Chainflow Drag Chain Conveyors
Innovative Conveyor Technologies Optimize Efficiency in Dry Bulk and Powder Processing
HOW IT WORKS & BENEFITS
There are several benefits of Spiroflow’s Chainflow tubular chain drag conveyor, from efficiency to gentle handling of materials and products. Understanding how this system works will help you choose this solution for improved and streamlined production.
Tubular drag conveyors are the only conveyors that can work in three planes. Thanks to the flexibility of the layout, our engineers are able to design complex circuits, eliminating transfer points while using a single drive.
The conveyor can fit with multiple-outlet applications so that one single conveyor can deliver materials to more than one point. Multiple inlets are also possible, but only one can be operational at any given time.
Convey over long distances with maximum straight-line lengths of up to 250 ft (76m) per conveyor and link multiple conveyor solutions for longer distances. Enjoy the operational flexibility to stop and start under load and run empty with most materials. You can also flood or meter feed the conveyor based on your product flow characteristics. Maximize your use with a mobile design available for multiple in-plant applications or freight car and truck loading.
All chains used in our chain assembly are constructed from 304 or 316 stainless steel with one-piece USDA-accepted polyurethane molded discs secured at fixed intervals. With proper tensioning, end users can expect a very long chain life and minimal chain replacement expenditures.
Because tubular drag conveyors can operate in three (3) planes there is an endless number of layout options. Our engineers will evaluate your application requirements and site restrictions to determine the optimal layout. Typical circuits include the layouts below, however, this is by no means a complete list.
MODELS & SPECIFICATIONS
Our Chainflow Drag Chain conveyor is offered in a 4” (100cm) size. Our engineers will access your application needs and recommend the optimal configuration and options.
- Tubes: 304 Stainless Steel
- Chain: 304 Stainless Steel
- Discs: UHMWPE
- Drive assembly
- Automatic chain tensioner
- Sweeps at standard 90° angles
- Material feed inlet
- Material discharge outlet
- 3 -7.5 hp (2.2 – 5.6 kW) Motor
- The motor is sized to each application.
- 60-80 psi
- Multiple inlets & outlets are allowed.
- Material can be metered or flood fed. This is product dependent.
- Inlets can be fitted with baffles, lids, hoppers or agitators.
- Variable conveying rates. Custom designs are available.
COMPONENTS & OPTIONS
Spiroflow’s Chainflow tubular drag chain conveyor is designed to achieve gentle handling and low material degradation. A series of straight and curved tubes coupled to stainless steel housings form a circuit where the product can enter and exit through tube mounted chutes.
Conveying is achieved when material enters the space between discs molded to an endless chain that is contained within the circuit. The chain and discs are dragged through the circuit by a driven sprocket at one end. Additional sprockets can be added to the circuit to provide frictionless direction changes and reduce the load on the system. Continuous tension is applied to the chain via a patented pneumatically actuated tensioning assembly mounted in the 180° idler assembly included with the system.
Straight Tube Sections
Chain & Disc
Drive Housing & Outlet
Corner Housing in Production
Inlet Housing & Adjustable Baffle
Site Glass/Inspection Port
Return Housing & Tensioner
Tube Joiner & Tube Support
Chain in the Sprocket
CAPACITY & SELECTION
Chainflow Tubular Drag Conveyors can operate at rates up to 100 ft/min (30m/min) depending on material characteristics & layout. Capacities are typically up to 6.2 ft3/min (176 lpm)
The capacity charts below allow you to roughly estimate the size of the conveyor and the speed based on the throughput requirements in cubic feet/minute (cubic liters/min). The horizontal lines represent the velocity at which your product will pass through the conveyor. The vertical lines indicate the volumetric throughput rate in liters per minute. The diagonal lines are the sizes of the conveyors available.
But don’t think you have to figure out which conveyor will work best for your application. Our sales engineers can do that for you!
Tubular Drag Conveyor Capacity Charts
- Based on your material’s bulk density, calculate the required conveying rate in feet/minute or liters/minute. Locate the amount required on the horizontal scale.
- Move up the vertical line and note where it intersects with one or more diagonal lines. Each intersection point indicates a possible conveyor size.
- From each intersection point, move left horizontally all the way to the vertical scale, indicating the conveyor cable speed.
There are many factors that enter into the tubular conveyor selection process. Beyond the mechanical selection described above, we carefully consider the physical characteristics of the material to be conveyed and the equipment duty cycle.
Tubular Drag Conveyor Selection Guidelines
- The Chainflow conveyor can operate at speeds up to 100 ft/min (30m/min).
- It is generally advisable to apply a larger conveyor at a slower speed if your material has sluggish flow characteristics, is sticky, abrasive or if the equipment operational duty cycle is extensive.
- Smaller conveyor sizes and faster speeds are usually selected when the material is free-flowing and non-abrasive and/or the equipment duty cycle is low.
- Future capacity requirements should be considered. It may be prudent to install a larger conveyor now at a lower speed. You can increase the speed later to accommodate a higher capacity. This can be done with the use of a variable frequency drive or gearing change.
- Surges and uneven feed conditions should be considered. Surge hoppers may provide more constant feeding and may enable the use of a smaller conveyor.