Abstract: Gas-tight decanter centrifuge process for separation of volatile organic compounds from drilling fluid. A method is described for removing low gravity solids from a mixture of recovered oil based drilling fluid and low gravity solids and diluent. A gas-tight decanter centrifuge that is designed and constructed for this purpose in a gas-tight manor so to ensure vapour cannot escape the decanting process, and foreign oxygen cannot enter the process under normal operating conditions.

Abstract: Embodiments of the present invention generally relate to methods and apparatus for centrifugal separation. In one embodiment, a separator includes an outer tubular having ends sealed from the environment and an inner tubular. The inner tubular is disposed within the outer tubular, has ends in fluid communication with a bore of the outer tubular, and is attached to the outer tubular. The separator further includes an inlet. The inlet is disposed through a wall of the outer tubular, in fluid communication with a bore of the inner tubular, and tangentially attached to the inner tubular so that fluid flow from the inlet to the inner tubular is centrifugally accelerated. The separator further includes a gas outlet in fluid communication with the outer tubular bore; and a liquid outlet in fluid communication with the outer tubular bore.

Abstract: A horizontal centrifugal separator is provided in which the hermeticity of the casing can be improved by using sealing means having a simple structure. The horizontal centrifugal separator is configured such that a groove formed along a joint surface between an upper casing and a lower casing constituting the casing is outwardly bent near an opening of the casing, and that an elastic sealing member is disposed in the groove and an end portion thereof abuts against a sealing surface provided on a ring member which is provided so as to surround the outer circumference of the opening of the casing and is pressed against the casing. In this case, surface sealing is constituted by the end portion of the elastic sealing member and the sealing surface of the ring member. In this manner, the hermeticity can be improved without using a sealing member having a complicated structure.

Abstract: A centrifugal separator assembly including a polygonal separator chamber formed of planar wall sections joined with each other to provide a substantially gas tight structure and having at least four pairs of planar opposite wall sections. The chamber includes a tapered portion formed by having a first inward bending in each of the wall sections. The tapered portion extends as a discharge channel for separated particles from the separator chamber, which discharge channel is formed of first and second pairs of opposite wall sections being perpendicular to each other. In the discharge channel for separated particles, the first pair of wall sections extends into the area between the second pair of wall sections.

Abstract: Embodiments of the present invention generally relate to methods and apparatus for centrifugal separation. In one embodiment, a separator includes an outer tubular having ends sealed from the environment and an inner tubular. The inner tubular is disposed within the outer tubular, has ends in fluid communication with a bore of the outer tubular, and is attached to the outer tubular. The separator further includes an inlet. The inlet is disposed through a wall of the outer tubular, in fluid communication with a bore of the inner tubular, and tangentially attached to the inner tubular so that fluid flow from the inlet to the inner tubular is centrifugally accelerated. The separator further includes a gas outlet in fluid communication with the outer tubular bore; and a liquid outlet in fluid communication with the outer tubular bore.

Abstract: An axial flow-type pump apparatus with gas seals for separating immiscible flowable materials having different specific gravities and a discharge manifold connected to the fluid pump for drawing off the flowable material having the heavier specific gravity with greatly improved efficiency, and pump and apparatus longevity. The flowable material pump employs a rotatable impeller mechanism having a hollow core and a decreasing axial pitch in the direction of materials flow. The flowable materials are introduced into the inlet end of the rotatable impeller to produce a high velocity swirling action and a low pressure area along the longitudinal axis of the flow line, to generate a high centrifugal force as the flowable materials move axially and cause the flowable material having the heavier specific gravity to migrate to the perimeter while the lower specific gravity materials migrate to the center of the perimeter, whereupon they are separately discharged.

Abstract: A centrifugal drum for a separator having a vertical axis of rotation, including a drum bottom part and a drum cover fastened to the drum bottom part by a locking ring. Also included is a centering ring arranged between the drum bottom part and the drum cover such that while the centering ring is being pretensioned, it sealingly and centeringly braces the drum bottom part and the drum cover relative to one another.

Abstract: A blood separation chamber comprises a base that includes formed walls that define a hub. A separation channel extends about the hub. A flow passage extends between the hub and the separation channel. The hub enables attachment of external tubing to convey blood to and from the separation channel through the hub.

Abstract: A simple but still effective sealing device to separate two openings (4, 5), which are arranged at a distance from each other in the outer casing (3) of a shaft suspension unit (1), which supports a shaft (2) of a centrifugal separator in a bearing (8, 9), the shaft extending axially through at least one opening (4) into a space surrounding the shaft (2) in the outer casing (3). The sealing device is provided with sealing elements (12, 13), one connected to the outer casing (3) and one connected to the shaft (2), which surround the shaft (2) and divide the space in two departments (15, 16) connected to one opening each (4, 5, respectively). The sealing elements form between themselves a narrow gap (14) surrounding the shaft (2), which prevents the flow of gas between the departments (15, 16).

Abstract: A centrifuge includes an outer frame defining therein a rotor chamber, a centrifuge rotor detachably disposed in the rotor chamber, and a door slidably mounted on the frame for opening and closing the rotor chamber. The door projects outwardly from the frame when it is disposed in an open position. Since the door is received within the frame when it is fully closed, it does not enlarge the necessary space for installation of the centrifuge.

Abstract: A seal system for mounting a centrifuge within an opening between an area which is sterile and a contiguous area wherein the rotating basket of the centrifuge and its enclosure are accessible within the sterile area and are hermetically sealed with respect to the contiguous area.

Abstract: A removable seal assembly for a centrifuge door includes a seal support plate slidably received in guide rails mounted to the undersurface of the door. The plate has a central opening lined with an annular seal support element. A flange secures the plate to the edge of the door. The support plate is slidably removable from the guide rails.

Abstract: A centrifuge having an access opening is closed by a door having a chamber defined on the interior thereof. The chamber is connectable to a low pressure region so that the chamber may be evacuated.