A pipeline extending laterally from a main pipeline is cleaned from the main pipeline by utilizing a nozzle with rearwardly oriented exit orifices through which fluid is forced, the jet effect of the escape of the fluid from those orifices providing the impetus to force the nozzle through the lateral pipeline so as to penetrate and physically clear away obstructions, the escaping fluid flowing through and cleaning the lateral pipeline.
A method and a device for washing a drain pipe allowing a nozzle to be rotated along the inner peripheral surface of a pipe even in a lateral pipe, wherein the positions of a plurality of injection holes (10, 11, 12, and 13) formed in the nozzle (1) are formed and the amount of high pressure water jetted from each of the injection holes (10, 11, 12, and 13) are regulated so that the specific injection hole (10) only among the plurality of injection holes is set so as to be opposed always to the inner peripheral surface (5a) of the pipe.
A method and a device for washing a drain pipe allowing a nozzle to be rotated along the inner peripheral surface of a pipe even in a lateral pipe, wherein the positions of a plurality of injection holes (10, 11, 12, and 13) formed in the nozzle (1) are formed and the amount of high pressure water jetted from each of the injection holes (10, 11, 12, and 13) are regulated so that the specific injection hole (10) only among the plurality of injection holes is set so as to be opposed always to the inner peripheral surface (5a) of the pipe.
An in-duct searching apparatus characterized by comprising a traveling truck, a video camera for in-duct observation on board the traveling truck, a singular or plural compressed air ejecting nozzle, and a monitor/remote-control portion for remotely controlling the traveling truck and the video camera and the compressed air ejecting nozzle; wherein the compressed air ejecting nozzle ejects compressed air toward the alien substances inside the duct which have been observed by the video camera, for grasping their properties.
An apparatus for applying dry herbicides to sewer lines which includes a container for storing a herbicide, a length of tubing, and nozzle means connected to the tubing. Also included are means for propelling herbicide stored in the container through the tubing such that herbicide may be dispersed from the nozzle. Locomotion means are also provided for transporting the nozzle within the interior of a sewer line such that the interior surfaces of a sewer line may be sprayed with a herbicide. In this fashion herbicide may be directed at any flora growing within the sewer line.
A system including an apparatus for cleaning an inside surface of a duct. The system includes a traveling portion and a remote-control monitor portion. The traveling portion includes a traveling truck and the truck carries a compressed air ejector and a video camera, and the remote-control monitor portion receives images from the video camera to control remotely the traveling portion while monitoring a front view of the traveling portion in accordance with the signal coming from the video camera. The compressed air ejector is equipped with a rotating nozzle for ejecting compressed air toward the duct inside surface in an oblique direction in front of the traveling truck. An air compressor can be carried by the truck or the compressed air can be fed to the nozzle ejector via a hose from outside the duct.
