Abstract: A filtration apparatus and a method for discharging filter cake from a filtration vessel of the filtration apparatus, the method including loosening filter cake from filter elements of a filtration vessel; conveying the loosened filter cake from the filter vessel towards a discharge shaft, which discharge shaft is in pressure communication with the filter vessel, is vertically disposed, and includes a bottom end having closure means; sensing the height of the filter cake within the discharge shaft; and cyclically opening and closing the closure means thereby discharging the filter cake by pressing or blowing out the filter cake due to the pressure within discharge shaft, the closure means being opened for a period of open time in response to sensing a selected maximum height of filter cake within the discharge shaft whereafter the closure means is closed automatically.

Abstract: An apparatus for diaphragm filtration is provided with at least one disc-shaped supporting plate having a channel arranged at least on one side thereof. The channel is connected to an inlet port and an outlet port which preferably are arranged diametrically opposite each other at the periphery of the supporting plate, while over the channel a diaphragm is applied which is supported by a permeable layer onto a further supporting plate and which closes off the space taken in by the permeable layer and which space is connected to a filtrate discharge.

Abstract: Disc-shaped filter element with a hollow boss member through which the filtrate is to be discharged, and which filter element is divided into sectors by means of radially extending flexible sealing members, along with sealing members and along the periphery of the element U shaped channels are formed, while each sector communicates with the boss member by means of filtrate outflow pipes extending along the radial sealing members and protuding into the boss member.

Abstract: An apparatus for filtering liquids comprises a substantially cylindrical shaped and horizontally placed filter-casing in which at least one supporting member is journaled for rotation substantially about the axis of the casing. The supporting member is provided with a number of hollow rotating shafts, evenly spaced around its axis of rotation, and each shaft carries at least one disc-shaped filter-element. The filtrate discharge from the disc-shaped filter elements passes through the hollow rotating shafts to an outlet-conduit mounted stationary with respect to the supporting member. A conveying trough provided with a conveying screw is arranged substantially in aligmment with the axis of rotation of the supporting member to transport the filter-cake dislodged from the filter-elements and received by the trough out of the filter-casing.