24results about How to "Change density" patented technology

The invention belongs to the technical field of environmental treatment, and discloses a nano RuAg / heterojunction MoO3 / TiO2 composite catalyst as well as a preparation method and application thereof, and the nano RuAg / heterojunction MoO3 / TiO2 composite catalyst is prepared by compounding mesoporous TiO2 with microporous MoO3 to form heterojunction MoO3 / TiO2 and then compounding the heterojunction MoO3 / TiO2 with a RuAg alloy. The nano RuAg / MoO3 / T iO2 has a mesoporous-microporous gradient structure, has a large specific surface area, and has good adsorption performance and high catalytic degradation performance on VOCs (Volatile Organic Compounds). According to the present invention, the composite catalyst can effectively degrade the VOCs while adsorbing the VOCs, such that the adsorption efficiency and the treatment effect of the molecular sieve on the VOCs are substantially improved, the integration of the adsorption and the degradation is achieved, and the VOCs treatment process flow is simplified.

The invention discloses an electrode cap for controlling resistance spot welding nugget deviation of an aluminum workpiece and a matched welding method, the electrode cap comprises a first cylinder, a geometry and a second cylinder, the geometry is in smooth transition to a welding end face through a cambered surface or a conical surface to optimize current distribution, so that the nugget is promoted to deviate towards a thin plate side in the welding process, and the welding quality is improved. The fusion depth of the thin plate side is effectively increased; in the welding process, the electrode cap is used in cooperation with a traditional spherical electrode cap without special design, and a set of complete welding solution is formed. According to the scheme, three key stages of pre-pressing, power-on welding and cooling are covered, and high efficiency and stability of the welding process are ensured by accurately regulating and controlling parameters of each stage, such as pressure, welding current, power-on duration and cooling time. According to the method, the welding quality of the aluminum alloy workpieces with different thicknesses is improved, the problem of nugget deviation is effectively solved, and a more reliable and efficient welding technology choice is provided for the high-end manufacturing fields of new energy automobiles, aerospace and the like.

The invention discloses a camellia oleifera SNP (Single Nucleotide Polymorphism) molecular marker combination and application thereof. The camellia oleifera SNP molecular marker combination comprises at least one of 50 SNP molecular markers and 454 SNP molecular markers, and the physical positions of the 50 SNP molecular markers and the 454 SNP molecular markers are determined on the basis of sequence alignment of a camellia oleifera reference genome GCA039905865.1. The camellia oleifera SNP molecular marker combination can be effectively used for molecular marker breeding of camellia oleifera, the camellia oleifera SNP molecular marker combination is used for preparing a first type of whole genome liquid phase chip of camellia oleifera, and the application cost of genetic diversity analysis, QTL positioning, GWAS analysis and the like in scientific research of camellia oleifera is effectively reduced; the problem that no applicable product exists in camellia oleifera molecular auxiliary breeding and whole genome selective breeding is solved, and the process of camellia oleifera basic research and breeding is accelerated.

The utility model belongs to the technical field of cleaning machines, and particularly relates to a multifunctional cleaning frame for an ultrasonic cleaning machine, which comprises a box body, mounting racks for mounting the box body are arranged on two sides of the box body, a plurality of groups of uniformly distributed fixing blocks are symmetrically arranged on the inner wall of the box body, and a placing plate is movably connected between two fixing blocks in each group. A sliding groove is formed in the upper end face of the fixing block, the containing plate comprises a frame body, a transverse rod and a longitudinal rod, the transverse rod and the longitudinal rod are movably connected with the frame body, the frame body comprises an L frame, a transverse frame and a longitudinal frame which are spliced together, protruding strips used for stretching into the sliding groove are arranged on the lower end faces of the L frame, the transverse frame and the longitudinal frame, and a plurality of connecting grooves allowing the transverse rod and the longitudinal rod to be inserted are evenly formed in the L frame, the transverse frame and the longitudinal frame. A plurality of slots for the longitudinal rods to penetrate through are uniformly formed in the cross rod; a plurality of hooks are arranged on the lower end surface of the cross rod; compared with the prior art, the utility model has the advantages that the placing space is saved, and meanwhile, the cleaning device is suitable for cleaning articles with various specifications and placing states.

