Mixing/extruding apparatus and start-up method for mixing/extruding apparatus

Patent metadata

Field	Value
Publication number	US-9346208-B2
Application number	US-201213526879-A
Country	US
Kind code	B2
Filing date	Jun 19, 2012
Priority date	Jul 12, 2011
Publication date	May 24, 2016
Grant date	May 24, 2016

Abstract

A mixing/extruding apparatus having a mixer/extruder provided with a diverter, an electric motor for driving this mixer/extruder, and a power supply device for supplying a drive power to this electric motor, and the power supply device includes a start-up power supply portion for supplying a drive power with which the electric motor is rotated at low speed with a smaller output than an output generated upon the normal operation to the electric motor, an operation power supply portion for supplying a drive power with which the electric motor is rotated at high speed with the output generated upon the normal operation to the electric motor, and a power supply switching device for switching the drive power from the start-up power supply portion to be supplied to the electric motor to the drive power from the operation power supply portion.

First claim

What is claimed is:

1. A mixing/extruding apparatus, having:
a mixer/extruder comprising a charging portion positioned to charge a material to be mixed into the mixer/extruder, a mixing element movable to mix the charged material, a die positioned to extrude the mixed material, and a diverter configured and positioned to divert the mixed material from the die before the mixed material reaches the die;
an electric motor for driving the mixing element of said mixer/extruder; and
a power supply device for supplying a drive power to said electric motor, wherein
said power supply device includes:
a start-up power supply portion for supplying a variable drive power while the diverter is open, with which said electric motor is rotated at low speed with a smaller output than an output generated upon a normal operation to said electric motor;
an operation power supply portion provided in parallel with said start-up power supply portion for supplying a constant drive power with which said electric motor is rotated at high speed with the output generated upon the normal operation to said electric motor; and
a power supply switching device for switching the drive power from the start-up power supply portion to be supplied to said electric motor to the drive power from the operation power supply portion.

2. The mixing/extruding apparatus according to claim 1 , wherein
said start-up power supply portion is a power supply for supplying a drive power with which a maximum output of said electric motor becomes 60% or less of a rated output to said electric motor.

3. The mixing/extruding apparatus according to claim 2 , wherein
the power supply includes a transformer, and a variable-voltage and variable-frequency power supply device.

Assignees

• Hotani Shin
• Nagaoka Tatsuto
• Hatanaka Takeshi
• Kobe Steel Ltd

Inventors

• Hotani Shin
• Nagaoka Tatsuto
• Hatanaka Takeshi

Classifications

• B29C2948/92542

  Energy, power, electric current or voltage · CPC title

• B29C48/252

  Drive or actuation means; Transmission means; Screw supporting means · CPC title

• B29C48/0022

  combined with cutting · CPC title

• B29C48/04 Primary

  Particle-shaped (making granules B29B9/00) · CPC title

• B29B9/065

  under-water, e.g. underwater pelletizers · CPC title