Sieve grid, especially a sieve for rain water

Abstract

Abstract The sieve grid (5) has a sieve bottom (7) which consists of grid bars (9) and which can be arranged horizontally or at a slight inclination. The sieve grid (5) has a cleaning car (25) which executes a to-and-fro motion between the discharge side (21) and the inlet side (22). The cleaning car (25) has two bogies (26), between which a cleaning rake (27) with a rake ridge (28) and fixed teeth (30) is mounted. The teeth (30) have a shallow flank (35) towards the inlet side (22) and a steep flank (34) towards the discharge side (21). The result is that, when moving towards the inlet side (22), solids lying on the grid bars (9) are lifted by the shallow flank (34) and eventually displaced by the flow, whereas, when moving towards the discharge side (21), the steep flank (34) pushes the solids in front and into a discharge shaft (20). Because of the small moving masses of the cleaning car (25) and the teeth (30) always penetrating between the grid bars (9), the clearing speed can be increased, whereby the clearing performance of the sieve grid (5) is also improved. <IMAGE>

Inventors

• 👤 Louis Gresa

Bibliographic Details