Abstract: In an apparatus for separating off the liquid portion from the solid portion of two-phase systems, in particular ceramic slips, having a screw and having filter surrounding the screw, a two-stage construction of the apparatus is realized by a first filter and a second filter section.

Abstract: A refuse compacting device has dewatering capability and in some cases refuse transporting capability wherein refuse is fed into an outer cylinder in which an axially elongate piston is arranged. The piston is capable of reciprocating motion by a drive motor and threadable piston rod and nut arrangement, whereby refuse is forced towards an outlet of the cylinder. The cylinder is provided with apertures for allowing water to escape from the wet refuse as it is compacted against a conically shaped throttling member at the outlet of the cylinder.

Abstract: An apparatus for production of dewatered and loosened biopulp, wherein precrushed raw biopulp is press fed by pistons (2) against a pair of counter-rotating press rolls (4, 5) between which the biopulp is dewatered. The pulp is then fed into a backpressure vessel (7) maintained at an overpressure, which prevents water from entering the backpressure vessel and remoistening the biopulp. The biopulp leaves the backpressure vessel through an air-tight compartment feeder (9) constructed like a revolving door. The press rolls include one of solid metal (5) and another (4) with a number of elastically mounted plates which can move radially in response to a radial load.

Abstract: Process for compacting and removing liquid from liquid containing waste materials including the steps of feeding the waste materials into compaction chambers, simultaneously compressing and heating the waste materials inside the compaction chambers, and removing liquid from the waste materials during the steps of compressing and heating.

Abstract: A process is proposed for the dewatering of compressibly dewaterable materials, in particular waste from the processing of paper material, which enables a very high degree of dewatering so that the waste can be readily disposed of, e.g. dumped. For this purpose, the material to be dewatered is initially pre-dewatered by gravity, and usually also by compression, in a transportation section (5). This pre-dewatering can take place in a continually operating feed section (7) through a perforated sieve jacket (10). The material then reaches a press section (6) in which a discontinuously working pressing device is in operation. Further improvements in the dewatering performance are possible by various embodiments of the corresponding pressing elements (13,14). The invention relates to both the process and the device for implemention of the process.

Abstract: A metal shavings and chips compactor for extruding oil from metal chips and shavings and compacting the metal into easily transportable pellets. A compactor cylinder contains a piston and has an opening through which an auger feeds metal chips and shavings. A gate closes an end of the cylinder. A first hydraulic drive drives the piston under low pressure to close the opening and apply a first compacting pressure on the metal to form a loosely compacted pellet in the cylinder. High pressure then operates the piston to form a compact metal pellet substantially void of interstices. A second hydraulic drive opens the gate; the piston is operated at low pressure to discharge the compact metal pellet from the chamber and oil is collected below the cylinder. The compacting pressures are achieved through mechanical advantages provided by the size of the piston to that of the first hydraulic drive.

Abstract: A dejuicing press has a cylindrical main pressing chamber defined by a cylindrical dripping grate. A composite piston arrangement is used in the chamber which includes an internal piston surrounded by an external annular piston. Separate drives are provided for the two pistons so that they can be moved together or separately in the same direction or in opposite directions to effect the various stages of a pressing cycle. The press may also have a pre-pressing chamber which feeds the main pressing chamber and in which a pre-pressing piston operates, and a transfer chamber at one end of the pre-pressing chamber in which there is a third piston.

Abstract: The device of the present invention removes suspended solids from a liquid medium, such as particles in an oil-based sludge. The device includes a filter chamber having an inlet for introducing liquid into the chamber, with the liquid containing suspended solids. The chamber also has an outlet for releasing filtered liquid which is substantially free from suspended solids. The liquid coming into the chamber is forced through a filter element to remove the suspended solids therefrom. The removed solids are compressed in the chamber by a reciprocating piston. When a sufficient quantity of suspended solids accumulate within the chamber, a discharge valve is opened and the compressed solids are discharged from the chamber. The device is operated automatically by a computer, which controls a series of operation cycles, including normal filtering operation, compression of solids, purging of solids, and cleansing of the filter element.

