support steel frame makes it have roof drainage function, improves the overall durability and applicability.

This application provides a conductive paste that, by introducing inexpensive metals such as nickel and aluminum into the paste, increases the proportion of conductive metals other than silver to a maximum of 50%, significantly reducing the amount of precious silver used, effectively controlling material costs, and alleviating cost pressures caused by soaring silver prices. By controlling the particle size distribution of conductive metals other than silver (D50 is 2-9μm, D100 < 30μm), the paste is ensured to have good permeability and formability during screen printing, without screen clogging or broken grid lines, forming complete and uniform fine grid lines, laying the foundation for high efficiency.

The utility model relates to the technical field of carbon residue separation, in particular to an electrolytic bath electrolyte and carbon residue online separation device which comprises a transfer frame and a carbon residue deposition tank arranged on the transfer frame in a turnover mode. A liquid electrolyte deposition hopper is arranged on the transfer frame and is positioned below the carbon residue deposition tank; the carbon residue deposition tank comprises a plurality of electrolyte guide plates; and a plurality of electrolyte guide holes are formed in the electrolyte guide plate. The quality of carbon residue fishing operation is improved, and the labor intensity of workers is reduced; production power consumption of the electrolytic cell is reduced, and cost pressure is reduced; the electrolyte content in the carbon residues can be reduced, and powerful recovery of the hazardous waste carbon residues is improved; the damage rate of the electrolytic cell is reduced and the service life of the electrolytic cell is prolonged.

The invention relates to the technical field of mobile power sources, in particular to a butt joint type mobile power source and a processing and assembling method.The butt joint type mobile power source comprises a main power source module and at least one auxiliary power source module, the main power source module comprises a main battery cell, a main fixing support, a main control panel and a main power source shell, and the main battery cell is arranged on the main fixing support; the main control panel is arranged at one end of the main power supply shell, the main power supply shell is provided with a main placement cavity, the main fixing support is arranged in the main placement cavity, and the main battery cell is electrically connected with the main control panel; one end of the main power supply shell is provided with a main butt-joint boss, the other end of the main power supply shell is provided with a main butt-joint groove, the main control panel is arranged at one end of the main butt-joint boss, and the main control panel is provided with a main butt-joint jack; a main butt joint plug is arranged on the groove bottom face of the main butt joint groove. According to the invention, the auxiliary power supply modules can be selected to be added or reduced according to actual requirements, so that the overall power supply capacity is adjusted, and the electric quantity requirements in different scenes are met.

This utility model provides a steel frame formwork structure and an L-shaped wall formwork system suitable for L-shaped wall formwork. Multiple frame structures are spliced ​​together in the vertical and horizontal directions by clamping structures. Perpendicular frame structures are fixed by vertical connecting structures. Frame structures located at the inner corner of the L-shaped wall formwork are spliced ​​together by corner structures and fixed to the inner corner frame structures by clamping structures. This modular splicing method replaces the complex assembly process of existing steel frame wooden formwork construction that requires additional connectors. It allows construction personnel to flexibly adjust the size and shape of the wall formwork according to actual project needs without redesigning the entire mold set. This simplifies the connection structure, reduces the weight of the overall formwork structure, eliminates the need for complex on-site assembly operations, effectively shortens construction time, and improves construction efficiency.

The invention relates to the technical field of building materials, in particular to EPS (expandable polystyrene) reinforced foam concrete and a preparation method thereof, and the EPS reinforced foam concrete is prepared from the following raw materials in parts by weight: 50-60 parts of cement, 20-25 parts of water, 0.8-1.2 parts of EPS, 0.8-1.2 parts of foam group, 0.01-0.1 part of rubber powder and 0.4-0.9 part of water reducing agent. Through cooperation of the EPS particles, the foam group, the cement, the water reducing agent and the rubber powder, a light porous structure which takes EPS and closed foam as cores and is extremely low in volume weight is formed, meanwhile, by means of a compact gelling inclusion and a reinforced interface, the material obtains compression resistance and breaking strength far superior to those of conventional foam concrete, shrinkage cracking is effectively inhibited, and the service life of the material is prolonged. The unification of light weight, high strength and toughness is realized.

