A slack conveyor is a type of conveyor system that utilizes a slack strand or loop of chain or belt to transport materials. This slack strand allows the conveyor to handle uneven loads and varying material flow rates, making it suitable for applications involving loose materials like sand, gravel, or aggregates.
Here's how a slack conveyor works:
- Slack Strand: The slack strand is a loop of chain or belt that runs along the bottom of the conveyor. It's longer than the distance between the head and tail pulleys, creating a sag or slack.
- Material Flow: As material is loaded onto the conveyor, the slack strand stretches and accommodates the weight. The slack strand then returns to its original position as the material is discharged at the end.
- Advantages:
- Flexibility: Slack conveyors can handle varying material flow rates and uneven loads.
- Durability: The slack strand absorbs shock and impact, reducing wear and tear on the conveyor system.
- Low Maintenance: The simple design requires minimal maintenance.
Practical Insights:
- Applications: Slack conveyors are commonly used in mining, quarrying, and construction industries for transporting bulk materials.
- Types: There are different types of slack conveyors, including chain slack conveyors and belt slack conveyors.
- Design Considerations: The length of the slack strand, the type of chain or belt, and the speed of the conveyor are crucial design considerations.
Examples:
- Sand and Gravel Handling: Slack conveyors are ideal for transporting sand and gravel from a stockpile to a processing plant.
- Aggregate Loading: They can efficiently load aggregates into trucks or hoppers.
