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DISCHARGE SPOUT
The press cake emerges from the end of the screen through a discharge spout. If
a press tends to jam, it may be necessary to shorten this spout. Conversely, the
spout can be lengthened if the cake does not come out dry enough.
There is usually a bar, called a Spin Stop, welded inside this spout. This will
prevent cake from co-rotating with the screw. There is a tendency for this to
happen when the rotating cone feature is in service. In other cases, performance
with materials like corn silage is improved by removing this spin-stop.
SPIN STOP IN SPOUT
CONE BUSHING
The cone rides on the shaft of the screw. "Cone Sleeve" is the name given to the
portion of the screw on which the cone rides. There may be a bushing in the cone
to support and guide it, and to protect the Cone Sleeve journal surface of the screw
shaft. Sometimes the bushing is lubricated with liquid from the material being
pressed, such as the juice from apples or water from pectin peel.
Sometimes there is a grease fitting is provided for lubricating the bushing or to
minimize leakage of press liquor through the cone bushing.
Bushing lubrication is extremely important when materials that are dry (like paper
mill screen rejects) are being pressed. By the time such materials reach the
discharge of the press, they do not have enough free moisture left in them to
adequately lubricate the cone bushings. In these applications the operator should,
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