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GENERAL DESCRIPTION

PurgePac® 1000 is a vertical detrasher especially designed to further process overflow stock from the pulper. It reduces contraries buildup in the pulper, thus increasing production rate of pulping process.

The PurgePac® 1000 is also designed to overcome the problems inherent to other designs, like difficulties in feeding, heavies damaging the rotor and body, low defibering, small operating volume, etc.

Overflow stock from the pulper enters tangentially in the vortex direction of the tub. Detrashing is controlled by timer and air-operated valves for automatic filling, stock extraction and reject removal.

A reject outlet is provided within the tub, and can be optionally fitted with an automatic junk trap.

The PurgePac® 1000 uses ESID® (Energy Saving Intensity Defibering) type rotor.

The accept stock passes through small holes of the perforated plate and recover the same quality of pulp extracted from the main pulper bedplate.

Reject stock leaves the PurgePac® 1000 from the cover of the tub to benefit from the centrifugal forces created by the ESID® rotor.

An extraction pump (customer supply) controls and creates the flow pattern from the pulper to the PurgePac® 1000 extraction. The accept stock of the PurgePac® 1000 is fed to the suction pipe of the pulper extraction pump to offer the flexibility required to operate such system.

With these features, the PurgePac® 1000 can process pulp and plastics from the pulper tub which are accumulated at about 2 - 3 times within the pulper per hour.

Tub

The body is made either of stainless steel or of cast iron lined with high technology ceramics. Its slightly conical shape improves vortex free circulation. The body supports all the flanges necessary for feed and discharge flows.

A cone cast inside the cover helps the flow pattern to stay in a controlled vortex-shaped.

The tub cover is made of mild steel with stainless steel cladding.

The main body of PurgePac® 1000 is bolted to the machine base for rigid support

The extraction chamber is raised from the bottom of the tub to protect the rotor against heavy materials that will inevitably get inside the PurgePac® during operation. This reduces contact with the contraries, increasing both rotor and bedplate life.

An annular perforated extraction plate (the bedplate) is bolted to the top of the extraction chamber to facilitate easy extraction of accept stock from the PurgePac®.

The bedplate could be made of different steel materials depending upon the specific operational requirements.

A high technology dry packing gland based on the use of mechanical sealing compound TomPac® is used in the packing chamber. Based on non-compression technology, this special packing provides better sealing than the conventional braid packing usually supplied.