Bucket elevator conveyor is a vertical conveying equipment that adopts a plate chain structure and gravity-induced unloading principle. It can vertically convey various bulk, granular and block materials, including but not limited to grains, feed, coal and ore. The lifting height of the bucket elevator can reach 80 meters, the commonly used height is generally less than 40 meters, and the conveying capacity can reach 1,600 cubic meters per hour.

Type: Belt/Chain
Suitable Material Size: 25-70mm
Lifting capacity: 5.4-142 tons/hour
Lifting height: ≤40 meters
Lifting speed: 1.4-2 m/s
Material: carbon steel, stainless steel
Application: It is used in biomass power plants, wood pellet plants, sawmills and other industries to transport wood chips, wood chips and other materials.

Working principle

The working principle of the bucket elevator conveyor is based on the rotation of the motor-driven reducer and sprocket, which in turn drives the chain and bucket to move continuously. When the bucket moves to the top of the elevator, it is smoothly lifted to the discharge port through the rolling support of the drum, and the material is dumped out of the bucket. Subsequently, during the descent, the bucket tilts due to gravity, allowing the material to naturally flow into the bucket, achieving smooth and continuous transportation.

Structures

Structure: Bucket elevator is mainly composed of running parts, traction parts (conveyor chain), driving device, upper device, middle casing, lower device, feeding port (inlet) and discharging port (outlet).

bucket elevator

Buckets:
Function: The primary components responsible for carrying materials.
Design: Available in various shapes and sizes, often made of metal or plastic, depending on the application.

Casing (Enclosure):
Function: Encases the elevator, providing structural integrity and protection.
Design: Typically made of steel, it can be square, rectangular, or circular in cross-section.

Belts or Chains:
Function: Provide the mechanism for lifting buckets.
Design: Belts are usually made of rubber or plastic, while chains are made of metal. The choice depends on the type of materials being transported and the operating conditions.

Head Section:
Function: Houses the drive mechanism and supports the bucket’s discharge.
Design: Contains the drive pulley or sprocket, motor, and other drive components.

Boot Section:
Function: Contains the initial loading point where materials are fed into the elevator.
Design: Includes the tail pulley or sprocket and the tensioning device to ensure proper belt or chain tension.

Intermediate Sections:
Function: Provide the vertical structure between the head and boot sections.
Design: Can be of varying lengths to accommodate different lifting heights.

Design Variations:
Centrifugal Discharge Elevators:

Description: Buckets are spaced widely and operate at high speeds. Materials are ejected using centrifugal force.
Applications: Suitable for free-flowing, non-fragile materials like grains and seeds.

Continuous Discharge Elevators:
Description: Buckets are spaced closely and operate at low speeds. Materials are discharged by gravity.
Applications: Ideal for fragile materials or those prone to degradation, like sand or chemicals.

Positive Discharge Elevators:
Description: Buckets are rigidly mounted on two strands of chain, and discharge is assisted by mechanical means.
Applications: Used for sticky or difficult-to-handle materials.

Materials Used:
Buckets: Metal (steel, stainless steel) or plastic (polyethylene, polyurethane).
Casing: Typically steel, can be stainless steel for corrosive environments.
Belts: Rubber or PVC.
Chains: Hardened steel.

Features

  1. Large conveying capacity, stable and reliable operation, using advanced design principles and processing methods, the trouble-free time can exceed 20,000 hours, the conveying capacity is 10-830m3/h, and the lifting height can reach 50m.
  2. The whole machine casing is divided into single and double-channel structures. The constant force of the weight box inside the machine can be automatically tensioned. The sprocket is a replaceable wheel rim combined structure, which is easy to replace, long service life,
  3. Suitable for loose density less than 1.5t/m³, easy to take out powder, granular, small block low abrasive materials. The conveying material temperature does not exceed 250℃: good sealing and less environmental pollution.
bucket elevator conveyor

Application

  • Chemicals: resins, coatings, pigments, rubber, carbon black, activated carbon, solvents, glue, sodium sulfate, polyethylene powder, quartz sand, etc.
  • Pharmaceuticals: Chinese medicine powder, Western medicine powder, pharmaceutical raw material powder, etc.
  • Foods: sugar, salt, monosodium glutamate, starch, milk powder, soy milk, juice, rice flour, dehydrated vegetables, juice, yeast liquid, pineapple juice, fish meal, food additives, etc.
  • Kiln industry: glass, ceramics, porcelain mud, grinding materials, refractory bricks, kaolin quicklime, mica, alumina, calcium carbonate (heavy), etc.
  • Metallurgy: lead powder, zinc oxide, titanium oxide, foundry sand, diamond powder, aluminum powder, iron powder, various metal powders, etc.

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