Importance

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Abstract

A vibratory deck of an end feed separator transfers material in a linear direction from the feed end to the discharge end of a screen mounted on the separator frame. A pair of rotary eccentric vibrators is independently mounted in mirror relationship on opposite sides of the frame. The eccentric vibrator shafts are centered on axes at an alpha angle to the direction of horizontal motion of the material, canted at an epsilon angle from the alpha angle and tilted about the epsilon angle from the vertical in a plane normal to the epsilon axes at opposite beta angles. The centers of the eccentric vibrator shafts are offset from the center of vibratory mass of the frame by a rho distance. The alpha, epsilon, beta and rho factors are coordinated so that the aspect ratios of the elliptical patterns of motion from the feed to the discharge ends of the screen sequentially increase or decrease. Alternatively, these factors can be coordinated so that the major axis angles of the elliptical patterns of motion from the feed to the discharge end of the screen sequentially increase or decrease in a range of from greater than 0 degrees to less than 90 degrees. In either alternative, the upper side of all of the elliptical patterns have directions of rotation extending upwardly and forwardly from the feed end toward the discharge end of the screen so that forward conveyance occurs at all points along the screen. Moreover, both alternatives can be simultaneously achieved.

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First Claim