22results about How to "Evenly wrapped" patented technology

The utility model discloses a novel protection layer structure of a prefabricated vertical component, which relates to the field of concrete structure construction, the cross section of the structure is a component main body of a rectangular cylinder, a main framework support is arranged in the component main body, a groove is arranged on the side surface for accommodating a transverse steel bar, a curved surface reed is arranged at the opening of the groove, and U-shaped hooks inclined inwards are arranged at the two ends of the component main body. Materials of the main framework are selected according to the thickness of a vertical component, and a component body is filled with fine aggregate concrete or high-strength mortar. The working mechanism is as follows: firstly prefabricating the tire membrane, installing the main framework and the hook during cast-in-place, and pouring the filler. The structure can effectively avoid many defects caused by the fact that the protective layer is too thick or too thin, and compared with the prior art, the structure has the remarkable beneficial effects of guaranteeing structural stability, preventing steel bar corrosion, improving construction quality and structural performance and the like.

The invention relates to a vortex ring pollination device for blueberries. A pollen supply system; the cylindrical pollination cavity is arranged on the lower side of the pollen supply system and is communicated with the pollen supply system; the pollination cavity is sleeved with the outer-layer cavity, the top of the outer-layer cavity is connected with the pollination cavity in a sealed mode, and the bottom of the outer-layer cavity is located on the lower side of the pollination cavity and provided with a flexible sealed opening; the vortex ring generation system is mounted on the outer-layer cavity and is communicated with the inner cavity of the pollination cavity; the pollination shell is arranged outside the pollen supply system, the pollination cavity, the outer layer cavity and the vortex ring generation system in a crossing and sleeving manner, an opening is formed in the bottom of the pollination shell and is used for mounting the flexible sealing opening, and a side wall opening for the vortex ring generation system to work is formed in the side edge of the pollination shell. By means of the airflow-driven fan-screw rod linkage design, integration of three functions of pollen blockage prevention, pneumatic stirring and mixing and downward pushing is creatively achieved, the structure is compact, additional motor driving is not needed, and reliability is high.

The invention relates to the technical field of firework cylinders, in particular to a firework mold pressing cylinder based on cassava flour pregelatinization and a preparation method thereof, and the mold pressing cylinder is prepared from the following raw materials in parts by weight: a framework material compounded by crystal transformation method II type anhydrous gypsum and calcium carbonate stone powder, pregelatinized cassava flour, wood fibers, stearic acid and a proper amount of water. The tapioca flour is pre-gelatinized by warm water at 40-60 DEG C, and the pre-gelatinization degree is greater than or equal to 80 The crystal transformation method II type anhydrous gypsum is prepared from ardealite through a low-temperature crystal transformation method. The preparation method comprises the following steps: pre-gelatinizing the tapioca flour, pulping, mixing with other dry blends and hot water, and finally carrying out high-temperature compression molding. Through the synergistic effect of the pre-gelatinized tapioca flour and the crystal transformation method gypsum, the dry basis dosage of the tapioca flour is remarkably reduced, meanwhile, the compressive strength and the falling resistance of the mold pressing barrel are greatly improved, the multiple purposes of reducing the cost, improving the performance and absorbing industrial solid waste phosphogypsum are achieved, the product quality is stable, and the mold pressing barrel is suitable for industrial production.

The invention relates to the technical field of transformers, in particular to a dry-type transformer iron core fixing structure. The dry-type transformer iron core fixing structure comprises a fixing assembly, a base assembly and a sliding rail frame. The fixing assembly comprises two fixing sleeve plates located on the front face of the iron core and symmetrically distributed relative to the iron core, and side cover plates are arranged on the left side and the right side of the iron core correspondingly. Base assemblies are arranged at the bottoms of the fixing assemblies; the sliding rail frame comprises an upper rail and a lower rail which are parallel to each other, and the upper rail and the lower rail are connected through a frame. A heat transfer kit is arranged at the top of the iron core and is in sliding connection with the upper track; the base assembly is slidably connected with the lower rail. Stable restraint and vibration isolation of the iron core are achieved through cooperation of multi-point wrapping type fixing and a buffering vibration reduction mechanism, efficient heat dissipation and surface self-cleaning are achieved in combination with directional air cooling and micro-displacement disturbance, and therefore the operation stability of the transformer is comprehensively improved, and the service life of the transformer is comprehensively prolonged.