The utility model provides a magnetorheological fluid damper, which belongs to the technical field of dampers, and comprises a shell, magnetorheological fluid, a plurality of magnetic parts, a plurality of elastic elements, a plurality of elastic elements, a plurality of elastic elements and a plurality of elastic elements, the rotating rod is rotationally arranged in the shell, the extending end of the rotating rod is rotationally connected with the shell through a thread structure, and when the rotating rod is subjected to axial force, the rotating rod can rotate on the shell through the thread structure; the detection piece is arranged on the shell, the rotating rod is matched with the detection piece, and when the rotating rod axially moves relative to the shell to abut against the detection piece, the detection piece can generate an optical signal according to the abutting pressure of the rotating rod; according to the utility model, when the rotating rod abuts against the detection piece, the detection piece generates an optical signal, so that the stress condition of the rotating rod at the moment can be calculated according to the abutting pressure recorded by the detection piece, the working state of the damper under the vibration condition is recorded, and whether the damper is in a healthy qualified state or not is judged after vibration.

The utility model relates to the technical field of biscuit production, and discloses a biscuit surface ornament spreading device which comprises two frame bodies, a plurality of rotating rollers are rotationally connected to the close sides of the two frame bodies, a conveying belt is arranged on the outer walls of the rotating rollers in a sleeved mode, a shell is arranged on the top sides of the two frame bodies, and the shell is arranged on the top sides of the two frame bodies. The left side and the right side of the shell are fixedly connected with a frame body through fixing frames, the rear end of the frame body is rotationally connected with a rotating rod, the left end of the rotating rod is connected with the rotating roller at the rearmost end through a belt wheel set, a driving assembly is installed on the left side of the rotating roller at the rearmost end, and the right end of the rotating rod is connected with a sliding plate through a reciprocating assembly. According to the utility model, the discharging plates with different through groove densities and sizes can be mounted on the sliding plate, so that the material scattering amount and the material scattering density of ornaments are changed, different production and processing requirements on biscuits are met, the use amount of raw materials is saved, the flexibility of production work is greatly improved, the cost of the raw materials is saved, and waste is reduced.

The invention discloses a planar chiral [2.2] paracyclophane alkane monophosphine ligand pEPCP as well as a preparation method and application thereof, and relates to the technical field of chemical catalysis, the planar chiral [2.2] paracyclophane alkane monophosphine ligand pEPCP is characterized by comprising a racemate or an enantiomer, and the structural formula I of the monophosphine ligand pEPCP is as follows: # imgabs0 #. Different types of ether substituents are introduced into the structure of a unique large-steric-hindrance electron-rich rigid skeleton formed by connecting two benzene rings at para-positions through two ethylidene groups, so that the electron cloud density and steric hindrance of aromatic rings directly connected with phosphine ligands are changed. In addition, the ether substituent can also be used as a weak coordination group and participates in adjusting a dihedral angle of ligand chelation. The metal, the ligand and the substrate form the most appropriate coordination environment in the catalysis process, so that the corresponding catalytic reaction has the advantages of high reaction activity, good enantioselectivity, wide substrate universal application range and the like, is particularly suitable for asymmetric coupling reaction catalyzed by transition metal, and has economic practicability and industrial application prospects.

