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The vibrating screen is a kind of sieving equipment of international advanced level, developed by our…
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Sofol VSI Series vertical shaft impact crusher is designed by reputed German expert of Sofol and every…
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The simulation analysis found that, during the vibration screening process, with the increase of the frequency of motor excitation, the screening accuracy of each screen layers increased first and ...
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The vibration induced fatigue failure of small-bore piping is one of the common causes of failure trouble at nuclear power plants. This failure used to be prevented by calculating and screening vibration induced stresses using the accelerations measured by portable vibrometers, which are easy to handle in the working areas. Though the …
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Equal-thick screening refers to a method of screening, in which the thickness of materials along the entire screen surface remained constant and screening efficiency is high [].As a result of high screening efficiency, large throughput and many other advantages, iso-thickness screen (banana screen ) is widely used in many areas, …
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Commonly used piping vibration screening limits are typically justified by experience and lack a well-documented technical basis. This paper presents technical background for future Level 1 Fitness-for-Service (FFS) vibration screening criteria. The criteria assess the risk of fatigue in process piping due to bending mode type …
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The screening of particles with different vibration modes was simulated by means of a 3D discrete element method (3D-DEM). The motion and penetration of the particles on the screen deck were ...
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In this paper, the Discrete Element Method (DEM), Finite Element Method (FEM), and Multi-Body Dynamics (MBD) were integrated to establish a numerical coupling model for vibrating flip-flow screens, …
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In this paper, the effects of vibration parameters of a banana screen, i.e. frequency, amplitude and vibration direction angle, on the screening efficiency per unit time were studied using the ...
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The simulation model of dewatering screening process is established by the method of computational fluid dynamics (CFD) and discrete element method (DEM). Subsequently, the screening efficiency …
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Recently, some novel screens were proposed based on the improved understanding of screening processes from particle-scale studies, one of which is the novel variable amplitude equal thickness vibration screen (VAETVS). This paper presents an investigation of using different aperture sizes to further …
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In this work, the dynamic characteristics and screening performance of the disc spring vibration screen are studied. The modal simulation and experimental results …
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Screening operation is widely applied in metal metallurgy, mining, chemical industry, food processing, and public hazard treatment. 1–3 Vibration screen is a type of engineering machinery that completes the screening process and improves the screening efficiency. 4,5 With the reciprocating vibration of the screen mesh, the processes of …
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Finally, a numerical model for ambient vibration isolation is built under the conditions of plane strain, and the responses are performed both in frequency domain and in time domain by finite element method. The screening effectiveness of the proposed wave barrier is studied by conducting an extensive dimensionless parameter investigation.
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Testing of protective sensation and vibration perception are two of the most commonly used non-invasive methods of screening for diabetes-related peripheral neuropathy (DPN). However, there is limited research investigating the reliability of these tests in people with diabetes. The aim of this study was to determine the inter- and intra …
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DOI: 10.1016/J.IJMST.2013.01.014 Corpus ID: 109392511; Influence of vibration mode on the screening process @article{Dong2013InfluenceOV, title={Influence of vibration mode on the screening process}, author={Hailin Dong and Chusheng Liu and Yuemin Zhao and Lala Zhao}, journal={International journal of mining science and technology}, …
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Vibrating flip-flow screens are widely employed in the deep screening processes of coal washing, solid waste treatment, metallurgy, and other fields, playing a crucial role in enhancing product quality and production efficiency. The screen surface and material movement of vibrating flip-flow screens are highly complex, and there is …
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Here, a 6 mm aperture size was used in the cases on the effect of vibration parameters on the screening performance of VAETVS, the sieve plate thickness is 1 mm, and the inclination of the screen surface is 10°. Consequently, 6.28 mm is the theoretical lower limit of the aperture size to ensure small particles (<6 mm) can pass through the ...
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Screening is a technique that is extensively adopted for the separation of discrete materials according to particle characteristics such as size and shape. Wide application of the discrete element method has sparked much research on the vibrating screen, which is a screening apparatus having a specific vibration mode.
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This study evaluates four standard simple screening maneuvers appropriate for the diabetes clinic (i.e., 10-g Semmes-Weinstein monofilament examination[SWME], superficial pain, vibration testing by …
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The aim of this work is to construct a novel BNN model to study the vibration screening kinetic of mixture materials, and further propose a method to determine the relationship between the BNN model coefficients and the structure and operation …
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The user of a vibration guideline is likely to be attracted to a screening method that is easy to use and interpret. Basing a guideline on single numbers at predefined test points makes it easy to ... When we started to assess overall vibration methods in preparation for writing Reference 1, it was assumed that the task would be simple. In fact ...
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Fernandez et al. (2011) simulated vibration screening in a banana-screen sieve in a solid–liquid separation, with the solid phase being modeled by the discrete element method (DEM) and the slurry (liquid plus fine material) by the smoothed particle hydrodynamics (SPH) method.
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A numerical study of the motion particulates follow along a circularly vibrating screen deck was done using the three dimensional Discrete Element Method (DEM). The motion of the particles was analyzed. The effects of vibration amplitude, throwing index, and screen deck inclination angle on the screening process are discussed.
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Vibration testing is necessary for functionality and durability evaluations of equipment that may undergo performance degradation due to operational vibrations. Here, we propose a planning method for the vibration testing of equipment with high slenderness ratios, such as missiles, and excitation, support, and measurement locations are …
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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 …
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The discrete element method was utilized to construct three-dimensional discrete element models for the rice mixture, and their motions were analyzed numerically on a planar vibration screening device. The results showed that, after falling onto the vibrating screen surface, the mixture undergoes a reciprocating motion within the same …
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1. Introduction. Screening is an old and simple separation operation, from boxes with manual operation up to those operating at industrial flow rates, where there is …
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As shown in Fig. 2, a trench of depth d and width w is located at a distance l from a rigid surface footing subjected to a vertical time-harmonic load. Since vibration isolation by a trench is primarily achieved by screening the surface (Rayleigh) waves, the trench depth, embedded length, width, and distance of the trench are normalized with …
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The screening of particles with different vibration modes was simulated by means of a 3D discrete element method (3D-DEM). The motion and penetration of the particles on the screen deck were analyzed for linear, circular and elliptical vibration of the screen. ... The screening processes for each vibration mode are shown in Fig. 3 and …
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The screening efficiencies of CVSs and VFFSs are 92.54% and 92.19%, respectively, at an external moisture content of 4.30%, so the screening effect of a low-vibration-intensity screen surface is ...
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The critical part of the multi-level screening machine is the vibration mechanism and the input shaft and connecting rod of this mechanism for the given system power have been designed and analysis using Ansys work bench 16.0 has been done to prove the part safety. Keyword : -Sand screening, Vibration mechanism, Input shaft, Connecting rod 1.
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The decks of most vibratory screeners vibrate in a vertical circle, as shown above. However, other methods of vibration are more effective for certain materials. Vibration is created either mechanically for coarse …
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In order to obtain material mass load characteristics of a crank-link type flip-flow screen in the screening process, a vibration-test-based method is proposed. A …
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