MERRICK 100 VOLUMERIK Series, Инструкция по эксплуатации и техническому обслуживанию

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3.0 FEEDER DESCRIPTION
The Series 100 Volumerik
®
feeder is a rugged screw feeder that utilizes a single auger to
meter powder or pellets to a process. The feeder is available in three sizes: 100-V1
(0.38”-1.25” diameter augers), 100-V2 (1.5”-3.0” diameter augers) and 100-V3 (3.5”-6”
diameter augers). Construction is all stainless steel and is available in 304 or 316. The
V1 is supplied standard with a 1.0 ft
3
hopper. The V2 is supplied standard with a 5.0 ft
3
hopper. The V3 is supplied standard with a 15.0 ft
3
hopper. Extension hoppers are
available for all three models.
3.1 Drive System
a. The Series 100 utilizes a unique, low maintenance drive configuration.
A high quality, quill output type gear reducer is used to direct drive the
auger. This eliminates the need for pulleys, belts, couplings and flanged
bearings to support and drive the auger. The bearings internal to the
gear reducer provide the auger support. The result is a feeder with only
one external moving part: the auger. Fewer moving parts means lower
maintenance and higher reliability.
b. Power is supplied standard with a high efficiency PWM (Pulse Width
Modulated) rated DC motor. When used in conjunction with a PWM
rated drive, the higher efficiency reduces horse power lost to heat,
thereby, permitting the use of smaller motors for horse power
requirements. The smooth wave form generated by the PWM drive
greatly extends brush life.
3.2 Metering System
a. The Series 100 utilizes a unique AUGER configuration. The AUGER is
supplied in two sections. The drive end, called the STUB, extends
through the reducer quill, through the powder isolation seal and into
approximately half the length of the feeder body. The STUB never has
to be removed unless damaged. The STUB has an auger flight wound
around the outside diameter to move the material forward toward the
AUGER. The STUB also drives an OVERWIND that is welded to the
STUB. The OVERWIND, a concentric helix, acts as a bridge breaker or
agitator for feeding difficult to handle powders. The AUGER attaches
to the STUB via a left hand threaded stud. Since the OVERWIND is
attached only to the STUB, the AUGER design is simple, low cost and
easily replaceable for feeding various powders. The AUGER and
STUB may be supplied with non-stick coatings when difficult to feed
powders are metered. For some high density feed materials, the
overwind material conditioner is not used and is omitted from the
STUB. In these cases. a virbrator with timed cycle control is used the
condition the material.