The present application relates to the technical field of medicine and chemical industry, in particular to a kind of alginate / nano lanthanum hydroxide composite microspheres and its preparation method and application.The composite microspheres use sodium alginate as organic matrix material, and nano lanthanum hydroxide as inorganic filling phase, which are prepared by electrospray technology, and can realize the uniform dispersion and wrapping of nano lanthanum hydroxide in alginate microspheres.The size of the composite microspheres can be adjusted as needed between 235.5 μm and 748.4 μm, and the mass ratio of alginate to nano lanthanum hydroxide can be adjusted as needed within 1: (0.5-1.5).The composite microspheres of the present application have a phosphorus binding capacity of 41.0 mg / g-90.0 mg / g in a gastric acid environment with pH=2, and excellent phosphorus binding ability, which can be used as an oral phosphorus binding agent for the treatment of hyperphosphatemia, providing a new technical solution for clinical intervention of hyperphosphatemia.

The utility model discloses a water supply and drainage anti-freezing device for municipal engineering, and relates to the technical field of water supply and drainage anti-freezing. The water supply and drainage pipe assembly comprises a first water supply and drainage pipe and a second water supply and drainage pipe, and the two ends of the first water supply and drainage pipe and the two ends of the second water supply and drainage pipe are each provided with a flange ring. The surface of the first water supply and drainage pipe and the surface of the second water supply and drainage pipe can be fully wrapped through the heat preservation cotton, so that a good heat preservation effect can be achieved, then the outer side face of the heat preservation cotton can be evenly wrapped through the limiting component, and the situation that adhesion is not tight enough after viscosity is reduced, and the service life of the heat preservation cotton is prolonged can be avoided. And meanwhile, the arranged sealing limiting shell can also achieve a good sealing and heat preservation effect on the joint of the first water supply and drainage pipe and the second water supply and drainage pipe, and therefore the anti-freezing effect of the anti-freezing device can be further improved.

The invention belongs to the technical field of tunnel anchor cable construction, and particularly relates to a tunnel anchor cable accurate positioning construction and anchoring force detection method, which comprises the following steps of: acquiring track data in real time in a drilling process through a tilt angle sensor and a displacement sensor, and comparing a real-time drilling track with a preset drilling track in a three-dimensional geologic model point by point; specific numerical values and offset directions of horizontal deviation and vertical deviation are obtained according to a space calculation method in mathematics, a drill rod is adjusted by setting threshold values of the horizontal deviation and the vertical deviation, so that the drilling deviation is controlled, meanwhile, the drilling depth is corrected by combining comparative analysis of drilling pressure and a three-dimensional geologic model, and the drilling precision is improved. And the drilling depth defect caused by the attribute change of the surrounding rock is avoided.

This invention relates to the field of building materials technology, and discloses a recycled aggregate concrete prepared from construction solid waste and its preparation method. The raw materials of the concrete include ordinary Portland cement, recycled coarse aggregate, natural fine sand, chemically targeted modification bags, quicklime powder, inducing water, and conventional mixing water. The preparation method is as follows: Dry recycled coarse aggregate containing old mortar is mixed with chemically targeted modification bags in a dry state, and then inducing water is sprayed evenly to allow the effective components to penetrate into the pores of the aggregate. Subsequently, quicklime powder is added, utilizing its exothermic effect to stimulate the modification bags to form micro-expansion crystalline precipitates within the pores, physically sealing micro-cracks in situ. Finally, cement, sand, and mixing water are added and homogenized to form the concrete. This invention effectively reduces the water absorption rate of recycled coarse aggregate and improves its strength, ensuring the overall workability and mechanical properties of the concrete, and achieving efficient and low-cost resource conversion of construction solid waste.

The wood product polishing equipment comprises a double-sided polishing grinding structure, one side of the double-sided polishing grinding structure is fixedly connected with a thickness switching structure, the double-sided polishing grinding structure comprises an air pressure adjusting assembly fixed to the rear side of a synchronous adjusting assembly, the synchronous adjusting assembly comprises an adjusting operation table capable of changing wood product adjusting contact, the rear side of the adjusting operation table is fixedly connected with mounting columns capable of fixedly supporting two mounting frames, first sliding grooves are formed in the inner sides and surfaces of the two mounting frames, first sliding blocks matched with the first sliding grooves are slidably arranged in the first sliding grooves, the first sliding blocks are fixedly connected with first through hole blocks provided with ball nuts, and the ball nuts are arranged to slide along the mounting frames in opposite directions.

