Vibrating Feeder

Vibrating Feeder Used In Stone Processing Line

Vibrating Feeder is a kind of linear-direction feeding equipment, in the mineral ore &rocks processing plants, it can send materials to crusher evenly and continuously. At the same time, it can screen materials roughly, increasing the practical handling capacity of the whole stone processing line. Service online

Detailed introduction

Technical features and advantages

  • 1. Stable performance &Reliable operation;
  • 2. Easy to adjust &Easy to maintain;
  • 3. Long span life &No pollution with closed body;
  • 4. Good performance-conditioning, it can be used in any severe environments.

Working principles and applications

SBM vibrating feeder can be used in these areas such as metallurgical industry, coal mining industry, mining-selection, building, chemical and grinding industry etc.

Technical data

Model Trough Size(mm) Max Feeding (mm) Capacity (t/h) REV (r/min) Power (kw) Motor Model Machine Size(mm)
ZSW 180x80 1800×800 300 30-80 970 6-1.5×2   2200×1100×800
ZSW 200x120 2000×1200 300 80-500 970 6-2.2×2   2000×1200×855
ZSW 300X85 3000×900 300 40-100 970 6-2.2×2   3050×1430×1550
ZSW 380X96 3800×960 500 90-200 710 6-11 Y160L-6/11 3880×2240×1880
ZSW 420X110 4200×1100 580 150-350 710 6-15 Y180L-6/15 4300×2450×2010
ZSW 490X110 4900×1100 580 180-380 780 6-15 Y180L-6/15 4980×2450×2010
ZSW 490X130 4900×1300 750 250-450 780 6-22 Y200L2-6/22 4980×2710×2050
ZSW 600X150 6000×1500 800 600-1000 780 6-30 Y255M-6/30 6160×2919×2293

Selection of Working Parameters of Vibrating Feeder

The working parameters of vibrating feeder include vibration frequency, amplitude, vibration angle, installation angle and so on. Reasonable choice of working parameters is an important condition to ensure the normal operation of the machine, it not only to meet the needs of productsivity, but also take into account the machine can withstand the power load capacity and power consumption. In addition, the transport efficiency is often associated with the movement characteristics of the material are closely related. Therefore, in the choice of operating parameters must also consider the physical properties of materials and transport in the process of dynamic characteristics.

1. Mechanical index and throw index
Most vibrating feeders operate in near-resonance conditions, and the material is in continuous motion, and generally has a higher mechanical index. But taking into account the level of machine productsivity, the length of the transmission distance and the size of the vibration quality, to avoid the lack of rigidity and affect the normal delivery of materials. The mechanical index of the vibrating feeder is usually controlled at K = 3 to 5, and the throwing index is controlled at Kp = 1.4 to 2.5. When the brittle material is conveyed, it is necessary to reduce the amount of material to be excessively broken during the conveyance. It is advisable to use a smaller throwing index or to select a higher frequency and a smaller amplitude under a certain throwing index to reduce the material drop The relative impact speed of the body.M

2. Excitation angle and installation angle The angle of the angle of excitation is chosen according to the conveying speed, the groove wear and the requirement of the degree of material fragmentation. In theory, it is possible to determine the optimal shock from the maximum conveying speed by the mechanical index Angle of vibration. But in fact a lot of factors affecting the speed of delivery, to be a comprehensive analysis. Vibrating feeder generally take the excitation angle β = 25 ° ~ 35 °. The installation angle refers to the angle between the tank and the horizontal (installation angle), which affects the conveying speed of the material. When the tank is mounted downwards, the conveying speed is significantly improved. Such as α = - 10 °, the transmission speed can be increased by about 40%; α = - 15 ° can be increased by more than 75%. But the value of α should not be too large, because it not only exacerbates the material on the tank wear, but also by the material natural angle of repose. Generally not more than 10 ° ~ 15 °.

3. Frequency and amplitude
Vibrating feeder used in different ways, he adapted to the frequency and amplitude range is not the same. At the time of design, the mechanical index K is selected and the relationship between frequency and amplitude is calculated as follows: f = gk4π 2 "A or A = gk4π 2 f2 V = ηvπnp2 gA" K ctgβ It can be seen that when the mechanical index K and When the excitation angle β is constant, the conveying speed is proportional to the square root of the amplitude A. To increase the delivery speed, use a lower frequency and a larger amplitude. It should be noted, however, that the relative velocity of the material falling on the tank is inversely proportional to the frequency, so it is desirable to use a higher frequency and a smaller amplitude for reducing the relative impact velocity of the material (for fragile materials). For the eccentric block inertial vibrating feeder, due to the eccentric block mass and starting torque limit, the amplitude of 0.5 to 6, the corresponding frequency of 12 to 25 Hz, the frequency is too high often due to a large dynamic load bearing premature damage.

4. Conveying capacity
The conveying capacity of the vibrating feeder is determined by the groove width, the material layer thickness, the material bulk density and the actual average conveying speed.

Q = 3600BHγV where: Q- - - Production capacity KN / h. B - - - Slot width m. H - - - the thickness of the material at the discharge end m. (Generally take the height of the tank 0.6 ~ 0.8) γ - - - material bulk density KN / m3. V- - the actual delivery of the average speed m / s.

For different materials, the thickness of the material to be conveyed has a different limit, and if it exceeds its limit, the conveying speed will be greatly reduced. The relationship between the thickness of the material layer and the conveying speed is divided into three cases. Where I is the thin layer, in which the conveying speed increases rapidly with the thickening of the material layer and reaches the maximum value quickly. The zone 2 is of medium thickness, and the conveying speed depends mainly on the internal friction of the material, and the thickness of the material decreases slightly. Ⅲ area belongs to the thick material layer, in this area, the material due to the degree of ventilation to reduce the transport rate decreased significantly.

Vibrating Feeder Used In Stone Processing Line

Kinetic Parameters of Vibrating Feeder

The biaxial inertial exciter of the vibrating feeder can produce directional exciting force. Between the two shafts have a pair of gear ratio of 1 gear to pay to ensure that the direction of rotation in the opposite, the same speed. Since the eccentric mass and the eccentricity of the two axes are equal in magnitude, the generated inertial forces cancel each other in one direction and in the other direction are superimposed on each other to produce a directional exciting force which periodically changes, The rigid connection of the conveyor tank is also oriented for periodic vibration. When we study its dynamic characteristics, we neglect the influence of the inhomogeneity of the eccentric block on the vibration system parameters, and think that its rotation speed is constant. So that it can be its mechanical model as a system with a degree of freedom to study. Exciting force by harmonic changes, simplify the calculation process, but also close to the actual situation.


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