62results about How to "Address uneven distribution" patented technology

The invention relates to the technical field of lithium batteries, and discloses a lithium battery life decline quantitative prediction and health state intelligent evaluation method, which comprises the following steps: S1, multi-source data acquisition: arranging strain gauge sensors at battery electrode plates and a shell to acquire stress-strain data, integrating a gas sensor in a battery module to acquire gas data, and calculating the data of the stress-strain data; battery data and environment data are acquired by a high-precision synchronous acquisition system through nanosecond clock signals and are processed and stored, and the data quality is monitored at the same time; s2, data preprocessing: generating an extended data set through data transformation and combination and GAN-based data, and processing abnormal data by using a method based on statistics and machine learning; according to the invention, through multi-source data fusion acquisition, a stress-strain sensor and a plurality of gas sensors are added to monitor the internal mechanical change and gas component concentration of the battery, so that the problem that the accuracy and practicability of the model are greatly reduced due to a traditional method based on an electrochemical model is improved.

The invention discloses a preparation process of a high-thermal-conductivity composite substrate, and the process comprises the steps: fixing a pre-prepared skeleton on an insulating base layer, and enabling branches of the skeleton and the surface of the insulating base layer to jointly define a plurality of heat dissipation spaces; dividing the plurality of heat dissipation spaces into at least one high heat dissipation space and at least one low heat dissipation space according to the layout and heating characteristics of a predetermined electronic component; a first heat-conducting filler is injected into the high-heat-dissipation space, a second heat-conducting filler is injected into the low-heat-dissipation space, curing treatment is conducted, the heat conductivity coefficient of the first heat-conducting filler is larger than that of the second heat-conducting filler, and the first heat-conducting filler and the second heat-conducting filler are combined with the framework to form a heat-conducting layer; a functional layer of the printed circuit board is fixed on the surface of the heat conduction layer, the area, corresponding to the high-heat-dissipation space, of the functional layer is used for installing high-heat-dissipation electronic elements, and the area, corresponding to the low-heat-dissipation space, of the functional layer is used for installing low-heat-dissipation electronic elements According to the technical scheme, different heat conduction measures can be adopted for different heating elements.

The utility model discloses a passivation device for mechanical manufacturing, and relates to the field of passivation devices for mechanical parts. The sand box passivating device comprises a protecting mechanism, a passivating mechanism is arranged on the lower portion in the protecting mechanism, the passivating mechanism comprises a fixing frame, four universal wheels are arranged at the bottom of the fixing frame, and a sand box is installed on the top of the fixing frame through a plurality of spring sleeve rods. Wherein the fixing frame is combined with the universal wheels, stable supporting is provided, moving and positioning are convenient, the flexibility and convenience of the device are enhanced, the spring sleeve rod utilizes the elasticity and the buffering capacity of the spring sleeve rod, impact generated when the sand box vibrates is reduced, uniform and stable vibration of the sand box is kept, grinding materials are evenly distributed in the vibration process through the circular structure of the sand box and the arrangement of the passivation tank, and the grinding efficiency is improved. And the vibration motor effectively activates and distributes grinding materials through controllable vibration, the grinding materials make contact with the surfaces of the parts in an all-dimensional mode, and the passivation effect and uniformity are ensured.

The invention discloses preparation and application of an ionic vinyl metal covalent organic framework material, and belongs to the technical field of organic synthesis. The preparation method comprises the following steps: adding a metal cluster containing an aldehyde group and an ionic monomer containing a methyl group into a reaction tube, and reacting in an organic solvent under the catalytic action of piperidine to generate the crystalline ionic carbon-carbon bond linked metal covalent organic framework material. The sp2c-COFs are generated by utilizing a Knoevenagel condensation reaction through a bottom-to-top strategy, the stability of the material is improved through carbon-carbon bond linkage, and metal and ion sites are uniformly distributed in the framework material according to the method. In the material, metal and ions are introduced into a monomer through in-situ synthesis, so that uniform distribution of functional sites is realized, the problems of non-uniform metal distribution, difficulty in quantification and the like caused by introduction of metal through a post-modification method at present are solved, and the material has important value in performance improvement of COFs (Covalent Organic Frameworks) materials.

