| 摘要 |
A working device is capable of moving inside a pipe, whereby it is possible to exert the extremely large driving force in the pipe, and provided the device for performing the work sufficiently such as the cleaning, the vacuum recovering, and the forcibly drying the wet internal surface of the pipe. The device which moves along the pipe and operates on the internal surface of the pipe, comprising: material feeding pipe, pressure boundary partition, pressure boundary seal, nozzle unit, material feeding hose, traveling device, feeding device of the surface processing material, vacuum generating means, negative pressure space, and environment pressure space. Wherein, negative pressure space and environment pressure space are defined in the pipe by pressure boundary partition and pressure boundary seal, and vacuum breaking valve mechanism maintains fixedly the differential-pressure between the negative pressure space and the environment pressure space, and which makes the environment fluid to flow into the negative pressure space from the environment pressure space. |
| 主权项 |
1. A working device capable of moving inside a pipe, comprising:
a mobile crawler, which moves along the pipe and operates on an internal surface of the pipe, said mobile crawler including:
a material feeding pipe, which is arranged in an axis part of the pipe, and which feeds a material such as a surface processing material;a pressure boundary partition, which is mounted outside a circumference of the material feeding pipe;a pressure boundary seal, which is mounted outside a circumference of the pressure boundary partition, of which free end portion touches an internal circumference of the pipe, of which whole shape is annular, and which is made of a flexible material;a nozzle unit, which is connected to one end of the material feeding pipe, which ejects the surface processing material toward an internal surface of the pipe, or which sprays the surface processing material toward the internal surface of the pipe, or which supplies the surface processing material on the internal surface of the pipe; anda vacuum breaking valve mechanism, which is provided in the mobile crawler, which maintains fixedly a differential-pressure between a negative pressure space and an environment pressure space, and which makes a fluid to flow into the negative pressure space from the environment pressure space; a material feeding hose, of which one end is connected to the material feeding pipe, and which feeds a material such as the surface processing material; a traveling device, which moves the mobile crawler along the pipe; a feeding device of the surface processing material, which is connected to another end of the material feeding hose; a vacuum generating unit, which is connected to one end of the pipe where the material feeding hose is not put in position; and a suction hose, which connects the one end of the pipe and the vacuum generating means, wherein a negative pressure space is formed in the pipe, of which area is situated at one side of the pipe, of which one side is defined from another area of the pipe by the pressure boundary partition and the pressure boundary seal, and of which one side is connected to the vacuum generating unit, and an environment pressure space is formed in the pipe, of which area is situated at another side of the pipe, of which another side is connected to the outside area of the pipe, and of which another side is put in position the material feeding hose. |
