Rondella per vite di frizione
Rumtoo’s friction screw washer delivers high-speed scrubbing and continuous rinsing to strip dirt, paper, and fines from PET, HDPE, and film flakes—keeping your washing line clean and on pace.
- High-friction scrubbing
- Water injection + pneumatic screen cleaning
- Continuous inclined discharge
Inclined Scrubbing from Infeed to Discharge
Material enters the lower end of the inclined washer and rides up the screw via angular flights spinning at high rpm. This counterforce between material, screen cage, and paddles breaks down caked-on soil and paper while fines and water pass through the perforated housing.
- Vertical infeed keeps the line compact and reduces splash.
- Perforated stainless cage drains dirty water and fibres continuously.
- Clean flakes exit at the upper discharge, ready for hot washing or drying.
Inclined housing with stainless screen cage maximizes contact time and drainage.
Watch the Friction Washer in Action
See how high-speed scrubbing and continuous water sprays clean plastic flakes before hot washing.
Vantaggi principali
Engineered for heavy-duty washing lines that demand predictable cleanliness before hot wash or centrifuge stages.
Intensive Scrubbing
Angular flights and a high-speed shaft agitate flakes against each other and the screen surface to remove embedded soil.
Controlled Drainage
Perforated SUS304 screen cage lets water, fibres, and grit exit while the washer lifts clean flakes up the incline.
Self-Cleaning System
Water injection nozzles and a pneumatically actuated brush keep the screen cage clear without stopping production.
How the Friction Screw Washer Works
A three-stage process maximizes contact time, washing intensity, and drainage.
Contaminated flakes enter at the lower housing. Gravity and infeed paddles draw material into the screw flights.
Angular flights propel material upward against the perforated cage while fresh or recycled water sprays scrub the screen.
Water, fines, and paper pulp exit through the screen to the drain pipe; clean flakes leave through the upper outlet.
Design Details That Keep the Line Running
Every washer is mounted on an inclined frame with vertical infeed, ensuring a compact footprint and generous dwell time for scrubbing.
- Stainless screen cage surrounds the high-speed shaft and withstands abrasive flake streams.
- Water injection nozzles soak the cage continuously to prevent build-up.
- Pneumatically actuated mechanical cleaner wipes the screen from outside—no need to open the housing.
- Inclined transport ensures clean flakes exit at the top, ready for hot washing, flotation, or drying.
Why It Matters
- More effective removal of soil, paper pulp, and fibres before hot wash tanks.
- Less downtime thanks to automated screen cleaning.
- Lower water carry-over into downstream equipment.
Applicazioni
Use the friction screw washer for any heavily soiled plastic stream that requires mechanical scrubbing before separation or drying.
PET Bottle Flakes
Remove soil and paper labels before hot wash and caustic treatment.
HDPE / PP Rigids
Scrub residues from crates, drums, or injection parts prior to float separation.
Film & Agricultural Plastic
Loosen sticky soil and fibres before screw presses or friction dryers.
Standard Technical Parameters
All contact parts are manufactured in SUS304 stainless steel. Custom rotor diameters, frame angles, and drives are available.
| Modello | Motor power | Rotor diameter | Rotor speed |
|---|---|---|---|
| LX-400 | 11 kW | 400 mm | ≈520 RPM |
| Modello LX-450 | 15 kW | 450 mm | ≈520 RPM |
| Modello LX-550 | 22 kW | 500 mm | ≈520 RPM |
Need larger diameters, different spray manifolds, or integration with your water recycling loop? Rumtoo engineers can tailor the washer to match your line.
Operation & Maintenance Tips
Keep the washer performing at peak efficiency with these quick checklists.
Before Start-up
- Confirm water supply and spray nozzles are clear.
- Check the pneumatic cleaner cycle and air pressure.
- Inspect the screen cage for wear or loose fasteners.
During Operation
- Maintain steady feed to avoid overloading the screw.
- Monitor drainage flow; restricted flow indicates screen fouling.
- Use the mechanical cleaner proactively to prevent buildup.
Routine Care
- Lubricate bearings and inspect seals per the maintenance schedule.
- Check flight wear and replace paddles if scrubbing intensity drops.
- Flush housing and drain lines during scheduled shutdowns.
Why Choose Rumtoo’s Friction Washer
Compared with basic paddle washers or improvised scrubbers, Rumtoo’s design delivers cleaner flakes and less downtime.
| Aspect | Rumtoo Friction Screw Washer | Basic Washer / Manual Cleaning |
|---|---|---|
| Cleaning intensity | High rpm screw and sprays scrub stubborn soil and paper. | Limited agitation; heavy contamination remains. |
| Screen maintenance | Pneumatic cleaner and water jets prevent clogging. | Requires manual brushing and frequent stops. |
| Water management | Efficient drainage and sealed housing reduce splash. | Open housings spill water and carry dirt downstream. |
| Integration | Inclined design feeds directly into hot wash or separator. | Often needs additional conveyors or settling tanks. |
| Lifetime value | Heavy-duty SUS304 construction for continuous shifts. | Higher wear and inconsistent cleaning. |
Domande frequenti
How is a friction washer different from a sink-float tank?
A friction washer focuses on mechanical scrubbing to remove contamination. A sink-float tank separates plastics based on density. Most high-end lines use both: friction washer first to remove soil, then sink-float for separation.
How much water does it consume?
The washer recirculates spray water from the plant filtration loop. Actual consumption depends on contamination level, but the screened housing and drain piping make it easy to capture and reuse water.
Can it remove labels and adhesive?
Yes, it pulps paper labels and removes loose glue. For stubborn adhesives on PET bottles, pair the friction washer with a hot caustic washer downstream.
What maintenance does the screen cleaner need?
Only periodic inspection of pneumatic cylinders and cleaning arms. The automatic cycle reduces manual brushing and keeps the screen open.
Can Rumtoo integrate it into an existing line?
Absolutely. We provide layout drawings, elevated discharge connections, and control signals so the washer synchronizes with feeding conveyors, pumps, and downstream equipment.
Configure Your Friction Washer
Share your target throughput, plastic stream, and washing layout. Rumtoo engineers will recommend the right diameter, power, and spray system.
- 24/7 technical hotline and remote commissioning support
- Integrates with Rumtoo sorting, hot washing, and drying modules
- Global spare parts and on-site service network