Method and apparatus for separating wood bark from gravel
    1.
    发明授权
    Method and apparatus for separating wood bark from gravel 失效
    用于从灰度分离木材的方法和装置

    公开(公告)号:US3865241A

    公开(公告)日:1975-02-11

    申请号:US36237673

    申请日:1973-05-21

    申请人: CROW GERALD W

    发明人: CROW GERALD W

    CPC分类号: D21B1/028 B03B7/00 B07B9/02

    摘要: A bark and bedding gravel mixture is dumped into a hopper and moves along an inclined vibratory conveyor onto a screening section which screens limbs and other large chunks of wood from the bark-and-gravel mixture as well as sand-sized particles. The limbs and wood chunks are reduced to chips and stored for later use. The sand is conveyed to an aggregate storage site for reuse as bedding material. The bark-and-gravel mixture is dropped from an outlet of the screening section toward but short of the infeed end of a vibratory conveyor table through an air stream which blows the majority of the gravel and bark onto the table while oversize rocks fall short of the table. The bark-and-rock mixture moves through vibratory action along the table into a gravel channel which is separated from a second, bark channel by a transversely inclined rampway forming a ridge between the two channels. An air stream directed across the gravel channel toward the rampway induces the bark portion of the mixture, which forms a stratified layer over the gravel under vibration, to move up the rampway and into the bark channel as both the bark and gravel travel downstream on the table. Sand is screened from the bark near the downstream end of the bark channel after the bark has been dried. The cleaned and dried bark moves from the downstream end of the bark channel to a hog which reduces the bark chunks to a size suitable for use as fuel. The gravel moves from the downstream end of the gravel channel to the gravel storage area for reuse in bedding a log storage yard.

    摘要翻译: 将树皮和床上用品砾石混合物倾倒入料斗,并沿着倾斜的振动输送机移动到筛分部分,筛分部分从树皮和砾石混合物以及沙粒状颗粒中筛选四肢和其他大块木材。 四肢和木块被还原成碎片并储存以备后用。 沙子被输送到聚集的储存地点,以作为床上用品使用。 树皮和砾石混合物从筛分部分的出口向振动输送台的进料端落下,通过气流将大部分的砾石和树皮吹到桌子上,而超大的岩石不足 桌子。 树皮和岩石混合物沿着台面的振动作用移动到砾石通道中,砾石通道通过在两个通道之间形成脊的横向倾斜的坡道与第二个树皮通道分离。 穿过砾石通道朝向道路的空气流引起混合物的树皮部分,其在振动下在砾石上形成分层,以在树皮和砾石在下游行进时沿着坡道行进并进入树皮通道 表。 在树皮干燥之后,从树皮通道的下游端附近的树皮中筛选沙子。 清洁和干燥的树皮从树皮通道的下游端移动到猪,其将树皮块减小到适合用作燃料的尺寸。 砾石从砾石通道的下游端移动到砾石储存区域,以便在堆垛物料堆垛中重新使用。