Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
To provide a back-flow prevention device which can be easily detached in an axial direction even if the inside of a tube body is dirty with filth, etc., and which does not drop off downstream.SOLUTION: A back-flow prevention device attachable to a tube body 1 comprises: a frame body 3 including an opening through which a fluid passes; a watertight part 2 disposed on an outside surface of the frame body 3 and connecting the outside surface of the frame body 3 and the tube body 1 in a watertight manner; a back-flow prevention valve 4 disposed in the opening of the frame body 3 and preventing a back-flow of the fluid from a downstream side to an upstream side; and a grasping part 5 disposed in an axial direction of the back-flow valve 4. The grasping part 5 allows the back-flow prevention device to be attachable to/detachable from the tube body 1 in the axial direction, and the back-flow prevention device includes a drop-off prevention part 7 that prevents the back-flow prevention device from dropping off to the downstream side or being inserted excessively.SELECTED DRAWING: Figure 1
【課題】本発明は管体内が汚物等で汚れていた場合でも、容易に軸方向に取り外すことができ、かつ下流へ脱落しない逆流防止装置を提供するものである。【解決手段】管体１に取り付け可能であって、流体が通過する開口を備えた枠体３と、前記枠体３の外側面に配置されて前記枠体３外側面と管体１との間を水密的に接続する水密部２と、前記枠体３の開口に備えられて、下流側から上流側への流体の逆流を防止する逆流防止弁４と、前記逆流防止弁４の軸方向に備えられる把持部５と、から成る逆流防止装置であって、前記把持部５によって前記逆流防止装置を管体１から前記軸方向に着脱可能とするとともに、前記逆流防止装置が下流側へ脱落又は過挿入を防止する脱落防止部７を前記逆流防止装置に備えた。【選択図】図1
To provide a back-flow prevention device which can be easily detached in an axial direction even if the inside of a tube body is dirty with filth, etc., and which does not drop off downstream.SOLUTION: A back-flow prevention device attachable to a tube body 1 comprises: a frame body 3 including an opening through which a fluid passes; a watertight part 2 disposed on an outside surface of the frame body 3 and connecting the outside surface of the frame body 3 and the tube body 1 in a watertight manner; a back-flow prevention valve 4 disposed in the opening of the frame body 3 and preventing a back-flow of the fluid from a downstream side to an upstream side; and a grasping part 5 disposed in an axial direction of the back-flow valve 4. The grasping part 5 allows the back-flow prevention device to be attachable to/detachable from the tube body 1 in the axial direction, and the back-flow prevention device includes a drop-off prevention part 7 that prevents the back-flow prevention device from dropping off to the downstream side or being inserted excessively.SELECTED DRAWING: Figure 1
【課題】本発明は管体内が汚物等で汚れていた場合でも、容易に軸方向に取り外すことができ、かつ下流へ脱落しない逆流防止装置を提供するものである。【解決手段】管体１に取り付け可能であって、流体が通過する開口を備えた枠体３と、前記枠体３の外側面に配置されて前記枠体３外側面と管体１との間を水密的に接続する水密部２と、前記枠体３の開口に備えられて、下流側から上流側への流体の逆流を防止する逆流防止弁４と、前記逆流防止弁４の軸方向に備えられる把持部５と、から成る逆流防止装置であって、前記把持部５によって前記逆流防止装置を管体１から前記軸方向に着脱可能とするとともに、前記逆流防止装置が下流側へ脱落又は過挿入を防止する脱落防止部７を前記逆流防止装置に備えた。【選択図】図1
BACK-FLOW PREVENTION DEVICE
逆流防止装置
SAKURA KENICHI (Autor:in)
19.06.2023
Patent
Elektronische Ressource
Japanisch
IPC:
E03F
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