- 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 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.
How the VBD-150 Dryer Works: VBD Vacuum Dryers utilize a 3-stage continuous batch drying process
Stage 1: Material in the heating hopper is brought to set point by means of a centrifugal blower through a heating element. The requested heating temperature is adjusted on the control panel. 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 700mm Hg and held to a 20mm Hg differential for the set cycle time. The vacuum cycle typically lasts about 15 – 20 minutes so you have ready-to-process material in 30 – 40 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 ControllerSimple is better – no confusing icons – only two screens to monitor The controller is a Motorola micro-processor |
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Vacuum Generator:
Alarm Light |
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Heating Hopper: Insulated stainless steel hopper for drying temperatures up to 350°F (175°C). |
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Coalescing Filters: Dry Air Membrane: |
Insulated Vacuum Vessel |
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Insulated Retention Hopper for dried material. |
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Material takeoff | |||
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 81.881.8 |
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 of electrical energy required to make the amount of compressed air that the unit consumes. It is based on 4 SCFM requiring 1.0 HP, and 1.0 HP being 746 watts of power. |
Model | VBD-150 | ![]() |
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U.S. | Metric | ||
Maximum Throughput | up to 150 lb./hr. | up to 68 Kg | |
Heating Hopper Volume | 2 ft3 (average 76 lbs) | 56 L (average. 35 Kg ) | |
Vacuum Chamber Volume | 1 ft3 (average 38 lbs) | 28 L (average 17.3 Kg) | |
Retention Hopper Volume | 1.3 ft3 (average 50 lbs) | 37 L (average 22.5 Kg) | |
Max. Temperature | 370°F | 185°C | |
Power Supply | 480V/3ph/60Hz 20 amp service |
400V/3ph/50Hz 20 amp service |
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Process Heater | 6 KW | 6 KW | |
Blower | 1.1 HP, 105 scfm | .82 KW, 2973 L/min | |
Compressed Air Pressure | 85 psi | 5.8 bar | |
Compressed Air Usage | 12.5 ft3/hr. | 354 L/hr | |
Product Weight | 501 lb. | 228 Kg |
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