Abstract: A chamber has a drive shaft rotatably mounted therein and extending along substantially the entire longitudinal extent of the chamber. This drive shaft is rotatably driven by a motor at a speed of 1,200-10,000 rpm. A plurality of screens having a mesh of 6-10 mesh are spaced from each other along the longitudinal extent of the chamber in opposing relationship and attached to the drive shaft for rotation therewith. Above the screens are a pair of discs which are attached to the shaft for rotation therewith and longitudinally spaced from each other. First and second similar plates having circular apertures formed therein are fixedly attached to the chamber in longitudinally spaced relationship, the first and second discs being positioned in the apertures of said first and second plates respectively. Gas to be purified is fed into the bottom of the chamber and driven upwardly by a compressor fan attached to the drive shaft.

Abstract: A method and apparatus for collecting and removing dust from dust laden air has a housing defining a chamber having an inlet for the dust laden air, a first outlet for dust free air and a second outlet for the collected dust, the inlet and second outlet being connected by a curved wall. A filter cartridge is mounted in the chamber at the axis of the curved wall and is at least partially enclosed within and inner wall which, together with the outer wall forms a cyclonic passage for the air passing therethrough. High velocity air flow is directed into the chamber wherein at least some of the dust will strike the chamber wall at high velocity causing a rapid change in kinetic energy and detraining the dust from the air, this dust then falling from the air stream and removed from the chamber through an air lock or similar device. The air then revolves around and is drawn through the filter removing the remaining dust therefrom.

Abstract: A method of separating unburned Carbon, as particulate matter, from the flyash produced as a result of the combustion process occurring in a pulverized-coal fired steam generating power plant is disclosed. More particularly the invention separates the flyash into a coarse product group and a fine product group by utilizing the differences in specific gravity between the Carbon particles and remaining flyash as well as utilization of the dynamic classification characteristics of a rotary classifier to effect the separation whereby at least one of the two product groups comprises a relatively low weight percentage of unburned Carbon while yet comprising a relatively high percentage of the total mass of product recovered after separation.

Abstract: In a device for separating solid or liquid particles from a stream of gas, there is an aperture of a suction pipe which is substantially directed towards the axis of an impeller. The suction pipe is surrounded by a dust collecting container. To improve phase separation, especially in a vacuum cleaner in which the dust collecting container is fitted upstream of a dust bag, there is an axial aperture in the impeller and/or a straight aperture from the dust collecting container to the impeller. This generates an air vortex in the region of the opening of the suction pipe which carries the particles outwards where they are further transported into the dust collecting container by a secondary vortex induced therein.

Abstract: For the purpose of separating dust particles inside a cooling system of a rotor, fitted with moving blades, of a turbo-machine, a device is arranged upstream of the moving blades to be cooled and in the region of the rotor outer surface. The device has at least one feed channel through which a coolant flows, and is directed in the radial direction such that the dust particles located in the coolant accumulate on the side accelerating in the direction of rotation of the rotor. These dust particles subsequently pass into a separation chamber operationally connected to the feed channel and in which they are captured in order then to be discharged.

Abstract: A lamina/air separator for use atop apparatus for removing tobacco lamina from a lamina/stem mixture includes a horizontally disposed perforated cylindrical drum rotatively secured within a housing having sidewalls containing air exit ports adjacent the extremities of the drum. A sealing assembly interactive between each extremity of the drum and associated sidewall utilizes two flexed sealing strips to create a stagnant zone, bounded in part by the sidewall, that envelopes the extremity of the drum.

Abstract: A centrifugal air separator with a housing provided with inlets for material to be separated and separating air or a combined material and air inlet, and outlets for air-and-fines mixture and coarse material, in which at least one wheel formed essentially of a crown of buckets is journal ed. The invention addresses the problem of reducing the distance of the bearings of the wheel shaft from one another, in a centrifugal air separator of this type, preferably a separator with fines-and-air aspiration at both ends. According to the invention, the fan wheel is journal ed on a central, fixed axle which is held in the housing and machine frame by arms, struts or other such supports.

Abstract: The invention relates to a separating body which can be set into rotation to separate solid or liquid particles of micron or submicron size from a fluid, wherein the body has a large number of separating ducts with singly connected walls over a substantial part of the axial length, where the walls of at least one of the separating ducts are not parallel to the axis of rotation. The tangent of the angle between the tangent planes of the walls of the separating duct and the axis of rotation is designated with tan .alpha., the radial width of the separating duct is designated with d, the length of the separating duct is designated with L and the rotation speed of the separating body is designated with .OMEGA. where these variables are chosen in mutual dependence in a manner such that the dimensionless number (.OMEGA.Ld tan .alpha.)/.nu. is located over a substantial part of the separating duct in the range up to 192, wherein .nu. is the kinematic viscosity of the fluid.

