Vibrating Feeder

Vibrating feeder is a core material conveying and feeding equipment in industrial production. It utilizes vibration principles to uniformly, continuously, and stably deliver lump, granular, and powdery materials to downstream equipment such as crushers, conveyors, and screening machines. It is widely used in industries including mining, chemical, building materials, metallurgy, coal, and electric power.

Working Principle

The core of a vibrating feeder is to drive the trough to vibrate via a vibration source, causing materials to move along the trough in parabolic or sliding motion, thereby achieving continuous feeding. Common vibration driving methods are classified into three types:

1. Electromagnetic vibration type: Utilizes the electromagnetic attraction force of an electromagnetic coil and the restoring force of springs to drive the trough into high-frequency, small-amplitude vibration (frequency approx. 50Hz, amplitude 0.5–1.5mm). Suitable for fine-particle and powdery materials (e.g., chemical powders, flour, cement), offering high feeding accuracy and low noise.

2. Eccentric block vibration type (motor-driven): An asynchronous motor drives eccentric blocks at both ends to rotate, generating directional inertial force that causes the trough to vibrate at low frequency and large amplitude (frequency 10–25Hz, amplitude 2–8mm). Suitable for lump and coarse-particle materials (e.g., ores, crushed stone, coal), featuring strong conveying capacity and impact resistance.

3. Hydraulic/pneumatic vibration type: Powered by a hydraulic pump or air pump, allowing flexible adjustment of vibration parameters. Suitable for special operating conditions such as high temperature, high pressure, and explosion-proof environments (e.g., flammable and explosive chemical environments, high-temperature metallurgical material conveying).

Key Advantages

- Uniform and stable feeding: By adjusting vibration parameters, the feeding rate can be precisely controlled (adjustment range 10%–99.99999%), preventing downstream equipment from overloading or underfeeding.

- Strong adaptability: Capable of conveying lump, granular, and powdery materials, as well as materials with high temperature, moisture, or moderate adhesion (anti-sticking trough designs available upon request).

- Simple and durable structure: No complex transmission components, few wearing parts (mainly trough liners and springs), low maintenance costs, and long service life (typically 8–10 years).

- Low energy consumption: Compared with screw feeders and belt feeders, energy consumption per unit conveying capacity is 30%–50% lower, making it particularly suitable for continuous long-term operation.

- Anti-blocking design: Vibration action prevents material accumulation and blockage inside the trough, especially suitable for materials prone to adhesion (e.g., wet coal, clay).

Application Scenarios

- Mining industry: Supporting feeding for crushers and ball mills (e.g., limestone and granite crushing production lines, feed particle size ≤120mm, conveying capacity 10–1000t/h).

- Chemical industry: Quantitative feeding of fertilizers, pesticides, and chemical powders (e.g., urea granules, lime powder, with enclosed structure for dust prevention).

- Building materials industry: Conveying of cement, sand and gravel, and tile raw materials (e.g., cement clinker feeding in cement production lines, with high-temperature resistant design).

- Metallurgical industry: Conveying of iron ore and steel slag (high-temperature conditions, trough made of heat-resistant steel).

- Coal industry: Feeding of raw coal and pulverized coal (e.g., raw coal conveying in thermal power plants, with explosion-proof design).

- Grain industry: Quantitative feeding of wheat, corn, and soybeans (using food-grade stainless steel trough, corrosion-resistant).