Conveyors Series: Redler or Drag Carrier

Pursuing the series conveyors, the Project Factory features equipment that is widely used for transporting and removing various types of raw materials and industrial waste: The Redler or Drag Carrier.

Drag carriers or redlers are equipment applied for light and heavy transport services, and its components are normally designed and manufactured for high wear and abrasion resistance.

The equipment basically consists of an open or closed chute through which the product is transported (dragged) through one or more driving currents(s) gifted(s) of trailing taliscas. It usually works with the drag chain immersed in the transported product, carrying high layers of product. It is well used in handling various products, grains, minerals, corrosive, toxic, purulent and very hot.

Depending on the shape and height of your gutter, which can be divided into two compartments can carry loads in two directions, i.e, over, in the upper part of the chain and still below on the lower part.

Can be manufactured with custom capacity and length, according to the transported material and required length.

Some possible variations in the design of these equipments:

  • Single Drag Carrier, suitable for horizontal transport or with small inclines;
  • Inclined conveyors, L-shaped or tilted up to 90º.
  • Self-cleaning conveyors indicated products that cannot be contaminated;
  • Conveyor with slivers, suitable for highly abrasive and high temperature products, as in boiler ash removal, feeding with wood chips and residues.

Depending on the application, conveyors can be equipped with UHMW chain, bottoms and sides coated with anti-wear plate and/or made of stainless steel.


1. INTRODUCTION TO MANUALS (Page final)

The manuals below detail the operating principles, operational advantages and essential structural aspects to ensure performance, Security and Economics. The technical approach includes not only descriptions of the components, but also calculation and selection methods based on tables and equations guided by the manuals.


2. TYPES OF TRAPING CARRIERS

The documents classify the drag carriers in various categories:

  • Round: Ideal for reducing material accumulation and facilitating cleaning, being widely used in operations where maintenance is critical.
  • flat background: Provides greater transport capacity with less space occupation, suitable for materials that move “en masse” without the need for excessive agitation.
  • Trajectories in L and S: Allow adaptation to complex industrial layouts, enabling integration with other handling systems.

3. Components and Construction

The manuals detail the main components that make up drag carriers:

  • Chains and reeds: Made of Soldier Steel, forged or using high resistance polymers, Like UHMW, that minimize friction and wear.
  • Structures and Coatings: Flanges Use, Covers for protection against dust and dirt, and optional coatings to prolong the useful life.
  • Return and tensioning systems: Include rails, rollers and self -cleaning mechanisms that guarantee the stability and proper adjustment of the current, besides facilitating maintenance.

4. Applications and industrial sectors

Drag carriers find application in various sectors:

  • Agribusiness: Grain transport, bran, ensuring low friction and avoiding products degradation.
  • Mining: Movement of minerals and aggregates with reduction of vibrations and noise.
  • Chemical and food industry: POST AND GRUMULATE TRANSFER, maintaining the integrity of the product and avoiding cross contamination.

5. Safety and operation standards

Security is a paramount aspect in the operation of trawls. Documents emphasize the need for:

  • Compliance with: Follow standards guidelines like ANSI B20.1, Cement, Osha and others, ensuring that all protection devices (covers, grades, Energy blocking systems) Always be installed.
  • Maintenance and operation procedures: Clear instructions for power blockade (lockout/tagout) during interventions, avoiding accident risks.
  • Regular inspections: Continuous monitoring of protective components and systems to ensure safe and efficient equipment operation.

6. RESOURCES FOR CALCULATION AND SELECTION

A fundamental part of the manuals is dedicated to the methods of calculation and selection of carriers. Among the main resources and equations stand out:

  • Capacity calculation (CFH – Cubic Feet per Hour): To scale the carrier, It is necessary to convert the desired capacity to tons per hour (TPH) for cubic feet per hour (CFH) Using the density of the material:

    CFH = Required capacity (TPH) × 2000 / Material density (lbs/ft³)

    Example: To 100 Peeled corn TPH (Density ≈ 45 lbs/ft³):
    CFH = (100 × 2000) / 45 ≈ 4445 CFH

    After this calculation, The designer consults capacity tables to choose the size and speed (for example, 9", 12" etc.) that meet or exceed the calculated value.
  • Calculation of the necessary power (TSHP – Total Shaft Horsepower): Although manuals present several methods, One of the suggested calculations relates the chain pull (CP), The axis rotation (RPM) and the effective radius of the pine nut (F) with efficiency (E) system:

    TSHP = CP × RPM × F / (33000 × E)

    This equation allows to determine the power necessary to move the carrier considering mechanical losses and system efficiency. The manuals provide tables with component data so that this verification is done precisely.
  • Complementary calculations: Other equations present in the documents assist in the sizing of the components.

These equations, combined with specifications tables, allow a precise selection of the drag carrier appropriate to the specific conditions of each application.

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Conveyors Series: Redler or Drag Carrier
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