9results about How to "Improve fill rate" patented technology

A belt retainer roller has a plurality of rollers and a retainer (2) that retains the rollers. The retainer (2) includes a pair of annular members (4) facing both axial ends of each roller, and a plurality of column portions (5) that are disposed at equal intervals in the circumferential direction across the outer diameter portions of the pair of annular members (4) for the rollers to be fitted into. An inner diameter portion of each annular member (4) is provided with a roller retaining claw (6) for preventing the rollers from falling toward the inner diameter side of the retainer. A retainer radial chamfer length (B) and a retainer wall thickness (A) satisfy the following relationship: 0 < B / A ≤ 1.6.

This invention discloses a method for preparing high-entropy ceramic matrix composites using a reactive infiltration process, belonging to the technical field of ceramic matrix composites. The steps are as follows: at least four single-component carbides are ball-milled and mixed with a carbon source, then dispersed in a dispersion liquid to obtain a slurry; continuous fibers are woven into a preform, and an interface layer and a matrix layer are deposited to obtain a semi-dense composite material; the slurry is introduced through vacuum or pressure impregnation; and a high-entropy carbide matrix is ​​generated in situ and densified by reactive infiltration after embedding with a transition metal and its alloy. This invention solves the problems of long process cycles, high porosity, high cost, and insufficient introduction of high-entropy ceramics in existing processes, achieving rapid densification and improving the material's high-temperature stability, oxidation resistance, and ablation resistance. It is suitable for the large-scale production of thermal protection materials for hypersonic vehicles.

The embodiment of the present application provides a solid buoyancy material and a preparation method and application thereof. The solid buoyancy material comprises an epoxy resin matrix and light fillers dispersed in the epoxy resin matrix; the light fillers comprise hollow glass microbeads A, hollow glass microbeads B and elastic organic expanded beads, and the particle size of the hollow glass microbeads A is greater than that of the hollow glass microbeads B. The solid buoyancy material has excellent waterproof property while having a relatively low density.

The application discloses a novel biogas slurry membrane filtration device based on silicon carbide membranes, comprising: a silicon carbide membrane assembly, which is composed of four groups of membrane groups in parallel connection, and two ends of each group of membrane groups are connected with a shunt pipe and a collection pipe; each group of membrane groups comprises four silicon carbide tubular membrane tubes, and the four silicon carbide tubular membrane tubes are connected in series, each silicon carbide tubular membrane tube is provided with a plurality of large through-hole structures along the axial direction thereof, the diameter of the large through-hole structure is 8 mm, and the pore size of the membrane tube is 150 nm; and a cleaning assembly connected with the silicon carbide membrane assembly and used for cleaning the silicon carbide membrane assembly according to a preset mode. The application has stronger anti-clogging performance, is suitable for anaerobic biogas slurry treatment with high solid content and more organic fiber components, effectively alleviates the problems of scaling and fiber winding and clogging, and solves the problem of membrane strength through the thickening design of the membrane tube spacing.

This application provides a method for dripping varnish onto a motor winding, comprising: placing the motor winding in a dripping process box; and dripping varnish onto the motor winding during a first time period t1, wherein the dripping is performed under negative pressure, or sequentially under negative pressure and positive pressure; during negative pressure dripping, the pressure inside the dripping process box is a negative pressure P1, which is less than 0.101 MPa; during positive pressure dripping, the pressure inside the dripping process box is a positive pressure P2, which is greater than or equal to 0.101 MPa. The negative pressure dripping step facilitates varnish penetration and reduces voids, while the positive pressure dripping further reduces varnish overflow and improves the filling rate.

This invention relates to the field of 3D layout technology, specifically to a center cube layout method based on an intelligent heuristic algorithm, comprising the following steps: S1, determining the size parameters of the space to be laid out, the number of objects to be laid out, and the size parameters of each object to be laid out, setting layout constraints and preset goals; S2, constructing a mathematical model of the center cube layout problem, defining the layout state, envelope box, center cube, available space, and envelope box fill rate; S3, designing an intelligent heuristic algorithm, which is designed according to the available space calculation strategy, the available space cube selection strategy, and the object placement strategy; S4, based on the intelligent heuristic algorithm designed in S3, combined with the parameters of S1 and the mathematical model of S2, solving the center cube layout, outputting a layout scheme that satisfies the layout constraints and preset goals, thereby improving the engineering feasibility of the layout scheme.

This application provides a common-mode inductor, a switching power supply, an inverter, and communication equipment. The common-mode inductor includes a U-shaped magnetic core, an enameled flat copper wire winding, and a fixing structure. The enameled flat copper wire winding is wound vertically on the U-shaped magnetic core. This vertical winding method allows the enameled flat copper wire to be wound perpendicular to the plane of the U-shaped magnetic core. This winding method can improve the filling rate of the winding, reduce the space occupied by the winding, and also help reduce eddy current losses and proximity effects at high frequencies, thus improving the high-frequency performance of the inductor. The enameled flat copper wire has good conductivity and insulation properties, which can meet the operating requirements of the inductor under high current and high voltage environments. The fixing structure is used to fix the U-shaped magnetic core and the enameled flat copper wire winding, ensuring the stability of the winding's position on the U-shaped magnetic core and preventing loosening or displacement of the winding during inductor operation, thereby ensuring the electrical performance and mechanical stability of the inductor.

This invention discloses a hollow metal tube filled with phase change cooling material for heated non-combustible cigarettes, and the heated non-combustible cigarette itself. The heating non-combustible cigarette includes a hollow metal tube and a phase change cooling material. The phase change cooling material is filled and sealed inside the hollow metal tube. The hollow metal tube filled with the phase change cooling material is placed inside the heated non-combustible cigarette in at least one of the following ways: winding, folding, gathering, or bending, to form a cooling unit. The cooling unit has a longitudinally extending smoke channel; the longitudinal direction of the cooling unit has a porosity of 40%-90%. The hollow metal tube filled with phase change cooling material cooling unit of this invention has the advantages of high latent heat of phase change, low thermal hysteresis effect, high heat absorption efficiency, apparent stability without collapse, and no leakage.