Abstract: A cyclone separator has with a separation chamber in a spiral housing fitted with an inlet for the material to be separated in parallel to a tangent to the separator housing, a separate tangential inlet for a separator gas, and a longitudinal outlet arranged concentrically about the separator axis to allow the gas and fine particulate matter to pass out of the separation chamber. The separator further has a ring of vanes located in the spiral housing between the separation chamber, which is arranged coaxially to the outlet, and an outer annular space, the material inlet feeding into the separation chamber and the gas inlet feeding into the outer annular space.

Abstract: The present invention pertains to an air separator with a stationary housing, which forms a helix when viewed in the axial direction, with a blade ring arranged stationarily in the housing with adjustable blades, and with a bladed separation wheel, which is arranged coaxially within the blade ring and rotatable around the axis of the housing. A raw material inlet opens tangentially into the annular space between the separation wheel and the blade ring, and the separation gas inlet, which is directed in parallel to the crude gas inlet, opens into the annular space between the blade ring and the helical housing. Finally, a raw material outlet is provided in the end zone of the flow in the annular space between the blade ring and the separation wheel. A coarse material outlet is arranged offset in relation to the separation gas outlet in the axial direction of the helical housing, as a result of which the helical housing has the three-dimensional shape of a worm with at least one revolution.

Abstract: A dirt collecting apparatus for a vacuum cleaner which is adapted to decrease a volume of a canister body thereby facilitating a handling of the vacuum cleaner and which has a dirt container that is easily detached from the apparatus. The apparatus comprises a dirt collecting chamber connected between a wand and a handle pipe, a cyclone part inserted in the dirt collecting chamber which converts a linear flow in the dirt collecting chamber into a cyctonical flow, and a dirt container mounted on the outer surface of the dirt collecting chamber which receives the dirt separated in the dirt collecting chamber.

Abstract: Rotatable circular plates are stacked apart to form thin air layers therebetween. Rotation of the circular plates moves air over an air treatment material: catalyst or adsorbent. In one embodiment, the air treatment material is affixed to the surface of the circular plates. In another embodiment, the circular plates are formed from the air treatment material. The increased velocity of air relative to the circular plates causes separation of laminar flow, promotes boundary-layer turbulence near the plate surfaces, and promotes propagating stall in the air layers. These phenomena enhance the contact between the flowing air and the air treatment material.

Abstract: A preferably vertical air separator with a rotating separator wheel upon which separating air loaded with fine goods flowing from outside towards the inside impinges, from which said separating air axially flows off through an outlet connection pipe in order to be guided to its further use, e.g. in a filter or the like, said separating wheel being provided with a downstream cover plate and a second cover plate being axially distanced therefrom, and blades being disposed between the two cover pates at their periphery, and the outlet connection delivery end averted from the separating wheel emptying into an outlet chamber the cross section of which is distinctly larger than the cross section of the said outlet connection pipe, so that there occurs an abrupt change of the cross section between the outlet connection pipe and the said outlet chamber.

Abstract: A rotational separator for separating particulate material from gas includes a housing having a gas inlet and a gas outlet. A centrifuge is rotatably mounted in the housing along a rotation axis extending through the housing. The centrifuge includes a plurality a radially-spaced individual separation channels which extend parallel to each other and parallel to the rotaton axis. The separation channels extend azimuthally about the rotation axis by less than 360.degree. to prevent azimuthal flows greater than 360.degree. about the rotation axis in any of the individual separation channels.

Abstract: Contaminated hot gases are first cooled and then the flow is divided between a plurality of identical modules for removal or contaminants. There are two stages of treatment in each module, starting with submergence of the flow under the surface of an agitated liquid neutralizing solution in a reservoir under a pair of counter rotating separator deflectors. Above the deflectors the flow is propelled upward through a venturi restrictor chamber, then into a collector pressure chamber. This completes the first stage of treatment, the second stage being the same as the first stage. Between these first and second stages the flow is passed through an electronic air cleaner. Upon leaving the second stage of treatment the cleaned gas flow joins the flows from the other modules in a fresh air distributor.

Abstract: A centrifugal classifier comprising a housing, which is provided with inlets for material to be classified and classifying air or with an inlet for material to be classified and classifying air and with outlets for fines and for coarses, and at least one rotor, which essentially consists of an annular series of blades and is movably mounted in the housing. The rotor is movably mounted in the housing by at least one bearing, which is adapted to be purged by a fluid and which serves also as a seal between the rotor or rotor shaft and the housing.

