Loris Bellini
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ARSPO – ARSPV High efficiency pressure dryer

ARSPO and ARSPV are fully-automatic yarn package dryers at high pressure (5 Bar) conceived for direct loading of dyeing carriers coming directly from dyeing machines.
Bellini high-pressure dryers do not require a centrifugal hydroextraction.
They are normally used for drying all possible kinds of yarns without limitations in:
Fibre composition Yarn package type and size. Yarns can be cotton, acrylic, wool, polyester, rayon and blends in form of packages (cylindrical, conical, biconical, compressible).

HIGH DRYING PERFORMANCE

ARSPO and ARSPV pressure dryers are rated for operation at HIGH STATIC PRESSURE OF 5.0 KG/CM2 in order to increase specific weight of drying air, therefore conveying a larger quantity of heat for evaporating water from the yarn under process.

OPERATION IS PERFORMED IN CLOSED AIR CIRCUIT consisting of:

  • Autoclave designed to receive the modular yarn package carrier (s).
  • High-efficiency centrifugal blower.
  • Automatic air flow direction reversal group.
  • Centrifugal water drop separator.
  • Indirect air heating battery.
  • Indirect air cooling battery for water condensation by large contact surface.
  • Electric control panel with PC for fully automatic operation

The complete drying operation is developed in three sequences that are performed automatically:

1 – HYDROEXTRACTION
2 – DRYING
3 – YARN CONDITIONING

AUTOMATIC MOISTURE CONTROL SYSTEM.

The pressure dryer is equipped with a proprietary residual moisture control system. which measures the amount of water drained from the cooling battery and automatically stops the drying cycle when the programmed weight is attained. The system permits to control the yarn residual moisture accurately and to optimize drying conditions to prevent overdrying.

SPECIAL CENTRIFUGAL AIR BLOWER

The ARSPV dryer is operated by a centrifugal blower completely made of AISI 316 stainless steel and designed for high values of head pressure and airflow delivery. Motor is installed coaxially to the blower and is of high power factor to limit the power consumption. The blower is equipped with maintenance-free mechanical seals of radial type. Blower is not stopped during carrier unloading and loading phase, in order to avoid heavy power consumption, peaks of absorbed power and rapid motor wear connected to intermittent delta-star restarting.

ENERGY EFFICIENCY

Loris Bellini pressure dryers are engineered for maximum energy efficiency. More than 90% of overall energy consumption, as calories consumed in heating fluid and electric power, is recovered as clean hot water to be collected and reused as process water for the dyeing process.