APPLICATIONSmooth Double Roll Crusher is used for medium and fine crushing of soft to medium hard material like coal, fertilizer, chalk, clay, limestone, coke, glass etc. It can be also used for tertiary crushing of hard material like iron ore, refractory material. For better nipping of crushing material, the feed size is limited to 45150 mm(max).
OPERATING PRINCIPLEDue to opposite in ward rotation of the rolls, the feed material is nipped between the rolls and crushed by compression. The movement of the floating roll is effected by turning a spindle or through hydraulic cylinders. To control the product size, the gap between the rolls is adjusted by threaded spindle (horizontal or vertical) or cylinders. When a piece of un-crushable material enters the crushing zone, the gap increases automatically by compressing the springs, thereby releasing the same and the floating roll comes back to its original position once the material is released. Smooth Roll Crusher is fed uniformly across the entire width by suitable feeder to achieve proper performance and uniform wearing of rolls to maintain consistency of product granulometry.
CONSTRUCTIONAL FEATURES:It consists of two counter rotating rolls which are mounted horizontally on a rigid frame. The crushing area of the rolls are totally enclosed in a fabricated housing. One of the rolls is fixed in position while the other is a floating roll which can move relative to fixed roll to control product size and release un-crushable material by spring action. Both vertical spindle and horizontal spindle type gap adjustment system are available in MSEL range. In horizontal spindle system the roll shills horizontally during gap adjustment as well as spring actuation. In vertical spindle system the floating roll also moves horizontally being mounted on a spring loaded hinged “yoke beam”. The hinged yoke beam is supported on a set of Helical Coiled Spring having differential stiffness. The roll surface can be smooth or beaded depending on the type and size of the feed material. The crushing element is a single piece steel casting Roll mounted on taper hubs at both ends. Two rolls rotate in opposite direction by means of individual motor and vee belts with or without gear box. Smooth Roll Crusher can be provided with spring loaded roll scraper for removing sticky material from roll surface. Roll grinding arrangement can be supplied as an optional item for grinding the roll surface without removing the rolls from the crusher frame. Motorized or hand operated centralized grease lubrication system can be provided on request.
AVAILABLE SIZESROLL DIAMET ROLL LENGTH
|MOTOR POWER (kW)|
|400||250 to 400|
|2 x 5.5 to 2 x 7.5|
|600||400 to BOO||2xlito 2 x15|
|800||400 to 1200||2 x 15 to 2 x 45|
|1000||800 to 1200||2 x 37 to 2 x 55|
|1200||1200||2 x 75 to 2 x 90|