| 摘要 |
This invention relates to an improvement in a cleaning apparatus for a raw material transfer pipe of the type in which a cleaning member having a pressure-receiving recessed region coming into sliding contact with the inner wall of the transfer pipe for transferring a viscous or powdery raw material is fitted into the transfer pipe, and a pressurized fluid is supplied to the pressure-receiving recessed region of the cleaning member to pressure-feed the cleaning member inside the transfer pipe and to wipe off and remove any residue adhering to the wall of the transfer pipe. The present invention disposes integrally spherical guide members having a diameter smaller than the inner diameter of the transfer pipe at the front and rear regions of the cleaning member via elastic reduced diameter shaft regions. Two cleaning members may be coupled to form a pair in the longitudinal direction in such a manner as to maintain a gap greater than the inner diameter of the transfer pipe, and cleaning water jet ports may also be bored on the front spherical guide member. Furthermore, a brush and a sponge may be connected to the rear spherical guide member to further improve efficiency of cleaning.
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