The utility model relates to a replaceable type mining screwdrill centralizer is characterized in that the inner ring body are connected by screw shell wall smooth outer ring, and screw drill and a plurality of radiating plates, the outer ring body is sheathed on the outer ring body and with the same axis of the inner set in the ring body is symmetrical extends to the external outer ring, inner ring height is the height of the outer ring 1.4-3 times; a plurality of radiating plate arranged along the radial direction and surrounding the inner ring are fixedly connected between the cloth and the inner ring and outer ring, forming a plurality of through grooves in the outer circular ring body and the inner ring the outer wall; outer ring arranged on the wear-resistant layer; centralizer is one thing. The utility model has the advantages of improving the righting effect, being easy to process, easy to change, flexible and convenient to use, and reducing the processing and application cost.
【技术实现步骤摘要】
【技术保护点】
１．一种可更换式矿用螺杆钻具扶正器，其特征在于是由外壁光滑的外圆环体、与螺杆钻具的壳体活动连接的内圆环体及多个辐板构成，所述外圆环体套于所述内圆环体外侧并与其同轴线设置，内圆环体两端对称伸至外圆环体外部，所述多个辐板沿径向设置并环绕内圆环体均布固定连接在内圆环体与外圆环体之间，在外圆环体与内圆环体之间形成多个过流槽。
【技术特征摘要】
【专利技术属性】
技术研发人员：李云勇，王云涛，丁生瑞，
申请(专利权)人：天津立林石油机械有限公司，
类型：实用新型
国别省市：12
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。