为了确保旅行舒适必须使客车内部设施符合旅客的要求。因此,改进客车厕所也是现代铁路的一项迫切任务。目前铁路客车上用的直通式厕所系统不能满足客车卫生和环保要求,必须改变现状。某些铁路部门曾作过一些试验,想通过采用一些新结构来改变高速时导便筒的排便情况,但都未能取得预期效果,照样出现液体粪便的飞溅和在车底架、走行部分、停车线路上有粘稠状排出物的堆积。因此,为避免粪便在运行时到处抛撒污染环境,采用封 In order to ensure the comfort of traveling, the passenger bus interior facilities must be adapted to the requirements of the passengers. Therefore, the improvement of bus latrines is also an urgent task for modern railways. At present, the straight-through toilet system used on railway passenger cars can not meet the requirements of bus hygiene and environmental protection and must change the status quo. Some railway departments have made some experiments and tried to change the defecation situation of the catheter at high speed by adopting some new structures. However, none of them failed to achieve the expected results, so the spattering of liquid excrement and the spillage in the car chassis, There is a buildup of sticky effluents on the parking lot. Therefore, in order to avoid throwing contaminated environment around the manure in the operation, the seal