evomix DF: Potting of dialysis filters
High precision and reliability for potting of two-part polyurethane
The production of medical devices always requires particularly high levels of care and accuracy. The production process for dialysis filters is no different. The filters contain a membrane with thousands of hollow fibers, which must be effectively secured in place to allow blood flow in and out of the membrane.
DOPAG has developed a special metering and mixing system for this task: high precision and reliability make the evomix DF system a perfect solution for potting of components with two-part polyurethane. The system is characterised by an interruption-free, continuous supply of material and can be integrated into a fully automated production line. The mixing head of the evomix DF is certified for use in cleanrooms.
Technical specifications
| evomix DF | |
| Material discharge | 100 ml - 900 ml / min, depending on mixing ratio and viscosity |
| Mixing ratio | 100 : 20 - 100:80, volumetric |
| Working pressure | 100 bar max. |
| Mixing system | Static-dynamic: 2K valve / Plastic mixer tube |
| Material supply | 90 and 120 l material pressure vessels |
| Viskosity range | 50 - 80.000 mPas, with material pressure vessels |
| Material characteristics | Unfilled, filled, abrasive |
| Power supply | 400/230 VAC 3/N/PE / 50/60 Hz |
| Maximum air inlet pressure | 6 bar max. |
| Dimensions, W x H x D | from 1.250 x 2.050 x 2.600 mm |
| Weight | from 1.500 kg |
Standard
- Welded frame
- 120 l stainless steel material pressure vessels
- Material pressure vessels with:
- Level control
- Automatic refilling
- Automatic degassing
- Gear metering pumps with with overpressure protection
- Pump drive mechanism: Three-phase asynchronous motors
- Control or regulation of mixing ratio and discharge rate with
flowmeters - Static-dynamic mixing system
- 2K valve with separate material supply
- static mixer tube, plastic
- Automatic cycle
- Metering computer with realtime multitasking operating
system (64 metering programmes storage capacity) - 7“ colour touch screen terminal
Optional
- Refilling pumps
- 90 l stainless steel material pressure vessels
- Material pressure vessels with:
- Agitation
- Thin film degassing
- Nitrogen flushing
- Membrane pump on pressure vessel outlet
- Pump drive mechanism: Servomotors
- Additional wear protection on gear pumps
- Gear pump with magnetic coupling
- Mixer element fault monitoring
- Heating
- Temperature measurement directly in material flow
- Stainless steel wetted parts
- 9“ colour touch screen terminal
- Profibus/Profinet interface
- Twin model with two metering and mixing systems