Literature: Tubular Drag Conveyors

See below for all literature and technical resources regarding our tubular drag conveyors.

Case Study: A Manufacturer of Explosives Seeks to Safely and Effectively Off-Load Railcars of Corrosive Bulk Material

Rotary valve in underground pit feeds the Tube Drag Conveyor.CHALLENGE
Help transition a facility from manufacturing plant to distribution hub. Design and build a safe, automated way to unload bulk material from railcars.

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Case Study: Human Health Benefits, Operational Efficiencies, Increased Productivity, Cost Improvements

Multi-level Tubular Drag Conveyor System designed for a Research Animal facility.CHALLENGE
GlaxoSmithKline faced a waste bedding management challenge involving both laboratory animal allergies and ergonomic related employee injuries.

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Case Study: The Genentech South San Francisco Campus Achieves Cost Savings and Operating Efficiency By Applying the Right Waste Bedding Handling System

Tubular Drag ConveyorCHALLENGE
More than 150 bags of bedding are required to support the cage changing process performed weekly. When plans were in place to construct a new multi-story vivarium, Laboratory Animal Resources senior management knew they needed to find an automated alternative to their current process of manually transporting clean and dirty bags of bedding.

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Case Study: Tubular Drag Conveying Technology

Tubular Drag Conveyor System InstallationA COST-EFFECTIVE AND ENERGY SAVING ALTERNATIVE TO PNEUMATIC CONVEYING
The analysis of the optimal conveying method begins with understanding system and material variables such as; energy requirements, bulk density of material, purchasing/storage of material prior to use, conveying distance, space and location, and durability and maintenance. These are just a few of the many elements that must be considered in conveyor selection and design.

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Case Study: Stillwater Mining Improves Smelting Efficiency and Yield, Eliminates Dust with Tubular Drag Conveyor

Screw Feeder installed in a mining facility.CHALLENGE
Stillwater Mining was challenged with maintaining constant temperatures in a smelting furnace to ensure efficient extraction. Also, to create a safe, environmentally friendly process for dumping bulk bags of carbon dust.

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Case Study: Fiber By-Products Reduces Maintenance, Dust and Reprocessing of End Product with Tubular Drag Conveyor

Tubular Drag Conveyor InstallationCHALLENGE
A pelletized fuel manufacturer was spending time and effort maintaining a conveyor that also created fines and dust.

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Application Review: Food Processor Replaces Aeromechanical Conveyor with Hapman Tubular Drag System Eliminating Contamination,Logging, Jamming & Shutdowns

Tubular Drag ConveyorCHALLENGE
A fast growing, finished product food processor was using aeromechanical conveyors to convey product in their production operations for processing and prepackaging. Unfortunately, the aeromechanical conveyors caused serious problems in this application. First, the cables were continually fraying and breaking - putting small metallic fragments into their product, which caused a tremendous amount of product contamination and rejection. Secondly, the aeromechanical conveyors required constant maintenance because they consistently clogged and jammed - shutdowns became the norm.

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Application Review: Tubular Drag Conveying System - Tire Manufacturer with Dust-Free Multiple Inlet System Handling Carbon Black

Tubular Drag ConveyorCHALLENGE
A major tire manufacturer needed to fit a material handling conveyor into a tight space, move the material (carbon black) from inlets and discharge it at two locations. In addition, the intermediate discharge had to be free of residual build-up, and the entire system dust free.

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Application Review: Tubular Drag Conveying System - Mining Operation Handles and Conveys Ammonium Nitrate Reducing Degradation

Tubular Drag ConveyorCHALLENGE
A mining operation located in the mountains of Chile required an equipment method to handle and convey ammonium nitrate (NH4NO3) without degradation, 50 feet vertically, into a silo. Their current method of air conveying was damaging the prill of the material, resulting in an oxidizing agent which was proving less than expected reaction performance.

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Case Study: The University of California San Francisco, Laboratory Animal Resource Center (LARC) Finds Significant Cost Savings in Effective Handling of Waste Bedding Material

Tubular Drag ConveyorCHALLENGE
The facility, which manages over 55,000 rodent cages, needed a more reliable and cost effective way to dispose of waste bedding, as well as mitigate allergen exposure, and reduce physical injuries to employees due to repetitive lifting, bending and twisting.

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Case Study: Uniformed Services University Health Science Center for Laboratory Animal Medicine Overcomes a Severe Bedding Handling Challenge

Waste Bedding Handling System installed in a Research Animal facility.CHALLENGE
A fully operational research laboratory needed a better way for technicians to remove and dispose of more than 1,200 pounds of soiled animal bedding per day.

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Case Study: Aluminum Casting Company Leverages Custom-Built Hapman Equipment to Create a Cleaner, Quieter Foundry

Tubular Drag Conveyor System with hopper and integral dust collection installation.CHALLENGE
A casting foundry wanted to create a cleaner, more efficient environment that was also safe for workers.

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Application Review: Biotech Lab Handling Dirty Mice Bedding From Cages with Cleaning Disposal System

Tubular Drag ConveyorCHALLENGE
A biotech lab needed an easy and dependable method to handle dirty animal bedding from cages.

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Tech Brief: Selecting A Conveyor for Effectively Moving Bulk Materials

Tubular Drag ConveyorCHALLENGE
Selecting a conveyor for a bulk material handling application is not always as straight forward as one might think. Moving material consistently, at a rate that is inline with production requirements, and in a manner that does not contribute negatively to the plant operating environment; such as dusting or increased maintenance, can be a challenging endeavor for process engineers and procurement personnel.

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Tech Brief: The Evaluation of Tubular Drag Conveyor Types

Variety of chain types available for Hapman's Tubular Drag Conveyor.The Tubular drag conveyor has become the system of choice for many manufacturers who process bulk materials because of the conveyor’s layout flexibility, many flight and chain options that prevent degradation and segregation, and the low estimated total cost of ownership when compared to other conveying types.

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Tech Brief: Tubular Drag Technology for the Conveyance of Powder and Bulk Solids

Circular layout of the Tubular Drag Conveyor.CHALLENGE
Engineering conveying systems for today’s processors requires far more than just moving product from point A to point B. Engineers must also consider plant and worker safety through assessing how the process affects the environment. And with the increased cost of materials and processing, it has never been more important to ensure materials are protected and stay within the process.

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Tech Brief: Tubular Drag Conveying - A Cost-Effective, Energy saving Alternative to Pneumatic Conveying

Tubular Drag ConveyorPneumatic conveying is often considered the standard solution for transferring materials in bulk solids plants. In many applications, however, a type of mechanical conveying — tubular drag conveying — can be a more cost-effective solution. Like a pneumatic conveying system, the tubular drag conveyor (also called a tubular drag chain conveyor) provide enclosed conveying and can be custom-designed to handle short or long conveying distances, multiple material feed and discharge points, and a range of material and process requirements.

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