I. Vibrator Exciter Design

The feeder vibrator exciter uses a precision design with gear meshing of two eccentric shafts, consisting of two eccentric shafts positioned at a certain angle and precisely meshed through gears. During assembly, the gears are strictly positioned according to marks to ensure synchronous opposite rotation of the eccentric shafts, forming a stable and reliable excitation system.

II. Exciting Force Generation Mechanism

Power Transmission The motor transmits power through the transmission system to the vibrator exciter; the two eccentric shafts perform precise synchronous rotation through gear meshing.

Synthesis of Exciting Force When the eccentric shafts rotate, each generates a periodic centrifugal force. In the horizontal direction, the eccentric forces mutually compensate, while in the vertical direction they add up, forming a large resultant linear exciting force that causes the housing to vibrate forcibly.

III. Vibrational Movement of the Housing

The housing is elastically mounted on support springs, which provide elastic restoring force and damping, isolating vibration. Under the action of the exciting force, the housing performs forced linear vibration on the support springs with a uniform stable amplitude (usually 3-8 mm).

IV. Material Movement Mechanism

1. Source of Vibrational Energy

Using the forced vibration of the housing as an energy source, the material performs two forms of movement in the trough:

Sliding Movement The material slides relatively over the surface of the trough, and frictional force pushes the material forward.

Throwing Movement With sufficient vibrational acceleration, the material lifts off from the trough, performs parabolic motion in the air, and moves forward upon landing.

2. Continuous Advancement

Sliding and throwing alternate; with each vibration, the material moves forward a small distance. High-frequency vibration ensures continuous and uniform forward movement of the material.

V. Implementation of Pre-Screening Function

1. Rod Design

The bottom of the trough is equipped   with parallel rods spaced according to the required screening size (usually 50-150 mm).

2. Screening Process

Passage of Fine Fraction The material is fully loosened during vibration; the fine fraction smaller than the gap between rods passes through the gaps downward, directly entering the lower-level transport system, bypassing the subsequent crushing stage.

Continuation of Coarse Fraction Transport The coarse fraction larger than the gap remains in the trough, continuing to move toward the discharge end, entering the subsequent crushing equipment.

3. Dual Effect

The feeder achieves integration of screening and feeding The screening function preliminarily separates the fine fraction, optimizing the crushing system load; the feeding function continuously and evenly supplies material to the crusher; system optimization reduces over-crushing, improving overall efficiency by 15-30%.