7results about How to "Avoid overcrowding" patented technology

The application discloses an extrusion device, a 3D printer and a method for using the extrusion device. The extrusion device can include a housing, a material channel, a discharge port in communication with the material channel, a push port in communication with the material channel, and a plurality of feeding ports in communication with the material channel. Along the length direction of the material channel, the discharge port is located at one end of the material channel, the push port is located at the other end of the material channel, and each feeding port is located between the discharge port and the push port. The extrusion assembly is slidably connected with the housing, so as to be capable of moving in the material channel from the side where the push port is located towards the discharge port, thereby pushing the material in the material channel out of the discharge port and blocking each feeding port. This design solves the problem of mixing of two materials when switching materials.

The present application belongs to the field of agricultural engineering and particle discrete element modeling technology, and particularly discloses a wheat chaff multi-sphere discrete element model construction method based on parameterized surface. The method comprises the following steps: S1: performing macroscopic size measurement on chaff samples of multiple wheat varieties; S2: establishing a parameterized surface expression form according to geometric rules; S3: substituting corresponding scale parameters and surface morphology parameters into the parameterized surface expression form; S4: obtaining a candidate multi-sphere geometric model corresponding to candidate constituent sphere diameters; S5: determining a target multi-sphere geometric model; S6: obtaining discrete element contact mechanics parameters of the wheat chaff; and S7: importing the target multi-sphere geometric model and the discrete element contact mechanics parameters into a discrete element software to obtain a wheat chaff multi-sphere discrete element model. The present application determines sphere center coordinates through a parameterized surface, can reduce the influence of empirical ball arrangement on model results, and can reduce the number of constituent spheres under the condition of meeting the requirements of shape and inertia error.

This invention belongs to the field of peroxide production technology, specifically relating to a continuous production apparatus and method for lauroyl peroxide. The continuous production apparatus for lauroyl peroxide includes a primary reactor, to which a secondary reactor, a tertiary reactor, and a filter tank are sequentially connected. Each of the primary, secondary, and tertiary reactors is equipped with a stirrer, with a spiral plate threaded onto its upper part. A motor is connected to the top of the stirrer. A conveyor belt is installed inside the filter tank, and a mother liquor outlet is located in the center of the bottom plate. The bottom plates on both sides of the mother liquor outlet are inclined. A primary washing tank, a secondary washing tank, and a tertiary washing tank are sequentially connected to the filter tank. Each of the primary, secondary, and tertiary washing tanks is equipped with a filter screen and a sprayer. This invention employs a multi-reactor series continuous production process, resulting in higher production efficiency and more stable operation.

This invention belongs to the field of communication technology and discloses a federated learning method based on partial client participation and power constraints. The method includes: employing biased client selection, setting client addressability and continuously reporting to a central server, allowing the central server to understand the state of each client during iteration; and allocating power across communication time slots by adding a total power constraint, enabling devices to transmit their local updates to the server. This invention addresses the problems of existing technologies by reducing communication costs while maintaining model convergence performance. The proposed design can mitigate the negative impacts caused by imperfect channel conditions. Convergence of the learning process is slowed by power control, while biased client selection accelerates convergence, balancing model aggregation. This invention can guarantee fast convergence under harsh wireless conditions with low signal-to-noise ratios, and is cost-effective in terms of time and energy savings in wireless FL systems.

The utility model relates to the technical field of wire harness sheaths, in particular to a compression-resistant automobile wire harness sheath with an inner support assembly, which is reasonable in structural design, an inner support joint and an inner support spring jointly form the inner support assembly, and the inner support spring can improve the compression strength of a corrugated pipe type sheath body, so that the service life of the corrugated pipe type sheath body can be prolonged, and the service life of the corrugated pipe type sheath body can be prolonged. The inner supporting connector is composed of a connector base, a wire penetrating disc and a locking screw rod, a lug of the wire penetrating disc is clamped into an annular rotating groove through a heat dissipation lug groove and then rotates by 90 degrees, the positions of the wire penetrating disc and the connector base can be locked through the locking screw rod, when a plurality of automobile wire harnesses are arranged in a penetrating mode through the wire penetrating disc, the arrangement of the wire harnesses can be tidied, the situation that the wire harnesses are disordered and crowded is avoided, and the service life of the wire harnesses is prolonged. The heat dissipation lug grooves are communicated with the inner cavity of the corrugated pipe type sheath body after the lugs rotate and are staggered, heat dissipation is facilitated, the heat dissipation effect can be further improved by matching with an external ventilation system, and safe operation of a line is guaranteed.

The application relates to the technical field of civil engineering bridge structure optimization, in particular to a steel pipe concrete arch rib parameter design method and system based on multi-objective optimization. The method comprises the following steps: based on preliminary design data of a steel pipe concrete bridge obtained in advance, a plurality of optimization variables and a plurality of objective functions are determined; according to the value range of the optimization variables, a chaotic mapping is used to generate an initial population with uniform distribution; the initial population is divided into regions by using the objective functions, and the number of individuals in each sub-region is obtained based on the results of the region division; and based on the number of individuals in each sub-region, a multi-objective optimization algorithm is used for iteration to obtain the optimization parameters of the steel pipe concrete arch rib. The method solves the problems that the steel pipe concrete arch rib parameters are inefficient and the optimization results are not accurate in the prior art, and the efficiency and accuracy of the steel pipe concrete arch rib parameter design are greatly improved by improving the multi-objective optimization algorithm, using scientific space division and an efficient search strategy.

The invention provides a metal cluster containing bound positive and negative ion pairs, a preparation method of the metal cluster, a high-dispersion metal catalyst and a preparation method and application of the high-dispersion metal catalyst. The preparation method of the metal cluster containing bound positive and negative ion pairs comprises the following steps: dissolving a metal compound in a mixed solution containing water, alcohols and a ligand, and mixing to obtain a metal precursor solution; and sequentially adding a protective agent and a reducing agent into the metal precursor solution, and mixing to obtain a solution of metal clusters containing bound positive and negative ion pairs. The high-dispersion metal catalyst provided by the invention can be directly prepared by dipping carrier particles into a metal cluster solution protected by bound positive and negative ion pairs; by dynamically loading bound positive and negative ion pairs on the metal surface, excessive metal aggregation in the catalyst preparation process can be prevented, so that the effect of controlling the metal dispersity is achieved, and the technical route of implementing bound positive and negative ion pair protection and cluster soft landing on metal clusters is realized.