The purifier drive with a friction clutch arrangement is designed to drive the horizontal shaft of the purifier. Here are the key points about this arrangement:
1. Friction Drum: A friction drum is mounted on the horizontal shaft. It provides the surface against which the friction pads exert force to generate friction.
2. Friction Pads: Three friction pads are mounted on the motor shaft. These pads have a curved surface with Ferodo lining, which enhances the frictional contact. The pads are designed to move out or fall out due to centrifugal force when the motor starts.
3. Friction and Slipping: When the motor starts, the friction pads make contact with the inner surface of the friction drum. The resulting friction between the pads and the drum causes slipping, which gradually drives the horizontal shaft and accelerates its speed.
4. Gradual Acceleration: The friction clutch arrangement allows for a gradual acceleration or increase in speed of the horizontal shaft. As the slipping occurs, the speed of the shaft increases gradually.
5. Maximum Speed: As the motor speed reaches its maximum, the centrifugal force acting on the friction pads reaches its maximum value. This creates maximum friction between the pads and the drum, which gradually brings the horizontal shaft to its rated speed.
6. Safety Device: The friction clutch arrangement also acts as a safety device. If there is any mechanical obstruction or excessive load on the purifier bowl or drive assembly, the clutch will slip. This slipping action prevents severe damage to the purifier components by disengaging the drive and protecting the system.
The friction clutch arrangement provides a reliable and controlled method of driving the horizontal shaft in purifiers. It allows for gradual acceleration, smooth operation, and acts as a safety measure to protect the equipment from potential damage.