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Simplified outlet device that combines the bottom cover with the bearing housing.
English (United States)
This text was extracted from a Microsoft Word document.
100% of the total text.
NextGenC Outlet Device
The NextGenC Outlet Device simplifies the design by
combining the Bottom Cover with the bearing housing. It also eliminates two whole packboxes, by adding dilution higher
in the shaft. New machines will be 100%
fabricated or machined, eliminating the long lead time for new patterns.
The integral Bottom Cover and Bearing Housing simplifies the
design, eliminates a bolted connection, allows for a shorter more compact
design and involves less machining.
Relocating the dilution to above the conventional upper packbox location
eliminates the need for two lower packboxes on either side of the old dilution
header. This has a huge maintenance
advantage, as one will only need 33% of the spare parts, and PM time for
packing. The redesigned shaft, with
dilution holes near the submerged end also benefits from less machining as the
trepanned hole is now only ~40” deep.
Other improvements include reducing the outlet nozzles from
(2) to (1). A single pulp discharge
nozzle will be tangential and relocated to the lower nozzle of the bottom head
of the Digester. In the single packbox
design we have increased the space required for packing maintenance. It will also be less expensive and easier to
rebuild with only one packing sleeve.
We have also standardized on a Hagglunds hydraulic drive. Hydraulic drives are known for their
reliability, high torque values and resulting lower maintenance costs. Hagglunds new compact spline design will be
used in this application.