This utility model discloses a method and apparatus for preparing an aluminum-clad steel wire using induction heating, belonging to the field of steel wire armor. It includes a first fixing member, a second fixing member on one side of the first fixing member, an induction coil for heating between the first and second fixing members, a covering component for coating the steel wire strand with an aluminum layer in the middle of the induction coil, a moving component installed below the covering component, a first lead screw and a second lead screw symmetrically positioned above the middle of the first and second fixing members, and both the first and second fixing members include an upper fixing frame, with a lower fixing frame symmetrically positioned below the upper fixing frame. This design, by setting the first and second fixing members, allows the apparatus to directly coat damaged cables with an aluminum layer without removing the outer sheath, and to test the resistance value after coating to ensure the high efficiency and stability of the coating process.

This application relates to the field of cold cathode field emission material preparation technology, and discloses a method for preparing a graphene-diamond composite structure to improve the field emission performance of diamond. The method involves first dispersing nanodiamonds and graphene oxide in a deep eutectic solvent; then adding boric acid to induce an in-situ sol-gel transformation under heating, forming a gel network that locks the dispersed phase; followed by microwave-assisted interface activation and gradient high-temperature carbonization, and finally cleaning and drying to obtain the product. This invention effectively suppresses phase separation and agglomeration during pyrolysis through a gel solidification mechanism, and utilizes the deep eutectic solvent and boric acid pyrolysis to achieve in-situ co-doping of nitrogen and boron, constructing a low-barrier continuous conductive channel on the diamond surface, and realizing tight electrical interconnection between components. This method is simple and controllable, and the resulting composite material possesses excellent conductivity, low turn-on electric field, and high emission stability, thus improving the electron emission efficiency of cold cathode devices.

This invention discloses an intelligent agricultural sowing device and method for agricultural planting, relating to the technical field of intelligent sowing equipment for legume seeds. It includes a sowing hopper, with a support plate vertically mounted on its lower surface. A drive wheel is rotatably mounted on the lower end of the support plate via a rotating shaft. A connecting rod is mounted on the side of the sowing hopper. A furrow opener and a soil covering device are mounted on the sowing hopper. The sowing hopper is open at both the top and bottom. A sowing block is mounted inside the lower part of the sowing hopper, with its lower surface flush with the lower surface of the sowing hopper. A matching sowing roller is rotatably mounted in a circular groove on the sowing block. This invention ensures that the most active microbial agent is sown into the soil, fundamentally guaranteeing the inoculation effect and nitrogen fixation efficiency in the field. Simultaneously, by utilizing the Venturi effect within the negative pressure synchronous atomization sowing tube, it achieves near-uniform, seamless coating of irregular legume seeds, avoiding waste of microbial agent.

The application relates to the field of cable processing, in particular to a cable adhesive tape winding mechanism for aerospace, which comprises an adhesive tape output mechanism, a displacement mechanism and a cable rotating mechanism. The adhesive tape output mechanism comprises an adhesive tape rack, an output motor, an output wheel, a sensing wheel, a mounting rack, a first position sensor and a second position sensor. The adhesive tape is wound on the adhesive tape rack. The output wheel is arranged on one side of the adhesive tape rack and is in transmission connection with the output motor. The sensing wheel is arranged on the mounting rack and can move along the height direction of the mounting rack. The mounting rack is provided with the first position sensor and the second position sensor. The first position sensor and the second position sensor are electrically connected with the output motor. The displacement mechanism is connected with the adhesive tape output mechanism. The displacement mechanism drives the adhesive tape output mechanism to move along the first direction. The cable rotating mechanism is provided with the cable extending along the first direction. The cable rotating mechanism drives the cable to rotate. The adhesive tape output can be controlled to match the cable rotation, so that the adhesive tape is uniformly pasted.

A mold and method for manufacturing a white mold for a single-liquid bimetallic lost foam casting tooth sleeve, relating to the field of lost foam casting technology, is disclosed to solve the problems of precious metal waste, complex processes, easy damage to the white mold, and uneven molybdenum distribution in existing tooth sleeve local molybdenum addition techniques. The mold includes an upper mold and a lower mold to form a cavity, which is divided into a chamber section and a toothed section. The chamber section is equipped with a movable block and a pin. An injection hole is provided at the junction of the lower mold chamber tip and a negative pressure suction hole is provided on the tip side of the upper mold toothed section. The method involves cutting molybdenum or molybdenum alloy wire into small segments and packaging them. Before mold closing, these segments are placed into the toothed section cavity. During injection, negative pressure is applied to suspend the molybdenum wire and encapsulate it with beads. The negative pressure is stopped when half of the wire has been injected. After injection and sealing, the white mold is obtained through steam heating, pressure holding, shaping, cooling, and demolding. This invention achieves precise enrichment and uniform distribution of molybdenum, improves molybdenum utilization, reduces manufacturing costs, simplifies the process, avoids damage to the white mold, extends the life of the tooth sleeve, and is suitable for large-scale production.

