To provide a dirt removal device capable of reducing the size of a sewage inlet while preventing the backflow of gas from the sewage inlet.SOLUTION: A disclosed dirt removal device includes: a sewage inlet with an opening in the top; a lid to cover the opening of the sewage inlet; a tubular inlet tube attached to the lid and is connectable to the sewage inlet via a suction hose in the discharge outlet of the sewage storage tank of a railway vehicle; and a check valve attached to the inlet tube. The check valve includes: a shaft body; an opening/closing lid rotatable on a shaft body, which is rotatable between a first rotation position closing the lower end of an inlet tube and a second rotation position opening the bottom end of the inlet tube; and a balance weight that is attached to the opening/closing lid and configured so as to, when the force applied from inside the inlet tube to the opening/closing lid is less than a first threshold, position the opening/closing lid in the first rotation position, and when the force applied from inside the inlet tube to the opening/closing lid is greater than or equal to a second threshold, which is greater than the first threshold, position the opening/closing lid to the second rotation position.SELECTED DRAWING: Figure 2
【課題】汚水枡からのガスの逆流を防止しつつ、汚水枡の小型化が可能な汚物抜き取り装置を提供する。【解決手段】本発明に係る汚物抜き取り装置は、上面に開口部を有する汚水枡と、汚水枡の開口部を覆う蓋と、蓋に取り付けられ、汚水枡に鉄道車両の汚物タンクの排出口にサクションホースを介して接続可能な管状の導入管と、導入管に取り付けられる逆流防止弁とを備える。逆流防止弁は、軸体と、軸体を中心として回転可能であり、導入管の下端を閉鎖する第1の回転位置と、導入管の下端を開放する第2の回転位置との間で回転可能な開閉蓋と、開閉蓋に取り付けられ、開閉蓋に対して導入管の内部から加えられる力の大きさが第1の閾値以下である場合、開閉蓋を第1の回転位置に位置させ、開閉蓋に対して導入管の内部から加えられる力の大きさが第1の閾値より大きい第2の閾値以上である場合、開閉蓋を第2の回転位置に位置させるバランスウェイトとを含む。【選択図】図2
DIRT REMOVAL DEVICE FOR RAILWAY VEHICLE
鉄道車両用汚物抜き取り装置
2025-01-31
Patent
Electronic Resource
Japanese
Dirt box with stiffening plate structure for railway vehicle
European Patent Office | 2023
|Unpowered dirt discharge device for airtight toilet for railway
European Patent Office | 2015
|