Dusty powders in free-fall pipes
These automatic, discontinuously cleaning, dust-proof Cleanflows are especially suitable for dusty powders with a small amount of ferrous impurities.
Also suitable for non-dusty powders & granulates, but NOT for sticky powders that cause blockages. For those applications the rotating versions of this type Cleanflows are a better solution.
The automatic cleaning makes them suitable for badly accessible situations.
Construction & materials data
Click on a product variant to find the data sheet, drawings and other downloadable product information.
Summary of important specifications
- 2 Magnetic grids with Ø25 magnetic bars, placed staggered one above the other.
- Pneumatic bar and valve movement.
- Magnet quality: neodymium N-42, 11,000 gauss on the tube.
- Dust-proof housing.
- Material housing: AISI304 / AISI316(L).
- Finish: grit blasting.
- Material gaskets/seals: Silicone EC1935 / FDA.
Available accessories & options
Online available accessories & spare parts
Click on a product variant to find the online available accessories & spare parts.
- Integrated valve box for ferrous particles disposal
(our advice: always order with corresponding valve box for trouble-free operation)
- Iron discharge cycle control:
- Pneumatic control -> start by local push button
- Siemens LOGO! PLC control -> start by local push button or from control room
Filtering & discharging of ferrous contaminants
How does the magnetic filtering work?
Each magnetic bar has a magnet package that pneumatically moves inside a closed tube, this way automatically discharging trapped ferrous particles.
After you have stopped the product flow and have given the start signal for cleaning to the control, air pressure automatically pushes the magnets out within their enclosing tubes.
The moving magnets in the tubes pull the captured ferrous particles along outside. However, they are stopped by a plate halfway the tube length. As soon as the magnets have traveled completely out, the captured particles drop off the tubes, into the iron discharge chute, where you collect and further discharge them.
Cleaning / iron discharging sequence
- Stop the product stream.
- Give start signal to the magnet's control unit.
- Now first the valve in the valve box is automatically switched to iron discharge position.
- Then the magnets inside the pneumatic tubes are moved automatically out of the product channel.
The captured metal particles want to 'travel' with the magnets, but are held by retainer rings on the magnet bar tubes. As soon as the magnets are out of reach, the captured particles automatically drop off of the tubes, into the valve box, where they are discharged further.
- Then the magnets inside the pneumatic tubes are moved automatically back into the product channel.
- When the magnets are all back in, the valve will automatically be switched back to its production position.
- As soon as the magnets and valve are back in production position, the control will give a 'ready for production' signal.
- You can now safely resume production.