Feeding systems

For precise feeding of a wide range of materials

Precise and efficient

Three-Tec offers you an extensive product range of different feeding systems, with which a wide variety of materials can be precisely fed. From smallest quantities from 5 g per hour up to several tons. The performance of the equipment is particularly evident in the efficient feeding of poorly flowing powders. Both for gravimetric as well as the volumetric feeding, Three-Tec offers the appropriate devices incl. control.

The sophisticated design allows assembly, disassembly and cleaning of all components in contact with the product in just a few steps and in a very short time. All components in contact with the product consist of stainless steel 1.4404 (AISI 316L) and can therefore be cleaned easily and efficiently with a wide range of liquids and solvents. Automated cleaning systems such as WIP (washing in place), CIP (cleaning in place) or SIP (sterilization in place) are available on request.

Highlights of our feeding systems

  • Efficient feeding

    even of poorly flowing materials

  • Various solutions

    for gravimetric and volumetric feeding

  • Quick assembly and disassembly

    of all components in contact with the product

  • Dismantling of the feeding screw

    uncomplicated possible without tools

  • Customer requirements

    are implemented during development and production

  • Wide range of throughputs

    Smallest quantities from 5 g per hour up to several tons

Flat-tray feeders

Three-Tec's flat-tray feeders guarantee precise volumetric and gravimetric feeding of good to poor-flowing, moist or bridging products with flowabilities of ffc 1 - 5. All flat-bottom feeders can be supplemented with a scale and control system at any time and operated as a gravimetric "Loss in Weight" or "Gain in Weight" and continuous system or used for batch filling.

ZD5_ZD9FB_kl

Features

  • Precise feeding even with complex product behavior
  • extension with scale and control possible at any time
  • Easily exchangeable feeding tools
  • Various feeding tools such as auger, concave or spiral screws facilitate adaptation to the product to be fed
  • Very easy to clean
  • Stable feeding thanks to gentle conveyance of the bulk material
  • Feeding screws easy to replace thanks to bayonet fasteners
  • tray scrapers can be designed and manufactured according to customer requirements
  • Wide open screw channel
  • Small residual amounts remain

Feeder with integrated load cell

The two feeder types ZD 5 i6000 and ZD 9 i10000 are also available with integrated load cells instead of the platform scale. The all-in-one solution makes the feeder smaller, lighter (only 5 kg) and easier to handle and thus easier to position.

Due to the low drop height, the feeder has a lower susceptibility to external disturbance variables such as drafts or vibration. The smaller weight of the device also improves the resolution of the load cell considerably.

Feeder_Menu

Features

  • Flexible and multifunctional
  • Space-saving
  • Efficient and economical
  • A lightweight at only 5 kg
  • Speed 1-500 rpm
  • Accuracy 0.015 %
  • Load class 0.3-3 kg
  • Protection class IP 65
  • For difficult to dose products

Single and twin screw feeders

Single- and twin-screw feeders allow precise volumetric and gravimetric feeding of well-flowing powders and granules. All standard feeders can be supplemented with a scale and weighing electronics and operated as gravimetric "loss-in-weight" or batch systems.

ZD12B

Features

  • Precise volumetric and gravimetric feeding
  • Extension with scale and weighing electronics possible
  • Easily exchangeable feeding tools
  • Various feeding tools such as auger, concave or spiral screws facilitate adaptation to the product to be fed
  • Easy to clean and easy to disassemble
  • Available with and without bridge breaker

Application areas

Discover the versatile application possibilities of our feeding systems.

Pharma
Active ingredients
Auxiliary materials
Feeding to tablet presses
Multiple feeding systems
Volumetric feeding
Gravimetric feeding
Batch filling or continuous feeding
Food & Pet Food
Cereals
Pet food, fish food
Food supplements
Flavors
Textured vegetable protein & meat analogs
Powdered drink
Flour, starch & bakery ingredients
Chemistry
Detergent
Minerals & mineral substances
Fertilizer
De-icing
Toner
Dust & pollen
Metal powders & heavy flowing powders
Ceramics
Dry ice
Cosmetics
Plastics
Granules
Masterbatch
Side feeding in the extruder

Contact

Are you interested in our feeding systems, do you have any questions about them or would you like personal advice on the subject of feeding?

Options

In order to configure the feeding system perfectly for the respective process, Three-Tec offers a wide variety of options:

Feeding tools

With the right feeding tool, you can match your feeding system exactly to the product for the best results. Learn more about the different options here.

Drive

One-engined (1M)
Most Three-Tec metering units are available with either one or two drives. With single-motor machines, the soil scraper or bridge breaker and metering tools are driven by the same motor via a gearbox. The speed of the floor scraper or bridge breaker always depends on the rotational speed of the metering augers.

Advantages one-engined:
- More compact feeding systems
- Smaller weight (especially advantageous for gravimetric systems)
- Fewer cables (smaller influence on the scale for gravimetric feeding)
- Small programming effort

Twin-engined (2M)
Floor scrapers and bridge breakers are driven by separately controlled motors.
Advantages twin-engined:
- Better alignment to the product possible
- Later product-specific adjustments possible
- Progressive speed curve of the tray scraper possible with decreasing product quantity in the hopper

Bellows

In order to avoid interference with gravimetric systems due to dust protection, bellows are installed as flexible connections with the vessels.

Hoppers

Feeding hoppers are available in a wide variety of sizes and shapes depending on customer requirements. For baking products, for example, an upward negative conical shape is recommended. Learn more about the different hopper shapes here.

Control system

Volumetric
- LOGO!
- Potentiometer (analog / digital)
- Frequency converter

Gravimetric
- Siemens FTC/FTA weighing electronics S7/HM

Gravimetric controls are equipped with hardware components from Siemens. Higher-level controls for multi-feeding or feeding applications in a process with several components are available. Various communication protocols allow the integration of the feeding units into existing systems.

Dust cover

Filter
Filters prevent dusty products from escaping when refilling the dosing hopper or vertical discharge pipes.

Suction
At the discharge pipe, dusty product can be sucked off and conveyed back to the feeding hopper

Ionization

To prevent static charge and adhesion of certain products to the walls of the containers or tubes, they are ionized during hopper refilling or discharge.

Scales

For the highest accuracy, choosing the right scale is crucial.

PFW/S Platform scales
Platform scales with standard Siemens strain gauge load cells up to 300 kg. For higher resolution, digital load cells can be used in conjunction with SIWAREX from Mettler-Toledo, as well as PESA. Platform scales are used for small to medium batching capacities.

Loss-in-weight scale with three load cells for larger feeding rates
The weight is recorded with three robust load cells. Loss-in-weight scales are used in the food industry and in the chemical industry.

Outlet pipe

Depending on the application and process requirements, vertical or horizontal discharge tubes can be mounted. The connection to customer systems can be adapted and prepared.

Enclosure

For special applications in the pharmaceutical industry drive and gearbox are completely enclosed and ventilated with compressed air.
Advantages:
- Easy cleaning
- No product or dust accumulation.

More options
  • Seals with purge gas connection
  • Dust tight +/- 50 mbar
  • Gas-tight
  • Flow inhibitor
  • Extension of discharge pipe and feeding tools
  • Counter bearing of the feeding tools
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