Abstract: A rotational separator for separating particulate material from gas includes a housing having a gas inlet, a gas outlet, and an outlet for separated particulate material; a centrifuge mounted for rotation in the housing and including separation channels which extend parallel to a common rotation axis; and a driver for rotating the centrifuge; wherein the particulate material separated has a cross-sectional dimension from about 0.1 to about 5 um, that the separation channels are provided with singly-connected cross-sections over a substantial part of the axial separation channel length, and that the hydraulic diameter of the separation channels and the average axial gas velocity are selected in mutual dependence such that the Reynolds number is less than 2400 and the gas passes through the separation channels in a laminar flow.

Abstract: Gas reacting apparatus and method are described for wet mass transfer of solute gases from a gas stream with a liquid or slurry reacting medium capable of chemisorption of solute gases in the gas stream. The apparatus comprises an elongated conduit defining a primary reaction zone in fluid-flow communication with a fan defining both a secondary reaction zone and a spray coalescence zone, and a plurality of dual-fluid spray nozzles coaxially spaced in series within the conduit and countercurrently or cocurrently directed to the gas stream for spraying the liquid or slurry reacting medium into said conduit to form a plurality of spray contact zones of uniformly-distributed fine droplets wherein intimate contact of high interfacial surface area between the sprayed liquid or slurry and the gas stream is effected to remove solute gases from the gas stream.

Abstract: Separation of vaporizing oil and smoke to clean polluted air. That is, by inducing the particles to directly impact the revolving filter drum, and some small particles to be intercepted in the meshes and some large particles to collect in the groove means, due to the rotation of blower blades. Clean air will go upwards through the revolving filter drum through a pressure effect. Automatic cleaning of the polluted revolving filter drum and groove means is achieved by rotation of an axial fan causing a centrifugal effect.

Abstract: A centrifugal pump wheel (4) comprises a rear (6) and/or a front (9) covering plate or dish, which has a plurality of gas evacuation openings (8) located leeward of the pump wheel vanes (5). To increase the effectivity of the gas evacuation and thereby improve the performance characteristics of the pump that fraction of the area of the openings which is located nearer the circumference of the pump wheel than the center of the pump wheel has been made larger than the remaining portion of the area of the openings.The invention also relates to a method of pumping a liquid which contains gas and possibly also solids, by means of a centrifugal pump having a pump wheel with the above characteristics. The gas pressure in a conduit (12) which is in communication with said openings (8) is measured.

Abstract: Gas reacting apparatus and method are described for wet mass transfer of solute gases from a gas stream with a liquid or slurry reacting medium capable of chemisorption of solute gases in the gas stream. The apparatus comprises an elongated conduit means defining a primary reaction zone in fluid-flow communication with a fan means defining both a secondary reaction zone and a spray coalescence zone, and plurality of dual fluid spray means coaxially spaced in series within the conduit means and countercurrently or cocurrently directed to the gas stream for spraying the liquid or slurry reacting medium into said conduit means to form a plurality of spray contact zones of uniformly-distributed fine droplets wherein intimate contact of high interfacial surface area between the sprayed liquid or slurry and the gas stream is effected to remove solute gases from the gas stream.

Abstract: A high speed rotary filter device is disclosed which utilizes a rotor having a bladeless portion between the inducer and the exducer portions of the rotor, thereby substantially eliminating secondary flow within the high speed rotary filter device.

Abstract: Method and apparatus are disclosed for recovering blowing wool from an air stream by introducing the stream out aa drum rotating in a sealed shroud, the speed of rotating be adjusted in response to the pressure differential across the surface of the drum.

Abstract: The apparatus for removing dust particles from an air stream, particularly for ventilating mines, comprises a centrifugal separator (3), which rotates in a housing (1), a blower (4), and a device (6, 7) for spraying or atomizing water and for delivering it to the air stream entering the centrifugal separator (3). The centrifugal separator (3) comprises a plurality of blade wheel sections (8, 9) having blades (14) which are joined to walls (10) which flare like funnels. The blades of said blade wheel sections (8, 9) extend approximately in axial planes. Said blade wheel sections (8, 9) are preceded at the air inlet end by at least one blade/wheel section (15) in which the generatrices of the blade surfaces (blades 17) which are equidistant from the axis are inclined by an angle of incidence (.alpha.

Abstract: An alternator filter arrangement which encorporates an alternator having a driven shaft passing through its housing which has an air intake therein and a non-magnetic filter screen mounted for rotation with the driven shaft with the filter screen being in close proximity to and substantially encompassing the air intake.

