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A Flexicon flexible screw conveyor, also known as a spiral conveyor, screw conveyor, helix conveyor or centerless auger conveyor, consists of a spring steel or stainless steel, flexible screw that is enclosed in a flexible or rigid plastic tube, or a rigid steel tube, and driven by an electric motor normally located at the discharge end of the conveyor. This simple design delivers efficient performance and high reliability while reducing maintenance and cost. When properly engineered according to the specific characteristics of the material being conveyed and the process into which it will be integrated, a flexible screw conveyor can outperform rigid screw conveyors, bucket elevators, drag chain conveyors, aero mechanical conveyors and other equipment intended to transport powder and bulk solid materials.
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Metalfab's highly accurate, dependable Model DB2 volumetric screw feeder has only five moving parts - drive, coupling, 2 bearings and a screw. The large diameter inlet to the V-shaped trough, which helps insure complete filling of screw flights, provides feed accuracies of +/- 1 to 1 1/2%. When a Metalfab Posibin or Bin Activator is used to supply the feeder, even greater accuracies may be obtained.
A bin activator is recommended when feed rates are more than 1,000 cu. ft./hr. or non-free flowing materials are in process. Flight-type screws with through shafts are standard. Oversize ball bearings which are sealed and provided with grease fittings support the shaft. Operating noise levels are within OSHA requirements. All moving parts are guarded and the screw section is totally enclosed.
Features/Benefits
Accuracy: ±1 to 1 1/2% (one minute samples)
Screw Sizes: 6 - 20" diameter
Inlet to Outlet: 3' to 12'
Feed Rates: 5,000 to 18,000 cu. ft./hr. maximum
Operating Characteristics
Provides precise metering of dry materials in the chemical, food, plastics, pharmaceutical and foundry industries
Can also be used as a short distance conveyor with center of inlet to outlet dimensions of 3' to 12' |
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| The MFX is a Flexible Helix Conveyor. Conveyor screw and external pipe can be bent without any negative effect on the function. The external pipe is manufactured from elastomer, whereas the screw consists of a number of flight segments in plastic for industrial use. The flight segments are enclosed by a metallic spiral and supported by a steel wire core. |
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| Over the years Screw Conveyors for specific purposes have been developed. Cement Screw Conveyors and Feeders for concrete batching plants were the first to be industrialised in the early 1970s. Later came light-duty Flour Milling Screw Conveyors with synthetic maintenance-free intermediate bearings. |
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| The chief innovative concept of the system is based on the criterion of conveying metal chips through a straight collector tube impelled by a rotating screw operating along the entire lenght of the tube. |
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The screw conveyor is the most commonly used equipment in mechanic conveyance and volumetric batching of solid powdered and granulated products. Versions available for conveyors are the following:
- "U" section closed by a sealing cover.
- Tube section.
The seals on the end mountings are realized with a double ring; the chamber between the two rings can be pressurized. Any possible intermediate mountings may be realized with bushings of different special materials, in accordance with the type of product. The bushing can be flowed with compressed air.
The following versions are available:
- carbon steel
- stainless steel AISI 304 or AISI 316
The drive is supplied by geared motor and chain transmission.
Also available in compliance with ATEX Directives - Category 2GD/3GD. |
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| ... products without technical information |
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Flexible lacing with self tapping screws for heavy duty belts up to 30 mm thick:
- No drilling preparation, no template
- The screws drill themselves through the belt
- Good compatibility with scrapers
- Very long life time.
- Installation regardless of weather conditions
- Possible to use for an emergency splice of a steel cord belt
Material:
Reinforced rubber corresponding to conveyor quality: wear resistant, heat resistant, oil resistant, fire resistant, white FDA, textile on the bottom and non magnetic.
Installation:
By using an electric screw driver, a hand brace or a pneumatic screw driver.
Packaging:
In length up to 3 m in one piece or on roll up to 25 m long. |
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