EMI Introduces New Line of Sanitary Mixers

Cleveland Eastern Mixerany%> (EMI; Clinton, Conn.) has introduced a new series of sanitary mixers for the pharmaceutical, biotechnology, food, and chemical industries. Direct and gear-driven models are now available for both open and closed vessel applications from 50 to 2000 gallons; a variety of speeds and impellers are offered for processes requiring low shear, high flow, or high speed.

All units feature all-stainless construction, including stainless steel washdown motors from 1/4 to 7.5 horsepower, and polished (#4 or #8) shafts and impellers. Food-grade lubricants are used throughout the product line.

For sealed vessels, an optional dry running seal with a debris well for sanitary flushing is offered with 316SS mounting flanges or Tri-Clover fittings. Hydrofoil impellers used in all models use less horsepower for a given job.

"Only three companies meet strict U.S. Department of Agriculture (USDA) standards for sanitary mixers for the pharmaceutical and food industries," said James Donkin, President of EMI. "Our approval is based on stainless construction. The body is welded and polished to the shaft in a non-fouling internal shaft coupling so there are no grooves, making the mixers easy to clean. In addition the grease we use is considered edible--I don't know if you'd want to eat it, but it's certainly non-toxic."

In addition to USDA sanitary approval, our mixers meet 3A sanitary requirements but have not yet officially received approval for that body. 3A is a separate, non-government body dedicated to sanitary equipment standards and specifications.

Donkin explained that the new mixer line handles every mixing job from pilot plant (50 gallons) to storage tanks housing biotechnology products (2000 gallons). Mixers are used in large tanks to prevent solids settling.

Models and Specs
Direct-drive models have an output speed of 1750 rpm. This series is recommended for water-like solutions or when high shear is required.

Gear-driven models have a shaft speed of 400 rpm. These are designed for more viscous solutions with high flow and low shear requirements. Food-grade grease is used in the gear box.

Variable speed drives, with FDA-approved enclosures, are also offered for multiple mixing applications in the same tank or for handling sensitive ingredients requiring less agitation.

Mixers 1/2 horsepower or larger use a Rellance "Easy Clean" BISSC-certified totally enclosed motor. These motors, designed to avoid accumulating dirt and contaminants, withstand steam, hose washdown, detergents, and sanitizers for clean-in-place requirements. FDA-approved paint is used as well as hardware without exposed threads, stainless steel nameplates, shaft lip seals, and moisture drains.

Electric motors are available for 115/230V, 60Hz single phase or 230/460V, 60 Hz three-phase service. 50 Hz and special voltages are available on request.

With air motors operating pressures from 40 to 1000 psi, air consumption is approximately 12 cfm on 1/4 HP models, up to 70 cfm on 2 hp mixers.

For more information contact: James Donkin, President, Eastern Mixers, PO Box 912, Clinton, CT 06413. Tel: 860-669-1199. http://www.emimixers.com