The invention discloses a semi-supervised image recognition method based on adaptive comparative learning. The method comprises the following steps: inputting a labeled sample and an unlabeled sample into a data enhancement module to obtain an enhanced sample; inputting the enhanced sample into a feature encoder to obtain feature embedding and feature prediction of the sample, and calculating a supervised loss function and an adaptive threshold; unsupervised data feature prediction is compared with an adaptive threshold value, a class perception module and a distance perception module are adopted for processing unlabeled samples to obtain a class perception loss function and a distance perception loss function, and meanwhile an unsupervised loss function is calculated; and adding the supervised loss, the unsupervised loss, the class perception loss and the distance perception loss to obtain a total loss function, and training a machine learning model. According to the method, the adaptive threshold is set, the unmarked samples with different confidence scores are classified, unsupervised data can be fully utilized, the problem of uneven distribution of different types of data is solved, and the accuracy of image recognition is effectively improved.

The invention provides a water-based heat-insulating and cooling coating and a preparation method thereof. The water-based heat-insulating and cooling coating is prepared from the following components in parts by weight: 5 to 25 parts of carboxymethyl cellulose aerogel powder, 20 to 50 parts of waterborne polyurethane emulsion, 10 to 50 parts of deionized water, 0.5 to 2.5 parts of wetting penetrant, 0.5 to 5 parts of emulsifier, 10 to 45 parts of nano SiO2, 0.5 to 4 parts of defoaming agent and 0.5 to 4 parts of bactericide. The preparation method comprises the following steps: firstly preparing carboxymethyl cellulose aerogel powder, then reacting the carboxymethyl cellulose aerogel powder with waterborne polyurethane emulsion under the action of a wetting penetrant and an emulsifier, and then adding nano silicon dioxide for blending to form the coating with heat-insulating and cooling effects. The coating disclosed by the invention combines the advantages of adhesion performance of polyurethane and heat insulation performance of carboxymethyl cellulose aerogel, the adhesion of the coating can reach 1.5 Mpa, and the heat conductivity coefficient is as low as 0.036 W / (mk); the heat-insulating and cooling coating is good in water-based property, safe and environmentally friendly, the preparation process is simple, and continuous production can be achieved.

The utility model relates to the technical field of heating equipment, and provides a heating device. The heating device comprises a box body, an air blowing component and a heat exchange assembly. Wherein a cavity is formed in the box body, an air outlet is formed in one end of the box body, an air inlet is formed in the other end of the box body, and the air outlet and the air inlet are both communicated with the cavity; the air blowing component is arranged in the cavity and used for forming air flow in the cavity, and the air flow flows from the air inlet to the air outlet; the heat exchange assembly is arranged in the box body and used for conveying heat in the warm air into the cavity. A first cover body is arranged at the air outlet and is used for blocking the air outlet; the air inlet is provided with a second cover body which is used for blocking the air inlet. According to the utility model, the defect that the heating equipment for directionally controlling the warm air in the prior art cannot utilize heat in the warm air is overcome, and the heating equipment which can utilize the heat in the warm air and can directionally and centrally control the flow direction of the warm air is realized.

The application discloses a kind of battery core temperature online estimation and prediction method, system, equipment and storage medium based on mixed TSDM-AMBO-GRU, applied to lithium ion battery core temperature estimation and prediction field, comprising: obtaining battery operating data, and utilizing TSDM to create synthesis of battery operating data, as training set with battery operating data together;Training set is input to BO-GRU-AM framework, and the battery core temperature prediction model based on BO-GRU-AM is obtained by training;Input test set to battery core temperature prediction model, and obtain battery core temperature prediction result.The application not only can effectively overcome the problem caused by uneven distribution of temperature sensors and limited data in lithium ion battery system, and can realize real-time, efficient and accurate battery core temperature prediction under various temperatures and complex conditions, provide reliable fault warning and real-time monitoring support for BMS in practical application.

The utility model discloses a double -row blade air intake distributor relates to spray tower waste gas treatment technical field. It includes spray tower, and the bottom of spray tower is equipped with waste gas entrance, and the inside fixed and waste gas entrance corresponding distributor. The distributor contains two rows of symmetrical blades, and the bottom plate and the cover plate fixed in the inside of spray tower, and the blade is fixed between two. The bottom plate, the cover plate are the same fan -shaped structure of shape size, and two ends are the arc shape of adapting with tower inner wall. The blade is "L" character shape and corner arc transition, and there is the shunt in the longitudinal adjacent blade, and the horizontal adjacent blade interval is gradually small. The distributor can even shunt waste gas, promote the utilization rate of filler, reduce local wind pressure, reduce resistance, improve waste gas purification effect.

