Vde18 Folder A4
- 1. Bast Fibre Processing Pneumatic Transport and Filtration
- 2. Complete processing lines for natural fibres (flax, hemp and kenaf). Pneumatic transport and dust extraction systems for natural and synthetic fibres, paper and card board waste, insulation material, hygienic products, wood, etc… Engineering: A team of enthusiastic engineers for the development and innovation of all our products. Manufacturing:Workshopwithhighlyskilled metal workers who build the machines. Assembly: Experienced mechanics travelling all over the world for the assembly and start up on site. Company Structure: Design and Production of :
- 3. 3 Bast Fibre Processing Flax Scutching Core Cleaning Pneumatic Transport Systems Contact 4 8 10 12 16 Content
- 4. Bast Fibre Processing Separation of fibre and core from hemp, flax or kenaf Processing line with capacity of 6 to 8 tons per hour of raw straw at the entry of the line. A line for 3 to 4 tons per hour is also possible. Turnkeyprojectincludingelectricalcontrols, bale handling equipment, assembly of the line and start up on site Important aspects for good processing are: • Length of straw at entrance: Ideally 400mm (Max. 600mm) • Moisture content: Flax and Hemp 12-18%; Kenaf 18-25% • Straw quality: Fibre percentage of input material ±25% • Straw condition: Slightly retted to a gold or light-grey colour • Stalk diameter: not higher than 20mm First section of the line: Opening & Decorticating of the straw Output fibres with approx. 15-20% of core (‘paper quality’) 4 Short Fibre Baling Online Transfer to Refining Lines Core Buffer Container
- 5. Dust Extraction Filter Units 5 Refining Lines Core Cleaning Buffer Silo for Core Mineral Dust Treatment Bale Opening Dust Briquetting Decortication Section with Decorticators and Fibre Separators Fibre Balers Pallet Handling Robot + Wrapping Unit
- 6. Entrance of Refining Lines Hopperfeeder to Open Fibre Material and to Form a Regular Layer Towards the Refining Lines 6 Bast Fibre Processing Further cleaning of the fibres up to a point where they contain less than 5% of core (‘technical fibres’) The clean fibres are ready for further processing, for example in the automotive, non woven or furniture industry. New applications in composite and construction material are also gaining interest. Online transfer from the decorticating section to several refining lines Fibres are baled after refining Conveyor for Manual Feeding of Fibre Bales Air Separators for Pneumatic Transport & Feeding of Fibre Material Clean Fibre Baler
- 7. 7 Bast Fibre Processing Cleaning of the core material (removal of short fibres) Thecleancorecanbeusedasstablebedding or in construction material The wooden core of a bast plant is also called: Shives (North America), Shivs United Kingdom), Hurds (Australia), Wood (Netherlands), Anas/Chènevottes (France) or Schäben (Germany). Pressing in bags or storage in bulk Dust extraction for the complete line with filter units in negative pressure. Separate treatment of mineral and organic dust.
- 8. 8 Scutching Turbine Scutching Turbine for Long Fibre Flax Capacityof3.000tonsperhour(goodquality flax) The scutched flax is ready to be combed (heckled) and processed further into yarn and eventually into linen textiles. Van Dommele builds complete scutching lines but also equipment to clean the by- products such as the core, the tow (or short fibres) and the seed. Aspiration of Shives Aspiration of Tow Primary Seed Cleaning (Shaking Unit) Ripping Comb for Removal of Seed Balls Entrance of the Line (Unrolling of Flax Bales) Divider (Increase of Flax Layer Speed) Breaking Units Scutching Elements for the Bottom Part of Flax Stems Transfert Unit Scutching Elements for the Top Part of Flax Stems Exit of the Line (Final Quality Check) Baling Press for Scutched Flax
- 9. 9Differents sections in the line: • Opening of the bales (+ aspiration of the seed) • Breaking of the stems (+ aspiration of the shives) • Scutching of the fibres (+ aspiration of the tow) • Baling of the scutched long fibre flax Scutching Turbine
- 10. 10 Core Cleaning Flax Shive Cleaning Duvex Equipped with Seed Separating System BigBag Filling Station for the Seed Removal of impurities such as short fibres, seed, dust and rocks. Various possibilites; duvex separators, shakers, drum sieves, zig zags, etc. Depending on the required capacity a detailed cleaning system is designed. Removal of the dust is in many cases achieved using pneumatic transportation over air separators. Separating of Seed (Small Shives are Aspirated to a Cyclone) Fibre Exit (Fibres go to a Baling Press) Removal of Clean Shives with Screw Conveyors Air Separator for Material Discharge (and Dust Removal) Inclined Shaker Drum Sieve Zigzag
- 11. 11 Buffer Silo and Bagging Units Buffer Silo to store clean core material Bagging units to press the core into bags. Different bag sizes are possible based on specific market demands. High capacity automatic bagging presses complete with stacking robot and wrapping unit Semi-automatic bagging presses with manual removal of the bags Filling of containers if the core has to be stored in bulk. Filling system with screw conveyors or with a high pressure blowing circuit.
- 12. 12 Pneumatic Transport Systems Filter Unit Chopper Fan for Cardboard Waste Processing of paper and card board waste Aspiration and discharge of waste material over rotary air separators. The waste material is baled with a horizontal baler and the dust is evacuated towards a filter unit. Air Separator for Discharge of Waste Material Buffer Belt Conveyor Horizontal Baling Press (Hydraulic)
- 13. 13 Transport Fans for Waste Coming from Multiple Production Lines Processing of waste coming from the production of hygienic products such as diapers, sanitary napkins, incontinence pads, make up pads, etc. made out of paper shreds, cotton, plastic foil, dust and powder Aspiration of waste material and discharge with a rotary air separator above a hydraulic baling press After baling and wrapping the waste is ready for transport to a recycling facility. The dust is evacuated towards a filter unit. Pneumatic Transport Systems Bale Evacuation and Weighing System Wrapping Unit Vertical Baling Press Compression Belt Air Separator for Material Discharge Pneumatic Valves to Send Waste Material to Second Baling Press (Bypass System) Buffer Belt Conveyor
- 14. 14 Processing of waste coming from the production of insulation material (mineral wool) • The waste material can be recycled immediately (by blowing it back to the start of the production lines) or it can be evacuated towards a hydraulic baler. • The dust is aspirated and collected in a series of filter units. Transport systems for natural and synthetic fibres • Pneumatic transport over rotary or drum separators is applied frequently because dust is separated during transport of the material. This improves the quality of the fibre material. • The dust is collected in a filter unit. Air Separator Pneumatic Transport Systems Filter Units (Working in Negative Pressure) Electrical Control Cabinet Crushing / Shredding Unit Horizontal Baling PressFeeding Belt Conveyor for Waste Material Suction Fan Placed Inside Sound Reducing Enclosure Belt Conveyors Dust Fan (part of Pneumatic Dust Removal Circuit) Dust Cyclone (part of Pneumatic Dust Removal Circuit)
- 15. 15 Other Equipment Hopper Feeders (Opening of fibre material) Baling presses (Sister Company: Valvan Baling Systems) Filters – Fans – Separators (Complete systems for pneumatic transport and dust extraction) Electrical control systems
- 16. Van Dommele Engineering Bissegemstraat 169 8560 Gullegem - Wevelgem BELGIUM Tel.: +32 (0)56 41 10 94 Fax: +32 (0)56 41 99 56 INFO@VANDOMMELE.BE W W W. VA N D O M M E L E . B E