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1. 发明授权

US4156470A Rotary earth boring drill bit with centrifugal foreign particle barrier device 失效
标题翻译：旋转钻镗钻头采用离心异物阻挡装置
公开(公告)号：US4156470A
公开(公告)日：1979-05-29
申请号：US889939
申请日：1978-03-24
申请人： Albert G. Bodine , Ernest A. VON Seggern
发明人： Albert G. Bodine , Ernest A. VON Seggern
IPC分类号： B04B5/10 , B04B9/00 , B04B15/00 , E21B10/22 , E21B10/23 , E21B10/24 , E21B10/25 , E21B21/00 , F16C17/14 , F16C33/76 , E21B9/35
CPC分类号： E21B10/25 , B04B15/00 , B04B5/10 , B04B9/00 , E21B10/23 , E21B10/24 , E21B21/002 , F16C17/14 , F16C33/76
摘要： A drilling bit for drilling earthen material such as an oil well rotary cone drilling bit, which includes means for preventing foreign particles such as sand, rock cuttings, etc., from reaching the rotational bearings of the bit cones. This end result is principally achieved by means of a centrifugal slinger disc or wall which is positioned in external concentricity with the drill bit cone bearing, and operates to drive granular particles away from the bearings, thereby preventing such particles from reaching these bearing surfaces. The granular particles are driven by the slinger action through a series of apertures forming a channel running out to a peripheral region of the bit cones. A channel continuation is also provided for lubricating fluid, which many comprise ambient water or oil placed in chambers surrounding the bearings, this channel providing access for such lubricating fluid inwardly to the bit cone bearings. A ring member carrying a plurality of curved vanes, this ring member being externally concentric with the supporting shaft of the cone and located near the outer periphery of the bit cone, may also be employed to prevent larger foreign particles, such as cuttings, from entering into the region of said slinger.
摘要翻译：用于钻井土的钻头，例如油井旋转锥形钻头，其包括用于防止诸如砂，岩石切割等的异物的装置到达钻头锥体的旋转轴承。这个最终结果主要是通过与钻头锥形轴承处于外部同心度的离心抛油盘或壁来实现的，并且操作以将颗粒颗粒驱离轴承，从而防止这些颗粒到达这些轴承表面。颗粒状颗粒通过一系列孔径由抛油环作用驱动，形成通向尾锥周边区域的通道。还提供了用于润滑流体的通道延续，其中许多流体包括放置在围绕轴承的腔室中的环境水或油，该通道提供这种润滑流体向内进入钻头锥形轴承的通路。携带多个弯曲叶片的环形构件也可用于防止较大的异物（例如切屑）进入到该锥形叶片中，该环形构件与锥体的支撑轴在外部同心并位于钻头锥体的外周附近进入所谓的抛油环区域。

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