dust free system


Dust-free system for filling powder in industrial processes without releasing dust.

The flexible silicone cap provides flexible connection of a telescopic tube and ensures dust-free connection as soon as the telescopic tube is introduced into the silicone cap.

The silicone cap fits on every Müller system tube or flange. All openings can thus be safely closed with a silicone cap or with a cover clamping ring connection after the filling process.

The Müller dust-free system can be combined with other Müller products and integrated at moderate costs in existing plants.




Traits


  • powder transfer without releasing dust
  • safe handling and easy coupling with telescopic tube
  • easy to clean
  • economical and cost effective
  • the modular Müller system offers a solution for every filling task
  • nominal diameters in DN120, 170, 250, 315 and 400
  • suitable for steam sterilization up to 135°C and hot air up to 200°C
  • can be used in the ATEX area
  • silicone cap food-safe, approved according to FDA 177.2600 and USP VI. Further materials and electrically conductive available on request
  • product-contacted parts out of stainless steel, Ra < 0,6.



Usage


Powder handling OEB Level 1+2

Standard version

  • Simple docking
  • Accurate positioning not necessary
  • Key to sketch:
    • A - product
    • B - into machine
    • C - silicone elastomer cap
    • D - system inlet tube / cone
    • E - lip seal

Version with hopper pressed against lip seal

  • Simple docking if system becomes slightly pressurized
  • Key to sketch: 
    • A - product
    • B - into machine
    • C - silicone elastomer cap
    • D - system inlet tube / cone
    • E - lip seal pressed down

Telescopic version

  • Simple docking with telescopic intermediate tube
  • Key to sketch: 
    • A - product
    • B - into machine
    • C - silicone elastomer cap
    • D - system inlet tube / cone
    • E - lip seal
    • F - telescopic intermediate tube

Charging a reactor

  • Key to sketch: 
    • A - drum
    • B - hopper
    • C - inlet elbow
    • D - lift / swivel / invert column
    • E - lip seal pressed down

Feeding a tablet press

  • Key to sketch: 
    • A - drum
    • B - hopper
    • C - nest
    • D - supporting column
    • E - lip seal
    • F - tablet press
    • G - mobile lifting and inverting unit
    • H - variant with dust extraction connection

Charging / discharging a twin-shell tumbler

  • Key to sketch: 
    • A - drum
    • B - hopper
    • C - inlet elbow
    • D - lift / swivel / invert column
    • E - lip seal
    • F - twin-shell tumbler
    • G - drum truck
    • H - centering guide
    • J - Type MC butterfly valve
    • K - drum lid with filling opening: 
      • K1 - Filling drum:
        • lid placed over drum
      • K2 - Removing drum:
        • lid retracted on discharge nozzle

Charging / discharging a mill

  • Key to sketch: 
    • A - drum
    • B - hopper
    • C - nest
    • D - supporting column
    • E - telescopic intermediate tube
    • F - mill
    • G - drum truck
    • H - drum lid with filling opening: 
      • H1 - Filling drum:
        • lid placed over drum
      • H2 - Removing drum:
        • lid retracted on discharge nozzle
    • J - Nest swivels aside

Charging through a floor

  • Key to sketch: 
    • A - hopper bin
    • B - carriage
    • C - Type MC butterfly valve
    • D - distribution manifold
    • E - Charging sequence: 
      • Step 1
        • Move hopper bin over charging opening
      • Step 2
        • Docking with telescopic intermediate tube
      • Step 3
        • Telescopic intermediate tube retracted
      • Step 4
        • Opening covered




Attachments


Silicone cap

  • fits on the flange rings, inlet parts and individual components specially developed for this purpose
  • guarantees a dust-free filling operation
  • can be cleaned with all usual detergents, even those containing alcohol
  • highly wear-resistant. 

Circular cutter

  • for cutting the inlet opening in the silicone cap
  • one circular cutter for all diameters

System tube (flange ring)

  • can be welded, flanged or otherwise mounted on the machine inlet
  • surface ground and brushed inside and outside, flange welded
  • standard height 50mm
  • diameter in DN120, 170, 250, 315 and 400

Telescopic tube

  • allows docking on a dust-free sleeve without lifting movement of the container or of the nozzle
  • with handles for easy handling

Falling tubes

  • system tubes suitable for every usual machine inlet
  • standard length 500mm
  • the edge of the falling tubes corresponds to the flange ring dimensions
  • also available with enlarged inlet

Reducing fittings

• this system serves for joining the hopper outlet and the machine inlet
• available in 60° or 90°


Inlet units

  • they consist of centering bridge, silicone cap, reducing fitting, falling tube, shut-off device and fastening elements, as well as flanges
  • the fastening elements are adapted to the machine
  • the inlet unit can easily and quickly fitted on angled, straight, oval or round inlets

Centering bridge

  • for pinpointed, reliable guidance of the hopper outlet nozzle into the inlet opening

Filling lid

  • is attached to the machine outlet with the support brackets
  • for filling, the open drum is pushed under the filling lid, and the lid is lowered manually on the drum
  • the filling operation can start immediately and the expelled air can easily escape via the venting tube equipped with a filter cloth
  • with optional sight glass to be able to monitor the operation at any time

Suction ring

  • the mobile suction ring is simply pushed on the drum to be filled
  • the suction ring height can be exactly adjusted to drum height
  • a slot in the periphery of the suction ring then allows efficient dust extraction
  • easy to disassemble and thus very easy to clean
  • can be connected to the central extraction system or to any industrial vacuum cleaner

Suction hood

The critical moment – in terms of dust exposure – is when decoupling the silicone cap and the telescopic tube. At tis time, powder residues can escape in the environment.

  • vacuums the dusts where they are produced
  • contributes to the complete elimination of visible dust residues that deposit outside of the plant




Handling


Dust-free filling

  • the filling lid is simply, safely and quickly attached to the machine outlet with the support brackets
  • for filling, the open drum is pushed under the filling lid, which is then manually lowered onto the drum and secured with the drum clamping ring. The filling operation can start immediately.
  • no pressure is generated in the drum during filling, as the air can easily escape via the venting tube equipped with a filter cloth. 
  • using in addition the suction hood allows further reduction of the residual dust formation
  • solutions for open filling are available for filling or emptying operations that cannot be performed in a closed system

Functioning of the telescopic tube

  • the telescopic tube or the nozzle plunges into the opening of the silicone cap. As soon as the tube has entered the cap, an absolutely dust-free connection is established
  • also slight pressure differences are possible thanks to an appropriate design

  • after nozzle removal, the remaining inlet opening can be sealed dust-free with a silicone cap without opening or with a clamping rig lid