The utility model relates to the technical field of grassland ecological restoration, and discloses a grass seed spray-seeding device for ecological vegetation restoration, which comprises a trolley, two sides of the trolley are fixedly connected with support frames, opposite sides of the two support frames are rotatably connected with fixing shafts, and the fixing shafts are rotatably connected with the trolley. A mixing tank is fixedly connected between the opposite ends of the two fixing shafts, a gear box is fixedly connected to one side of one supporting frame, a rotating assembly capable of driving the fixing shafts to rotate is arranged on the back face of the gear box, and the top of the mixing tank rotationally communicates with a hollow pipe. Through cooperative use of structures such as the fixed shaft, the hollow pipe, the rotating assembly and the pumping assembly, the angle of the mixing tank can be automatically adjusted when a slope is encountered in the spray-seeding process through rotation of the worm gear and the worm and by utilizing the self-locking characteristic of the worm gear and the worm, it is ensured that pesticide liquid can be thoroughly sucked and sprayed, waste is avoided, and the spraying efficiency is improved. The use efficiency of liquid medicine is improved, and resources are saved.

The utility model discloses a tapioca flour ball machine for processing horseshoe popping beads, and relates to the technical field of food processing, the tapioca flour ball machine for processing horseshoe popping beads comprises a processing box, the left side of the top end of the processing box is fixedly connected with a base, and the tapioca flour ball machine for processing horseshoe popping beads is provided with a spiral channel, a second vibrator and an arc plate. Firstly, tapioca flour is poured into a vibrating disc, then cleaned diced water chestnuts are poured into the vibrating disc, a first vibrator and a second vibrator are started, the diced water chestnuts shake in the vibrating disc through vibration of the first vibrator to be gradually wrapped with flour and become round, and finally the diced water chestnuts are discharged into a processing box through a discharging port. When the water chestnut dices pass through the spiral channel, the contact area of the water chestnut dices and the solution is increased, then the water chestnut dices fall into the filter screen again, bubbles generated after mixing are removed, finally, the water chestnut dices sequentially drop into the soaking box through the dropper, seaweed gel on the outer portion reacts with calcium lactate, the peripheries of the water chestnut dices are solidified into balls, and the problem that the device cannot conduct automatic powder wrapping processing is solved.

This disclosure provides a silicon-carbon anode sheet, its preparation method, and a soft-pack lithium battery. The preparation method of the silicon-carbon anode sheet involves: dissolving water-soluble conductive polyaniline in an organic solvent, mixing it with CMC adhesive, and then mixing it with silicon-carbon slurry and a multifunctional organophosphonic acid crosslinking agent (mixing temperature: 15℃-25℃) to obtain an anode slurry; coating the anode slurry onto a negative current collector to obtain a silicon-carbon anode sheet semi-finished product; and sequentially subjecting the silicon-carbon anode sheet semi-finished product to pre-baking (90℃-120℃) and vacuum drying (70℃-90℃, time: 2h-5h) to obtain the silicon-carbon anode sheet. This method, by adding multifunctional organophosphonic acid crosslinking agents and water-soluble conductive polyaniline, facilitates the formation of a three-dimensional conductive suppression network with high conductivity, uniform and continuous conductivity, strong toughness and strong self-healing ability. This enhances the constraint on the negative electrode slurry, reduces the volume expansion rate to <15%, inhibits silicon-carbon cracking, and improves the self-healing ability of the three-dimensional conductive suppression network, thus broadening the application of high-capacity silicon-carbon negative electrode sheets in soft-pack lithium batteries.

This invention discloses a rotary reaction apparatus and process suitable for high-temperature molten salt pyrolysis of biomass. The reaction apparatus includes a molten salt purging device, a molten salt inlet, a compartmentalized molten salt tank, an integrated stage, a nickel-based alloy mesh, a motor, a reaction apparatus shell, a gas detection system, a temperature detection and control system, baffles, and a heating layer. The apparatus is made of high-temperature and corrosion-resistant materials, making it suitable for high-temperature and highly corrosive environments. Based on the synergistic effect of the molten salt characteristics and the reaction apparatus, the utilization efficiency of the molten salt is effectively improved and the mass and heat transfer processes are enhanced through the significant thinning and renewal rate of the liquid film under hypergravity conditions. By adjusting the molten salt feed rate and the rotation speed of the rotary table, the pyrolysis process under different mass and heat transfer efficiencies can be explored. This invention can be extended to reaction systems such as liquid metals. The assembly of this invention is relatively efficient, with low investment, and it can explore the influence of mass and heat transfer during the pyrolysis process on the products, thereby obtaining relevant thermodynamic and kinetic parameters.

