| 摘要 |
A pipe cleaning assembly includes a main shaft defining an inner bore aligned along a first axis, the inner bore being able to couple in fluid communication with coiled tubing. A slide shaft is disposed around the main shaft, the slide shaft having a forward end, a rear end, and a plurality of fluid pathways. Each of the fluid pathways is in fluid communication between the forward end of the slide shaft and the read end of the slide shaft. Each of the fluid pathways has a forward end able to direct fluid toward an inner surface of a pipe. The slide shaft is able to slide along the main shaft between a first position and a second position, in the direction of the first axis. The first position permits fluid flow through the plurality of fluid pathways, from the rear end of the slide shaft to the forward end of the slide shaft. The second position restricts fluid flow through the plurality of fluid pathways, from the forward end of the slide shaft to the rear end of the slide shaft.
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