Case Study: Rotary Electric Vibrator Solution

Problem

Dow Corning of Midland, Michigan was experiencing high maintenance problems with electric vibrators in their wood-fired power plant. These rotary electric vibrators were mounted on 4′ x 6′ screens, which were used to screen pyrites from the exhaust gases. These vibrators, which run at 3600 revolutions per minute, were mounted to an arm that tapped the screen deck. This type of vibration caused damage to the screen deck and supports. The customer felt that speed was the problem, so he purchased a frequency inverteR to control the RPMs. This helped some, but the maintenance cost to repair the vibrator, screen deck, and supports was still excessive.

Situation

The customer called his local MARTIN® Vibration Systems salesperson for assistance in solving this vibration problem. He recommended the MARTIN® NTS™ 50-04 Non-Impacting Vibrator as the solution. This bin vibrator was chosen because of its versatility. Having the ability to independently control the frequency, amplitude, and force output was key in solving this problem. After installation, the vibrator was fine tuned to the exact force to do the job.

Solution

We found the force output requirement was only about one-half of the force they were using with the rotary vibrator. Before changing to the MARTIN® NTS™ Vibrator, the customer had to rebuild his screen every 18-24 months. He has now had the MARTIN® Vibration Systems equipment for over two years, and there has been no damage to the screen deck or supports.