Rotochopper grinders have a range of mechanisms to protect your machine from detrimental downtime including our StopWatch monitoring system and ferrous metal removal devices.
Rotochopper grinders have a range of mechanisms to protect your machine from detrimental downtime including our StopWatch monitoring system and ferrous metal removal devices.
The StopWatch system monitors rotor vibration to reduce damage from severe impacts with un-grindable objects, rotor imbalance, and other causes of damaging vibration. If an un-grindable object enters the grinding chamber, the StopWatch will sense the spike in vibration and instantly stop and reverse the infeed conveyor. By reversing the infeed conveyor, the StopWatch system lowers the chance of the rotor repeated striking the tramp object. Once the StopWatch is triggered, the infeed will remain stopped, allowing the operator to ensure the grinder is in proper condition before resuming operation.
To use the StopWatch, the operator sets an acceptable vibration level through the electronic controller. Since different feedstocks produce different vibration levels, the operator can quickly fine tune the vibration threshold to match the grinding application. Adjusting the vibration threshold can help avoid unnecessary stopping of the infeed from normal operating vibration.
*StopWatch Monitoring System is available for select models.
Rotochopper grinders and hammermills can be equipped with a variety of metal removal methods to help ensure you get end products that are free of ferrous metals.
Magnetic head pulleys are effective for removal of light ferrous metal, like pallet nails. The separated metal travels down the underside of the conveyor for collection in a dumpster.
A cross-belt conveyor is a self-cleaning plate magnet positioned above the discharge conveyor. Cross-belt conveyors offer greater levels of metal separation than magnetic head pulleys.
An S-chute magnet provides redundant metal removal for a hammermill to help ensure the material flowing into the hammermill is free of ferrous metal.
Upon severe impact with an un-grindable object, shear bolts in the screen cam arms may shear, which allows the screen, cradle, and slab ramp to drop away from rotor, in order to limit damage.
Rotochopper, Inc.
217 West Street, PO Box 295
St. Martin, MN 56376
Phone: 320-875-9950
Email: info@rotochopper.com
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