Description/ Specification of Double Roll Crusher

Double roll crusher is a critical machine used in various industries such as mining, mineral processing, cement, chemical, and so on. The machine is mainly used to crush medium-hard to soft materials like coal, limestone, clay, and fertilisers. Due to its easy design, reliability, and effective crushing mechanism, it is one of the most popular machines used in size reduction applications. Working principle The working principle of the double roll crusher is based on compression. It is made up of two cylindrical rollers that spin in opposite directions. When the feed material is fed into the gap between the rollers, it is compressed and crushed into fine pieces. The crushed product size is significantly affected by the gap between the two rolls, and this gap can be varied depending on the desired output size. The speed of rotation and surface of the rollers also affect the quality of the final product. Main parts The crusher is primarily built with two parallel rolls placed on heavy-duty shafts, a frame to hold them, bearings, drive arrangements, and spring or hydraulic roll adjustment systems. The rolls could be smooth, corrugated, or toothed depending on the nature of the material and application. Drive systems typically include motors, gearboxes, and coupling arrangements in order to achieve synchronised roll movement. Features Double roll crushers are small and need comparatively less space than the other crushers. They produce limited dust and fines, making them ideal for friable material handling. The option of controlling the product size by changing roll gaps is also another significant attribute. The design provides even size distribution of the product and consistent operation even in continuous heavy loads. Maintenance aspects Double roll crushers have the advantage of being easy to maintain. The rolls can be easily replaced when they are worn out, and it is easy to access the internal components. Periodic lubrication of bearings and rolls alignment checks are all that are needed for them to run smoothly. Springs or hydraulic cylinders utilized in adjusting the rolls also need periodic inspection so that they will function perfectly. By proper preventive maintenance, such machines provide an extended service life and lowered downtime. Advantages The most important advantages of applying double roll crushers are high efficiency, low consumption, and low operating costs. They have a simple structure that ensures less possibility of mechanical breakdown. They generate little noise and dust, which makes them eco-friendly in contrast to other crushing technologies. Their another advantage is that they can handle various materials ranging from soft coal to medium-hard rocks. Applications Double roll crushers find wide application in industries dealing with bulk raw materials. In mineral and coal mining, they find application in crushing minerals and ores. In the cement industry, they are employed in preparing raw materials such as clay and limestone. Coal handling plants utilize them for crushing coal into sizes that can be processed further. They are also utilized in fertiliser plants, salt processing plants, glass making, and chemical industries where size reduction under controlled conditions is necessary. In summary, the double roll crusher is a dependable, effective, and economical machine that is critically involved in a variety of industrial operations. Its simple working mechanism, rugged design, ease of maintenance, and versatility are advantages that make it a beneficial option for size reduction activities. #doublerollcrausher