The invention relates to a preparation method of a composite cementing system containing solid waste, and belongs to the technical field of cementing materials. The method comprises the following steps: respectively grinding all cementing materials after dehydrating; mixing all the cementing materials with water accounting for 60-70% of the total water amount, and stirring at a low speed for 60-90 seconds; adding the rest water, and stirring at a medium speed for 90-120s; and adding an alkaline activator, and stirring at a high speed for 60-90s to obtain a composite gel system containing solid waste. After dehydration and grinding, a part of water is firstly added to wet powder, then all water is added to realize uniform dispersion of the powder, and finally an alkaline activator is added to realize excitation of potential active materials in solid waste, so that the chemical activator is prevented from being wrapped or locally enriched by dry materials which are not fully dispersed, and the problem of non-uniform distribution is solved.

This utility model discloses a batching and mixing equipment for lithium slag building material production, including a mixer body. A spraying mechanism is installed at the upper end of the mixer body, and a discharge mechanism is installed on the side end of the mixer body. The mixer body includes a mixing tank, a stirring shaft, and a first motor. The first motor is fixedly installed at the bottom of the mixing tank, and a rotating shaft is installed on the output shaft of the first motor. The stirring shaft is fixedly installed on the rotating shaft. A support plate is installed on the upper end of the mixing tank. The spraying mechanism includes a chemical tank, a chemical supply pipe, a turntable, an angle adjusting rod, a submersible pump, and atomizing nozzles. The chemical tank is fixedly installed on the lower end of the mixing tank, and the bottom of the chemical supply pipe is connected to the outlet of the submersible pump. This utility model has the advantages of uniform spraying, wide coverage, and efficient and convenient discharge, solving the problems of uneven distribution of liquid additives and low discharge efficiency in traditional equipment.

The utility model provides an automatic ore granularity on -line detection and grading equipment. Including casing, support subassembly, push plate subassembly and industry camera, support subassembly includes upper support board, and upper support board is set in the casing, and push plate subassembly includes push plate and floating rod, and push plate is installed on the floating rod, and the floating rod is installed on the support subassembly through the floating assembly, and the interval between the lower edge of push plate and the upper end surface of upper support board changes in gradient, and the inner top of casing is equipped with industry camera. The floating rod drives the push plate to rotate, and the interval between the lower edge of push plate and the upper end surface of upper support board changes in gradient in the process of rotation, and the gathered ore is scattered, and the uniform dispersion of particles is ensured, and the uneven distribution of particles is solved. Secondly, the industrial camera directly shoots the dispersed particles, captures the distribution state of coarse and fine particles, avoids the problem that fine particles are covered or coarse particles are distorted, makes the granularity data closer to the true value, and improves the detection accuracy and reliability.

The invention discloses a system and a method for regulating and controlling the humidity of a cathode of an anode independent liquid supply AEM electrolytic bath. The system and the method are used for solving the problem of drying of a cathode film surface under high current density. The system comprises an electrolytic bath main body, a gas-liquid separation module and a humidification module. And an interface humidity adjusting layer is arranged in a cathode membrane electrode assembly of the electrolytic bath main body. Wet hydrogen produced by the cathode enters the gas-liquid separation module through the outlet to separate liquid water, and the liquid water is conveyed to the humidification module at the inlet end of the cathode and is converted into water vapor or fog drops to be mixed with hydrogen produced by the cathode to form humidified hydrogen backflow. Moisture in the humidified hydrogen is adsorbed by the interface humidifying layer and is uniformly diffused to a cathode film-electrode interface in the in-plane direction of the interface humidifying layer so as to maintain interface wetting. According to the method, independent moisture closed-loop circulation on the cathode side is constructed, so that self-regulation of the humidity of the cathode under the condition that external liquid supply is not needed is realized, the problems of moisture loss and non-uniform distribution caused by electroosmosis dragging are solved, and the operation stability and durability of the AEM electrolytic cell under high current density are remarkably improved.

