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In this study, a tea vibrating-shifting machine driven by an eccentric wheel-linkage was designed. The force and motion process of tea particles were theoretically analyzed, and the dynamic ...
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In this paper, the modal analysis and dynamic simulation of a large linear vibrating screen are carried out by using Abaqus, a large general finite element …
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The optimization method proves to be effective implementing on a linear vibrating screening. With SE equals to 98.5%, the SSL optimizable range is 39.2%. While compromising the SE to 88.7%, the ...
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The optimal mathematical model of linear vibrating screen is established by means of MATLAB optimization technology and the optimization method is proved to be consistent and reliable. This thesis aims at the maximal productivity per unit power for linear vibrating screen. By means of MATLAB optimization technology, the optimal …
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Screening techniques have been widely deployed in industrial production for the size-separation of granular materials such as coal. The elliptical vibrating screen has been regarded as an excellent screening apparatus in terms of its high screening efficiency and large processing capacity. However, its fundamental mechanisms and operational …
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Springs of vibrating screens are prone to fatigue induced failure because they operate in a heavy duty environment, with abrasive dust and under heavy cyclic loads. If a spring breaks, the stiffness at supporting positions changes, and therefore the amplitude of motion and the static and dynamic angular inclination of deck motion also change. This change in the …
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The dynamic response stability of the vibrating screen is an important factor affecting the screening effect and the structural performance of the vibrating screen. In this paper, to improve dynamic response stability and screening efficiency, we optimized the configuration of linear screening process parameters based on the co-optimization ...
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Spring failure is one of the critical causes of the structural damage and low screening efficiency of mining vibrating screens. Therefore, spring failure diagnosis is necessary to prompt maintenance for the safety and reliability of mining vibrating screens. In this paper, a spring failure diagnosis approach is developed. A finite element model of …
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The dynamic model of variable linear vibration screen is built based on the power balance theory, and the dynamics equation of any point on the vibration screen …
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The vibrating screen is one of the most extensively used screening tools. Vibrating screens, such as linear vibrating screen, circular vibrating screen or elliptical vibrating screen, have a simple translational motion. ... The equations of motion for any point on the vibrating screen are xD = 0.00035Dy sin t - (0.00368 + 0.00038Dy ) cos t …
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Aiming at the design defects of the existing structure of the linear vibrating screen, the finite element analysis model of the linear vibrating screen was established by Abaqus …
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In engineering, the linear motion vibrating machines are widely used, such as the linear vibrating screens, which are used for screening, grading, dewatering, and drying, etc. [].As shown in Fig. 1a, when the system is driven by only a single vibrator, the final motion trajectory of the MWRF is generally a circle due to the rotation of vibrator. . If …
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optimization scheme is proposed to design a portable linear vibrating screen containing a multi-layer screen. The structure is mainly composed of a sieve hopper, a screen frame, a column, a screening motor and a screen, and is fixed on the bottom plate. Fig. 1 shows the three-dimensional model of the vibrating screen.
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The helical gear pair of a box-type vibration exciter of a mine-used linear vibrating screen is subjected to complex excitation and prone to broken tooth failures. At present, investigation regarding the difference and particularity between gear transmission in vibrating screens (i.e., vibration machinery) and that in rotating machinery is still a …
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To strengthen the screening efficiency of traditional vibrating screens, a new type of vibrating screen, namely the composite vibrating screen, has been proposed based on the Lissajous vibration synthesis theory. The working principles of composite vibrating screens have been explained. Numerical simulations of the sieving processes …
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Kinematics parameters of the vibrating screen which motion traces were linear, circular or elliptical were obtained. The stable solutions of the dynamic equations gave the motions of the vibrating ...
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Introduction. Vibrating screen is widely used in the coal screening process because of its simple structure and high screening performance. 87% of the global energy consumption comes from fossil energy (Michal, Dominik, & Katarzyna, 2017) and vibrating screen accounts for 25%–33% of the total equipment number in a modern coal …
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Vibratory Screens come in a variety of sizes. They can range from 4' to 12' wide and 6' to 32' long. The width of the screen determines the carrying capacity of the screen deck, while the length of the screen determines the overall efficiency of the screen. Typically, the length of the screen is 2.5 to 3 times the size of the width.
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A new composite vibrating mode is presented in this paper. Modeling and dynamic analysis are studied according to two-degree-of-freedom systems theory. The effects of vibration parameters, including swing angle, swing frequency, vibrating direction angle, and translation frequency, on the screening efficiency were researched by means …
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Minerals Engineering. Volume 121, 1 June 2018, Pages 107 ... Dynamic response of the screen mesh is of great significance in the optimum vibrating screen design. In this paper, based on the DEM-FEM co-simulation method, the effect of screening parameters on the dynamic response of the screen mesh is explored and the mechanism …
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High-frequency vibrating screen is usually operated at an inclined angle 0°-25°, up to 45°, and the operating frequency range is 1500-7200r/m. 7. Grizzly Screen. Grizzly screen is often used for pre-screening before coarse and medium crushing of materials. The mesh size is generally >50mm, but sometimes <25mm.
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Unlike the traditional vibrating screens, the VFFS is a two-body vibration system, including two vibrating bodies, comprising the main screen frame and a floating screen frame. In this paper, a single-deck type of 0827 VFFS excited by an exciter was designed and produced, and a five-degree-of-freedom translational and rotational …
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A Linear Vibrating Banana Screen Using DEM 3D Simulation 349 where k t is the tangential stiffness; t is the tangential overlap; r vt is the tangential component of the relative velocity. Besides ...
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Dewatering vibration screen systems are widely used in industrial fields such as mining, metallurgy, construction and agriculture [].In mining, the process of separating particles of different sizes plays an important role because of its effect on sieving efficiency [].A number of studies on vibrating screen systems for separating different size of …
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This study provides a reference for the efficient operation and optimal design of large multi-layer screening equipment. ... Journal of Mechanical Engineering Science 2020; 234(13): 095440622090794 ... Wu XQ, Li ZF, Xia HH, et al. Vibration parameter optimization of a linear vibrating banana screen using DEM 3D simulation. Journal of ...
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1. Introduction. The vibrating screen is used for particle size sorting of granular materials, and its application is extremely wide. In addition to the mining and …
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Simulation of simplified the part structures of vibration screen by ANSYS software, and then establishes the finite element model of the linear vibration screen. Modal analysis …
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It is concluded that the linear dynamic model used in Case 2 is adequate to evaluate the influence of the ore on the movement of the vibrating screen. e linear dynamic model considering the force ...
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The study also provides a theoretical basis and engineering reference for the structural design of other vibrating screens. KeywordsVibrating screens·Modal analysis·Dynamic …
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Abstract. In this paper, we simulated the complex particle flow-behavior and screening efficiency on a linear vibrating screen using the Discrete Element Method …
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