Fire extinguishing system and fire extinguishing method thereof

The invention relates to the technical field of water lifting pipes of fire pools, in particular to a fire extinguishing system which comprises a water lifting pipe, the bottom end of the water lifting pipe is movably sleeved with an extension pipe fitting, the extension pipe fitting is limited through a traction piece, a locking piece is arranged on the traction piece, and a filtering piece is arranged at the bottom end of the extension pipe fitting; the fire extinguishing system has the beneficial effects that the filter part is mounted on the extension pipe fitting, and when the filter part needs to be cleaned, the extension pipe fitting is pushed upwards, so that the space between the filter part and the fire pool is large, and the cleaning operation requirement of the filter part is met. 本发明涉及消防水池提水管技术领域，具体为消防灭火系统包括提水管，所述提水管的底端活动套设有延伸管件，延伸管件通过牵引件限位，且牵引件上设置有锁定件，延伸管件的底端设置有过滤件；有益效果为：本发明提出的消防灭火系统将过滤件安装在延伸管件上，需要清理过滤件时，上推延伸管件，如此过滤件和消防水池之间空间大，满足对过滤件清理作业要求。