5048results about How to "Reduce accumulation" patented technology

The invention relates to the technical field of building information management, in particular to a BIM (Building Information Modeling)-based prefabricated part design quality management method, which comprises the following steps of S1, establishing a prefabricated part three-dimensional information model with multi-dimensional parameters by using BIM software; S2, collecting real-time production data by using a sensor in a prefabricated part production process; s3, comparing the production data with initial design parameters in the BIM model to identify deviations exceeding a set tolerance range; s4, feeding back the identified deviation information to a production link, and adjusting operation parameters of production equipment according to the deviation condition; s5, after production is completed, whether the indexes meet the requirements or not is determined; and S6, adjusting the design and process standard of subsequent production. According to the invention, through real-time data acquisition, deviation analysis and feedback, optimization suggestion generation and closed-loop management, continuous improvement of precision and quality of a prefabricated part production process is ensured, and effective combination of design and production is realized.

The invention discloses a jet aerator with low energy consumption and high oxygenation efficiency. The jet aerator comprises a Venturi tube and a quick-pass rhombic tube which are of a split structure, multi-rod supports are installed on the inner wall faces of round pipes at the two ends of the venturi pipe and support tail hook bionic stirring blades, a double-end reverse screw is arranged in the venturi pipe, one end of a quick-pass rhombic pipe is connected with the venturi pipe, the other end of the quick-pass rhombic pipe extends into an air suction chamber, and the upper portion of the air suction chamber is connected with an air supply pipe. The end, away from the Venturi tube, of the air suction chamber is connected with a mixing cavity tube, the mixing cavity tube is connected with the front end of a throat tube, a divergent wing-like blade set and a special-shaped taper hole plate are arranged in the mixing cavity tube, and a grid tray scattering nozzle is arranged in the throat tube; compared with a circular pipeline, the quick-passing rhombic pipe can provide higher water conveying capacity; the gradual change spiral body design on the double-end reverse screw can generate vortexes and turbulent flows, the turbulent flow intensity of water flow is improved, the mixing and diffusion capacity of the water flow is improved, and therefore the oxygenation efficiency is improved.

The invention discloses a sulfur-manganese composite autotrophic denitrification filler as well as a preparation method and application thereof, and belongs to the technical field of environmental functional materials and polluted water treatment. The sulfur-manganese composite autotrophic denitrification filler contains manganese salt, a sulfur-based component and a cement-based component, the manganese salt comprises one or more of manganese carbonate, calcium manganese ore and rhodochrosite; the sulfur-based component comprises sulfur and sulfur manganese ore; the cement-based component comprises cement, fly ash pottery sand, silica fume, blast furnace slag and metakaolin; the cement comprises one or more of Portland cement, iron aluminate cement and sulphoaluminate cement. The nitrogen removal efficiency of the sulfur-manganese composite autotrophic denitrification filler is superior to that of a sulfur autotrophic denitrification system, the sulfate concentration and nitrite nitrogen accumulation in effluent are remarkably reduced, the service life of the filler is prolonged, and the efficient utilization rate of the material is improved.

The invention belongs to the technical field of polyurethane, and particularly relates to a low-reaction-heat mine reinforcing material and a preparation method thereof. Comprising a component A and a component B, the component A comprises polyether polyol A, polyether polyol B, a flame retardant and a catalyst; the polyether polyol A takes a bisphenol compound and sorbitol as a mixed initiator; the polyether polyol B takes cane sugar and sorbitol as a mixed initiator; the component B comprises a prepolymer, a flame retardant and a viscosity reducer; the prepolymer is prepared by prepolymerizing polymerized MDI (Diphenyl Diisocyanate) and polyether polyol C; and the polyether polyol C takes tetrabromobisphenol A and dihydric alcohol as a mixed initiator. The bisphenol compound polyether polyol A and the high-functionality polyether polyol B which are used as specific initiators are mixed, so that the reaction heat is reduced, and the strength of the reinforcing material is improved; meanwhile, polyether polyol C starting from tetrabromobisphenol A is used, so that the flame retardance, the toughness and the strength of the prepolymer are enhanced; the prepared reinforcing material is high in compressive strength and low in reaction heat.