Abstract: A centrifugal degasser is provided using the principal of centrifugal force to separate gas from a gas-cut flowable material such as drilling mud. The device passes a gas-cut material through a centrifugal force field to accomplish the degassing. The invention contemplates the slurry flowing through the degasser by entering it through the top and flowing downward or entering from the bottom and flowing upward. In either case the slurry moves through the force field to accelerate gravity settling of the continuous phase of the flowable material and to accelerate buoyant force gas bubble rising time.

Abstract: A casing is secured to the front of the radiator air intake of a tractor and a cylindrical screen assembly is journalled for free rotation to the casing. A fan blade assembly is secured to the inner end of the cylindrical screen assembly so that air drawn through the radiator by the engine cooling fan, passes through the fan assembly of the screen assembly and rotates the screen assembly. A blanking plate is supported within the screen assembly which blanks off part of the screen as it passes thereby, so that no air passes into the screen assembly in this area. This releases chaff or other debris normally held on the surface of the screen by suction.

Abstract: Total heat energy exchange medium incorporated in an energy exchange device for transferring heat and moisture between two airstreams in an air supply system. The exchange medium is aluminum having a coating of hydrated calcium and aluminum oxides or hydroxides to render its heat transfer surfaces capable of exchanging latent as well as sensible heat energy. The coating is formed by exposing precleaned aluminum to a heated, preferably boiling solution of water-soluble calcium and aluminum compounds, preferably equal parts of hydrated calcium nitrate and hydrated aluminum nitrate, the pH of the solution having been brought to the range of from about 7 to 11, preferably pH=8 to 9, by adding sodium hydroxide which produces in the solution a mixed gelatinous precipitate of hydrated calcium and aluminum oxides and hydroxides.

Abstract: A gas separation apparatus is provided for removing moistened particles from a stream of air by subjecting the moistened particle laden air stream to centrifugal force to separate the moistened particles from the air stream and thence separating the water from the particles and finally causing the air stream to pass to an outlet through a mechanical separator assembly to remove any particles still remaining therein.

Abstract: Improved separation of heavier material from a dispersoid of gas and heavier material entrained therein is taught by the method of this invention which advantageously uses apparatus embodied in an inertial separator having rotary partition means comprising wall members dividing a housing into a plurality of axially-extending through passages arranged in parallel. Simultaneously with the helical transit of a moving stream of the dispersoid through the parallel arrangement of axially-extending through passages at a constant angular velocity, the heavier material is driven radially to the collecting surfaces of the rotational wall members where it is collected while the wall members are rotating at the same angular velocity as the moving stream. The plurality of wall members not only provides an increased area of collecting surfaces but the positioning of each of the wall members according to the teaching of this invention also results in a shortened time-of-flight to the collecting surfaces.

Abstract: A filter apparatus and filtering system which is particularly applicable for extracting particulated material from hot gases comprising a collector overlying a portion of the upstream face of the filter element for applying a reduced pressure to the particulate filter cake formed thereover to effect a dislodgement and recovery of the filtered particulate material. The collector is movable to progressively traverse substantially the entire upstream face of the filter element to effect a cleaning thereof by removal of the filter cake without interruption of the operation of the filtering system. The invention further encompasses a separator for cleaning the granular filter medium withdrawn from the filter apparatus and for recycling the cleaned filter medium back to the filter apparatus.

Abstract: A gas separation apparatus is provided for removing moistened particles from a stream of air by subjecting the moistened particle laden air stream to centrifugal force to separate the moistened particles from the air stream and thence separating the water from the particles and finally causing the air stream to pass to an outlet through a mechanical separator assembly to remove any particles still remaining therein.

Abstract: An apparatus which serves to clean air containing fine dust and also larger particles, such as fibrous material, thread ends, etc., which are produced in an industrial environment, especially a textile plant. In order to conduct a two-stage cleaning process without the necessity of dimensioning two filtering stages for the full air flow, there is provided a vortex chamber into which the unclean air is admitted tangentially or in some manner which produces a rotary flow with centrifugal force components which act on the larger particles in the air stream. The vortex chamber includes a rotating filter drum, the interior of which may preferably be provided with suction, causing air to flow from the vortex chamber through the filter, depositing thereon the fine dust carried by the incoming air.

