Silo Unloading System - .Silo Diameters 10' - 30' Keystone’s Silo Unloader uses a Primary and Secondary

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Silo Diameters 10' - 30'

Keystones Silo Unloader uses a Primary and Secondary Sweep Auger that under-cuts two separate areas in the bottom of the Silo. This design provides excellent downward inter-particle movement that results in more uniformly blended mate-rial when unloaded. Keystones Free Flow Control System eliminates Free Flow by putting sweep augers in charge of unload-ing all the material from the silo. The volumetric capacity of the Sweep Augers is designed to meet the required unload-ing rate. The combined effect of these two features develops more consistent flow patterns in Silos resulting in truer first in first out delivery of quality materials. And further, these features will greatly mini-mize age old Silo Material Bridging prob-lems. Keystone builds their Silo Unloaders wherever possible with Standard Industrial Componenents. In addition, Standard Maintenance of all moving unloader parts can be done from OUTSIDE the silo mate-rial storage area.

Silo Unloading System

KEYSTONE

K

Discharge Metering Screw (optional)4 min

DischargeHopper(optional)

Discharge Conveyor (optional)

Transition(optional)

Transition

Sweep Auger Drive MotorBelt Drive

SweepAugerChainDrive

Silo Control Room

Silo Reclaim Floor

Primary Sweep Auger

with Cutter Knives

Secondary Sweep Auger

with Cutter Knives

Sweep AugerRotation Drive

7 min.

DischargeHopper(optional)

Transition(optional)

Sweep Auger Drive Motor

Belt Drive

Silo Control Room

Silo Reclaim Floor

Primary Sweep Auger

with Cutter Knives

Secondary Sweep Auger

with Cutter Knives

Discharge Metering Screw(optional)

Sweep AugerRotation

Drive

7 min.

4 min.

ReclaimerDome

KEYSTONE

K

Keystone Top-Mount Direct Drive 400 Series Industrial Silo Unloader

Keystone Chain Drive 300 Series Industrial Silo Unloader

Silo Unloading THE KEYSTONE WAY

Keystones Gear Boxes are a result of years of research and development. They have an outstanding design and are built with state of the art manufacturing machinery by workmen with many years of experi-ence. Keystones Gear Boxes are engineered and built with precision and close tolerances to perform reli-ably and quietly in rugged applications and conditions. All gear box housings are built with high tensile duc-tile iron and are available in a multiple range of ratios. Output shaft configurations can be custom designed and built for site specific applications. Synthetic oil is used to provide maximum protection and performance under the most demanding conditions.

Silos Since 1901 Silo Unloaders Since 1963

In the early 60s, Keystone designed and built agricultural Silo Unloaders for their farm silo customers. As this busi-ness grew, Keystone started receiving calls for Industrial Silo Unloaders.

Keystones Industrial Silo Sys-tem offers a practical design that is rugged, reliable, has easy access for maintenance and can be fully automated and integrated to work with other plant systems.

Keystones Unloader System offers the following important features: Automatically and Reliably Unload Hard to Handle Bulk Materials from Silos High delivery rates 24/7. First In First Out for excellent control of Bulk Material Inventory Keep Bulk Material blended and homogenized for consistent Product quality Bulk Materials are safely kept from contamination (mold, insects, birds, rodents) Excellent control of air quality and emissions (dust, etc) Large savings over cost of loaders and labor (plus minimizing safety issues) Save valuable plant site area by storing Bulk Materials vertically in Silos All normal maintenance of Keystone Silo Unloaders is done outside the confined space of your Silo Keystone offers a wide range of options for Site Specific applications Keystone is well qualified with many years of Hands-On-Field Experience to customize your plants

needs or requirements

The information contained herein is general in nature and is drawn from sources deemed to be reasonably reliable. Any application to a particular operation requires the advice of qualified experts and is subject to limitations of good management, weather and other conditions present at the individual location. Keystone Silo Systems assumes no responsibility whatsoever for the design or integrity of any structure or plant its equipment is installed or operated in. The liability of such structure or plant is the exclusive responsibility of the operator and or owner. This also applies to any and all operations of Keystone Silo Systems beyond their intended use and warranty limitations. Company reserves the right to change specifications and designs without notice. This literature cancels and supercedes all previous literature on this subject.

Catalog No. KSS-1112 Copyright 2011 Printed in USA

P: 1-941-750-6156C: 1-717-507-2235

www.keystonesilos.comsales@keystonesilos.com

6156 9th Avenue Circle NE, Bradenton, FL 34212

Keystone Silo Systems Dealer:

SILO SYSTEMS, INC

Keystone Silo Unloader SystemKeystone Silo Unloader System