The utility model relates to the technical field of three-dimensional culture frames, in particular to a three-dimensional culture frame structure which comprises a bearing plate, a connecting plate, a first mounting plate and a second mounting plate. The connecting plate is connected with the end face of one side of the bearing plate, the other end of the connecting plate is connected with the first mounting plate, and three fixing blocks are arranged on the end face of the same side of the bearing plate and are the fixing block a, the fixing block b and the fixing block c respectively. The second mounting plate is connected to the end, away from the bearing plate, of the fixing block a. A plurality of culture racks are arranged and are distributed side by side; the first mounting plate and the second mounting plate are provided with folding and unfolding mechanisms used for lifting or putting down the culture frame; the ends, away from the bearing plate, of the fixing block b and the fixing block c are provided with balance weight assemblies used for assisting the folding and unfolding mechanism. According to the utility model, the winding and unwinding mechanisms are arranged on the first mounting plate and the second mounting plate, so that the multi-groove line wheels can be driven by the motor to lift and unfold the culture racks, the density between the culture racks is changed, and the space utilization rate is improved.

The invention discloses an open-close type spraying mechanism for synthetic leather processing and a spraying process of the open-close type spraying mechanism. The open-close type spraying mechanism comprises a processing base, a conveying mechanism, a side support, a feeding pipe, a material distribution bin and an open-close type spraying assembly. An external lifting plate drives an internal lifting plate to move up and down through a lifting type guide rod, in this way, the position states of a first opening and closing pipe and a second opening and closing pipe can be driven, then the opening and closing states of a plurality of first spray heads and a plurality of second spray heads can be controlled, and the spraying width and density below a material distribution bin can be changed; and convenient and flexible adjustment can be carried out according to different widths of products.

The utility model relates to the technical field of PCBs (printed circuit boards), and discloses a device for guaranteeing the stability of automatic adding overflow of HDI (high density interconnect) products of PCBs, which comprises a liquid medicine bin, a top cover plate is fixedly connected to the upper top end of the liquid medicine bin, and the upper top end of the top cover plate penetrates into the liquid medicine bin and is fixedly connected with a liquid medicine adding pipe for adding medicine. According to the utility model, the aeration mechanism is arranged, the medicament is added into the medicament bin through the medicament adding pipe, and the medicament exists in the medicament bin, so that when the density of the new medicament is smaller than that of the original medicament, the new medicament is extruded to the surface after being in contact with the original medicament, and the bath solution cannot be replaced; at the moment, an aeration mechanism can be adopted to accelerate mixing of chemicals in the chemical bin, so that the density between the new chemicals and the original chemicals is rapidly changed, and the situation that the density of the new chemicals is too low, the new chemicals are squeezed to the surface by the original chemicals, the new chemicals are discharged and cannot be replaced, and the processing quality of products is affected is avoided.

The invention belongs to the technical field of alloy additive manufacturing, and particularly relates to a method for improving alloy compactness based on laser printing parameters. A laser printing parameter interval is set, and a high-temperature alloy block is prepared through an orthogonal test within a certain body energy density interval range; a batch of printed alloy blocks are subjected to density analysis, the average density of each alloy block is obtained, and the optimal energy density interval of alloy printing is determined; in the optimal body energy density interval, the influence rule of the laser printing parameters on the density is analyzed, and the final optimal body energy density and the laser printing parameters are determined; and according to the determined optimal body energy density and laser printing parameters, alloy printing preparation is conducted. According to the method, on the premise of determining the optimal energy density, an orthogonal experiment is carried out with the laser power, the scanning speed and the scanning interval as factors, the influence of laser printing parameters on the density is determined, and printing preparation of the alloy is guided.

The present invention discloses a preparation method and application of an OP bidentate imine vanadium complex, and belongs to the technical field of olefin polymerization catalysts. The vanadium complex provided by the present invention is used as a main catalyst, and under the activation of a small amount of a co-catalyst, can catalyze the homopolymerization of ethylene, and has the advantages of high catalytic activity, good thermal stability, long service life, and applicability to a variety of solvent systems; it catalyzes the copolymerization of ethylene and α-olefins, and can obtain a polymer product with a high comonomer content with ultra-high activity catalysis; at the same time, the metal complex can also catalyze the copolymerization of ethylene and a hydroxyl-containing polar monomer to obtain a functionalized polyolefin product.

