Appliance for introducing compressed air to predetermined soil depths

摘要

The invention proposes a compressed air vessel designed with two pressure chambers, these two pressure chambers being connected to one another via a control, in such a way that, when the second pressure chamber is being filled via a non-return valve, a filling of the first pressure chamber also takes place when there is the necessary pressure difference between the first and second pressure chambers. If the connection of the second pressure chamber to the first air line and therefore to the probe is subsequently opened, a violent emptying of the second pressure chamber takes place, without the possibility that the first pressure chamber will empty. At the same time, as a result of the pressure difference obtained thereby between the second and first pressure chamber, the first air line, that is to say consequently the interior of the second pressure chamber, is closed off relative to the probe and simultaneously the first pressure chamber is opened to the probe via the second air line, the supply of filler into the first pressure chamber taking place and therefore these fillers being conveyed from the first pressure chamber to the probe via the second air line.