The invention provides an ardealite road base material and a preparation method thereof, and belongs to the field of road base materials. The road base material is prepared from the following raw materials in parts by weight: 850 to 900 parts of phosphogypsum, 5 to 15 parts of quick lime, 40 to 60 parts of cement, 55 to 85 parts of composite curing agent and 8.5 to 13 parts of curing exciting agent. The phosphogypsum is modified, so that soluble phosphorus and soluble fluorine in the phosphogypsum are cured; the curing exciting agent is atomized and added into the mixture of the modified phosphogypsum, the cement and the composite curing agent, so that all the components are in full contact, the hydration effect is promoted, and the strength and stability of the base material are improved. The pavement base material provided by the invention consumes a large amount of phosphogypsum, can effectively relieve the problem of accumulation of a large amount of phosphogypsum, reduces environmental pollution, has good mechanical properties, water stability and durability, is applied to highway construction, and has important environmental protection significance and social benefits.

The invention relates to the field of functional master batch materials, in particular to a phase-change energy temperature-adjusting fiber master batch and a fat-burning fabric thereof. The phase-change energy temperature-regulating fiber master batch is prepared from a composite phase-change material and polyethylene glycol terephthalate slices through melt extrusion and granulation, the fat-burning fabric is prepared from the phase-change energy temperature-adjusting fiber master batch and polyethylene glycol terephthalate slices through melt spinning, network compounding and weaving processing. By introducing the microencapsulated phase-change material and the high-thermal-conductivity filler, in the melt extrusion process, the microencapsulated phase-change material and the high-thermal-conductivity filler can be uniformly dispersed in the matrix material to form stable fiber master batches, form an efficient thermal-conductivity structure and provide excellent thermal regulation performance; meanwhile, microencapsulation can improve the stability and dispersity of the phase-change material, and the fat-burning fabric is prepared through melt spinning and weaving of fiber master batches, so that the heat-conducting property of the product is improved, and the continuous fat-burning effect is achieved.

The invention relates to a weight-losing enzyme and a preparation method thereof, and belongs to the technical field of biology, and the weight-losing enzyme comprises a fruit enzyme, a vegetable enzyme, a seed enzyme and a lotus leaf extract; the fruit enzyme is obtained by performing enzymolysis on mixed fruit pulp of apples, lemons, grapefruits and haws through pectinase, performing enzymolysis through pepsase and performing co-fermentation through bifidobacterium longum and lactobacillus acidophilus; the vegetable enzyme is obtained by performing enzymolysis on mixed vegetable pulp of wax gourd pulp, celery and spinach through pectinase, performing enzymolysis through pepsin and performing fermentation through lactobacillus plantarum and bifidobacterium adolescentis; the seed enzyme is obtained by carrying out trypsin enzymolysis on mixed powder of semen raphani and phaseolus calcaratus, then carrying out nattokinase enzymolysis and then fermenting with bifidobacterium breve; the lotus leaf extract is obtained by sequentially carrying out enzymolysis on lotus leaves through hemicellulase, snail protease and nattokinase. All the components are matched for use, so that the weight-losing food has the effects of promoting digestion, inhibiting fat absorption, regulating intestinal flora, promoting metabolism and the like, and has a good weight-losing effect.

The invention discloses a communication network power distribution cabinet convenient for heat dissipation, and relates to the technical field of power distribution cabinets, and the power distribution cabinet comprises a composite mechanism. According to the communication network power distribution cabinet convenient to dissipate heat, through the design of a composite mechanism, the box body shell is used for storing electronic components, after long-time operation, the temperature in the box body shell rises, hot gas rises, and then the hot gas flows to the processing mechanism from the circular groove, so that the heat dissipation effect is achieved, and the internal temperature of equipment is reduced; the ventilation mechanisms are arranged on the two sides of the box body shell, so that the convection effect is achieved, the cold air flowing effect is improved, the cold air is located at the low position with the high density, hot air is squeezed upwards after entering the box body shell, the discharging speed is increased, and the heat dissipation efficiency is improved. The box body shell is supported through the supporting assembly, so that the effect of reducing deformation of the box body is achieved, and internal electronic elements are protected.

The rotary cross-flow ceramic membrane filtering device comprises a shell, a main shaft unit arranged in the shell and a power unit for driving the main shaft unit to rotate, the power unit provides rotating power for the main shaft unit and drives the filtering disc to rotate, the main shaft unit is installed in the shell and executes a specific filtering task, and the shell provides necessary support and protection for the main shaft unit and the power unit and controls inflow and outflow of materials. According to the rotary cross-flow ceramic membrane filtering device provided by the invention, the ceramic membrane filtering disc is arranged, so that the filtering efficiency and the system stability are improved, the operation cost is reduced, and the rotary cross-flow ceramic membrane filtering device is suitable for being widely applied to various industrial fields needing efficient filtering solutions.

