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Flexicon flexible screw conveyors can feed bulk solids from large pellets to sub-micron powders in any direction, around obstructions, over short or long distances, with no separation of blends, dust-free and at low cost.
Also known as a spiral conveyor, screw conveyor, helix conveyor or centerless auger conveyor, 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. Its simple design delivers efficient performance and high reliability while reducing maintenance and cost.
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Versatility of installation and the ability to deal with the widest range of material particle sizes, bulk densities and flow properties puts Spiroflow systems and equipment at the leading edge of flexible screw conveyor technology.
Dust-free in operation
The Spiroflow flexible screw conveyor is totally sealed during operation - and because air isn't used as a conveying medium, there's no risk of dust contamination or humidity from the atmosphere, a critical factor when used in food and pharmaceutical applications. In addition, the presence of dust can cause not only airborne contamination of other products, but can also pose a threat to the working environment.
Gentle handling of product
The rotating flexible screw conveyor spiral, being centralised within the conveying tube, gently moves the material without degrading it. Its unique action also eliminates the risk of mixed product separation.
Constant remixing
The action of the Spiroflow flexible screw conveyor
ensures the material is being constantly remixed.
This is particularly important when feeding pre-mixed product to packaging and tabletting machinery.
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AERO-FLEX flexible conveying systems are engineered to transport most dry bulk materials at a reduced cost. They convey powders and granular material without separation of product.
The Aero-Flex system utilizes a stainless steel or carbon steel one-piece helix, which is enclosed within a stationary plastic tubing, for transferring material from its feed hopper to the discharge point, quickly and efficiently.
Operating Principle of flexible conveying system
Applications
The AERO-FLEX is excellent for transferring most types of products including, Foods, Pharmaceuticals, Chemicals, and Plastics, from bulk bag unloaders, bag dump stations, and feed hoppers.
- Load filling machines 1 Blenders/Mixers 1 Surge Hoppers
- Bulk Bag Loaders
- Grinders, Pulverizers, Air Classifiers
- Load and unload sifters
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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.
Heavy-duty Cement Screw Conveyors, as used in the concrete industry, are particularly robust and equipped with self-adjusting stuffing boxes.
Extra-heavy-duty Screw Conveyors, designed for continuous operation in cement, lime and gypsum processing, come with flanged shaft couplings for easy screw replacement.
Difficult materials with a high moisture content that have a tendency to stick to the centre pipe or flight in traditional screw conveyors, such as sludge or screenings, are successfully handled by Shaftless Screw or Spiral Conveyors with ultra-heavy-duty helicoid flighting.
As a result of their long-term expertise in screw feeding, WAM® have developed a comprehensive range of high-accuracy Screw Feeders for both micro-feed rates and large volumes. The range includes feeders with agitator tools, feeders with flexible troughs for gently massaging and blending the material, feeders for steep angle applications and many others
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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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Conveyors - Screw Conveyors
The self select system offers the user Conveyors in component form for standard and heavy duty applications, sizes 150, 200, 250 and 300mm. Rotolok will design and build 'tailor-made' Screw Conveyors from 100mm through to 500mm with length and inclines to suit.
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DIN15261 – UNI10318/10468 – ANSI/CEMA350
* Generous rotating shafts without any intermediate supporting
* No welding in the coupling pins/shaft
* Perfect shafting and pin ends alignment
* Drawn screws
* Pins extractable from the
shaft and replaceable
Application: Conveyors and feeders for heavy duty application, with high temperatures and/or abrasive materials
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Screw conveyor W
For all types of chips. Mostly used in combination with pumping and suction stations.
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U Trough Screw Conveyors
1. Screw
2. Screw with Bare Pipe at Discharge End
3. Misc. Coupling Bolts & Various Assembly Bolts
4. Coupling Shaft
5. Tail Shaft
6. Hanger with Bearing
7. Trough End Plate
8. Seal Plate with Ball Bearing
9. End Plate for Screw Conveyor Drive
10. Trough
11. Trough with Fitted Discharge Spout
12. Flanged Covers with Buttstrap
13. Cover with Fitted Inlet
14. Screw Conveyor Drive, Motor Mount,V-Belt Drive and Guard.
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Scope of use
For transporting of uniform powdery products into automatic packaging machine and batch meters.
Operation principle
By means of a screw, the product is fed into the desired device in a closed system. Size and output is adjusted to customer needs.
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Used to collect, transfer, meter feed, and distribute wet or dry chips and turnings. Prab screw conveyors are designed and engineered specifically for each application. Are available in various diameters from 6 - 24 inches. Excellent when used in shredder feeding applications.
Screw Conveyor Features:
- Conveys wet or dry metal chips and turnings
- Abrasion resistant flared trough construction
- Heavy-duty standard bearings and motor for ease of maintenance
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Screw compressors for the refrigeration industry VMY, VARISCREW an VARISCREW+
oil-injected screw compressor stages in 3 types on construction of different design with a total of 20 sizes. Suction volume 233 m³/h - 9.900 m³/h
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MSC 127 Hermetic Vertical Screw Compressors
Size Options 4 sizes
Horsepower 80 - 200 HP
Capacity 8 - 225 TR (28 - 791 kW)
Displacement 186 - 335 CFM
Refrigerants R22, R134a, R404A, R407C, R507 & other HFCs
Applications
Air Conditioning & Commercial Refrigeration
Ice skating rinks, Process ice production, Air-conditioning chillers for commercial buildings, Refrigeration chillers for refrigerated warehouses, Air-conditioning and Process chillers for military and passenger ships . . . and so much more.
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Large Horizontal Open Drive Screw Compressors
Size Options 15 sizes
Horsepower 100 - 2,200 HP
Capacity 50 - 2,500 TR (176 - 8,785 kW)
Displacement 278 - 3,336 CFM
Refrigerants R22, R134a, R404A, R407C, R507, R717 (ammonia) & other HFCs
Applications
Air Conditioning, Refrigeration & Gas Liquidfication
Ice skating rinks, Process ice production, Air-conditioning chillers for commercial buildings, Ground support aircraft cooling systems, Landfill vapor recovery, Pharmaceutical and cryogenic labs and so much more.
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The supply range of Grasso screw compressors comprises 30 types, subdivided into 4 series (SH, MC, LT and C) which differ from each other in the volume flow ranges and in the degree of integrating functional components of the package into the compressor housing. Further advantages for our customers are: patented rotor profile, gas pulsation protection, Vi-control in full and part load operation and a design to ensure easy maintenance.
Grasso now has one of the most extensive and comprehensive range of screw compressors (Grasso SC) providing uniform steps of capacity with 30 different sizes.
Grasso screw compressor packages are available in single (Grasso SP1) or two-stage (Grasso SP2) versions and as DuoPack executions (Grasso SPduo).
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The supply range of Grasso screw compressors comprises 30 types, subdivided into 4 series (SH, MC, LT and C) which differ from each other in the volume flow ranges and in the degree of integrating functional components of the package into the compressor housing. Further advantages for our customers are: patented rotor profile, gas pulsation protection, Vi-control in full and part load operation and a design to ensure easy maintenance.
Grasso now has one of the most extensive and comprehensive range of screw compressors (Grasso SC) providing uniform steps of capacity with 30 different sizes.
Grasso screw compressor packages are available in single (Grasso SP1) or two-stage (Grasso SP2) versions and as DuoPack executions (Grasso SPduo).
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| ... products without technical information |
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