| 摘要 |
PURPOSE:To eliminate clogging caused by the substance to be transported by installing a compressed air blowing-in port which is directed to the downstream side on the upstream side from the part where the substance to be transported tends to clog a pipe and blowing the compressed air into said compressed air blowing-in port when the piping is blocked. CONSTITUTION:Air blowing-in ports 10-12 for blowing compressed air into the downstream side, namely into the curved part are formed on the upstream side from the curved parts 4a-6a, and each air blowing-in port 13-15 for blowing the compressed air into the downstream side is installed on the upstream side from the gushing parts 4b-6b described the above. In order to supply the compressed air into the blowing-in ports 10-12 and 13-15, pressure gauges 16-18 are installed on the upstream side from the curved part, and when the detected pressure is higher than the set value, it is decided that blockade is present in the curved part or the qushing part. Further, blockade of the curved part or the gushing part can be detected through the reduction of the temperature on any of the thermometers 19-20 installed in the gushing parts 4b-6b of air feeding pipes 4-5 by a certain value from the average of the readings of thermometers 19-20. |