The invention relates to the technical field of lithium iron phosphate grinding, in particular to a grinding device for lithium iron phosphate production and a grinding method.The device comprises a tank body, a driving assembly and a first grinding assembly, a tank cover is installed at the top of the tank body, the driving assembly comprises a driving motor installed at the top of the tank cover, and a rotating shaft is fixedly arranged on an output shaft of the driving motor; the rotating shaft vertically extends into the tank body, the first grinding assembly is installed on the rotating shaft and comprises a first grinding seat, the first grinding seat is rotationally connected to the rotating shaft in a sleeving mode, the peripheral wall of the first grinding seat is fixedly arranged on the inner wall of the tank body, a conical groove is formed in the top face of the first grinding seat, and the rotating shaft is fixedly sleeved with a conical block; and a scraper is fixedly arranged on the peripheral wall of the conical block through a connecting block. According to the invention, the control capability on the granularity of the lithium iron phosphate material is improved, the uniform distribution of the granularity of the material is ensured, the problem of excessive grinding or insufficient grinding is avoided, the risk of material caking caused by the grinding wheel in the grinding process is reduced, and the grinding efficiency is improved.

The invention discloses a preparation method of a reverse osmosis membrane and the reverse osmosis membrane. The preparation method comprises the following steps: (1) adding polyethersulfone into N, N-dimethylacetamide in a heating and stirring state, and stirring for a period of time after charging is completed, so as to obtain a mixed solution; (2) cooling the mixed solution, continuing to add a pore-foaming agent, and stirring for a period of time after charging is completed to obtain a precursor solution; (3) performing vacuum defoaming treatment on the precursor solution to obtain a membrane casting solution; (4) loading the membrane casting solution on a carrier, and then carrying out gel bath treatment to obtain a base membrane; and (5) performing polyamide treatment on the surface of the base membrane to obtain the reverse osmosis membrane. The preparation method disclosed by the invention is simple in process and low in material cost, and the obtained reverse osmosis membrane has more uniform and more through-type pore structures, higher separation efficiency, more excellent chemical stability and better mechanical properties, can adapt to higher operation pressure, and can continuously and stably operate at higher flux under high pressure.

The invention discloses an all-source navigation method based on RTK and laser inertial navigation odometer fusion, and relates to the technical field of all-source navigation, and the method comprises the following steps: S1, carrying out data acquisition through a sensor, including RTK data, laser radar data and IMU data acquisition, establishing a sensor measurement model to process the acquired data, and the like. According to the method, a laser speedometer factor and an IMU pre-integration factor are constructed by using measurement data of a laser radar and an IMU, motion distortion of the laser point cloud is eliminated by using motion estimated by the IMU, the motion distortion is used as an initial value for matching the laser point cloud, and the initial value of the laser point cloud is calculated in a sliding window with a fixed number of key frames. According to the method, the IMU pre-integration factor and the laser odometer factor are jointly optimized by using the factor graph, so that the low-drift laser odometer is obtained, the IMU deviation is updated after the factor graph optimization is completed, the tight coupling of the laser radar and the IMU is realized, and the precision and the stability of the odometer are improved.

The invention relates to a cross-domain clock synchronization method in a time sensitive network, and belongs to the technical field of time synchronization. The method comprises the following steps: establishing a multi-domain clock synchronization network topology based on a transit clock; the transit clock obtains main clock time according to the main domain synchronization message, carries out link delay measurement message interaction with adjacent equipment, records a corresponding timestamp and obtains link delay; transmitting the acquired main clock time, each timestamp and link delay to a synchronization error compensation prediction module in the transfer clock, calculating a clock time offset result by the synchronization error compensation prediction module, and predicting error compensation; frequency and phase adjustment is carried out on a local clock according to the calculated error compensation predicted value, a slave domain synchronization message is sent to adjacent slave clock equipment, and forwarding of the slave domain synchronization message and clock correction are carried out in sequence. According to the invention, accumulated errors such as jitter, time delay change and network congestion can be eliminated as much as possible.

