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SPECIFICATION GUIDE
GEMCO ACCESSORIES
Agitators |
Gemco Agitators
Many blenders utilize internal agitators to enhance the mixing process. Various types are manufactured for specific
purposes. Gemco's agitator designs offer the highest degree of effectiveness. Blending is enhanced in any shape
vessel with an internal agitator installed. The agitator provides the ability to de-lump, disperse minute quantities
of dry or liquid materials, and blend large batches very rapidly.
Gemco cantilever agitators are designed to withstand material impact. The assembly features an agitator disc
and dispersion blade combination that is sized according to vessel size and application.
Gemco provides
- Agitator tip speeds up to 5,000 ft./min. or more without excessive heat build-up
- Full ball bearing support
- Agitator seal life of up to 500+ hours
- Gemco can design multiple liquid injection of separate liquids
Gemco Agitators Are Available In Four Types
- Slow Speed - 1650 feet per minute
- High Speed - 3,300 feet per minute
- Ultra High Speed - up to 5,000 feet per minute
- Liquid Solids
Slow Speed
Improved blending without attrition can be accomplished by using the Slow Speed agitator. Long, slow moving agitator
blades allow load level variation and reduced seal wear. Suitable for breaking down soft lumps and blending minor
additives, it can also be used for de-lumping. Typical blade tip speed is 1700 feet per minute. This design typically
does not require a vented cover.
High Speed
Suitable for pigment and difficult dispersions as well as breaking down lumps, densifying and intimate blending
of minute additives. Typical blade tip speed is anywhere from 1,650 to 3,300 feet per minute. This option normally
requires a vented access cover.
The vented cover relieves any pressure that is created by the High Speed agitator. Without this, the pressure
can push powder into the seal area prematurely and cause seal failure.
Ultra High Speed
Gemco's Ultra-High Speed Agitator can be operated for longer periods of time as the extended blades allow for
high tip speed without generating excessive heat at the shaft area. Blade tip speed is up to 5,000 feet per minute.
Used for high intensity blending, the Ultra High Speed allows rapid blending of large batches. It's also used
for pigment blending, it eliminates streaking and a final milling operation in many applications. This option normally
requires a vented access cover.
The Sanitary Blade and Disc Option
The Sanitary Agitator-Blade and Disc is a one-piece design that allows for faster and easier cleaning. For those
industries where cross contamination and bacterial growth cannot be tolerated, this construction is invaluable.
Gemco's Sanitary design improves productivity and reduces labor. With this one-piece system, the costly and non-productive
time required to disassemble the individual blades, washers, nuts and bolts (32 to 64 individual components in conventional
agitators) is eliminated. This eliminates final screening of product due to missing blades, nuts and bolts. Also,
this design eliminates crevices where product can get caught.
DRYER OPTIONS
Heating/Cooling System
Gemco's Heating/Cooling System is a closed-loop design. Depending on the temperature required, either water based
or oil based thermal media is used. Since the system is a closed-loop, additives such as rust inhibitors can be
added and maintained to prolong the life of the vessel. An expansion tank is provided to minimize the need for make-up
heating media.
By using the recirculating closed-loop design, heat up and cool down are accomplished gradually, eliminating thermal
stress on the vessel. When both heating and cooling are required, Gemco uses a parallel configuration to minimize
pressure drop and chances of vapor lock.
The components present
in a Gemco Heating/Cooling System include:
- Circulation pump
- Heat exchanger (for steam power systems) or electric heaters
- Cooling exchanger (if cooling is needed)
- All necessary valves and piping
- Temperature controller
Access Cover
Solids Cover
This is our standard cover and is available in a wide variety of sizes, materials and finishes to suit your application.
Vented Cover
The vented cover relieves any pressure that is created by the High-Speed and Ultra High-Speed agitator. Without
this, the pressure can push powder into the seal area prematurely and cause seal failure. Gemco offers a variety
of sizes, materials, finishes and filter media to suit your application.
Cover Valve
This option provides a Gemco cover valve. This cover replaces the standard access cover and allows discharge
of product through the opposite end of the blender. This option is not available on V-Shaped Vessels.
Safety Interlock
This cover option provides a pneumatic safety circuit and associated hardware to interlock with the operation
(rotation) of the vessel. Access cover(s) are fitted with tabs to trip pneumatic cam valves. Removal of cover(s)
will lock out the electrical circuit of the vessel to avoid accidental rotation of equipment.
Sample Port
This option provides a 316 stainless steel sample valve in the access cover which allows a product sample to
be taken without opening the access cover.
Vac-U-Max
This option provides a cover with Vac-u-Max connections for pneumatic conveying.
Control Panel Options
Gemco control panels are available in four (4) NEMA ratings and two (2) types of configurations. They are as
follows:
Basic Control Panel
This control panel consists of:
- "Start-Jog-Stop" control for the main drive
- "Start-Stop" for the agitator drive (when applicable)
- "Emergency Stop" mushroom-style push button
- Quick-disconnects (supplied loose with NEMA 7 panels)
- Step-down transformer
- Starters
- Over-load heaters
- Fuse block
Deluxe Control Panel
This control panel consists of:
- All motor starters, fuse blocks, and terminal strips
- Control voltage transformer
- Running lights on the front of the panel
- "Emergency stop" mushroom-style push button
- Main quick-disconnect
- "Start-Jog-Stop" control for the main drive
- "Start-Stop" for the agitator drive (when applicable)
- 0 to 60-minute auto-reset analog timer for blend
- 0 to 60 minute auto-reset analog timer for agitator (when applicable)
- Complete control panel is of dedicated design specifically engineered to the unit as ordered,
including all necessary safety solenoid interlocks, with air circuitry and operational sequencing as needed.
This is not a standard buy- out, bolt-on unit.
Complete Assembly includes:
Necessary solenoids, pressure switches, etc. packaged and wired in flexible conduit to motor drives. Fully pre-tested
and supplied loose for on- site installation.
Junction Box
To reduce start-up time and simplification of electrical maintenance, Gemco can provide a junction box on the
machine for wiring to a remote panel. The junction box is available in four (4) NEMA ratings.
Northland Engineering Sales represents Gemco and other manufactures products in
North Dakota,
South Dakota, Minnesota Iowa And
Wisconsin Please contact us about Gemco Products.
PH. 651-738-7144
e-mail If you are located outside of the 5-State Area please contact Gemco Direct for a representative in your area.
301 Smalley Ave. Middlesex, NJ 08846 732-752-7900 800-OK-GEMCO
www.GemcoValve.com