The invention discloses an ammonia-methanol coupling gas production device and a use method thereof, and belongs to the technical field of controllable atmosphere preparation, the ammonia-methanol coupling gas production device comprises a central combustion zone, a peripheral cracking zone and a tail mixing purification zone which are coaxially nested; the central combustion area comprises a hearth wall, and the hearth wall is of a honeycomb-shaped porous heat exchange structure; the peripheral cracking area is arranged on the outer side of the central combustion area, a catalyst bed layer of a spiral flow guide structure is arranged in the peripheral cracking area, and a high-temperature-resistant heat-conducting filling layer is arranged between the catalyst bed layer and the hearth wall of the central combustion area; the tail mixing and purifying area is connected to the downstream of the central combustion area and the peripheral cracking area and used for mixing and purifying combustion products from the central combustion area and cracking gas from the peripheral cracking area. By optimizing a heat exchange interface and a catalyst bed layer structure, the heat transfer uniformity and the response speed are enhanced, so that stable temperature control and preparation of high-purity mixed gas are realized.

The invention discloses a preparation method and application of a carbon-based anode material, and relates to the field of electrolytic hydrogen production. The method comprises the following steps: 1, preparing a carbon powder material; 2, activating the carbon material at high temperature; 3, cleaning and sieving; 4, preparing turbid liquid; and 5, uniformly dispensing the turbid liquid on hydrophilic carbon cloth in batches, and drying to obtain the carbon-based anode material. The utilization rate of the pulverized coal is increased, the solution resistance is reduced, the carbon powder is uniformly fixed on the surface of the anode, and the problem of particle sedimentation is avoided; the specific surface area of the anode is increased; the interface catalytic performance is improved; and the bonding strength between the carbon powder and the electrode material is improved, so that the influence of solution resistance in the electrolysis process is reduced. The method is combined with an iron-based circulation (Fe < 2 + > / Fe < 3 + >) system, the anodic oxidation potential is remarkably reduced, the oxidation kinetics is improved, and the efficiency of hydrogen production through water electrolysis is improved; through iron-based circulation assistance and improved anode design, the energy consumption of electrolyzed water is reduced, and the catalyst shows excellent catalytic activity in an acidic system.

The cooking device comprises a first containing cavity, a second containing cavity, a flow equalizing plate and a flow deflector, the first containing cavity is provided with an air inlet suitable for receiving airflow through the air inlet, the second containing cavity is suitable for containing food materials, and the flow equalizing plate separates the first containing cavity and the second containing cavity and is provided with a plurality of air holes. The flow deflectors are arranged in the first containing cavity and extend from the air inlet in the direction away from the air inlet so as to divide the first containing cavity into a plurality of air cavities, and the air holes communicate with the air cavities and the second containing cavity. According to the technical scheme, the flow deflectors are arranged in the first containing cavity to form the multiple air cavities, the flow deflectors can guide the airflow to the air cavities, rapid distribution of the airflow in the first containing cavity is facilitated, the airflow is more uniform when flowing to the second containing cavity through the air holes, the problem of uneven airflow distribution is solved to a certain extent, and the service life of the air conditioner is prolonged. More friendly heat exchange on the food materials is realized, and the cooking effect on the food materials is improved.

The present disclosure relates to the technical field of extruders, and one embodiment of the present disclosure provides a cable extruder facilitating temperature control, which comprises an extruder body, a feeding box and a circulating water tank, the feeding box is arranged at the top of the extruder body, the circulating water tank is arranged at the bottom of the extruder body, a circulating cooling assembly is arranged on the circulating water tank and the extruder body, a top frame is fixed at the top of the feeding box, a feeding preheating assembly is arranged on the top frame, and the circulating cooling assembly comprises a pair of outer covers, a convex layer is attached to the two end faces of the outer cover, and a water inlet cover is arranged on the outer cover at the top. Through the above technical solution, the technical problem that the violent friction between the screw and the barrel and the material shearing will generate a large amount of heat, resulting in a sharp rise in the temperature in the barrel and uneven distribution, and the existing equipment lacks an effective preheating and temperature control mechanism for the pellets or powder entering the extruder, and the low-temperature material directly put into the high-temperature barrel will cause unstable melting speed due to the large temperature difference.

