Cattle Stable provided with manure cellar in which an underground vacuum prevails

摘要

A cattle shed has a stable floor 3, a manure pit 5 is present below the stall floor, and a roof 9 at a distance above the stable floor. The cattle shed has open sides 11. The stall floor 3 is provided with manure / unrine-discharge openings 13. The dung cellar 5 is provided with an air exhaust opening 15 on which a fan 17 is connected for the removal of contaminants from the air. The fan is just sufficiently powerful to be able to suck sufficient air to ensure that the air pressure in the manure pit 5 is lower than the air pressure in the cattle shed above the stall floor 3 are pressure sensors 25 present in the manure pit 5 and above the stall floor 3 in the cattle shed, further pressure sensors 27 are provided. This control unit is designed such that it switches on the fan 17 when the air pressure is measured by the pressure sensors is greater than or equal to the air pressure measured by the additional pressure sensors.