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What Is And How Double Roll Crusher Works

Double roll crusher is mainly composed with driving device, the roller; spring insurance device, frame, and belt tensioning devise components.Gear reducer motors through v-belts to drive roller rotation, and let two groups of the roller relative rotation, forming crushing chamber, material broken discharges from the lower frame.The roll shaft consists of crushing roller, spindle, bearing and pulley etc.Crushing roller is composed of two groups inclined wedge through the keys with spindle lock into a whole, through two bearing spindle fixed in the frame.The roller divided into the fixed roller and movable roller, the fixed roll shaft bolted on the rigidity frame, the movable roll shaft is installed in the slide, rear spring loaded, can assure the roller when working with sufficient crushing force.Belt tensioning devise consists of roller, bracket, and lever and spring component.When crusher works activate roller with materials into the crushing chamber and reciprocating vibration, and v-belts will sometimes tensioner sometimes relaxation, belts tensioning devise may guarantee v-belts is always in the tensioner state; in addition crusher works after a period of time and v-belts will become relaxation, at this time by rotating the nut on the tensioning devise can adjust the height of the roller fulcrum, thereby can make the v-belts tensioning again.2pg series of roll crusher, available for ore dressing, chemical, cement, refractoriness, abrasive, building materials industries, finely crushing all kinds of ore and rock below the high, medium hardness, especially in the building materials industry to produce melon meters stone and green bean products etc, and have the more excellent effect than general stave stone crushers; in recent years, also widely used in crushing steel grit industries.The particles are drawn into the gap between the rolls by their rotating motion and a friction angle formed between the rolls and the particle, called the nip angle.The two rolls force the particle between their rotating surface into the ever smaller gap area, and it fractures from the compressive forces presented by the rotating rolls.Some major advantages are they give a very fine product size distribution and they produce very little dust or fines.These machines are effectively used in minerals crushing where the ores are not too abrasive and they are also used in smaller scale production mining of more abrasive metal ores, such as gold.Coal is probably the largest user, currently, though.Coal plants will use them, either single roll or double roll, as primary crushers, reducing the rom coal.Usually, these crushers will have teeth or raised forms on the face of the roll.(they used for minerals and metal ores have smooth faced rolls.) sand washing machine:http://www.Hxjq-crusher.Com/16.Html combination crusher:http://www.Hxjq-crusher.Com/4.Html.

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