The invention relates to the technical field of sewage treatment, in particular to environment-friendly sewage treatment equipment which comprises a sewage treatment tank, the sewage treatment tank comprises a water inlet tank, an adjusting tank, an anaerobic tank, an aerobic tank, a sludge sedimentation tank and a clear water disinfection tank, a grid is inserted into the water inlet tank, a cleaning assembly is arranged on one side of the grid, and a water outlet is formed in the other side of the grid. A cleaning assembly is arranged on one side of the grid, a conveying belt is arranged on the cleaning assembly, two rotating wheels are in frictional contact with the inner wall of the conveying belt, a backwashing assembly is arranged on the other side of the grid, a backwashing block is arranged on the backwashing assembly, and a water pump is mounted on the rear wall of the sewage treatment tank through a mounting seat. According to the invention, the filter screen is arranged, so that residual dirt blocked by the grating can be conveniently cleaned, the influence of the dirt on the filtering effect of the grating is reduced, the backwashing cleaning of the grating is realized, the problems of reduced filtering efficiency and blockage caused by dirt accumulation are avoided through the backwashing assembly, the cleaning efficiency and accuracy are improved, and the practicability is high. And the problems of equipment damage and incomplete cleaning during cleaning are reduced.

The invention provides a multi-dimensional fuel gas alarm system for a workshop production line, and relates to the technical field of fuel gas alarm. The multi-dimensional fuel gas alarm system for the workshop production line comprises a fuel gas sensor module, a positioning module, a valve cut-off module, a data acquisition module, a data processing module, an alarm module and a standby power supply module, the gas sensor module comprises a gas sensor installation unit, a sensor node unit, a wireless communication module and a threshold setting unit. According to different levels of gas concentrations, alarms (early warning, alarm and emergency alarm) of different levels are triggered, and corresponding countermeasures are taken, so that when a gas leakage event occurs, gas supply can be quickly cut off, gas accumulation and potential safety hazards are reduced, and after an alarm signal is sent out, a related person in charge is immediately notified, so that the safety of gas leakage is ensured. And timely response is ensured through various modes of short messages, calls and WeChat, so that potential risks and loss are reduced to the greatest extent.

The invention relates to the technical field of cable connection, and discloses a large cable auxiliary docking device for power construction, which comprises a cutting mechanism, the cutting mechanism further comprises a base, the inner wall of the base is fixedly connected with two support rings, the inner walls of the two support rings are rotatably connected with gear rings, and the gear rings are fixedly connected with the base. A worker moves the cables until the two cables are attached to each other, a motor is started to drive a gear rod to rotate, a gear ring is made to rotate, an electric telescopic rod is driven to rotate, the electric telescopic rod is started to stretch out, a connecting block is driven to descend, a saw blade descends to make contact with the cables and cut insulating layers of the cables, and when the connecting block descends, a pressing wheel descends; when the cable insulation layer is cut, the cable insulation layer enters a cutting opening cut by the saw blade, insulation layers on the two sides of the cutting opening are expanded, the saw blade is prevented from being extruded, extra support is provided for the saw blade, redundant insulation materials in the cutting opening can be removed, the cable insulation layer can be rapidly cut, the cutting opening can be kept flat, and butt joint between cables is facilitated.

The invention provides a river sewage and sludge separation treatment device, and belongs to the technical field of sewage separation, the river sewage and sludge separation treatment device comprises a reservoir, a drainage pool and a purification pool, the purification pool is internally provided with a filter assembly, the filter assembly comprises a filter cartridge, the river sewage and sludge separation treatment device further comprises a sewage discharge assembly, and the sewage discharge assembly discharges sludge on the inner wall of the filter cartridge through flushing of water flow; the storage assembly is used for cleaning a biological membrane on the inner wall of the filter cartridge by utilizing stored bleaching powder and cooperating with flushing liquid; the cleaning assembly is used for cleaning the filter cartridge by spraying water; the beating assembly is used for cleaning sludge on the inner wall of the filter cartridge by utilizing vibration generated by beating; and the floating assembly controls discharge of bleaching powder according to the height of the water level. The device has the beneficial effects that the filter cartridge rotates to drive the slapping plate to strike the filter cartridge, and meanwhile, the filter cartridge is flushed by water flow, so that sludge adhesion is effectively reduced, the cleaning effect is improved, in addition, microorganisms can be automatically eliminated, and the water quality is guaranteed.

