公开(公告)号：US3902276A

公开(公告)日：1975-09-02

申请号：US52906974

申请日：1974-12-03

Applicant: JARVIS HAROLD F

Inventor： JARVIS HAROLD F

IPC: B24C3/06 ,  B24C3/16 ,  B24C3/32

CPC classification number: B24C3/325

Abstract: In a spin-blast apparatus for cleaning the interior of a pipe, in which abrasive is fed to a rotary blast nozzle caused to travel interiorly along the pipe, and in which the nozzle is mounted on a support conduit journalled for rotation within a non-rotating housing by bearings, the intake end of the support conduit bears against a sealing gasket which is supported by clamping means in such a way as to prevent excessive leakage of abrasive past the gasket. The clamping means is spaced from the end of the housing so as to define therewith a space which is open to atmosphere; thus, any abrasive which leaks past the gasket will fall from the apparatus and will not be forced under air pressure into the bearings.

Abstract translation: 在用于清洁管道内部的旋转喷吹装置中，其中将磨料供给到旋转喷嘴，使其沿管道内部行进，并且其中喷嘴安装在支撑导管上， 通过轴承旋转壳体，支撑导管的进气端承受密封垫圈，密封垫圈由夹紧装置支撑，以防止磨料经过衬垫的过度泄漏。 夹紧装置与壳体的端部间隔开，以便限定出与大气相通的空间; 因此，任何渗透垫圈的研磨剂都会从设备中掉落，并且不会被迫在空气压力下进入轴承。