The invention discloses a composite solid waste synergistic soil roadbed filler as well as a preparation method and application thereof, and belongs to the technical field of solid waste utilization and road filling roadbeds. The composite solid waste synergistic soil roadbed filler comprises the following raw materials in percentage by weight: 60wt% of coarse-grained soil, 8-15wt% of waste clay brick regenerated powder and 25-32wt% of circulating fluidized bed sulfur-fixing ash. The composite solid waste synergistic soil subgrade filler has high bearing capacity, resilience modulus and compressibility, and a dense honeycomb gel network structure can be formed through the synergistic effect of the circulating fluidized bed sulfur-fixing ash and the waste clay brick powder, so that the relative sliding of solidified soil particles is effectively limited, the shear strength of the solidified soil is effectively improved, and the soil subgrade subgrade filler has a good application prospect. Therefore, the mixed roadbed material is endowed with excellent mechanical properties through the synergistic effect of the contained components.

The invention belongs to the technical field of safety guardrails, and particularly relates to a bendable PVC safety guardrail which comprises a cement table and a fixing base installed on the cement table, stand columns are installed on the fixing base, inserting blocks are installed in the stand columns in a sliding mode, and the stand columns are connected with transverse rods through the inserting blocks. Inclined sliding grooves are formed in the stand columns, sliding blocks are installed on the inserting blocks, the sliding blocks are in sliding fit with the inclined sliding grooves, inserting grooves are formed in the inserting blocks, inserting heads are fixedly installed on the transverse rods, the inserting heads are inserted into the inserting grooves, chamfers are formed in the inserting heads, disc springs are installed in the stand columns, and vertical rod assemblies are installed on the transverse rods. If the length of the cross rod is relatively long, under the matching of the sliding block on the inserting block and the inclined sliding groove, the inserting block and the cross rod integrally move towards the interior of the stand column, and enough mounting space is provided for the cross rod; if the bending angle of the transverse rod is too large or too small, one end of the transverse rod is inserted into the inserting groove in the inserting block through the inserting head, the inserting block and the transverse rod synchronously rotate, and the other end of the transverse rod gradually aligns to the other inserting block and is inserted into the other inserting block.

A double-form hole tray device with a micro-hole hole tray wall comprises a plurality of single hole trays and a base plate, a plurality of drainage holes are formed in the base plate, the single hole trays are attached to one another and arranged in an array mode to form an integral hole tray, the integral hole tray is placed on the base plate, each single hole tray corresponds to one drainage hole, and wall plates, making contact with one another, of the single hole trays are fixed together. The upper portion and the lower portion of the single-hole tray are provided with openings, the single-hole tray comprises four wall plates with the same transverse length, the butt joint positions of the wall plates are connected through hinge assemblies, the hinge assemblies can achieve relative rotation of the wall plates in butt joint, and by changing the included angle between the wall plates in butt joint, the wall plates in butt joint can rotate relative to each other. And the shape of the cross section of the whole hole tray is converted between a parallelogram and a rectangle. The device can be adaptively suitable for main seedling taking modes in the market, in the seedling taking process, the compactness change of the matrix is better matched with the corresponding seedling taking mode, the seedling taking process is improved, the efficiency is improved, and meanwhile seedling taking with lower loss is achieved.

The embodiment of the present invention provides an electrical interconnection structure, an electronic device and a manufacturing method thereof, which relates to the field of MEMS devices, and is used to provide a reliable electrical interconnection structure between the MEMS device and an external circuit while sealing and packaging the MEMS device. The electrical interconnection structure includes a bonding metal located on one side of a substrate, a first dielectric layer and a second dielectric layer located on a side of the bonding metal away from the substrate, the first dielectric layer includes a first through hole penetrating the first dielectric layer, and the first through hole exposes the bonding metal; the first through hole is filled with a first conductive material electrically connected to the bonding metal; the second dielectric layer includes a second through hole; the second through hole is filled with a second conductive material electrically connected to the first conductive material; the orthographic projection of the second conductive material filled in the second through hole on the plane where the substrate is located covers the orthographic projection of the first conductive material filled in the first through hole on the plane where the substrate is located.