This invention relates to a multi-energy coupled self-driven wastewater treatment and heat recovery synergistic system. It includes a wastewater treatment component, a heat recovery component, and a thermoelectric module. The wastewater treatment component comprises a flocculation chamber, a wastewater treatment chamber, and a flocculated particle collection chamber. The sidewall of the flocculation chamber is equipped with a flexible diaphragm switch driven by fluid pressure difference, enabling adaptive and precise dosing of flocculant. The flocculated particle collection chamber is equipped with a flocculated particle capture plate triggered by particle gravity torque, achieving self-triggered solid-liquid separation. The heat recovery component suspends multiple phase change heat storage rods via elastic ropes. The front end of each phase change heat storage rod has a balance ball controlled by a positive arc temperature-sensing piezoelectric spring signal, which, together with the elastic ropes, excites the phase change heat storage rod to generate multi-degree-of-freedom oscillation, enhancing heat transfer. The phase change heat storage rods have a built-in thermoelectric module that converts the temperature difference energy and expansion mechanical energy of the phase change process into electrical energy, providing self-powered operation for the system. This achieves integrated, low-energy-consumption operation.

The utility model relates to the technical field of flue-cured tobacco equipment, in particular to a flue-cured tobacco seeding device which comprises an upper plate, a material storage box is installed on the top of the upper plate, a discharging pipe is connected to the bottom of the upper plate, a bottom plate is connected to the bottom of the discharging pipe, the upper plate and the material storage box are arranged in an inclined mode, and a bearing groove is formed in the surface of the material storage box. A plurality of temporary material storage holes are formed in the bottom of the receiving groove, the size of each material storage hole is matched with the size of one flue-cured tobacco seed, an inserting groove is formed in the bottom of the material storage box, a blocking plate is horizontally arranged in the inserting groove, a plurality of through holes are formed in the surface of the blocking plate, and the blocking plate can horizontally slide so that the through holes can be aligned to or staggered from the temporary material storage holes. In the flue-cured tobacco seeding device, the size of the material storage hole is matched with the size of one flue-cured tobacco seed, so that only one seed can be released each time, and the seeding accuracy is greatly improved. Meanwhile, due to the design of the barrier plate, the seeding rate can be accurately controlled, and the problems of seed waste and over-dense seeding are avoided.

The present invention provides a wet curtain structure and a cooling device having the same. The wet curtain structure includes a plurality of wet curtain sheets. There is a flow space for airflow between two adjacent wet curtain sheets. Each wet curtain sheet is used to arrange fluid. At least one of the plurality of wet curtain sheets is provided with a corrugated portion and a flow guide hole for guiding the fluid. The flow guide hole is a long strip through hole. The flow guide hole passes through the opposite sides of the wet curtain sheet. With the above arrangement, the wet curtain structure of this embodiment is based on the honeycomb structure of the existing traditional wet curtain. A plurality of long strip-shaped hole structures are provided at a certain distance on each corrugated sheet. The long strip holes cooperate with the corrugated portion to guide the fluid on the wet curtain sheet. The wet curtain structure of the present invention solves the problem of low evaporation rate of the wet curtain in the prior art.

The utility model relates to the technical field of oven, concretely is a hot -blast circulation oven. Including the box, the lateral wall of box is provided with the cabinet door, and the top of box is provided with the air inlet and the moisture discharge port, and the top of moisture discharge port is provided with the moisture exhaust fan, and the inner chamber of box is provided with the circulation fan opposite with air inlet, and the inside of box is provided with the drying room, and the drying room forms the first air duct, the second air duct and the third air duct with the box, and the left side board and the right side board of drying room all are provided with the air vent, and the second air duct is provided with the heating device, and the air vent is provided with the regulation air baffle that is spaced apart up and down, and the drying room is provided with the adjustment structure that adjusts the interval of two adjacent regulation air baffles, and the outer wall of box is provided with the control panel. The utility model, through setting up and down interval regulation air baffle at the air vent of drying room lateral wall, and being equipped with adjustment structure, can flexibly adjust the interval of adjacent air baffle, realizes the accurate control to the different height hot -blast distribution amount in drying room.

