Abstract: A centrifuge with controlled discharge of dense materials disclosed. A centrifuge includes a fluid separation wall placed within a sleeve to form a containment zone therebetween. The fluid separation wall aligns and rotates parallel to an axis of rotation. A receptacle forming a part of the fluid separation wall includes a void area. An opening extending through the fluid separation wall from the void area to the outer surface of the receptacle transports the more dense material to the containment zone. A valve ring forming a part of the fluid separation wall includes a valve orifice. The valve ring aligned perpendicular to the axis of rotation and slides along the fluid separation wall to move between open and closed positions. The valve orifice aligns with the opening such that the more dense material exits the fluid separation wall and moves into the containment zone.

Abstract: The invention relates to a device and method for milking animals, in which the milk is removed is conveyed though a filter element. Any material which is deposited on the filter element is detected and, if appropriate, identified. After detection is complete, the direction of flow through the filter element is reversed, so that filter material is rinsed clean. The invention also comprises a contamination meter for user in die device and method mentioned above.

Abstract: The invention relates to a device and method for milking animals, in which the milk which is removed is conveyed through a filter element. Any material which is deposited on the filter element is detected and, if appropriate, identified. After detection is complete, the direction of flow through the filter element is reversed, so that the filter material is rinsed clean. The invention also comprises a contamination meter for user in the device and method mentioned above.

Abstract: Method and device (21) for the supply of control liquid to a rotor of a centrifugal separator, which device (21) includes a cylinder (25), in which a movable wall element (26) is arranged, which axially delimits a storing chamber (29) in the cylinder (25). In the storing chamber (29) a predetermined volume of control liquid is stored. Control liquid is pressed out of the storing chamber (29) into the rotor during axial displacement of the wall element (26). Furthermore, the invention includes a centrifugal separator, which is provided with such a device (21). A portion of the control liquid in the storing chamber (29) is pressed upon displacement of the wall element (26) a first distance out through a first outlet passage (33) in the device with a high flow. The first outlet passage (33) is then closed when the wall element (26) has been displaced this distance.

Abstract: A separator includes a housing, a basket rotatably mounted in the housing and a movable weir member. The basket has an upstream end portion, a downstream end portion and an intermediate tubular portion that includes or forms a screen deck. The weir member is movable between a first position where a portion of the weir member extends radially inward relative to the inner surface of the downstream open end portion and a second position spaced from the first position. In this manner, the weir member forms a movable dam adjacent the downstream end portion of the basket. In operation, feed material is fed into the basket as the basket is rotated. The heavy fractions of the material pass transversely through the basket (i.e., the tubular portion that forms a screen deck) and report to a first outlet from which the heavy fractions are collected.

Abstract: An apparatus and method of separating a component from a collected quantity of fluid. The apparatus includes a dual member centrifuge and an associated fluid flow transfer set. The transfer set has a collection container in which a quantity of fluid can be initially accumulated. The collection container is formed as a disk-shaped plastic member with an elongated generally radially extending barrier member formed therein. A component collection container is in fluid flow communication with the disk-shaped container. The method provides for centrifugation of the collection container in the dual member centrifuge thereby separating out the selected fluid component. The component can then be pumped out of the collection container into the component accumulation container. The residual fluid can be sealed in the collection container for later use. The component collection container can be separated and sealed also for later use.

Abstract: An automatic centrifugal machine with lateral filtration used for realizing a highly effective separation of hardly separable fine sticky solid particles. It is equipped with a rotatable sediment drum having a radial filter plate, infrared fluid level monitor device, microcomputer programme control system as well as installations for hydraulic drive, automatic speed adjustment, automatic washing and discharge etc. That can realize a lateral filtration without filter cakes, thus attaining the object of a highly effective separation, complete discharge, undestroyed crystals, filter media easily regenerated and an operation of automation. It is especially suitable for the work of taking measures against poisoning, explosionproof and radiationproof.

Abstract: The method is carried out with a self-emptying separator. Used mineral oil is supplied to its centrifuge drum through a central intake. Purified oil is extracted through a run-off. The separator also has another run-off for liquid extracted from the periphery of the drum. The second run-off is supplied from a sampler. A sensor is positioned in the second run-off. The sensor determines the consistency of the liquid. Downstream of the sensor is a water run-off valve. A line branches off between the sensor and the water run-off valve. The line is provided with a circulation-system valve and empties into the intake. When the circulation-system valve is open and the sensor determines from the consistency of the liquid flowing through the second run-off that the liquid is an emulsion of oil and water, it supplies the result to controls. The controls then close the circulation-system valve for a prescribed amount of time.

Abstract: In order to subject a valve within the rotor of a centrifugal separator to a certain liquid pressure, the rotor being supported by a vertical drive shaft (13), a liquid surface is maintained during operation of the rotor very close to the axis of the rotor, this surface being formed within a central channel (12) through said drive shaft (13). The lower end of the drive shaft, in which the channel (12) opens axially through an orifice (31) having its surrounding edge at the desired radial level for the liquid surface, is rotated in a liquid body which is kept in a container (25) below the drive shaft (13).

