- Improved design obsoletes moving canisters and minimizes moving parts.
- Continuous batch drying process.
- -40° dew point air is constantly bled into vacuum and retention hoppers.
- Vertical design minimizes footprint.
- No heat loss is guaranteed with 4″ double-insulation on all vessels.
- Reduced Maintenance – no desiccant to change – no filters to clean.
- Faster drying improves production planning.
- “No stress” material drying – means no material degradation.
- Process temperatures up to 350°F. (175°C)
- Vacuum take-off or gravity feed material discharge available.
- Backed by same 5-year warranty as all Maguire products.
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VBD-1000 installed on mezzanine |
How the VBD-1000 Dryer Works:
VBD Vacuum Dryers utilize a 3-stage continuous batch drying process |
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Stage 1: Material in the heating hopper is brought to set point by means of a centrifugal blower through a 40 Kw heating element. The requested heating temperature is adjusted on the control panel and the cycle lasts 45 minutes (60 minutes for PET). Stage 2: Upon reaching the desired set point, heated material is discharged from the heating hopper into the vacuum vessel. The vacuum is brought to 75mm Hg absolute pressure and held to a 20mm Hg differential for the set cycle time. The vacuum cycle typically lasts for about 20 minutes so you have ready-to-process material in 65 – 80 minutes.
Stage 3: The dried material is discharged into an insulated retention / take-off hopper for consumption. A positive pressure heated dry air purge is maintained on the material.
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VBD Controller
Simple is better – no confusing icons – only two screens to monitor
The controller is a Motorola micro-processor
- Four buttons provide access for setting operation mode, adjusting dryer parameters and many additional program functions.
- Alarms are shown on the display and signaled by an alarm light and horn with silence function.
- Reports can be generated via a USB port to either a memory stick or printer.
- Program updates via flash memory using a standard USB memory device.
Energy usage comparison with dual-desiccant bed dryer | ||
Dual Bed Dryer vs. Maguire VBD-1000 Vacuum Dryer | ||
Drying 1000 lb/hr (454 kg/hour) of nylon at 170°F ( 77°C): – Electrical consumption only – Compressed air generation electrical requirement for 9.8 SCFM TOTAL True Energy Consumption @ 170°F (77°C) |
Dual Bed watts/Kg/hr 81.8 81.8 |
VBD watts/Kg/hr 30.8 8.1 38.9 |
VBD ENERGY SAVINGS 53% | ||
Drying 1000 lb/hr (454 kg/hour) of Polycarbonate at 250°F ( 121°C): Dual Bed VBD |
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Total True Energy Consumption @ 250°F (121°C) | 120.3 | 53.4 |
VBD ENERGY SAVINGS 56% | ||
Note: “compressed air generation electrical requirement” is the amount |
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