Abstract: A filter device including at least one filter chamber between a filter plate and a counter plate when the device is closed, into which chamber a suspension can be inducted on a cake side of a filter cloth through at least one filling shoe anchored in the filter plate and clamping the cloth with the filter plate in a sealing manner. The suspension permeates the cloth to the filtrate side, wherein the suspension solid content deposits on the cloth as a filter cake, and the filter and counter plates are offset from each other when the device is open, and the cake is removable from the chamber. In order to simplify the disassembly of the cloth, the shoe is movably anchored in the filter plate, and the shoe is automatically lifted off from the filter plate and the clamping of the filter cloth is released when the device is opened.

Abstract: The invention relates to a filter device comprising at least one filter chamber (7) configured between a chamber side (5) and a membrane side (6) of two parallel filter plates (1) and divided through two filter cloths (4), the membrane sides (6) of the two filter plates (1) each comprising a membrane (3), an outlet (8), and a deviation element (12) attached to the outlet (8) and penetrating the membrane (3). When the filter device is closed, a suspension containing a solid substance can be inducted between the filter cloths (4) in such a way that a filtrate penetrates the filter cloths (4) on the chamber side (5) and on the membrane side (6), while the solid substance is deposited in a filter cake on the filter cloths (4). The filtrate flows initially substantially parallel to the filter cloth (4) towards the outlet (8), is deviated through the deviation element (12) in an outlet direction (9) perpendicular to the filter cloth (4), and flows out through the outlet (8).

Abstract: The invention relates to a filter device comprising at least one filter chamber (7) configured between a chamber side (5) and a membrane side (6) of two parallel filter plates (1) and divided through two filter cloths (4), the membrane sides (6) of the two filter plates (1) each comprising a membrane (3), an outlet (8), and a deviation element (12) attached to the outlet (8) and penetrating the membrane (3). When the filter device is closed, a suspension containing a solid substance can be inducted between the filter cloths (4) in such a way that a filtrate penetrates the filter cloths (4) on the chamber side (5) and on the membrane side (6), while the solid substance is deposited in a filter cake on the filter cloths (4). The filtrate flows initially substantially parallel to the filter cloth (4) towards the outlet (8), is deviated through the deviation element (12) in an outlet direction (9) perpendicular to the filter cloth (4), and flows out through the outlet (8).

Abstract: A filter device including at least one filter chamber between a filter plate and a counter plate when the device is closed, into which chamber a suspension can be inducted on a cake side of a filter cloth through at least one filling shoe anchored in the filter plate and clamping the cloth with the filter plate in a sealing manner. The suspension permeates the cloth to the filtrate side, wherein the suspension solid content deposits on the cloth as a filter cake, and the filter and counter plates are offset from each other when the device is open, and the cake is removable from the chamber. In order to simplify the disassembly of the cloth, the shoe is movably anchored in the filter plate, and the shoe is automatically lifted off from the filter plate and the clamping of the filter cloth is released when the device is opened.

Abstract: A method for filtering a suspension, the suspension initially being inducted into a filter chamber in a direction which is substantially parallel to at least one filter cloth on a filter cake side of same, the filter chamber being configured substantially lens shaped between two parallel filter plates, when a filter device is closed, whereas when the filter device is open, the filter plates are at such a distance that the at least one filter cloth can be removed from the filter chamber, thereafter a filtrate to permeates the at least one filter cloth to a filtrate side of the filter cloth, wherein a solid content of the suspension is deposited as a filter cake on the filter cake side, and the filtrate subsequently flows out of the filter chamber on the filtrate side. The invention also relates to such a filter device.

Abstract: The present invention relates to a process for preparing yellow iron oxide pigments by the precipitation method from iron(II) chloride or iron(II) sulphate raw material and calcium carbonate precipitant.

Abstract: A filter element, for use in a plate filter press for example, includes a membrane supported from a plate and captured, about the periphery of an opening in the plate, by a clamping ring which locates a shaped edge bead on the membrane in a complementary shaped groove in the plate. The clamping ring has a bearing surface, which contacts a surface of the membrane edge bead which is oppositely disposed with respect to the portion thereof which cooperates with the groove in the plate, having an angle of inclination with respect to the plane of the plate which directs forces produced by pressure induced expansion of the membrane to the clamping ring in a generally radial direction with respect to the axis of the opening in the plate.

Abstract: A membrane plate for a filter press includes a plate member composed of a plate wall having a peripheral region provided with a plate wall groove and a plate frame surrounding the plate wall. A flexible press membrane is disposed adjacent at least one side of the plate wall and a holding frame covers a membrane edge bead received in the plate wall groove. A connecting arrangement secures the holding frame to the plate frame and permits transverse movement of the holding frame with respect to the plate wall. The connecting arrangement includes a continuous peripheral groove in the plate frame and a continuous, elastic member supported on the holding frame. The elastic member projects from the holding frame and is received by the continuous peripheral groove.

Abstract: The invention relates to a filter plate for a plate filter press with at least one press diaphragm (6) covered with filter fabric, in which the filter plate (2) and the press diaphragm (6) have at least one shared passage aperture (4), whereby the edge of the aperture (4) of the press diaphragm (6) has a circumferential edge bead (9) which is held in a groove (10) at the edge of the aperture (4) of the filter plate (2) by means of an annular securing component so as to create a seal.

Abstract: A membrane plate to be assembled with further plates to form a filter press in which a respective filter chamber is formed between the membrane plate and each further plate adjacent thereto, the membrane plate includes a plate member composed of a plate wall portion having a peripheral region provided with a groove, and a continuous plate frame portion surrounding the plate wall portion and secured to the plate wall portion at the peripheral region, a flexible press membrane disposed adjacent the plate wall portion to be acted upon by a pressure medium, the membrane having a continuous bead extending around its periphery and seated in the groove, a retaining frame member disposed adjacent the bead and the periphery of the membrane at the side of the membrane directed away from the wall portion, and elements connecting the frame member to the plate frame portion for permitting movement of the frame member transverse to the plate wall portion between a first position in which the frame member presses the bead i

Abstract: A filter cloth securing device attaches a filter cloth in the zone of the slurry port of a filter plate. A plurality of face-to-face arranged filter plates constitute a filter plate stack of a plate filter press. Each filter cloth securing device has two flanged sleeves inserted from either side of the slurry port and a threaded tightening sleeve which passes through the slurry port and which tightens the flanged sleeves to one another to thus clamp the filter cloth against the filter plate face. In the closed state of the filter plate stack face-to-face oriented flanged sleeves belonging to consecutive filter plates define an annular clearance and further, at least one flanged sleeve of the filter cloth securing device has on its outer face at least one protuberance which projects towards the outer flange face of an adjoining flanged sleeve, belonging to a consecutive filter plate. The protuberance ends at a distance from the last-named outer flange face.