The utility model is applicable to the technical field of moringa oleifera leaf preservation, and provides a refrigeration device convenient for moringa oleifera leaf preservation, which comprises a base plate, and a refrigeration box is fixed at the top of the base plate and is used for preserving and refrigerating moringa oleifera leaves; the rotatable placing frame is arranged in the refrigerating box, and a plurality of net baskets capable of being pulled and detached are arranged on the placing frame and used for containing horseradish tree leaves; the refrigerating machine is fixedly mounted at the top of the refrigerating box; and the air outlet pipe is fixedly installed in the refrigerating box, and the air inlet end of the air outlet pipe is fixedly communicated with the cold air output end of the refrigerating machine. According to the cold storage device facilitating preservation of the moringa oleifera leaves, the containing frame can be driven by the driving mechanism to rotate, so that the moringa oleifera leaves at different positions have the opportunity to make contact with cold air, and the problem that cold air is difficult to penetrate through densely-stacked leaves in a traditional stacking and cold storage method is solved.

This invention discloses a PVA water-soluble adhesive tape and its preparation method, relating to the field of environmentally friendly polymer materials technology, and belonging to patent classification number C09J103 / 04. The method includes the following steps: mixing oxidized starch with deionized water, adding polyamide polyamine epichlorohydrin resin, and heating to carry out an ionic crosslinking reaction to obtain ionicly crosslinked starch; cooling the ionicly crosslinked starch, then adding carboxybetaine methacrylate and ammonium persulfate, and heating to carry out a free radical grafting reaction to obtain modified starch; adding polyvinyl alcohol aqueous solution and borax decahydrate to the modified starch to carry out a borate ester crosslinking reaction to obtain a water-soluble starch-based adhesive; preparing a PVA film substrate using a blown film process, uniformly coating the water-soluble starch-based adhesive onto the PVA film substrate using a precision coating machine, and then curling and slitting to obtain the PVA water-soluble adhesive tape. The PVA water-soluble adhesive tape prepared by this invention not only has good water solubility but also excellent adhesive properties.

The utility model discloses a kind of stirring devices for solid-state battery electrolyte production, it is related to solid-state battery electrolyte stirring processing tool technical field, including main body, the feeding port being opened in the top end of main body and the discharge port being installed in the bottom end of main body, the equidistance installation of multiple supporting rods is installed in the bottom end of main body, and transmission mechanism is installed on the upper end of main body, and discharge mechanism is installed on discharge port;The utility model is through the cooperation of first gear and the second gear of periphery, it is convenient for first gear to drive multiple second gears to rotate, and then expand stirring area, avoid raw materials uneven distribution in local area;Again through the stirring of hexagonal shape, it is convenient to make stirring more sufficient, mix more evenly, and then improve mixing effect;Finally solve the problem that the simple structure of stirring rod of existing device leads to poor stirring mixing degree and single stirring rod stirring area is small, causes raw material uneven distribution.

This utility model discloses a high-efficiency plant active ingredient extraction and processing device, relating to the field of plant extraction. The device includes a grinding chamber, a feeding rack, a grinding plate, a leveling plate, and a driving device. The grinding chamber has a cavity with a fixed plate inside, dividing the cavity into an upper grinding chamber and a lower collecting chamber. The fixed plate has multiple collecting holes. The feeding rack is located on one side of the grinding chamber and has an inclined channel communicating with the cavity. The grinding plate is located at the top of the cavity. The leveling plate is located on the lower side of the grinding chamber. The driving device is located outside the grinding chamber and drives the leveling plate to move from the lower side of the grinding chamber to the other side, leveling the fruit peel material piled on the fixed plate. This utility model aims to automate the problem of uneven material distribution in traditional equipment.

The application relates to the technical field of heat exchange, in particular to a high-efficiency shell-and-tube heat exchanger and a preparation method thereof. The high-efficiency shell-and-tube heat exchanger comprises a shell, a head assembly, a tube bundle assembly, a first flow control assembly, a second flow control assembly, a first fixing assembly and a second fixing assembly. The tube bundle assembly, the first flow control assembly and the second flow control assembly are arranged along the depth direction of the shell, the tube bundle assembly penetrates through the first and second flow control assemblies and is in sliding connection with the first and second flow control assemblies, and a pitch adjusting assembly in the shell can adjust the distance between the first and second flow control assemblies. The liquid inlet part and the liquid outlet part are diagonally distributed, the first and second flow control assemblies are combined to guide the fluid flow, and a pressure stabilizing part and a heat conduction assembly are arranged. The tube bundle assembly adopts a multi-stage variable-diameter design, and the second fixing assembly comprises a flow collecting piece and a fixing piece. The above scheme avoids the mixing of the tube-side medium and the shell-side medium, reduces the thermal expansion coefficient of the connection part and stress concentration, solves the problem of uneven heat transfer efficiency caused by uneven distribution of the shell-side fluid, and improves the temperature uniformity of the heat exchanger and the heat exchange efficiency.

