A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Drainage backflow preventing device
The invention discloses a drainage backflow preventing device which is installed on a drainage bent pipe. The backflow preventing device comprises an inner pipe matched with the drainage bent pipe, apipe-shaped structure for flowing of liquid is arranged in the inner pipe, the pipe-shaped structure is arranged in the inner pipe and extends in the direction of the drainage bent pipe, a water inletand outlet, installed on the side of the drainage bent pipe, of the pipe-shaped structure is provided with a rocking cover, and when the backflow preventing device is in a closed state, the rocking cover completely covers the water inlet and outlet. A torsion spring is arranged between the rocking cover and the inner pipe for fixing, closing performance of the device is improved, the device can be closed without being affected by any factors, the service life of the device is prolonged by adopting the torsion spring, the strength is high, oxidation resistance and rust prevention are good, thestructure is firm and reliable, and damage is not likely to occur.
本发明公开了一种下水防回流装置，其安装于下水弯管中，该防回流装置包括与所述下水弯管配合安装的内管，所述内管内开设有让液体通过的管状结构，所述管状结构置于所述内管内，并向所述下水弯管的方向延伸设置，所述管状结构的装入所述下水弯管侧的出入水口上安装有摇盖，在防回流装置处于闭合状态时，所述摇盖完全覆盖所述出入水口；本发明在摇盖和内管之间采用扭簧固定，加强了装置的闭合性能，使其不受任何因素都能完美闭合，扭簧的使用提高了装置的使用寿命，且强度高，抗氧化，防锈好，结构牢固可靠，不易损坏。
Drainage backflow preventing device
The invention discloses a drainage backflow preventing device which is installed on a drainage bent pipe. The backflow preventing device comprises an inner pipe matched with the drainage bent pipe, apipe-shaped structure for flowing of liquid is arranged in the inner pipe, the pipe-shaped structure is arranged in the inner pipe and extends in the direction of the drainage bent pipe, a water inletand outlet, installed on the side of the drainage bent pipe, of the pipe-shaped structure is provided with a rocking cover, and when the backflow preventing device is in a closed state, the rocking cover completely covers the water inlet and outlet. A torsion spring is arranged between the rocking cover and the inner pipe for fixing, closing performance of the device is improved, the device can be closed without being affected by any factors, the service life of the device is prolonged by adopting the torsion spring, the strength is high, oxidation resistance and rust prevention are good, thestructure is firm and reliable, and damage is not likely to occur.
本发明公开了一种下水防回流装置，其安装于下水弯管中，该防回流装置包括与所述下水弯管配合安装的内管，所述内管内开设有让液体通过的管状结构，所述管状结构置于所述内管内，并向所述下水弯管的方向延伸设置，所述管状结构的装入所述下水弯管侧的出入水口上安装有摇盖，在防回流装置处于闭合状态时，所述摇盖完全覆盖所述出入水口；本发明在摇盖和内管之间采用扭簧固定，加强了装置的闭合性能，使其不受任何因素都能完美闭合，扭簧的使用提高了装置的使用寿命，且强度高，抗氧化，防锈好，结构牢固可靠，不易损坏。
Drainage backflow preventing device
一种下水防回流装置
XU NUO (author) / WU WENTAO (author) / XU CHANGYOU (author)
2020-06-19
Patent
Electronic Resource
Chinese
IPC:
E03C
DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER
,
Hausinstallationen für Frisch- oder Abwasser
Municipal drainage pipeline flow limiting and backflow preventing integrated device
| European Patent Office | 2022