Abstract: An apparatus and process for separating gaseous mixtures of molecules of different mass in which a rotating means is caused to eject a contiguous plurality of successsive groups of molecules into an evacuated space to form a continuous stream of said mixture; the molecules of each said group of molecules are allowed to move in accordance with their thermal velocities for a predetermined period of time following ejection, thereby to allow each said group of molecules to form a generally spherical configuration the outer radius of which will be enriched, in molecules of lighter mass, relative to lesser radii, a deflector means co-rotating with said rotating means is used to deflect molecules, which have been allowed to move for said predetermined period of time in accordance with their thermal velocities, from at least one desired portion of said stream and a stationary collector means disposed to receive said deflected molecules.

Abstract: Rotary regenerative total heat energy exchanger having an asbestos-free heat exchange media formed by spirally winding flat and corrugated webs of aluminum foil and/or fully bleached, 45 lb. Kraft paper constituted by 84% fibres and 16% salts. The contained salts are 90% ammonium sulfide and 10% diammonium phosphate. Wheel thickness for efficient transfer of both sensible heat and latent heat with minimal air pressure drop across the wheel is a multiple of from 100 to 400, preferably 125 to 200, times the flute height of the corrugation web of the media. Although media may be substantially all-paper, preferred embodiments provide media having both a flat web and a corrugated web of aluminum foil, a pair of paper webs being disposed respectively on the opposite surfaces of either the flat foil web or the corrugated foil web.

Abstract: A diffuser for finely dividing a liquid, particularly water to be degassed, in which at least two annular plates pairwise engage one another by rims located near the outer circumference and are held spaced apart at the inner circumference by spacers having a radial passage, the space inside the plates of each pair having a connection for the supply of the pressurized liquid to be diffused, at least one of each pair of relatively co-operating plates being resilient and means being provided for clamping the plates together against spring force.

Abstract: An electrostatic filter type gas cleaner having relatively electrically insulated discharge and collecting electrodes between which the gas to be cleaned is passed. The collecting electrodes are mounted concentrically around the discharge electrodes and are rotatable relative to them so that particles separating from the gas and depositing on the collecting electrodes are almost immediately thrown away from these electrodes. A casing surrounds the collecting electrodes and serves to collect and carry away the particles separated from the gas. The interior space of the casing is not influenced by the gas flow between the discharge and collecting electrodes. Moreover, means are provided at the peripheral part of a prolongation, extending in the direction of the gas stream, of the annular gap between the discharge and collecting electrodes to lead off the peripheral portion of the gas stream radially outwards to a separate outlet.

Abstract: The invention provides a method and an apparatus for separating and collecting fibrous material in a silo having a side wall defining an interior for storing fibrous material and having an inlet and outlet, the apparatus comprising a flat disc having a perforated portion and an imperforate annular edge portion and mounted for rotation on a horizontal shaft in the interior of the silo adjacent the outlet, a driving device for rotating the disc, an inlet conduit connected to said inlet for impingement of the pneumatically conveyed air-fibrous material mixture on the disc, a suction conduit connected to said outlet and having an end edge projecting into the silo and disposed in closely spaced relationship with the imperforate annular portion of the disc, to provide, during the rotation of the disc, an aerodynamic seal formed in an annular duct defined between the annular imperforate portion of the disc, the side wall of the silo and the outer surface near the edge of the suction conduit, the suction conduit draw

Abstract: An exhaust fume treatment apparatus for removing suspended or entrained material from a gas including a substantially cylindrical housing having a peripheral wall and inlet and outlet openings in opposite end walls. A slinger wheel is rotatable within the housing and has circumferentially spaced, nonoverloading blades. A blower has its inlet connected to the outlet of the housing. Polluted fumes are drawn into the housing by the blower and pass outwardly through the slinger blades whereby the materials in the gas are deposited on, and thrown substantially radially outwardly by the blades, toward the peripheral wall of the housing for collection. A two stage gas deflector within the slinger wheel spreads the flow of gas more uniformly over the slinger wheel blades. A cylindrical screen encircles the slinger wheel and has plural openings angled toward the housing inlet end.

Abstract: A liquid ring pump comprising a housing, a substantially oval chamber within said housing, and a hub supporting a plurality of radially disposed vanes adapted to rotate within said chamber, said pump being such that the interstices between said individual vanes are partially blocked by a blocking mass which rotates with said vanes and which raises the stall pressure ratio of said pump to increase its pumping efficiency. The blocking mass is additional to the hub and in the case where the liquid ring pump also includes a gas/liquid mixture inlet port and a gas discharge port arranged on opposite sides of said pump, then the blocking mass forms a weir which gives the additional advantage that it acts to prevent the direct axial migration of liquid from said inlet port to said gas discharge port, thus enabling said pump to easily separate said gas liquid mixture into separate gas and liquid phases.