The invention discloses a four-roll
crusher which comprises a feeding opening, a stone crushing
barrel and a base. The two ends of the base are each fixedly provided with a motor, the stone crushing
barrel is arranged between the two motors and fixedly mounted on the base, a feeding opening is formed in the upper end of the stone crushing
barrel, a funnel-shaped collecting opening is formed in the lower end of the stone crushing barrel, two through grooves are formed in the two ends of the outer wall on the upper portion of the stone crushing barrel respectively, and two through grooves are formed in the two ends of the outer wall of the lower portion of the stone crushing barrel respectively. Hinges penetrate through the through grooves, the hinges on the outer wall of the stone crushing barrel are fixed through locating roll shafts, the locating roll shafts are fixedly mounted on the outer wall of the stone crushing barrel, and four rollers are arranged on the upper middle portion in the stone crushing barrel. The
crusher carries out multiple times of crushing, so that working efficiency is improved, the
powder passing rate is decreased, and smaller material blocks can be obtained; meanwhile, the function of the
crusher is enhanced, work is stable,
noise is low, manufacturing cost and maintenance cost are low, and the service life is longer.