The utility model discloses a door frame section bar and swing door applying it, and the door frame section bar includes section bar body, first groove type opening structure and second groove type opening structure, and the first groove type opening structure and the second groove type opening structure are diagonally arranged at the both ends of the section bar body. The swing door applies the door frame section bar. The utility model provides a door frame section bar of brand -new structure, and the door frame section bar is provided with the first groove type opening structure and the first groove type opening structure two special groove type opening structures of diagonal line distribution on the section bar body, and then can assemble different accessories and board materials when installing to satisfy different installation demand, and the door frame section bar of the utility model can be used as outside flat outside open door, inside flat inside open door, outside flat inside open door, inside flat outside open door, can also be used as invisible door and double -deck swing door with screen door, and the applicability is strong, and the manufacturer only needs to manufacture a door frame section bar, greatly reduces manufacturing cost and inventory pressure.

The invention relates to a synthetic method of substituted 2-nitrobiphenyl, and belongs to the technical field of organic synthesis.The method comprises the steps that under nitrogen protection, magnesium chips and substituted bromobenzene serve as raw materials to prepare a Grignard reagent; then, in the presence of a catalyst, carrying out coupling reaction on the Grignard reagent and o-nitrobenzene sulfonate; after the reaction is finished, post-treatment is performed to obtain substituted 2-nitrobiphenyl, and the substituted bromobenzene is parachlorobromobenzene or 3, 4, 5-trifluorobromobenzene. According to the method, substituted bromobenzene and o-nitrobenzene sulfonate are directly used as raw materials, the problems of multi-step operation and low yield of phenylboronic acid preparation in a traditional route are solved, meanwhile, precious metal is replaced with the cheap copper catalyst, the raw material cost and environmental protection pressure are remarkably reduced, and the method is short in reaction route, easy to operate, high in yield and suitable for industrial production. The method is suitable for industrial large-scale production.

The utility model discloses a trolley support suitable for variable cross section tunnel relates to trolley support technical field, including portal main part, telescopic spare is set up on portal main part, and it includes: the outer tube is axially horizontal and is arranged at the top of portal main part, and both ends are connected with outside, the threaded rod is coaxial and is arranged in the outer tube, and the annular gap is left between the outer wall of threaded rod and the inner wall of outer tube, the threaded cylinder is nested in the annular gap, and its inner wall is in threaded engagement with threaded rod. The utility model with the axial movement of threaded cylinder relative to outer tube in telescopic spare, can accurate regulation trolley support node's geometric size. Since the outer tube and threaded cylinder initial state both ends are flush, and the length is same, through rotating knob, can make telescopic output end's length of protruding according to actual demand change, thereby let same trolley support can match different size's tunnel section, need not for each kind of section alone custom-made trolley support, has greatly promoted the versatility of equipment.

The invention discloses a taper sleeve type impeller mounting shaft disc, an impeller and a fan comprising the same, and relates to the technical field of ventilation equipment. The shaft disc main body is provided with a central through hole and a mounting part for mounting an impeller; the taper sleeve is sleeved in a central through hole of the shaft disc main body, and an inner hole of the taper sleeve is a through hole for a fan shaft or a motor shaft to penetrate through; the outer wall of the taper sleeve is in taper fit with the inner wall of the central through hole of the shaft disc main body; at least one group of matching holes are correspondingly formed in the shaft disc main body and the taper sleeve, each group of matching holes comprises two half holes which are respectively formed in the shaft disc main body and the taper sleeve, and when the shaft disc main body is aligned with the taper sleeve, the two half holes are aligned to form a complete mounting hole or dismounting hole. The shaft disc is divided into the shaft disc main body and the taper sleeve, so that the shaft disc main body can realize standardized batch production, the shaft disc can adapt to various shaft diameters only by replacing taper sleeves with different inner diameters, the universality of parts is greatly improved, and the production cost and the inventory pressure are reduced.

The invention relates to the field of biology, and discloses a method for improving the purity of 6-SL, which comprises the following steps: inactivating fermentation liquor, performing microfiltration to remove thalli, performing enzymolysis and color removal by using lactase, and simultaneously adding divalent metal salt to precipitate impurities and active carbon to remove pigments; separating impurities and concentrating a target product by adopting ultrafiltration and nanofiltration in sequence; further purifying through electrodialysis desalination and ion exchange; and finally, carrying out evaporation concentration, secondary decoloration and spray drying to obtain a high-purity and high-whiteness 6-SL finished product. Through key steps of optimizing electrodialysis pH, ion exchange resin types, regeneration frequency, powdered carbon decoloration conditions and the like, impurities and pigments are effectively removed, the purity (greater than or equal to 80%) and whiteness of the product are improved, meanwhile, the loss rate is remarkably reduced, and the average recovery rate of the product reaches 80% or above. The method is simple and efficient in process flow, has the characteristics of low energy consumption and low pollution, and is suitable for large-scale industrial production of 6-SL.