The utility model discloses a ball pin seat for automobile steering system, shell, the ball seat body of integral mould with shell, the bushing of being located in the ball seat body and the ball pin of bottom embedding in the bushing, the ball seat body center is equipped with the mounting hole of going through up and down, the bushing is located in the mounting hole, and the bottom of mounting hole is connected with the compression seat of screw thread, is equipped with the oil storage cavity in the compression seat, and the bottom of bushing is equipped with a plurality of drainage holes of uniformity in the circumference, and the both ends of drainage hole communicate bushing inside and oil storage cavity, and the clearance between ball pin and bushing is filled with lubricating oil, and the oil storage cavity is filled with the inflation graphite - paraffin compound, the inner wall of drainage hole is processed to have spiral flow guide groove, and the inflation graphite - paraffin compound filled in the oil storage cavity melts and expands when temperature rises, and the stored lubricating oil is pumped back to bushing and realizes self -lubricating in reverse, and the inflation graphite promotes lubricating oil microcirculation under the vibration of vehicle, reduces the wear and tear of ball pin seat, prolongs the life.

The invention discloses an efficient heating furnace core pipe which comprises a pipe body, a main air pipe and a plurality of branch air pipes. The pipe body is a hollow cylinder with two open ends; the main air pipe is arranged in the pipe body in a penetrating mode, the two ends of the main air pipe penetrate out of the ends of the pipe body, the length direction of the main air pipe is parallel to the axis of the pipe body, the branch air pipes are arranged on the main air pipe in the radial direction, and the branch air pipes are arranged in the length direction of the main air pipe at intervals. The branch air pipes are respectively communicated with the main air pipe, and air outlets are formed in the branch air pipes. Generally, only an air inlet is designed at the front end of a furnace tube of a rotary furnace, gas distribution in the furnace is uneven, and reaction efficiency is low, according to the design of a main air tube and branch air tubes, gas is input from the main air tube, the branch air tubes arranged at intervals in the length direction of the main air tube output gas in different areas of a tube body, and the problem that gas distribution in the furnace is uneven is solved; the reaction efficiency is improved.

This invention discloses a preparation process for a targeted drug delivery system based on the synergistic effect of Lamp2b and IMTP, comprising the following steps: constructing cells overexpressing the Lamp2b-IMTP fusion protein, culturing cells overexpressing the Lamp2b-IMTP fusion protein, thereby obtaining the targeted drug delivery system. The Lamp2b / IMTP synergistic targeted drug delivery system obtained by this invention allows for the specific accumulation of drugs in target cells, such as tumor cells, achieving precise drug delivery. The fundamental localization role of Lamp2b: Lamp2b is a naturally occurring transmembrane protein on the surface of exosomes, responsible for mediating the "initial recognition" between exosomes and recipient cells, ensuring that the delivery system, with exosomes as the core carrier, can be effectively recognized and bound by cells, avoiding rapid clearance by the body as a "foreign substance."

The application discloses a lactoferrin freeze-dried powder and a preparation method thereof, and relates to the technical field of food processing and biological products. The preparation method comprises the following steps: placing a lactoferrin solution in a freeze-drying device, supercooling the lactoferrin solution to obtain a supercooled sample; starting a forced freezing program to cool the supercooled sample to below-35 DEG C, and rapidly freezing the supercooled sample for 1-3 hours to obtain a rapidly frozen sample; and sequentially performing sublimation drying and resolution drying on the rapidly frozen sample under vacuum conditions. In the application, supercooling is performed before freezing, the freezing process can be actively and accurately controlled, and the flowability of the lactoferrin freeze-dried powder can be significantly improved by inducing the formation of small and uniform ice crystals; and the method is safe and efficient without the need of adding a flow agent.