A device for washing the bottom of a liquid storage reservoir, particularly sewage from stormwater drainage and combined sewage systems.

摘要

A device for washing the bottom of a liquid storage reservoir, particularly sewage from stormwater drainage and combined sewage systems, which has a washing chamber closed at the top and adhering to the wall of the storage chamber of the reservoir located opposite the bottom outlet. Through this wall, along the edge with the bottom of the storage chamber, outlet openings are leading via the sewer trap system. Under its ceiling, the washing chamber is connected with a source of negative pressure and with an automatic emptying process control system, which contains a pipe conduit mounted under the ceiling and hermetically connected with the vertical section of the impulse pipe whose end leads to the zone of the bottom level of the storage chamber on the side of the reservoir bottom outlet. It is characterised in that the sewer trap system of the outlets (8) has a cavity (13) leading to the surface of the bottom of the storage chamber (2); the pipe (10) of the emptying process control system has an additional vertical branching through the section of the aeration pipe (12), located in the storage chamber (2) at the wall separating (7) from the washing chamber (6) in the area of the elevation of the cavity (13). The aeration pipe (12) is hermetically connected with the pipe (10) via a load-reducing unit (ZO) and its length is selected so that, when the washing chamber (6) is full, the end of the aeration pipe (12) is located in the space of the cavity (13).