The invention provides a preparation method of a semi-rigid bonded magnet, which comprises the following steps: S1, dissolving a silane coupling agent in an ethyl acetate solvent to obtain a coupling agent solution; s2, mixing and uniformly stirring the neodymium iron boron rapid quenching magnetic powder and a coupling agent solution under a vacuum condition until the ethyl acetate solvent is completely volatilized, and drying to obtain pretreated magnetic powder; s3, dissolving an elastomer binder in an ethyl acetate solvent to obtain a binder solution; s4, the pretreated magnetic powder and the binder solution are mixed and stirred uniformly under the vacuum condition until the ethyl acetate solvent is completely volatilized, and mixed glue magnetic powder is obtained; s5, mixing and stirring the mixed rubber magnetic powder and zinc stearate to obtain composite magnetic powder; s6, the composite magnetic powder is subjected to pressure maintaining at the normal temperature, and an uncured magnetic blank is obtained; and S7, the uncured magnetic blank is subjected to heat preservation at the temperature of 150 DEG C + / -10 DEG C, and the semi-rigid bonded magnet is obtained. The magnetic powder is not easy to agglomerate, and the interface bonding capacity is improved.

This invention relates to the field of composite material preparation technology, specifically to a method for preparing continuous glass fiber reinforced polyurethane core profiles, comprising the following steps: preparing continuous glass fiber, isocyanate component, polyol component, chain extender, coupling agent, catalyst, antioxidant, and ethanol, wherein the isocyanate index of the isocyanate component and the polyol component is 0.8-1.1. This invention effectively solves many defects of existing technologies by constructing a multi-dimensional synergistic optimization system, possessing significant technical advantages and practical value. Regarding interfacial bonding, a composite modification method is adopted, which significantly improves the interfacial bonding strength between the fiber and the polyurethane matrix, fundamentally improving the conduction efficiency of the material's mechanical properties, resulting in a significant improvement in the material's core mechanical properties such as tensile, bending, and impact resistance.

The invention belongs to the technical field of semiconductor material preparation and new energy, and particularly discloses flexible water photovoltaic fabric based on MXene and Al2O3 and a preparation method of the flexible water photovoltaic fabric. The flexible water photovoltaic fabric based on MXene and Al2O3 comprises a flexible cotton cloth substrate, a flexible water photovoltaic fabric layer and a flexible water photovoltaic fabric layer, the functional coating is loaded on the surface of the cotton cloth fiber and in interwoven pores; the functional coating is of a graded composite structure containing Al2O3 nano particles and MXene nano sheets; wherein the Al2O3 nanoparticles are used as a water evaporation induced charge generation source; the MXene nanosheets are mutually lapped to form a three-dimensional conductive network, and the three-dimensional conductive network is used for rapidly extracting and conducting charges generated at the interface of the Al2O3 nanoparticles. The flexible water photovoltaic fabric prepared by the invention has excellent flexibility and better current output performance.

This invention discloses a production process for interweaving wool-type composite yarn with silk. The steps are as follows: the tension of both wool and iterated polyester yarn-D is 1g, the twisting tension is 15±0.5g, the twist is 5T, and after setting and forming into bobbins, wool-type composite yarn is obtained; the warp A, warp B and C of the warp and weft interweaving are all raw silk, the weft A is 40N / 1 wool, and the weft B is wool-type composite yarn; the interwoven fabric is immersed in a scouring tank and the sericin of the raw silk warp is removed intermittently, the scouring tank is filled with silk and wool liquid protease; disperse dye and wool reactive dye are placed in the same dyeing vat, dyeing is first carried out at room temperature, and then the temperature is raised, kept warm and lowered in sequence, and the residual water after dyeing is discharged after cooling; during alkaline washing, the temperature is raised, kept warm and lowered, and the residual water after washing is discharged after cooling; the dyed fabric is immersed, squeezed and then hot air stretched and dried, and then low temperature set in eight boxes. Using the above technical solution, the composite yarn has high quality, the fabric is dyed evenly with less staining, and the iterative polyester yarn-D has good color fastness and excellent wearability.