摘要:
Apparatus for thickening papermaking pulp in water has a pair of spaced-apart rolls (20, 22) and a woven wire belt (30) trained around these rolls. The pulp is supplied at the first roll (20) for centrifugal extraction and is carried by the belt to the second roll (22) for further water extraction and thickening, and is then discharged from the apparatus. In one embodiment, the first roll (20) is formed with an open surface, and the suspension is delivered to the belt at least partially by flowing through the first roll from a headbox (40) in the on-running wedge zone. The second roll (22) is porous and has auxiliary water-removing appliances associated therewith, including blow boxes for forcing air either inwardly or outwardly of the second roll.
摘要:
An electroosmotic dewaterer for dehydrating a liquid mud by supplying the liquid mud into a space between facing anode and cathode electrodes, applying d.c. voltage across said electrodes so as to gather the water content of the liquid mud to the cathode electrode by means of electroosmotic action and filtering the liquid through a filtering medium, wherein the cathode electrode is equipped with means for removing a deposit formed on the surface thereof while the dehydrating operation is carried out.
摘要:
O Eine Doppelbandpresse mit zwei über Trommeln geführten umlaufenden und einem von diesen begrenzenden Spalt für ein durch diese Preßzone geführtes Haufwerk als Preßgut, wobei einem der Bänder auf der vom Haufwerk abgekehrten Seite ein Stützelement zugeordnet ist, soll bezüglich der Entwässerungsleistung verbessert werden. Hierfür ist das Stützelement eine in Förderrichtung (x) gekrümmte Stützplatte (20), die einem siebartigen Band (13) in der Preßzone anliegt sowie Durchbrüche (60) aufweist. Das Band (13) liegt einer Gleitfläche der gebogenen und perforierten Stützplatte (20) auf, deren Krümmungsradius (r) in Förderrichtung (x) abnimmt. Die Stützplatte (20) besteht aus einem flexiblen Werkstoff, so daß ihr Krümmungsradius (r) einstellbar ist
摘要:
A liquid separating device (1) for processing a mixture material (3) containing both solid and liquid materials (3a,3b), in order to separate liquid material (3b) from the solid material (3a), the liquid separating device (1) includes a support frame (5), a series of liquid separation assemblies (7a,7b) and a corresponding guiding assembly (19) between each pair of liquid separation assemblies (7). The liquid separation assemblies (7) are disposed about the support frame (5) in a cascading configuration, and the passage (13) of each liquid separation assembly (7) is narrower in width than the passage of a preceding liquid separation assembly (7) so that each subsequent liquid separation assembly (7b) is enabled to extract more liquid material via an increased wringing pressure resulting from a thickening of the remaining mixture material (3) to be processed and the narrower subsequent passage (13b) through which it is channeled and pressed.
摘要:
A sealing arrangement (36) for a press (1 ) comprises a first sealing ring (54), in which a replaceable first sealing strip (76) is fixed, said first sealing strip (76) being arranged to slide towards the dewatering drum (2) while it rotates, and a second sealing ring (54) arranged at an axial distance from the first sealing ring (52), in which second sealing ring (54) a replaceable second sealing strip (92) is fixed, said second sealing strip being arranged to slide against the dewatering drum (2) while it rotates.Both the first and the second sealing rings (52, 54) are fixed in a common holding device (58) that is located at the first sealing ring (52). The second sealing ring (54) is fixed in the holding device (58) by means of at least one spacer element (102). At least a part (60, 62) of the first sealing ring (52) is detachable from the holding device (58) for being made to slide along said at least one spacer element (102) in order to allow replacing the first sealing strip (76).
摘要:
The invention relates to a method for separating dry matter from a medium, comprising the steps of providing a separation chamber defined by a plurality of rollers, wherein said chamber is capable of being pressure regulated, and wherein at least one of said rollers is a pore roller having a surface with pores allowing permeability for the medium, and furthermore having at least one channel in fluid contact with the pores of the surface, arranging at least one filter belt so that it passes between at least one set of rollers consisting of a pore roller and one other roller, establishing a pressure difference across the at least one filter belt, contacting at least one filter belt with a suspension of dry matter and medium accumulating dry matter on the at least one filter belt, obtaining a filter cake on said filter belt, and passing the at least one filter belt and filter cake through the at least one set of rollers, whereby medium is separated from the filter cake. Furthermore, the invention relates to an apparatus for carrying out the method and use of said apparatus.
摘要:
The invention relates to a device for dehydrating sludge, such as occurs in sewage treatment plants in the form of dilute sludge. The receptacle for the sludge contains a filter surface which has openings for the passage of liquid. The filter surface in turn is substantially circular and can be rotated about an axis (21) which runs vertically to the filter surface. The axis (21) of the filter surface (2) is tilted in relation to the horizontal and is caused to rotate by a drive device (3). The disc-shaped filter surface (2) is located in a container (11) which has a base (13) and a lateral wall (12). A supply line (4) for the sludge and an outlet (41) for the separated water pass through said lateral wall.
摘要:
The present invention concerns a method and an apparatus for separating dry matter from liquid, comprising providing an enclosed separation environment capable of being pressure regulated, and in said enclosed separation environment contacting at least one filter with a suspension accumulating dry matter on the at least one filter and passing the at least one filter through at least one set of rollers, whereby liquid is removed from the at least one filter, followed by removing the substantially dry filter cake from the at least one filter, wherein the above is performed in the same enclosed separation environment either under vacuum or overpressure.The invention further relates to obtaining a dry filter cake and the use of said filter cake, method and apparatus in, for example the food industry.