Abstract: A method of separating solid particles from the liquid constituent of a slurry, containing solids having a "wide" particle size distribution, that is, a size distribution wherein the equivalent diameter of particles in the slurry ranges between at least 15 microns and 150 microns. The method uses a screen bowl centrifuge and comprises: (a) establishing a bed of solids on the screen section of the centrifuge whose maximum radial thickness is greater than 15 times the mean particle equivalent diameter of said solids in the slurry; (b) operating the scroll of the centrifuge at a speed within the range of 0.5 to 10% of the bowl speed; and (c) returning at least a portion of the solids contaminated centrate from the centrifuge to the interior of the screen section of the bowl so as to deposit the centrate on the solids passing over the screen section at or adjacent a region of maximum solids thickness.

Abstract: An axially displaceable rotary part is latched securely in a certain axial position relative to a concentric rotary part by a mechanism which includes latch means that are rotated with the concentric part and are displaceable radially relative to it by movements of a ring member so as to engage elements of the latch means with and disengage them from a latchable member of the axially displaceable part. At operating speeds of the system the latch means are urged to latching position by centrifugal force. Although applicable to various rotary mechanical systems, the mechanism is particularly useful as a component of a heavy duty cyclical centrifugal machine for latching the bottom valve member of the centrifugal basket in closed position during the loading and centrifuging stages of each centrifugal operating cycle.

Abstract: In an operating system for a centrifuge rotor having valve means being operable by means of so called operating liquid for opening and closing peripheral outlets in the rotor, an injector device for supplying operating liquid to the rotor is used which comprises a chamber divided by a movable wall into an air side and a liquid side. The liquid side of the injector device is maintained in hydraulic contact with an injection inlet to the centrifuge rotor before an opening procedure is to be started, which is effected by opening a time controlled air valve on the air side of the injector device. The air valve is further connected to a compressed air source through a buffer vessel so that a controlled air pressure is used for the injection of operating liquid to the rotor.

Abstract: A separator for separating liquids immiscible with each other and containing solids heavier than the heavier liquid, includes a rotating conic drum into which the liquids are injected. The drum has a circumferential wall formed of two oppositely-directed conic surfaces joined at the bases at an inclination angle to form an equator; and openings are provided at the equator for the heavier liquid and the solids to pass. Preferably, the drum has a star-like cross section with the interior wall extending inward at an angle from either side of each opening. The separator can include a weir or paring disc disposed radially in the static pressure chamber at a nominal level of the heavier liquid to maintain proper pressure of the heavier fluid to prevent the lighter liquid from discharging into the static pressure chamber. Alternatively, a sensor and valve arrangement can be provided to achieve this benefit.

Abstract: A self-emptying clarifying drum has a first paring disk disposed in a first paring chamber for the removal of the clarified liquid and an automatically operating apparatus for sensing the solids level in the separating chamber of the drum. The apparatus includes a plurality of passages formed between the drum cover and a separating plate and which lead from the separating chamber to a second paring chamber provided with a second paring disk for the removal of a small portion of the clarified liquid. The outlet passage of the second paring disk is in communication with the outlet for the clear phase and is connected to a flow measuring apparatus which is coactive with a control apparatus for effecting the discharge of solid matter from the drum.

Abstract: A method and apparatus for the ce ntrifugal separation of a fluid having heavier and lighter fractions into a first portion having an increased concentration of the heavier fraction and a second portion having an increased concentration of the lighter fraction and discharging the first portion peripherally and the second portion more centrally and retaining fluid between the first and second portions in the apparatus for the centrifugal separation.

Abstract: A centrifugal apparatus includes a centrifugal basket having a supporting base structure spaced below its bottom wall and fixed to the lower end of a vertical spindle to rotate the basket inside a casing surrounding the basket. The bottom wall of the basket has an opening therein about the spindle for discharge of centrifuged solids downwardly and then radially outwardly through the space between the base structure and the bottom wall. A basket valve member surrounds the spindle and is movable axially relative thereto between a position closing the basket opening and an open position spaced below the opening. A sleeve surrounds the spindle and is joined at its lower end with the valve member to position the valve member in its closed and open positions and further has an outwardly open annular channel at its upper end. A device for operating the valve includes a forked lever fulcrummed at one side of the spindle having arms straddling the spindle, each carrying on its end a roller confined in the channel.

Abstract: A centrifugal oil-water separator comprising an inner spinning bowl having openings near the lower outer periphery for passage of water therefrom into an outer bowl which remains stationary. The oil-water mixture is passed to the upper center of the spinning bowl with separation of the oil and water therein, concentrating the oil near the top of the inner bowl and disposable water is removed from the outer bowl.