Page 2766 - Flipbook_SolidDesignSoutheast2020

CENTRIFUGAL IMPACT MILLS (PIN MILLS)

Grind friable materials, reduce flakes and de-lump agglomerates
into narrow particle size ranges without the use of screens

A simple, inexpensive means of Munson’s Pin Mill, or To vary the tight range of particle
grinding, sizing, de-agglomerating “Centrifugal Impact Mill,” sizes desired, the operator simply
adjusts the speed at which the
reduces bulk materials into
and/or homogenizing. Ideal for a broad narrow particle size ranges inner disc rotates, from several
range of food, chemical, pharmaceutical, without the need for screens, hundred to more than 5000
nutraceutical, mineral and agricultural hammers, knives or rolls. rpm depending on mill diameter.
This extreme flexibility enables
products––including pulverizing of insects, Instead, it relies on material a Munson Pin Mill, with no
eggs and larvae in flour applications––in impacting hundreds of pins modifications, to grind friable
materials into tight size ranges
tight size ranges from coarse to 400 mesh. thousands of times as it travels
from the center to the periphery from coarse particles down to
of the milling chamber. powders of 400 mesh, and to
de-lump agglomerated material.
The chamber consists of an
outer stationary (stator) disc Materials remain cooler than
containing circular rows of pins in other types of mills since
that alternate with concentric retention is minimal and air is
rows of pins on the inner constantly drawn through the
rotating (runner) disc. mill chamber.

As metered material is gravity The Munson Pin Mill features
fed through the centrally smooth interior surfaces with
located inlet of the stator disc, none of the crevices associated
centrifugal force created by with screens, hammers, knives or
the high speed runner disc rolls, and vertically-oriented outer
accelerates material causing discs with hinges for greater
particles to alternately impact interior access than horizontal
the stationary pins and rotating mill housings, allowing total
In addition to a removable outer disc, the inner rotating disc of
this pharmaceutical-grade model CIM-18-S316 is also removable, pins before reaching the outlet. gravity discharge/draining and
providing full access to both sides of both discs rapid cleaning/sanitizing.
and the mill housing for thorough
cleaning and sanitizing. It is also compact and economical
relative to its high capacity, and is
virtually maintenance-free.

Available in carbon steel, and
stainless steel to industrial
or sanitary/pharmaceutical
standards, it is offered with
discs in diameters of 8, 18, 24
and 34 in. (203, 457, 610 and
864 mm) and motors from
5 to 125 hp (4 to 93 kw) to
process <.25 to 5 ft (<7 to 143
liters) of material per minute,
depending on application.

The rotating disc of this 24 inch (610 mm) diameter Pin Mill model CIM-24-SS
rides on oversized pillow-block bearings and is driven by a 30 to 60 hp (22 to
45 kw) motor with V-belt/sheave arrangement, delivering high throughput per
hp/kw compared with machines employing screens, hammers, knives or rolls.

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