The invention relates to the technical field of biological medicine, and provides a targeting exosome capable of delivering nucleic acid drugs and a preparation method of the targeting exosome. The exosome comprises a fusion polypeptide, the fusion polypeptide comprises a targeting protein molecule, an exosome transmembrane protein and a nucleic acid binding domain, and the exosome can load a nucleic acid molecule through binding of the nucleic acid binding domain. According to the invention, engineering modification is carried out on the exosome, so that nucleic acid molecules can be efficiently loaded into the exosome, and meanwhile, the exosome is endowed with the capability of targeting to specific target cells, tissues and organs.

The invention relates to the technical field of metal material manufacturing, and particularly discloses a preparation method of an ultrahigh-strength C250 super-large-specification vacuum consumable steel ingot. The preparation method comprises the steps of vacuum induction smelting and vacuum consumable remelting. And in the vacuum induction furnace alloying process, chemical components are accurately controlled, specifically, the chemical components comprise 0.006 + / -0.001 wt% of C, 18.0 + / -0.20 wt% of Ni, 8.0 + / -0.05 wt% of Co, 5.0 + / -0.10 wt% of Mo, 0.40 + / -0.01 wt% of Ti and 0.10 + / -0.02 wt% of Al. The problems of chemical component point control, chemical component uniformity control and the like of a C250 ultra-large-specification vacuum induction phi710mm electrode and a phi810mm vacuum consumable steel ingot are solved, and the metallurgical quality of the ultra-large-specification vacuum consumable steel ingot completely reaches the physical level of a small-specification steel bar.

The invention belongs to the field of daily chemicals, and discloses a strain of bifidobacterium adolescentis, the classification name of the bifidobacterium adolescentis BF23BA001 is bifidobacterium adolescentis, the preservation number is CGMCC NO.26999, and the strain of bifidobacterium adolescentis BF23BA001 is named as bifidobacterium adolescentis BF23BA001. The preservation date is March 31, 2023, and the preservation unit is China General Microbiological Culture Collection Center (CGMCC); the preservation address is No.3, Yard 1, Beichen West Road, Chaoyang District, Beijing. Compared with other commercially available similar bacteria, the strain has unique advantages in the production of small molecule peptides and gamma-aminobutyric acid, has a remarkable anti-wrinkle advantage according to the functional characteristics of the small molecule peptides and gamma-aminobutyric acid, and has a remarkable anti-wrinkle effect through subsequent functional verification. The method is of great significance to further improvement of whitening, brightening, repairing and anti-aging effects of yeast fermentation products. In addition, the invention further discloses a composition for inhibiting generation and accumulation of lipofuscin, application based on the composition and cosmetics.

The invention relates to the field of transmission shafts, in particular to a transmission shaft support assembly, a transmission shaft assembly and a vehicle. The transmission shaft support assembly comprises a supporting unit and a cushioning unit. The supporting unit comprises a supporting base, a blocking plate and a reinforcing drainage plate. The supporting seat is arc-shaped, and the inner circumferential surface of the supporting seat is an arc-shaped avoiding surface. The blocking plate protrudes out of the arc-shaped receding face. The reinforcing drainage plate is in a concave shape relative to the arc-shaped receding face. And a plurality of through holes are formed in the arc-shaped avoiding surface. The cushioning unit comprises an elastic bushing and a rigid hoop. The rigid hoop is arranged on the outer side of the elastic lining in a sleeving mode. And the rigid hoop is detachably connected with the supporting seat. And a buffer space is formed between the rigid hoop and the arc-shaped avoiding surface. The transmission shaft assembly comprises a transmission shaft support assembly. A vehicle includes a driveshaft assembly. The problem that too much silt is accumulated on the transmission shaft support assembly can be solved.

