Patent ID: 8974604
Filing Date: 2015-03-10
Classification: B08B

Abstract:
1. A method for cleaning a sewer pipe of collected solid materials comprising: providing access to the pipe at first and second longitudinally spaced locations; providing at the first location a hose system including a hose supply and pulling device for releasing and withdrawing the hose system and a cleaning liquid supply system for supplying cleaning liquid to the hose system; providing at the second location a pulling system including a cable and a device for releasing and pulling in the cable; providing at the second location an extraction system for extracting solid materials drawn to the second location; in a first step at the first location, attaching the hose system to a first jet nozzle head and causing the first jet nozzle head with the hose system attached to move from the first location to the second location by directing the liquid from the first jet nozzle head toward the first location so that the flow of liquid acts to drive the first jet nozzle head along the pipe toward the second location while pulling the hose system along the pipe; in a second step, attaching the cable and withdrawing the hose system to the first location with the cable attached so as to pull the cable to the first location; and in a third step, attaching a second jet nozzle head to the hose system and with the cable and the hose system attached to the second jet nozzle head, pulling the cable back toward the second location to cause the second jet nozzle head to move from the first location to the second location with the hose system pulled behind the second jet nozzle head from the first location while directing the cleaning liquid from the second jet nozzle head toward the second location so that the flow of cleaning liquid acts to drive the solid materials along the pipe to the second location for extraction at the second location.