초록 ▼

A process for cleaning pipelines and especially ventilation pipes and ducts in buildings, and includes a nozzle connected to a supply conduit through which a pressurized medium can flow. The arrangement includes a nozzle opening directed forward away from the supply conduit. The nozzle opening is in

A process for cleaning pipelines and especially ventilation pipes and ducts in buildings, and includes a nozzle connected to a supply conduit through which a pressurized medium can flow. The arrangement includes a nozzle opening directed forward away from the supply conduit. The nozzle opening is in the form of a large continuous annular gap which extends along the periphery of the nozzle and is connected to the supply conduit and the source of a pressurized medium. The gap directs the medium toward the inner walls of the pipe or duct and effects a cleaning of the inner walls. The nozzle is moved into the pipe or duct by moving a rigid supply conduit.

대표청구항 ▼

A process for cleaning pipe lines with a cleaning means, which is connected via a rigid supply conduit to a source of pressurized medium and which exhibits nozzle opening directed in at least one direction of a backward direction and a forward direction, said backward direction being a direction tow

A process for cleaning pipe lines with a cleaning means, which is connected via a rigid supply conduit to a source of pressurized medium and which exhibits nozzle opening directed in at least one direction of a backward direction and a forward direction, said backward direction being a direction towards said supply conduit and said forward direction being a direction away from said supply conduit, wherein said nozzle opening is in a form of a substantially continuous annular gap which extends along a periphery of the cleaning means and which is connected to the supply conduit and the source of pressurized medium, said process comprising the steps of: discharging said pressurized medium through the nozzle opening to clean inner walls of a pipeline; bringing said nozzle opening in close contact with the inner wall of the pipeline to cause a pressure differential on opposite sides of the cleaning means thereby keeping the cleaning means in contact with the inner wall; and forcing the cleaning means forward through the pipeline by means of moving said rigid supply conduit therethrough, wherein the discharging pressurized medium is at least directed forward in the direction of movement of the cleaning means.