The invention belongs to the technical field of microorganisms, and particularly relates to a manganese-resistant manganese oxide strain Klebsiella oxytoca YJ and application of the manganese-resistant manganese oxide strain Klebsiella oxytoca YJ. The invention discloses a manganese-resistant manganese oxide strain YJ, the taxonomic name of the manganese-resistant manganese oxide strain YJ is Klebsiella oxytoca, the manganese-resistant manganese oxide strain YJ is preserved in Guangdong Microbial Culture Collection Center on May 21, 2024, and the preservation number is GDMCC No: 64667. According to the invention, manganese-resistant strains are screened to obtain a strain YJ of which the tolerance concentration to manganese is 200mM, and the strain YJ is Klebsiella oxytoca through morphological and molecular biological identification, and the strain YJ is Klebsiella oxytoca. Research on the removal rate of heavy metals shows that the removal rate of Mn (II) in a 500mg / kg culture solution reaches 92.20% at the 4th day, the removal rate of As (III) in a 50mg / kg culture solution reaches 98.40% at the 4th day, and the removal rate of Cd (II) in a 5mg / kg culture solution reaches 57.07% at the 5th day. Therefore, the strain YJ has very important significance on pollution treatment of heavy metals such as Mn, As and Cd.

The invention discloses a high-strength cold-resistant fiber and a preparation method thereof, and relates to the field of fibers. When the high-strength cold-resistant fiber is prepared, diphenylphosphine sequentially reacts with triallylmethoxysilane and nickel bromide, and a silicon-phosphorus-nickel complex is prepared; the preparation method comprises the following steps: reacting an alkene mixed solution, azodiisobutyronitrile, a hydrochloric acid solution and a silicon mixed solution, diluting with 4-methyl cyclohexanone, and reacting with zinc bromide to prepare a pre-modified polyacrylate emulsion; the preparation method comprises the following steps: carrying out a batch reaction on graphene oxide and 1-aminopyrrole to prepare modified graphene oxide; the modified graphene oxide, 2, 5-dihydroxy terephthalaldehyde and the pre-modified polyacrylate emulsion react and then electrostatic spinning is conducted, and the high-strength cold-resistant fiber is prepared. The high-strength cold-resistant fiber prepared by the invention has antibacterial, anti-aging, flame-retardant and antistatic capabilities.

The invention discloses a laser-strengthened wear-resistant powder metallurgy valve seat, which relates to the technical field of powder metallurgy, and comprises a middle concave platform, a collecting hopper is arranged at the top of the middle concave platform, a mold charging barrel is arranged in the collecting hopper, and a plurality of round rods are fixedly connected between the inner wall of the collecting hopper and the outer wall of the mold charging barrel; and a detachable collecting frame is arranged at the bottom of the collecting hopper. Through the arranged die pressing mechanism and the pressing vibration mechanism, when the detachable upper die presses raw material powder in the die charging barrel, the die charging barrel can be synchronously driven to vibrate, so that the raw material powder in the die charging barrel is dispersed, and the uniformity and sufficiency of pressing are guaranteed; and meanwhile, under the vibration effect, overflowing raw materials can conveniently and rapidly fall into the collecting hopper from the edge of the top end of the mold charging barrel, and collection of overflowing raw material powder is accelerated.

The invention discloses a compound microbial agent for nitrogen fixation, carbon sequestration, synergism and stress resistance and application, and belongs to the technical field of functional microbial preparations, the compound microbial agent provided by the invention is prepared by taking combined nitrogen-fixing bacteria and high-yield urease inhibitor bacteria as cores and compounding salt-resistant, biocontrol, growth-promoting and carbon sequestration bacteria. The compound microbial agent provided by the invention can efficiently wake up nitrogen-fixing flora of a root system, accelerate nitrogen conversion in the atmosphere and play a role in nitrogen fixation and synergism on one hand, and can increase the content of organic carbon in soil and improve the fertility of the soil on the other hand, so that the quality of agricultural products is improved, and the purposes of increasing yield and income are achieved. In addition, the compound microbial agent also has stress resistance and disease prevention functions, and can relieve abiotic stress caused by a saline-alkali soil environment, prevent plant diseases caused by bacteria or fungi, improve the survival rate of crop cutting seedlings and enhance the continuous cropping resistance of crops.

The invention relates to the technical field of copper wire drawing machines, in particular to a copper wire drawing machine with a cooling device, which comprises a machine body, a wire drawing die, a connecting frame, an upper die and a lower die, cooling grooves are formed in the bottom surface of the upper die and the top surface of the lower die, the two cooling grooves are matched to form a cooling cavity, the end, close to the wire drawing die, of the cooling cavity is in a circular truncated cone shape, the small-diameter face of the cooling cavity faces the wire drawing die, a feeding channel is formed in the upper die, and discharging grooves are formed in the sides, close to the wire drawing die, of the upper die and the lower die. The two discharging grooves are matched to form an annular discharging cavity, the side wall of the discharging cavity is matched with the side wall of a die hole of the wire drawing die, and a discharging channel is formed in the lower die. The device can improve the distribution uniformity of cooling lubricating liquid on the copper wire, improve the drawing effect of the copper wire and the quality of a finished product, and prolong the service life of the device.

