| 摘要 |
The present invention relates to a screen apparatus for a sewer, wherein the screen apparatus comprises: multiple holding bars (10) having holding grooves (11) therein and installed at the top of the exposed cross section of the sewer (70) at regular distances, wherein the holding groove (11) is formed by upwardly folding the lower side of the holding bar (10); a supporting beam (20) held across the holding grooves (11) of the respective holding bars (10) and horizontally installed at the top of the exposed cross section of the sewer (70); a first screen plate (30) formed into a shape corresponding to the shape of the exposed cross section of the sewer (70), coupled to be hinged at the supporting beam (20), and able to rotate; a second screen plate (40) formed to have a height smaller than the height of the first screen plate (30) and hinged at the lower side of the first screen plate (30) so as to be opened only by the hydraulic pressure of sewage inside the sewer (70) usually; and a gas shock absorber (31) of which the rod (312) is linked with the inside of the second screen plate (40) and the gas cylinder (311) is connected to be linked with a bracket (50) fixed to the inner wall of the sewer (70) so that reliability in the operation of the first screen plate (30) is improved. |
