Using the particle swarm algorithm to support the vector regression model for global optimization, the parameters of the double-deck variable screen surface vibrating screen further optimized to ...
The geometric model of rotary vibrating screen is mainly composed of a screen box and two screen surfaces with different sieve sizes. ... In experiments and DEM simulations, the operational parameters are set as follows: 2 mm circular displacements, 23 Hz oscillatory frequency (1400 r/min) and 0.2° oscillatory amplitude is adopted in ...
Aiming at the structural reliability and operation stability of the vibrating screen, this study takes the 2460 double-layer circular vibrating screen as the …
The traditional dynamic models of vibrating screen are low-DOF models and can be classified into four types, among which, the 1-, 2-, 3-DOF models are established on a 2D plane for designing a vibrating screen while the spatial 3-DOF model is mainly …
According to the model of the circular vibrating screen and the related parameters, the values of the parameters are shown in Table 1. Table 1 Parameters of 2YA1548 circular vibrating screen [5] ... screen with ADAMS.The threedimensional model of circular vibrating screen was kept as - Parasolid (*.x_t) format,and then integrated into …
Comparison of flip-flow screen and circular vibrating screen vibratory sieving processes for sticky fine particles ... researchers have carried out numerous studies on the dynamics, structural design, and parameter optimization of FFSs through theoretical analysis, numerical simulation, and experiments (Zhang et al., 2016, Li et al., 2021a ...
A mathematical description of the dynamic screen model was derived, and parameters of this model were estimated based on experimental data from a semi-industrial vibrating screen. The investigated screen included a single mechanical exciter with unbalanced masses, generating a circular vibration trajectory and operating with …
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 ...
The result of this study showed the dynamic response of screen surface under impact, revealed the relationship between vibration parameters and evaluation indexes, and provided an adjustment ...
The excitation force is circular, and the vibrating screen structure is supported by symmetrical damping springs with equal stiffness. Liu et al. developed a linear model with three degrees of freedom in 3D that has an excitation force in the vertical direction and different damping spring stiffnesses in each support position. Their study ...
2 The Establishment of Finite Element Model The linear vibrating screen of this model is mainly composed of screen box, exciter, ... The main parameters of the vibrating screen are: ... Han XM. Dynamic response finite element analysis of circular vibrating screen box. Constr Mach. 2008;29(11):63–5. 6. SuM,TongX,LiuQ,ZhangKD,WangGF ...
The results show that the inherent and operating condition parameters of the large vibrating screen can be obtained from the scale-down model conveniently, which provides an effective method for ...
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 …
The scholar not only proved the accuracy of the model through experiments, but also studied the influence of structural parameters and damping parameters on the dynamics of the vibrating screen. Zhou, Zhang, Wang, and Mao (2020) and Gong, Wang, and Oberst (2018) used a disc spring system and a nonlinear spring model, …
The vibrating screen is a kind of mine classification machine for ore, mine, sand, gravel, coal, slurry, etc. which consists of a screen and a vibrator. Generally below 50 mesh for the coarse screen, and 80 mesh for the fine screen. The vibrator is an eccentric wheel that rotates under the motor's drive, making the sieve frame vibrate.
The mass of side plate of the vibrating screen was taken as object function, mode frequencies were regarded as state parameters, size of the plate was used as the …
A specially designed laboratory scale circularly vibrating screen was constructed, allowing the observation of the motion of particles during the screening process and precise control of the parameters of vibration. Fig. 1 shows a photo of the laboratory-scale screen model used in the experiment and schematics of the model used in DEM ...
screen model was derived, and parameters of this model were estimated based on experimental data from a semi-industrial vibrating screen. The investigated screen included a single mechani-cal exciter with unbalanced masses, generating a circular vibration trajectory and operating with over-resonant frequency close to 19 Hz.
The vibration intensity of the screen is a key parameter affecting the screen performance which can be characterised by the vibration frequency f (cycles per second), the amplitude A (mm) and the inclination angle of the screen deck α (degree). The vibration intensity of a circularly vibrating screen is defined by the vibration g-force, Γ: (1) Γ = A 2 …
The model of ultra-heavy vibrating screen has been established by using finite element analysis software ANSYS, the stress distribution of the screen box has been revealed under static load ...
With the traditional dynamic model for kinetic analysis process of a vibrating screen established, the external input excitation parameters (i.e., the excitation frequency and amplitude) screen and its physical properties (i.e., the screen size, the vibration mass and the vibration isolation system parameters) can be input into the dynamic ...
The VFFS is developed from the traditional circular vibrating screen. For the CVS, the drive of the exciter causes the screen frame to vibrate periodically. However, the VFFS contains two vibrating frames, the main screen frame and the floating screen frame, which provide two vibrations by a single drive of the exciter.
Flip-flow screens are increasingly used in the processing of fine wet coal. In this work, the vibration characteristics of an industrial-scale flip-flow screen with crank-link structure (FFSCLS) were investigated theoretically and experimentally. An improved kinematic model of FFSCLS was proposed and experiments are carried out to verify the …
The results show that the inherent and operating condition parameters of the large vibrating screen can be obtained from the scale-down model conveniently, which provides an effective method for ...
The circular vibrating screen was also analysed ... of the simulation model is determined using the method described by Dong et al. [32], [34]: a 1/6th scaled-down model to a real elliptical vibrating screen is used; in ... The contact opportunity is the collision times between the particles and screen surface. If the parameters are …
In improving dewatering performance, Dong et al. 1,2 developed a vibrating-dewatering screen with a unique structure that uses side plate beam excitation. Shi 3 studied the high-frequency coal slime …
In this study, a 2D linear model with three degrees of freedom that considers ore inertia and the ore force over the screen calculated using discrete element method is developed in …
In this paper, the dynamic and kinematic analysis method is used to establish the three-dimensional model of the 2YAH1548 type circular vibrating screen of the 7.2m2, and …
Three-dimensional model of 2460 double-layer circular vibrating screen: 1 – baffle; 2 – side plate; 3 – spring; 4 – motor; 5 – motor support; 6 – belt; 7 – vibration exciter; 8 ...
The particle motion on the screen-deck and the effects of various vibration parameters on screening performance are studied by conducting a series of numerical simulations. These studies present a better understanding of the circularly vibrating screen helpful for the optimal design of a vibrating screen process. 2. Mathematical …