The invention provides a ceramic rigid-flex circuit substrate and a preparation method thereof, and the method comprises the specific steps: S1, cleaning a ceramic substrate, and arranging a brazing metal transition layer on the surface of the ceramic substrate; s2, low-melting-point brazing filler metal is sprayed to the surface of the brazing metal transition layer of the ceramic substrate, and a multi-layer flexible circuit board is attached to the surface, sprayed with the low-melting-point brazing filler metal, of the aluminum nitride ceramic substrate to obtain an attached plate; and S3, placing the laminated board in a vacuum or protective atmosphere for welding to obtain the ceramic rigid-flex circuit substrate. The ceramic substrate is adopted, the brazing metal transition layer is introduced to the surface of the ceramic substrate, the welding process of the flexible circuit board and the ceramic substrate is optimized, the problems that heat conduction is difficult, interface thermal resistance is large and uneven or bonding strength is insufficient are effectively solved, and the overall performance and quality of a product are improved.

The invention provides a highway pavement asphalt waste recycling device which comprises a table body, a screening box is arranged at the top of the table body, a crushing box is arranged at the top of the screening box, a feeding port is formed in the top of the crushing box in a penetrating mode, and a first crushing mechanism is arranged in the feeding port; a first smashing roller set and a second smashing roller set which are in linkage with the first smashing mechanism are rotationally arranged in the first material returning opening and the second material returning opening correspondingly. When the asphalt waste crushing device is used, asphalt waste is fed into the feeding port through the feeding machine, the driving mechanism drives the first crushing mechanism to operate, the asphalt waste is crushed, the crushed asphalt falls into the screening box, and large-particle asphalt fragments are discharged to the two sides through the screening box and fall into the inclined groove; according to the device, asphalt fragments are conveyed to the corresponding first material returning opening and the second material returning opening through the crushed material returning mechanism, secondary crushing is conducted through the first crushing roller set and the second crushing roller set, the device does not need to be stopped for waiting, continuous crushing of asphalt waste is achieved, and the crushing and recycling efficiency is improved.

The invention discloses a hematology analyzer and a bubble discharging method. The hematology analyzer comprises a flowing chamber, a pressure source, a first control valve, a second control valve and a third control valve, the flowing chamber comprises a liquid containing cavity, a first liquid inlet, a second liquid inlet and a liquid outlet, the first liquid inlet, the second liquid inlet and the liquid outlet are communicated with the liquid containing cavity, the first control valve is connected with the first liquid inlet through a pipeline, and the second control valve is connected with the liquid outlet through a pipeline. The third control valve is connected with the second liquid inlet through a pipeline, and the pressure source is connected with at least one of the first liquid inlet and the second liquid inlet through a pipeline; when the first liquid exists in the liquid containing cavity, the pressure source is matched with the first control valve, the second control valve and the third control valve to provide positive pressure and negative pressure for the liquid containing cavity, the liquid containing cavity is filled with liquid, second liquid is obtained, and bubbles in the second liquid are smaller than bubbles in the first liquid. Therefore, bubbles of the liquid in the flow chamber can be discharged through a simple structure.

The invention discloses a tea leaf fixation segmented conveying device and method, and relates to the technical field of tea leaf fixation. A uniform smearing mechanism comprises a rotating rod, a U-shaped plate, a door blocking plate, a rotating shaft, a sector plate, a telescopic rod, an L-shaped rod, a telescopic buckle, a round head column, a U-shaped rod, a push plate, a rotating column, a sliding block and a connecting rod; the U-shaped plate is fixedly installed on the circumferential face of the rotating rod, the door blocking plate is fixedly installed at the bottom of the feeding port, the side, away from the feeding port, of the upper side of the rectangular frame rotationally penetrates through the rotating shaft, and one end of the telescopic rod is fixedly installed on the circumferential face of the rotating shaft. And meanwhile, the influence on the transportation of the tea leaves due to the fact that the tea leaves are scattered and accumulated towards the two sides is avoided.