Abstract:
The present invention relates to a filtering chip conveyor that comprises: a conveyor tank arranged to retain a cutting fluid containing chips; and a continuous hinge belt at least party disposed inside the conveyor tank, the belt being arranged to rotate and to make turns at a tail end and at a discharge end, leaving a space between an upper flight and a lower flight of the belt. The chips are arranged to be transported by the belt to the discharge end to be discharged off the conveyor. The conveyor further comprises at least one filter box for filtering the cutting fluid that is to be discharged off the conveyor through the filter box. The filter box comprises a filter plate having photo etched or chemically milled orifices having a minimum aperture dimension of less than 0.3mm and an open proportion of at least 15%. The filter box is located between the upper and the lower flights of the belt.
Abstract:
Das Verfahren dient zur Herstellung eines Siebes (1), wie es z.B. bei der Sortierung von zur Papiererzeugung geeigneten Faserstoffsuspensionen eingesetzt wird. Es enthält mindestens zwei mit Öffnungen versehene flächig miteinander verbundene Siebschichten (2, 3, 4). Die Öffnungen werden vor dem Verbinden der Siebschichten in diese eingebracht. Sie sind so ausgestaltet und angeordnet, dass Sieböffnungen (7, 8) entstehen, die durch alle Siebschichten (2, 3, 4) hindurchgehen.
Abstract:
The present invention involves a filter element assembly (10), which is useful in removing undissolved adhesive bodies from oil. The assembly includes at least one cylindrical body 11 of principal filter medium for removing particulates from oil. Body 11 has an inlet end and an outlet end. A secondary filter medium 20 for removing undissolved adhesive bodies from the oil is located around the sides and across the inlet end of the principle medium (11). A flow affording spacer 926) is disposed between the sides and the inlet end of the principal medium (11). A preferred spacer (26) is a non-woven expandible mesh present in a partially expandedstateand having elements (27,28) grouped in first and second sets in which the elements (27) in the first set are laid atop the elements (28 ) in the second set. A readily cleanable containment vessel (39) for the filter element assembly (10) includes a tubular body (41) which is releasably connectible in liquid tight relation to a bottom cover (44) for the body (41).
Abstract:
The invention relates to a sieve (1) in which the passage cross-section of the sieve openings (4) can vary automatically in accordance with an inherent variable of the medium passing through the sieve (1). When using one such sieve (1) in a technical process, the sieve (1) is automatically cleaned during the process by the parts deposited thereon.
Abstract:
The invention relates to a filter (1), which is characterised in that the size of the cross-section of the filter openings can be modified in conjunction with an inherent variable of the medium that traverses the filter. By using a filter (1) of this type in a technical process, deposits on said filter (1) are automatically cleaned during the course of the process.
Abstract:
A suction strainer including a hollow internal core tube and an external filtering structure built around the internal core tube. A plurality of flow or core openings are defined through the core wall of the internal core tube core. In some cases the flow openings through the side wall are constructed and arranged such that there is somewhat less open area near the downstream end than the upstream end of the internal core tube, and the amount of open area tapers between the upstream and downstream ends. As a result, when liquid is drawn into the internal core tube through the plurality of openings, a substantially uniform inflow distribution may be defined along substantially the entire length of the internal core tube. The internal core tube further functions as a rigid structural support for the external filtering structure.
Abstract:
The invention provides a method of separating, at least part of one or more components, from a mixture of components, the method comprising exposing the mixture to a porous barrier, the barrier being formed of a material structure having, or behaving in the manner associated with, a negative Poisson ratio. In this way, particularly through the use of auxetic materials, improved separations, improved de-fouling of barriers and a variety of other beneficial properties can be obtained.
Abstract:
A screen cylinder or plate with a screening surface (11) for separating accepts from rejects, the surface including a number of parallel macro grooves (22) and a number of parallel micro grooves (24) formed within each macro groove generally transverse to the flow direction. The macro grooves induce shear stress in the reject material preventing it from forming a mat on the screening surface. The micro grooves induce micro turbulence into the pulp at the screening openings (27) improving accepts flow through the openings. Each micro groove within a macro groove is located further away from the accepts surface (12) moving in the flow direction. The contour of each micro groove preferably includes an upstream wall (39), a sloped downstream wall (40), and a depression (41) therebetween. The screening openings are provided in the depression. It is possible to screen with a rejects rate of about 3-10 % at debris removal efficiency of above about 85 %.