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: A plate filter press includes a plurality of face-to-face arranged filter plates movable into open and closed positions. Any two adjoining filter plates together define a filter chamber bounded by a continuous, raised sealing edge carried on at least one of the two adjoining filter plates. Separate heavy liquid intake members constituted by tubular bars are in fluid communication with each filter chamber. The sealing edges are provided with a respective recess extending in a longitudinal direction of the sealing edges. The tubular bars extend in the longitudinal direction and are sealingly received in the respective recesses in the closed position. Each tubular bar has a liquid outlet opening, and each sealing edge is provided with a transverse liquid passage situated between the recess and the filter chamber.

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.

Abstract: A plate filter comprises a plurality of shiftable filter plates and first and second deflecting rolls carried on opposite sides of each filter plate. The axes of consecutive first deflecting rolls lie alternatingly in a first plane and in a second plane spaced from one another. A filter cloth is guided in a zigzag course between consecutive filter plates by the first and second deflecting rolls. A first sprocket is affixed to each first deflecting roll and a second sprocket is mounted on each first deflecting roll for free idling rotation. First and second spaced, elongated, oppositely driven chains are respectively trained in a zigzag course in an alternating sequence about first and second sprockets of first deflecting rolls belonging to consecutive filter plates. The first and second chains are in meshing relationship with the first and second sprockets about which the chains are consecutively trained.

Abstract: A plate filter press has a horizontal guide carrier extending in the length dimension of the plate filter press; a plurality of vertically oriented filter plates shiftably supported on the guide carrier; and a filter plate shifting apparatus for individually displacing the filter plates from a closed side towards an open side of the press. The filter plate shifting apparatus has a motor driving a traveling carrier element and filter plate engaging elements mounted on the traveling carrier element. There is further provided a displacement sensor for emitting signals in response to the motion of the filter plate engaging elements and a monitoring and control device connected to the displacement sensor for receiving its signals for determining the position of the successive traveling paths of the filter plate engaging elements with respect to the guide carrier to determine the required displacement characteristics for each filter plate.

Abstract: A filter press includes a plurality of filter elements (filter plates and filter frames) supported in the press stand for displacement along the length of the press. A guide roller is supported on each filter element alternatingly at opposite sides thereof. A continuous filter cloth is trained about each guide roller for guiding the filter cloth in a zigzag course between all adjoining filter elements. At least some of the guide rollers are directly driven by a driving mechanism. The driving mechanism has a sprocket drivingly connected with each driven guide roller and having a rotary axis in alignment with the rotary axis of the associated driven guide roller and a guide wheel mounted on each filter element which supports a driven guide roller. Each guide wheel has a rotary axis spaced parallel from the rotary axis of the respective sprocket.

Abstract: A filter press includes a plurality of filter plates displaceable parallel to the filter press length towards the open side and in an opposite direction towards the closed side of the filter press and a filter plate shifting apparatus for individually moving the momentarily outermost filter plate from the closed side towards the open side.

Abstract: In a filter plate-and-diaphragm assembly for a filter press, which assembly includes a filter plate having a depressed base and a thickened marginal region defining a circumferential sealing edge, and a pressure diaphragm disposed at each side of the plate and having a cup shape to conform to the depressed base of the plate, the, or each, diaphragm is provided with a foldable tongue extending at least over the sealing edge along one side of the plate and securing the diaphragm to at least one lateral edge face of the plate.

Abstract: A plate filter press has a plurality of filter plates forming a filter plate stack having opposite ends; an overhead guide carrier supporting the filter plates for individual displacement thereof in a direction parallel to the longitudinal axis of the plate filter press; a longitudinally displaceable head plate arranged at one end of the filter plate stack and having a support face arranged for engaging face-to-face the filter plate stack; an end plate arranged at the other end of the filter plate stack and unshiftably supported on the guide carrier; a power device attached to the head plate; and pull rods attached to the end plate and to the power device for urging, by the power device, the end plate and the head plate towards one another for pressing the filter plates to one another in the closed state of the plate filter press.

Abstract: A filter press has a plurality of filter plates which are individually shiftable by a gripper of a moving mechanism. The filter plates can be releasably locked to one another by a locking hook pivotally supported on each filter plate and engageable behind a detent pin carried by a respective adjoining filter plate. Each filter plate further has a pivotal detent lever operatively connected with the locking hook of the same filter plate and the detent levers of the respective two adjoining filter plates. When the filter plates are close together, the detent levers, by mutual interaction, are pivoted out of the traveling path of the gripper of the moving mechanism.

Abstract: A plate filter press has a horizontal guide carrier; a plurality of filter plates shiftably supported on the guide carrier; a projection affixed to each filter plate; and a filter plate shifting device which includes a carrier element supported for displacement parallel to the guide carrier; a drive for moving the carrier element back and forth; as well as a shifting element and a reversing element mounted on the carrier element and arranged for engaging the projection of the filter plate to be shifted. The shifting element and the reversing element each are single-armed levers pivotally secured to the carrier element. The levers have respective free ends oriented towards one another. A bell crank lever is pivotally mounted on the free end of the reversing lever.

Abstract: A plate filter press has a plurality of filter plates; an overhead guide carrier extending in the length dimension of the press and a suspension displaceably supporting each filter plate on the guide carrier. The filter plates are oriented, with their flat sides, perpendicularly to the length dimension. The suspension comprises first, second and third guide tracks affixed to the guide carrier and extending parallel to one another in the length dimension. The first and second guide tracks define a first guide plane, while the third guide track lies in a second guide plane extending parallel-spaced from the first guide plane. Each filter plate has spaced first, second and third guide elements (such as rollers) engaging the first, second and third guide tracks, respectively. The first and second guide elements are spaced transversely to the length dimension; the third guide element is spaced from the first and second guide elements in the direction of the length dimension.

Abstract: A plate filter press has a plurality of filter plates arranged in a face-to-face series and mounted to be movable towards and away from one another in the longitudinal direction of the filter press. The latter further has a closing device carried by a closing yoke mounted to be movable in the longitudinal direction; a pressure plate disposed at one end of the filter plate series and connected to the closing yoke and mounted to be movable in the longitudinal direction; and an end plate disposed at the other end of the filter plate series. The closing device, when energized, presses the filter plates by the closing yoke and the pressure plate to one another and against the end plate. The end plate is pivotally and linearly displaceably supported to allow its angular displacement with respect to the longitudinal direction and to further allow its shifting in the longitudinal direction.

Abstract: A filter press has a support frame; a plurality of face-to-face oriented filter plates movable towards and away from one another and forming a filter plate stack; a closing device connected to the filter plates for exerting thereon a pressure with which the filter plates are urged to one another; a closing pressure regulator coupled to the closing device; a stationarily supported path-sensing signal transmitter connected to the closing device; and a sensor arm connected at least indirectly to one of the filter plates for displacing the sensor arm by, and as a function of the motion of, that filter plate. The sensor arm is coupled to the path-sensing signal transmitter for controlling the closing pressure of the closing device by the signal transmitter as a function of the position of the sensor arm.

Abstract: A plate filter composed of horizontal filter plates arranged in a vertical stack and each defining a fluid-tight partition and being provided with fluid flow channels at both its upper and lower faces, a plurality of frame members each disposed between a respective adjacent pair of filter plates, a pressing unit arranged to press the filter plates and frame members toward one another in a direction to close the filter, cloth guided by rollers to traverse a path extending past each face of each filter plate in the region between each such face and the frame member adjacent thereto, and a suspension arrangement composed of a chain of links supporting the filter plates and the frame members when the filter is open.