Abstract: An oil filter crushing apparatus and method utilizing a housing defining an interior space and a bottom surface, a crushing member fitted within the housing having a crushing surface and defining a slot opening through the crushing surface, a puncturer having a point and movably attached to the crushing member within the slot opening so that the puncturer is behind the crushing surface in a retracted position and at least the point of the puncturer is forward of the crushing surface in a puncturing position.

Abstract: The invented device includes a chamber in which articles to be crushed are placed, a bulkhead at one end of the chamber, a plunger operating in the chamber to compress articles against the bulkhead, a collection area adjacent to the chamber for collecting liquid extracted from the articles and also for collecting the articles after they have been crushed, and a plate that sweeps any liquid and the articles from the collection area into appropriate receptacles.

Abstract: A bar grid is formed with multiple vertical rods supporting multiple horizontal roll formed elements with a flange at a front edge of each element. The grid is mounted in a water effluent stream on each side of a solid filter screen or grinder and funnels solid material down to the compactor without buildup of solids on the grid screen.

Abstract: An apparatus for separating, by pressing, liquid and solid fractions intimately associated in a heterogeneous mixture, such as for example juices, pulps, stones, pits, pips, stalks and vegetable elements of fruits such as wine grapes is characterized in that a vessel (14) is provided having perforate side walls (15, 16) and bounded on its open upstream end by a piston-like member (10, 11) and on its open downstream end by a conical outlet member (50) defining an annular outlet passage, the vessel being filled with the heterogeneous mixture in an upstream-downstream direction thereof, and the vessel then being moved (30, 31) in the opposite, downstream-upstream direction so that the heterogeneous mixture is compressed between the piston-like member (10, 11) and the conical member (50), the pressing force being regulated and modulated for preventing deleterious over-pressing.

Abstract: The invention is an improved compression member for use in the packaging of insulation material. The compression member includes a plurality of curvilinear finger members defining a plurality of voids extending in the machine direction of the insulation material. The finger members and defined voids enhance the compression operation by encouraging an even release of compressed air across the width of the insulation pack and by guiding the insulation material into the packaging apparatus in a desired orientation.

Abstract: A refuse compaction unit comprises a refuse inlet, a compactor located below the refuse inlet and communicating therewith and an outlet communicating with the compactor on the opposite side thereof from the refuse inlet, the compactor being constituted of at least one comb-like rotor consited of a plurality of outwardly projecting blades and at least one comb-like stator acting as a partition between the refuse inlet and refuse outlet and having a plurality of teeth with which the blades of the comb-like rotor interdigitate.

Abstract: A refuse compaction unit comprises a refuse inlet, a compactor located below the refuse inlet and communicating therewith and an outlet communicating with the compactor on the opposite side thereof from the refuse inlet, the compactor being constituted of at least one comb-like rotor consisted of a plurality of outwardly projecting blades and at least one comb-like stator acting as a partition between the refuse inlet and refuse outlet and having a plurality of teeth with which the blades of the comb-like rotor interdigitate.

Abstract: A press for extracting fluid from fluid-containing matter so as to separate the fluid from the remaining matter, particularly for dejuicing of agricultural products, primarily fruit, includes a rotatably supported container, and at least one flexible membrane which can be actuated by exerting pressure thereon. The membrane is disposed in the container, and subdivides the container so as to define a pressure chamber and a press space therein. At least one wall surrounds the press space, and the pressure chamber has an inlet conduit and an outlet conduit for a pressure medium. Flexible drainage devices are located at least partly on the wall, and extend into the press space.

Abstract: Apparatus for conveying and dewatering wet coarse screenings debris comprises a drag chain conveyor having a conveying flight. A pressing unit is mounted above the conveying flight and exerts a downward pressure on the debris. A trough having a perforated bottom is mounted beneath the conveying flight in the vicinity of the pressing unit.