The application discloses a kind of experimental apparatus of synthesizing different component natural gas hydrate, it is related to natural gas hydrate synthesis technical field, it includes: hydrate generation unit, separable material adding unit, ball valve pressure maintaining unit and control and detection unit, hydrate generation unit includes hydrate generation bucket, the hydrate generation bucket is used to reaction generation with metal tracer particle hydrate;Separable material adding unit is used to add metal tracer particle in hydrate reaction process;Ball valve pressure maintaining unit is arranged between the material adding unit and the hydrate generation unit, for controlling the intercommunication and closure of both;Control and detection unit is used to control motor in the material adding unit moves according to instruction, and is used to receive, process and show the data of various sensors of the hydrate generation unit.The application can be synthesized while hydrate, can be added according to research needs even or layer by layer suitable metal tracer particle.

The invention belongs to the technical field of fine chemical intermediates, and particularly relates to a method for generating 2-methyl-1-butene through isomerization of 2-methyl-2-butene. The method comprises the following steps: (1) 2-methyl-2-butene enters a fixed bed reactor and is subjected to an isomerization reaction under the action of an isomerization catalyst; the pressure of the fixed bed reactor is 0.1-0.5 Mpa, the temperature is 200-250 DEG C, and the mass space velocity is 0.5-2.0 h <-1 >; (2) feeding the reacted material into a rectifying tower, rectifying and separating to obtain 2-methyl-1-butene at the top of the rectifying tower, and returning 2-methyl-2-butene obtained at the bottom of the rectifying tower to the inlet of the fixed bed reactor to continue the reaction; the isomerization catalyst comprises active components and a carrier, wherein the active components comprise NiO and MgO. The catalyst provided by the invention has the advantages of high catalyst activity, low reaction temperature, high reaction selectivity, long catalyst life and the like, and meets market requirements.

A mold sand box compacting device for casting includes a pressing box, a supporting frame, and a clamping mechanism. The supporting frames are provided with at least two groups and are arranged in front and back mirror images. The pressing box is movably arranged between the supporting frames, and the clamping mechanism is arranged in the middle of the supporting frame. This scheme adopts mechanical sand pressing to achieve fixed vibration and compaction of the mold sand box. After compaction, the mold sand on the surface of the sand box can be leveled. This process does not require manual access, and the compaction density of the sand box is better than the density of manual sand pressing. This scheme can change the density of the mold sand by clamping and vibrating the sand box, and the clamping distance can be changed according to sand boxes of different specifications.

The invention relates to the technical field of electrode materials, and discloses a nickel single atom with a coordination structure and a preparation method and application of the nickel single atom with the coordination structure, and the general formula of the nickel single atom with the coordination structure is NiNxSy, wherein 3 > = x > = 1, 3 > = y > = 1; x and y are integers. The preparation method comprises the following steps: dispersing the Ni / ZIF-8 compound in a solvent in an inert gas atmosphere, mixing with a sulfur source, and pyrolyzing at 900-1200 DEG C for 1-4 hours to obtain the nickel monoatom with the coordination structure. The nickel monatomic with the coordination structure provided by the invention changes an electronic structure around a central Ni atom, so that the electron transfer capability of the nickel monatomic is enhanced, and electron transfer is promoted; and rich active sites are also provided, so that the polysulfide can be better anchored, the catalytic performance is improved, and the interaction between the nickel monatomic material with the coordination structure and the active substance sulfur and the oxidation-reduction reaction of the positive electrode of the lithium-sulfur battery are optimized.

The utility model relates to the technical field of traditional Chinese medicine processing devices, in particular to an anti-blocking blanking mechanism of a granulator for producing traditional Chinese medicine granules, which comprises a flaking mechanism positioned on a machine body and comprises a feeding barrel, a rotating ring connected with the lower end of the feeding barrel through an output pipe and a feeding barrel connected with the rotating ring through an output pipe. The rotating ring is connected with a driving gear through an inner gear face, the driving gear is connected with a conical part, the rotating ring is connected with a driving gear through an outer gear face, and the conical part makes contact with the output pipe through a threaded groove. The device has the advantages that the rotating ring can be driven by the driving gear to rotate, the driven gear can be driven by rotation of the rotating ring to rotate, then the conical part is driven to rotate, threads on the surface of the conical part can make contact with traditional Chinese medicine particles in the mixing process, and therefore the traditional Chinese medicine particles at the bottom end are driven to move when blockage occurs; therefore, the bottom traditional Chinese medicine particle density is changed, and blockage is avoided.

The application discloses a 3D-printed implant with arc-shaped pipelines and a preparation method thereof, which is used for being implanted into an alveolar bone implantation nest of a patient, and the implant comprises a dense core body and a bone bonding part wrapped outside the dense core body; the bone bonding part comprises a first porous part and a second porous part; the first porous part is connected with the top surface of the second porous part; a plurality of arc-shaped pipelines are arranged in the first porous part; the arc-shaped pipelines are provided with openings at two ends and are communicated with the outside through the openings; the arc-shaped pipelines are extended into a cleaning part through the openings to clean the interiors of the arc-shaped pipelines. The interiors of the arc-shaped pipelines can load drugs (such as BMP-2, VEGF, PDGF and the like) to induce the rapid growth of bone tissues. The implant has the characteristics of good strength, matched elastic modulus of the bone bonding part and the patient and easy cleaning. The implant has a wide indication and is suitable for various edentulous patients, especially for the cases of insufficient alveolar bone mass or bone density.

The utility model relates to the technical field of PM2.5 sensors, in particular to a PM2.5 sensor calibration device which comprises a measuring cylinder, a ventilation head is fixedly connected to the side end of the measuring cylinder, a pressurizing piece is slidably connected to the middle of the measuring cylinder, a detection cavity is formed between the measuring cylinder and the pressurizing piece, a standard sensor and a PM2.5 sensor are arranged on the two sides of the ventilation head respectively, and the standard sensor and the PM2.5 sensor are connected with the measuring cylinder. The standard sensor is fixedly connected with the inner wall of the measuring cylinder, a mounting block is inserted into the side end of the measuring cylinder, the PM2.5 sensor is fixedly connected with the mounting block, an air vent is formed in the middle of the pressurizing piece, a sealing ball is arranged in the middle of the air vent, and limiting fixing mechanisms are annularly arranged at the side end of the sealing ball. The limiting fixing mechanism is composed of a deformation piece, a connecting plate, a guide plate, a limiting ball, a stop block and an extrusion column, the side end of the sealing ball is provided with the extrusion plate, the middle of the extrusion plate is connected with a connecting piece in a sliding mode, PM2.5 sensors produced in batches can be detected and calibrated, and the yield of the produced PM2.5 sensors is ensured.

The present invention relates to the field of humidification technology, and specifically to a high-pressure micro-mist industrial humidification equipment, wherein a high-pressure water pump is fixedly connected inside the water storage tank, a water pump pipe is fixedly connected to the output end of the high-pressure water pump, a first connecting pipe is rotatably connected to the top of the water pump pipe, two rotating nozzles are fixedly connected to the outer side of the first connecting pipe, both of which are provided with spray holes on the outer sides of the two rotating nozzles, and the spray holes of the two rotating nozzles are in opposite directions, a medicine injection tray is fixedly connected to the top of the medicine injection tray, a mixing pipe is fixedly connected to the top of the mixing pipe, and a liquid separation pipe is fixedly connected to the top of the mixing pipe, so that water and medicine are stored separately and mixed during spraying, thereby ensuring the stability and uniformity of the spray effect, and also avoiding problems such as corrosion of the water tank by the medicine. In addition, the structural design of the equipment makes maintenance and replacement of medicines simple and convenient, which greatly improves work efficiency.